-/*
- * Copyright (c) 2007-2013 Apple Inc. All rights reserved.
+/*
+ * Copyright (c) 2007-2018 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
/*
* Copyright (c) 2001 Daniel Hartmeier
- * Copyright (c) 2002,2003 Henning Brauer
+ * Copyright (c) 2002 - 2013 Henning Brauer
+ * NAT64 - Copyright (c) 2010 Viagenie Inc. (http://www.viagenie.ca)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include <machine/endian.h>
#include <sys/param.h>
#include <sys/systm.h>
-#include <sys/mbuf.h>
#include <sys/filio.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <net/if_ether.h>
#include <net/ethernet.h>
#include <net/flowhash.h>
+#include <net/nat464_utils.h>
#include <net/pfvar.h>
#include <net/if_pflog.h>
#endif /* DUMMYNET */
/*
- * For RandomULong(), to get a 32 bits random value
+ * For RandomULong(), to get a 32 bits random value
* Note that random() returns a 31 bits value, see rdar://11159750
*/
#include <dev/random/randomdev.h>
-#define DPFPRINTF(n, x) (pf_status.debug >= (n) ? printf x : ((void)0))
+#define DPFPRINTF(n, x) (pf_status.debug >= (n) ? printf x : ((void)0))
/*
* On Mac OS X, the rtableid value is treated as the interface scope
* the test against INT_MAX to handle userland apps which initialize
* the field with a negative number.
*/
-#define PF_RTABLEID_IS_VALID(r) \
+#define PF_RTABLEID_IS_VALID(r) \
((r) > IFSCOPE_NONE && (r) <= INT_MAX)
/*
* Global variables
*/
-decl_lck_mtx_data(,pf_lock_data);
-decl_lck_rw_data(,pf_perim_lock_data);
+decl_lck_mtx_data(, pf_lock_data);
+decl_lck_rw_data(, pf_perim_lock_data);
lck_mtx_t *pf_lock = &pf_lock_data;
lck_rw_t *pf_perim_lock = &pf_perim_lock_data;
/* state tables */
-struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
-struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
-
-struct pf_palist pf_pabuf;
-struct pf_status pf_status;
-
-#if PF_ALTQ
-struct pf_altqqueue pf_altqs[2];
-struct pf_altqqueue *pf_altqs_active;
-struct pf_altqqueue *pf_altqs_inactive;
-u_int32_t ticket_altqs_active;
-u_int32_t ticket_altqs_inactive;
-int altqs_inactive_open;
-#endif /* PF_ALTQ */
-u_int32_t ticket_pabuf;
-
-static MD5_CTX pf_tcp_secret_ctx;
-static u_char pf_tcp_secret[16];
-static int pf_tcp_secret_init;
-static int pf_tcp_iss_off;
+struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
+struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
+
+struct pf_palist pf_pabuf;
+struct pf_status pf_status;
+
+u_int32_t ticket_pabuf;
+
+static MD5_CTX pf_tcp_secret_ctx;
+static u_char pf_tcp_secret[16];
+static int pf_tcp_secret_init;
+static int pf_tcp_iss_off;
static struct pf_anchor_stackframe {
- struct pf_ruleset *rs;
- struct pf_rule *r;
- struct pf_anchor_node *parent;
- struct pf_anchor *child;
+ struct pf_ruleset *rs;
+ struct pf_rule *r;
+ struct pf_anchor_node *parent;
+ struct pf_anchor *child;
} pf_anchor_stack[64];
-struct pool pf_src_tree_pl, pf_rule_pl, pf_pooladdr_pl;
-struct pool pf_state_pl, pf_state_key_pl;
-#if PF_ALTQ
-struct pool pf_altq_pl;
-#endif /* PF_ALTQ */
+struct pool pf_src_tree_pl, pf_rule_pl, pf_pooladdr_pl;
+struct pool pf_state_pl, pf_state_key_pl;
typedef void (*hook_fn_t)(void *);
void *hd_arg;
};
-#define HOOK_REMOVE 0x01
-#define HOOK_FREE 0x02
-#define HOOK_ABORT 0x04
+#define HOOK_REMOVE 0x01
+#define HOOK_FREE 0x02
+#define HOOK_ABORT 0x04
-static void *hook_establish(struct hook_desc_head *, int,
- hook_fn_t, void *);
-static void hook_runloop(struct hook_desc_head *, int flags);
+static void *hook_establish(struct hook_desc_head *, int,
+ hook_fn_t, void *);
+static void hook_runloop(struct hook_desc_head *, int flags);
-struct pool pf_app_state_pl;
-static void pf_print_addr(struct pf_addr *addr, sa_family_t af);
-static void pf_print_sk_host(struct pf_state_host *, u_int8_t, int,
- u_int8_t);
+struct pool pf_app_state_pl;
+static void pf_print_addr(struct pf_addr *addr, sa_family_t af);
+static void pf_print_sk_host(struct pf_state_host *, u_int8_t, int,
+ u_int8_t);
-static void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
+static void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
-static void pf_init_threshold(struct pf_threshold *, u_int32_t,
- u_int32_t);
-static void pf_add_threshold(struct pf_threshold *);
-static int pf_check_threshold(struct pf_threshold *);
+static void pf_init_threshold(struct pf_threshold *, u_int32_t,
+ u_int32_t);
+static void pf_add_threshold(struct pf_threshold *);
+static int pf_check_threshold(struct pf_threshold *);
-static void pf_change_ap(int, struct mbuf *, struct pf_addr *,
- u_int16_t *, u_int16_t *, u_int16_t *,
- struct pf_addr *, u_int16_t, u_int8_t, sa_family_t);
-static int pf_modulate_sack(struct mbuf *, int, struct pf_pdesc *,
- struct tcphdr *, struct pf_state_peer *);
+static void pf_change_ap(int, pbuf_t *, struct pf_addr *,
+ u_int16_t *, u_int16_t *, u_int16_t *,
+ struct pf_addr *, u_int16_t, u_int8_t, sa_family_t,
+ sa_family_t, int);
+static int pf_modulate_sack(pbuf_t *, int, struct pf_pdesc *,
+ struct tcphdr *, struct pf_state_peer *);
#if INET6
-static void pf_change_a6(struct pf_addr *, u_int16_t *,
- struct pf_addr *, u_int8_t);
+static void pf_change_a6(struct pf_addr *, u_int16_t *,
+ struct pf_addr *, u_int8_t);
+void pf_change_addr(struct pf_addr *a, u_int16_t *c,
+ struct pf_addr *an, u_int8_t u,
+ sa_family_t af, sa_family_t afn);
#endif /* INET6 */
-static void pf_change_icmp(struct pf_addr *, u_int16_t *,
- struct pf_addr *, struct pf_addr *, u_int16_t,
- u_int16_t *, u_int16_t *, u_int16_t *,
- u_int16_t *, u_int8_t, sa_family_t);
-static void pf_send_tcp(const struct pf_rule *, sa_family_t,
- const struct pf_addr *, const struct pf_addr *,
- u_int16_t, u_int16_t, u_int32_t, u_int32_t,
- u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
- u_int16_t, struct ether_header *, struct ifnet *);
-static void pf_send_icmp(struct mbuf *, u_int8_t, u_int8_t,
- sa_family_t, struct pf_rule *);
-static struct pf_rule *pf_match_translation(struct pf_pdesc *, struct mbuf *,
- int, int, struct pfi_kif *, struct pf_addr *,
- union pf_state_xport *, struct pf_addr *,
- union pf_state_xport *, int);
-static struct pf_rule *pf_get_translation_aux(struct pf_pdesc *,
- struct mbuf *, int, int, struct pfi_kif *,
- struct pf_src_node **, struct pf_addr *,
- union pf_state_xport *, struct pf_addr *,
- union pf_state_xport *, struct pf_addr *,
- union pf_state_xport *);
-static void pf_attach_state(struct pf_state_key *,
- struct pf_state *, int);
-static void pf_detach_state(struct pf_state *, int);
-static u_int32_t pf_tcp_iss(struct pf_pdesc *);
-static int pf_test_rule(struct pf_rule **, struct pf_state **,
- int, struct pfi_kif *, struct mbuf *, int,
- void *, struct pf_pdesc *, struct pf_rule **,
- struct pf_ruleset **, struct ifqueue *);
+static void pf_change_icmp(struct pf_addr *, u_int16_t *,
+ struct pf_addr *, struct pf_addr *, u_int16_t,
+ u_int16_t *, u_int16_t *, u_int16_t *,
+ u_int16_t *, u_int8_t, sa_family_t);
+static void pf_send_tcp(const struct pf_rule *, sa_family_t,
+ const struct pf_addr *, const struct pf_addr *,
+ u_int16_t, u_int16_t, u_int32_t, u_int32_t,
+ u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
+ u_int16_t, struct ether_header *, struct ifnet *);
+static void pf_send_icmp(pbuf_t *, u_int8_t, u_int8_t,
+ sa_family_t, struct pf_rule *);
+static struct pf_rule *pf_match_translation(struct pf_pdesc *, pbuf_t *,
+ int, int, struct pfi_kif *, struct pf_addr *,
+ union pf_state_xport *, struct pf_addr *,
+ union pf_state_xport *, int);
+static struct pf_rule *pf_get_translation_aux(struct pf_pdesc *,
+ pbuf_t *, int, int, struct pfi_kif *,
+ struct pf_src_node **, struct pf_addr *,
+ union pf_state_xport *, struct pf_addr *,
+ union pf_state_xport *, union pf_state_xport *
+ );
+static void pf_attach_state(struct pf_state_key *,
+ struct pf_state *, int);
+static void pf_detach_state(struct pf_state *, int);
+static u_int32_t pf_tcp_iss(struct pf_pdesc *);
+static int pf_test_rule(struct pf_rule **, struct pf_state **,
+ int, struct pfi_kif *, pbuf_t *, int,
+ void *, struct pf_pdesc *, struct pf_rule **,
+ struct pf_ruleset **, struct ifqueue *);
#if DUMMYNET
-static int pf_test_dummynet(struct pf_rule **, int,
- struct pfi_kif *, struct mbuf **,
- struct pf_pdesc *, struct ip_fw_args *);
+static int pf_test_dummynet(struct pf_rule **, int,
+ struct pfi_kif *, pbuf_t **,
+ struct pf_pdesc *, struct ip_fw_args *);
#endif /* DUMMYNET */
-static int pf_test_fragment(struct pf_rule **, int,
- struct pfi_kif *, struct mbuf *, void *,
- struct pf_pdesc *, struct pf_rule **,
- struct pf_ruleset **);
-static int pf_test_state_tcp(struct pf_state **, int,
- struct pfi_kif *, struct mbuf *, int,
- void *, struct pf_pdesc *, u_short *);
-static int pf_test_state_udp(struct pf_state **, int,
- struct pfi_kif *, struct mbuf *, int,
- void *, struct pf_pdesc *, u_short *);
-static int pf_test_state_icmp(struct pf_state **, int,
- struct pfi_kif *, struct mbuf *, int,
- void *, struct pf_pdesc *, u_short *);
-static int pf_test_state_other(struct pf_state **, int,
- struct pfi_kif *, struct pf_pdesc *);
-static int pf_match_tag(struct mbuf *, struct pf_rule *,
- struct pf_mtag *, int *);
-static void pf_hash(struct pf_addr *, struct pf_addr *,
- struct pf_poolhashkey *, sa_family_t);
-static int pf_map_addr(u_int8_t, struct pf_rule *,
- struct pf_addr *, struct pf_addr *,
- struct pf_addr *, struct pf_src_node **);
-static int pf_get_sport(struct pf_pdesc *, struct pfi_kif *,
- struct pf_rule *, struct pf_addr *,
- union pf_state_xport *, struct pf_addr *,
- union pf_state_xport *, struct pf_addr *,
- union pf_state_xport *, struct pf_src_node **);
-static void pf_route(struct mbuf **, struct pf_rule *, int,
- struct ifnet *, struct pf_state *,
- struct pf_pdesc *);
+static int pf_test_fragment(struct pf_rule **, int,
+ struct pfi_kif *, pbuf_t *, void *,
+ struct pf_pdesc *, struct pf_rule **,
+ struct pf_ruleset **);
+static int pf_test_state_tcp(struct pf_state **, int,
+ struct pfi_kif *, pbuf_t *, int,
+ void *, struct pf_pdesc *, u_short *);
+static int pf_test_state_udp(struct pf_state **, int,
+ struct pfi_kif *, pbuf_t *, int,
+ void *, struct pf_pdesc *, u_short *);
+static int pf_test_state_icmp(struct pf_state **, int,
+ struct pfi_kif *, pbuf_t *, int,
+ void *, struct pf_pdesc *, u_short *);
+static int pf_test_state_other(struct pf_state **, int,
+ struct pfi_kif *, struct pf_pdesc *);
+static int pf_match_tag(struct pf_rule *,
+ struct pf_mtag *, int *);
+static void pf_hash(struct pf_addr *, struct pf_addr *,
+ struct pf_poolhashkey *, sa_family_t);
+static int pf_map_addr(u_int8_t, struct pf_rule *,
+ struct pf_addr *, struct pf_addr *,
+ struct pf_addr *, struct pf_src_node **);
+static int pf_get_sport(struct pf_pdesc *, struct pfi_kif *,
+ struct pf_rule *, struct pf_addr *,
+ union pf_state_xport *, struct pf_addr *,
+ union pf_state_xport *, struct pf_addr *,
+ union pf_state_xport *, struct pf_src_node **
+ );
+static void pf_route(pbuf_t **, struct pf_rule *, int,
+ struct ifnet *, struct pf_state *,
+ struct pf_pdesc *);
#if INET6
-static void pf_route6(struct mbuf **, struct pf_rule *, int,
- struct ifnet *, struct pf_state *,
- struct pf_pdesc *);
+static void pf_route6(pbuf_t **, struct pf_rule *, int,
+ struct ifnet *, struct pf_state *,
+ struct pf_pdesc *);
#endif /* INET6 */
-static u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t,
- sa_family_t);
-static u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t,
- sa_family_t);
-static u_int16_t pf_calc_mss(struct pf_addr *, sa_family_t,
- u_int16_t);
-static void pf_set_rt_ifp(struct pf_state *,
- struct pf_addr *);
-static int pf_check_proto_cksum(struct mbuf *, int, int,
- u_int8_t, sa_family_t);
-static int pf_addr_wrap_neq(struct pf_addr_wrap *,
- struct pf_addr_wrap *);
-static struct pf_state *pf_find_state(struct pfi_kif *,
- struct pf_state_key_cmp *, u_int);
-static int pf_src_connlimit(struct pf_state **);
-static void pf_stateins_err(const char *, struct pf_state *,
- struct pfi_kif *);
-static int pf_check_congestion(struct ifqueue *);
+static u_int8_t pf_get_wscale(pbuf_t *, int, u_int16_t,
+ sa_family_t);
+static u_int16_t pf_get_mss(pbuf_t *, int, u_int16_t,
+ sa_family_t);
+static u_int16_t pf_calc_mss(struct pf_addr *, sa_family_t,
+ u_int16_t);
+static void pf_set_rt_ifp(struct pf_state *,
+ struct pf_addr *, sa_family_t af);
+static int pf_check_proto_cksum(pbuf_t *, int, int,
+ u_int8_t, sa_family_t);
+static int pf_addr_wrap_neq(struct pf_addr_wrap *,
+ struct pf_addr_wrap *);
+static struct pf_state *pf_find_state(struct pfi_kif *,
+ struct pf_state_key_cmp *, u_int);
+static int pf_src_connlimit(struct pf_state **);
+static void pf_stateins_err(const char *, struct pf_state *,
+ struct pfi_kif *);
+static int pf_check_congestion(struct ifqueue *);
#if 0
static const char *pf_pptp_ctrl_type_name(u_int16_t code);
#endif
-static void pf_pptp_handler(struct pf_state *, int, int,
- struct pf_pdesc *, struct pfi_kif *);
-static void pf_pptp_unlink(struct pf_state *);
-static void pf_grev1_unlink(struct pf_state *);
-static int pf_test_state_grev1(struct pf_state **, int,
- struct pfi_kif *, int, struct pf_pdesc *);
-static int pf_ike_compare(struct pf_app_state *,
- struct pf_app_state *);
-static int pf_test_state_esp(struct pf_state **, int,
- struct pfi_kif *, int, struct pf_pdesc *);
+static void pf_pptp_handler(struct pf_state *, int, int,
+ struct pf_pdesc *, struct pfi_kif *);
+static void pf_pptp_unlink(struct pf_state *);
+static void pf_grev1_unlink(struct pf_state *);
+static int pf_test_state_grev1(struct pf_state **, int,
+ struct pfi_kif *, int, struct pf_pdesc *);
+static int pf_ike_compare(struct pf_app_state *,
+ struct pf_app_state *);
+static int pf_test_state_esp(struct pf_state **, int,
+ struct pfi_kif *, int, struct pf_pdesc *);
extern struct pool pfr_ktable_pl;
extern struct pool pfr_kentry_pl;
{ &pfr_kentry_pl, PFR_KENTRY_HIWAT },
};
-struct mbuf *
-pf_lazy_makewritable(struct pf_pdesc *pd, struct mbuf *m, int len)
+void *
+pf_lazy_makewritable(struct pf_pdesc *pd, pbuf_t *pbuf, int len)
{
- if (pd->lmw < 0)
- return (0);
+ void *p;
+
+ if (pd->lmw < 0) {
+ return NULL;
+ }
- VERIFY(m == pd->mp);
+ VERIFY(pbuf == pd->mp);
+ p = pbuf->pb_data;
if (len > pd->lmw) {
- if (m_makewritable(&m, 0, len, M_DONTWAIT))
+ if ((p = pbuf_ensure_writable(pbuf, len)) == NULL) {
len = -1;
+ }
pd->lmw = len;
- if (len >= 0 && m != pd->mp) {
- pd->mp = m;
- pd->pf_mtag = pf_find_mtag(m);
+ if (len >= 0) {
+ pd->pf_mtag = pf_find_mtag_pbuf(pbuf);
switch (pd->af) {
case AF_INET: {
- struct ip *h = mtod(m, struct ip *);
- pd->src = (struct pf_addr *)&h->ip_src;
- pd->dst = (struct pf_addr *)&h->ip_dst;
+ struct ip *h = p;
+ pd->src = (struct pf_addr *)(uintptr_t)&h->ip_src;
+ pd->dst = (struct pf_addr *)(uintptr_t)&h->ip_dst;
pd->ip_sum = &h->ip_sum;
break;
}
#if INET6
case AF_INET6: {
- struct ip6_hdr *h = mtod(m, struct ip6_hdr *);
- pd->src = (struct pf_addr *)&h->ip6_src;
- pd->dst = (struct pf_addr *)&h->ip6_dst;
+ struct ip6_hdr *h = p;
+ pd->src = (struct pf_addr *)(uintptr_t)&h->ip6_src;
+ pd->dst = (struct pf_addr *)(uintptr_t)&h->ip6_dst;
break;
}
#endif /* INET6 */
}
}
- return (len < 0 ? 0 : m);
+ return len < 0 ? NULL : p;
}
static const int *
pf_state_lookup_aux(struct pf_state **state, struct pfi_kif *kif,
- int direction, int *action)
+ int direction, int *action)
{
if (*state == NULL || (*state)->timeout == PFTM_PURGE) {
*action = PF_DROP;
- return (action);
+ return action;
}
if (direction == PF_OUT &&
(*state)->rule.ptr->direction == PF_IN)) &&
(*state)->rt_kif != NULL && (*state)->rt_kif != kif) {
*action = PF_PASS;
- return (action);
+ return action;
}
- return (0);
+ return 0;
}
-#define STATE_LOOKUP() \
- do { \
- int action; \
- *state = pf_find_state(kif, &key, direction); \
- if (*state != NULL && pd != NULL && \
- !(pd->pktflags & PKTF_FLOW_ID)) { \
- pd->flowsrc = (*state)->state_key->flowsrc; \
- pd->flowhash = (*state)->state_key->flowhash; \
- if (pd->flowhash != 0) { \
- pd->pktflags |= PKTF_FLOW_ID; \
- pd->pktflags &= ~PKTF_FLOW_ADV; \
- } \
- } \
- if (pf_state_lookup_aux(state, kif, direction, &action)) \
- return (action); \
+#define STATE_LOOKUP() \
+ do { \
+ int action; \
+ *state = pf_find_state(kif, &key, direction); \
+ if (*state != NULL && pd != NULL && \
+ !(pd->pktflags & PKTF_FLOW_ID)) { \
+ pd->flowsrc = (*state)->state_key->flowsrc; \
+ pd->flowhash = (*state)->state_key->flowhash; \
+ if (pd->flowhash != 0) { \
+ pd->pktflags |= PKTF_FLOW_ID; \
+ pd->pktflags &= ~PKTF_FLOW_ADV; \
+ } \
+ } \
+ if (pf_state_lookup_aux(state, kif, direction, &action)) \
+ return (action); \
} while (0)
-#define STATE_ADDR_TRANSLATE(sk) \
- (sk)->lan.addr.addr32[0] != (sk)->gwy.addr.addr32[0] || \
- ((sk)->af == AF_INET6 && \
- ((sk)->lan.addr.addr32[1] != (sk)->gwy.addr.addr32[1] || \
- (sk)->lan.addr.addr32[2] != (sk)->gwy.addr.addr32[2] || \
+#define STATE_ADDR_TRANSLATE(sk) \
+ (sk)->lan.addr.addr32[0] != (sk)->gwy.addr.addr32[0] || \
+ ((sk)->af_lan == AF_INET6 && \
+ ((sk)->lan.addr.addr32[1] != (sk)->gwy.addr.addr32[1] || \
+ (sk)->lan.addr.addr32[2] != (sk)->gwy.addr.addr32[2] || \
(sk)->lan.addr.addr32[3] != (sk)->gwy.addr.addr32[3]))
-#define STATE_TRANSLATE(sk) \
- (STATE_ADDR_TRANSLATE(sk) || \
+#define STATE_TRANSLATE(sk) \
+ ((sk)->af_lan != (sk)->af_gwy || \
+ STATE_ADDR_TRANSLATE(sk) || \
(sk)->lan.xport.port != (sk)->gwy.xport.port)
-#define STATE_GRE_TRANSLATE(sk) \
- (STATE_ADDR_TRANSLATE(sk) || \
+#define STATE_GRE_TRANSLATE(sk) \
+ (STATE_ADDR_TRANSLATE(sk) || \
(sk)->lan.xport.call_id != (sk)->gwy.xport.call_id)
#define BOUND_IFACE(r, k) \
((r)->rule_flag & PFRULE_IFBOUND) ? (k) : pfi_all
-#define STATE_INC_COUNTERS(s) \
- do { \
- s->rule.ptr->states++; \
- VERIFY(s->rule.ptr->states != 0); \
- if (s->anchor.ptr != NULL) { \
- s->anchor.ptr->states++; \
- VERIFY(s->anchor.ptr->states != 0); \
- } \
- if (s->nat_rule.ptr != NULL) { \
- s->nat_rule.ptr->states++; \
- VERIFY(s->nat_rule.ptr->states != 0); \
- } \
+#define STATE_INC_COUNTERS(s) \
+ do { \
+ s->rule.ptr->states++; \
+ VERIFY(s->rule.ptr->states != 0); \
+ if (s->anchor.ptr != NULL) { \
+ s->anchor.ptr->states++; \
+ VERIFY(s->anchor.ptr->states != 0); \
+ } \
+ if (s->nat_rule.ptr != NULL) { \
+ s->nat_rule.ptr->states++; \
+ VERIFY(s->nat_rule.ptr->states != 0); \
+ } \
} while (0)
-#define STATE_DEC_COUNTERS(s) \
- do { \
- if (s->nat_rule.ptr != NULL) { \
- VERIFY(s->nat_rule.ptr->states > 0); \
- s->nat_rule.ptr->states--; \
- } \
- if (s->anchor.ptr != NULL) { \
- VERIFY(s->anchor.ptr->states > 0); \
- s->anchor.ptr->states--; \
- } \
- VERIFY(s->rule.ptr->states > 0); \
- s->rule.ptr->states--; \
+#define STATE_DEC_COUNTERS(s) \
+ do { \
+ if (s->nat_rule.ptr != NULL) { \
+ VERIFY(s->nat_rule.ptr->states > 0); \
+ s->nat_rule.ptr->states--; \
+ } \
+ if (s->anchor.ptr != NULL) { \
+ VERIFY(s->anchor.ptr->states > 0); \
+ s->anchor.ptr->states--; \
+ } \
+ VERIFY(s->rule.ptr->states > 0); \
+ s->rule.ptr->states--; \
} while (0)
static __inline int pf_src_compare(struct pf_src_node *, struct pf_src_node *);
static __inline int pf_state_compare_lan_ext(struct pf_state_key *,
- struct pf_state_key *);
+ struct pf_state_key *);
static __inline int pf_state_compare_ext_gwy(struct pf_state_key *,
- struct pf_state_key *);
+ struct pf_state_key *);
static __inline int pf_state_compare_id(struct pf_state *,
- struct pf_state *);
+ struct pf_state *);
struct pf_src_tree tree_src_tracking;
RB_GENERATE(pf_state_tree_id, pf_state,
entry_id, pf_state_compare_id);
-#define PF_DT_SKIP_LANEXT 0x01
-#define PF_DT_SKIP_EXTGWY 0x02
+#define PF_DT_SKIP_LANEXT 0x01
+#define PF_DT_SKIP_EXTGWY 0x02
static const u_int16_t PF_PPTP_PORT = 1723;
static const u_int32_t PF_PPTP_MAGIC_NUMBER = 0x1A2B3C4D;
struct pf_pptp_hdr {
- u_int16_t length;
- u_int16_t type;
- u_int32_t magic;
+ u_int16_t length;
+ u_int16_t type;
+ u_int32_t magic;
};
struct pf_pptp_ctrl_hdr {
- u_int16_t type;
- u_int16_t reserved_0;
+ u_int16_t type;
+ u_int16_t reserved_0;
};
struct pf_pptp_ctrl_generic {
- u_int16_t data[0];
+ u_int16_t data[0];
};
-#define PF_PPTP_CTRL_TYPE_START_REQ 1
+#define PF_PPTP_CTRL_TYPE_START_REQ 1
struct pf_pptp_ctrl_start_req {
- u_int16_t protocol_version;
- u_int16_t reserved_1;
- u_int32_t framing_capabilities;
- u_int32_t bearer_capabilities;
- u_int16_t maximum_channels;
- u_int16_t firmware_revision;
- u_int8_t host_name[64];
- u_int8_t vendor_string[64];
+ u_int16_t protocol_version;
+ u_int16_t reserved_1;
+ u_int32_t framing_capabilities;
+ u_int32_t bearer_capabilities;
+ u_int16_t maximum_channels;
+ u_int16_t firmware_revision;
+ u_int8_t host_name[64];
+ u_int8_t vendor_string[64];
};
-#define PF_PPTP_CTRL_TYPE_START_RPY 2
+#define PF_PPTP_CTRL_TYPE_START_RPY 2
struct pf_pptp_ctrl_start_rpy {
- u_int16_t protocol_version;
- u_int8_t result_code;
- u_int8_t error_code;
- u_int32_t framing_capabilities;
- u_int32_t bearer_capabilities;
- u_int16_t maximum_channels;
- u_int16_t firmware_revision;
- u_int8_t host_name[64];
- u_int8_t vendor_string[64];
+ u_int16_t protocol_version;
+ u_int8_t result_code;
+ u_int8_t error_code;
+ u_int32_t framing_capabilities;
+ u_int32_t bearer_capabilities;
+ u_int16_t maximum_channels;
+ u_int16_t firmware_revision;
+ u_int8_t host_name[64];
+ u_int8_t vendor_string[64];
};
-#define PF_PPTP_CTRL_TYPE_STOP_REQ 3
+#define PF_PPTP_CTRL_TYPE_STOP_REQ 3
struct pf_pptp_ctrl_stop_req {
- u_int8_t reason;
- u_int8_t reserved_1;
- u_int16_t reserved_2;
+ u_int8_t reason;
+ u_int8_t reserved_1;
+ u_int16_t reserved_2;
};
-#define PF_PPTP_CTRL_TYPE_STOP_RPY 4
+#define PF_PPTP_CTRL_TYPE_STOP_RPY 4
struct pf_pptp_ctrl_stop_rpy {
- u_int8_t reason;
- u_int8_t error_code;
- u_int16_t reserved_1;
+ u_int8_t reason;
+ u_int8_t error_code;
+ u_int16_t reserved_1;
};
-#define PF_PPTP_CTRL_TYPE_ECHO_REQ 5
+#define PF_PPTP_CTRL_TYPE_ECHO_REQ 5
struct pf_pptp_ctrl_echo_req {
- u_int32_t identifier;
+ u_int32_t identifier;
};
-#define PF_PPTP_CTRL_TYPE_ECHO_RPY 6
+#define PF_PPTP_CTRL_TYPE_ECHO_RPY 6
struct pf_pptp_ctrl_echo_rpy {
- u_int32_t identifier;
- u_int8_t result_code;
- u_int8_t error_code;
- u_int16_t reserved_1;
+ u_int32_t identifier;
+ u_int8_t result_code;
+ u_int8_t error_code;
+ u_int16_t reserved_1;
};
-#define PF_PPTP_CTRL_TYPE_CALL_OUT_REQ 7
+#define PF_PPTP_CTRL_TYPE_CALL_OUT_REQ 7
struct pf_pptp_ctrl_call_out_req {
- u_int16_t call_id;
- u_int16_t call_sernum;
- u_int32_t min_bps;
- u_int32_t bearer_type;
- u_int32_t framing_type;
- u_int16_t rxwindow_size;
- u_int16_t proc_delay;
- u_int8_t phone_num[64];
- u_int8_t sub_addr[64];
+ u_int16_t call_id;
+ u_int16_t call_sernum;
+ u_int32_t min_bps;
+ u_int32_t bearer_type;
+ u_int32_t framing_type;
+ u_int16_t rxwindow_size;
+ u_int16_t proc_delay;
+ u_int8_t phone_num[64];
+ u_int8_t sub_addr[64];
};
-#define PF_PPTP_CTRL_TYPE_CALL_OUT_RPY 8
+#define PF_PPTP_CTRL_TYPE_CALL_OUT_RPY 8
struct pf_pptp_ctrl_call_out_rpy {
- u_int16_t call_id;
- u_int16_t peer_call_id;
- u_int8_t result_code;
- u_int8_t error_code;
- u_int16_t cause_code;
- u_int32_t connect_speed;
- u_int16_t rxwindow_size;
- u_int16_t proc_delay;
- u_int32_t phy_channel_id;
+ u_int16_t call_id;
+ u_int16_t peer_call_id;
+ u_int8_t result_code;
+ u_int8_t error_code;
+ u_int16_t cause_code;
+ u_int32_t connect_speed;
+ u_int16_t rxwindow_size;
+ u_int16_t proc_delay;
+ u_int32_t phy_channel_id;
};
-#define PF_PPTP_CTRL_TYPE_CALL_IN_1ST 9
+#define PF_PPTP_CTRL_TYPE_CALL_IN_1ST 9
struct pf_pptp_ctrl_call_in_1st {
- u_int16_t call_id;
- u_int16_t call_sernum;
- u_int32_t bearer_type;
- u_int32_t phy_channel_id;
- u_int16_t dialed_number_len;
- u_int16_t dialing_number_len;
- u_int8_t dialed_num[64];
- u_int8_t dialing_num[64];
- u_int8_t sub_addr[64];
+ u_int16_t call_id;
+ u_int16_t call_sernum;
+ u_int32_t bearer_type;
+ u_int32_t phy_channel_id;
+ u_int16_t dialed_number_len;
+ u_int16_t dialing_number_len;
+ u_int8_t dialed_num[64];
+ u_int8_t dialing_num[64];
+ u_int8_t sub_addr[64];
};
-#define PF_PPTP_CTRL_TYPE_CALL_IN_2ND 10
+#define PF_PPTP_CTRL_TYPE_CALL_IN_2ND 10
struct pf_pptp_ctrl_call_in_2nd {
- u_int16_t call_id;
- u_int16_t peer_call_id;
- u_int8_t result_code;
- u_int8_t error_code;
- u_int16_t rxwindow_size;
- u_int16_t txdelay;
- u_int16_t reserved_1;
+ u_int16_t call_id;
+ u_int16_t peer_call_id;
+ u_int8_t result_code;
+ u_int8_t error_code;
+ u_int16_t rxwindow_size;
+ u_int16_t txdelay;
+ u_int16_t reserved_1;
};
-#define PF_PPTP_CTRL_TYPE_CALL_IN_3RD 11
+#define PF_PPTP_CTRL_TYPE_CALL_IN_3RD 11
struct pf_pptp_ctrl_call_in_3rd {
- u_int16_t call_id;
- u_int16_t reserved_1;
- u_int32_t connect_speed;
- u_int16_t rxwindow_size;
- u_int16_t txdelay;
- u_int32_t framing_type;
+ u_int16_t call_id;
+ u_int16_t reserved_1;
+ u_int32_t connect_speed;
+ u_int16_t rxwindow_size;
+ u_int16_t txdelay;
+ u_int32_t framing_type;
};
-#define PF_PPTP_CTRL_TYPE_CALL_CLR 12
+#define PF_PPTP_CTRL_TYPE_CALL_CLR 12
struct pf_pptp_ctrl_call_clr {
- u_int16_t call_id;
- u_int16_t reserved_1;
+ u_int16_t call_id;
+ u_int16_t reserved_1;
};
-#define PF_PPTP_CTRL_TYPE_CALL_DISC 13
+#define PF_PPTP_CTRL_TYPE_CALL_DISC 13
struct pf_pptp_ctrl_call_disc {
- u_int16_t call_id;
- u_int8_t result_code;
- u_int8_t error_code;
- u_int16_t cause_code;
- u_int16_t reserved_1;
- u_int8_t statistics[128];
+ u_int16_t call_id;
+ u_int8_t result_code;
+ u_int8_t error_code;
+ u_int16_t cause_code;
+ u_int16_t reserved_1;
+ u_int8_t statistics[128];
};
-#define PF_PPTP_CTRL_TYPE_ERROR 14
+#define PF_PPTP_CTRL_TYPE_ERROR 14
struct pf_pptp_ctrl_error {
- u_int16_t peer_call_id;
- u_int16_t reserved_1;
- u_int32_t crc_errors;
- u_int32_t fr_errors;
- u_int32_t hw_errors;
- u_int32_t buf_errors;
- u_int32_t tim_errors;
- u_int32_t align_errors;
+ u_int16_t peer_call_id;
+ u_int16_t reserved_1;
+ u_int32_t crc_errors;
+ u_int32_t fr_errors;
+ u_int32_t hw_errors;
+ u_int32_t buf_errors;
+ u_int32_t tim_errors;
+ u_int32_t align_errors;
};
-#define PF_PPTP_CTRL_TYPE_SET_LINKINFO 15
+#define PF_PPTP_CTRL_TYPE_SET_LINKINFO 15
struct pf_pptp_ctrl_set_linkinfo {
- u_int16_t peer_call_id;
- u_int16_t reserved_1;
- u_int32_t tx_accm;
- u_int32_t rx_accm;
+ u_int16_t peer_call_id;
+ u_int16_t reserved_1;
+ u_int32_t tx_accm;
+ u_int32_t rx_accm;
};
#if 0
-static const char *pf_pptp_ctrl_type_name(u_int16_t code)
+static const char *
+pf_pptp_ctrl_type_name(u_int16_t code)
{
code = ntohs(code);
static char reserved[] = "reserved-00";
sprintf(&reserved[9], "%02x", code);
- return (reserved);
+ return reserved;
} else {
static const char *name[] = {
"start_req", "start_rpy", "stop_req", "stop_rpy",
"call_clr", "call_disc", "error", "set_linkinfo"
};
- return (name[code - 1]);
+ return name[code - 1];
}
};
#endif
static const size_t PF_PPTP_CTRL_MSG_MINSIZE =
- sizeof (struct pf_pptp_hdr) +
- sizeof (struct pf_pptp_ctrl_hdr) +
- MIN(sizeof (struct pf_pptp_ctrl_start_req),
- MIN(sizeof (struct pf_pptp_ctrl_start_rpy),
- MIN(sizeof (struct pf_pptp_ctrl_stop_req),
- MIN(sizeof (struct pf_pptp_ctrl_stop_rpy),
- MIN(sizeof (struct pf_pptp_ctrl_echo_req),
- MIN(sizeof (struct pf_pptp_ctrl_echo_rpy),
- MIN(sizeof (struct pf_pptp_ctrl_call_out_req),
- MIN(sizeof (struct pf_pptp_ctrl_call_out_rpy),
- MIN(sizeof (struct pf_pptp_ctrl_call_in_1st),
- MIN(sizeof (struct pf_pptp_ctrl_call_in_2nd),
- MIN(sizeof (struct pf_pptp_ctrl_call_in_3rd),
- MIN(sizeof (struct pf_pptp_ctrl_call_clr),
- MIN(sizeof (struct pf_pptp_ctrl_call_disc),
- MIN(sizeof (struct pf_pptp_ctrl_error),
- sizeof (struct pf_pptp_ctrl_set_linkinfo)
- ))))))))))))));
+ sizeof(struct pf_pptp_hdr) + sizeof(struct pf_pptp_ctrl_hdr);
union pf_pptp_ctrl_msg_union {
- struct pf_pptp_ctrl_start_req start_req;
- struct pf_pptp_ctrl_start_rpy start_rpy;
- struct pf_pptp_ctrl_stop_req stop_req;
- struct pf_pptp_ctrl_stop_rpy stop_rpy;
- struct pf_pptp_ctrl_echo_req echo_req;
- struct pf_pptp_ctrl_echo_rpy echo_rpy;
- struct pf_pptp_ctrl_call_out_req call_out_req;
- struct pf_pptp_ctrl_call_out_rpy call_out_rpy;
- struct pf_pptp_ctrl_call_in_1st call_in_1st;
- struct pf_pptp_ctrl_call_in_2nd call_in_2nd;
- struct pf_pptp_ctrl_call_in_3rd call_in_3rd;
- struct pf_pptp_ctrl_call_clr call_clr;
- struct pf_pptp_ctrl_call_disc call_disc;
- struct pf_pptp_ctrl_error error;
- struct pf_pptp_ctrl_set_linkinfo set_linkinfo;
- u_int8_t data[0];
+ struct pf_pptp_ctrl_start_req start_req;
+ struct pf_pptp_ctrl_start_rpy start_rpy;
+ struct pf_pptp_ctrl_stop_req stop_req;
+ struct pf_pptp_ctrl_stop_rpy stop_rpy;
+ struct pf_pptp_ctrl_echo_req echo_req;
+ struct pf_pptp_ctrl_echo_rpy echo_rpy;
+ struct pf_pptp_ctrl_call_out_req call_out_req;
+ struct pf_pptp_ctrl_call_out_rpy call_out_rpy;
+ struct pf_pptp_ctrl_call_in_1st call_in_1st;
+ struct pf_pptp_ctrl_call_in_2nd call_in_2nd;
+ struct pf_pptp_ctrl_call_in_3rd call_in_3rd;
+ struct pf_pptp_ctrl_call_clr call_clr;
+ struct pf_pptp_ctrl_call_disc call_disc;
+ struct pf_pptp_ctrl_error error;
+ struct pf_pptp_ctrl_set_linkinfo set_linkinfo;
+ u_int8_t data[0];
};
struct pf_pptp_ctrl_msg {
- struct pf_pptp_hdr hdr;
- struct pf_pptp_ctrl_hdr ctrl;
- union pf_pptp_ctrl_msg_union msg;
+ struct pf_pptp_hdr hdr;
+ struct pf_pptp_ctrl_hdr ctrl;
+ union pf_pptp_ctrl_msg_union msg;
};
-#define PF_GRE_FLAG_CHECKSUM_PRESENT 0x8000
-#define PF_GRE_FLAG_VERSION_MASK 0x0007
-#define PF_GRE_PPP_ETHERTYPE 0x880B
+#define PF_GRE_FLAG_CHECKSUM_PRESENT 0x8000
+#define PF_GRE_FLAG_VERSION_MASK 0x0007
+#define PF_GRE_PPP_ETHERTYPE 0x880B
struct pf_grev1_hdr {
u_int16_t flags;
u_int16_t payload_length;
u_int16_t call_id;
/*
- u_int32_t seqno;
- u_int32_t ackno;
- */
+ * u_int32_t seqno;
+ * u_int32_t ackno;
+ */
};
static const u_int16_t PF_IKE_PORT = 500;
u_int32_t message_id, length;
};
-#define PF_IKE_PACKET_MINSIZE (sizeof (struct pf_ike_hdr))
-
-#define PF_IKEv1_EXCHTYPE_BASE 1
-#define PF_IKEv1_EXCHTYPE_ID_PROTECT 2
-#define PF_IKEv1_EXCHTYPE_AUTH_ONLY 3
-#define PF_IKEv1_EXCHTYPE_AGGRESSIVE 4
-#define PF_IKEv1_EXCHTYPE_INFORMATIONAL 5
-#define PF_IKEv2_EXCHTYPE_SA_INIT 34
-#define PF_IKEv2_EXCHTYPE_AUTH 35
-#define PF_IKEv2_EXCHTYPE_CREATE_CHILD_SA 36
-#define PF_IKEv2_EXCHTYPE_INFORMATIONAL 37
-
-#define PF_IKEv1_FLAG_E 0x01
-#define PF_IKEv1_FLAG_C 0x02
-#define PF_IKEv1_FLAG_A 0x04
-#define PF_IKEv2_FLAG_I 0x08
-#define PF_IKEv2_FLAG_V 0x10
-#define PF_IKEv2_FLAG_R 0x20
+#define PF_IKE_PACKET_MINSIZE (sizeof (struct pf_ike_hdr))
+
+#define PF_IKEv1_EXCHTYPE_BASE 1
+#define PF_IKEv1_EXCHTYPE_ID_PROTECT 2
+#define PF_IKEv1_EXCHTYPE_AUTH_ONLY 3
+#define PF_IKEv1_EXCHTYPE_AGGRESSIVE 4
+#define PF_IKEv1_EXCHTYPE_INFORMATIONAL 5
+#define PF_IKEv2_EXCHTYPE_SA_INIT 34
+#define PF_IKEv2_EXCHTYPE_AUTH 35
+#define PF_IKEv2_EXCHTYPE_CREATE_CHILD_SA 36
+#define PF_IKEv2_EXCHTYPE_INFORMATIONAL 37
+
+#define PF_IKEv1_FLAG_E 0x01
+#define PF_IKEv1_FLAG_C 0x02
+#define PF_IKEv1_FLAG_A 0x04
+#define PF_IKEv2_FLAG_I 0x08
+#define PF_IKEv2_FLAG_V 0x10
+#define PF_IKEv2_FLAG_R 0x20
struct pf_esp_hdr {
u_int32_t spi;
};
static __inline int
-pf_src_compare(struct pf_src_node *a, struct pf_src_node *b)
+pf_addr_compare(struct pf_addr *a, struct pf_addr *b, sa_family_t af)
{
- int diff;
-
- if (a->rule.ptr > b->rule.ptr)
- return (1);
- if (a->rule.ptr < b->rule.ptr)
- return (-1);
- if ((diff = a->af - b->af) != 0)
- return (diff);
- switch (a->af) {
-#if INET
+ switch (af) {
+#ifdef INET
case AF_INET:
- if (a->addr.addr32[0] > b->addr.addr32[0])
- return (1);
- if (a->addr.addr32[0] < b->addr.addr32[0])
- return (-1);
+ if (a->addr32[0] > b->addr32[0]) {
+ return 1;
+ }
+ if (a->addr32[0] < b->addr32[0]) {
+ return -1;
+ }
break;
#endif /* INET */
-#if INET6
+#ifdef INET6
case AF_INET6:
- if (a->addr.addr32[3] > b->addr.addr32[3])
- return (1);
- if (a->addr.addr32[3] < b->addr.addr32[3])
- return (-1);
- if (a->addr.addr32[2] > b->addr.addr32[2])
- return (1);
- if (a->addr.addr32[2] < b->addr.addr32[2])
- return (-1);
- if (a->addr.addr32[1] > b->addr.addr32[1])
- return (1);
- if (a->addr.addr32[1] < b->addr.addr32[1])
- return (-1);
- if (a->addr.addr32[0] > b->addr.addr32[0])
- return (1);
- if (a->addr.addr32[0] < b->addr.addr32[0])
- return (-1);
+ if (a->addr32[3] > b->addr32[3]) {
+ return 1;
+ }
+ if (a->addr32[3] < b->addr32[3]) {
+ return -1;
+ }
+ if (a->addr32[2] > b->addr32[2]) {
+ return 1;
+ }
+ if (a->addr32[2] < b->addr32[2]) {
+ return -1;
+ }
+ if (a->addr32[1] > b->addr32[1]) {
+ return 1;
+ }
+ if (a->addr32[1] < b->addr32[1]) {
+ return -1;
+ }
+ if (a->addr32[0] > b->addr32[0]) {
+ return 1;
+ }
+ if (a->addr32[0] < b->addr32[0]) {
+ return -1;
+ }
break;
#endif /* INET6 */
}
- return (0);
+ return 0;
+}
+
+static __inline int
+pf_src_compare(struct pf_src_node *a, struct pf_src_node *b)
+{
+ int diff;
+
+ if (a->rule.ptr > b->rule.ptr) {
+ return 1;
+ }
+ if (a->rule.ptr < b->rule.ptr) {
+ return -1;
+ }
+ if ((diff = a->af - b->af) != 0) {
+ return diff;
+ }
+ if ((diff = pf_addr_compare(&a->addr, &b->addr, a->af)) != 0) {
+ return diff;
+ }
+ return 0;
}
static __inline int
pf_state_compare_lan_ext(struct pf_state_key *a, struct pf_state_key *b)
{
- int diff;
- int extfilter;
+ int diff;
+ int extfilter;
- if ((diff = a->proto - b->proto) != 0)
- return (diff);
- if ((diff = a->af - b->af) != 0)
- return (diff);
+ if ((diff = a->proto - b->proto) != 0) {
+ return diff;
+ }
+ if ((diff = a->af_lan - b->af_lan) != 0) {
+ return diff;
+ }
extfilter = PF_EXTFILTER_APD;
switch (a->proto) {
case IPPROTO_ICMP:
case IPPROTO_ICMPV6:
- if ((diff = a->lan.xport.port - b->lan.xport.port) != 0)
- return (diff);
+ if ((diff = a->lan.xport.port - b->lan.xport.port) != 0) {
+ return diff;
+ }
break;
case IPPROTO_TCP:
- if ((diff = a->lan.xport.port - b->lan.xport.port) != 0)
- return (diff);
- if ((diff = a->ext.xport.port - b->ext.xport.port) != 0)
- return (diff);
+ if ((diff = a->lan.xport.port - b->lan.xport.port) != 0) {
+ return diff;
+ }
+ if ((diff = a->ext_lan.xport.port - b->ext_lan.xport.port) != 0) {
+ return diff;
+ }
break;
case IPPROTO_UDP:
- if ((diff = a->proto_variant - b->proto_variant))
- return (diff);
+ if ((diff = a->proto_variant - b->proto_variant)) {
+ return diff;
+ }
extfilter = a->proto_variant;
- if ((diff = a->lan.xport.port - b->lan.xport.port) != 0)
- return (diff);
+ if ((diff = a->lan.xport.port - b->lan.xport.port) != 0) {
+ return diff;
+ }
if ((extfilter < PF_EXTFILTER_AD) &&
- (diff = a->ext.xport.port - b->ext.xport.port) != 0)
- return (diff);
+ (diff = a->ext_lan.xport.port - b->ext_lan.xport.port) != 0) {
+ return diff;
+ }
break;
case IPPROTO_GRE:
if (a->proto_variant == PF_GRE_PPTP_VARIANT &&
a->proto_variant == b->proto_variant) {
- if (!!(diff = a->ext.xport.call_id -
- b->ext.xport.call_id))
- return (diff);
+ if (!!(diff = a->ext_lan.xport.call_id -
+ b->ext_lan.xport.call_id)) {
+ return diff;
+ }
}
break;
case IPPROTO_ESP:
- if (!!(diff = a->ext.xport.spi - b->ext.xport.spi))
- return (diff);
+ if (!!(diff = a->ext_lan.xport.spi - b->ext_lan.xport.spi)) {
+ return diff;
+ }
break;
default:
break;
}
- switch (a->af) {
+ switch (a->af_lan) {
#if INET
case AF_INET:
- if (a->lan.addr.addr32[0] > b->lan.addr.addr32[0])
- return (1);
- if (a->lan.addr.addr32[0] < b->lan.addr.addr32[0])
- return (-1);
+ if ((diff = pf_addr_compare(&a->lan.addr, &b->lan.addr,
+ a->af_lan)) != 0) {
+ return diff;
+ }
+
if (extfilter < PF_EXTFILTER_EI) {
- if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
- return (1);
- if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
- return (-1);
+ if ((diff = pf_addr_compare(&a->ext_lan.addr,
+ &b->ext_lan.addr,
+ a->af_lan)) != 0) {
+ return diff;
+ }
}
break;
#endif /* INET */
#if INET6
case AF_INET6:
- if (a->lan.addr.addr32[3] > b->lan.addr.addr32[3])
- return (1);
- if (a->lan.addr.addr32[3] < b->lan.addr.addr32[3])
- return (-1);
- if (a->lan.addr.addr32[2] > b->lan.addr.addr32[2])
- return (1);
- if (a->lan.addr.addr32[2] < b->lan.addr.addr32[2])
- return (-1);
- if (a->lan.addr.addr32[1] > b->lan.addr.addr32[1])
- return (1);
- if (a->lan.addr.addr32[1] < b->lan.addr.addr32[1])
- return (-1);
- if (a->lan.addr.addr32[0] > b->lan.addr.addr32[0])
- return (1);
- if (a->lan.addr.addr32[0] < b->lan.addr.addr32[0])
- return (-1);
+ if ((diff = pf_addr_compare(&a->lan.addr, &b->lan.addr,
+ a->af_lan)) != 0) {
+ return diff;
+ }
+
if (extfilter < PF_EXTFILTER_EI ||
- !PF_AZERO(&b->ext.addr, AF_INET6)) {
- if (a->ext.addr.addr32[3] > b->ext.addr.addr32[3])
- return (1);
- if (a->ext.addr.addr32[3] < b->ext.addr.addr32[3])
- return (-1);
- if (a->ext.addr.addr32[2] > b->ext.addr.addr32[2])
- return (1);
- if (a->ext.addr.addr32[2] < b->ext.addr.addr32[2])
- return (-1);
- if (a->ext.addr.addr32[1] > b->ext.addr.addr32[1])
- return (1);
- if (a->ext.addr.addr32[1] < b->ext.addr.addr32[1])
- return (-1);
- if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
- return (1);
- if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
- return (-1);
+ !PF_AZERO(&b->ext_lan.addr, AF_INET6)) {
+ if ((diff = pf_addr_compare(&a->ext_lan.addr,
+ &b->ext_lan.addr,
+ a->af_lan)) != 0) {
+ return diff;
+ }
}
break;
#endif /* INET6 */
b->app_state->compare_lan_ext) {
diff = (const char *)b->app_state->compare_lan_ext -
(const char *)a->app_state->compare_lan_ext;
- if (diff != 0)
- return (diff);
+ if (diff != 0) {
+ return diff;
+ }
diff = a->app_state->compare_lan_ext(a->app_state,
b->app_state);
- if (diff != 0)
- return (diff);
+ if (diff != 0) {
+ return diff;
+ }
}
}
- return (0);
+ return 0;
}
static __inline int
pf_state_compare_ext_gwy(struct pf_state_key *a, struct pf_state_key *b)
{
- int diff;
- int extfilter;
+ int diff;
+ int extfilter;
- if ((diff = a->proto - b->proto) != 0)
- return (diff);
+ if ((diff = a->proto - b->proto) != 0) {
+ return diff;
+ }
- if ((diff = a->af - b->af) != 0)
- return (diff);
+ if ((diff = a->af_gwy - b->af_gwy) != 0) {
+ return diff;
+ }
extfilter = PF_EXTFILTER_APD;
switch (a->proto) {
case IPPROTO_ICMP:
case IPPROTO_ICMPV6:
- if ((diff = a->gwy.xport.port - b->gwy.xport.port) != 0)
- return (diff);
+ if ((diff = a->gwy.xport.port - b->gwy.xport.port) != 0) {
+ return diff;
+ }
break;
case IPPROTO_TCP:
- if ((diff = a->ext.xport.port - b->ext.xport.port) != 0)
- return (diff);
- if ((diff = a->gwy.xport.port - b->gwy.xport.port) != 0)
- return (diff);
+ if ((diff = a->ext_gwy.xport.port - b->ext_gwy.xport.port) != 0) {
+ return diff;
+ }
+ if ((diff = a->gwy.xport.port - b->gwy.xport.port) != 0) {
+ return diff;
+ }
break;
case IPPROTO_UDP:
- if ((diff = a->proto_variant - b->proto_variant))
- return (diff);
+ if ((diff = a->proto_variant - b->proto_variant)) {
+ return diff;
+ }
extfilter = a->proto_variant;
- if ((diff = a->gwy.xport.port - b->gwy.xport.port) != 0)
- return (diff);
+ if ((diff = a->gwy.xport.port - b->gwy.xport.port) != 0) {
+ return diff;
+ }
if ((extfilter < PF_EXTFILTER_AD) &&
- (diff = a->ext.xport.port - b->ext.xport.port) != 0)
- return (diff);
+ (diff = a->ext_gwy.xport.port - b->ext_gwy.xport.port) != 0) {
+ return diff;
+ }
break;
case IPPROTO_GRE:
if (a->proto_variant == PF_GRE_PPTP_VARIANT &&
a->proto_variant == b->proto_variant) {
if (!!(diff = a->gwy.xport.call_id -
- b->gwy.xport.call_id))
- return (diff);
+ b->gwy.xport.call_id)) {
+ return diff;
+ }
}
break;
case IPPROTO_ESP:
- if (!!(diff = a->gwy.xport.spi - b->gwy.xport.spi))
- return (diff);
+ if (!!(diff = a->gwy.xport.spi - b->gwy.xport.spi)) {
+ return diff;
+ }
break;
default:
break;
}
- switch (a->af) {
+ switch (a->af_gwy) {
#if INET
case AF_INET:
- if (a->gwy.addr.addr32[0] > b->gwy.addr.addr32[0])
- return (1);
- if (a->gwy.addr.addr32[0] < b->gwy.addr.addr32[0])
- return (-1);
+ if ((diff = pf_addr_compare(&a->gwy.addr, &b->gwy.addr,
+ a->af_gwy)) != 0) {
+ return diff;
+ }
+
if (extfilter < PF_EXTFILTER_EI) {
- if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
- return (1);
- if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
- return (-1);
+ if ((diff = pf_addr_compare(&a->ext_gwy.addr, &b->ext_gwy.addr,
+ a->af_gwy)) != 0) {
+ return diff;
+ }
}
break;
#endif /* INET */
#if INET6
case AF_INET6:
- if (a->gwy.addr.addr32[3] > b->gwy.addr.addr32[3])
- return (1);
- if (a->gwy.addr.addr32[3] < b->gwy.addr.addr32[3])
- return (-1);
- if (a->gwy.addr.addr32[2] > b->gwy.addr.addr32[2])
- return (1);
- if (a->gwy.addr.addr32[2] < b->gwy.addr.addr32[2])
- return (-1);
- if (a->gwy.addr.addr32[1] > b->gwy.addr.addr32[1])
- return (1);
- if (a->gwy.addr.addr32[1] < b->gwy.addr.addr32[1])
- return (-1);
- if (a->gwy.addr.addr32[0] > b->gwy.addr.addr32[0])
- return (1);
- if (a->gwy.addr.addr32[0] < b->gwy.addr.addr32[0])
- return (-1);
+ if ((diff = pf_addr_compare(&a->gwy.addr, &b->gwy.addr,
+ a->af_gwy)) != 0) {
+ return diff;
+ }
+
if (extfilter < PF_EXTFILTER_EI ||
- !PF_AZERO(&b->ext.addr, AF_INET6)) {
- if (a->ext.addr.addr32[3] > b->ext.addr.addr32[3])
- return (1);
- if (a->ext.addr.addr32[3] < b->ext.addr.addr32[3])
- return (-1);
- if (a->ext.addr.addr32[2] > b->ext.addr.addr32[2])
- return (1);
- if (a->ext.addr.addr32[2] < b->ext.addr.addr32[2])
- return (-1);
- if (a->ext.addr.addr32[1] > b->ext.addr.addr32[1])
- return (1);
- if (a->ext.addr.addr32[1] < b->ext.addr.addr32[1])
- return (-1);
- if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
- return (1);
- if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
- return (-1);
+ !PF_AZERO(&b->ext_gwy.addr, AF_INET6)) {
+ if ((diff = pf_addr_compare(&a->ext_gwy.addr, &b->ext_gwy.addr,
+ a->af_gwy)) != 0) {
+ return diff;
+ }
}
break;
#endif /* INET6 */
b->app_state->compare_ext_gwy) {
diff = (const char *)b->app_state->compare_ext_gwy -
(const char *)a->app_state->compare_ext_gwy;
- if (diff != 0)
- return (diff);
+ if (diff != 0) {
+ return diff;
+ }
diff = a->app_state->compare_ext_gwy(a->app_state,
b->app_state);
- if (diff != 0)
- return (diff);
+ if (diff != 0) {
+ return diff;
+ }
}
}
- return (0);
+ return 0;
}
static __inline int
pf_state_compare_id(struct pf_state *a, struct pf_state *b)
{
- if (a->id > b->id)
- return (1);
- if (a->id < b->id)
- return (-1);
- if (a->creatorid > b->creatorid)
- return (1);
- if (a->creatorid < b->creatorid)
- return (-1);
-
- return (0);
+ if (a->id > b->id) {
+ return 1;
+ }
+ if (a->id < b->id) {
+ return -1;
+ }
+ if (a->creatorid > b->creatorid) {
+ return 1;
+ }
+ if (a->creatorid < b->creatorid) {
+ return -1;
+ }
+
+ return 0;
}
#if INET6
{
pf_status.fcounters[FCNT_STATE_SEARCH]++;
- return (RB_FIND(pf_state_tree_id, &tree_id,
- (struct pf_state *)(void *)key));
+ return RB_FIND(pf_state_tree_id, &tree_id,
+ (struct pf_state *)(void *)key);
}
static struct pf_state *
pf_find_state(struct pfi_kif *kif, struct pf_state_key_cmp *key, u_int dir)
{
- struct pf_state_key *sk = NULL;
- struct pf_state *s;
+ struct pf_state_key *sk = NULL;
+ struct pf_state *s;
pf_status.fcounters[FCNT_STATE_SEARCH]++;
case PF_IN:
sk = RB_FIND(pf_state_tree_ext_gwy, &pf_statetbl_ext_gwy,
(struct pf_state_key *)key);
+ /*
+ * NAT64 is done only on input, for packets coming in from
+ * from the LAN side, need to lookup the lan_ext tree.
+ */
+ if (sk == NULL) {
+ sk = RB_FIND(pf_state_tree_lan_ext,
+ &pf_statetbl_lan_ext,
+ (struct pf_state_key *)key);
+ if (sk && sk->af_lan == sk->af_gwy) {
+ sk = NULL;
+ }
+ }
break;
default:
panic("pf_find_state");
}
/* list is sorted, if-bound states before floating ones */
- if (sk != NULL)
+ if (sk != NULL) {
TAILQ_FOREACH(s, &sk->states, next)
- if (s->kif == pfi_all || s->kif == kif)
- return (s);
+ if (s->kif == pfi_all || s->kif == kif) {
+ return s;
+ }
+ }
- return (NULL);
+ return NULL;
}
struct pf_state *
pf_find_state_all(struct pf_state_key_cmp *key, u_int dir, int *more)
{
- struct pf_state_key *sk = NULL;
- struct pf_state *s, *ret = NULL;
+ struct pf_state_key *sk = NULL;
+ struct pf_state *s, *ret = NULL;
pf_status.fcounters[FCNT_STATE_SEARCH]++;
case PF_IN:
sk = RB_FIND(pf_state_tree_ext_gwy,
&pf_statetbl_ext_gwy, (struct pf_state_key *)key);
+ /*
+ * NAT64 is done only on input, for packets coming in from
+ * from the LAN side, need to lookup the lan_ext tree.
+ */
+ if ((sk == NULL) && pf_nat64_configured) {
+ sk = RB_FIND(pf_state_tree_lan_ext,
+ &pf_statetbl_lan_ext,
+ (struct pf_state_key *)key);
+ if (sk && sk->af_lan == sk->af_gwy) {
+ sk = NULL;
+ }
+ }
break;
default:
panic("pf_find_state_all");
if (sk != NULL) {
ret = TAILQ_FIRST(&sk->states);
- if (more == NULL)
- return (ret);
+ if (more == NULL) {
+ return ret;
+ }
TAILQ_FOREACH(s, &sk->states, next)
- (*more)++;
+ (*more)++;
}
- return (ret);
+ return ret;
}
static void
{
u_int32_t t = pf_time_second(), diff = t - threshold->last;
- if (diff >= threshold->seconds)
+ if (diff >= threshold->seconds) {
threshold->count = 0;
- else
+ } else {
threshold->count -= threshold->count * diff /
threshold->seconds;
+ }
threshold->count += PF_THRESHOLD_MULT;
threshold->last = t;
}
static int
pf_check_threshold(struct pf_threshold *threshold)
{
- return (threshold->count > threshold->limit);
+ return threshold->count > threshold->limit;
}
static int
pf_src_connlimit(struct pf_state **state)
{
int bad = 0;
-
(*state)->src_node->conn++;
VERIFY((*state)->src_node->conn != 0);
(*state)->src.tcp_est = 1;
bad++;
}
- if (!bad)
- return (0);
+ if (!bad) {
+ return 0;
+ }
if ((*state)->rule.ptr->overload_tbl) {
struct pfr_addr p;
- u_int32_t killed = 0;
+ u_int32_t killed = 0;
pf_status.lcounters[LCNT_OVERLOAD_TABLE]++;
if (pf_status.debug >= PF_DEBUG_MISC) {
printf("pf_src_connlimit: blocking address ");
pf_print_host(&(*state)->src_node->addr, 0,
- (*state)->state_key->af);
+ (*state)->state_key->af_lan);
}
- bzero(&p, sizeof (p));
- p.pfra_af = (*state)->state_key->af;
- switch ((*state)->state_key->af) {
+ bzero(&p, sizeof(p));
+ p.pfra_af = (*state)->state_key->af_lan;
+ switch ((*state)->state_key->af_lan) {
#if INET
case AF_INET:
p.pfra_net = 32;
- p.pfra_ip4addr = (*state)->src_node->addr.v4;
+ p.pfra_ip4addr = (*state)->src_node->addr.v4addr;
break;
#endif /* INET */
#if INET6
case AF_INET6:
p.pfra_net = 128;
- p.pfra_ip6addr = (*state)->src_node->addr.v6;
+ p.pfra_ip6addr = (*state)->src_node->addr.v6addr;
break;
#endif /* INET6 */
}
* from the same rule if PF_FLUSH_GLOBAL is not
* set)
*/
- if (sk->af ==
- (*state)->state_key->af &&
+ if (sk->af_lan ==
+ (*state)->state_key->af_lan &&
(((*state)->state_key->direction ==
- PF_OUT &&
+ PF_OUT &&
PF_AEQ(&(*state)->src_node->addr,
- &sk->lan.addr, sk->af)) ||
+ &sk->lan.addr, sk->af_lan)) ||
((*state)->state_key->direction == PF_IN &&
PF_AEQ(&(*state)->src_node->addr,
- &sk->ext.addr, sk->af))) &&
+ &sk->ext_lan.addr, sk->af_lan))) &&
((*state)->rule.ptr->flush &
PF_FLUSH_GLOBAL ||
(*state)->rule.ptr == st->rule.ptr)) {
killed++;
}
}
- if (pf_status.debug >= PF_DEBUG_MISC)
+ if (pf_status.debug >= PF_DEBUG_MISC) {
printf(", %u states killed", killed);
+ }
}
- if (pf_status.debug >= PF_DEBUG_MISC)
+ if (pf_status.debug >= PF_DEBUG_MISC) {
printf("\n");
+ }
}
/* kill this state */
(*state)->timeout = PFTM_PURGE;
(*state)->src.state = (*state)->dst.state = TCPS_CLOSED;
- return (1);
+ return 1;
}
int
pf_insert_src_node(struct pf_src_node **sn, struct pf_rule *rule,
struct pf_addr *src, sa_family_t af)
{
- struct pf_src_node k;
+ struct pf_src_node k;
if (*sn == NULL) {
k.af = af;
PF_ACPY(&k.addr, src, af);
if (rule->rule_flag & PFRULE_RULESRCTRACK ||
- rule->rpool.opts & PF_POOL_STICKYADDR)
+ rule->rpool.opts & PF_POOL_STICKYADDR) {
k.rule.ptr = rule;
- else
+ } else {
k.rule.ptr = NULL;
+ }
pf_status.scounters[SCNT_SRC_NODE_SEARCH]++;
*sn = RB_FIND(pf_src_tree, &tree_src_tracking, &k);
}
if (*sn == NULL) {
if (!rule->max_src_nodes ||
- rule->src_nodes < rule->max_src_nodes)
+ rule->src_nodes < rule->max_src_nodes) {
(*sn) = pool_get(&pf_src_tree_pl, PR_WAITOK);
- else
+ } else {
pf_status.lcounters[LCNT_SRCNODES]++;
- if ((*sn) == NULL)
- return (-1);
- bzero(*sn, sizeof (struct pf_src_node));
+ }
+ if ((*sn) == NULL) {
+ return -1;
+ }
+ bzero(*sn, sizeof(struct pf_src_node));
pf_init_threshold(&(*sn)->conn_rate,
rule->max_src_conn_rate.limit,
(*sn)->af = af;
if (rule->rule_flag & PFRULE_RULESRCTRACK ||
- rule->rpool.opts & PF_POOL_STICKYADDR)
+ rule->rpool.opts & PF_POOL_STICKYADDR) {
(*sn)->rule.ptr = rule;
- else
+ } else {
(*sn)->rule.ptr = NULL;
+ }
PF_ACPY(&(*sn)->addr, src, af);
if (RB_INSERT(pf_src_tree,
&tree_src_tracking, *sn) != NULL) {
printf("\n");
}
pool_put(&pf_src_tree_pl, *sn);
- return (-1);
+ return -1;
}
(*sn)->creation = pf_time_second();
(*sn)->ruletype = rule->action;
- if ((*sn)->rule.ptr != NULL)
+ if ((*sn)->rule.ptr != NULL) {
(*sn)->rule.ptr->src_nodes++;
+ }
pf_status.scounters[SCNT_SRC_NODE_INSERT]++;
pf_status.src_nodes++;
} else {
if (rule->max_src_states &&
(*sn)->states >= rule->max_src_states) {
pf_status.lcounters[LCNT_SRCSTATES]++;
- return (-1);
+ return -1;
}
}
- return (0);
+ return 0;
}
static void
pf_stateins_err(const char *tree, struct pf_state *s, struct pfi_kif *kif)
{
- struct pf_state_key *sk = s->state_key;
+ struct pf_state_key *sk = s->state_key;
if (pf_status.debug >= PF_DEBUG_MISC) {
printf("pf: state insert failed: %s %s ", tree, kif->pfik_name);
break;
}
printf(" lan: ");
- pf_print_sk_host(&sk->lan, sk->af, sk->proto,
+ pf_print_sk_host(&sk->lan, sk->af_lan, sk->proto,
sk->proto_variant);
printf(" gwy: ");
- pf_print_sk_host(&sk->gwy, sk->af, sk->proto,
+ pf_print_sk_host(&sk->gwy, sk->af_gwy, sk->proto,
+ sk->proto_variant);
+ printf(" ext_lan: ");
+ pf_print_sk_host(&sk->ext_lan, sk->af_lan, sk->proto,
sk->proto_variant);
- printf(" ext: ");
- pf_print_sk_host(&sk->ext, sk->af, sk->proto,
+ printf(" ext_gwy: ");
+ pf_print_sk_host(&sk->ext_gwy, sk->af_gwy, sk->proto,
sk->proto_variant);
- if (s->sync_flags & PFSTATE_FROMSYNC)
+ if (s->sync_flags & PFSTATE_FROMSYNC) {
printf(" (from sync)");
+ }
printf("\n");
}
}
int
pf_insert_state(struct pfi_kif *kif, struct pf_state *s)
{
- struct pf_state_key *cur;
- struct pf_state *sp;
+ struct pf_state_key *cur;
+ struct pf_state *sp;
VERIFY(s->state_key != NULL);
s->kif = kif;
s->state_key)) != NULL) {
/* key exists. check for same kif, if none, add to key */
TAILQ_FOREACH(sp, &cur->states, next)
- if (sp->kif == kif) { /* collision! */
- pf_stateins_err("tree_lan_ext", s, kif);
- pf_detach_state(s,
- PF_DT_SKIP_LANEXT|PF_DT_SKIP_EXTGWY);
- return (-1);
- }
- pf_detach_state(s, PF_DT_SKIP_LANEXT|PF_DT_SKIP_EXTGWY);
+ if (sp->kif == kif) { /* collision! */
+ pf_stateins_err("tree_lan_ext", s, kif);
+ pf_detach_state(s,
+ PF_DT_SKIP_LANEXT | PF_DT_SKIP_EXTGWY);
+ return -1;
+ }
+ pf_detach_state(s, PF_DT_SKIP_LANEXT | PF_DT_SKIP_EXTGWY);
pf_attach_state(cur, s, kif == pfi_all ? 1 : 0);
}
/* must not happen. we must have found the sk above! */
pf_stateins_err("tree_ext_gwy", s, kif);
pf_detach_state(s, PF_DT_SKIP_EXTGWY);
- return (-1);
+ return -1;
}
if (s->id == 0 && s->creatorid == 0) {
printf("pf: state insert failed: "
"id: %016llx creatorid: %08x",
be64toh(s->id), ntohl(s->creatorid));
- if (s->sync_flags & PFSTATE_FROMSYNC)
+ if (s->sync_flags & PFSTATE_FROMSYNC) {
printf(" (from sync)");
+ }
printf("\n");
}
pf_detach_state(s, 0);
- return (-1);
+ return -1;
}
TAILQ_INSERT_TAIL(&state_list, s, entry_list);
pf_status.fcounters[FCNT_STATE_INSERT]++;
#if NPFSYNC
pfsync_insert_state(s);
#endif
- return (0);
+ return 0;
}
static int
{
#pragma unused(err)
static u_int32_t nloops = 0;
- int t = 1; /* 1 second */
+ int t = 1; /* 1 second */
/*
* Update coarse-grained networking timestamp (in sec.); the idea
thread_deallocate(current_thread());
thread_terminate(current_thread());
/* NOTREACHED */
- return (0);
+ return 0;
} else {
/* if there's nothing left, sleep w/o timeout */
if (pf_status.states == 0 &&
/* NOTREACHED */
VERIFY(0);
- return (0);
+ return 0;
}
void
u_int64_t
pf_state_expires(const struct pf_state *state)
{
- u_int32_t t;
- u_int32_t start;
- u_int32_t end;
- u_int32_t states;
+ u_int32_t t;
+ u_int32_t start;
+ u_int32_t end;
+ u_int32_t states;
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
/* handle all PFTM_* > PFTM_MAX here */
- if (state->timeout == PFTM_PURGE)
- return (pf_time_second());
+ if (state->timeout == PFTM_PURGE) {
+ return pf_time_second();
+ }
VERIFY(state->timeout != PFTM_UNLINKED);
VERIFY(state->timeout < PFTM_MAX);
t = state->rule.ptr->timeout[state->timeout];
- if (!t)
+ if (!t) {
t = pf_default_rule.timeout[state->timeout];
+ }
start = state->rule.ptr->timeout[PFTM_ADAPTIVE_START];
if (start) {
end = state->rule.ptr->timeout[PFTM_ADAPTIVE_END];
states = pf_status.states;
}
if (end && states > start && start < end) {
- if (states < end)
- return (state->expire + t * (end - states) /
- (end - start));
- else
- return (pf_time_second());
+ if (states < end) {
+ return state->expire + t * (end - states) /
+ (end - start);
+ } else {
+ return pf_time_second();
+ }
}
- return (state->expire + t);
+ return state->expire + t;
}
void
pf_purge_expired_src_nodes(void)
{
- struct pf_src_node *cur, *next;
+ struct pf_src_node *cur, *next;
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
for (cur = RB_MIN(pf_src_tree, &tree_src_tracking); cur; cur = next) {
next = RB_NEXT(pf_src_tree, &tree_src_tracking, cur);
if (cur->rule.ptr != NULL) {
cur->rule.ptr->src_nodes--;
if (cur->rule.ptr->states <= 0 &&
- cur->rule.ptr->max_src_nodes <= 0)
+ cur->rule.ptr->max_src_nodes <= 0) {
pf_rm_rule(NULL, cur->rule.ptr);
+ }
}
RB_REMOVE(pf_src_tree, &tree_src_tracking, cur);
pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
{
u_int32_t t;
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
if (s->src_node != NULL) {
if (s->src.tcp_est) {
VERIFY(s->src_node->states > 0);
if (--s->src_node->states <= 0) {
t = s->rule.ptr->timeout[PFTM_SRC_NODE];
- if (!t)
+ if (!t) {
t = pf_default_rule.timeout[PFTM_SRC_NODE];
+ }
s->src_node->expire = pf_time_second() + t;
}
}
VERIFY(s->nat_src_node->states > 0);
if (--s->nat_src_node->states <= 0) {
t = s->rule.ptr->timeout[PFTM_SRC_NODE];
- if (!t)
+ if (!t) {
t = pf_default_rule.timeout[PFTM_SRC_NODE];
+ }
s->nat_src_node->expire = pf_time_second() + t;
}
}
void
pf_unlink_state(struct pf_state *cur)
{
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
if (cur->src.state == PF_TCPS_PROXY_DST) {
- pf_send_tcp(cur->rule.ptr, cur->state_key->af,
- &cur->state_key->ext.addr, &cur->state_key->lan.addr,
- cur->state_key->ext.xport.port,
+ pf_send_tcp(cur->rule.ptr, cur->state_key->af_lan,
+ &cur->state_key->ext_lan.addr, &cur->state_key->lan.addr,
+ cur->state_key->ext_lan.xport.port,
cur->state_key->lan.xport.port,
cur->src.seqhi, cur->src.seqlo + 1,
- TH_RST|TH_ACK, 0, 0, 0, 1, cur->tag, NULL, NULL);
+ TH_RST | TH_ACK, 0, 0, 0, 1, cur->tag, NULL, NULL);
}
- hook_runloop(&cur->unlink_hooks, HOOK_REMOVE|HOOK_FREE);
+ hook_runloop(&cur->unlink_hooks, HOOK_REMOVE | HOOK_FREE);
RB_REMOVE(pf_state_tree_id, &tree_id, cur);
#if NPFSYNC
- if (cur->creatorid == pf_status.hostid)
+ if (cur->creatorid == pf_status.hostid) {
pfsync_delete_state(cur);
+ }
#endif
cur->timeout = PFTM_UNLINKED;
pf_src_tree_remove_state(cur);
void
pf_free_state(struct pf_state *cur)
{
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
#if NPFSYNC
if (pfsyncif != NULL &&
(pfsyncif->sc_bulk_send_next == cur ||
- pfsyncif->sc_bulk_terminator == cur))
+ pfsyncif->sc_bulk_terminator == cur)) {
return;
+ }
#endif
VERIFY(cur->timeout == PFTM_UNLINKED);
VERIFY(cur->rule.ptr->states > 0);
if (--cur->rule.ptr->states <= 0 &&
- cur->rule.ptr->src_nodes <= 0)
+ cur->rule.ptr->src_nodes <= 0) {
pf_rm_rule(NULL, cur->rule.ptr);
+ }
if (cur->nat_rule.ptr != NULL) {
VERIFY(cur->nat_rule.ptr->states > 0);
if (--cur->nat_rule.ptr->states <= 0 &&
- cur->nat_rule.ptr->src_nodes <= 0)
+ cur->nat_rule.ptr->src_nodes <= 0) {
pf_rm_rule(NULL, cur->nat_rule.ptr);
+ }
}
if (cur->anchor.ptr != NULL) {
VERIFY(cur->anchor.ptr->states > 0);
- if (--cur->anchor.ptr->states <= 0)
+ if (--cur->anchor.ptr->states <= 0) {
pf_rm_rule(NULL, cur->anchor.ptr);
+ }
}
pf_normalize_tcp_cleanup(cur);
pfi_kif_unref(cur->kif, PFI_KIF_REF_STATE);
TAILQ_REMOVE(&state_list, cur, entry_list);
- if (cur->tag)
+ if (cur->tag) {
pf_tag_unref(cur->tag);
+ }
pool_put(&pf_state_pl, cur);
pf_status.fcounters[FCNT_STATE_REMOVALS]++;
VERIFY(pf_status.states > 0);
void
pf_purge_expired_states(u_int32_t maxcheck)
{
- static struct pf_state *cur = NULL;
- struct pf_state *next;
+ static struct pf_state *cur = NULL;
+ struct pf_state *next;
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
while (maxcheck--) {
/* wrap to start of list when we hit the end */
if (cur == NULL) {
cur = TAILQ_FIRST(&state_list);
- if (cur == NULL)
- break; /* list empty */
+ if (cur == NULL) {
+ break; /* list empty */
+ }
}
/* get next state, as cur may get deleted */
int
pf_tbladdr_setup(struct pf_ruleset *rs, struct pf_addr_wrap *aw)
{
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
- if (aw->type != PF_ADDR_TABLE)
- return (0);
- if ((aw->p.tbl = pfr_attach_table(rs, aw->v.tblname)) == NULL)
- return (1);
- return (0);
+ if (aw->type != PF_ADDR_TABLE) {
+ return 0;
+ }
+ if ((aw->p.tbl = pfr_attach_table(rs, aw->v.tblname)) == NULL) {
+ return 1;
+ }
+ return 0;
}
void
pf_tbladdr_remove(struct pf_addr_wrap *aw)
{
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
- if (aw->type != PF_ADDR_TABLE || aw->p.tbl == NULL)
+ if (aw->type != PF_ADDR_TABLE || aw->p.tbl == NULL) {
return;
+ }
pfr_detach_table(aw->p.tbl);
aw->p.tbl = NULL;
}
{
struct pfr_ktable *kt = aw->p.tbl;
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
- if (aw->type != PF_ADDR_TABLE || kt == NULL)
+ if (aw->type != PF_ADDR_TABLE || kt == NULL) {
return;
- if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL)
+ }
+ if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL) {
kt = kt->pfrkt_root;
+ }
aw->p.tbl = NULL;
aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ?
kt->pfrkt_cnt : -1;
#if INET
case AF_INET: {
u_int32_t a = ntohl(addr->addr32[0]);
- printf("%u.%u.%u.%u", (a>>24)&255, (a>>16)&255,
- (a>>8)&255, a&255);
+ printf("%u.%u.%u.%u", (a >> 24) & 255, (a >> 16) & 255,
+ (a >> 8) & 255, a & 255);
break;
}
#endif /* INET */
maxstart = 0, maxend = 0;
for (i = 0; i < 8; i++) {
if (!addr->addr16[i]) {
- if (curstart == 255)
+ if (curstart == 255) {
curstart = i;
- else
+ } else {
curend = i;
+ }
} else {
if (curstart) {
if ((curend - curstart) >
for (i = 0; i < 8; i++) {
if (i >= maxstart && i <= maxend) {
if (maxend != 7) {
- if (i == maxstart)
+ if (i == maxstart) {
printf(":");
+ }
} else {
- if (i == maxend)
+ if (i == maxend) {
printf(":");
+ }
}
} else {
b = ntohs(addr->addr16[i]);
printf("%x", b);
- if (i < 7)
+ if (i < 7) {
printf(":");
+ }
}
}
break;
static void
pf_print_sk_host(struct pf_state_host *sh, sa_family_t af, int proto,
- u_int8_t proto_variant)
+ u_int8_t proto_variant)
{
pf_print_addr(&sh->addr, af);
switch (proto) {
case IPPROTO_ESP:
- if (sh->xport.spi)
+ if (sh->xport.spi) {
printf("[%08x]", ntohl(sh->xport.spi));
+ }
break;
case IPPROTO_GRE:
- if (proto_variant == PF_GRE_PPTP_VARIANT)
+ if (proto_variant == PF_GRE_PPTP_VARIANT) {
printf("[%u]", ntohs(sh->xport.call_id));
+ }
break;
case IPPROTO_TCP:
pf_print_host(struct pf_addr *addr, u_int16_t p, sa_family_t af)
{
pf_print_addr(addr, af);
- if (p)
+ if (p) {
printf("[%u]", ntohs(p));
+ }
}
void
printf("%u ", sk->proto);
break;
}
- pf_print_sk_host(&sk->lan, sk->af, sk->proto, sk->proto_variant);
+ pf_print_sk_host(&sk->lan, sk->af_lan, sk->proto, sk->proto_variant);
+ printf(" ");
+ pf_print_sk_host(&sk->gwy, sk->af_gwy, sk->proto, sk->proto_variant);
printf(" ");
- pf_print_sk_host(&sk->gwy, sk->af, sk->proto, sk->proto_variant);
+ pf_print_sk_host(&sk->ext_lan, sk->af_lan, sk->proto,
+ sk->proto_variant);
printf(" ");
- pf_print_sk_host(&sk->ext, sk->af, sk->proto, sk->proto_variant);
+ pf_print_sk_host(&sk->ext_gwy, sk->af_gwy, sk->proto,
+ sk->proto_variant);
printf(" [lo=%u high=%u win=%u modulator=%u", s->src.seqlo,
s->src.seqhi, s->src.max_win, s->src.seqdiff);
- if (s->src.wscale && s->dst.wscale)
+ if (s->src.wscale && s->dst.wscale) {
printf(" wscale=%u", s->src.wscale & PF_WSCALE_MASK);
+ }
printf("]");
printf(" [lo=%u high=%u win=%u modulator=%u", s->dst.seqlo,
s->dst.seqhi, s->dst.max_win, s->dst.seqdiff);
- if (s->src.wscale && s->dst.wscale)
+ if (s->src.wscale && s->dst.wscale) {
printf(" wscale=%u", s->dst.wscale & PF_WSCALE_MASK);
+ }
printf("]");
printf(" %u:%u", s->src.state, s->dst.state);
}
void
pf_print_flags(u_int8_t f)
{
- if (f)
+ if (f) {
printf(" ");
- if (f & TH_FIN)
+ }
+ if (f & TH_FIN) {
printf("F");
- if (f & TH_SYN)
+ }
+ if (f & TH_SYN) {
printf("S");
- if (f & TH_RST)
+ }
+ if (f & TH_RST) {
printf("R");
- if (f & TH_PUSH)
+ }
+ if (f & TH_PUSH) {
printf("P");
- if (f & TH_ACK)
+ }
+ if (f & TH_ACK) {
printf("A");
- if (f & TH_URG)
+ }
+ if (f & TH_URG) {
printf("U");
- if (f & TH_ECE)
+ }
+ if (f & TH_ECE) {
printf("E");
- if (f & TH_CWR)
+ }
+ if (f & TH_CWR) {
printf("W");
+ }
}
-#define PF_SET_SKIP_STEPS(i) \
- do { \
- while (head[i] != cur) { \
- head[i]->skip[i].ptr = cur; \
- head[i] = TAILQ_NEXT(head[i], entries); \
- } \
+#define PF_SET_SKIP_STEPS(i) \
+ do { \
+ while (head[i] != cur) { \
+ head[i]->skip[i].ptr = cur; \
+ head[i] = TAILQ_NEXT(head[i], entries); \
+ } \
} while (0)
void
cur = TAILQ_FIRST(rules);
prev = cur;
- for (i = 0; i < PF_SKIP_COUNT; ++i)
+ for (i = 0; i < PF_SKIP_COUNT; ++i) {
head[i] = cur;
+ }
while (cur != NULL) {
-
- if (cur->kif != prev->kif || cur->ifnot != prev->ifnot)
+ if (cur->kif != prev->kif || cur->ifnot != prev->ifnot) {
PF_SET_SKIP_STEPS(PF_SKIP_IFP);
- if (cur->direction != prev->direction)
+ }
+ if (cur->direction != prev->direction) {
PF_SET_SKIP_STEPS(PF_SKIP_DIR);
- if (cur->af != prev->af)
+ }
+ if (cur->af != prev->af) {
PF_SET_SKIP_STEPS(PF_SKIP_AF);
- if (cur->proto != prev->proto)
+ }
+ if (cur->proto != prev->proto) {
PF_SET_SKIP_STEPS(PF_SKIP_PROTO);
+ }
if (cur->src.neg != prev->src.neg ||
- pf_addr_wrap_neq(&cur->src.addr, &prev->src.addr))
+ pf_addr_wrap_neq(&cur->src.addr, &prev->src.addr)) {
PF_SET_SKIP_STEPS(PF_SKIP_SRC_ADDR);
+ }
{
union pf_rule_xport *cx = &cur->src.xport;
union pf_rule_xport *px = &prev->src.xport;
prev->proto == IPPROTO_ESP ||
cx->range.op != px->range.op ||
cx->range.port[0] != px->range.port[0] ||
- cx->range.port[1] != px->range.port[1])
+ cx->range.port[1] != px->range.port[1]) {
PF_SET_SKIP_STEPS(PF_SKIP_SRC_PORT);
+ }
break;
}
}
if (cur->dst.neg != prev->dst.neg ||
- pf_addr_wrap_neq(&cur->dst.addr, &prev->dst.addr))
+ pf_addr_wrap_neq(&cur->dst.addr, &prev->dst.addr)) {
PF_SET_SKIP_STEPS(PF_SKIP_DST_ADDR);
+ }
{
union pf_rule_xport *cx = &cur->dst.xport;
union pf_rule_xport *px = &prev->dst.xport;
switch (cur->proto) {
case IPPROTO_GRE:
if (cur->proto != prev->proto ||
- cx->call_id != px->call_id)
+ cx->call_id != px->call_id) {
PF_SET_SKIP_STEPS(PF_SKIP_DST_PORT);
+ }
break;
case IPPROTO_ESP:
if (cur->proto != prev->proto ||
- cx->spi != px->spi)
+ cx->spi != px->spi) {
PF_SET_SKIP_STEPS(PF_SKIP_DST_PORT);
+ }
break;
default:
if (prev->proto == IPPROTO_GRE ||
prev->proto == IPPROTO_ESP ||
cx->range.op != px->range.op ||
cx->range.port[0] != px->range.port[0] ||
- cx->range.port[1] != px->range.port[1])
+ cx->range.port[1] != px->range.port[1]) {
PF_SET_SKIP_STEPS(PF_SKIP_DST_PORT);
+ }
break;
}
}
prev = cur;
cur = TAILQ_NEXT(cur, entries);
}
- for (i = 0; i < PF_SKIP_COUNT; ++i)
+ for (i = 0; i < PF_SKIP_COUNT; ++i) {
PF_SET_SKIP_STEPS(i);
+ }
}
u_int32_t
struct pf_flowhash_key fh __attribute__((aligned(8)));
uint32_t flowhash = 0;
- bzero(&fh, sizeof (fh));
- if (PF_ALEQ(&sk->lan.addr, &sk->ext.addr, sk->af)) {
- bcopy(&sk->lan.addr, &fh.ap1.addr, sizeof (fh.ap1.addr));
- bcopy(&sk->ext.addr, &fh.ap2.addr, sizeof (fh.ap2.addr));
+ bzero(&fh, sizeof(fh));
+ if (PF_ALEQ(&sk->lan.addr, &sk->ext_lan.addr, sk->af_lan)) {
+ bcopy(&sk->lan.addr, &fh.ap1.addr, sizeof(fh.ap1.addr));
+ bcopy(&sk->ext_lan.addr, &fh.ap2.addr, sizeof(fh.ap2.addr));
} else {
- bcopy(&sk->ext.addr, &fh.ap1.addr, sizeof (fh.ap1.addr));
- bcopy(&sk->lan.addr, &fh.ap2.addr, sizeof (fh.ap2.addr));
+ bcopy(&sk->ext_lan.addr, &fh.ap1.addr, sizeof(fh.ap1.addr));
+ bcopy(&sk->lan.addr, &fh.ap2.addr, sizeof(fh.ap2.addr));
}
- if (sk->lan.xport.spi <= sk->ext.xport.spi) {
+ if (sk->lan.xport.spi <= sk->ext_lan.xport.spi) {
fh.ap1.xport.spi = sk->lan.xport.spi;
- fh.ap2.xport.spi = sk->ext.xport.spi;
+ fh.ap2.xport.spi = sk->ext_lan.xport.spi;
} else {
- fh.ap1.xport.spi = sk->ext.xport.spi;
+ fh.ap1.xport.spi = sk->ext_lan.xport.spi;
fh.ap2.xport.spi = sk->lan.xport.spi;
}
- fh.af = sk->af;
+ fh.af = sk->af_lan;
fh.proto = sk->proto;
try_again:
- flowhash = net_flowhash(&fh, sizeof (fh), pf_hash_seed);
+ flowhash = net_flowhash(&fh, sizeof(fh), pf_hash_seed);
if (flowhash == 0) {
/* try to get a non-zero flowhash */
pf_hash_seed = RandomULong();
goto try_again;
}
- return (flowhash);
+ return flowhash;
}
static int
pf_addr_wrap_neq(struct pf_addr_wrap *aw1, struct pf_addr_wrap *aw2)
{
- if (aw1->type != aw2->type)
- return (1);
+ if (aw1->type != aw2->type) {
+ return 1;
+ }
switch (aw1->type) {
case PF_ADDR_ADDRMASK:
case PF_ADDR_RANGE:
- if (PF_ANEQ(&aw1->v.a.addr, &aw2->v.a.addr, 0))
- return (1);
- if (PF_ANEQ(&aw1->v.a.mask, &aw2->v.a.mask, 0))
- return (1);
- return (0);
+ if (PF_ANEQ(&aw1->v.a.addr, &aw2->v.a.addr, 0)) {
+ return 1;
+ }
+ if (PF_ANEQ(&aw1->v.a.mask, &aw2->v.a.mask, 0)) {
+ return 1;
+ }
+ return 0;
case PF_ADDR_DYNIFTL:
- return (aw1->p.dyn == NULL || aw2->p.dyn == NULL ||
- aw1->p.dyn->pfid_kt != aw2->p.dyn->pfid_kt);
+ return aw1->p.dyn == NULL || aw2->p.dyn == NULL ||
+ aw1->p.dyn->pfid_kt != aw2->p.dyn->pfid_kt;
case PF_ADDR_NOROUTE:
case PF_ADDR_URPFFAILED:
- return (0);
+ return 0;
case PF_ADDR_TABLE:
- return (aw1->p.tbl != aw2->p.tbl);
+ return aw1->p.tbl != aw2->p.tbl;
case PF_ADDR_RTLABEL:
- return (aw1->v.rtlabel != aw2->v.rtlabel);
+ return aw1->v.rtlabel != aw2->v.rtlabel;
default:
printf("invalid address type: %d\n", aw1->type);
- return (1);
+ return 1;
}
}
u_int16_t
pf_cksum_fixup(u_int16_t cksum, u_int16_t old, u_int16_t new, u_int8_t udp)
{
- u_int32_t l;
-
- if (udp && !cksum)
- return (0);
- l = cksum + old - new;
- l = (l >> 16) + (l & 0xffff);
- l = l & 0xffff;
- if (udp && !l)
- return (0xffff);
- return (l);
+ return nat464_cksum_fixup(cksum, old, new, udp);
}
+/*
+ * change ip address & port
+ * dir : packet direction
+ * a : address to be changed
+ * p : port to be changed
+ * ic : ip header checksum
+ * pc : protocol checksum
+ * an : new ip address
+ * pn : new port
+ * u : should be 1 if UDP packet else 0
+ * af : address family of the packet
+ * afn : address family of the new address
+ * ua : should be 1 if ip address needs to be updated in the packet else
+ * only the checksum is recalculated & updated.
+ */
static void
-pf_change_ap(int dir, struct mbuf *m, struct pf_addr *a, u_int16_t *p,
+pf_change_ap(int dir, pbuf_t *pbuf, struct pf_addr *a, u_int16_t *p,
u_int16_t *ic, u_int16_t *pc, struct pf_addr *an, u_int16_t pn,
- u_int8_t u, sa_family_t af)
+ u_int8_t u, sa_family_t af, sa_family_t afn, int ua)
{
- struct pf_addr ao;
- u_int16_t po = *p;
+ struct pf_addr ao;
+ u_int16_t po = *p;
PF_ACPY(&ao, a, af);
- PF_ACPY(a, an, af);
+ if (ua) {
+ PF_ACPY(a, an, afn);
+ }
*p = pn;
switch (af) {
#if INET
case AF_INET:
- *ic = pf_cksum_fixup(pf_cksum_fixup(*ic,
- ao.addr16[0], an->addr16[0], 0),
- ao.addr16[1], an->addr16[1], 0);
- *p = pn;
- /*
- * If the packet is originated from an ALG on the NAT gateway
- * (source address is loopback or local), in which case the
- * TCP/UDP checksum field contains the pseudo header checksum
- * that's not yet complemented.
- */
- if (dir == PF_OUT && m != NULL &&
- (m->m_flags & M_PKTHDR) &&
- (m->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))) {
- /* Pseudo-header checksum does not include ports */
- *pc = ~pf_cksum_fixup(pf_cksum_fixup(~*pc,
- ao.addr16[0], an->addr16[0], u),
- ao.addr16[1], an->addr16[1], u);
- } else {
- *pc = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(*pc,
- ao.addr16[0], an->addr16[0], u),
- ao.addr16[1], an->addr16[1], u),
+ switch (afn) {
+ case AF_INET:
+ *ic = pf_cksum_fixup(pf_cksum_fixup(*ic,
+ ao.addr16[0], an->addr16[0], 0),
+ ao.addr16[1], an->addr16[1], 0);
+ *p = pn;
+ /*
+ * If the packet is originated from an ALG on the NAT gateway
+ * (source address is loopback or local), in which case the
+ * TCP/UDP checksum field contains the pseudo header checksum
+ * that's not yet complemented.
+ * In that case we do not need to fixup the checksum for port
+ * translation as the pseudo header checksum doesn't include ports.
+ *
+ * A packet generated locally will have UDP/TCP CSUM flag
+ * set (gets set in protocol output).
+ *
+ * It should be noted that the fixup doesn't do anything if the
+ * checksum is 0.
+ */
+ if (dir == PF_OUT && pbuf != NULL &&
+ (*pbuf->pb_csum_flags & (CSUM_TCP | CSUM_UDP))) {
+ /* Pseudo-header checksum does not include ports */
+ *pc = ~pf_cksum_fixup(pf_cksum_fixup(~*pc,
+ ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u);
+ } else {
+ *pc =
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ *pc, ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u),
+ po, pn, u);
+ }
+ break;
+#ifdef INET6
+ case AF_INET6:
+ *p = pn;
+ *pc = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(*pc,
+ ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u),
+ 0, an->addr16[2], u),
+ 0, an->addr16[3], u),
+ 0, an->addr16[4], u),
+ 0, an->addr16[5], u),
+ 0, an->addr16[6], u),
+ 0, an->addr16[7], u),
po, pn, u);
+ break;
+#endif /* INET6 */
}
break;
#endif /* INET */
#if INET6
case AF_INET6:
- /*
- * If the packet is originated from an ALG on the NAT gateway
- * (source address is loopback or local), in which case the
- * TCP/UDP checksum field contains the pseudo header checksum
- * that's not yet complemented.
- */
- if (dir == PF_OUT && m != NULL &&
- (m->m_flags & M_PKTHDR) &&
- (m->m_pkthdr.csum_flags & (CSUM_TCPIPV6 | CSUM_UDPIPV6))) {
- /* Pseudo-header checksum does not include ports */
- *pc = ~pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(~*pc,
- ao.addr16[0], an->addr16[0], u),
- ao.addr16[1], an->addr16[1], u),
- ao.addr16[2], an->addr16[2], u),
- ao.addr16[3], an->addr16[3], u),
- ao.addr16[4], an->addr16[4], u),
- ao.addr16[5], an->addr16[5], u),
- ao.addr16[6], an->addr16[6], u),
- ao.addr16[7], an->addr16[7], u),
- po, pn, u);
- } else {
+ switch (afn) {
+ case AF_INET6:
+ /*
+ * If the packet is originated from an ALG on the NAT gateway
+ * (source address is loopback or local), in which case the
+ * TCP/UDP checksum field contains the pseudo header checksum
+ * that's not yet complemented.
+ * A packet generated locally
+ * will have UDP/TCP CSUM flag set (gets set in protocol
+ * output).
+ */
+ if (dir == PF_OUT && pbuf != NULL &&
+ (*pbuf->pb_csum_flags & (CSUM_TCPIPV6 |
+ CSUM_UDPIPV6))) {
+ /* Pseudo-header checksum does not include ports */
+ *pc =
+ ~pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ ~*pc,
+ ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u),
+ ao.addr16[2], an->addr16[2], u),
+ ao.addr16[3], an->addr16[3], u),
+ ao.addr16[4], an->addr16[4], u),
+ ao.addr16[5], an->addr16[5], u),
+ ao.addr16[6], an->addr16[6], u),
+ ao.addr16[7], an->addr16[7], u);
+ } else {
+ *pc =
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ *pc,
+ ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u),
+ ao.addr16[2], an->addr16[2], u),
+ ao.addr16[3], an->addr16[3], u),
+ ao.addr16[4], an->addr16[4], u),
+ ao.addr16[5], an->addr16[5], u),
+ ao.addr16[6], an->addr16[6], u),
+ ao.addr16[7], an->addr16[7], u),
+ po, pn, u);
+ }
+ break;
+#ifdef INET
+ case AF_INET:
*pc = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(*pc,
- ao.addr16[0], an->addr16[0], u),
- ao.addr16[1], an->addr16[1], u),
- ao.addr16[2], an->addr16[2], u),
- ao.addr16[3], an->addr16[3], u),
- ao.addr16[4], an->addr16[4], u),
- ao.addr16[5], an->addr16[5], u),
- ao.addr16[6], an->addr16[6], u),
- ao.addr16[7], an->addr16[7], u),
- po, pn, u);
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(*pc,
+ ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u),
+ ao.addr16[2], 0, u),
+ ao.addr16[3], 0, u),
+ ao.addr16[4], 0, u),
+ ao.addr16[5], 0, u),
+ ao.addr16[6], 0, u),
+ ao.addr16[7], 0, u),
+ po, pn, u);
+ break;
+#endif /* INET */
}
break;
#endif /* INET6 */
void
pf_change_a(void *a, u_int16_t *c, u_int32_t an, u_int8_t u)
{
- u_int32_t ao;
+ u_int32_t ao;
- memcpy(&ao, a, sizeof (ao));
- memcpy(a, &an, sizeof (u_int32_t));
+ memcpy(&ao, a, sizeof(ao));
+ memcpy(a, &an, sizeof(u_int32_t));
*c = pf_cksum_fixup(pf_cksum_fixup(*c, ao / 65536, an / 65536, u),
ao % 65536, an % 65536, u);
}
static void
pf_change_a6(struct pf_addr *a, u_int16_t *c, struct pf_addr *an, u_int8_t u)
{
- struct pf_addr ao;
+ struct pf_addr ao;
PF_ACPY(&ao, a, AF_INET6);
PF_ACPY(a, an, AF_INET6);
*c = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(*c,
- ao.addr16[0], an->addr16[0], u),
- ao.addr16[1], an->addr16[1], u),
- ao.addr16[2], an->addr16[2], u),
- ao.addr16[3], an->addr16[3], u),
- ao.addr16[4], an->addr16[4], u),
- ao.addr16[5], an->addr16[5], u),
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(*c,
+ ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u),
+ ao.addr16[2], an->addr16[2], u),
+ ao.addr16[3], an->addr16[3], u),
+ ao.addr16[4], an->addr16[4], u),
+ ao.addr16[5], an->addr16[5], u),
ao.addr16[6], an->addr16[6], u),
ao.addr16[7], an->addr16[7], u);
}
+
+void
+pf_change_addr(struct pf_addr *a, u_int16_t *c, struct pf_addr *an, u_int8_t u,
+ sa_family_t af, sa_family_t afn)
+{
+ struct pf_addr ao;
+
+ PF_ACPY(&ao, a, af);
+ PF_ACPY(a, an, afn);
+
+ switch (af) {
+ case AF_INET:
+ switch (afn) {
+ case AF_INET:
+ pf_change_a(a, c, an->v4addr.s_addr, u);
+ break;
+ case AF_INET6:
+ *c = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(*c,
+ ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u),
+ 0, an->addr16[2], u),
+ 0, an->addr16[3], u),
+ 0, an->addr16[4], u),
+ 0, an->addr16[5], u),
+ 0, an->addr16[6], u),
+ 0, an->addr16[7], u);
+ break;
+ }
+ break;
+ case AF_INET6:
+ switch (afn) {
+ case AF_INET:
+ *c = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(*c,
+ ao.addr16[0], an->addr16[0], u),
+ ao.addr16[1], an->addr16[1], u),
+ ao.addr16[2], 0, u),
+ ao.addr16[3], 0, u),
+ ao.addr16[4], 0, u),
+ ao.addr16[5], 0, u),
+ ao.addr16[6], 0, u),
+ ao.addr16[7], 0, u);
+ break;
+ case AF_INET6:
+ pf_change_a6(a, c, an, u);
+ break;
+ }
+ break;
+ }
+}
+
#endif /* INET6 */
static void
struct pf_addr *na, u_int16_t np, u_int16_t *pc, u_int16_t *h2c,
u_int16_t *ic, u_int16_t *hc, u_int8_t u, sa_family_t af)
{
- struct pf_addr oia, ooa;
+ struct pf_addr oia, ooa;
PF_ACPY(&oia, ia, af);
PF_ACPY(&ooa, oa, af);
/* Change inner protocol port, fix inner protocol checksum. */
if (ip != NULL) {
- u_int16_t oip = *ip;
- u_int32_t opc = 0;
+ u_int16_t oip = *ip;
+ u_int32_t opc = 0;
- if (pc != NULL)
+ if (pc != NULL) {
opc = *pc;
+ }
*ip = np;
- if (pc != NULL)
+ if (pc != NULL) {
*pc = pf_cksum_fixup(*pc, oip, *ip, u);
+ }
*ic = pf_cksum_fixup(*ic, oip, *ip, 0);
- if (pc != NULL)
+ if (pc != NULL) {
*ic = pf_cksum_fixup(*ic, opc, *pc, 0);
+ }
}
/* Change inner ip address, fix inner ip and icmp checksums. */
PF_ACPY(ia, na, af);
switch (af) {
#if INET
case AF_INET: {
- u_int32_t oh2c = *h2c;
+ u_int32_t oh2c = *h2c;
*h2c = pf_cksum_fixup(pf_cksum_fixup(*h2c,
oia.addr16[0], ia->addr16[0], 0),
#if INET6
case AF_INET6:
*ic = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(*ic,
- oia.addr16[0], ia->addr16[0], u),
- oia.addr16[1], ia->addr16[1], u),
- oia.addr16[2], ia->addr16[2], u),
- oia.addr16[3], ia->addr16[3], u),
- oia.addr16[4], ia->addr16[4], u),
- oia.addr16[5], ia->addr16[5], u),
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(*ic,
+ oia.addr16[0], ia->addr16[0], u),
+ oia.addr16[1], ia->addr16[1], u),
+ oia.addr16[2], ia->addr16[2], u),
+ oia.addr16[3], ia->addr16[3], u),
+ oia.addr16[4], ia->addr16[4], u),
+ oia.addr16[5], ia->addr16[5], u),
oia.addr16[6], ia->addr16[6], u),
oia.addr16[7], ia->addr16[7], u);
break;
#if INET6
case AF_INET6:
*ic = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
- pf_cksum_fixup(pf_cksum_fixup(*ic,
- ooa.addr16[0], oa->addr16[0], u),
- ooa.addr16[1], oa->addr16[1], u),
- ooa.addr16[2], oa->addr16[2], u),
- ooa.addr16[3], oa->addr16[3], u),
- ooa.addr16[4], oa->addr16[4], u),
- ooa.addr16[5], oa->addr16[5], u),
+ pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+ pf_cksum_fixup(pf_cksum_fixup(*ic,
+ ooa.addr16[0], oa->addr16[0], u),
+ ooa.addr16[1], oa->addr16[1], u),
+ ooa.addr16[2], oa->addr16[2], u),
+ ooa.addr16[3], oa->addr16[3], u),
+ ooa.addr16[4], oa->addr16[4], u),
+ ooa.addr16[5], oa->addr16[5], u),
ooa.addr16[6], oa->addr16[6], u),
ooa.addr16[7], oa->addr16[7], u);
break;
* (credits to Krzysztof Pfaff for report and patch)
*/
static int
-pf_modulate_sack(struct mbuf *m, int off, struct pf_pdesc *pd,
+pf_modulate_sack(pbuf_t *pbuf, int off, struct pf_pdesc *pd,
struct tcphdr *th, struct pf_state_peer *dst)
{
- int hlen = (th->th_off << 2) - sizeof (*th), thoptlen = hlen;
+ int hlen = (th->th_off << 2) - sizeof(*th), thoptlen = hlen;
u_int8_t opts[MAX_TCPOPTLEN], *opt = opts;
int copyback = 0, i, olen;
struct sackblk sack;
-#define TCPOLEN_SACKLEN (TCPOLEN_SACK + 2)
+#define TCPOLEN_SACKLEN (TCPOLEN_SACK + 2)
if (hlen < TCPOLEN_SACKLEN ||
- !pf_pull_hdr(m, off + sizeof (*th), opts, hlen, NULL, NULL, pd->af))
- return (0);
+ !pf_pull_hdr(pbuf, off + sizeof(*th), opts, hlen, NULL, NULL, pd->af)) {
+ return 0;
+ }
while (hlen >= TCPOLEN_SACKLEN) {
olen = opt[1];
switch (*opt) {
- case TCPOPT_EOL: /* FALLTHROUGH */
+ case TCPOPT_EOL: /* FALLTHROUGH */
case TCPOPT_NOP:
opt++;
hlen--;
break;
case TCPOPT_SACK:
- if (olen > hlen)
+ if (olen > hlen) {
olen = hlen;
+ }
if (olen >= TCPOLEN_SACKLEN) {
for (i = 2; i + TCPOLEN_SACK <= olen;
i += TCPOLEN_SACK) {
- memcpy(&sack, &opt[i], sizeof (sack));
+ memcpy(&sack, &opt[i], sizeof(sack));
pf_change_a(&sack.start, &th->th_sum,
htonl(ntohl(sack.start) -
dst->seqdiff), 0);
pf_change_a(&sack.end, &th->th_sum,
htonl(ntohl(sack.end) -
dst->seqdiff), 0);
- memcpy(&opt[i], &sack, sizeof (sack));
+ memcpy(&opt[i], &sack, sizeof(sack));
}
- copyback = off + sizeof (*th) + thoptlen;
+ copyback = off + sizeof(*th) + thoptlen;
}
- /* FALLTHROUGH */
+ /* FALLTHROUGH */
default:
- if (olen < 2)
+ if (olen < 2) {
olen = 2;
+ }
hlen -= olen;
opt += olen;
}
}
if (copyback) {
- m = pf_lazy_makewritable(pd, m, copyback);
- if (!m)
- return (-1);
- m_copyback(m, off + sizeof (*th), thoptlen, opts);
+ if (pf_lazy_makewritable(pd, pbuf, copyback) == NULL) {
+ return -1;
+ }
+ pbuf_copy_back(pbuf, off + sizeof(*th), thoptlen, opts);
}
- return (copyback);
+ return copyback;
}
+/*
+ * XXX
+ *
+ * The following functions (pf_send_tcp and pf_send_icmp) are somewhat
+ * special in that they originate "spurious" packets rather than
+ * filter/NAT existing packets. As such, they're not a great fit for
+ * the 'pbuf' shim, which assumes the underlying packet buffers are
+ * allocated elsewhere.
+ *
+ * Since these functions are rarely used, we'll carry on allocating mbufs
+ * and passing them to the IP stack for eventual routing.
+ */
static void
pf_send_tcp(const struct pf_rule *r, sa_family_t af,
const struct pf_addr *saddr, const struct pf_addr *daddr,
u_int16_t rtag, struct ether_header *eh, struct ifnet *ifp)
{
#pragma unused(eh, ifp)
- struct mbuf *m;
- int len, tlen;
+ struct mbuf *m;
+ int len, tlen;
#if INET
- struct ip *h = NULL;
+ struct ip *h = NULL;
#endif /* INET */
#if INET6
- struct ip6_hdr *h6 = NULL;
+ struct ip6_hdr *h6 = NULL;
#endif /* INET6 */
- struct tcphdr *th = NULL;
- char *opt;
- struct pf_mtag *pf_mtag;
+ struct tcphdr *th = NULL;
+ char *opt;
+ struct pf_mtag *pf_mtag;
/* maximum segment size tcp option */
- tlen = sizeof (struct tcphdr);
- if (mss)
+ tlen = sizeof(struct tcphdr);
+ if (mss) {
tlen += 4;
+ }
switch (af) {
#if INET
case AF_INET:
- len = sizeof (struct ip) + tlen;
+ len = sizeof(struct ip) + tlen;
break;
#endif /* INET */
#if INET6
case AF_INET6:
- len = sizeof (struct ip6_hdr) + tlen;
+ len = sizeof(struct ip6_hdr) + tlen;
break;
#endif /* INET6 */
default:
/* create outgoing mbuf */
m = m_gethdr(M_DONTWAIT, MT_HEADER);
- if (m == NULL)
+ if (m == NULL) {
return;
+ }
if ((pf_mtag = pf_get_mtag(m)) == NULL) {
- m_free(m);
return;
}
- if (tag)
+ if (tag) {
pf_mtag->pftag_flags |= PF_TAG_GENERATED;
+ }
pf_mtag->pftag_tag = rtag;
- if (r != NULL && PF_RTABLEID_IS_VALID(r->rtableid))
+ if (r != NULL && PF_RTABLEID_IS_VALID(r->rtableid)) {
pf_mtag->pftag_rtableid = r->rtableid;
-
-#if PF_ALTQ
- if (altq_allowed && r != NULL && r->qid)
- pf_mtag->pftag_qid = r->qid;
-#endif /* PF_ALTQ */
+ }
#if PF_ECN
/* add hints for ecn */
/* IP header fields included in the TCP checksum */
h->ip_p = IPPROTO_TCP;
h->ip_len = htons(tlen);
- h->ip_src.s_addr = saddr->v4.s_addr;
- h->ip_dst.s_addr = daddr->v4.s_addr;
+ h->ip_src.s_addr = saddr->v4addr.s_addr;
+ h->ip_dst.s_addr = daddr->v4addr.s_addr;
- th = (struct tcphdr *)(void *)((caddr_t)h + sizeof (struct ip));
+ th = (struct tcphdr *)(void *)((caddr_t)h + sizeof(struct ip));
break;
#endif /* INET */
#if INET6
/* IP header fields included in the TCP checksum */
h6->ip6_nxt = IPPROTO_TCP;
h6->ip6_plen = htons(tlen);
- memcpy(&h6->ip6_src, &saddr->v6, sizeof (struct in6_addr));
- memcpy(&h6->ip6_dst, &daddr->v6, sizeof (struct in6_addr));
+ memcpy(&h6->ip6_src, &saddr->v6addr, sizeof(struct in6_addr));
+ memcpy(&h6->ip6_dst, &daddr->v6addr, sizeof(struct in6_addr));
th = (struct tcphdr *)(void *)
- ((caddr_t)h6 + sizeof (struct ip6_hdr));
+ ((caddr_t)h6 + sizeof(struct ip6_hdr));
break;
#endif /* INET6 */
}
/* Finish the IP header */
h->ip_v = 4;
- h->ip_hl = sizeof (*h) >> 2;
+ h->ip_hl = sizeof(*h) >> 2;
h->ip_tos = IPTOS_LOWDELAY;
/*
* ip_output() expects ip_len and ip_off to be in host order.
h->ip_ttl = ttl ? ttl : ip_defttl;
h->ip_sum = 0;
- bzero(&ro, sizeof (ro));
+ bzero(&ro, sizeof(ro));
ip_output(m, NULL, &ro, 0, NULL, NULL);
ROUTE_RELEASE(&ro);
break;
/* TCP checksum */
th->th_sum = in6_cksum(m, IPPROTO_TCP,
- sizeof (struct ip6_hdr), tlen);
+ sizeof(struct ip6_hdr), tlen);
h6->ip6_vfc |= IPV6_VERSION;
h6->ip6_hlim = IPV6_DEFHLIM;
- bzero(&ro6, sizeof (ro6));
+ bzero(&ro6, sizeof(ro6));
ip6_output(m, NULL, &ro6, 0, NULL, NULL, NULL);
ROUTE_RELEASE(&ro6);
break;
}
static void
-pf_send_icmp(struct mbuf *m, u_int8_t type, u_int8_t code, sa_family_t af,
+pf_send_icmp(pbuf_t *pbuf, u_int8_t type, u_int8_t code, sa_family_t af,
struct pf_rule *r)
{
- struct mbuf *m0;
- struct pf_mtag *pf_mtag;
+ struct mbuf *m0;
+ struct pf_mtag *pf_mtag;
- m0 = m_copy(m, 0, M_COPYALL);
- if (m0 == NULL)
+ m0 = pbuf_clone_to_mbuf(pbuf);
+ if (m0 == NULL) {
return;
+ }
- if ((pf_mtag = pf_get_mtag(m0)) == NULL)
+ if ((pf_mtag = pf_get_mtag(m0)) == NULL) {
return;
+ }
pf_mtag->pftag_flags |= PF_TAG_GENERATED;
- if (PF_RTABLEID_IS_VALID(r->rtableid))
+ if (PF_RTABLEID_IS_VALID(r->rtableid)) {
pf_mtag->pftag_rtableid = r->rtableid;
-
-#if PF_ALTQ
- if (altq_allowed && r->qid)
- pf_mtag->pftag_qid = r->qid;
-#endif /* PF_ALTQ */
+ }
#if PF_ECN
/* add hints for ecn */
pf_match_addr(u_int8_t n, struct pf_addr *a, struct pf_addr *m,
struct pf_addr *b, sa_family_t af)
{
- int match = 0;
+ int match = 0;
switch (af) {
#if INET
case AF_INET:
if ((a->addr32[0] & m->addr32[0]) ==
- (b->addr32[0] & m->addr32[0]))
+ (b->addr32[0] & m->addr32[0])) {
match++;
+ }
break;
#endif /* INET */
#if INET6
case AF_INET6:
if (((a->addr32[0] & m->addr32[0]) ==
- (b->addr32[0] & m->addr32[0])) &&
+ (b->addr32[0] & m->addr32[0])) &&
((a->addr32[1] & m->addr32[1]) ==
- (b->addr32[1] & m->addr32[1])) &&
+ (b->addr32[1] & m->addr32[1])) &&
((a->addr32[2] & m->addr32[2]) ==
- (b->addr32[2] & m->addr32[2])) &&
+ (b->addr32[2] & m->addr32[2])) &&
((a->addr32[3] & m->addr32[3]) ==
- (b->addr32[3] & m->addr32[3])))
+ (b->addr32[3] & m->addr32[3]))) {
match++;
+ }
break;
#endif /* INET6 */
}
if (match) {
- if (n)
- return (0);
- else
- return (1);
+ if (n) {
+ return 0;
+ } else {
+ return 1;
+ }
} else {
- if (n)
- return (1);
- else
- return (0);
+ if (n) {
+ return 1;
+ } else {
+ return 0;
+ }
}
}
#if INET
case AF_INET:
if ((a->addr32[0] < b->addr32[0]) ||
- (a->addr32[0] > e->addr32[0]))
- return (0);
+ (a->addr32[0] > e->addr32[0])) {
+ return 0;
+ }
break;
#endif /* INET */
#if INET6
case AF_INET6: {
- int i;
+ int i;
/* check a >= b */
- for (i = 0; i < 4; ++i)
- if (a->addr32[i] > b->addr32[i])
+ for (i = 0; i < 4; ++i) {
+ if (a->addr32[i] > b->addr32[i]) {
break;
- else if (a->addr32[i] < b->addr32[i])
- return (0);
+ } else if (a->addr32[i] < b->addr32[i]) {
+ return 0;
+ }
+ }
/* check a <= e */
- for (i = 0; i < 4; ++i)
- if (a->addr32[i] < e->addr32[i])
+ for (i = 0; i < 4; ++i) {
+ if (a->addr32[i] < e->addr32[i]) {
break;
- else if (a->addr32[i] > e->addr32[i])
- return (0);
- break;
+ } else if (a->addr32[i] > e->addr32[i]) {
+ return 0;
+ }
+ }
+ break;
}
#endif /* INET6 */
}
- return (1);
+ return 1;
}
int
{
switch (op) {
case PF_OP_IRG:
- return ((p > a1) && (p < a2));
+ return (p > a1) && (p < a2);
case PF_OP_XRG:
- return ((p < a1) || (p > a2));
+ return (p < a1) || (p > a2);
case PF_OP_RRG:
- return ((p >= a1) && (p <= a2));
+ return (p >= a1) && (p <= a2);
case PF_OP_EQ:
- return (p == a1);
+ return p == a1;
case PF_OP_NE:
- return (p != a1);
+ return p != a1;
case PF_OP_LT:
- return (p < a1);
+ return p < a1;
case PF_OP_LE:
- return (p <= a1);
+ return p <= a1;
case PF_OP_GT:
- return (p > a1);
+ return p > a1;
case PF_OP_GE:
- return (p >= a1);
+ return p >= a1;
}
- return (0); /* never reached */
+ return 0; /* never reached */
}
int
NTOHS(a2);
NTOHS(p);
#endif
- return (pf_match(op, a1, a2, p));
+ return pf_match(op, a1, a2, p);
}
int
if (sx) {
switch (proto) {
case IPPROTO_GRE:
- if (proto_variant == PF_GRE_PPTP_VARIANT)
+ if (proto_variant == PF_GRE_PPTP_VARIANT) {
d = (rx->call_id == sx->call_id);
+ }
break;
case IPPROTO_ESP:
case IPPROTO_UDP:
case IPPROTO_ICMP:
case IPPROTO_ICMPV6:
- if (rx->range.op)
+ if (rx->range.op) {
d = pf_match_port(rx->range.op,
rx->range.port[0], rx->range.port[1],
sx->port);
+ }
break;
default:
}
}
- return (d);
+ return d;
}
int
pf_match_uid(u_int8_t op, uid_t a1, uid_t a2, uid_t u)
{
- if (u == UID_MAX && op != PF_OP_EQ && op != PF_OP_NE)
- return (0);
- return (pf_match(op, a1, a2, u));
+ if (u == UID_MAX && op != PF_OP_EQ && op != PF_OP_NE) {
+ return 0;
+ }
+ return pf_match(op, a1, a2, u);
}
int
pf_match_gid(u_int8_t op, gid_t a1, gid_t a2, gid_t g)
{
- if (g == GID_MAX && op != PF_OP_EQ && op != PF_OP_NE)
- return (0);
- return (pf_match(op, a1, a2, g));
+ if (g == GID_MAX && op != PF_OP_EQ && op != PF_OP_NE) {
+ return 0;
+ }
+ return pf_match(op, a1, a2, g);
}
static int
-pf_match_tag(struct mbuf *m, struct pf_rule *r, struct pf_mtag *pf_mtag,
+pf_match_tag(struct pf_rule *r, struct pf_mtag *pf_mtag,
int *tag)
{
-#pragma unused(m)
- if (*tag == -1)
+ if (*tag == -1) {
*tag = pf_mtag->pftag_tag;
+ }
- return ((!r->match_tag_not && r->match_tag == *tag) ||
- (r->match_tag_not && r->match_tag != *tag));
+ return (!r->match_tag_not && r->match_tag == *tag) ||
+ (r->match_tag_not && r->match_tag != *tag);
}
int
-pf_tag_packet(struct mbuf *m, struct pf_mtag *pf_mtag, int tag,
+pf_tag_packet(pbuf_t *pbuf, struct pf_mtag *pf_mtag, int tag,
unsigned int rtableid, struct pf_pdesc *pd)
{
if (tag <= 0 && !PF_RTABLEID_IS_VALID(rtableid) &&
- (pd == NULL || !(pd->pktflags & PKTF_FLOW_ID)))
- return (0);
+ (pd == NULL || !(pd->pktflags & PKTF_FLOW_ID))) {
+ return 0;
+ }
- if (pf_mtag == NULL && (pf_mtag = pf_get_mtag(m)) == NULL)
- return (1);
+ if (pf_mtag == NULL && (pf_mtag = pf_get_mtag_pbuf(pbuf)) == NULL) {
+ return 1;
+ }
- if (tag > 0)
+ if (tag > 0) {
pf_mtag->pftag_tag = tag;
- if (PF_RTABLEID_IS_VALID(rtableid))
+ }
+ if (PF_RTABLEID_IS_VALID(rtableid)) {
pf_mtag->pftag_rtableid = rtableid;
+ }
if (pd != NULL && (pd->pktflags & PKTF_FLOW_ID)) {
- m->m_pkthdr.pkt_flowsrc = pd->flowsrc;
- m->m_pkthdr.pkt_flowid = pd->flowhash;
- m->m_pkthdr.pkt_flags |= pd->pktflags;
- m->m_pkthdr.pkt_proto = pd->proto;
+ *pbuf->pb_flowsrc = pd->flowsrc;
+ *pbuf->pb_flowid = pd->flowhash;
+ *pbuf->pb_flags |= pd->pktflags;
+ *pbuf->pb_proto = pd->proto;
}
- return (0);
+ return 0;
}
void
pf_step_into_anchor(int *depth, struct pf_ruleset **rs, int n,
- struct pf_rule **r, struct pf_rule **a, int *match)
+ struct pf_rule **r, struct pf_rule **a, int *match)
{
- struct pf_anchor_stackframe *f;
+ struct pf_anchor_stackframe *f;
(*r)->anchor->match = 0;
- if (match)
+ if (match) {
*match = 0;
- if (*depth >= (int)sizeof (pf_anchor_stack) /
- (int)sizeof (pf_anchor_stack[0])) {
+ }
+ if (*depth >= (int)sizeof(pf_anchor_stack) /
+ (int)sizeof(pf_anchor_stack[0])) {
printf("pf_step_into_anchor: stack overflow\n");
*r = TAILQ_NEXT(*r, entries);
return;
- } else if (*depth == 0 && a != NULL)
+ } else if (*depth == 0 && a != NULL) {
*a = *r;
+ }
f = pf_anchor_stack + (*depth)++;
f->rs = *rs;
f->r = *r;
pf_step_out_of_anchor(int *depth, struct pf_ruleset **rs, int n,
struct pf_rule **r, struct pf_rule **a, int *match)
{
- struct pf_anchor_stackframe *f;
+ struct pf_anchor_stackframe *f;
int quick = 0;
do {
- if (*depth <= 0)
+ if (*depth <= 0) {
break;
+ }
f = pf_anchor_stack + *depth - 1;
if (f->parent != NULL && f->child != NULL) {
if (f->child->match ||
(match != NULL && *match)) {
f->r->anchor->match = 1;
- *match = 0;
+ if (match) {
+ *match = 0;
+ }
}
f->child = RB_NEXT(pf_anchor_node, f->parent, f->child);
if (f->child != NULL) {
*rs = &f->child->ruleset;
*r = TAILQ_FIRST((*rs)->rules[n].active.ptr);
- if (*r == NULL)
+ if (*r == NULL) {
continue;
- else
+ } else {
break;
+ }
}
}
(*depth)--;
- if (*depth == 0 && a != NULL)
+ if (*depth == 0 && a != NULL) {
*a = NULL;
+ }
*rs = f->rs;
- if (f->r->anchor->match || (match != NULL && *match))
+ if (f->r->anchor->match || (match != NULL && *match)) {
quick = f->r->quick;
+ }
*r = TAILQ_NEXT(f->r, entries);
} while (*r == NULL);
- return (quick);
+ return quick;
}
#if INET6
addr->addr32[1] = 0;
addr->addr32[0] =
htonl(ntohl(addr->addr32[0]) + 1);
- } else
+ } else {
addr->addr32[1] =
htonl(ntohl(addr->addr32[1]) + 1);
- } else
+ }
+ } else {
addr->addr32[2] =
htonl(ntohl(addr->addr32[2]) + 1);
- } else
+ }
+ } else {
addr->addr32[3] =
htonl(ntohl(addr->addr32[3]) + 1);
+ }
break;
}
}
#endif /* INET6 */
#define mix(a, b, c) \
- do { \
- a -= b; a -= c; a ^= (c >> 13); \
- b -= c; b -= a; b ^= (a << 8); \
- c -= a; c -= b; c ^= (b >> 13); \
- a -= b; a -= c; a ^= (c >> 12); \
- b -= c; b -= a; b ^= (a << 16); \
- c -= a; c -= b; c ^= (b >> 5); \
- a -= b; a -= c; a ^= (c >> 3); \
- b -= c; b -= a; b ^= (a << 10); \
- c -= a; c -= b; c ^= (b >> 15); \
+ do { \
+ a -= b; a -= c; a ^= (c >> 13); \
+ b -= c; b -= a; b ^= (a << 8); \
+ c -= a; c -= b; c ^= (b >> 13); \
+ a -= b; a -= c; a ^= (c >> 12); \
+ b -= c; b -= a; b ^= (a << 16); \
+ c -= a; c -= b; c ^= (b >> 5); \
+ a -= b; a -= c; a ^= (c >> 3); \
+ b -= c; b -= a; b ^= (a << 10); \
+ c -= a; c -= b; c ^= (b >> 15); \
} while (0)
/*
pf_hash(struct pf_addr *inaddr, struct pf_addr *hash,
struct pf_poolhashkey *key, sa_family_t af)
{
- u_int32_t a = 0x9e3779b9, b = 0x9e3779b9, c = key->key32[0];
+ u_int32_t a = 0x9e3779b9, b = 0x9e3779b9, c = key->key32[0];
switch (af) {
#if INET
pf_map_addr(sa_family_t af, struct pf_rule *r, struct pf_addr *saddr,
struct pf_addr *naddr, struct pf_addr *init_addr, struct pf_src_node **sn)
{
- unsigned char hash[16];
- struct pf_pool *rpool = &r->rpool;
- struct pf_addr *raddr = &rpool->cur->addr.v.a.addr;
- struct pf_addr *rmask = &rpool->cur->addr.v.a.mask;
- struct pf_pooladdr *acur = rpool->cur;
- struct pf_src_node k;
+ unsigned char hash[16];
+ struct pf_pool *rpool = &r->rpool;
+ struct pf_addr *raddr = &rpool->cur->addr.v.a.addr;
+ struct pf_addr *rmask = &rpool->cur->addr.v.a.mask;
+ struct pf_pooladdr *acur = rpool->cur;
+ struct pf_src_node k;
if (*sn == NULL && r->rpool.opts & PF_POOL_STICKYADDR &&
(r->rpool.opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) {
k.af = af;
PF_ACPY(&k.addr, saddr, af);
if (r->rule_flag & PFRULE_RULESRCTRACK ||
- r->rpool.opts & PF_POOL_STICKYADDR)
+ r->rpool.opts & PF_POOL_STICKYADDR) {
k.rule.ptr = r;
- else
+ } else {
k.rule.ptr = NULL;
+ }
pf_status.scounters[SCNT_SRC_NODE_SEARCH]++;
*sn = RB_FIND(pf_src_tree, &tree_src_tracking, &k);
- if (*sn != NULL && !PF_AZERO(&(*sn)->raddr, af)) {
- PF_ACPY(naddr, &(*sn)->raddr, af);
+ if (*sn != NULL && !PF_AZERO(&(*sn)->raddr, rpool->af)) {
+ PF_ACPY(naddr, &(*sn)->raddr, rpool->af);
if (pf_status.debug >= PF_DEBUG_MISC) {
printf("pf_map_addr: src tracking maps ");
pf_print_host(&k.addr, 0, af);
printf(" to ");
- pf_print_host(naddr, 0, af);
+ pf_print_host(naddr, 0, rpool->af);
printf("\n");
}
- return (0);
+ return 0;
}
}
- if (rpool->cur->addr.type == PF_ADDR_NOROUTE)
- return (1);
+ if (rpool->cur->addr.type == PF_ADDR_NOROUTE) {
+ return 1;
+ }
if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
- if (rpool->cur->addr.p.dyn == NULL)
- return (1);
- switch (af) {
+ if (rpool->cur->addr.p.dyn == NULL) {
+ return 1;
+ }
+ switch (rpool->af) {
#if INET
case AF_INET:
if (rpool->cur->addr.p.dyn->pfid_acnt4 < 1 &&
(rpool->opts & PF_POOL_TYPEMASK) !=
- PF_POOL_ROUNDROBIN)
- return (1);
+ PF_POOL_ROUNDROBIN) {
+ return 1;
+ }
raddr = &rpool->cur->addr.p.dyn->pfid_addr4;
rmask = &rpool->cur->addr.p.dyn->pfid_mask4;
break;
case AF_INET6:
if (rpool->cur->addr.p.dyn->pfid_acnt6 < 1 &&
(rpool->opts & PF_POOL_TYPEMASK) !=
- PF_POOL_ROUNDROBIN)
- return (1);
+ PF_POOL_ROUNDROBIN) {
+ return 1;
+ }
raddr = &rpool->cur->addr.p.dyn->pfid_addr6;
rmask = &rpool->cur->addr.p.dyn->pfid_mask6;
break;
#endif /* INET6 */
}
} else if (rpool->cur->addr.type == PF_ADDR_TABLE) {
- if ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN)
- return (1); /* unsupported */
+ if ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN) {
+ return 1; /* unsupported */
+ }
} else {
raddr = &rpool->cur->addr.v.a.addr;
rmask = &rpool->cur->addr.v.a.mask;
switch (rpool->opts & PF_POOL_TYPEMASK) {
case PF_POOL_NONE:
- PF_ACPY(naddr, raddr, af);
+ PF_ACPY(naddr, raddr, rpool->af);
break;
case PF_POOL_BITMASK:
+ ASSERT(af == rpool->af);
PF_POOLMASK(naddr, raddr, rmask, saddr, af);
break;
case PF_POOL_RANDOM:
- if (init_addr != NULL && PF_AZERO(init_addr, af)) {
+ if (init_addr != NULL && PF_AZERO(init_addr, rpool->af)) {
switch (af) {
#if INET
case AF_INET:
#endif /* INET */
#if INET6
case AF_INET6:
- if (rmask->addr32[3] != 0xffffffff)
+ if (rmask->addr32[3] != 0xffffffff) {
rpool->counter.addr32[3] =
RandomULong();
- else
+ } else {
break;
- if (rmask->addr32[2] != 0xffffffff)
+ }
+ if (rmask->addr32[2] != 0xffffffff) {
rpool->counter.addr32[2] =
RandomULong();
- else
+ } else {
break;
- if (rmask->addr32[1] != 0xffffffff)
+ }
+ if (rmask->addr32[1] != 0xffffffff) {
rpool->counter.addr32[1] =
RandomULong();
- else
+ } else {
break;
- if (rmask->addr32[0] != 0xffffffff)
+ }
+ if (rmask->addr32[0] != 0xffffffff) {
rpool->counter.addr32[0] =
RandomULong();
+ }
break;
#endif /* INET6 */
}
- PF_POOLMASK(naddr, raddr, rmask, &rpool->counter, af);
- PF_ACPY(init_addr, naddr, af);
-
+ PF_POOLMASK(naddr, raddr, rmask, &rpool->counter,
+ rpool->af);
+ PF_ACPY(init_addr, naddr, rpool->af);
} else {
- PF_AINC(&rpool->counter, af);
- PF_POOLMASK(naddr, raddr, rmask, &rpool->counter, af);
+ PF_AINC(&rpool->counter, rpool->af);
+ PF_POOLMASK(naddr, raddr, rmask, &rpool->counter,
+ rpool->af);
}
break;
case PF_POOL_SRCHASH:
+ ASSERT(af == rpool->af);
+ PF_POOLMASK(naddr, raddr, rmask, saddr, af);
pf_hash(saddr, (struct pf_addr *)(void *)&hash,
&rpool->key, af);
PF_POOLMASK(naddr, raddr, rmask,
if (rpool->cur->addr.type == PF_ADDR_TABLE) {
if (!pfr_pool_get(rpool->cur->addr.p.tbl,
&rpool->tblidx, &rpool->counter,
- &raddr, &rmask, af))
+ &raddr, &rmask, rpool->af)) {
goto get_addr;
+ }
} else if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
if (rpool->cur->addr.p.dyn != NULL &&
!pfr_pool_get(rpool->cur->addr.p.dyn->pfid_kt,
&rpool->tblidx, &rpool->counter,
- &raddr, &rmask, af))
+ &raddr, &rmask, af)) {
goto get_addr;
- } else if (pf_match_addr(0, raddr, rmask, &rpool->counter, af))
+ }
+ } else if (pf_match_addr(0, raddr, rmask, &rpool->counter,
+ rpool->af)) {
goto get_addr;
+ }
- try_next:
- if ((rpool->cur = TAILQ_NEXT(rpool->cur, entries)) == NULL)
+try_next:
+ if ((rpool->cur = TAILQ_NEXT(rpool->cur, entries)) == NULL) {
rpool->cur = TAILQ_FIRST(&rpool->list);
+ }
if (rpool->cur->addr.type == PF_ADDR_TABLE) {
rpool->tblidx = -1;
if (pfr_pool_get(rpool->cur->addr.p.tbl,
&rpool->tblidx, &rpool->counter,
- &raddr, &rmask, af)) {
- /* table contains no address of type 'af' */
- if (rpool->cur != acur)
+ &raddr, &rmask, rpool->af)) {
+ /* table contains no address of type
+ * 'rpool->af' */
+ if (rpool->cur != acur) {
goto try_next;
- return (1);
+ }
+ return 1;
}
} else if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
rpool->tblidx = -1;
- if (rpool->cur->addr.p.dyn == NULL)
- return (1);
+ if (rpool->cur->addr.p.dyn == NULL) {
+ return 1;
+ }
if (pfr_pool_get(rpool->cur->addr.p.dyn->pfid_kt,
&rpool->tblidx, &rpool->counter,
- &raddr, &rmask, af)) {
- /* table contains no address of type 'af' */
- if (rpool->cur != acur)
+ &raddr, &rmask, rpool->af)) {
+ /* table contains no address of type
+ * 'rpool->af' */
+ if (rpool->cur != acur) {
goto try_next;
- return (1);
+ }
+ return 1;
}
} else {
raddr = &rpool->cur->addr.v.a.addr;
rmask = &rpool->cur->addr.v.a.mask;
- PF_ACPY(&rpool->counter, raddr, af);
+ PF_ACPY(&rpool->counter, raddr, rpool->af);
}
- get_addr:
- PF_ACPY(naddr, &rpool->counter, af);
- if (init_addr != NULL && PF_AZERO(init_addr, af))
- PF_ACPY(init_addr, naddr, af);
- PF_AINC(&rpool->counter, af);
+get_addr:
+ PF_ACPY(naddr, &rpool->counter, rpool->af);
+ if (init_addr != NULL && PF_AZERO(init_addr, rpool->af)) {
+ PF_ACPY(init_addr, naddr, rpool->af);
+ }
+ PF_AINC(&rpool->counter, rpool->af);
break;
}
- if (*sn != NULL)
- PF_ACPY(&(*sn)->raddr, naddr, af);
+ if (*sn != NULL) {
+ PF_ACPY(&(*sn)->raddr, naddr, rpool->af);
+ }
if (pf_status.debug >= PF_DEBUG_MISC &&
(rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) {
printf("pf_map_addr: selected address ");
- pf_print_host(naddr, 0, af);
+ pf_print_host(naddr, 0, rpool->af);
printf("\n");
}
- return (0);
+ return 0;
}
static int
pf_get_sport(struct pf_pdesc *pd, struct pfi_kif *kif, struct pf_rule *r,
struct pf_addr *saddr, union pf_state_xport *sxport, struct pf_addr *daddr,
union pf_state_xport *dxport, struct pf_addr *naddr,
- union pf_state_xport *nxport, struct pf_src_node **sn)
+ union pf_state_xport *nxport, struct pf_src_node **sn
+ )
{
#pragma unused(kif)
- struct pf_state_key_cmp key;
- struct pf_addr init_addr;
+ struct pf_state_key_cmp key;
+ struct pf_addr init_addr;
unsigned int cut;
sa_family_t af = pd->af;
u_int8_t proto = pd->proto;
unsigned int low = r->rpool.proxy_port[0];
unsigned int high = r->rpool.proxy_port[1];
- bzero(&init_addr, sizeof (init_addr));
- if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn))
- return (1);
+ bzero(&init_addr, sizeof(init_addr));
+ if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn)) {
+ return 1;
+ }
if (proto == IPPROTO_ICMP) {
low = 1;
high = 65535;
}
- if (!nxport)
- return (0); /* No output necessary. */
-
+ if (!nxport) {
+ return 0; /* No output necessary. */
+ }
/*--- Special mapping rules for UDP ---*/
if (proto == IPPROTO_UDP) {
-
/*--- Never float IKE source port ---*/
if (ntohs(sxport->port) == PF_IKE_PORT) {
nxport->port = sxport->port;
- return (0);
+ return 0;
}
/*--- Apply exterior mapping options ---*/
TAILQ_FOREACH(s, &state_list, entry_list) {
struct pf_state_key *sk = s->state_key;
- if (!sk)
+ if (!sk) {
continue;
- if (s->nat_rule.ptr != r)
+ }
+ if (s->nat_rule.ptr != r) {
continue;
- if (sk->proto != IPPROTO_UDP || sk->af != af)
+ }
+ if (sk->proto != IPPROTO_UDP ||
+ sk->af_lan != af) {
continue;
- if (sk->lan.xport.port != sxport->port)
+ }
+ if (sk->lan.xport.port != sxport->port) {
continue;
- if (PF_ANEQ(&sk->lan.addr, saddr, af))
+ }
+ if (PF_ANEQ(&sk->lan.addr, saddr, af)) {
continue;
+ }
if (r->extmap < PF_EXTMAP_EI &&
- PF_ANEQ(&sk->ext.addr, daddr, af))
+ PF_ANEQ(&sk->ext_lan.addr, daddr, af)) {
continue;
+ }
nxport->port = sk->gwy.xport.port;
- return (0);
+ return 0;
}
}
} else if (proto == IPPROTO_TCP) {
*/
TAILQ_FOREACH(s, &state_list, entry_list) {
struct pf_state_key* sk = s->state_key;
- if (!sk)
+ if (!sk) {
continue;
- if (s->nat_rule.ptr != r)
+ }
+ if (s->nat_rule.ptr != r) {
+ continue;
+ }
+ if (sk->proto != IPPROTO_TCP || sk->af_lan != af) {
continue;
- if (sk->proto != IPPROTO_TCP || sk->af != af)
- continue;
- if (sk->lan.xport.port != sxport->port)
+ }
+ if (sk->lan.xport.port != sxport->port) {
continue;
- if (!(PF_AEQ(&sk->lan.addr, saddr, af)))
+ }
+ if (!(PF_AEQ(&sk->lan.addr, saddr, af))) {
continue;
+ }
nxport->port = sk->gwy.xport.port;
- return (0);
+ return 0;
}
}
do {
- key.af = af;
+ key.af_gwy = af;
key.proto = proto;
- PF_ACPY(&key.ext.addr, daddr, key.af);
- PF_ACPY(&key.gwy.addr, naddr, key.af);
+ PF_ACPY(&key.ext_gwy.addr, daddr, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, naddr, key.af_gwy);
switch (proto) {
- case IPPROTO_UDP:
- key.proto_variant = r->extfilter;
- break;
- default:
- key.proto_variant = 0;
- break;
+ case IPPROTO_UDP:
+ key.proto_variant = r->extfilter;
+ break;
+ default:
+ key.proto_variant = 0;
+ break;
+ }
+ if (dxport) {
+ key.ext_gwy.xport = *dxport;
+ } else {
+ memset(&key.ext_gwy.xport, 0,
+ sizeof(key.ext_gwy.xport));
}
- if (dxport)
- key.ext.xport = *dxport;
- else
- memset(&key.ext.xport, 0, sizeof (key.ext.xport));
/*
* port search; start random, step;
* similar 2 portloop in in_pcbbind
*/
if (!(proto == IPPROTO_TCP || proto == IPPROTO_UDP ||
proto == IPPROTO_ICMP)) {
- if (dxport)
+ if (dxport) {
key.gwy.xport = *dxport;
- else
+ } else {
memset(&key.gwy.xport, 0,
- sizeof (key.ext.xport));
- if (pf_find_state_all(&key, PF_IN, NULL) == NULL)
- return (0);
+ sizeof(key.gwy.xport));
+ }
+ if (pf_find_state_all(&key, PF_IN, NULL) == NULL) {
+ return 0;
+ }
} else if (low == 0 && high == 0) {
key.gwy.xport = *nxport;
- if (pf_find_state_all(&key, PF_IN, NULL) == NULL)
- return (0);
+ if (pf_find_state_all(&key, PF_IN, NULL) == NULL
+ ) {
+ return 0;
+ }
} else if (low == high) {
key.gwy.xport.port = htons(low);
- if (pf_find_state_all(&key, PF_IN, NULL) == NULL) {
+ if (pf_find_state_all(&key, PF_IN, NULL) == NULL
+ ) {
nxport->port = htons(low);
- return (0);
+ return 0;
}
} else {
unsigned int tmp;
/* low <= cut <= high */
for (tmp = cut; tmp <= high; ++(tmp)) {
key.gwy.xport.port = htons(tmp);
- if (pf_find_state_all(&key, PF_IN, NULL) ==
- NULL) {
+ if (pf_find_state_all(&key, PF_IN, NULL) == NULL
+ ) {
nxport->port = htons(tmp);
- return (0);
+ return 0;
}
}
for (tmp = cut - 1; tmp >= low; --(tmp)) {
key.gwy.xport.port = htons(tmp);
- if (pf_find_state_all(&key, PF_IN, NULL) ==
- NULL) {
+ if (pf_find_state_all(&key, PF_IN, NULL) == NULL
+ ) {
nxport->port = htons(tmp);
- return (0);
+ return 0;
}
}
}
switch (r->rpool.opts & PF_POOL_TYPEMASK) {
case PF_POOL_RANDOM:
case PF_POOL_ROUNDROBIN:
- if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn))
- return (1);
+ if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn)) {
+ return 1;
+ }
break;
case PF_POOL_NONE:
case PF_POOL_SRCHASH:
case PF_POOL_BITMASK:
default:
- return (1);
+ return 1;
}
} while (!PF_AEQ(&init_addr, naddr, af));
- return (1); /* none available */
+ return 1; /* none available */
}
static struct pf_rule *
-pf_match_translation(struct pf_pdesc *pd, struct mbuf *m, int off,
+pf_match_translation(struct pf_pdesc *pd, pbuf_t *pbuf, int off,
int direction, struct pfi_kif *kif, struct pf_addr *saddr,
union pf_state_xport *sxport, struct pf_addr *daddr,
union pf_state_xport *dxport, int rs_num)
{
- struct pf_rule *r, *rm = NULL;
- struct pf_ruleset *ruleset = NULL;
- int tag = -1;
- unsigned int rtableid = IFSCOPE_NONE;
- int asd = 0;
+ struct pf_rule *r, *rm = NULL;
+ struct pf_ruleset *ruleset = NULL;
+ int tag = -1;
+ unsigned int rtableid = IFSCOPE_NONE;
+ int asd = 0;
r = TAILQ_FIRST(pf_main_ruleset.rules[rs_num].active.ptr);
while (r && rm == NULL) {
- struct pf_rule_addr *src = NULL, *dst = NULL;
- struct pf_addr_wrap *xdst = NULL;
- struct pf_addr_wrap *xsrc = NULL;
- union pf_rule_xport rdrxport;
+ struct pf_rule_addr *src = NULL, *dst = NULL;
+ struct pf_addr_wrap *xdst = NULL;
+ struct pf_addr_wrap *xsrc = NULL;
+ union pf_rule_xport rdrxport;
if (r->action == PF_BINAT && direction == PF_IN) {
src = &r->dst;
- if (r->rpool.cur != NULL)
+ if (r->rpool.cur != NULL) {
xdst = &r->rpool.cur->addr;
+ }
} else if (r->action == PF_RDR && direction == PF_OUT) {
dst = &r->src;
src = &r->dst;
}
r->evaluations++;
- if (pfi_kif_match(r->kif, kif) == r->ifnot)
+ if (pfi_kif_match(r->kif, kif) == r->ifnot) {
r = r->skip[PF_SKIP_IFP].ptr;
- else if (r->direction && r->direction != direction)
+ } else if (r->direction && r->direction != direction) {
r = r->skip[PF_SKIP_DIR].ptr;
- else if (r->af && r->af != pd->af)
+ } else if (r->af && r->af != pd->af) {
r = r->skip[PF_SKIP_AF].ptr;
- else if (r->proto && r->proto != pd->proto)
+ } else if (r->proto && r->proto != pd->proto) {
r = r->skip[PF_SKIP_PROTO].ptr;
- else if (xsrc && PF_MISMATCHAW(xsrc, saddr, pd->af, 0, NULL))
+ } else if (xsrc && PF_MISMATCHAW(xsrc, saddr, pd->af, 0, NULL)) {
r = TAILQ_NEXT(r, entries);
- else if (!xsrc && PF_MISMATCHAW(&src->addr, saddr, pd->af,
- src->neg, kif))
+ } else if (!xsrc && PF_MISMATCHAW(&src->addr, saddr, pd->af,
+ src->neg, kif)) {
r = TAILQ_NEXT(r, entries);
- else if (xsrc && (!rdrxport.range.port[0] ||
+ } else if (xsrc && (!rdrxport.range.port[0] ||
!pf_match_xport(r->proto, r->proto_variant, &rdrxport,
- sxport)))
+ sxport))) {
r = TAILQ_NEXT(r, entries);
- else if (!xsrc && !pf_match_xport(r->proto,
- r->proto_variant, &src->xport, sxport))
+ } else if (!xsrc && !pf_match_xport(r->proto,
+ r->proto_variant, &src->xport, sxport)) {
r = r->skip[src == &r->src ? PF_SKIP_SRC_PORT :
PF_SKIP_DST_PORT].ptr;
- else if (dst != NULL &&
- PF_MISMATCHAW(&dst->addr, daddr, pd->af, dst->neg, NULL))
+ } else if (dst != NULL &&
+ PF_MISMATCHAW(&dst->addr, daddr, pd->af, dst->neg, NULL)) {
r = r->skip[PF_SKIP_DST_ADDR].ptr;
- else if (xdst != NULL && PF_MISMATCHAW(xdst, daddr, pd->af,
- 0, NULL))
+ } else if (xdst != NULL && PF_MISMATCHAW(xdst, daddr, pd->af,
+ 0, NULL)) {
r = TAILQ_NEXT(r, entries);
- else if (dst && !pf_match_xport(r->proto, r->proto_variant,
- &dst->xport, dxport))
+ } else if (dst && !pf_match_xport(r->proto, r->proto_variant,
+ &dst->xport, dxport)) {
r = r->skip[PF_SKIP_DST_PORT].ptr;
- else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+ } else if (r->match_tag && !pf_match_tag(r, pd->pf_mtag, &tag)) {
r = TAILQ_NEXT(r, entries);
- else if (r->os_fingerprint != PF_OSFP_ANY && (pd->proto !=
- IPPROTO_TCP || !pf_osfp_match(pf_osfp_fingerprint(pd, m,
- off, pd->hdr.tcp), r->os_fingerprint)))
+ } else if (r->os_fingerprint != PF_OSFP_ANY && (pd->proto !=
+ IPPROTO_TCP || !pf_osfp_match(pf_osfp_fingerprint(pd, pbuf,
+ off, pd->hdr.tcp), r->os_fingerprint))) {
r = TAILQ_NEXT(r, entries);
- else {
- if (r->tag)
+ } else {
+ if (r->tag) {
tag = r->tag;
- if (PF_RTABLEID_IS_VALID(r->rtableid))
+ }
+ if (PF_RTABLEID_IS_VALID(r->rtableid)) {
rtableid = r->rtableid;
+ }
if (r->anchor == NULL) {
rm = r;
- } else
+ } else {
pf_step_into_anchor(&asd, &ruleset, rs_num,
&r, NULL, NULL);
+ }
}
- if (r == NULL)
+ if (r == NULL) {
pf_step_out_of_anchor(&asd, &ruleset, rs_num, &r,
NULL, NULL);
+ }
+ }
+ if (pf_tag_packet(pbuf, pd->pf_mtag, tag, rtableid, NULL)) {
+ return NULL;
}
- if (pf_tag_packet(m, pd->pf_mtag, tag, rtableid, NULL))
- return (NULL);
if (rm != NULL && (rm->action == PF_NONAT ||
- rm->action == PF_NORDR || rm->action == PF_NOBINAT))
- return (NULL);
- return (rm);
+ rm->action == PF_NORDR || rm->action == PF_NOBINAT ||
+ rm->action == PF_NONAT64)) {
+ return NULL;
+ }
+ return rm;
}
+/*
+ * Get address translation information for NAT/BINAT/RDR
+ * pd : pf packet descriptor
+ * pbuf : pbuf holding the packet
+ * off : offset to protocol header
+ * direction : direction of packet
+ * kif : pf interface info obtained from the packet's recv interface
+ * sn : source node pointer (output)
+ * saddr : packet source address
+ * sxport : packet source port
+ * daddr : packet destination address
+ * dxport : packet destination port
+ * nsxport : translated source port (output)
+ *
+ * Translated source & destination address are updated in pd->nsaddr &
+ * pd->ndaddr
+ */
static struct pf_rule *
-pf_get_translation_aux(struct pf_pdesc *pd, struct mbuf *m, int off,
+pf_get_translation_aux(struct pf_pdesc *pd, pbuf_t *pbuf, int off,
int direction, struct pfi_kif *kif, struct pf_src_node **sn,
struct pf_addr *saddr, union pf_state_xport *sxport, struct pf_addr *daddr,
- union pf_state_xport *dxport, struct pf_addr *naddr,
- union pf_state_xport *nxport)
+ union pf_state_xport *dxport, union pf_state_xport *nsxport
+ )
{
- struct pf_rule *r = NULL;
+ struct pf_rule *r = NULL;
+ pd->naf = pd->af;
if (direction == PF_OUT) {
- r = pf_match_translation(pd, m, off, direction, kif, saddr,
+ r = pf_match_translation(pd, pbuf, off, direction, kif, saddr,
sxport, daddr, dxport, PF_RULESET_BINAT);
- if (r == NULL)
- r = pf_match_translation(pd, m, off, direction, kif,
+ if (r == NULL) {
+ r = pf_match_translation(pd, pbuf, off, direction, kif,
saddr, sxport, daddr, dxport, PF_RULESET_RDR);
- if (r == NULL)
- r = pf_match_translation(pd, m, off, direction, kif,
+ }
+ if (r == NULL) {
+ r = pf_match_translation(pd, pbuf, off, direction, kif,
saddr, sxport, daddr, dxport, PF_RULESET_NAT);
+ }
} else {
- r = pf_match_translation(pd, m, off, direction, kif, saddr,
+ r = pf_match_translation(pd, pbuf, off, direction, kif, saddr,
sxport, daddr, dxport, PF_RULESET_RDR);
- if (r == NULL)
- r = pf_match_translation(pd, m, off, direction, kif,
+ if (r == NULL) {
+ r = pf_match_translation(pd, pbuf, off, direction, kif,
saddr, sxport, daddr, dxport, PF_RULESET_BINAT);
+ }
}
if (r != NULL) {
+ struct pf_addr *nsaddr = &pd->naddr;
+ struct pf_addr *ndaddr = &pd->ndaddr;
+
+ *nsaddr = *saddr;
+ *ndaddr = *daddr;
+
switch (r->action) {
case PF_NONAT:
+ case PF_NONAT64:
case PF_NOBINAT:
case PF_NORDR:
- return (NULL);
+ return NULL;
case PF_NAT:
+ case PF_NAT64:
+ /*
+ * we do NAT64 on incoming path and we call ip_input
+ * which asserts receive interface to be not NULL.
+ * The below check is to prevent NAT64 action on any
+ * packet generated by local entity using synthesized
+ * IPv6 address.
+ */
+ if ((r->action == PF_NAT64) && (direction == PF_OUT)) {
+ return NULL;
+ }
+
if (pf_get_sport(pd, kif, r, saddr, sxport, daddr,
- dxport, naddr, nxport, sn)) {
+ dxport, nsaddr, nsxport, sn
+ )) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: NAT proxy port allocation "
"(%u-%u) failed\n",
r->rpool.proxy_port[0],
r->rpool.proxy_port[1]));
- return (NULL);
+ return NULL;
+ }
+ /*
+ * For NAT64 the destination IPv4 address is derived
+ * from the last 32 bits of synthesized IPv6 address
+ */
+ if (r->action == PF_NAT64) {
+ ndaddr->v4addr.s_addr = daddr->addr32[3];
+ pd->naf = AF_INET;
}
break;
case PF_BINAT:
case PF_OUT:
if (r->rpool.cur->addr.type ==
PF_ADDR_DYNIFTL) {
- if (r->rpool.cur->addr.p.dyn == NULL)
- return (NULL);
+ if (r->rpool.cur->addr.p.dyn == NULL) {
+ return NULL;
+ }
switch (pd->af) {
#if INET
case AF_INET:
if (r->rpool.cur->addr.p.dyn->
- pfid_acnt4 < 1)
- return (NULL);
- PF_POOLMASK(naddr,
+ pfid_acnt4 < 1) {
+ return NULL;
+ }
+ PF_POOLMASK(nsaddr,
&r->rpool.cur->addr.p.dyn->
pfid_addr4,
&r->rpool.cur->addr.p.dyn->
#if INET6
case AF_INET6:
if (r->rpool.cur->addr.p.dyn->
- pfid_acnt6 < 1)
- return (NULL);
- PF_POOLMASK(naddr,
+ pfid_acnt6 < 1) {
+ return NULL;
+ }
+ PF_POOLMASK(nsaddr,
&r->rpool.cur->addr.p.dyn->
pfid_addr6,
&r->rpool.cur->addr.p.dyn->
#endif /* INET6 */
}
} else {
- PF_POOLMASK(naddr,
+ PF_POOLMASK(nsaddr,
&r->rpool.cur->addr.v.a.addr,
&r->rpool.cur->addr.v.a.mask,
saddr, pd->af);
break;
case PF_IN:
if (r->src.addr.type == PF_ADDR_DYNIFTL) {
- if (r->src.addr.p.dyn == NULL)
- return (NULL);
+ if (r->src.addr.p.dyn == NULL) {
+ return NULL;
+ }
switch (pd->af) {
#if INET
case AF_INET:
if (r->src.addr.p.dyn->
- pfid_acnt4 < 1)
- return (NULL);
- PF_POOLMASK(naddr,
+ pfid_acnt4 < 1) {
+ return NULL;
+ }
+ PF_POOLMASK(ndaddr,
&r->src.addr.p.dyn->
pfid_addr4,
&r->src.addr.p.dyn->
#if INET6
case AF_INET6:
if (r->src.addr.p.dyn->
- pfid_acnt6 < 1)
- return (NULL);
- PF_POOLMASK(naddr,
+ pfid_acnt6 < 1) {
+ return NULL;
+ }
+ PF_POOLMASK(ndaddr,
&r->src.addr.p.dyn->
pfid_addr6,
&r->src.addr.p.dyn->
break;
#endif /* INET6 */
}
- } else
- PF_POOLMASK(naddr,
+ } else {
+ PF_POOLMASK(ndaddr,
&r->src.addr.v.a.addr,
&r->src.addr.v.a.mask, daddr,
pd->af);
+ }
break;
}
break;
switch (direction) {
case PF_OUT:
if (r->dst.addr.type == PF_ADDR_DYNIFTL) {
- if (r->dst.addr.p.dyn == NULL)
- return (NULL);
+ if (r->dst.addr.p.dyn == NULL) {
+ return NULL;
+ }
switch (pd->af) {
#if INET
case AF_INET:
if (r->dst.addr.p.dyn->
- pfid_acnt4 < 1)
- return (NULL);
- PF_POOLMASK(naddr,
+ pfid_acnt4 < 1) {
+ return NULL;
+ }
+ PF_POOLMASK(nsaddr,
&r->dst.addr.p.dyn->
pfid_addr4,
&r->dst.addr.p.dyn->
#if INET6
case AF_INET6:
if (r->dst.addr.p.dyn->
- pfid_acnt6 < 1)
- return (NULL);
- PF_POOLMASK(naddr,
+ pfid_acnt6 < 1) {
+ return NULL;
+ }
+ PF_POOLMASK(nsaddr,
&r->dst.addr.p.dyn->
pfid_addr6,
&r->dst.addr.p.dyn->
#endif /* INET6 */
}
} else {
- PF_POOLMASK(naddr,
+ PF_POOLMASK(nsaddr,
&r->dst.addr.v.a.addr,
&r->dst.addr.v.a.mask,
daddr, pd->af);
}
- if (nxport && r->dst.xport.range.port[0])
- nxport->port =
+ if (nsxport && r->dst.xport.range.port[0]) {
+ nsxport->port =
r->dst.xport.range.port[0];
+ }
break;
case PF_IN:
if (pf_map_addr(pd->af, r, saddr,
- naddr, NULL, sn))
- return (NULL);
+ ndaddr, NULL, sn)) {
+ return NULL;
+ }
if ((r->rpool.opts & PF_POOL_TYPEMASK) ==
- PF_POOL_BITMASK)
- PF_POOLMASK(naddr, naddr,
+ PF_POOL_BITMASK) {
+ PF_POOLMASK(ndaddr, ndaddr,
&r->rpool.cur->addr.v.a.mask, daddr,
pd->af);
+ }
- if (nxport && dxport) {
+ if (nsxport && dxport) {
if (r->rpool.proxy_port[1]) {
- u_int32_t tmp_nport;
+ u_int32_t tmp_nport;
tmp_nport =
((ntohs(dxport->port) -
1)) + r->rpool.proxy_port[0];
/* wrap around if necessary */
- if (tmp_nport > 65535)
+ if (tmp_nport > 65535) {
tmp_nport -= 65535;
- nxport->port =
+ }
+ nsxport->port =
htons((u_int16_t)tmp_nport);
} else if (r->rpool.proxy_port[0]) {
- nxport->port = htons(r->rpool.
+ nsxport->port = htons(r->rpool.
proxy_port[0]);
}
}
break;
}
default:
- return (NULL);
+ return NULL;
}
}
- return (r);
+ return r;
}
int
pf_socket_lookup(int direction, struct pf_pdesc *pd)
{
- struct pf_addr *saddr, *daddr;
- u_int16_t sport, dport;
- struct inpcbinfo *pi;
- int inp = 0;
+ struct pf_addr *saddr, *daddr;
+ u_int16_t sport, dport;
+ struct inpcbinfo *pi;
+ int inp = 0;
- if (pd == NULL)
- return (-1);
+ if (pd == NULL) {
+ return -1;
+ }
pd->lookup.uid = UID_MAX;
pd->lookup.gid = GID_MAX;
pd->lookup.pid = NO_PID;
switch (pd->proto) {
case IPPROTO_TCP:
- if (pd->hdr.tcp == NULL)
- return (-1);
+ if (pd->hdr.tcp == NULL) {
+ return -1;
+ }
sport = pd->hdr.tcp->th_sport;
dport = pd->hdr.tcp->th_dport;
pi = &tcbinfo;
break;
case IPPROTO_UDP:
- if (pd->hdr.udp == NULL)
- return (-1);
+ if (pd->hdr.udp == NULL) {
+ return -1;
+ }
sport = pd->hdr.udp->uh_sport;
dport = pd->hdr.udp->uh_dport;
pi = &udbinfo;
break;
default:
- return (-1);
+ return -1;
}
if (direction == PF_IN) {
saddr = pd->src;
daddr = pd->dst;
} else {
- u_int16_t p;
+ u_int16_t p;
p = sport;
sport = dport;
switch (pd->af) {
#if INET
case AF_INET:
- inp = in_pcblookup_hash_exists(pi, saddr->v4, sport, daddr->v4, dport,
+ inp = in_pcblookup_hash_exists(pi, saddr->v4addr, sport, daddr->v4addr, dport,
0, &pd->lookup.uid, &pd->lookup.gid, NULL);
#if INET6
if (inp == 0) {
struct in6_addr s6, d6;
- memset(&s6, 0, sizeof (s6));
+ memset(&s6, 0, sizeof(s6));
s6.s6_addr16[5] = htons(0xffff);
- memcpy(&s6.s6_addr32[3], &saddr->v4,
- sizeof (saddr->v4));
+ memcpy(&s6.s6_addr32[3], &saddr->v4addr,
+ sizeof(saddr->v4addr));
- memset(&d6, 0, sizeof (d6));
+ memset(&d6, 0, sizeof(d6));
d6.s6_addr16[5] = htons(0xffff);
- memcpy(&d6.s6_addr32[3], &daddr->v4,
- sizeof (daddr->v4));
+ memcpy(&d6.s6_addr32[3], &daddr->v4addr,
+ sizeof(daddr->v4addr));
inp = in6_pcblookup_hash_exists(pi, &s6, sport,
&d6, dport, 0, &pd->lookup.uid, &pd->lookup.gid, NULL);
if (inp == 0) {
- inp = in_pcblookup_hash_exists(pi, saddr->v4, sport,
- daddr->v4, dport, INPLOOKUP_WILDCARD, &pd->lookup.uid, &pd->lookup.gid, NULL);
+ inp = in_pcblookup_hash_exists(pi, saddr->v4addr, sport,
+ daddr->v4addr, dport, INPLOOKUP_WILDCARD, &pd->lookup.uid, &pd->lookup.gid, NULL);
if (inp == 0) {
inp = in6_pcblookup_hash_exists(pi, &s6, sport,
&d6, dport, INPLOOKUP_WILDCARD,
&pd->lookup.uid, &pd->lookup.gid, NULL);
- if (inp == 0)
- return (-1);
+ if (inp == 0) {
+ return -1;
+ }
}
}
}
#else
if (inp == 0) {
- inp = in_pcblookup_hash_exists(pi, saddr->v4, sport,
- daddr->v4, dport, INPLOOKUP_WILDCARD,
+ inp = in_pcblookup_hash_exists(pi, saddr->v4addr, sport,
+ daddr->v4addr, dport, INPLOOKUP_WILDCARD,
&pd->lookup.uid, &pd->lookup.gid, NULL);
- if (inp == 0)
- return (-1);
+ if (inp == 0) {
+ return -1;
+ }
}
#endif /* !INET6 */
break;
#endif /* INET */
#if INET6
case AF_INET6:
- inp = in6_pcblookup_hash_exists(pi, &saddr->v6, sport, &daddr->v6,
+ inp = in6_pcblookup_hash_exists(pi, &saddr->v6addr, sport, &daddr->v6addr,
dport, 0, &pd->lookup.uid, &pd->lookup.gid, NULL);
if (inp == 0) {
- inp = in6_pcblookup_hash_exists(pi, &saddr->v6, sport,
- &daddr->v6, dport, INPLOOKUP_WILDCARD,
+ inp = in6_pcblookup_hash_exists(pi, &saddr->v6addr, sport,
+ &daddr->v6addr, dport, INPLOOKUP_WILDCARD,
&pd->lookup.uid, &pd->lookup.gid, NULL);
- if (inp == 0)
- return (-1);
+ if (inp == 0) {
+ return -1;
+ }
}
break;
#endif /* INET6 */
-
+
default:
- return (-1);
+ return -1;
}
- return (1);
+ return 1;
}
static u_int8_t
-pf_get_wscale(struct mbuf *m, int off, u_int16_t th_off, sa_family_t af)
+pf_get_wscale(pbuf_t *pbuf, int off, u_int16_t th_off, sa_family_t af)
{
- int hlen;
- u_int8_t hdr[60];
- u_int8_t *opt, optlen;
- u_int8_t wscale = 0;
-
- hlen = th_off << 2; /* hlen <= sizeof (hdr) */
- if (hlen <= (int)sizeof (struct tcphdr))
- return (0);
- if (!pf_pull_hdr(m, off, hdr, hlen, NULL, NULL, af))
- return (0);
- opt = hdr + sizeof (struct tcphdr);
- hlen -= sizeof (struct tcphdr);
+ int hlen;
+ u_int8_t hdr[60];
+ u_int8_t *opt, optlen;
+ u_int8_t wscale = 0;
+
+ hlen = th_off << 2; /* hlen <= sizeof (hdr) */
+ if (hlen <= (int)sizeof(struct tcphdr)) {
+ return 0;
+ }
+ if (!pf_pull_hdr(pbuf, off, hdr, hlen, NULL, NULL, af)) {
+ return 0;
+ }
+ opt = hdr + sizeof(struct tcphdr);
+ hlen -= sizeof(struct tcphdr);
while (hlen >= 3) {
switch (*opt) {
case TCPOPT_EOL:
break;
case TCPOPT_WINDOW:
wscale = opt[2];
- if (wscale > TCP_MAX_WINSHIFT)
+ if (wscale > TCP_MAX_WINSHIFT) {
wscale = TCP_MAX_WINSHIFT;
+ }
wscale |= PF_WSCALE_FLAG;
- /* FALLTHROUGH */
+ /* FALLTHROUGH */
default:
optlen = opt[1];
- if (optlen < 2)
+ if (optlen < 2) {
optlen = 2;
+ }
hlen -= optlen;
opt += optlen;
break;
}
}
- return (wscale);
+ return wscale;
}
static u_int16_t
-pf_get_mss(struct mbuf *m, int off, u_int16_t th_off, sa_family_t af)
+pf_get_mss(pbuf_t *pbuf, int off, u_int16_t th_off, sa_family_t af)
{
- int hlen;
- u_int8_t hdr[60];
- u_int8_t *opt, optlen;
- u_int16_t mss = tcp_mssdflt;
-
- hlen = th_off << 2; /* hlen <= sizeof (hdr) */
- if (hlen <= (int)sizeof (struct tcphdr))
- return (0);
- if (!pf_pull_hdr(m, off, hdr, hlen, NULL, NULL, af))
- return (0);
- opt = hdr + sizeof (struct tcphdr);
- hlen -= sizeof (struct tcphdr);
+ int hlen;
+ u_int8_t hdr[60];
+ u_int8_t *opt, optlen;
+ u_int16_t mss = tcp_mssdflt;
+
+ hlen = th_off << 2; /* hlen <= sizeof (hdr) */
+ if (hlen <= (int)sizeof(struct tcphdr)) {
+ return 0;
+ }
+ if (!pf_pull_hdr(pbuf, off, hdr, hlen, NULL, NULL, af)) {
+ return 0;
+ }
+ opt = hdr + sizeof(struct tcphdr);
+ hlen -= sizeof(struct tcphdr);
while (hlen >= TCPOLEN_MAXSEG) {
switch (*opt) {
case TCPOPT_EOL:
#if BYTE_ORDER != BIG_ENDIAN
NTOHS(mss);
#endif
- /* FALLTHROUGH */
+ /* FALLTHROUGH */
default:
optlen = opt[1];
- if (optlen < 2)
+ if (optlen < 2) {
optlen = 2;
+ }
hlen -= optlen;
opt += optlen;
break;
}
}
- return (mss);
+ return mss;
}
static u_int16_t
pf_calc_mss(struct pf_addr *addr, sa_family_t af, u_int16_t offer)
{
#if INET
- struct sockaddr_in *dst;
- struct route ro;
+ struct sockaddr_in *dst;
+ struct route ro;
#endif /* INET */
#if INET6
- struct sockaddr_in6 *dst6;
- struct route_in6 ro6;
+ struct sockaddr_in6 *dst6;
+ struct route_in6 ro6;
#endif /* INET6 */
- struct rtentry *rt = NULL;
- int hlen;
- u_int16_t mss = tcp_mssdflt;
+ struct rtentry *rt = NULL;
+ int hlen;
+ u_int16_t mss = tcp_mssdflt;
switch (af) {
#if INET
case AF_INET:
- hlen = sizeof (struct ip);
- bzero(&ro, sizeof (ro));
+ hlen = sizeof(struct ip);
+ bzero(&ro, sizeof(ro));
dst = (struct sockaddr_in *)(void *)&ro.ro_dst;
dst->sin_family = AF_INET;
- dst->sin_len = sizeof (*dst);
- dst->sin_addr = addr->v4;
+ dst->sin_len = sizeof(*dst);
+ dst->sin_addr = addr->v4addr;
rtalloc(&ro);
rt = ro.ro_rt;
break;
#endif /* INET */
#if INET6
case AF_INET6:
- hlen = sizeof (struct ip6_hdr);
- bzero(&ro6, sizeof (ro6));
+ hlen = sizeof(struct ip6_hdr);
+ bzero(&ro6, sizeof(ro6));
dst6 = (struct sockaddr_in6 *)(void *)&ro6.ro_dst;
dst6->sin6_family = AF_INET6;
- dst6->sin6_len = sizeof (*dst6);
- dst6->sin6_addr = addr->v6;
+ dst6->sin6_len = sizeof(*dst6);
+ dst6->sin6_addr = addr->v6addr;
rtalloc((struct route *)&ro);
rt = ro6.ro_rt;
break;
#endif /* INET6 */
default:
panic("pf_calc_mss: not AF_INET or AF_INET6!");
- return (0);
+ return 0;
}
if (rt && rt->rt_ifp) {
- mss = rt->rt_ifp->if_mtu - hlen - sizeof (struct tcphdr);
+ /* This is relevant only for PF SYN Proxy */
+ int interface_mtu = rt->rt_ifp->if_mtu;
+
+ if (af == AF_INET &&
+ INTF_ADJUST_MTU_FOR_CLAT46(rt->rt_ifp)) {
+ interface_mtu = IN6_LINKMTU(rt->rt_ifp);
+ /* Further adjust the size for CLAT46 expansion */
+ interface_mtu -= CLAT46_HDR_EXPANSION_OVERHD;
+ }
+ mss = interface_mtu - hlen - sizeof(struct tcphdr);
mss = max(tcp_mssdflt, mss);
rtfree(rt);
}
mss = min(mss, offer);
- mss = max(mss, 64); /* sanity - at least max opt space */
- return (mss);
+ mss = max(mss, 64); /* sanity - at least max opt space */
+ return mss;
}
static void
-pf_set_rt_ifp(struct pf_state *s, struct pf_addr *saddr)
+pf_set_rt_ifp(struct pf_state *s, struct pf_addr *saddr, sa_family_t af)
{
struct pf_rule *r = s->rule.ptr;
s->rt_kif = NULL;
- if (!r->rt || r->rt == PF_FASTROUTE)
+
+ if (!r->rt || r->rt == PF_FASTROUTE) {
return;
- switch (s->state_key->af) {
-#if INET
- case AF_INET:
- pf_map_addr(AF_INET, r, saddr, &s->rt_addr, NULL,
- &s->nat_src_node);
- s->rt_kif = r->rpool.cur->kif;
- break;
-#endif /* INET */
-#if INET6
- case AF_INET6:
- pf_map_addr(AF_INET6, r, saddr, &s->rt_addr, NULL,
+ }
+ if ((af == AF_INET) || (af == AF_INET6)) {
+ pf_map_addr(af, r, saddr, &s->rt_addr, NULL,
&s->nat_src_node);
s->rt_kif = r->rpool.cur->kif;
- break;
-#endif /* INET6 */
}
+
+ return;
}
static void
sk->refcnt++;
/* list is sorted, if-bound states before floating */
- if (tail)
+ if (tail) {
TAILQ_INSERT_TAIL(&sk->states, s, next);
- else
+ } else {
TAILQ_INSERT_HEAD(&sk->states, s, next);
+ }
}
static void
pf_detach_state(struct pf_state *s, int flags)
{
- struct pf_state_key *sk = s->state_key;
+ struct pf_state_key *sk = s->state_key;
- if (sk == NULL)
+ if (sk == NULL) {
return;
+ }
s->state_key = NULL;
TAILQ_REMOVE(&sk->states, s, next);
if (--sk->refcnt == 0) {
- if (!(flags & PF_DT_SKIP_EXTGWY))
+ if (!(flags & PF_DT_SKIP_EXTGWY)) {
RB_REMOVE(pf_state_tree_ext_gwy,
&pf_statetbl_ext_gwy, sk);
- if (!(flags & PF_DT_SKIP_LANEXT))
+ }
+ if (!(flags & PF_DT_SKIP_LANEXT)) {
RB_REMOVE(pf_state_tree_lan_ext,
&pf_statetbl_lan_ext, sk);
- if (sk->app_state)
+ }
+ if (sk->app_state) {
pool_put(&pf_app_state_pl, sk->app_state);
+ }
pool_put(&pf_state_key_pl, sk);
}
}
struct pf_state_key *
pf_alloc_state_key(struct pf_state *s, struct pf_state_key *psk)
{
- struct pf_state_key *sk;
+ struct pf_state_key *sk;
- if ((sk = pool_get(&pf_state_key_pl, PR_WAITOK)) == NULL)
- return (NULL);
- bzero(sk, sizeof (*sk));
+ if ((sk = pool_get(&pf_state_key_pl, PR_WAITOK)) == NULL) {
+ return NULL;
+ }
+ bzero(sk, sizeof(*sk));
TAILQ_INIT(&sk->states);
pf_attach_state(sk, s, 0);
/* initialize state key from psk, if provided */
if (psk != NULL) {
- bcopy(&psk->lan, &sk->lan, sizeof (sk->lan));
- bcopy(&psk->gwy, &sk->gwy, sizeof (sk->gwy));
- bcopy(&psk->ext, &sk->ext, sizeof (sk->ext));
- sk->af = psk->af;
+ bcopy(&psk->lan, &sk->lan, sizeof(sk->lan));
+ bcopy(&psk->gwy, &sk->gwy, sizeof(sk->gwy));
+ bcopy(&psk->ext_lan, &sk->ext_lan, sizeof(sk->ext_lan));
+ bcopy(&psk->ext_gwy, &sk->ext_gwy, sizeof(sk->ext_gwy));
+ sk->af_lan = psk->af_lan;
+ sk->af_gwy = psk->af_gwy;
sk->proto = psk->proto;
sk->direction = psk->direction;
sk->proto_variant = psk->proto_variant;
/* don't touch tree entries, states and refcnt on sk */
}
- return (sk);
+ return sk;
}
static u_int32_t
u_int32_t digest[4];
if (pf_tcp_secret_init == 0) {
- read_random(pf_tcp_secret, sizeof (pf_tcp_secret));
+ read_frandom(pf_tcp_secret, sizeof(pf_tcp_secret));
MD5Init(&pf_tcp_secret_ctx);
MD5Update(&pf_tcp_secret_ctx, pf_tcp_secret,
- sizeof (pf_tcp_secret));
+ sizeof(pf_tcp_secret));
pf_tcp_secret_init = 1;
}
ctx = pf_tcp_secret_ctx;
- MD5Update(&ctx, (char *)&pd->hdr.tcp->th_sport, sizeof (u_short));
- MD5Update(&ctx, (char *)&pd->hdr.tcp->th_dport, sizeof (u_short));
+ MD5Update(&ctx, (char *)&pd->hdr.tcp->th_sport, sizeof(u_short));
+ MD5Update(&ctx, (char *)&pd->hdr.tcp->th_dport, sizeof(u_short));
if (pd->af == AF_INET6) {
- MD5Update(&ctx, (char *)&pd->src->v6, sizeof (struct in6_addr));
- MD5Update(&ctx, (char *)&pd->dst->v6, sizeof (struct in6_addr));
+ MD5Update(&ctx, (char *)&pd->src->v6addr, sizeof(struct in6_addr));
+ MD5Update(&ctx, (char *)&pd->dst->v6addr, sizeof(struct in6_addr));
} else {
- MD5Update(&ctx, (char *)&pd->src->v4, sizeof (struct in_addr));
- MD5Update(&ctx, (char *)&pd->dst->v4, sizeof (struct in_addr));
+ MD5Update(&ctx, (char *)&pd->src->v4addr, sizeof(struct in_addr));
+ MD5Update(&ctx, (char *)&pd->dst->v4addr, sizeof(struct in_addr));
}
MD5Final((u_char *)digest, &ctx);
pf_tcp_iss_off += 4096;
- return (digest[0] + random() + pf_tcp_iss_off);
+ return digest[0] + random() + pf_tcp_iss_off;
}
+/*
+ * This routine is called to perform address family translation on the
+ * inner IP header (that may come as payload) of an ICMP(v4addr/6) error
+ * response.
+ */
static int
-pf_test_rule(struct pf_rule **rm, struct pf_state **sm, int direction,
- struct pfi_kif *kif, struct mbuf *m, int off, void *h,
- struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm,
- struct ifqueue *ifq)
+pf_change_icmp_af(pbuf_t *pbuf, int off,
+ struct pf_pdesc *pd, struct pf_pdesc *pd2, struct pf_addr *src,
+ struct pf_addr *dst, sa_family_t af, sa_family_t naf)
{
-#pragma unused(h)
- struct pf_rule *nr = NULL;
- struct pf_addr *saddr = pd->src, *daddr = pd->dst;
- sa_family_t af = pd->af;
- struct pf_rule *r, *a = NULL;
- struct pf_ruleset *ruleset = NULL;
- struct pf_src_node *nsn = NULL;
- struct tcphdr *th = pd->hdr.tcp;
- u_short reason;
- int rewrite = 0, hdrlen = 0;
- int tag = -1;
- unsigned int rtableid = IFSCOPE_NONE;
- int asd = 0;
- int match = 0;
- int state_icmp = 0;
- u_int16_t mss = tcp_mssdflt;
- u_int8_t icmptype = 0, icmpcode = 0;
-
- struct pf_grev1_hdr *grev1 = pd->hdr.grev1;
- union pf_state_xport bxport, nxport, sxport, dxport;
- struct pf_state_key psk;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ struct ip *ip4 = NULL;
+ struct ip6_hdr *ip6 = NULL;
+ void *hdr;
+ int hlen, olen;
- if (direction == PF_IN && pf_check_congestion(ifq)) {
- REASON_SET(&reason, PFRES_CONGEST);
- return (PF_DROP);
+ if (af == naf || (af != AF_INET && af != AF_INET6) ||
+ (naf != AF_INET && naf != AF_INET6)) {
+ return -1;
}
- hdrlen = 0;
- sxport.spi = 0;
- dxport.spi = 0;
- nxport.spi = 0;
-
- switch (pd->proto) {
- case IPPROTO_TCP:
- sxport.port = th->th_sport;
- dxport.port = th->th_dport;
- hdrlen = sizeof (*th);
- break;
- case IPPROTO_UDP:
- sxport.port = pd->hdr.udp->uh_sport;
- dxport.port = pd->hdr.udp->uh_dport;
- hdrlen = sizeof (*pd->hdr.udp);
- break;
-#if INET
- case IPPROTO_ICMP:
- if (pd->af != AF_INET)
- break;
- sxport.port = dxport.port = pd->hdr.icmp->icmp_id;
- hdrlen = ICMP_MINLEN;
- icmptype = pd->hdr.icmp->icmp_type;
- icmpcode = pd->hdr.icmp->icmp_code;
+ /* old header */
+ olen = pd2->off - off;
+ /* new header */
+ hlen = naf == AF_INET ? sizeof(*ip4) : sizeof(*ip6);
- if (icmptype == ICMP_UNREACH ||
- icmptype == ICMP_SOURCEQUENCH ||
- icmptype == ICMP_REDIRECT ||
- icmptype == ICMP_TIMXCEED ||
- icmptype == ICMP_PARAMPROB)
- state_icmp++;
- break;
-#endif /* INET */
-#if INET6
- case IPPROTO_ICMPV6:
- if (pd->af != AF_INET6)
- break;
- sxport.port = dxport.port = pd->hdr.icmp6->icmp6_id;
- hdrlen = sizeof (*pd->hdr.icmp6);
- icmptype = pd->hdr.icmp6->icmp6_type;
- icmpcode = pd->hdr.icmp6->icmp6_code;
+ /* Modify the pbuf to accommodate the new header */
+ hdr = pbuf_resize_segment(pbuf, off, olen, hlen);
+ if (hdr == NULL) {
+ return -1;
+ }
- if (icmptype == ICMP6_DST_UNREACH ||
- icmptype == ICMP6_PACKET_TOO_BIG ||
- icmptype == ICMP6_TIME_EXCEEDED ||
- icmptype == ICMP6_PARAM_PROB)
- state_icmp++;
- break;
-#endif /* INET6 */
- case IPPROTO_GRE:
- if (pd->proto_variant == PF_GRE_PPTP_VARIANT) {
- sxport.call_id = dxport.call_id =
- pd->hdr.grev1->call_id;
- hdrlen = sizeof (*pd->hdr.grev1);
+ /* translate inner ip/ip6 header */
+ switch (naf) {
+ case AF_INET:
+ ip4 = hdr;
+ bzero(ip4, sizeof(*ip4));
+ ip4->ip_v = IPVERSION;
+ ip4->ip_hl = sizeof(*ip4) >> 2;
+ ip4->ip_len = htons(sizeof(*ip4) + pd2->tot_len - olen);
+ ip4->ip_id = rfc6864 ? 0 : htons(ip_randomid());
+ ip4->ip_off = htons(IP_DF);
+ ip4->ip_ttl = pd2->ttl;
+ if (pd2->proto == IPPROTO_ICMPV6) {
+ ip4->ip_p = IPPROTO_ICMP;
+ } else {
+ ip4->ip_p = pd2->proto;
}
+ ip4->ip_src = src->v4addr;
+ ip4->ip_dst = dst->v4addr;
+ ip4->ip_sum = pbuf_inet_cksum(pbuf, 0, 0, ip4->ip_hl << 2);
break;
- case IPPROTO_ESP:
- sxport.spi = 0;
- dxport.spi = pd->hdr.esp->spi;
- hdrlen = sizeof (*pd->hdr.esp);
+ case AF_INET6:
+ ip6 = hdr;
+ bzero(ip6, sizeof(*ip6));
+ ip6->ip6_vfc = IPV6_VERSION;
+ ip6->ip6_plen = htons(pd2->tot_len - olen);
+ if (pd2->proto == IPPROTO_ICMP) {
+ ip6->ip6_nxt = IPPROTO_ICMPV6;
+ } else {
+ ip6->ip6_nxt = pd2->proto;
+ }
+ if (!pd2->ttl || pd2->ttl > IPV6_DEFHLIM) {
+ ip6->ip6_hlim = IPV6_DEFHLIM;
+ } else {
+ ip6->ip6_hlim = pd2->ttl;
+ }
+ ip6->ip6_src = src->v6addr;
+ ip6->ip6_dst = dst->v6addr;
break;
}
- r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
+ /* adjust payload offset and total packet length */
+ pd2->off += hlen - olen;
+ pd->tot_len += hlen - olen;
- if (direction == PF_OUT) {
- bxport = nxport = sxport;
- /* check outgoing packet for BINAT/NAT */
- if ((nr = pf_get_translation_aux(pd, m, off, PF_OUT, kif, &nsn,
- saddr, &sxport, daddr, &dxport, &pd->naddr, &nxport)) !=
- NULL) {
- PF_ACPY(&pd->baddr, saddr, af);
- switch (pd->proto) {
- case IPPROTO_TCP:
- pf_change_ap(direction, pd->mp, saddr,
- &th->th_sport, pd->ip_sum, &th->th_sum,
- &pd->naddr, nxport.port, 0, af);
- sxport.port = th->th_sport;
- rewrite++;
+ return 0;
+}
+
+#define PTR_IP(field) ((int32_t)offsetof(struct ip, field))
+#define PTR_IP6(field) ((int32_t)offsetof(struct ip6_hdr, field))
+
+static int
+pf_translate_icmp_af(int af, void *arg)
+{
+ struct icmp *icmp4;
+ struct icmp6_hdr *icmp6;
+ u_int32_t mtu;
+ int32_t ptr = -1;
+ u_int8_t type;
+ u_int8_t code;
+
+ switch (af) {
+ case AF_INET:
+ icmp6 = arg;
+ type = icmp6->icmp6_type;
+ code = icmp6->icmp6_code;
+ mtu = ntohl(icmp6->icmp6_mtu);
+
+ switch (type) {
+ case ICMP6_ECHO_REQUEST:
+ type = ICMP_ECHO;
+ break;
+ case ICMP6_ECHO_REPLY:
+ type = ICMP_ECHOREPLY;
+ break;
+ case ICMP6_DST_UNREACH:
+ type = ICMP_UNREACH;
+ switch (code) {
+ case ICMP6_DST_UNREACH_NOROUTE:
+ case ICMP6_DST_UNREACH_BEYONDSCOPE:
+ case ICMP6_DST_UNREACH_ADDR:
+ code = ICMP_UNREACH_HOST;
break;
- case IPPROTO_UDP:
- pf_change_ap(direction, pd->mp, saddr,
- &pd->hdr.udp->uh_sport, pd->ip_sum,
- &pd->hdr.udp->uh_sum, &pd->naddr,
- nxport.port, 1, af);
- sxport.port = pd->hdr.udp->uh_sport;
- rewrite++;
+ case ICMP6_DST_UNREACH_ADMIN:
+ code = ICMP_UNREACH_HOST_PROHIB;
break;
-#if INET
- case IPPROTO_ICMP:
- if (pd->af == AF_INET) {
- pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
- pd->naddr.v4.s_addr, 0);
- pd->hdr.icmp->icmp_cksum = pf_cksum_fixup(
- pd->hdr.icmp->icmp_cksum, sxport.port,
- nxport.port, 0);
- pd->hdr.icmp->icmp_id = nxport.port;
- ++rewrite;
- }
+ case ICMP6_DST_UNREACH_NOPORT:
+ code = ICMP_UNREACH_PORT;
break;
-#endif /* INET */
-#if INET6
- case IPPROTO_ICMPV6:
- if (pd->af == AF_INET6) {
- pf_change_a6(saddr, &pd->hdr.icmp6->icmp6_cksum,
- &pd->naddr, 0);
- rewrite++;
+ default:
+ return -1;
+ }
+ break;
+ case ICMP6_PACKET_TOO_BIG:
+ type = ICMP_UNREACH;
+ code = ICMP_UNREACH_NEEDFRAG;
+ mtu -= 20;
+ break;
+ case ICMP6_TIME_EXCEEDED:
+ type = ICMP_TIMXCEED;
+ break;
+ case ICMP6_PARAM_PROB:
+ switch (code) {
+ case ICMP6_PARAMPROB_HEADER:
+ type = ICMP_PARAMPROB;
+ code = ICMP_PARAMPROB_ERRATPTR;
+ ptr = ntohl(icmp6->icmp6_pptr);
+
+ if (ptr == PTR_IP6(ip6_vfc)) {
+ ; /* preserve */
+ } else if (ptr == PTR_IP6(ip6_vfc) + 1) {
+ ptr = PTR_IP(ip_tos);
+ } else if (ptr == PTR_IP6(ip6_plen) ||
+ ptr == PTR_IP6(ip6_plen) + 1) {
+ ptr = PTR_IP(ip_len);
+ } else if (ptr == PTR_IP6(ip6_nxt)) {
+ ptr = PTR_IP(ip_p);
+ } else if (ptr == PTR_IP6(ip6_hlim)) {
+ ptr = PTR_IP(ip_ttl);
+ } else if (ptr >= PTR_IP6(ip6_src) &&
+ ptr < PTR_IP6(ip6_dst)) {
+ ptr = PTR_IP(ip_src);
+ } else if (ptr >= PTR_IP6(ip6_dst) &&
+ ptr < (int32_t)sizeof(struct ip6_hdr)) {
+ ptr = PTR_IP(ip_dst);
+ } else {
+ return -1;
}
break;
-#endif /* INET */
- case IPPROTO_GRE:
- switch (af) {
-#if INET
- case AF_INET:
- pf_change_a(&saddr->v4.s_addr,
- pd->ip_sum, pd->naddr.v4.s_addr, 0);
- break;
-#endif /* INET */
-#if INET6
- case AF_INET6:
- PF_ACPY(saddr, &pd->naddr, AF_INET6);
- break;
-#endif /* INET6 */
- }
- ++rewrite;
+ case ICMP6_PARAMPROB_NEXTHEADER:
+ type = ICMP_UNREACH;
+ code = ICMP_UNREACH_PROTOCOL;
break;
- case IPPROTO_ESP:
- bxport.spi = 0;
- switch (af) {
-#if INET
- case AF_INET:
- pf_change_a(&saddr->v4.s_addr,
- pd->ip_sum, pd->naddr.v4.s_addr, 0);
- break;
-#endif /* INET */
-#if INET6
- case AF_INET6:
- PF_ACPY(saddr, &pd->naddr, AF_INET6);
- break;
-#endif /* INET6 */
- }
+ default:
+ return -1;
+ }
+ break;
+ default:
+ return -1;
+ }
+ icmp6->icmp6_type = type;
+ icmp6->icmp6_code = code;
+ /* aligns well with a icmpv4 nextmtu */
+ icmp6->icmp6_mtu = htonl(mtu);
+ /* icmpv4 pptr is a one most significant byte */
+ if (ptr >= 0) {
+ icmp6->icmp6_pptr = htonl(ptr << 24);
+ }
+ break;
+
+ case AF_INET6:
+ icmp4 = arg;
+ type = icmp4->icmp_type;
+ code = icmp4->icmp_code;
+ mtu = ntohs(icmp4->icmp_nextmtu);
+
+ switch (type) {
+ case ICMP_ECHO:
+ type = ICMP6_ECHO_REQUEST;
+ break;
+ case ICMP_ECHOREPLY:
+ type = ICMP6_ECHO_REPLY;
+ break;
+ case ICMP_UNREACH:
+ type = ICMP6_DST_UNREACH;
+ switch (code) {
+ case ICMP_UNREACH_NET:
+ case ICMP_UNREACH_HOST:
+ case ICMP_UNREACH_NET_UNKNOWN:
+ case ICMP_UNREACH_HOST_UNKNOWN:
+ case ICMP_UNREACH_ISOLATED:
+ case ICMP_UNREACH_TOSNET:
+ case ICMP_UNREACH_TOSHOST:
+ code = ICMP6_DST_UNREACH_NOROUTE;
+ break;
+ case ICMP_UNREACH_PORT:
+ code = ICMP6_DST_UNREACH_NOPORT;
+ break;
+ case ICMP_UNREACH_NET_PROHIB:
+ case ICMP_UNREACH_HOST_PROHIB:
+ case ICMP_UNREACH_FILTER_PROHIB:
+ case ICMP_UNREACH_PRECEDENCE_CUTOFF:
+ code = ICMP6_DST_UNREACH_ADMIN;
+ break;
+ case ICMP_UNREACH_PROTOCOL:
+ type = ICMP6_PARAM_PROB;
+ code = ICMP6_PARAMPROB_NEXTHEADER;
+ ptr = offsetof(struct ip6_hdr, ip6_nxt);
+ break;
+ case ICMP_UNREACH_NEEDFRAG:
+ type = ICMP6_PACKET_TOO_BIG;
+ code = 0;
+ mtu += 20;
break;
default:
- switch (af) {
+ return -1;
+ }
+ break;
+ case ICMP_TIMXCEED:
+ type = ICMP6_TIME_EXCEEDED;
+ break;
+ case ICMP_PARAMPROB:
+ type = ICMP6_PARAM_PROB;
+ switch (code) {
+ case ICMP_PARAMPROB_ERRATPTR:
+ code = ICMP6_PARAMPROB_HEADER;
+ break;
+ case ICMP_PARAMPROB_LENGTH:
+ code = ICMP6_PARAMPROB_HEADER;
+ break;
+ default:
+ return -1;
+ }
+
+ ptr = icmp4->icmp_pptr;
+ if (ptr == 0 || ptr == PTR_IP(ip_tos)) {
+ ; /* preserve */
+ } else if (ptr == PTR_IP(ip_len) ||
+ ptr == PTR_IP(ip_len) + 1) {
+ ptr = PTR_IP6(ip6_plen);
+ } else if (ptr == PTR_IP(ip_ttl)) {
+ ptr = PTR_IP6(ip6_hlim);
+ } else if (ptr == PTR_IP(ip_p)) {
+ ptr = PTR_IP6(ip6_nxt);
+ } else if (ptr >= PTR_IP(ip_src) &&
+ ptr < PTR_IP(ip_dst)) {
+ ptr = PTR_IP6(ip6_src);
+ } else if (ptr >= PTR_IP(ip_dst) &&
+ ptr < (int32_t)sizeof(struct ip)) {
+ ptr = PTR_IP6(ip6_dst);
+ } else {
+ return -1;
+ }
+ break;
+ default:
+ return -1;
+ }
+ icmp4->icmp_type = type;
+ icmp4->icmp_code = code;
+ icmp4->icmp_nextmtu = htons(mtu);
+ if (ptr >= 0) {
+ icmp4->icmp_void = htonl(ptr);
+ }
+ break;
+ }
+
+ return 0;
+}
+
+/* Note: frees pbuf if PF_NAT64 is returned */
+static int
+pf_nat64_ipv6(pbuf_t *pbuf, int off, struct pf_pdesc *pd)
+{
+ struct ip *ip4;
+ struct mbuf *m;
+
+ /*
+ * ip_input asserts for rcvif to be not NULL
+ * That may not be true for two corner cases
+ * 1. If for some reason a local app sends DNS
+ * AAAA query to local host
+ * 2. If IPv6 stack in kernel internally generates a
+ * message destined for a synthesized IPv6 end-point.
+ */
+ if (pbuf->pb_ifp == NULL) {
+ return PF_DROP;
+ }
+
+ ip4 = (struct ip *)pbuf_resize_segment(pbuf, 0, off, sizeof(*ip4));
+ if (ip4 == NULL) {
+ return PF_DROP;
+ }
+
+ ip4->ip_v = 4;
+ ip4->ip_hl = 5;
+ ip4->ip_tos = pd->tos & htonl(0x0ff00000);
+ ip4->ip_len = htons(sizeof(*ip4) + (pd->tot_len - off));
+ ip4->ip_id = 0;
+ ip4->ip_off = htons(IP_DF);
+ ip4->ip_ttl = pd->ttl;
+ ip4->ip_p = pd->proto;
+ ip4->ip_sum = 0;
+ ip4->ip_src = pd->naddr.v4addr;
+ ip4->ip_dst = pd->ndaddr.v4addr;
+ ip4->ip_sum = pbuf_inet_cksum(pbuf, 0, 0, ip4->ip_hl << 2);
+
+ /* recalculate icmp checksums */
+ if (pd->proto == IPPROTO_ICMP) {
+ struct icmp *icmp;
+ int hlen = sizeof(*ip4);
+
+ icmp = (struct icmp *)pbuf_contig_segment(pbuf, hlen,
+ ICMP_MINLEN);
+ if (icmp == NULL) {
+ return PF_DROP;
+ }
+
+ icmp->icmp_cksum = 0;
+ icmp->icmp_cksum = pbuf_inet_cksum(pbuf, 0, hlen,
+ ntohs(ip4->ip_len) - hlen);
+ }
+
+ if ((m = pbuf_to_mbuf(pbuf, TRUE)) != NULL) {
+ ip_input(m);
+ }
+
+ return PF_NAT64;
+}
+
+static int
+pf_nat64_ipv4(pbuf_t *pbuf, int off, struct pf_pdesc *pd)
+{
+ struct ip6_hdr *ip6;
+ struct mbuf *m;
+
+ if (pbuf->pb_ifp == NULL) {
+ return PF_DROP;
+ }
+
+ ip6 = (struct ip6_hdr *)pbuf_resize_segment(pbuf, 0, off, sizeof(*ip6));
+ if (ip6 == NULL) {
+ return PF_DROP;
+ }
+
+ ip6->ip6_vfc = htonl((6 << 28) | (pd->tos << 20));
+ ip6->ip6_plen = htons(pd->tot_len - off);
+ ip6->ip6_nxt = pd->proto;
+ ip6->ip6_hlim = pd->ttl;
+ ip6->ip6_src = pd->naddr.v6addr;
+ ip6->ip6_dst = pd->ndaddr.v6addr;
+
+ /* recalculate icmp6 checksums */
+ if (pd->proto == IPPROTO_ICMPV6) {
+ struct icmp6_hdr *icmp6;
+ int hlen = sizeof(*ip6);
+
+ icmp6 = (struct icmp6_hdr *)pbuf_contig_segment(pbuf, hlen,
+ sizeof(*icmp6));
+ if (icmp6 == NULL) {
+ return PF_DROP;
+ }
+
+ icmp6->icmp6_cksum = 0;
+ icmp6->icmp6_cksum = pbuf_inet6_cksum(pbuf,
+ IPPROTO_ICMPV6, hlen,
+ ntohs(ip6->ip6_plen));
+ } else if (pd->proto == IPPROTO_UDP) {
+ struct udphdr *uh;
+ int hlen = sizeof(*ip6);
+
+ uh = (struct udphdr *)pbuf_contig_segment(pbuf, hlen,
+ sizeof(*uh));
+ if (uh == NULL) {
+ return PF_DROP;
+ }
+
+ if (uh->uh_sum == 0) {
+ uh->uh_sum = pbuf_inet6_cksum(pbuf, IPPROTO_UDP,
+ hlen, ntohs(ip6->ip6_plen));
+ }
+ }
+
+ if ((m = pbuf_to_mbuf(pbuf, TRUE)) != NULL) {
+ ip6_input(m);
+ }
+
+ return PF_NAT64;
+}
+
+static int
+pf_test_rule(struct pf_rule **rm, struct pf_state **sm, int direction,
+ struct pfi_kif *kif, pbuf_t *pbuf, int off, void *h,
+ struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm,
+ struct ifqueue *ifq)
+{
+#pragma unused(h)
+ struct pf_rule *nr = NULL;
+ struct pf_addr *saddr = pd->src, *daddr = pd->dst;
+ sa_family_t af = pd->af;
+ struct pf_rule *r, *a = NULL;
+ struct pf_ruleset *ruleset = NULL;
+ struct pf_src_node *nsn = NULL;
+ struct tcphdr *th = pd->hdr.tcp;
+ struct udphdr *uh = pd->hdr.udp;
+ u_short reason;
+ int rewrite = 0, hdrlen = 0;
+ int tag = -1;
+ unsigned int rtableid = IFSCOPE_NONE;
+ int asd = 0;
+ int match = 0;
+ int state_icmp = 0;
+ u_int16_t mss = tcp_mssdflt;
+ u_int8_t icmptype = 0, icmpcode = 0;
+
+ struct pf_grev1_hdr *grev1 = pd->hdr.grev1;
+ union pf_state_xport bxport, bdxport, nxport, sxport, dxport;
+ struct pf_state_key psk;
+
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ if (direction == PF_IN && pf_check_congestion(ifq)) {
+ REASON_SET(&reason, PFRES_CONGEST);
+ return PF_DROP;
+ }
+
+ hdrlen = 0;
+ sxport.spi = 0;
+ dxport.spi = 0;
+ nxport.spi = 0;
+
+ switch (pd->proto) {
+ case IPPROTO_TCP:
+ sxport.port = th->th_sport;
+ dxport.port = th->th_dport;
+ hdrlen = sizeof(*th);
+ break;
+ case IPPROTO_UDP:
+ sxport.port = uh->uh_sport;
+ dxport.port = uh->uh_dport;
+ hdrlen = sizeof(*uh);
+ break;
#if INET
- case AF_INET:
- pf_change_a(&saddr->v4.s_addr,
- pd->ip_sum, pd->naddr.v4.s_addr, 0);
- break;
+ case IPPROTO_ICMP:
+ if (pd->af != AF_INET) {
+ break;
+ }
+ sxport.port = dxport.port = pd->hdr.icmp->icmp_id;
+ hdrlen = ICMP_MINLEN;
+ icmptype = pd->hdr.icmp->icmp_type;
+ icmpcode = pd->hdr.icmp->icmp_code;
+
+ if (ICMP_ERRORTYPE(icmptype)) {
+ state_icmp++;
+ }
+ break;
#endif /* INET */
#if INET6
- case AF_INET6:
- PF_ACPY(saddr, &pd->naddr, af);
- break;
-#endif /* INET */
- }
- break;
- }
+ case IPPROTO_ICMPV6:
+ if (pd->af != AF_INET6) {
+ break;
+ }
+ sxport.port = dxport.port = pd->hdr.icmp6->icmp6_id;
+ hdrlen = sizeof(*pd->hdr.icmp6);
+ icmptype = pd->hdr.icmp6->icmp6_type;
+ icmpcode = pd->hdr.icmp6->icmp6_code;
- if (nr->natpass)
- r = NULL;
- pd->nat_rule = nr;
+ if (ICMP6_ERRORTYPE(icmptype)) {
+ state_icmp++;
}
+ break;
+#endif /* INET6 */
+ case IPPROTO_GRE:
+ if (pd->proto_variant == PF_GRE_PPTP_VARIANT) {
+ sxport.call_id = dxport.call_id =
+ pd->hdr.grev1->call_id;
+ hdrlen = sizeof(*pd->hdr.grev1);
+ }
+ break;
+ case IPPROTO_ESP:
+ sxport.spi = 0;
+ dxport.spi = pd->hdr.esp->spi;
+ hdrlen = sizeof(*pd->hdr.esp);
+ break;
+ }
+
+ r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
+
+ bxport = sxport;
+ bdxport = dxport;
+
+ if (direction == PF_OUT) {
+ nxport = sxport;
} else {
- bxport.port = nxport.port = dxport.port;
- /* check incoming packet for BINAT/RDR */
- if ((nr = pf_get_translation_aux(pd, m, off, PF_IN, kif, &nsn,
- saddr, &sxport, daddr, &dxport, &pd->naddr, &nxport)) !=
- NULL) {
- PF_ACPY(&pd->baddr, daddr, af);
- switch (pd->proto) {
- case IPPROTO_TCP:
+ nxport = dxport;
+ }
+
+ /* check packet for BINAT/NAT/RDR */
+ if ((nr = pf_get_translation_aux(pd, pbuf, off, direction, kif, &nsn,
+ saddr, &sxport, daddr, &dxport, &nxport
+ )) != NULL) {
+ int ua;
+ u_int16_t dport;
+
+ if (pd->af != pd->naf) {
+ ua = 0;
+ } else {
+ ua = 1;
+ }
+
+ PF_ACPY(&pd->baddr, saddr, af);
+ PF_ACPY(&pd->bdaddr, daddr, af);
+
+ switch (pd->proto) {
+ case IPPROTO_TCP:
+ if (pd->af != pd->naf ||
+ PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ pf_change_ap(direction, pd->mp, saddr,
+ &th->th_sport, pd->ip_sum, &th->th_sum,
+ &pd->naddr, nxport.port, 0, af,
+ pd->naf, ua);
+ sxport.port = th->th_sport;
+ }
+
+ if (pd->af != pd->naf ||
+ PF_ANEQ(daddr, &pd->ndaddr, pd->af) ||
+ (nr && (nr->action == PF_RDR) &&
+ (th->th_dport != nxport.port))) {
+ if (nr && nr->action == PF_RDR) {
+ dport = nxport.port;
+ } else {
+ dport = th->th_dport;
+ }
pf_change_ap(direction, pd->mp, daddr,
- &th->th_dport, pd->ip_sum, &th->th_sum,
- &pd->naddr, nxport.port, 0, af);
+ &th->th_dport, pd->ip_sum,
+ &th->th_sum, &pd->ndaddr,
+ dport, 0, af, pd->naf, ua);
dxport.port = th->th_dport;
- rewrite++;
- break;
- case IPPROTO_UDP:
+ }
+ rewrite++;
+ break;
+
+ case IPPROTO_UDP:
+ if (pd->af != pd->naf ||
+ PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ pf_change_ap(direction, pd->mp, saddr,
+ &uh->uh_sport, pd->ip_sum,
+ &uh->uh_sum, &pd->naddr,
+ nxport.port, 1, af, pd->naf, ua);
+ sxport.port = uh->uh_sport;
+ }
+
+ if (pd->af != pd->naf ||
+ PF_ANEQ(daddr, &pd->ndaddr, pd->af) ||
+ (nr && (nr->action == PF_RDR) &&
+ (uh->uh_dport != nxport.port))) {
+ if (nr && nr->action == PF_RDR) {
+ dport = nxport.port;
+ } else {
+ dport = uh->uh_dport;
+ }
pf_change_ap(direction, pd->mp, daddr,
- &pd->hdr.udp->uh_dport, pd->ip_sum,
- &pd->hdr.udp->uh_sum, &pd->naddr,
- nxport.port, 1, af);
- dxport.port = pd->hdr.udp->uh_dport;
- rewrite++;
+ &uh->uh_dport, pd->ip_sum,
+ &uh->uh_sum, &pd->ndaddr,
+ dport, 0, af, pd->naf, ua);
+ dxport.port = uh->uh_dport;
+ }
+ rewrite++;
+ break;
+#if INET
+ case IPPROTO_ICMP:
+ if (pd->af != AF_INET) {
break;
+ }
+ /*
+ * TODO:
+ * pd->af != pd->naf not handled yet here and would be
+ * needed for NAT46 needed to support XLAT.
+ * Will cross the bridge when it comes.
+ */
+ if (PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ pf_change_a(&saddr->v4addr.s_addr, pd->ip_sum,
+ pd->naddr.v4addr.s_addr, 0);
+ pd->hdr.icmp->icmp_cksum = pf_cksum_fixup(
+ pd->hdr.icmp->icmp_cksum, sxport.port,
+ nxport.port, 0);
+ pd->hdr.icmp->icmp_id = nxport.port;
+ }
+
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ pf_change_a(&daddr->v4addr.s_addr, pd->ip_sum,
+ pd->ndaddr.v4addr.s_addr, 0);
+ }
+ ++rewrite;
+ break;
+#endif /* INET */
+#if INET6
+ case IPPROTO_ICMPV6:
+ if (pd->af != AF_INET6) {
+ break;
+ }
+
+ if (pd->af != pd->naf ||
+ PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ pf_change_addr(saddr,
+ &pd->hdr.icmp6->icmp6_cksum,
+ &pd->naddr, 0, pd->af, pd->naf);
+ }
+
+ if (pd->af != pd->naf ||
+ PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ pf_change_addr(daddr,
+ &pd->hdr.icmp6->icmp6_cksum,
+ &pd->ndaddr, 0, pd->af, pd->naf);
+ }
+
+ if (pd->af != pd->naf) {
+ if (pf_translate_icmp_af(AF_INET,
+ pd->hdr.icmp6)) {
+ return PF_DROP;
+ }
+ pd->proto = IPPROTO_ICMP;
+ }
+ rewrite++;
+ break;
+#endif /* INET */
+ case IPPROTO_GRE:
+ if ((direction == PF_IN) &&
+ (pd->proto_variant == PF_GRE_PPTP_VARIANT)) {
+ grev1->call_id = nxport.call_id;
+ }
+
+ switch (pd->af) {
#if INET
- case IPPROTO_ICMP:
- if (pd->af == AF_INET) {
- pf_change_a(&daddr->v4.s_addr, pd->ip_sum,
- pd->naddr.v4.s_addr, 0);
+ case AF_INET:
+ if (PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ pf_change_a(&saddr->v4addr.s_addr,
+ pd->ip_sum,
+ pd->naddr.v4addr.s_addr, 0);
+ }
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ pf_change_a(&daddr->v4addr.s_addr,
+ pd->ip_sum,
+ pd->ndaddr.v4addr.s_addr, 0);
}
break;
#endif /* INET */
#if INET6
- case IPPROTO_ICMPV6:
- if (pd->af == AF_INET6) {
- pf_change_a6(daddr, &pd->hdr.icmp6->icmp6_cksum,
- &pd->naddr, 0);
- rewrite++;
+ case AF_INET6:
+ if (PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ PF_ACPY(saddr, &pd->naddr, AF_INET6);
+ }
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ PF_ACPY(daddr, &pd->ndaddr, AF_INET6);
}
break;
#endif /* INET6 */
- case IPPROTO_GRE:
- if (pd->proto_variant == PF_GRE_PPTP_VARIANT)
- grev1->call_id = nxport.call_id;
+ }
+ ++rewrite;
+ break;
+ case IPPROTO_ESP:
+ if (direction == PF_OUT) {
+ bxport.spi = 0;
+ }
- switch (af) {
+ switch (pd->af) {
#if INET
- case AF_INET:
- pf_change_a(&daddr->v4.s_addr,
- pd->ip_sum, pd->naddr.v4.s_addr, 0);
- break;
-#endif /* INET */
-#if INET6
- case AF_INET6:
- PF_ACPY(daddr, &pd->naddr, AF_INET6);
- break;
-#endif /* INET6 */
+ case AF_INET:
+ if (PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ pf_change_a(&saddr->v4addr.s_addr,
+ pd->ip_sum, pd->naddr.v4addr.s_addr, 0);
+ }
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ pf_change_a(&daddr->v4addr.s_addr,
+ pd->ip_sum,
+ pd->ndaddr.v4addr.s_addr, 0);
}
- ++rewrite;
break;
- case IPPROTO_ESP:
- switch (af) {
-#if INET
- case AF_INET:
- pf_change_a(&daddr->v4.s_addr,
- pd->ip_sum, pd->naddr.v4.s_addr, 0);
- break;
#endif /* INET */
#if INET6
- case AF_INET6:
- PF_ACPY(daddr, &pd->naddr, AF_INET6);
- break;
-#endif /* INET6 */
+ case AF_INET6:
+ if (PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ PF_ACPY(saddr, &pd->naddr, AF_INET6);
+ }
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ PF_ACPY(daddr, &pd->ndaddr, AF_INET6);
}
break;
- default:
- switch (af) {
+#endif /* INET6 */
+ }
+ break;
+ default:
+ switch (pd->af) {
#if INET
- case AF_INET:
- pf_change_a(&daddr->v4.s_addr,
- pd->ip_sum, pd->naddr.v4.s_addr, 0);
- break;
+ case AF_INET:
+ if ((pd->naf != AF_INET) ||
+ (PF_ANEQ(saddr, &pd->naddr, pd->af))) {
+ pf_change_addr(saddr, pd->ip_sum,
+ &pd->naddr, 0, af, pd->naf);
+ }
+
+ if ((pd->naf != AF_INET) ||
+ (PF_ANEQ(daddr, &pd->ndaddr, pd->af))) {
+ pf_change_addr(daddr, pd->ip_sum,
+ &pd->ndaddr, 0, af, pd->naf);
+ }
+ break;
#endif /* INET */
#if INET6
- case AF_INET6:
- PF_ACPY(daddr, &pd->naddr, af);
- break;
-#endif /* INET */
+ case AF_INET6:
+ if (PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ PF_ACPY(saddr, &pd->naddr, af);
+ }
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ PF_ACPY(daddr, &pd->ndaddr, af);
}
break;
+#endif /* INET */
}
+ break;
+ }
- if (nr->natpass)
- r = NULL;
- pd->nat_rule = nr;
+ if (nr->natpass) {
+ r = NULL;
}
+ pd->nat_rule = nr;
+ pd->af = pd->naf;
+ } else {
}
- if (nr && nr->tag > 0)
+ if (nr && nr->tag > 0) {
tag = nr->tag;
+ }
while (r != NULL) {
r->evaluations++;
- if (pfi_kif_match(r->kif, kif) == r->ifnot)
+ if (pfi_kif_match(r->kif, kif) == r->ifnot) {
r = r->skip[PF_SKIP_IFP].ptr;
- else if (r->direction && r->direction != direction)
+ } else if (r->direction && r->direction != direction) {
r = r->skip[PF_SKIP_DIR].ptr;
- else if (r->af && r->af != af)
+ } else if (r->af && r->af != pd->af) {
r = r->skip[PF_SKIP_AF].ptr;
- else if (r->proto && r->proto != pd->proto)
+ } else if (r->proto && r->proto != pd->proto) {
r = r->skip[PF_SKIP_PROTO].ptr;
- else if (PF_MISMATCHAW(&r->src.addr, saddr, af,
- r->src.neg, kif))
+ } else if (PF_MISMATCHAW(&r->src.addr, saddr, pd->af,
+ r->src.neg, kif)) {
r = r->skip[PF_SKIP_SRC_ADDR].ptr;
+ }
/* tcp/udp only. port_op always 0 in other cases */
else if (r->proto == pd->proto &&
(r->proto == IPPROTO_TCP || r->proto == IPPROTO_UDP) &&
r->src.xport.range.op &&
!pf_match_port(r->src.xport.range.op,
r->src.xport.range.port[0], r->src.xport.range.port[1],
- th->th_sport))
+ th->th_sport)) {
r = r->skip[PF_SKIP_SRC_PORT].ptr;
- else if (PF_MISMATCHAW(&r->dst.addr, daddr, af,
- r->dst.neg, NULL))
+ } else if (PF_MISMATCHAW(&r->dst.addr, daddr, pd->af,
+ r->dst.neg, NULL)) {
r = r->skip[PF_SKIP_DST_ADDR].ptr;
+ }
/* tcp/udp only. port_op always 0 in other cases */
else if (r->proto == pd->proto &&
(r->proto == IPPROTO_TCP || r->proto == IPPROTO_UDP) &&
r->dst.xport.range.op &&
!pf_match_port(r->dst.xport.range.op,
r->dst.xport.range.port[0], r->dst.xport.range.port[1],
- th->th_dport))
+ th->th_dport)) {
r = r->skip[PF_SKIP_DST_PORT].ptr;
+ }
/* icmp only. type always 0 in other cases */
- else if (r->type && r->type != icmptype + 1)
+ else if (r->type && r->type != icmptype + 1) {
r = TAILQ_NEXT(r, entries);
+ }
/* icmp only. type always 0 in other cases */
- else if (r->code && r->code != icmpcode + 1)
+ else if (r->code && r->code != icmpcode + 1) {
r = TAILQ_NEXT(r, entries);
- else if ((r->rule_flag & PFRULE_TOS) && r->tos &&
- !(r->tos & pd->tos))
+ } else if ((r->rule_flag & PFRULE_TOS) && r->tos &&
+ !(r->tos & pd->tos)) {
r = TAILQ_NEXT(r, entries);
- else if ((r->rule_flag & PFRULE_DSCP) && r->tos &&
- !(r->tos & (pd->tos & DSCP_MASK)))
+ } else if ((r->rule_flag & PFRULE_DSCP) && r->tos &&
+ !(r->tos & (pd->tos & DSCP_MASK))) {
r = TAILQ_NEXT(r, entries);
- else if ((r->rule_flag & PFRULE_SC) && r->tos &&
- ((r->tos & SCIDX_MASK) != pd->sc))
+ } else if ((r->rule_flag & PFRULE_SC) && r->tos &&
+ ((r->tos & SCIDX_MASK) != pd->sc)) {
r = TAILQ_NEXT(r, entries);
- else if (r->rule_flag & PFRULE_FRAGMENT)
+ } else if (r->rule_flag & PFRULE_FRAGMENT) {
r = TAILQ_NEXT(r, entries);
- else if (pd->proto == IPPROTO_TCP &&
- (r->flagset & th->th_flags) != r->flags)
+ } else if (pd->proto == IPPROTO_TCP &&
+ (r->flagset & th->th_flags) != r->flags) {
r = TAILQ_NEXT(r, entries);
+ }
/* tcp/udp only. uid.op always 0 in other cases */
- else if (r->uid.op && (pd->lookup.done || (pd->lookup.done =
- pf_socket_lookup(direction, pd), 1)) &&
+ else if (r->uid.op && (pd->lookup.done || ((void)(pd->lookup.done =
+ pf_socket_lookup(direction, pd)), 1)) &&
!pf_match_uid(r->uid.op, r->uid.uid[0], r->uid.uid[1],
- pd->lookup.uid))
+ pd->lookup.uid)) {
r = TAILQ_NEXT(r, entries);
+ }
/* tcp/udp only. gid.op always 0 in other cases */
- else if (r->gid.op && (pd->lookup.done || (pd->lookup.done =
- pf_socket_lookup(direction, pd), 1)) &&
+ else if (r->gid.op && (pd->lookup.done || ((void)(pd->lookup.done =
+ pf_socket_lookup(direction, pd)), 1)) &&
!pf_match_gid(r->gid.op, r->gid.gid[0], r->gid.gid[1],
- pd->lookup.gid))
+ pd->lookup.gid)) {
r = TAILQ_NEXT(r, entries);
- else if (r->prob && r->prob <= (RandomULong() % (UINT_MAX - 1) + 1))
+ } else if (r->prob && r->prob <= (RandomULong() % (UINT_MAX - 1) + 1)) {
r = TAILQ_NEXT(r, entries);
- else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+ } else if (r->match_tag && !pf_match_tag(r, pd->pf_mtag, &tag)) {
r = TAILQ_NEXT(r, entries);
- else if (r->os_fingerprint != PF_OSFP_ANY &&
+ } else if (r->os_fingerprint != PF_OSFP_ANY &&
(pd->proto != IPPROTO_TCP || !pf_osfp_match(
- pf_osfp_fingerprint(pd, m, off, th),
- r->os_fingerprint)))
+ pf_osfp_fingerprint(pd, pbuf, off, th),
+ r->os_fingerprint))) {
r = TAILQ_NEXT(r, entries);
- else {
- if (r->tag)
+ } else {
+ if (r->tag) {
tag = r->tag;
- if (PF_RTABLEID_IS_VALID(r->rtableid))
+ }
+ if (PF_RTABLEID_IS_VALID(r->rtableid)) {
rtableid = r->rtableid;
+ }
if (r->anchor == NULL) {
match = 1;
*rm = r;
*am = a;
*rsm = ruleset;
- if ((*rm)->quick)
+ if ((*rm)->quick) {
break;
+ }
r = TAILQ_NEXT(r, entries);
- } else
+ } else {
pf_step_into_anchor(&asd, &ruleset,
PF_RULESET_FILTER, &r, &a, &match);
+ }
}
if (r == NULL && pf_step_out_of_anchor(&asd, &ruleset,
- PF_RULESET_FILTER, &r, &a, &match))
+ PF_RULESET_FILTER, &r, &a, &match)) {
break;
+ }
}
r = *rm;
a = *am;
if (r->log || (nr != NULL && nr->log)) {
if (rewrite > 0) {
- if (rewrite < off + hdrlen)
+ if (rewrite < off + hdrlen) {
rewrite = off + hdrlen;
+ }
- m = pf_lazy_makewritable(pd, m, rewrite);
- if (!m) {
+ if (pf_lazy_makewritable(pd, pbuf, rewrite) == NULL) {
REASON_SET(&reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
- m_copyback(m, off, hdrlen, pd->hdr.any);
+ pbuf_copy_back(pbuf, off, hdrlen, pd->hdr.any);
}
- PFLOG_PACKET(kif, h, m, af, direction, reason, r->log ? r : nr,
- a, ruleset, pd);
+ PFLOG_PACKET(kif, h, pbuf, pd->af, direction, reason,
+ r->log ? r : nr, a, ruleset, pd);
}
if ((r->action == PF_DROP) &&
(r->rule_flag & PFRULE_RETURNICMP) ||
(r->rule_flag & PFRULE_RETURN))) {
/* undo NAT changes, if they have taken place */
- if (nr != NULL) {
+ /* XXX For NAT64 we are not reverting the changes */
+ if (nr != NULL && nr->action != PF_NAT64) {
if (direction == PF_OUT) {
+ pd->af = af;
switch (pd->proto) {
case IPPROTO_TCP:
pf_change_ap(direction, pd->mp, saddr,
&th->th_sport, pd->ip_sum,
&th->th_sum, &pd->baddr,
- bxport.port, 0, af);
+ bxport.port, 0, af, pd->af, 1);
sxport.port = th->th_sport;
rewrite++;
break;
pf_change_ap(direction, pd->mp, saddr,
&pd->hdr.udp->uh_sport, pd->ip_sum,
&pd->hdr.udp->uh_sum, &pd->baddr,
- bxport.port, 1, af);
+ bxport.port, 1, af, pd->af, 1);
sxport.port = pd->hdr.udp->uh_sport;
rewrite++;
break;
switch (af) {
#if INET
case AF_INET:
- pf_change_a(&saddr->v4.s_addr,
+ pf_change_a(&saddr->v4addr.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->baddr.v4addr.s_addr, 0);
break;
#endif /* INET */
#if INET6
switch (af) {
#if INET
case AF_INET:
- pf_change_a(&saddr->v4.s_addr,
+ pf_change_a(&saddr->v4addr.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->baddr.v4addr.s_addr, 0);
break;
#endif /* INET */
#if INET6
default:
switch (af) {
case AF_INET:
- pf_change_a(&saddr->v4.s_addr,
+ pf_change_a(&saddr->v4addr.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->baddr.v4addr.s_addr, 0);
break;
case AF_INET6:
PF_ACPY(saddr, &pd->baddr, af);
case IPPROTO_TCP:
pf_change_ap(direction, pd->mp, daddr,
&th->th_dport, pd->ip_sum,
- &th->th_sum, &pd->baddr,
- bxport.port, 0, af);
+ &th->th_sum, &pd->bdaddr,
+ bdxport.port, 0, af, pd->af, 1);
dxport.port = th->th_dport;
rewrite++;
break;
case IPPROTO_UDP:
pf_change_ap(direction, pd->mp, daddr,
&pd->hdr.udp->uh_dport, pd->ip_sum,
- &pd->hdr.udp->uh_sum, &pd->baddr,
- bxport.port, 1, af);
+ &pd->hdr.udp->uh_sum, &pd->bdaddr,
+ bdxport.port, 1, af, pd->af, 1);
dxport.port = pd->hdr.udp->uh_dport;
rewrite++;
break;
break;
case IPPROTO_GRE:
if (pd->proto_variant ==
- PF_GRE_PPTP_VARIANT)
- grev1->call_id = bxport.call_id;
+ PF_GRE_PPTP_VARIANT) {
+ grev1->call_id =
+ bdxport.call_id;
+ }
++rewrite;
switch (af) {
#if INET
case AF_INET:
- pf_change_a(&daddr->v4.s_addr,
+ pf_change_a(&daddr->v4addr.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->bdaddr.v4addr.s_addr, 0);
break;
#endif /* INET */
#if INET6
case AF_INET6:
- PF_ACPY(daddr, &pd->baddr,
+ PF_ACPY(daddr, &pd->bdaddr,
AF_INET6);
break;
#endif /* INET6 */
switch (af) {
#if INET
case AF_INET:
- pf_change_a(&daddr->v4.s_addr,
+ pf_change_a(&daddr->v4addr.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->bdaddr.v4addr.s_addr, 0);
break;
#endif /* INET */
#if INET6
case AF_INET6:
- PF_ACPY(daddr, &pd->baddr,
+ PF_ACPY(daddr, &pd->bdaddr,
AF_INET6);
break;
#endif /* INET6 */
default:
switch (af) {
case AF_INET:
- pf_change_a(&daddr->v4.s_addr,
+ pf_change_a(&daddr->v4addr.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->bdaddr.v4addr.s_addr, 0);
break;
#if INET6
case AF_INET6:
- PF_ACPY(daddr, &pd->baddr, af);
+ PF_ACPY(daddr, &pd->bdaddr, af);
break;
#endif /* INET6 */
}
((r->rule_flag & PFRULE_RETURNRST) ||
(r->rule_flag & PFRULE_RETURN)) &&
!(th->th_flags & TH_RST)) {
- u_int32_t ack = ntohl(th->th_seq) + pd->p_len;
- int len = 0;
- struct ip *h4;
+ u_int32_t ack = ntohl(th->th_seq) + pd->p_len;
+ int len = 0;
+ struct ip *h4;
#if INET6
- struct ip6_hdr *h6;
+ struct ip6_hdr *h6;
#endif /* INET6 */
- switch (af) {
+ switch (pd->af) {
case AF_INET:
- h4 = mtod(m, struct ip *);
+ h4 = pbuf->pb_data;
len = ntohs(h4->ip_len) - off;
break;
#if INET6
case AF_INET6:
- h6 = mtod(m, struct ip6_hdr *);
+ h6 = pbuf->pb_data;
len = ntohs(h6->ip6_plen) -
- (off - sizeof (*h6));
+ (off - sizeof(*h6));
break;
#endif /* INET6 */
}
- if (pf_check_proto_cksum(m, off, len, IPPROTO_TCP, af))
+ if (pf_check_proto_cksum(pbuf, off, len, IPPROTO_TCP,
+ pd->af)) {
REASON_SET(&reason, PFRES_PROTCKSUM);
- else {
- if (th->th_flags & TH_SYN)
+ } else {
+ if (th->th_flags & TH_SYN) {
ack++;
- if (th->th_flags & TH_FIN)
+ }
+ if (th->th_flags & TH_FIN) {
ack++;
- pf_send_tcp(r, af, pd->dst,
+ }
+ pf_send_tcp(r, pd->af, pd->dst,
pd->src, th->th_dport, th->th_sport,
- ntohl(th->th_ack), ack, TH_RST|TH_ACK, 0, 0,
+ ntohl(th->th_ack), ack, TH_RST | TH_ACK, 0, 0,
r->return_ttl, 1, 0, pd->eh, kif->pfik_ifp);
}
- } else if (pd->proto != IPPROTO_ICMP && af == AF_INET &&
+ } else if (pd->proto != IPPROTO_ICMP && pd->af == AF_INET &&
pd->proto != IPPROTO_ESP && pd->proto != IPPROTO_AH &&
- r->return_icmp)
- pf_send_icmp(m, r->return_icmp >> 8,
- r->return_icmp & 255, af, r);
- else if (pd->proto != IPPROTO_ICMPV6 && af == AF_INET6 &&
+ r->return_icmp) {
+ pf_send_icmp(pbuf, r->return_icmp >> 8,
+ r->return_icmp & 255, pd->af, r);
+ } else if (pd->proto != IPPROTO_ICMPV6 && af == AF_INET6 &&
pd->proto != IPPROTO_ESP && pd->proto != IPPROTO_AH &&
- r->return_icmp6)
- pf_send_icmp(m, r->return_icmp6 >> 8,
- r->return_icmp6 & 255, af, r);
+ r->return_icmp6) {
+ pf_send_icmp(pbuf, r->return_icmp6 >> 8,
+ r->return_icmp6 & 255, pd->af, r);
+ }
}
- if (r->action == PF_DROP)
- return (PF_DROP);
+ if (r->action == PF_DROP) {
+ return PF_DROP;
+ }
/* prepare state key, for flowhash and/or the state (if created) */
- bzero(&psk, sizeof (psk));
+ bzero(&psk, sizeof(psk));
psk.proto = pd->proto;
psk.direction = direction;
- psk.af = af;
if (pd->proto == IPPROTO_UDP) {
if (ntohs(pd->hdr.udp->uh_sport) == PF_IKE_PORT &&
ntohs(pd->hdr.udp->uh_dport) == PF_IKE_PORT) {
psk.proto_variant = PF_EXTFILTER_APD;
} else {
psk.proto_variant = nr ? nr->extfilter : r->extfilter;
- if (psk.proto_variant < PF_EXTFILTER_APD)
+ if (psk.proto_variant < PF_EXTFILTER_APD) {
psk.proto_variant = PF_EXTFILTER_APD;
+ }
}
} else if (pd->proto == IPPROTO_GRE) {
psk.proto_variant = pd->proto_variant;
}
if (direction == PF_OUT) {
+ psk.af_gwy = af;
PF_ACPY(&psk.gwy.addr, saddr, af);
- PF_ACPY(&psk.ext.addr, daddr, af);
+ PF_ACPY(&psk.ext_gwy.addr, daddr, af);
switch (pd->proto) {
- case IPPROTO_UDP:
- psk.gwy.xport = sxport;
- psk.ext.xport = dxport;
- break;
case IPPROTO_ESP:
psk.gwy.xport.spi = 0;
- psk.ext.xport.spi = pd->hdr.esp->spi;
+ psk.ext_gwy.xport.spi = pd->hdr.esp->spi;
break;
case IPPROTO_ICMP:
#if INET6
case IPPROTO_ICMPV6:
#endif
+ /*
+ * NAT64 requires protocol translation between ICMPv4
+ * and ICMPv6. TCP and UDP do not require protocol
+ * translation. To avoid adding complexity just to
+ * handle ICMP(v4addr/v6addr), we always lookup for
+ * proto = IPPROTO_ICMP on both LAN and WAN side
+ */
+ psk.proto = IPPROTO_ICMP;
psk.gwy.xport.port = nxport.port;
- psk.ext.xport.spi = 0;
+ psk.ext_gwy.xport.spi = 0;
break;
default:
psk.gwy.xport = sxport;
- psk.ext.xport = dxport;
+ psk.ext_gwy.xport = dxport;
break;
}
+ psk.af_lan = af;
if (nr != NULL) {
PF_ACPY(&psk.lan.addr, &pd->baddr, af);
psk.lan.xport = bxport;
+ PF_ACPY(&psk.ext_lan.addr, &pd->bdaddr, af);
+ psk.ext_lan.xport = bdxport;
} else {
PF_ACPY(&psk.lan.addr, &psk.gwy.addr, af);
psk.lan.xport = psk.gwy.xport;
+ PF_ACPY(&psk.ext_lan.addr, &psk.ext_gwy.addr, af);
+ psk.ext_lan.xport = psk.ext_gwy.xport;
}
} else {
- PF_ACPY(&psk.lan.addr, daddr, af);
- PF_ACPY(&psk.ext.addr, saddr, af);
+ psk.af_lan = af;
+ if (nr && nr->action == PF_NAT64) {
+ PF_ACPY(&psk.lan.addr, &pd->baddr, af);
+ PF_ACPY(&psk.ext_lan.addr, &pd->bdaddr, af);
+ } else {
+ PF_ACPY(&psk.lan.addr, daddr, af);
+ PF_ACPY(&psk.ext_lan.addr, saddr, af);
+ }
switch (pd->proto) {
case IPPROTO_ICMP:
#if INET6
case IPPROTO_ICMPV6:
#endif
- psk.lan.xport = nxport;
- psk.ext.xport.spi = 0;
+ /*
+ * NAT64 requires protocol translation between ICMPv4
+ * and ICMPv6. TCP and UDP do not require protocol
+ * translation. To avoid adding complexity just to
+ * handle ICMP(v4addr/v6addr), we always lookup for
+ * proto = IPPROTO_ICMP on both LAN and WAN side
+ */
+ psk.proto = IPPROTO_ICMP;
+ if (nr && nr->action == PF_NAT64) {
+ psk.lan.xport = bxport;
+ psk.ext_lan.xport = bxport;
+ } else {
+ psk.lan.xport = nxport;
+ psk.ext_lan.xport.spi = 0;
+ }
break;
case IPPROTO_ESP:
- psk.ext.xport.spi = 0;
+ psk.ext_lan.xport.spi = 0;
psk.lan.xport.spi = pd->hdr.esp->spi;
break;
default:
- psk.lan.xport = dxport;
- psk.ext.xport = sxport;
+ if (nr != NULL) {
+ if (nr->action == PF_NAT64) {
+ psk.lan.xport = bxport;
+ psk.ext_lan.xport = bdxport;
+ } else {
+ psk.lan.xport = dxport;
+ psk.ext_lan.xport = sxport;
+ }
+ } else {
+ psk.lan.xport = dxport;
+ psk.ext_lan.xport = sxport;
+ }
break;
}
+ psk.af_gwy = pd->naf;
if (nr != NULL) {
- PF_ACPY(&psk.gwy.addr, &pd->baddr, af);
- psk.gwy.xport = bxport;
+ if (nr->action == PF_NAT64) {
+ PF_ACPY(&psk.gwy.addr, &pd->naddr, pd->naf);
+ PF_ACPY(&psk.ext_gwy.addr, &pd->ndaddr,
+ pd->naf);
+ if ((pd->proto == IPPROTO_ICMPV6) ||
+ (pd->proto == IPPROTO_ICMP)) {
+ psk.gwy.xport = nxport;
+ psk.ext_gwy.xport = nxport;
+ } else {
+ psk.gwy.xport = sxport;
+ psk.ext_gwy.xport = dxport;
+ }
+ } else {
+ PF_ACPY(&psk.gwy.addr, &pd->bdaddr, af);
+ psk.gwy.xport = bdxport;
+ PF_ACPY(&psk.ext_gwy.addr, saddr, af);
+ psk.ext_gwy.xport = sxport;
+ }
} else {
PF_ACPY(&psk.gwy.addr, &psk.lan.addr, af);
psk.gwy.xport = psk.lan.xport;
+ PF_ACPY(&psk.ext_gwy.addr, &psk.ext_lan.addr, af);
+ psk.ext_gwy.xport = psk.ext_lan.xport;
}
}
if (pd->pktflags & PKTF_FLOW_ID) {
pd->pktflags &= ~PKTF_FLOW_ADV;
}
- if (pf_tag_packet(m, pd->pf_mtag, tag, rtableid, pd)) {
+ if (pf_tag_packet(pbuf, pd->pf_mtag, tag, rtableid, pd)) {
REASON_SET(&reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
if (!state_icmp && (r->keep_state || nr != NULL ||
(pd->flags & PFDESC_TCP_NORM))) {
/* create new state */
- struct pf_state *s = NULL;
+ struct pf_state *s = NULL;
struct pf_state_key *sk = NULL;
struct pf_src_node *sn = NULL;
struct pf_ike_hdr ike;
if (pd->proto == IPPROTO_UDP) {
- struct udphdr *uh = pd->hdr.udp;
- size_t plen = m->m_pkthdr.len - off - sizeof (*uh);
+ size_t plen = pbuf->pb_packet_len - off - sizeof(*uh);
if (ntohs(uh->uh_sport) == PF_IKE_PORT &&
ntohs(uh->uh_dport) == PF_IKE_PORT &&
plen >= PF_IKE_PACKET_MINSIZE) {
- if (plen > PF_IKE_PACKET_MINSIZE)
+ if (plen > PF_IKE_PACKET_MINSIZE) {
plen = PF_IKE_PACKET_MINSIZE;
- m_copydata(m, off + sizeof (*uh), plen, &ike);
+ }
+ pbuf_copy_data(pbuf, off + sizeof(*uh), plen,
+ &ike);
}
}
if (nr != NULL && pd->proto == IPPROTO_ESP &&
direction == PF_OUT) {
- struct pf_state_key_cmp sk0;
+ struct pf_state_key_cmp sk0;
struct pf_state *s0;
/*
* different internal address. Only one 'blocking'
* partial state is allowed for each external address.
*/
- memset(&sk0, 0, sizeof (sk0));
- sk0.af = pd->af;
+ memset(&sk0, 0, sizeof(sk0));
+ sk0.af_gwy = pd->af;
sk0.proto = IPPROTO_ESP;
- PF_ACPY(&sk0.gwy.addr, saddr, sk0.af);
- PF_ACPY(&sk0.ext.addr, daddr, sk0.af);
+ PF_ACPY(&sk0.gwy.addr, saddr, sk0.af_gwy);
+ PF_ACPY(&sk0.ext_gwy.addr, daddr, sk0.af_gwy);
s0 = pf_find_state(kif, &sk0, PF_IN);
if (s0 && PF_ANEQ(&s0->state_key->lan.addr,
pool_put(&pf_src_tree_pl, nsn);
}
if (sk != NULL) {
- if (sk->app_state)
+ if (sk->app_state) {
pool_put(&pf_app_state_pl,
sk->app_state);
+ }
pool_put(&pf_state_key_pl, sk);
}
- return (PF_DROP);
+ return PF_DROP;
}
- bzero(s, sizeof (*s));
+ bzero(s, sizeof(*s));
TAILQ_INIT(&s->unlink_hooks);
s->rule.ptr = r;
s->nat_rule.ptr = nr;
STATE_INC_COUNTERS(s);
s->allow_opts = r->allow_opts;
s->log = r->log & PF_LOG_ALL;
- if (nr != NULL)
+ if (nr != NULL) {
s->log |= nr->log & PF_LOG_ALL;
+ }
switch (pd->proto) {
case IPPROTO_TCP:
s->src.seqlo = ntohl(th->th_seq);
s->src.seqhi = s->src.seqlo + pd->p_len + 1;
- if ((th->th_flags & (TH_SYN|TH_ACK)) ==
+ if ((th->th_flags & (TH_SYN | TH_ACK)) ==
TH_SYN && r->keep_state == PF_STATE_MODULATE) {
/* Generate sequence number modulator */
if ((s->src.seqdiff = pf_tcp_iss(pd) -
- s->src.seqlo) == 0)
+ s->src.seqlo) == 0) {
s->src.seqdiff = 1;
+ }
pf_change_a(&th->th_seq, &th->th_sum,
htonl(s->src.seqlo + s->src.seqdiff), 0);
- rewrite = off + sizeof (*th);
- } else
+ rewrite = off + sizeof(*th);
+ } else {
s->src.seqdiff = 0;
+ }
if (th->th_flags & TH_SYN) {
s->src.seqhi++;
- s->src.wscale = pf_get_wscale(m, off,
+ s->src.wscale = pf_get_wscale(pbuf, off,
th->th_off, af);
}
s->src.max_win = MAX(ntohs(th->th_win), 1);
s->src.max_win = (win - 1) >>
(s->src.wscale & PF_WSCALE_MASK);
}
- if (th->th_flags & TH_FIN)
+ if (th->th_flags & TH_FIN) {
s->src.seqhi++;
+ }
s->dst.seqhi = 1;
s->dst.max_win = 1;
s->src.state = TCPS_SYN_SENT;
}
if (pd->proto == IPPROTO_TCP) {
if ((pd->flags & PFDESC_TCP_NORM) &&
- pf_normalize_tcp_init(m, off, pd, th, &s->src,
+ pf_normalize_tcp_init(pbuf, off, pd, th, &s->src,
&s->dst)) {
REASON_SET(&reason, PFRES_MEMORY);
pf_src_tree_remove_state(s);
STATE_DEC_COUNTERS(s);
pool_put(&pf_state_pl, s);
- return (PF_DROP);
+ return PF_DROP;
}
if ((pd->flags & PFDESC_TCP_NORM) && s->src.scrub &&
- pf_normalize_tcp_stateful(m, off, pd, &reason,
+ pf_normalize_tcp_stateful(pbuf, off, pd, &reason,
th, s, &s->src, &s->dst, &rewrite)) {
/* This really shouldn't happen!!! */
DPFPRINTF(PF_DEBUG_URGENT,
pf_src_tree_remove_state(s);
STATE_DEC_COUNTERS(s);
pool_put(&pf_state_pl, s);
- return (PF_DROP);
+ return PF_DROP;
}
}
/* allocate state key and import values from psk */
if ((sk = pf_alloc_state_key(s, &psk)) == NULL) {
REASON_SET(&reason, PFRES_MEMORY);
+ /*
+ * XXXSCW: This will leak the freshly-allocated
+ * state structure 's'. Although it should
+ * eventually be aged-out and removed.
+ */
goto cleanup;
}
- pf_set_rt_ifp(s, saddr); /* needs s->state_key set */
+ pf_set_rt_ifp(s, saddr, af); /* needs s->state_key set */
- m = pd->mp;
+ pbuf = pd->mp; // XXXSCW: Why?
if (sk->app_state == 0) {
switch (pd->proto) {
case IPPROTO_TCP: {
u_int16_t dport = (direction == PF_OUT) ?
- sk->ext.xport.port : sk->gwy.xport.port;
+ sk->ext_gwy.xport.port : sk->gwy.xport.port;
if (nr != NULL &&
ntohs(dport) == PF_PPTP_PORT) {
goto cleanup;
}
- bzero(as, sizeof (*as));
+ bzero(as, sizeof(*as));
as->handler = pf_pptp_handler;
as->compare_lan_ext = 0;
as->compare_ext_gwy = 0;
}
case IPPROTO_UDP: {
- struct udphdr *uh = pd->hdr.udp;
-
if (nr != NULL &&
ntohs(uh->uh_sport) == PF_IKE_PORT &&
ntohs(uh->uh_dport) == PF_IKE_PORT) {
goto cleanup;
}
- bzero(as, sizeof (*as));
+ bzero(as, sizeof(*as));
as->compare_lan_ext = pf_ike_compare;
as->compare_ext_gwy = pf_ike_compare;
as->u.ike.cookie = ike.initiator_cookie;
}
if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
- if (pd->proto == IPPROTO_TCP)
+ if (pd->proto == IPPROTO_TCP) {
pf_normalize_tcp_cleanup(s);
+ }
REASON_SET(&reason, PFRES_STATEINS);
pf_src_tree_remove_state(s);
STATE_DEC_COUNTERS(s);
pool_put(&pf_state_pl, s);
- return (PF_DROP);
- } else
+ return PF_DROP;
+ } else {
*sm = s;
+ }
if (tag > 0) {
pf_tag_ref(tag);
s->tag = tag;
}
if (pd->proto == IPPROTO_TCP &&
- (th->th_flags & (TH_SYN|TH_ACK)) == TH_SYN &&
+ (th->th_flags & (TH_SYN | TH_ACK)) == TH_SYN &&
r->keep_state == PF_STATE_SYNPROXY) {
+ int ua = (sk->af_lan == sk->af_gwy) ? 1 : 0;
s->src.state = PF_TCPS_PROXY_SRC;
if (nr != NULL) {
if (direction == PF_OUT) {
pf_change_ap(direction, pd->mp, saddr,
&th->th_sport, pd->ip_sum,
&th->th_sum, &pd->baddr,
- bxport.port, 0, af);
+ bxport.port, 0, af, pd->af, ua);
sxport.port = th->th_sport;
} else {
pf_change_ap(direction, pd->mp, daddr,
&th->th_dport, pd->ip_sum,
&th->th_sum, &pd->baddr,
- bxport.port, 0, af);
+ bxport.port, 0, af, pd->af, ua);
sxport.port = th->th_dport;
}
}
s->src.seqhi = htonl(random());
/* Find mss option */
- mss = pf_get_mss(m, off, th->th_off, af);
+ mss = pf_get_mss(pbuf, off, th->th_off, af);
mss = pf_calc_mss(saddr, af, mss);
mss = pf_calc_mss(daddr, af, mss);
s->src.mss = mss;
pf_send_tcp(r, af, daddr, saddr, th->th_dport,
th->th_sport, s->src.seqhi, ntohl(th->th_seq) + 1,
- TH_SYN|TH_ACK, 0, s->src.mss, 0, 1, 0, NULL, NULL);
+ TH_SYN | TH_ACK, 0, s->src.mss, 0, 1, 0, NULL, NULL);
REASON_SET(&reason, PFRES_SYNPROXY);
- return (PF_SYNPROXY_DROP);
+ return PF_SYNPROXY_DROP;
}
if (sk->app_state && sk->app_state->handler) {
pd, kif);
if (pd->lmw < 0) {
REASON_SET(&reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
- m = pd->mp;
+ pbuf = pd->mp; // XXXSCW: Why?
}
}
}
/* copy back packet headers if we performed NAT operations */
if (rewrite) {
- if (rewrite < off + hdrlen)
+ if (rewrite < off + hdrlen) {
rewrite = off + hdrlen;
+ }
- m = pf_lazy_makewritable(pd, pd->mp, rewrite);
- if (!m) {
+ if (pf_lazy_makewritable(pd, pd->mp, rewrite) == NULL) {
REASON_SET(&reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
+ }
+
+ pbuf_copy_back(pbuf, off, hdrlen, pd->hdr.any);
+ if (af == AF_INET6 && pd->naf == AF_INET) {
+ return pf_nat64_ipv6(pbuf, off, pd);
+ } else if (af == AF_INET && pd->naf == AF_INET6) {
+ return pf_nat64_ipv4(pbuf, off, pd);
}
+ }
+
+ return PF_PASS;
+}
+
+boolean_t is_nlc_enabled_glb = FALSE;
+
+static inline boolean_t
+pf_is_dummynet_enabled(void)
+{
+#if DUMMYNET
+ if (__probable(!PF_IS_ENABLED)) {
+ return FALSE;
+ }
+
+ if (__probable(!DUMMYNET_LOADED)) {
+ return FALSE;
+ }
+
+ if (__probable(TAILQ_EMPTY(pf_main_ruleset.
+ rules[PF_RULESET_DUMMYNET].active.ptr))) {
+ return FALSE;
+ }
+
+ return TRUE;
+#else
+ return FALSE;
+#endif /* DUMMYNET */
+}
+
+boolean_t
+pf_is_nlc_enabled(void)
+{
+#if DUMMYNET
+ if (__probable(!pf_is_dummynet_enabled())) {
+ return FALSE;
+ }
- m_copyback(m, off, hdrlen, pd->hdr.any);
+ if (__probable(!is_nlc_enabled_glb)) {
+ return FALSE;
}
- return (PF_PASS);
+ return TRUE;
+#else
+ return FALSE;
+#endif /* DUMMYNET */
}
#if DUMMYNET
/*
- * When pf_test_dummynet() returns PF_PASS, the rule matching parameter "rm"
+ * When pf_test_dummynet() returns PF_PASS, the rule matching parameter "rm"
* remains unchanged, meaning the packet did not match a dummynet rule.
- * when the packet does match a dummynet rule, pf_test_dummynet() returns
- * PF_PASS and zero out the mbuf rule as the packet is effectively siphoned
+ * when the packet does match a dummynet rule, pf_test_dummynet() returns
+ * PF_PASS and zero out the mbuf rule as the packet is effectively siphoned
* out by dummynet.
*/
static int
-pf_test_dummynet(struct pf_rule **rm, int direction, struct pfi_kif *kif,
- struct mbuf **m0, struct pf_pdesc *pd, struct ip_fw_args *fwa)
+pf_test_dummynet(struct pf_rule **rm, int direction, struct pfi_kif *kif,
+ pbuf_t **pbuf0, struct pf_pdesc *pd, struct ip_fw_args *fwa)
{
- struct mbuf *m = *m0;
- struct pf_rule *am = NULL;
- struct pf_ruleset *rsm = NULL;
- struct pf_addr *saddr = pd->src, *daddr = pd->dst;
- sa_family_t af = pd->af;
- struct pf_rule *r, *a = NULL;
- struct pf_ruleset *ruleset = NULL;
- struct tcphdr *th = pd->hdr.tcp;
- u_short reason;
- int hdrlen = 0;
- int tag = -1;
- unsigned int rtableid = IFSCOPE_NONE;
- int asd = 0;
- int match = 0;
- u_int8_t icmptype = 0, icmpcode = 0;
- struct ip_fw_args dnflow;
- struct pf_rule *prev_matching_rule = fwa ? fwa->fwa_pf_rule : NULL;
- int found_prev_rule = (prev_matching_rule) ? 0 : 1;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if (!DUMMYNET_LOADED)
- return (PF_PASS);
-
- if (TAILQ_EMPTY(pf_main_ruleset.rules[PF_RULESET_DUMMYNET].active.ptr))
- return (PF_PASS);
-
+ pbuf_t *pbuf = *pbuf0;
+ struct pf_rule *am = NULL;
+ struct pf_ruleset *rsm = NULL;
+ struct pf_addr *saddr = pd->src, *daddr = pd->dst;
+ sa_family_t af = pd->af;
+ struct pf_rule *r, *a = NULL;
+ struct pf_ruleset *ruleset = NULL;
+ struct tcphdr *th = pd->hdr.tcp;
+ u_short reason;
+ int hdrlen = 0;
+ int tag = -1;
+ unsigned int rtableid = IFSCOPE_NONE;
+ int asd = 0;
+ int match = 0;
+ u_int8_t icmptype = 0, icmpcode = 0;
+ struct ip_fw_args dnflow;
+ struct pf_rule *prev_matching_rule = fwa ? fwa->fwa_pf_rule : NULL;
+ int found_prev_rule = (prev_matching_rule) ? 0 : 1;
+
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ if (!pf_is_dummynet_enabled()) {
+ return PF_PASS;
+ }
+
bzero(&dnflow, sizeof(dnflow));
hdrlen = 0;
/* Fragments don't gave protocol headers */
- if (!(pd->flags & PFDESC_IP_FRAG))
+ if (!(pd->flags & PFDESC_IP_FRAG)) {
switch (pd->proto) {
case IPPROTO_TCP:
dnflow.fwa_id.flags = pd->hdr.tcp->th_flags;
dnflow.fwa_id.dst_port = ntohs(pd->hdr.tcp->th_dport);
dnflow.fwa_id.src_port = ntohs(pd->hdr.tcp->th_sport);
- hdrlen = sizeof (*th);
+ hdrlen = sizeof(*th);
break;
case IPPROTO_UDP:
dnflow.fwa_id.dst_port = ntohs(pd->hdr.udp->uh_dport);
dnflow.fwa_id.src_port = ntohs(pd->hdr.udp->uh_sport);
- hdrlen = sizeof (*pd->hdr.udp);
+ hdrlen = sizeof(*pd->hdr.udp);
break;
#if INET
case IPPROTO_ICMP:
- if (af != AF_INET)
+ if (af != AF_INET) {
break;
+ }
hdrlen = ICMP_MINLEN;
icmptype = pd->hdr.icmp->icmp_type;
icmpcode = pd->hdr.icmp->icmp_code;
#endif /* INET */
#if INET6
case IPPROTO_ICMPV6:
- if (af != AF_INET6)
+ if (af != AF_INET6) {
break;
- hdrlen = sizeof (*pd->hdr.icmp6);
+ }
+ hdrlen = sizeof(*pd->hdr.icmp6);
icmptype = pd->hdr.icmp6->icmp6_type;
icmpcode = pd->hdr.icmp6->icmp6_code;
break;
#endif /* INET6 */
case IPPROTO_GRE:
- if (pd->proto_variant == PF_GRE_PPTP_VARIANT)
- hdrlen = sizeof (*pd->hdr.grev1);
+ if (pd->proto_variant == PF_GRE_PPTP_VARIANT) {
+ hdrlen = sizeof(*pd->hdr.grev1);
+ }
break;
case IPPROTO_ESP:
- hdrlen = sizeof (*pd->hdr.esp);
+ hdrlen = sizeof(*pd->hdr.esp);
break;
}
+ }
r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_DUMMYNET].active.ptr);
while (r != NULL) {
r->evaluations++;
- if (pfi_kif_match(r->kif, kif) == r->ifnot)
+ if (pfi_kif_match(r->kif, kif) == r->ifnot) {
r = r->skip[PF_SKIP_IFP].ptr;
- else if (r->direction && r->direction != direction)
+ } else if (r->direction && r->direction != direction) {
r = r->skip[PF_SKIP_DIR].ptr;
- else if (r->af && r->af != af)
+ } else if (r->af && r->af != af) {
r = r->skip[PF_SKIP_AF].ptr;
- else if (r->proto && r->proto != pd->proto)
+ } else if (r->proto && r->proto != pd->proto) {
r = r->skip[PF_SKIP_PROTO].ptr;
- else if (PF_MISMATCHAW(&r->src.addr, saddr, af,
- r->src.neg, kif))
+ } else if (PF_MISMATCHAW(&r->src.addr, saddr, af,
+ r->src.neg, kif)) {
r = r->skip[PF_SKIP_SRC_ADDR].ptr;
+ }
/* tcp/udp only. port_op always 0 in other cases */
- else if (r->proto == pd->proto &&
+ else if (r->proto == pd->proto &&
(r->proto == IPPROTO_TCP || r->proto == IPPROTO_UDP) &&
((pd->flags & PFDESC_IP_FRAG) ||
((r->src.xport.range.op &&
!pf_match_port(r->src.xport.range.op,
r->src.xport.range.port[0], r->src.xport.range.port[1],
- th->th_sport)))))
+ th->th_sport))))) {
r = r->skip[PF_SKIP_SRC_PORT].ptr;
- else if (PF_MISMATCHAW(&r->dst.addr, daddr, af,
- r->dst.neg, NULL))
+ } else if (PF_MISMATCHAW(&r->dst.addr, daddr, af,
+ r->dst.neg, NULL)) {
r = r->skip[PF_SKIP_DST_ADDR].ptr;
+ }
/* tcp/udp only. port_op always 0 in other cases */
else if (r->proto == pd->proto &&
(r->proto == IPPROTO_TCP || r->proto == IPPROTO_UDP) &&
((pd->flags & PFDESC_IP_FRAG) ||
!pf_match_port(r->dst.xport.range.op,
r->dst.xport.range.port[0], r->dst.xport.range.port[1],
- th->th_dport)))
+ th->th_dport))) {
r = r->skip[PF_SKIP_DST_PORT].ptr;
+ }
/* icmp only. type always 0 in other cases */
- else if (r->type &&
- ((pd->flags & PFDESC_IP_FRAG) ||
- r->type != icmptype + 1))
+ else if (r->type &&
+ ((pd->flags & PFDESC_IP_FRAG) ||
+ r->type != icmptype + 1)) {
r = TAILQ_NEXT(r, entries);
+ }
/* icmp only. type always 0 in other cases */
- else if (r->code &&
- ((pd->flags & PFDESC_IP_FRAG) ||
- r->code != icmpcode + 1))
+ else if (r->code &&
+ ((pd->flags & PFDESC_IP_FRAG) ||
+ r->code != icmpcode + 1)) {
r = TAILQ_NEXT(r, entries);
- else if (r->tos && !(r->tos == pd->tos))
+ } else if (r->tos && !(r->tos == pd->tos)) {
r = TAILQ_NEXT(r, entries);
- else if (r->rule_flag & PFRULE_FRAGMENT)
+ } else if (r->rule_flag & PFRULE_FRAGMENT) {
r = TAILQ_NEXT(r, entries);
- else if (pd->proto == IPPROTO_TCP &&
+ } else if (pd->proto == IPPROTO_TCP &&
((pd->flags & PFDESC_IP_FRAG) ||
- (r->flagset & th->th_flags) != r->flags))
+ (r->flagset & th->th_flags) != r->flags)) {
r = TAILQ_NEXT(r, entries);
- else if (r->prob && r->prob <= (RandomULong() % (UINT_MAX - 1) + 1))
+ } else if (r->prob && r->prob <= (RandomULong() % (UINT_MAX - 1) + 1)) {
r = TAILQ_NEXT(r, entries);
- else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+ } else if (r->match_tag && !pf_match_tag(r, pd->pf_mtag, &tag)) {
r = TAILQ_NEXT(r, entries);
- else {
- /*
- * Need to go past the previous dummynet matching rule
+ } else {
+ /*
+ * Need to go past the previous dummynet matching rule
*/
if (r->anchor == NULL) {
if (found_prev_rule) {
- if (r->tag)
+ if (r->tag) {
tag = r->tag;
- if (PF_RTABLEID_IS_VALID(r->rtableid))
+ }
+ if (PF_RTABLEID_IS_VALID(r->rtableid)) {
rtableid = r->rtableid;
+ }
match = 1;
*rm = r;
am = a;
rsm = ruleset;
- if ((*rm)->quick)
+ if ((*rm)->quick) {
break;
+ }
} else if (r == prev_matching_rule) {
found_prev_rule = 1;
}
}
}
if (r == NULL && pf_step_out_of_anchor(&asd, &ruleset,
- PF_RULESET_DUMMYNET, &r, &a, &match))
+ PF_RULESET_DUMMYNET, &r, &a, &match)) {
break;
+ }
}
r = *rm;
a = am;
ruleset = rsm;
- if (!match)
- return (PF_PASS);
+ if (!match) {
+ return PF_PASS;
+ }
REASON_SET(&reason, PFRES_DUMMYNET);
if (r->log) {
- PFLOG_PACKET(kif, h, m, af, direction, reason, r,
+ PFLOG_PACKET(kif, h, pbuf, af, direction, reason, r,
a, ruleset, pd);
}
if (r->action == PF_NODUMMYNET) {
int dirndx = (direction == PF_OUT);
-
+
r->packets[dirndx]++;
r->bytes[dirndx] += pd->tot_len;
- return (PF_PASS);
+ return PF_PASS;
}
- if (pf_tag_packet(m, pd->pf_mtag, tag, rtableid, pd)) {
+ if (pf_tag_packet(pbuf, pd->pf_mtag, tag, rtableid, pd)) {
REASON_SET(&reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
if (r->dnpipe && ip_dn_io_ptr != NULL) {
+ struct mbuf *m;
int dirndx = (direction == PF_OUT);
-
+
r->packets[dirndx]++;
r->bytes[dirndx] += pd->tot_len;
-
+
dnflow.fwa_cookie = r->dnpipe;
dnflow.fwa_pf_rule = r;
dnflow.fwa_id.proto = pd->proto;
dnflow.fwa_flags = r->dntype;
switch (af) {
- case AF_INET:
- dnflow.fwa_id.addr_type = 4;
- dnflow.fwa_id.src_ip = ntohl(saddr->v4.s_addr);
- dnflow.fwa_id.dst_ip = ntohl(daddr->v4.s_addr);
- break;
- case AF_INET6:
- dnflow.fwa_id.addr_type = 6;
- dnflow.fwa_id.src_ip6 = saddr->v6;
- dnflow.fwa_id.dst_ip6 = saddr->v6;
- break;
- }
+ case AF_INET:
+ dnflow.fwa_id.addr_type = 4;
+ dnflow.fwa_id.src_ip = ntohl(saddr->v4addr.s_addr);
+ dnflow.fwa_id.dst_ip = ntohl(daddr->v4addr.s_addr);
+ break;
+ case AF_INET6:
+ dnflow.fwa_id.addr_type = 6;
+ dnflow.fwa_id.src_ip6 = saddr->v6addr;
+ dnflow.fwa_id.dst_ip6 = saddr->v6addr;
+ break;
+ }
if (fwa != NULL) {
dnflow.fwa_oif = fwa->fwa_oif;
dnflow.fwa_oflags = fwa->fwa_oflags;
/*
- * Note that fwa_ro, fwa_dst and fwa_ipoa are
- * actually in a union so the following does work
+ * Note that fwa_ro, fwa_dst and fwa_ipoa are
+ * actually in a union so the following does work
* for both IPv4 and IPv6
*/
dnflow.fwa_ro = fwa->fwa_ro;
dnflow.fwa_unfragpartlen = fwa->fwa_unfragpartlen;
dnflow.fwa_exthdrs = fwa->fwa_exthdrs;
}
-
+
if (af == AF_INET) {
- struct ip *iphdr = mtod(m, struct ip *);
+ struct ip *iphdr = pbuf->pb_data;
NTOHS(iphdr->ip_len);
NTOHS(iphdr->ip_off);
}
- /*
- * Don't need to unlock pf_lock as NET_THREAD_HELD_PF
+ /*
+ * Don't need to unlock pf_lock as NET_THREAD_HELD_PF
* allows for recursive behavior
*/
- ip_dn_io_ptr(m,
- dnflow.fwa_cookie,
- af == AF_INET ?
- direction == PF_IN ? DN_TO_IP_IN : DN_TO_IP_OUT :
- direction == PF_IN ? DN_TO_IP6_IN : DN_TO_IP6_OUT,
- &dnflow, DN_CLIENT_PF);
-
+ m = pbuf_to_mbuf(pbuf, TRUE);
+ if (m != NULL) {
+ ip_dn_io_ptr(m,
+ dnflow.fwa_cookie, (af == AF_INET) ?
+ ((direction == PF_IN) ? DN_TO_IP_IN : DN_TO_IP_OUT) :
+ ((direction == PF_IN) ? DN_TO_IP6_IN : DN_TO_IP6_OUT),
+ &dnflow, DN_CLIENT_PF);
+ }
+
/*
- * The packet is siphoned out by dummynet so return a NULL
- * mbuf so the caller can still return success.
+ * The packet is siphoned out by dummynet so return a NULL
+ * pbuf so the caller can still return success.
*/
- *m0 = NULL;
-
- return (PF_PASS);
+ *pbuf0 = NULL;
+
+ return PF_PASS;
}
- return (PF_PASS);
+ return PF_PASS;
}
#endif /* DUMMYNET */
static int
pf_test_fragment(struct pf_rule **rm, int direction, struct pfi_kif *kif,
- struct mbuf *m, void *h, struct pf_pdesc *pd, struct pf_rule **am,
+ pbuf_t *pbuf, void *h, struct pf_pdesc *pd, struct pf_rule **am,
struct pf_ruleset **rsm)
{
#pragma unused(h)
- struct pf_rule *r, *a = NULL;
- struct pf_ruleset *ruleset = NULL;
- sa_family_t af = pd->af;
- u_short reason;
- int tag = -1;
- int asd = 0;
- int match = 0;
+ struct pf_rule *r, *a = NULL;
+ struct pf_ruleset *ruleset = NULL;
+ sa_family_t af = pd->af;
+ u_short reason;
+ int tag = -1;
+ int asd = 0;
+ int match = 0;
r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
while (r != NULL) {
r->evaluations++;
- if (pfi_kif_match(r->kif, kif) == r->ifnot)
+ if (pfi_kif_match(r->kif, kif) == r->ifnot) {
r = r->skip[PF_SKIP_IFP].ptr;
- else if (r->direction && r->direction != direction)
+ } else if (r->direction && r->direction != direction) {
r = r->skip[PF_SKIP_DIR].ptr;
- else if (r->af && r->af != af)
+ } else if (r->af && r->af != af) {
r = r->skip[PF_SKIP_AF].ptr;
- else if (r->proto && r->proto != pd->proto)
+ } else if (r->proto && r->proto != pd->proto) {
r = r->skip[PF_SKIP_PROTO].ptr;
- else if (PF_MISMATCHAW(&r->src.addr, pd->src, af,
- r->src.neg, kif))
+ } else if (PF_MISMATCHAW(&r->src.addr, pd->src, af,
+ r->src.neg, kif)) {
r = r->skip[PF_SKIP_SRC_ADDR].ptr;
- else if (PF_MISMATCHAW(&r->dst.addr, pd->dst, af,
- r->dst.neg, NULL))
+ } else if (PF_MISMATCHAW(&r->dst.addr, pd->dst, af,
+ r->dst.neg, NULL)) {
r = r->skip[PF_SKIP_DST_ADDR].ptr;
- else if ((r->rule_flag & PFRULE_TOS) && r->tos &&
- !(r->tos & pd->tos))
+ } else if ((r->rule_flag & PFRULE_TOS) && r->tos &&
+ !(r->tos & pd->tos)) {
r = TAILQ_NEXT(r, entries);
- else if ((r->rule_flag & PFRULE_DSCP) && r->tos &&
- !(r->tos & (pd->tos & DSCP_MASK)))
+ } else if ((r->rule_flag & PFRULE_DSCP) && r->tos &&
+ !(r->tos & (pd->tos & DSCP_MASK))) {
r = TAILQ_NEXT(r, entries);
- else if ((r->rule_flag & PFRULE_SC) && r->tos &&
- ((r->tos & SCIDX_MASK) != pd->sc))
+ } else if ((r->rule_flag & PFRULE_SC) && r->tos &&
+ ((r->tos & SCIDX_MASK) != pd->sc)) {
r = TAILQ_NEXT(r, entries);
- else if (r->os_fingerprint != PF_OSFP_ANY)
+ } else if (r->os_fingerprint != PF_OSFP_ANY) {
r = TAILQ_NEXT(r, entries);
- else if (pd->proto == IPPROTO_UDP &&
- (r->src.xport.range.op || r->dst.xport.range.op))
+ } else if (pd->proto == IPPROTO_UDP &&
+ (r->src.xport.range.op || r->dst.xport.range.op)) {
r = TAILQ_NEXT(r, entries);
- else if (pd->proto == IPPROTO_TCP &&
+ } else if (pd->proto == IPPROTO_TCP &&
(r->src.xport.range.op || r->dst.xport.range.op ||
- r->flagset))
+ r->flagset)) {
r = TAILQ_NEXT(r, entries);
- else if ((pd->proto == IPPROTO_ICMP ||
+ } else if ((pd->proto == IPPROTO_ICMP ||
pd->proto == IPPROTO_ICMPV6) &&
- (r->type || r->code))
+ (r->type || r->code)) {
r = TAILQ_NEXT(r, entries);
- else if (r->prob && r->prob <= (RandomULong() % (UINT_MAX - 1) + 1))
+ } else if (r->prob && r->prob <= (RandomULong() % (UINT_MAX - 1) + 1)) {
r = TAILQ_NEXT(r, entries);
- else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+ } else if (r->match_tag && !pf_match_tag(r, pd->pf_mtag, &tag)) {
r = TAILQ_NEXT(r, entries);
- else {
+ } else {
if (r->anchor == NULL) {
match = 1;
*rm = r;
*am = a;
*rsm = ruleset;
- if ((*rm)->quick)
+ if ((*rm)->quick) {
break;
+ }
r = TAILQ_NEXT(r, entries);
- } else
+ } else {
pf_step_into_anchor(&asd, &ruleset,
PF_RULESET_FILTER, &r, &a, &match);
+ }
}
if (r == NULL && pf_step_out_of_anchor(&asd, &ruleset,
- PF_RULESET_FILTER, &r, &a, &match))
+ PF_RULESET_FILTER, &r, &a, &match)) {
break;
+ }
}
r = *rm;
a = *am;
REASON_SET(&reason, PFRES_MATCH);
- if (r->log)
- PFLOG_PACKET(kif, h, m, af, direction, reason, r, a, ruleset,
+ if (r->log) {
+ PFLOG_PACKET(kif, h, pbuf, af, direction, reason, r, a, ruleset,
pd);
+ }
- if (r->action != PF_PASS)
- return (PF_DROP);
+ if (r->action != PF_PASS) {
+ return PF_DROP;
+ }
- if (pf_tag_packet(m, pd->pf_mtag, tag, -1, NULL)) {
+ if (pf_tag_packet(pbuf, pd->pf_mtag, tag, -1, NULL)) {
REASON_SET(&reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
- return (PF_PASS);
+ return PF_PASS;
}
static void
struct tcphdr *th;
struct pf_pptp_state *pptps;
struct pf_pptp_ctrl_msg cm;
- size_t plen;
+ size_t plen, tlen;
struct pf_state *gs;
u_int16_t ct;
u_int16_t *pac_call_id;
u_int8_t *pac_state;
u_int8_t *pns_state;
enum { PF_PPTP_PASS, PF_PPTP_INSERT_GRE, PF_PPTP_REMOVE_GRE } op;
- struct mbuf *m;
+ pbuf_t *pbuf;
struct pf_state_key *sk;
struct pf_state_key *gsk;
struct pf_app_state *gas;
pptps = &sk->app_state->u.pptp;
gs = pptps->grev1_state;
- if (gs)
+ if (gs) {
gs->expire = pf_time_second();
+ }
- m = pd->mp;
- plen = min(sizeof (cm), m->m_pkthdr.len - off);
- if (plen < PF_PPTP_CTRL_MSG_MINSIZE)
+ pbuf = pd->mp;
+ plen = min(sizeof(cm), pbuf->pb_packet_len - off);
+ if (plen < PF_PPTP_CTRL_MSG_MINSIZE) {
return;
+ }
+ tlen = plen - PF_PPTP_CTRL_MSG_MINSIZE;
+ pbuf_copy_data(pbuf, off, plen, &cm);
- m_copydata(m, off, plen, &cm);
-
- if (ntohl(cm.hdr.magic) != PF_PPTP_MAGIC_NUMBER)
+ if (ntohl(cm.hdr.magic) != PF_PPTP_MAGIC_NUMBER) {
return;
- if (ntohs(cm.hdr.type) != 1)
+ }
+ if (ntohs(cm.hdr.type) != 1) {
+ return;
+ }
+
+#define TYPE_LEN_CHECK(_type, _name) \
+ case PF_PPTP_CTRL_TYPE_##_type: \
+ if (tlen < sizeof(struct pf_pptp_ctrl_##_name)) \
+ return; \
+ break;
+
+ switch (cm.ctrl.type) {
+ TYPE_LEN_CHECK(START_REQ, start_req);
+ TYPE_LEN_CHECK(START_RPY, start_rpy);
+ TYPE_LEN_CHECK(STOP_REQ, stop_req);
+ TYPE_LEN_CHECK(STOP_RPY, stop_rpy);
+ TYPE_LEN_CHECK(ECHO_REQ, echo_req);
+ TYPE_LEN_CHECK(ECHO_RPY, echo_rpy);
+ TYPE_LEN_CHECK(CALL_OUT_REQ, call_out_req);
+ TYPE_LEN_CHECK(CALL_OUT_RPY, call_out_rpy);
+ TYPE_LEN_CHECK(CALL_IN_1ST, call_in_1st);
+ TYPE_LEN_CHECK(CALL_IN_2ND, call_in_2nd);
+ TYPE_LEN_CHECK(CALL_IN_3RD, call_in_3rd);
+ TYPE_LEN_CHECK(CALL_CLR, call_clr);
+ TYPE_LEN_CHECK(CALL_DISC, call_disc);
+ TYPE_LEN_CHECK(ERROR, error);
+ TYPE_LEN_CHECK(SET_LINKINFO, set_linkinfo);
+ default:
return;
+ }
+#undef TYPE_LEN_CHECK
if (!gs) {
gs = pool_get(&pf_state_pl, PR_WAITOK);
- if (!gs)
+ if (!gs) {
return;
+ }
- memcpy(gs, s, sizeof (*gs));
+ memcpy(gs, s, sizeof(*gs));
- memset(&gs->entry_id, 0, sizeof (gs->entry_id));
- memset(&gs->entry_list, 0, sizeof (gs->entry_list));
+ memset(&gs->entry_id, 0, sizeof(gs->entry_id));
+ memset(&gs->entry_list, 0, sizeof(gs->entry_list));
TAILQ_INIT(&gs->unlink_hooks);
gs->rt_kif = NULL;
return;
}
- memcpy(&gsk->lan, &sk->lan, sizeof (gsk->lan));
- memcpy(&gsk->gwy, &sk->gwy, sizeof (gsk->gwy));
- memcpy(&gsk->ext, &sk->ext, sizeof (gsk->ext));
- gsk->af = sk->af;
+ memcpy(&gsk->lan, &sk->lan, sizeof(gsk->lan));
+ memcpy(&gsk->gwy, &sk->gwy, sizeof(gsk->gwy));
+ memcpy(&gsk->ext_lan, &sk->ext_lan, sizeof(gsk->ext_lan));
+ memcpy(&gsk->ext_gwy, &sk->ext_gwy, sizeof(gsk->ext_gwy));
+ gsk->af_lan = sk->af_lan;
+ gsk->af_gwy = sk->af_gwy;
gsk->proto = IPPROTO_GRE;
gsk->proto_variant = PF_GRE_PPTP_VARIANT;
gsk->app_state = gas;
gsk->lan.xport.call_id = 0;
gsk->gwy.xport.call_id = 0;
- gsk->ext.xport.call_id = 0;
+ gsk->ext_lan.xport.call_id = 0;
+ gsk->ext_gwy.xport.call_id = 0;
gsk->flowsrc = FLOWSRC_PF;
gsk->flowhash = pf_calc_state_key_flowhash(gsk);
- memset(gas, 0, sizeof (*gas));
+ memset(gas, 0, sizeof(*gas));
gas->u.grev1.pptp_state = s;
STATE_INC_COUNTERS(gs);
pptps->grev1_state = gs;
switch (sk->direction) {
case PF_IN:
- pns_call_id = &gsk->ext.xport.call_id;
+ pns_call_id = &gsk->ext_lan.xport.call_id;
pns_state = &gs->dst.state;
pac_call_id = &gsk->lan.xport.call_id;
pac_state = &gs->src.state;
case PF_OUT:
pns_call_id = &gsk->lan.xport.call_id;
pns_state = &gs->src.state;
- pac_call_id = &gsk->ext.xport.call_id;
+ pac_call_id = &gsk->ext_lan.xport.call_id;
pac_state = &gs->dst.state;
break;
case PF_PPTP_CTRL_TYPE_CALL_OUT_REQ:
*pns_call_id = cm.msg.call_out_req.call_id;
*pns_state = PFGRE1S_INITIATING;
- if (s->nat_rule.ptr && pns_call_id == &gsk->lan.xport.call_id)
+ if (s->nat_rule.ptr && pns_call_id == &gsk->lan.xport.call_id) {
spoof_call_id = &cm.msg.call_out_req.call_id;
+ }
break;
case PF_PPTP_CTRL_TYPE_CALL_OUT_RPY:
*pac_call_id = cm.msg.call_out_rpy.call_id;
- if (s->nat_rule.ptr)
+ if (s->nat_rule.ptr) {
spoof_call_id =
(pac_call_id == &gsk->lan.xport.call_id) ?
&cm.msg.call_out_rpy.call_id :
&cm.msg.call_out_rpy.peer_call_id;
+ }
if (gs->timeout == PFTM_UNLINKED) {
*pac_state = PFGRE1S_INITIATING;
op = PF_PPTP_INSERT_GRE;
case PF_PPTP_CTRL_TYPE_CALL_IN_1ST:
*pns_call_id = cm.msg.call_in_1st.call_id;
*pns_state = PFGRE1S_INITIATING;
- if (s->nat_rule.ptr && pns_call_id == &gsk->lan.xport.call_id)
+ if (s->nat_rule.ptr && pns_call_id == &gsk->lan.xport.call_id) {
spoof_call_id = &cm.msg.call_in_1st.call_id;
+ }
break;
case PF_PPTP_CTRL_TYPE_CALL_IN_2ND:
*pac_call_id = cm.msg.call_in_2nd.call_id;
*pac_state = PFGRE1S_INITIATING;
- if (s->nat_rule.ptr)
+ if (s->nat_rule.ptr) {
spoof_call_id =
(pac_call_id == &gsk->lan.xport.call_id) ?
&cm.msg.call_in_2nd.call_id :
&cm.msg.call_in_2nd.peer_call_id;
+ }
break;
case PF_PPTP_CTRL_TYPE_CALL_IN_3RD:
- if (s->nat_rule.ptr && pns_call_id == &gsk->lan.xport.call_id)
+ if (s->nat_rule.ptr && pns_call_id == &gsk->lan.xport.call_id) {
spoof_call_id = &cm.msg.call_in_3rd.call_id;
+ }
if (cm.msg.call_in_3rd.call_id != *pns_call_id) {
break;
}
- if (gs->timeout == PFTM_UNLINKED)
+ if (gs->timeout == PFTM_UNLINKED) {
op = PF_PPTP_INSERT_GRE;
+ }
break;
case PF_PPTP_CTRL_TYPE_CALL_CLR:
- if (cm.msg.call_clr.call_id != *pns_call_id)
+ if (cm.msg.call_clr.call_id != *pns_call_id) {
op = PF_PPTP_REMOVE_GRE;
+ }
break;
case PF_PPTP_CTRL_TYPE_CALL_DISC:
- if (cm.msg.call_clr.call_id != *pac_call_id)
+ if (cm.msg.call_clr.call_id != *pac_call_id) {
op = PF_PPTP_REMOVE_GRE;
+ }
break;
case PF_PPTP_CTRL_TYPE_ERROR:
- if (s->nat_rule.ptr && pns_call_id == &gsk->lan.xport.call_id)
+ if (s->nat_rule.ptr && pns_call_id == &gsk->lan.xport.call_id) {
spoof_call_id = &cm.msg.error.peer_call_id;
+ }
break;
case PF_PPTP_CTRL_TYPE_SET_LINKINFO:
- if (s->nat_rule.ptr && pac_call_id == &gsk->lan.xport.call_id)
+ if (s->nat_rule.ptr && pac_call_id == &gsk->lan.xport.call_id) {
spoof_call_id = &cm.msg.set_linkinfo.peer_call_id;
+ }
break;
default:
int n = 0;
struct pf_state_key_cmp key;
- key.af = gsk->af;
+ key.af_gwy = gsk->af_gwy;
key.proto = IPPROTO_GRE;
key.proto_variant = PF_GRE_PPTP_VARIANT;
- PF_ACPY(&key.gwy.addr, &gsk->gwy.addr, key.af);
- PF_ACPY(&key.ext.addr, &gsk->ext.addr, key.af);
+ PF_ACPY(&key.gwy.addr, &gsk->gwy.addr, key.af_gwy);
+ PF_ACPY(&key.ext_gwy.addr, &gsk->ext_gwy.addr, key.af_gwy);
key.gwy.xport.call_id = gsk->gwy.xport.call_id;
- key.ext.xport.call_id = gsk->ext.xport.call_id;
+ key.ext_gwy.xport.call_id = gsk->ext_gwy.xport.call_id;
do {
call_id = htonl(random());
} while (!call_id);
while (pf_find_state_all(&key, PF_IN, 0)) {
call_id = ntohs(call_id);
--call_id;
- if (--call_id == 0) call_id = 0xffff;
+ if (--call_id == 0) {
+ call_id = 0xffff;
+ }
call_id = htons(call_id);
key.gwy.xport.call_id = call_id;
gsk->lan.xport.call_id, gsk->gwy.xport.call_id, 0);
}
- m = pf_lazy_makewritable(pd, m, off + plen);
- if (!m) {
+ if (pf_lazy_makewritable(pd, pbuf, off + plen) == NULL) {
pptps->grev1_state = NULL;
STATE_DEC_COUNTERS(gs);
pool_put(&pf_state_pl, gs);
return;
}
- m_copyback(m, off, plen, &cm);
+ pbuf_copy_back(pbuf, off, plen, &cm);
}
switch (op) {
gs->src.state = gs->dst.state = PFGRE1S_NO_TRAFFIC;
gsk->lan.xport.call_id = 0;
gsk->gwy.xport.call_id = 0;
- gsk->ext.xport.call_id = 0;
+ gsk->ext_lan.xport.call_id = 0;
+ gsk->ext_gwy.xport.call_id = 0;
gs->id = gs->creatorid = 0;
break;
++gs->nat_src_node->states;
VERIFY(gs->nat_src_node->states != 0);
}
- pf_set_rt_ifp(gs, &sk->lan.addr);
+ pf_set_rt_ifp(gs, &sk->lan.addr, sk->af_lan);
if (pf_insert_state(BOUND_IFACE(s->rule.ptr, kif), gs)) {
-
/*
* <jhw@apple.com>
* FIX ME: insertion can fail when multiple PNS
* that fixing this is a low priority.
*/
pptps->grev1_state = NULL;
- pd->lmw = -1; /* Force PF_DROP on PFRES_MEMORY */
+ pd->lmw = -1; /* Force PF_DROP on PFRES_MEMORY */
pf_src_tree_remove_state(gs);
STATE_DEC_COUNTERS(gs);
pool_put(&pf_state_pl, gs);
if (grev1s) {
struct pf_app_state *gas = grev1s->state_key->app_state;
- if (grev1s->timeout < PFTM_MAX)
+ if (grev1s->timeout < PFTM_MAX) {
grev1s->timeout = PFTM_PURGE;
+ }
gas->u.grev1.pptp_state = NULL;
as->u.pptp.grev1_state = NULL;
}
pf_ike_compare(struct pf_app_state *a, struct pf_app_state *b)
{
int64_t d = a->u.ike.cookie - b->u.ike.cookie;
- return ((d > 0) ? 1 : ((d < 0) ? -1 : 0));
+ return (d > 0) ? 1 : ((d < 0) ? -1 : 0);
+}
+
+static int
+pf_do_nat64(struct pf_state_key *sk, struct pf_pdesc *pd, pbuf_t *pbuf,
+ int off)
+{
+ if (pd->af == AF_INET) {
+ if (pd->af != sk->af_lan) {
+ pd->ndaddr = sk->lan.addr;
+ pd->naddr = sk->ext_lan.addr;
+ } else {
+ pd->naddr = sk->gwy.addr;
+ pd->ndaddr = sk->ext_gwy.addr;
+ }
+ return pf_nat64_ipv4(pbuf, off, pd);
+ } else if (pd->af == AF_INET6) {
+ if (pd->af != sk->af_lan) {
+ pd->ndaddr = sk->lan.addr;
+ pd->naddr = sk->ext_lan.addr;
+ } else {
+ pd->naddr = sk->gwy.addr;
+ pd->ndaddr = sk->ext_gwy.addr;
+ }
+ return pf_nat64_ipv6(pbuf, off, pd);
+ }
+ return PF_DROP;
}
static int
pf_test_state_tcp(struct pf_state **state, int direction, struct pfi_kif *kif,
- struct mbuf *m, int off, void *h, struct pf_pdesc *pd,
+ pbuf_t *pbuf, int off, void *h, struct pf_pdesc *pd,
u_short *reason)
{
#pragma unused(h)
- struct pf_state_key_cmp key;
- struct tcphdr *th = pd->hdr.tcp;
- u_int16_t win = ntohs(th->th_win);
- u_int32_t ack, end, seq, orig_seq;
- u_int8_t sws, dws;
- int ackskew;
- int copyback = 0;
- struct pf_state_peer *src, *dst;
+ struct pf_state_key_cmp key;
+ struct tcphdr *th = pd->hdr.tcp;
+ u_int16_t win = ntohs(th->th_win);
+ u_int32_t ack, end, seq, orig_seq;
+ u_int8_t sws, dws;
+ int ackskew;
+ int copyback = 0;
+ struct pf_state_peer *src, *dst;
+ struct pf_state_key *sk;
key.app_state = 0;
- key.af = pd->af;
key.proto = IPPROTO_TCP;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd->src, key.af);
- PF_ACPY(&key.gwy.addr, pd->dst, key.af);
- key.ext.xport.port = th->th_sport;
- key.gwy.xport.port = th->th_dport;
- } else {
- PF_ACPY(&key.lan.addr, pd->src, key.af);
- PF_ACPY(&key.ext.addr, pd->dst, key.af);
- key.lan.xport.port = th->th_sport;
- key.ext.xport.port = th->th_dport;
- }
+ key.af_lan = key.af_gwy = pd->af;
+
+ /*
+ * For NAT64 the first time rule search and state creation
+ * is done on the incoming side only.
+ * Once the state gets created, NAT64's LAN side (ipv6) will
+ * not be able to find the state in ext-gwy tree as that normally
+ * is intended to be looked up for incoming traffic from the
+ * WAN side.
+ * Therefore to handle NAT64 case we init keys here for both
+ * lan-ext as well as ext-gwy trees.
+ * In the state lookup we attempt a lookup on both trees if
+ * first one does not return any result and return a match if
+ * the match state's was created by NAT64 rule.
+ */
+ PF_ACPY(&key.ext_gwy.addr, pd->src, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd->dst, key.af_gwy);
+ key.ext_gwy.xport.port = th->th_sport;
+ key.gwy.xport.port = th->th_dport;
+
+ PF_ACPY(&key.lan.addr, pd->src, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd->dst, key.af_lan);
+ key.lan.xport.port = th->th_sport;
+ key.ext_lan.xport.port = th->th_dport;
STATE_LOOKUP();
- if (direction == (*state)->state_key->direction) {
+ sk = (*state)->state_key;
+ /*
+ * In case of NAT64 the translation is first applied on the LAN
+ * side. Therefore for stack's address family comparison
+ * we use sk->af_lan.
+ */
+ if ((direction == sk->direction) && (pd->af == sk->af_lan)) {
src = &(*state)->src;
dst = &(*state)->dst;
} else {
dst = &(*state)->src;
}
- if ((*state)->src.state == PF_TCPS_PROXY_SRC) {
- if (direction != (*state)->state_key->direction) {
+ if (src->state == PF_TCPS_PROXY_SRC) {
+ if (direction != sk->direction) {
REASON_SET(reason, PFRES_SYNPROXY);
- return (PF_SYNPROXY_DROP);
+ return PF_SYNPROXY_DROP;
}
if (th->th_flags & TH_SYN) {
- if (ntohl(th->th_seq) != (*state)->src.seqlo) {
+ if (ntohl(th->th_seq) != src->seqlo) {
REASON_SET(reason, PFRES_SYNPROXY);
- return (PF_DROP);
+ return PF_DROP;
}
pf_send_tcp((*state)->rule.ptr, pd->af, pd->dst,
pd->src, th->th_dport, th->th_sport,
- (*state)->src.seqhi, ntohl(th->th_seq) + 1,
- TH_SYN|TH_ACK, 0, (*state)->src.mss, 0, 1,
+ src->seqhi, ntohl(th->th_seq) + 1,
+ TH_SYN | TH_ACK, 0, src->mss, 0, 1,
0, NULL, NULL);
REASON_SET(reason, PFRES_SYNPROXY);
- return (PF_SYNPROXY_DROP);
+ return PF_SYNPROXY_DROP;
} else if (!(th->th_flags & TH_ACK) ||
- (ntohl(th->th_ack) != (*state)->src.seqhi + 1) ||
- (ntohl(th->th_seq) != (*state)->src.seqlo + 1)) {
+ (ntohl(th->th_ack) != src->seqhi + 1) ||
+ (ntohl(th->th_seq) != src->seqlo + 1)) {
REASON_SET(reason, PFRES_SYNPROXY);
- return (PF_DROP);
+ return PF_DROP;
} else if ((*state)->src_node != NULL &&
pf_src_connlimit(state)) {
REASON_SET(reason, PFRES_SRCLIMIT);
- return (PF_DROP);
- } else
- (*state)->src.state = PF_TCPS_PROXY_DST;
+ return PF_DROP;
+ } else {
+ src->state = PF_TCPS_PROXY_DST;
+ }
}
- if ((*state)->src.state == PF_TCPS_PROXY_DST) {
+ if (src->state == PF_TCPS_PROXY_DST) {
struct pf_state_host *psrc, *pdst;
if (direction == PF_OUT) {
- psrc = &(*state)->state_key->gwy;
- pdst = &(*state)->state_key->ext;
+ psrc = &sk->gwy;
+ pdst = &sk->ext_gwy;
} else {
- psrc = &(*state)->state_key->ext;
- pdst = &(*state)->state_key->lan;
+ psrc = &sk->ext_lan;
+ pdst = &sk->lan;
}
- if (direction == (*state)->state_key->direction) {
- if (((th->th_flags & (TH_SYN|TH_ACK)) != TH_ACK) ||
- (ntohl(th->th_ack) != (*state)->src.seqhi + 1) ||
- (ntohl(th->th_seq) != (*state)->src.seqlo + 1)) {
+ if (direction == sk->direction) {
+ if (((th->th_flags & (TH_SYN | TH_ACK)) != TH_ACK) ||
+ (ntohl(th->th_ack) != src->seqhi + 1) ||
+ (ntohl(th->th_seq) != src->seqlo + 1)) {
REASON_SET(reason, PFRES_SYNPROXY);
- return (PF_DROP);
+ return PF_DROP;
+ }
+ src->max_win = MAX(ntohs(th->th_win), 1);
+ if (dst->seqhi == 1) {
+ dst->seqhi = htonl(random());
}
- (*state)->src.max_win = MAX(ntohs(th->th_win), 1);
- if ((*state)->dst.seqhi == 1)
- (*state)->dst.seqhi = htonl(random());
pf_send_tcp((*state)->rule.ptr, pd->af, &psrc->addr,
&pdst->addr, psrc->xport.port, pdst->xport.port,
- (*state)->dst.seqhi, 0, TH_SYN, 0,
- (*state)->src.mss, 0, 0, (*state)->tag, NULL, NULL);
+ dst->seqhi, 0, TH_SYN, 0,
+ src->mss, 0, 0, (*state)->tag, NULL, NULL);
REASON_SET(reason, PFRES_SYNPROXY);
- return (PF_SYNPROXY_DROP);
- } else if (((th->th_flags & (TH_SYN|TH_ACK)) !=
- (TH_SYN|TH_ACK)) ||
- (ntohl(th->th_ack) != (*state)->dst.seqhi + 1)) {
+ return PF_SYNPROXY_DROP;
+ } else if (((th->th_flags & (TH_SYN | TH_ACK)) !=
+ (TH_SYN | TH_ACK)) ||
+ (ntohl(th->th_ack) != dst->seqhi + 1)) {
REASON_SET(reason, PFRES_SYNPROXY);
- return (PF_DROP);
+ return PF_DROP;
} else {
- (*state)->dst.max_win = MAX(ntohs(th->th_win), 1);
- (*state)->dst.seqlo = ntohl(th->th_seq);
+ dst->max_win = MAX(ntohs(th->th_win), 1);
+ dst->seqlo = ntohl(th->th_seq);
pf_send_tcp((*state)->rule.ptr, pd->af, pd->dst,
pd->src, th->th_dport, th->th_sport,
ntohl(th->th_ack), ntohl(th->th_seq) + 1,
- TH_ACK, (*state)->src.max_win, 0, 0, 0,
+ TH_ACK, src->max_win, 0, 0, 0,
(*state)->tag, NULL, NULL);
pf_send_tcp((*state)->rule.ptr, pd->af, &psrc->addr,
&pdst->addr, psrc->xport.port, pdst->xport.port,
- (*state)->src.seqhi + 1, (*state)->src.seqlo + 1,
- TH_ACK, (*state)->dst.max_win, 0, 0, 1,
+ src->seqhi + 1, src->seqlo + 1,
+ TH_ACK, dst->max_win, 0, 0, 1,
0, NULL, NULL);
- (*state)->src.seqdiff = (*state)->dst.seqhi -
- (*state)->src.seqlo;
- (*state)->dst.seqdiff = (*state)->src.seqhi -
- (*state)->dst.seqlo;
- (*state)->src.seqhi = (*state)->src.seqlo +
- (*state)->dst.max_win;
- (*state)->dst.seqhi = (*state)->dst.seqlo +
- (*state)->src.max_win;
- (*state)->src.wscale = (*state)->dst.wscale = 0;
- (*state)->src.state = (*state)->dst.state =
+ src->seqdiff = dst->seqhi -
+ src->seqlo;
+ dst->seqdiff = src->seqhi -
+ dst->seqlo;
+ src->seqhi = src->seqlo +
+ dst->max_win;
+ dst->seqhi = dst->seqlo +
+ src->max_win;
+ src->wscale = dst->wscale = 0;
+ src->state = dst->state =
TCPS_ESTABLISHED;
REASON_SET(reason, PFRES_SYNPROXY);
- return (PF_SYNPROXY_DROP);
+ return PF_SYNPROXY_DROP;
}
}
- if (((th->th_flags & (TH_SYN|TH_ACK)) == TH_SYN) &&
+ if (((th->th_flags & (TH_SYN | TH_ACK)) == TH_SYN) &&
dst->state >= TCPS_FIN_WAIT_2 &&
src->state >= TCPS_FIN_WAIT_2) {
if (pf_status.debug >= PF_DEBUG_MISC) {
printf("\n");
}
/* XXX make sure it's the same direction ?? */
- (*state)->src.state = (*state)->dst.state = TCPS_CLOSED;
+ src->state = dst->state = TCPS_CLOSED;
pf_unlink_state(*state);
*state = NULL;
- return (PF_DROP);
+ return PF_DROP;
}
if ((th->th_flags & TH_SYN) == 0) {
(src->wscale & PF_WSCALE_MASK) : TCP_MAX_WINSHIFT;
dws = (dst->wscale & PF_WSCALE_FLAG) ?
(dst->wscale & PF_WSCALE_MASK) : TCP_MAX_WINSHIFT;
- }
- else
+ } else {
sws = dws = 0;
+ }
/*
* Sequence tracking algorithm from Guido van Rooij's paper:
if ((pd->flags & PFDESC_TCP_NORM || dst->scrub) &&
src->scrub == NULL) {
- if (pf_normalize_tcp_init(m, off, pd, th, src, dst)) {
+ if (pf_normalize_tcp_init(pbuf, off, pd, th, src, dst)) {
REASON_SET(reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
}
/* Deferred generation of sequence number modulator */
if (dst->seqdiff && !src->seqdiff) {
/* use random iss for the TCP server */
- while ((src->seqdiff = random() - seq) == 0)
+ while ((src->seqdiff = random() - seq) == 0) {
;
+ }
ack = ntohl(th->th_ack) - dst->seqdiff;
pf_change_a(&th->th_seq, &th->th_sum, htonl(seq +
src->seqdiff), 0);
pf_change_a(&th->th_ack, &th->th_sum, htonl(ack), 0);
- copyback = off + sizeof (*th);
+ copyback = off + sizeof(*th);
} else {
ack = ntohl(th->th_ack);
}
if (th->th_flags & TH_SYN) {
end++;
if (dst->wscale & PF_WSCALE_FLAG) {
- src->wscale = pf_get_wscale(m, off, th->th_off,
- pd->af);
+ src->wscale = pf_get_wscale(pbuf, off,
+ th->th_off, pd->af);
if (src->wscale & PF_WSCALE_FLAG) {
/*
* Remove scale factor from initial
}
}
}
- if (th->th_flags & TH_FIN)
+ if (th->th_flags & TH_FIN) {
end++;
+ }
src->seqlo = seq;
- if (src->state < TCPS_SYN_SENT)
+ if (src->state < TCPS_SYN_SENT) {
src->state = TCPS_SYN_SENT;
+ }
/*
* May need to slide the window (seqhi may have been set by
*/
if (src->seqhi == 1 ||
SEQ_GEQ(end + MAX(1, (u_int32_t)dst->max_win << dws),
- src->seqhi))
+ src->seqhi)) {
src->seqhi = end + MAX(1, (u_int32_t)dst->max_win << dws);
- if (win > src->max_win)
+ }
+ if (win > src->max_win) {
src->max_win = win;
-
+ }
} else {
ack = ntohl(th->th_ack) - dst->seqdiff;
if (src->seqdiff) {
pf_change_a(&th->th_seq, &th->th_sum, htonl(seq +
src->seqdiff), 0);
pf_change_a(&th->th_ack, &th->th_sum, htonl(ack), 0);
- copyback = off+ sizeof (*th);
+ copyback = off + sizeof(*th);
}
end = seq + pd->p_len;
- if (th->th_flags & TH_SYN)
+ if (th->th_flags & TH_SYN) {
end++;
- if (th->th_flags & TH_FIN)
+ }
+ if (th->th_flags & TH_FIN) {
end++;
+ }
}
if ((th->th_flags & TH_ACK) == 0) {
/* Let it pass through the ack skew check */
ack = dst->seqlo;
} else if ((ack == 0 &&
- (th->th_flags & (TH_ACK|TH_RST)) == (TH_ACK|TH_RST)) ||
+ (th->th_flags & (TH_ACK | TH_RST)) == (TH_ACK | TH_RST)) ||
/* broken tcp stacks do not set ack */
(dst->state < TCPS_SYN_SENT)) {
/*
* spoof into a TCP connection won't bother blindly sending SACK
* options anyway.
*/
- if (dst->seqdiff && (th->th_off << 2) > (int)sizeof (struct tcphdr)) {
- copyback = pf_modulate_sack(m, off, pd, th, dst);
+ if (dst->seqdiff && (th->th_off << 2) > (int)sizeof(struct tcphdr)) {
+ copyback = pf_modulate_sack(pbuf, off, pd, th, dst);
if (copyback == -1) {
REASON_SET(reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
- m = pd->mp;
+ pbuf = pd->mp; // XXXSCW: Why?
}
-#define MAXACKWINDOW (0xffff + 1500) /* 1500 is an arbitrary fudge factor */
+#define MAXACKWINDOW (0xffff + 1500) /* 1500 is an arbitrary fudge factor */
if (SEQ_GEQ(src->seqhi, end) &&
/* Last octet inside other's window space */
SEQ_GEQ(seq, src->seqlo - ((u_int32_t)dst->max_win << dws)) &&
((th->th_flags & TH_RST) == 0 || orig_seq == src->seqlo ||
(orig_seq == src->seqlo + 1) || (orig_seq + 1 == src->seqlo) ||
(pd->flags & PFDESC_IP_REAS) == 0)) {
- /* Require an exact/+1 sequence match on resets when possible */
+ /* Require an exact/+1 sequence match on resets when possible */
if (dst->scrub || src->scrub) {
- if (pf_normalize_tcp_stateful(m, off, pd, reason, th,
- *state, src, dst, ©back))
- return (PF_DROP);
+ if (pf_normalize_tcp_stateful(pbuf, off, pd, reason, th,
+ *state, src, dst, ©back)) {
+ return PF_DROP;
+ }
- m = pd->mp;
+ pbuf = pd->mp; // XXXSCW: Why?
}
/* update max window */
- if (src->max_win < win)
+ if (src->max_win < win) {
src->max_win = win;
+ }
/* synchronize sequencing */
- if (SEQ_GT(end, src->seqlo))
+ if (SEQ_GT(end, src->seqlo)) {
src->seqlo = end;
+ }
/* slide the window of what the other end can send */
- if (SEQ_GEQ(ack + ((u_int32_t)win << sws), dst->seqhi))
+ if (SEQ_GEQ(ack + ((u_int32_t)win << sws), dst->seqhi)) {
dst->seqhi = ack + MAX(((u_int32_t)win << sws), 1);
+ }
/* update states */
- if (th->th_flags & TH_SYN)
- if (src->state < TCPS_SYN_SENT)
+ if (th->th_flags & TH_SYN) {
+ if (src->state < TCPS_SYN_SENT) {
src->state = TCPS_SYN_SENT;
- if (th->th_flags & TH_FIN)
- if (src->state < TCPS_CLOSING)
+ }
+ }
+ if (th->th_flags & TH_FIN) {
+ if (src->state < TCPS_CLOSING) {
src->state = TCPS_CLOSING;
+ }
+ }
if (th->th_flags & TH_ACK) {
if (dst->state == TCPS_SYN_SENT) {
dst->state = TCPS_ESTABLISHED;
(*state)->src_node != NULL &&
pf_src_connlimit(state)) {
REASON_SET(reason, PFRES_SRCLIMIT);
- return (PF_DROP);
+ return PF_DROP;
}
- } else if (dst->state == TCPS_CLOSING)
+ } else if (dst->state == TCPS_CLOSING) {
dst->state = TCPS_FIN_WAIT_2;
+ }
}
- if (th->th_flags & TH_RST)
+ if (th->th_flags & TH_RST) {
src->state = dst->state = TCPS_TIME_WAIT;
+ }
/* update expire time */
(*state)->expire = pf_time_second();
if (src->state >= TCPS_FIN_WAIT_2 &&
- dst->state >= TCPS_FIN_WAIT_2)
+ dst->state >= TCPS_FIN_WAIT_2) {
(*state)->timeout = PFTM_TCP_CLOSED;
- else if (src->state >= TCPS_CLOSING &&
- dst->state >= TCPS_CLOSING)
+ } else if (src->state >= TCPS_CLOSING &&
+ dst->state >= TCPS_CLOSING) {
(*state)->timeout = PFTM_TCP_FIN_WAIT;
- else if (src->state < TCPS_ESTABLISHED ||
- dst->state < TCPS_ESTABLISHED)
+ } else if (src->state < TCPS_ESTABLISHED ||
+ dst->state < TCPS_ESTABLISHED) {
(*state)->timeout = PFTM_TCP_OPENING;
- else if (src->state >= TCPS_CLOSING ||
- dst->state >= TCPS_CLOSING)
+ } else if (src->state >= TCPS_CLOSING ||
+ dst->state >= TCPS_CLOSING) {
(*state)->timeout = PFTM_TCP_CLOSING;
- else
+ } else {
(*state)->timeout = PFTM_TCP_ESTABLISHED;
+ }
/* Fall through to PASS packet */
-
} else if ((dst->state < TCPS_SYN_SENT ||
dst->state >= TCPS_FIN_WAIT_2 || src->state >= TCPS_FIN_WAIT_2) &&
SEQ_GEQ(src->seqhi + MAXACKWINDOW, end) &&
/* Within a window forward of the originating packet */
SEQ_GEQ(seq, src->seqlo - MAXACKWINDOW)) {
- /* Within a window backward of the originating packet */
+ /* Within a window backward of the originating packet */
/*
* This currently handles three situations:
pd->p_len, ackskew, (*state)->packets[0],
(*state)->packets[1],
direction == PF_IN ? "in" : "out",
- direction == (*state)->state_key->direction ?
+ direction == sk->direction ?
"fwd" : "rev");
}
if (dst->scrub || src->scrub) {
- if (pf_normalize_tcp_stateful(m, off, pd, reason, th,
- *state, src, dst, ©back))
- return (PF_DROP);
- m = pd->mp;
+ if (pf_normalize_tcp_stateful(pbuf, off, pd, reason, th,
+ *state, src, dst, ©back)) {
+ return PF_DROP;
+ }
+ pbuf = pd->mp; // XXXSCW: Why?
}
/* update max window */
- if (src->max_win < win)
+ if (src->max_win < win) {
src->max_win = win;
+ }
/* synchronize sequencing */
- if (SEQ_GT(end, src->seqlo))
+ if (SEQ_GT(end, src->seqlo)) {
src->seqlo = end;
+ }
/* slide the window of what the other end can send */
- if (SEQ_GEQ(ack + ((u_int32_t)win << sws), dst->seqhi))
+ if (SEQ_GEQ(ack + ((u_int32_t)win << sws), dst->seqhi)) {
dst->seqhi = ack + MAX(((u_int32_t)win << sws), 1);
+ }
/*
* Cannot set dst->seqhi here since this could be a shotgunned
* SYN and not an already established connection.
*/
- if (th->th_flags & TH_FIN)
- if (src->state < TCPS_CLOSING)
+ if (th->th_flags & TH_FIN) {
+ if (src->state < TCPS_CLOSING) {
src->state = TCPS_CLOSING;
- if (th->th_flags & TH_RST)
+ }
+ }
+ if (th->th_flags & TH_RST) {
src->state = dst->state = TCPS_TIME_WAIT;
+ }
/* Fall through to PASS packet */
-
} else {
- if ((*state)->dst.state == TCPS_SYN_SENT &&
- (*state)->src.state == TCPS_SYN_SENT) {
+ if (dst->state == TCPS_SYN_SENT &&
+ src->state == TCPS_SYN_SENT) {
/* Send RST for state mismatches during handshake */
- if (!(th->th_flags & TH_RST))
+ if (!(th->th_flags & TH_RST)) {
pf_send_tcp((*state)->rule.ptr, pd->af,
pd->dst, pd->src, th->th_dport,
th->th_sport, ntohl(th->th_ack), 0,
TH_RST, 0, 0,
(*state)->rule.ptr->return_ttl, 1, 0,
pd->eh, kif->pfik_ifp);
+ }
src->seqlo = 0;
src->seqhi = 1;
src->max_win = 1;
(unsigned int)sws, (unsigned int)dws,
(*state)->packets[0], (*state)->packets[1],
direction == PF_IN ? "in" : "out",
- direction == (*state)->state_key->direction ?
+ direction == sk->direction ?
"fwd" : "rev");
printf("pf: State failure on: %c %c %c %c | %c %c\n",
SEQ_GEQ(src->seqhi, end) ? ' ' : '1',
SEQ_GEQ(seq, src->seqlo - MAXACKWINDOW) ?' ' :'6');
}
REASON_SET(reason, PFRES_BADSTATE);
- return (PF_DROP);
+ return PF_DROP;
}
/* Any packets which have gotten here are to be passed */
- if ((*state)->state_key->app_state &&
- (*state)->state_key->app_state->handler) {
- (*state)->state_key->app_state->handler(*state, direction,
+ if (sk->app_state &&
+ sk->app_state->handler) {
+ sk->app_state->handler(*state, direction,
off + (th->th_off << 2), pd, kif);
if (pd->lmw < 0) {
REASON_SET(reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
- m = pd->mp;
+ pbuf = pd->mp; // XXXSCW: Why?
}
/* translate source/destination address, if necessary */
- if (STATE_TRANSLATE((*state)->state_key)) {
- if (direction == PF_OUT)
+ if (STATE_TRANSLATE(sk)) {
+ pd->naf = (pd->af == sk->af_lan) ? sk->af_gwy : sk->af_lan;
+
+ if (direction == PF_OUT) {
pf_change_ap(direction, pd->mp, pd->src, &th->th_sport,
- pd->ip_sum, &th->th_sum,
- &(*state)->state_key->gwy.addr,
- (*state)->state_key->gwy.xport.port, 0, pd->af);
- else
- pf_change_ap(direction, pd->mp, pd->dst, &th->th_dport,
- pd->ip_sum, &th->th_sum,
- &(*state)->state_key->lan.addr,
- (*state)->state_key->lan.xport.port, 0, pd->af);
- copyback = off + sizeof (*th);
+ pd->ip_sum, &th->th_sum, &sk->gwy.addr,
+ sk->gwy.xport.port, 0, pd->af, pd->naf, 1);
+ } else {
+ if (pd->af != pd->naf) {
+ if (pd->af == sk->af_gwy) {
+ pf_change_ap(direction, pd->mp, pd->dst,
+ &th->th_dport, pd->ip_sum,
+ &th->th_sum, &sk->lan.addr,
+ sk->lan.xport.port, 0,
+ pd->af, pd->naf, 0);
+
+ pf_change_ap(direction, pd->mp, pd->src,
+ &th->th_sport, pd->ip_sum,
+ &th->th_sum, &sk->ext_lan.addr,
+ th->th_sport, 0, pd->af,
+ pd->naf, 0);
+ } else {
+ pf_change_ap(direction, pd->mp, pd->dst,
+ &th->th_dport, pd->ip_sum,
+ &th->th_sum, &sk->ext_gwy.addr,
+ th->th_dport, 0, pd->af,
+ pd->naf, 0);
+
+ pf_change_ap(direction, pd->mp, pd->src,
+ &th->th_sport, pd->ip_sum,
+ &th->th_sum, &sk->gwy.addr,
+ sk->gwy.xport.port, 0, pd->af,
+ pd->naf, 0);
+ }
+ } else {
+ pf_change_ap(direction, pd->mp, pd->dst,
+ &th->th_dport, pd->ip_sum,
+ &th->th_sum, &sk->lan.addr,
+ sk->lan.xport.port, 0, pd->af,
+ pd->naf, 1);
+ }
+ }
+
+ copyback = off + sizeof(*th);
}
if (copyback) {
- m = pf_lazy_makewritable(pd, m, copyback);
- if (!m) {
+ if (pf_lazy_makewritable(pd, pbuf, copyback) == NULL) {
REASON_SET(reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
/* Copyback sequence modulation or stateful scrub changes */
- m_copyback(m, off, sizeof (*th), th);
- }
+ pbuf_copy_back(pbuf, off, sizeof(*th), th);
- return (PF_PASS);
+ if (sk->af_lan != sk->af_gwy) {
+ return pf_do_nat64(sk, pd, pbuf, off);
+ }
+ }
+ return PF_PASS;
}
static int
pf_test_state_udp(struct pf_state **state, int direction, struct pfi_kif *kif,
- struct mbuf *m, int off, void *h, struct pf_pdesc *pd, u_short *reason)
+ pbuf_t *pbuf, int off, void *h, struct pf_pdesc *pd, u_short *reason)
{
#pragma unused(h)
- struct pf_state_peer *src, *dst;
- struct pf_state_key_cmp key;
- struct udphdr *uh = pd->hdr.udp;
+ struct pf_state_peer *src, *dst;
+ struct pf_state_key_cmp key;
+ struct pf_state_key *sk;
+ struct udphdr *uh = pd->hdr.udp;
struct pf_app_state as;
- int dx, action, extfilter;
+ int action, extfilter;
key.app_state = 0;
key.proto_variant = PF_EXTFILTER_APD;
- key.af = pd->af;
key.proto = IPPROTO_UDP;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd->src, key.af);
- PF_ACPY(&key.gwy.addr, pd->dst, key.af);
- key.ext.xport.port = uh->uh_sport;
- key.gwy.xport.port = uh->uh_dport;
- dx = PF_IN;
- } else {
- PF_ACPY(&key.lan.addr, pd->src, key.af);
- PF_ACPY(&key.ext.addr, pd->dst, key.af);
- key.lan.xport.port = uh->uh_sport;
- key.ext.xport.port = uh->uh_dport;
- dx = PF_OUT;
- }
+ key.af_lan = key.af_gwy = pd->af;
+
+ /*
+ * For NAT64 the first time rule search and state creation
+ * is done on the incoming side only.
+ * Once the state gets created, NAT64's LAN side (ipv6) will
+ * not be able to find the state in ext-gwy tree as that normally
+ * is intended to be looked up for incoming traffic from the
+ * WAN side.
+ * Therefore to handle NAT64 case we init keys here for both
+ * lan-ext as well as ext-gwy trees.
+ * In the state lookup we attempt a lookup on both trees if
+ * first one does not return any result and return a match if
+ * the match state's was created by NAT64 rule.
+ */
+ PF_ACPY(&key.ext_gwy.addr, pd->src, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd->dst, key.af_gwy);
+ key.ext_gwy.xport.port = uh->uh_sport;
+ key.gwy.xport.port = uh->uh_dport;
+
+ PF_ACPY(&key.lan.addr, pd->src, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd->dst, key.af_lan);
+ key.lan.xport.port = uh->uh_sport;
+ key.ext_lan.xport.port = uh->uh_dport;
if (ntohs(uh->uh_sport) == PF_IKE_PORT &&
ntohs(uh->uh_dport) == PF_IKE_PORT) {
struct pf_ike_hdr ike;
- size_t plen = m->m_pkthdr.len - off - sizeof (*uh);
+ size_t plen = pbuf->pb_packet_len - off - sizeof(*uh);
if (plen < PF_IKE_PACKET_MINSIZE) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: IKE message too small.\n"));
- return (PF_DROP);
+ return PF_DROP;
}
- if (plen > sizeof (ike))
- plen = sizeof (ike);
- m_copydata(m, off + sizeof (*uh), plen, &ike);
+ if (plen > sizeof(ike)) {
+ plen = sizeof(ike);
+ }
+ pbuf_copy_data(pbuf, off + sizeof(*uh), plen, &ike);
if (ike.initiator_cookie) {
key.app_state = &as;
}
}
- *state = pf_find_state(kif, &key, dx);
+ *state = pf_find_state(kif, &key, direction);
if (!key.app_state && *state == 0) {
key.proto_variant = PF_EXTFILTER_AD;
- *state = pf_find_state(kif, &key, dx);
+ *state = pf_find_state(kif, &key, direction);
}
if (!key.app_state && *state == 0) {
key.proto_variant = PF_EXTFILTER_EI;
- *state = pf_find_state(kif, &key, dx);
+ *state = pf_find_state(kif, &key, direction);
}
/* similar to STATE_LOOKUP() */
}
}
- if (pf_state_lookup_aux(state, kif, direction, &action))
- return (action);
+ if (pf_state_lookup_aux(state, kif, direction, &action)) {
+ return action;
+ }
+
+ sk = (*state)->state_key;
- if (direction == (*state)->state_key->direction) {
+ /*
+ * In case of NAT64 the translation is first applied on the LAN
+ * side. Therefore for stack's address family comparison
+ * we use sk->af_lan.
+ */
+ if ((direction == sk->direction) && (pd->af == sk->af_lan)) {
src = &(*state)->src;
dst = &(*state)->dst;
} else {
}
/* update states */
- if (src->state < PFUDPS_SINGLE)
+ if (src->state < PFUDPS_SINGLE) {
src->state = PFUDPS_SINGLE;
- if (dst->state == PFUDPS_SINGLE)
+ }
+ if (dst->state == PFUDPS_SINGLE) {
dst->state = PFUDPS_MULTIPLE;
+ }
/* update expire time */
(*state)->expire = pf_time_second();
- if (src->state == PFUDPS_MULTIPLE && dst->state == PFUDPS_MULTIPLE)
+ if (src->state == PFUDPS_MULTIPLE && dst->state == PFUDPS_MULTIPLE) {
(*state)->timeout = PFTM_UDP_MULTIPLE;
- else
+ } else {
(*state)->timeout = PFTM_UDP_SINGLE;
+ }
- extfilter = (*state)->state_key->proto_variant;
+ extfilter = sk->proto_variant;
if (extfilter > PF_EXTFILTER_APD) {
- (*state)->state_key->ext.xport.port = key.ext.xport.port;
- if (extfilter > PF_EXTFILTER_AD)
- PF_ACPY(&(*state)->state_key->ext.addr,
- &key.ext.addr, key.af);
+ if (direction == PF_OUT) {
+ sk->ext_lan.xport.port = key.ext_lan.xport.port;
+ if (extfilter > PF_EXTFILTER_AD) {
+ PF_ACPY(&sk->ext_lan.addr, &key.ext_lan.addr,
+ key.af_lan);
+ }
+ } else {
+ sk->ext_gwy.xport.port = key.ext_gwy.xport.port;
+ if (extfilter > PF_EXTFILTER_AD) {
+ PF_ACPY(&sk->ext_gwy.addr, &key.ext_gwy.addr,
+ key.af_gwy);
+ }
+ }
}
- if ((*state)->state_key->app_state &&
- (*state)->state_key->app_state->handler) {
- (*state)->state_key->app_state->handler(*state, direction,
- off + uh->uh_ulen, pd, kif);
+ if (sk->app_state && sk->app_state->handler) {
+ sk->app_state->handler(*state, direction, off + uh->uh_ulen,
+ pd, kif);
if (pd->lmw < 0) {
REASON_SET(reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
- m = pd->mp;
+ pbuf = pd->mp; // XXXSCW: Why?
}
/* translate source/destination address, if necessary */
- if (STATE_TRANSLATE((*state)->state_key)) {
- m = pf_lazy_makewritable(pd, m, off + sizeof (*uh));
- if (!m) {
+ if (STATE_TRANSLATE(sk)) {
+ if (pf_lazy_makewritable(pd, pbuf, off + sizeof(*uh)) == NULL) {
REASON_SET(reason, PFRES_MEMORY);
- return (PF_DROP);
+ return PF_DROP;
}
- if (direction == PF_OUT)
+ pd->naf = (pd->af == sk->af_lan) ? sk->af_gwy : sk->af_lan;
+
+ if (direction == PF_OUT) {
pf_change_ap(direction, pd->mp, pd->src, &uh->uh_sport,
- pd->ip_sum, &uh->uh_sum,
- &(*state)->state_key->gwy.addr,
- (*state)->state_key->gwy.xport.port, 1, pd->af);
- else
- pf_change_ap(direction, pd->mp, pd->dst, &uh->uh_dport,
- pd->ip_sum, &uh->uh_sum,
- &(*state)->state_key->lan.addr,
- (*state)->state_key->lan.xport.port, 1, pd->af);
- m_copyback(m, off, sizeof (*uh), uh);
- }
-
- return (PF_PASS);
+ pd->ip_sum, &uh->uh_sum, &sk->gwy.addr,
+ sk->gwy.xport.port, 1, pd->af, pd->naf, 1);
+ } else {
+ if (pd->af != pd->naf) {
+ if (pd->af == sk->af_gwy) {
+ pf_change_ap(direction, pd->mp, pd->dst,
+ &uh->uh_dport, pd->ip_sum,
+ &uh->uh_sum, &sk->lan.addr,
+ sk->lan.xport.port, 1,
+ pd->af, pd->naf, 0);
+
+ pf_change_ap(direction, pd->mp, pd->src,
+ &uh->uh_sport, pd->ip_sum,
+ &uh->uh_sum, &sk->ext_lan.addr,
+ uh->uh_sport, 1, pd->af,
+ pd->naf, 0);
+ } else {
+ pf_change_ap(direction, pd->mp, pd->dst,
+ &uh->uh_dport, pd->ip_sum,
+ &uh->uh_sum, &sk->ext_gwy.addr,
+ uh->uh_dport, 1, pd->af,
+ pd->naf, 0);
+
+ pf_change_ap(direction, pd->mp, pd->src,
+ &uh->uh_sport, pd->ip_sum,
+ &uh->uh_sum, &sk->gwy.addr,
+ sk->gwy.xport.port, 1, pd->af,
+ pd->naf, 0);
+ }
+ } else {
+ pf_change_ap(direction, pd->mp, pd->dst,
+ &uh->uh_dport, pd->ip_sum,
+ &uh->uh_sum, &sk->lan.addr,
+ sk->lan.xport.port, 1,
+ pd->af, pd->naf, 1);
+ }
+ }
+
+ pbuf_copy_back(pbuf, off, sizeof(*uh), uh);
+ if (sk->af_lan != sk->af_gwy) {
+ return pf_do_nat64(sk, pd, pbuf, off);
+ }
+ }
+ return PF_PASS;
}
static int
pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
- struct mbuf *m, int off, void *h, struct pf_pdesc *pd, u_short *reason)
+ pbuf_t *pbuf, int off, void *h, struct pf_pdesc *pd, u_short *reason)
{
#pragma unused(h)
- struct pf_addr *saddr = pd->src, *daddr = pd->dst;
- u_int16_t icmpid = 0, *icmpsum;
- u_int8_t icmptype;
- int state_icmp = 0;
+ struct pf_addr *saddr = pd->src, *daddr = pd->dst;
+ struct in_addr srcv4_inaddr = saddr->v4addr;
+ u_int16_t icmpid = 0, *icmpsum = NULL;
+ u_int8_t icmptype = 0;
+ int state_icmp = 0;
struct pf_state_key_cmp key;
+ struct pf_state_key *sk;
struct pf_app_state as;
key.app_state = 0;
+ pd->off = off;
+
switch (pd->proto) {
#if INET
case IPPROTO_ICMP:
icmpid = pd->hdr.icmp->icmp_id;
icmpsum = &pd->hdr.icmp->icmp_cksum;
- if (icmptype == ICMP_UNREACH ||
- icmptype == ICMP_SOURCEQUENCH ||
- icmptype == ICMP_REDIRECT ||
- icmptype == ICMP_TIMXCEED ||
- icmptype == ICMP_PARAMPROB)
+ if (ICMP_ERRORTYPE(icmptype)) {
state_icmp++;
+ }
break;
#endif /* INET */
#if INET6
icmpid = pd->hdr.icmp6->icmp6_id;
icmpsum = &pd->hdr.icmp6->icmp6_cksum;
- if (icmptype == ICMP6_DST_UNREACH ||
- icmptype == ICMP6_PACKET_TOO_BIG ||
- icmptype == ICMP6_TIME_EXCEEDED ||
- icmptype == ICMP6_PARAM_PROB)
+ if (ICMP6_ERRORTYPE(icmptype)) {
state_icmp++;
+ }
break;
#endif /* INET6 */
}
if (!state_icmp) {
-
/*
* ICMP query/reply message not related to a TCP/UDP packet.
* Search for an ICMP state.
*/
- key.af = pd->af;
- key.proto = pd->proto;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd->src, key.af);
- PF_ACPY(&key.gwy.addr, pd->dst, key.af);
- key.ext.xport.port = 0;
- key.gwy.xport.port = icmpid;
- } else {
- PF_ACPY(&key.lan.addr, pd->src, key.af);
- PF_ACPY(&key.ext.addr, pd->dst, key.af);
- key.lan.xport.port = icmpid;
- key.ext.xport.port = 0;
- }
+ /*
+ * NAT64 requires protocol translation between ICMPv4
+ * and ICMPv6. TCP and UDP do not require protocol
+ * translation. To avoid adding complexity just to
+ * handle ICMP(v4addr/v6addr), we always lookup for
+ * proto = IPPROTO_ICMP on both LAN and WAN side
+ */
+ key.proto = IPPROTO_ICMP;
+ key.af_lan = key.af_gwy = pd->af;
+
+ PF_ACPY(&key.ext_gwy.addr, pd->src, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd->dst, key.af_gwy);
+ key.ext_gwy.xport.port = 0;
+ key.gwy.xport.port = icmpid;
+
+ PF_ACPY(&key.lan.addr, pd->src, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd->dst, key.af_lan);
+ key.lan.xport.port = icmpid;
+ key.ext_lan.xport.port = 0;
STATE_LOOKUP();
+ sk = (*state)->state_key;
(*state)->expire = pf_time_second();
(*state)->timeout = PFTM_ICMP_ERROR_REPLY;
/* translate source/destination address, if necessary */
- if (STATE_TRANSLATE((*state)->state_key)) {
+ if (STATE_TRANSLATE(sk)) {
+ pd->naf = (pd->af == sk->af_lan) ?
+ sk->af_gwy : sk->af_lan;
if (direction == PF_OUT) {
switch (pd->af) {
#if INET
case AF_INET:
- pf_change_a(&saddr->v4.s_addr,
+ pf_change_a(&saddr->v4addr.s_addr,
pd->ip_sum,
- (*state)->state_key->gwy.addr.v4.s_addr, 0);
+ sk->gwy.addr.v4addr.s_addr, 0);
pd->hdr.icmp->icmp_cksum =
pf_cksum_fixup(
- pd->hdr.icmp->icmp_cksum, icmpid,
- (*state)->state_key->gwy.xport.port, 0);
+ pd->hdr.icmp->icmp_cksum, icmpid,
+ sk->gwy.xport.port, 0);
pd->hdr.icmp->icmp_id =
- (*state)->state_key->gwy.xport.port;
- m = pf_lazy_makewritable(pd, m,
- off + ICMP_MINLEN);
- if (!m)
- return (PF_DROP);
- m_copyback(m, off, ICMP_MINLEN,
+ sk->gwy.xport.port;
+ if (pf_lazy_makewritable(pd, pbuf,
+ off + ICMP_MINLEN) == NULL) {
+ return PF_DROP;
+ }
+ pbuf_copy_back(pbuf, off, ICMP_MINLEN,
pd->hdr.icmp);
break;
#endif /* INET */
case AF_INET6:
pf_change_a6(saddr,
&pd->hdr.icmp6->icmp6_cksum,
- &(*state)->state_key->gwy.addr, 0);
- m = pf_lazy_makewritable(pd, m,
- off + sizeof (struct icmp6_hdr));
- if (!m)
- return (PF_DROP);
- m_copyback(m, off,
- sizeof (struct icmp6_hdr),
+ &sk->gwy.addr, 0);
+ if (pf_lazy_makewritable(pd, NULL,
+ off + sizeof(struct icmp6_hdr)) ==
+ NULL) {
+ return PF_DROP;
+ }
+ pbuf_copy_back(pbuf, off,
+ sizeof(struct icmp6_hdr),
pd->hdr.icmp6);
break;
#endif /* INET6 */
switch (pd->af) {
#if INET
case AF_INET:
- pf_change_a(&daddr->v4.s_addr,
- pd->ip_sum,
- (*state)->state_key->lan.addr.v4.s_addr, 0);
- pd->hdr.icmp->icmp_cksum =
- pf_cksum_fixup(
- pd->hdr.icmp->icmp_cksum, icmpid,
- (*state)->state_key->lan.xport.port, 0);
- pd->hdr.icmp->icmp_id =
- (*state)->state_key->lan.xport.port;
- m = pf_lazy_makewritable(pd, m,
- off + ICMP_MINLEN);
- if (!m)
- return (PF_DROP);
- m_copyback(m, off, ICMP_MINLEN,
+ if (pd->naf != AF_INET) {
+ if (pf_translate_icmp_af(
+ AF_INET6, pd->hdr.icmp)) {
+ return PF_DROP;
+ }
+
+ pd->proto = IPPROTO_ICMPV6;
+ } else {
+ pf_change_a(&daddr->v4addr.s_addr,
+ pd->ip_sum,
+ sk->lan.addr.v4addr.s_addr, 0);
+
+ pd->hdr.icmp->icmp_cksum =
+ pf_cksum_fixup(
+ pd->hdr.icmp->icmp_cksum,
+ icmpid, sk->lan.xport.port, 0);
+
+ pd->hdr.icmp->icmp_id =
+ sk->lan.xport.port;
+ }
+
+ if (pf_lazy_makewritable(pd, pbuf,
+ off + ICMP_MINLEN) == NULL) {
+ return PF_DROP;
+ }
+ pbuf_copy_back(pbuf, off, ICMP_MINLEN,
pd->hdr.icmp);
+ if (sk->af_lan != sk->af_gwy) {
+ return pf_do_nat64(sk, pd,
+ pbuf, off);
+ }
break;
#endif /* INET */
#if INET6
case AF_INET6:
- pf_change_a6(daddr,
- &pd->hdr.icmp6->icmp6_cksum,
- &(*state)->state_key->lan.addr, 0);
- m = pf_lazy_makewritable(pd, m,
- off + sizeof (struct icmp6_hdr));
- if (!m)
- return (PF_DROP);
- m_copyback(m, off,
- sizeof (struct icmp6_hdr),
+ if (pd->naf != AF_INET6) {
+ if (pf_translate_icmp_af(
+ AF_INET, pd->hdr.icmp6)) {
+ return PF_DROP;
+ }
+
+ pd->proto = IPPROTO_ICMP;
+ } else {
+ pf_change_a6(daddr,
+ &pd->hdr.icmp6->icmp6_cksum,
+ &sk->lan.addr, 0);
+ }
+ if (pf_lazy_makewritable(pd, pbuf,
+ off + sizeof(struct icmp6_hdr)) ==
+ NULL) {
+ return PF_DROP;
+ }
+ pbuf_copy_back(pbuf, off,
+ sizeof(struct icmp6_hdr),
pd->hdr.icmp6);
+ if (sk->af_lan != sk->af_gwy) {
+ return pf_do_nat64(sk, pd,
+ pbuf, off);
+ }
break;
#endif /* INET6 */
}
}
}
- return (PF_PASS);
-
+ return PF_PASS;
} else {
/*
* ICMP error message in response to a TCP/UDP packet.
* Extract the inner TCP/UDP header and search for that state.
*/
-
- struct pf_pdesc pd2;
+ struct pf_pdesc pd2; /* For inner (original) header */
#if INET
- struct ip h2;
+ struct ip h2;
#endif /* INET */
#if INET6
- struct ip6_hdr h2_6;
- int terminal = 0;
+ struct ip6_hdr h2_6;
+ int terminal = 0;
#endif /* INET6 */
- int ipoff2 = 0;
- int off2 = 0;
+ int ipoff2 = 0;
+ int off2 = 0;
- memset(&pd2, 0, sizeof (pd2));
+ memset(&pd2, 0, sizeof(pd2));
pd2.af = pd->af;
switch (pd->af) {
/* offset of h2 in mbuf chain */
ipoff2 = off + ICMP_MINLEN;
- if (!pf_pull_hdr(m, ipoff2, &h2, sizeof (h2),
+ if (!pf_pull_hdr(pbuf, ipoff2, &h2, sizeof(h2),
NULL, reason, pd2.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: ICMP error message too short "
"(ip)\n"));
- return (PF_DROP);
+ return PF_DROP;
}
/*
* ICMP error messages don't refer to non-first
*/
if (h2.ip_off & htons(IP_OFFMASK)) {
REASON_SET(reason, PFRES_FRAG);
- return (PF_DROP);
+ return PF_DROP;
}
/* offset of protocol header that follows h2 */
off2 = ipoff2 + (h2.ip_hl << 2);
+ /* TODO */
+ pd2.off = ipoff2 + (h2.ip_hl << 2);
pd2.proto = h2.ip_p;
pd2.src = (struct pf_addr *)&h2.ip_src;
#endif /* INET */
#if INET6
case AF_INET6:
- ipoff2 = off + sizeof (struct icmp6_hdr);
+ ipoff2 = off + sizeof(struct icmp6_hdr);
- if (!pf_pull_hdr(m, ipoff2, &h2_6, sizeof (h2_6),
+ if (!pf_pull_hdr(pbuf, ipoff2, &h2_6, sizeof(h2_6),
NULL, reason, pd2.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: ICMP error message too short "
"(ip6)\n"));
- return (PF_DROP);
+ return PF_DROP;
}
pd2.proto = h2_6.ip6_nxt;
- pd2.src = (struct pf_addr *)&h2_6.ip6_src;
- pd2.dst = (struct pf_addr *)&h2_6.ip6_dst;
+ pd2.src = (struct pf_addr *)(uintptr_t)&h2_6.ip6_src;
+ pd2.dst = (struct pf_addr *)(uintptr_t)&h2_6.ip6_dst;
pd2.ip_sum = NULL;
- off2 = ipoff2 + sizeof (h2_6);
+ off2 = ipoff2 + sizeof(h2_6);
do {
switch (pd2.proto) {
case IPPROTO_FRAGMENT:
* non-first fragments
*/
REASON_SET(reason, PFRES_FRAG);
- return (PF_DROP);
+ return PF_DROP;
case IPPROTO_AH:
case IPPROTO_HOPOPTS:
case IPPROTO_ROUTING:
/* get next header and header length */
struct ip6_ext opt6;
- if (!pf_pull_hdr(m, off2, &opt6,
- sizeof (opt6), NULL, reason,
+ if (!pf_pull_hdr(pbuf, off2, &opt6,
+ sizeof(opt6), NULL, reason,
pd2.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: ICMPv6 short opt\n"));
- return (PF_DROP);
+ return PF_DROP;
}
- if (pd2.proto == IPPROTO_AH)
+ if (pd2.proto == IPPROTO_AH) {
off2 += (opt6.ip6e_len + 2) * 4;
- else
+ } else {
off2 += (opt6.ip6e_len + 1) * 8;
+ }
pd2.proto = opt6.ip6e_nxt;
/* goto the next header */
break;
break;
}
} while (!terminal);
+ /* TODO */
+ pd2.off = ipoff2;
break;
#endif /* INET6 */
}
switch (pd2.proto) {
case IPPROTO_TCP: {
- struct tcphdr th;
- u_int32_t seq;
- struct pf_state_peer *src, *dst;
- u_int8_t dws;
- int copyback = 0;
+ struct tcphdr th;
+ u_int32_t seq;
+ struct pf_state_peer *src, *dst;
+ u_int8_t dws;
+ int copyback = 0;
/*
* Only the first 8 bytes of the TCP header can be
* expected. Don't access any TCP header fields after
* th_seq, an ackskew test is not possible.
*/
- if (!pf_pull_hdr(m, off2, &th, 8, NULL, reason,
+ if (!pf_pull_hdr(pbuf, off2, &th, 8, NULL, reason,
pd2.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: ICMP error message too short "
"(tcp)\n"));
- return (PF_DROP);
+ return PF_DROP;
}
- key.af = pd2.af;
key.proto = IPPROTO_TCP;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd2.dst, key.af);
- PF_ACPY(&key.gwy.addr, pd2.src, key.af);
- key.ext.xport.port = th.th_dport;
- key.gwy.xport.port = th.th_sport;
- } else {
- PF_ACPY(&key.lan.addr, pd2.dst, key.af);
- PF_ACPY(&key.ext.addr, pd2.src, key.af);
- key.lan.xport.port = th.th_dport;
- key.ext.xport.port = th.th_sport;
- }
+ key.af_gwy = pd2.af;
+ PF_ACPY(&key.ext_gwy.addr, pd2.dst, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd2.src, key.af_gwy);
+ key.ext_gwy.xport.port = th.th_dport;
+ key.gwy.xport.port = th.th_sport;
+
+ key.af_lan = pd2.af;
+ PF_ACPY(&key.lan.addr, pd2.dst, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd2.src, key.af_lan);
+ key.lan.xport.port = th.th_dport;
+ key.ext_lan.xport.port = th.th_sport;
STATE_LOOKUP();
- if (direction == (*state)->state_key->direction) {
+ sk = (*state)->state_key;
+ if ((direction == sk->direction) &&
+ ((sk->af_lan == sk->af_gwy) ||
+ (pd2.af == sk->af_lan))) {
src = &(*state)->dst;
dst = &(*state)->src;
} else {
dst = &(*state)->dst;
}
- if (src->wscale && (dst->wscale & PF_WSCALE_FLAG))
+ if (src->wscale && (dst->wscale & PF_WSCALE_FLAG)) {
dws = dst->wscale & PF_WSCALE_MASK;
- else
+ } else {
dws = TCP_MAX_WINSHIFT;
+ }
/* Demodulate sequence number */
seq = ntohl(th.th_seq) - src->seqdiff;
printf(" seq=%u\n", seq);
}
REASON_SET(reason, PFRES_BADSTATE);
- return (PF_DROP);
+ return PF_DROP;
}
- if (STATE_TRANSLATE((*state)->state_key)) {
+ pd->naf = pd2.naf = (pd2.af == sk->af_lan) ?
+ sk->af_gwy : sk->af_lan;
+
+ if (STATE_TRANSLATE(sk)) {
+ /* NAT64 case */
+ if (sk->af_lan != sk->af_gwy) {
+ struct pf_state_host *saddr2, *daddr2;
+
+ if (pd2.naf == sk->af_lan) {
+ saddr2 = &sk->lan;
+ daddr2 = &sk->ext_lan;
+ } else {
+ saddr2 = &sk->ext_gwy;
+ daddr2 = &sk->gwy;
+ }
+
+ /* translate ICMP message types and codes */
+ if (pf_translate_icmp_af(pd->naf,
+ pd->hdr.icmp)) {
+ return PF_DROP;
+ }
+
+ if (pf_lazy_makewritable(pd, pbuf,
+ off2 + 8) == NULL) {
+ return PF_DROP;
+ }
+
+ pbuf_copy_back(pbuf, pd->off,
+ sizeof(struct icmp6_hdr),
+ pd->hdr.icmp6);
+
+ /*
+ * translate inner ip header within the
+ * ICMP message
+ */
+ if (pf_change_icmp_af(pbuf, ipoff2, pd,
+ &pd2, &saddr2->addr, &daddr2->addr,
+ pd->af, pd->naf)) {
+ return PF_DROP;
+ }
+
+ if (pd->naf == AF_INET) {
+ pd->proto = IPPROTO_ICMP;
+ } else {
+ pd->proto = IPPROTO_ICMPV6;
+ }
+
+ /*
+ * translate inner tcp header within
+ * the ICMP message
+ */
+ pf_change_ap(direction, NULL, pd2.src,
+ &th.th_sport, pd2.ip_sum,
+ &th.th_sum, &daddr2->addr,
+ saddr2->xport.port, 0, pd2.af,
+ pd2.naf, 0);
+
+ pf_change_ap(direction, NULL, pd2.dst,
+ &th.th_dport, pd2.ip_sum,
+ &th.th_sum, &saddr2->addr,
+ daddr2->xport.port, 0, pd2.af,
+ pd2.naf, 0);
+
+ pbuf_copy_back(pbuf, pd2.off, 8, &th);
+
+ /* translate outer ip header */
+ PF_ACPY(&pd->naddr, &daddr2->addr,
+ pd->naf);
+ PF_ACPY(&pd->ndaddr, &saddr2->addr,
+ pd->naf);
+ if (pd->af == AF_INET) {
+ memcpy(&pd->naddr.addr32[3],
+ &srcv4_inaddr,
+ sizeof(pd->naddr.addr32[3]));
+ return pf_nat64_ipv4(pbuf, off,
+ pd);
+ } else {
+ return pf_nat64_ipv6(pbuf, off,
+ pd);
+ }
+ }
if (direction == PF_IN) {
pf_change_icmp(pd2.src, &th.th_sport,
- daddr, &(*state)->state_key->lan.addr,
- (*state)->state_key->lan.xport.port, NULL,
+ daddr, &sk->lan.addr,
+ sk->lan.xport.port, NULL,
pd2.ip_sum, icmpsum,
pd->ip_sum, 0, pd2.af);
} else {
pf_change_icmp(pd2.dst, &th.th_dport,
- saddr, &(*state)->state_key->gwy.addr,
- (*state)->state_key->gwy.xport.port, NULL,
+ saddr, &sk->gwy.addr,
+ sk->gwy.xport.port, NULL,
pd2.ip_sum, icmpsum,
pd->ip_sum, 0, pd2.af);
}
}
if (copyback) {
- m = pf_lazy_makewritable(pd, m, off2 + 8);
- if (!m)
- return (PF_DROP);
+ if (pf_lazy_makewritable(pd, pbuf, off2 + 8) ==
+ NULL) {
+ return PF_DROP;
+ }
switch (pd2.af) {
#if INET
case AF_INET:
- m_copyback(m, off, ICMP_MINLEN,
+ pbuf_copy_back(pbuf, off, ICMP_MINLEN,
pd->hdr.icmp);
- m_copyback(m, ipoff2, sizeof (h2),
+ pbuf_copy_back(pbuf, ipoff2, sizeof(h2),
&h2);
break;
#endif /* INET */
#if INET6
case AF_INET6:
- m_copyback(m, off,
- sizeof (struct icmp6_hdr),
+ pbuf_copy_back(pbuf, off,
+ sizeof(struct icmp6_hdr),
pd->hdr.icmp6);
- m_copyback(m, ipoff2, sizeof (h2_6),
- &h2_6);
+ pbuf_copy_back(pbuf, ipoff2,
+ sizeof(h2_6), &h2_6);
break;
#endif /* INET6 */
}
- m_copyback(m, off2, 8, &th);
+ pbuf_copy_back(pbuf, off2, 8, &th);
}
- return (PF_PASS);
- break;
+ return PF_PASS;
}
case IPPROTO_UDP: {
- struct udphdr uh;
+ struct udphdr uh;
int dx, action;
- if (!pf_pull_hdr(m, off2, &uh, sizeof (uh),
+ if (!pf_pull_hdr(pbuf, off2, &uh, sizeof(uh),
NULL, reason, pd2.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: ICMP error message too short "
"(udp)\n"));
- return (PF_DROP);
+ return PF_DROP;
}
- key.af = pd2.af;
- key.proto = IPPROTO_UDP;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd2.dst, key.af);
- PF_ACPY(&key.gwy.addr, pd2.src, key.af);
- key.ext.xport.port = uh.uh_dport;
- key.gwy.xport.port = uh.uh_sport;
- dx = PF_IN;
- } else {
- PF_ACPY(&key.lan.addr, pd2.dst, key.af);
- PF_ACPY(&key.ext.addr, pd2.src, key.af);
- key.lan.xport.port = uh.uh_dport;
- key.ext.xport.port = uh.uh_sport;
- dx = PF_OUT;
- }
+ key.af_gwy = pd2.af;
+ PF_ACPY(&key.ext_gwy.addr, pd2.dst, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd2.src, key.af_gwy);
+ key.ext_gwy.xport.port = uh.uh_dport;
+ key.gwy.xport.port = uh.uh_sport;
+ key.af_lan = pd2.af;
+ PF_ACPY(&key.lan.addr, pd2.dst, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd2.src, key.af_lan);
+ key.lan.xport.port = uh.uh_dport;
+ key.ext_lan.xport.port = uh.uh_sport;
+
+ key.proto = IPPROTO_UDP;
key.proto_variant = PF_EXTFILTER_APD;
+ dx = direction;
if (ntohs(uh.uh_sport) == PF_IKE_PORT &&
ntohs(uh.uh_dport) == PF_IKE_PORT) {
struct pf_ike_hdr ike;
- size_t plen =
- m->m_pkthdr.len - off2 - sizeof (uh);
+ size_t plen = pbuf->pb_packet_len - off2 -
+ sizeof(uh);
if (direction == PF_IN &&
plen < 8 /* PF_IKE_PACKET_MINSIZE */) {
DPFPRINTF(PF_DEBUG_MISC, ("pf: "
"ICMP error, embedded IKE message "
"too small.\n"));
- return (PF_DROP);
+ return PF_DROP;
}
- if (plen > sizeof (ike))
- plen = sizeof (ike);
- m_copydata(m, off + sizeof (uh), plen, &ike);
+ if (plen > sizeof(ike)) {
+ plen = sizeof(ike);
+ }
+ pbuf_copy_data(pbuf, off + sizeof(uh), plen,
+ &ike);
key.app_state = &as;
as.compare_lan_ext = pf_ike_compare;
}
}
- if (pf_state_lookup_aux(state, kif, direction, &action))
- return (action);
+ if (pf_state_lookup_aux(state, kif, direction, &action)) {
+ return action;
+ }
+
+ sk = (*state)->state_key;
+ pd->naf = pd2.naf = (pd2.af == sk->af_lan) ?
+ sk->af_gwy : sk->af_lan;
+
+ if (STATE_TRANSLATE(sk)) {
+ /* NAT64 case */
+ if (sk->af_lan != sk->af_gwy) {
+ struct pf_state_host *saddr2, *daddr2;
+
+ if (pd2.naf == sk->af_lan) {
+ saddr2 = &sk->lan;
+ daddr2 = &sk->ext_lan;
+ } else {
+ saddr2 = &sk->ext_gwy;
+ daddr2 = &sk->gwy;
+ }
+
+ /* translate ICMP message */
+ if (pf_translate_icmp_af(pd->naf,
+ pd->hdr.icmp)) {
+ return PF_DROP;
+ }
+ if (pf_lazy_makewritable(pd, pbuf,
+ off2 + 8) == NULL) {
+ return PF_DROP;
+ }
+
+ pbuf_copy_back(pbuf, pd->off,
+ sizeof(struct icmp6_hdr),
+ pd->hdr.icmp6);
+
+ /*
+ * translate inner ip header within the
+ * ICMP message
+ */
+ if (pf_change_icmp_af(pbuf, ipoff2, pd,
+ &pd2, &saddr2->addr, &daddr2->addr,
+ pd->af, pd->naf)) {
+ return PF_DROP;
+ }
+
+ if (pd->naf == AF_INET) {
+ pd->proto = IPPROTO_ICMP;
+ } else {
+ pd->proto = IPPROTO_ICMPV6;
+ }
- if (STATE_TRANSLATE((*state)->state_key)) {
+ /*
+ * translate inner udp header within
+ * the ICMP message
+ */
+ pf_change_ap(direction, NULL, pd2.src,
+ &uh.uh_sport, pd2.ip_sum,
+ &uh.uh_sum, &daddr2->addr,
+ saddr2->xport.port, 0, pd2.af,
+ pd2.naf, 0);
+
+ pf_change_ap(direction, NULL, pd2.dst,
+ &uh.uh_dport, pd2.ip_sum,
+ &uh.uh_sum, &saddr2->addr,
+ daddr2->xport.port, 0, pd2.af,
+ pd2.naf, 0);
+
+ pbuf_copy_back(pbuf, pd2.off,
+ sizeof(uh), &uh);
+
+ /* translate outer ip header */
+ PF_ACPY(&pd->naddr, &daddr2->addr,
+ pd->naf);
+ PF_ACPY(&pd->ndaddr, &saddr2->addr,
+ pd->naf);
+ if (pd->af == AF_INET) {
+ memcpy(&pd->naddr.addr32[3],
+ &srcv4_inaddr,
+ sizeof(pd->naddr.addr32[3]));
+ return pf_nat64_ipv4(pbuf, off,
+ pd);
+ } else {
+ return pf_nat64_ipv6(pbuf, off,
+ pd);
+ }
+ }
if (direction == PF_IN) {
pf_change_icmp(pd2.src, &uh.uh_sport,
- daddr, &(*state)->state_key->lan.addr,
- (*state)->state_key->lan.xport.port, &uh.uh_sum,
+ daddr, &sk->lan.addr,
+ sk->lan.xport.port, &uh.uh_sum,
pd2.ip_sum, icmpsum,
pd->ip_sum, 1, pd2.af);
} else {
pf_change_icmp(pd2.dst, &uh.uh_dport,
- saddr, &(*state)->state_key->gwy.addr,
- (*state)->state_key->gwy.xport.port, &uh.uh_sum,
+ saddr, &sk->gwy.addr,
+ sk->gwy.xport.port, &uh.uh_sum,
pd2.ip_sum, icmpsum,
pd->ip_sum, 1, pd2.af);
}
- m = pf_lazy_makewritable(pd, m,
- off2 + sizeof (uh));
- if (!m)
- return (PF_DROP);
+ if (pf_lazy_makewritable(pd, pbuf,
+ off2 + sizeof(uh)) == NULL) {
+ return PF_DROP;
+ }
switch (pd2.af) {
#if INET
case AF_INET:
- m_copyback(m, off, ICMP_MINLEN,
+ pbuf_copy_back(pbuf, off, ICMP_MINLEN,
pd->hdr.icmp);
- m_copyback(m, ipoff2, sizeof (h2), &h2);
+ pbuf_copy_back(pbuf, ipoff2,
+ sizeof(h2), &h2);
break;
#endif /* INET */
#if INET6
case AF_INET6:
- m_copyback(m, off,
- sizeof (struct icmp6_hdr),
+ pbuf_copy_back(pbuf, off,
+ sizeof(struct icmp6_hdr),
pd->hdr.icmp6);
- m_copyback(m, ipoff2, sizeof (h2_6),
- &h2_6);
+ pbuf_copy_back(pbuf, ipoff2,
+ sizeof(h2_6), &h2_6);
break;
#endif /* INET6 */
}
- m_copyback(m, off2, sizeof (uh), &uh);
+ pbuf_copy_back(pbuf, off2, sizeof(uh), &uh);
}
- return (PF_PASS);
- break;
+ return PF_PASS;
}
#if INET
case IPPROTO_ICMP: {
- struct icmp iih;
+ struct icmp iih;
- if (!pf_pull_hdr(m, off2, &iih, ICMP_MINLEN,
+ if (!pf_pull_hdr(pbuf, off2, &iih, ICMP_MINLEN,
NULL, reason, pd2.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: ICMP error message too short i"
"(icmp)\n"));
- return (PF_DROP);
+ return PF_DROP;
}
- key.af = pd2.af;
key.proto = IPPROTO_ICMP;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd2.dst, key.af);
- PF_ACPY(&key.gwy.addr, pd2.src, key.af);
- key.ext.xport.port = 0;
+ if (direction == PF_IN) {
+ key.af_gwy = pd2.af;
+ PF_ACPY(&key.ext_gwy.addr, pd2.dst, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd2.src, key.af_gwy);
+ key.ext_gwy.xport.port = 0;
key.gwy.xport.port = iih.icmp_id;
} else {
- PF_ACPY(&key.lan.addr, pd2.dst, key.af);
- PF_ACPY(&key.ext.addr, pd2.src, key.af);
+ key.af_lan = pd2.af;
+ PF_ACPY(&key.lan.addr, pd2.dst, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd2.src, key.af_lan);
key.lan.xport.port = iih.icmp_id;
- key.ext.xport.port = 0;
+ key.ext_lan.xport.port = 0;
}
STATE_LOOKUP();
- if (STATE_TRANSLATE((*state)->state_key)) {
+ sk = (*state)->state_key;
+ if (STATE_TRANSLATE(sk)) {
if (direction == PF_IN) {
pf_change_icmp(pd2.src, &iih.icmp_id,
- daddr, &(*state)->state_key->lan.addr,
- (*state)->state_key->lan.xport.port, NULL,
+ daddr, &sk->lan.addr,
+ sk->lan.xport.port, NULL,
pd2.ip_sum, icmpsum,
pd->ip_sum, 0, AF_INET);
} else {
pf_change_icmp(pd2.dst, &iih.icmp_id,
- saddr, &(*state)->state_key->gwy.addr,
- (*state)->state_key->gwy.xport.port, NULL,
+ saddr, &sk->gwy.addr,
+ sk->gwy.xport.port, NULL,
pd2.ip_sum, icmpsum,
pd->ip_sum, 0, AF_INET);
}
- m = pf_lazy_makewritable(pd, m, off2 + ICMP_MINLEN);
- if (!m)
- return (PF_DROP);
- m_copyback(m, off, ICMP_MINLEN, pd->hdr.icmp);
- m_copyback(m, ipoff2, sizeof (h2), &h2);
- m_copyback(m, off2, ICMP_MINLEN, &iih);
+ if (pf_lazy_makewritable(pd, pbuf,
+ off2 + ICMP_MINLEN) == NULL) {
+ return PF_DROP;
+ }
+ pbuf_copy_back(pbuf, off, ICMP_MINLEN,
+ pd->hdr.icmp);
+ pbuf_copy_back(pbuf, ipoff2, sizeof(h2), &h2);
+ pbuf_copy_back(pbuf, off2, ICMP_MINLEN, &iih);
}
- return (PF_PASS);
- break;
+ return PF_PASS;
}
#endif /* INET */
#if INET6
case IPPROTO_ICMPV6: {
- struct icmp6_hdr iih;
+ struct icmp6_hdr iih;
- if (!pf_pull_hdr(m, off2, &iih,
- sizeof (struct icmp6_hdr), NULL, reason, pd2.af)) {
+ if (!pf_pull_hdr(pbuf, off2, &iih,
+ sizeof(struct icmp6_hdr), NULL, reason, pd2.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: ICMP error message too short "
"(icmp6)\n"));
- return (PF_DROP);
+ return PF_DROP;
}
- key.af = pd2.af;
key.proto = IPPROTO_ICMPV6;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd2.dst, key.af);
- PF_ACPY(&key.gwy.addr, pd2.src, key.af);
- key.ext.xport.port = 0;
+ if (direction == PF_IN) {
+ key.af_gwy = pd2.af;
+ PF_ACPY(&key.ext_gwy.addr, pd2.dst, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd2.src, key.af_gwy);
+ key.ext_gwy.xport.port = 0;
key.gwy.xport.port = iih.icmp6_id;
} else {
- PF_ACPY(&key.lan.addr, pd2.dst, key.af);
- PF_ACPY(&key.ext.addr, pd2.src, key.af);
+ key.af_lan = pd2.af;
+ PF_ACPY(&key.lan.addr, pd2.dst, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd2.src, key.af_lan);
key.lan.xport.port = iih.icmp6_id;
- key.ext.xport.port = 0;
+ key.ext_lan.xport.port = 0;
}
STATE_LOOKUP();
- if (STATE_TRANSLATE((*state)->state_key)) {
+ sk = (*state)->state_key;
+ if (STATE_TRANSLATE(sk)) {
if (direction == PF_IN) {
pf_change_icmp(pd2.src, &iih.icmp6_id,
- daddr, &(*state)->state_key->lan.addr,
- (*state)->state_key->lan.xport.port, NULL,
+ daddr, &sk->lan.addr,
+ sk->lan.xport.port, NULL,
pd2.ip_sum, icmpsum,
pd->ip_sum, 0, AF_INET6);
} else {
pf_change_icmp(pd2.dst, &iih.icmp6_id,
- saddr, &(*state)->state_key->gwy.addr,
- (*state)->state_key->gwy.xport.port, NULL,
+ saddr, &sk->gwy.addr,
+ sk->gwy.xport.port, NULL,
pd2.ip_sum, icmpsum,
pd->ip_sum, 0, AF_INET6);
}
- m = pf_lazy_makewritable(pd, m, off2 +
- sizeof (struct icmp6_hdr));
- if (!m)
- return (PF_DROP);
- m_copyback(m, off, sizeof (struct icmp6_hdr),
- pd->hdr.icmp6);
- m_copyback(m, ipoff2, sizeof (h2_6), &h2_6);
- m_copyback(m, off2, sizeof (struct icmp6_hdr),
- &iih);
- }
-
- return (PF_PASS);
- break;
+ if (pf_lazy_makewritable(pd, pbuf, off2 +
+ sizeof(struct icmp6_hdr)) == NULL) {
+ return PF_DROP;
+ }
+ pbuf_copy_back(pbuf, off,
+ sizeof(struct icmp6_hdr), pd->hdr.icmp6);
+ pbuf_copy_back(pbuf, ipoff2, sizeof(h2_6),
+ &h2_6);
+ pbuf_copy_back(pbuf, off2,
+ sizeof(struct icmp6_hdr), &iih);
+ }
+
+ return PF_PASS;
}
#endif /* INET6 */
default: {
- key.af = pd2.af;
key.proto = pd2.proto;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd2.dst, key.af);
- PF_ACPY(&key.gwy.addr, pd2.src, key.af);
- key.ext.xport.port = 0;
+ if (direction == PF_IN) {
+ key.af_gwy = pd2.af;
+ PF_ACPY(&key.ext_gwy.addr, pd2.dst, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd2.src, key.af_gwy);
+ key.ext_gwy.xport.port = 0;
key.gwy.xport.port = 0;
} else {
- PF_ACPY(&key.lan.addr, pd2.dst, key.af);
- PF_ACPY(&key.ext.addr, pd2.src, key.af);
+ key.af_lan = pd2.af;
+ PF_ACPY(&key.lan.addr, pd2.dst, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd2.src, key.af_lan);
key.lan.xport.port = 0;
- key.ext.xport.port = 0;
+ key.ext_lan.xport.port = 0;
}
STATE_LOOKUP();
- if (STATE_TRANSLATE((*state)->state_key)) {
+ sk = (*state)->state_key;
+ if (STATE_TRANSLATE(sk)) {
if (direction == PF_IN) {
- pf_change_icmp(pd2.src, NULL,
- daddr, &(*state)->state_key->lan.addr,
- 0, NULL,
+ pf_change_icmp(pd2.src, NULL, daddr,
+ &sk->lan.addr, 0, NULL,
pd2.ip_sum, icmpsum,
pd->ip_sum, 0, pd2.af);
} else {
- pf_change_icmp(pd2.dst, NULL,
- saddr, &(*state)->state_key->gwy.addr,
- 0, NULL,
+ pf_change_icmp(pd2.dst, NULL, saddr,
+ &sk->gwy.addr, 0, NULL,
pd2.ip_sum, icmpsum,
pd->ip_sum, 0, pd2.af);
}
switch (pd2.af) {
#if INET
case AF_INET:
- m = pf_lazy_makewritable(pd, m,
- ipoff2 + sizeof (h2));
- if (!m)
- return (PF_DROP);
+ if (pf_lazy_makewritable(pd, pbuf,
+ ipoff2 + sizeof(h2)) == NULL) {
+ return PF_DROP;
+ }
+ /*
+ * <XXXSCW>
+ * Xnu was missing the following...
+ */
+ pbuf_copy_back(pbuf, off, ICMP_MINLEN,
+ pd->hdr.icmp);
+ pbuf_copy_back(pbuf, ipoff2,
+ sizeof(h2), &h2);
+ break;
+ /*
+ * </XXXSCW>
+ */
#endif /* INET */
#if INET6
case AF_INET6:
- m = pf_lazy_makewritable(pd, m,
- ipoff2 + sizeof (h2_6));
- if (!m)
- return (PF_DROP);
- m_copyback(m, off,
- sizeof (struct icmp6_hdr),
+ if (pf_lazy_makewritable(pd, pbuf,
+ ipoff2 + sizeof(h2_6)) == NULL) {
+ return PF_DROP;
+ }
+ pbuf_copy_back(pbuf, off,
+ sizeof(struct icmp6_hdr),
pd->hdr.icmp6);
- m_copyback(m, ipoff2, sizeof (h2_6),
- &h2_6);
+ pbuf_copy_back(pbuf, ipoff2,
+ sizeof(h2_6), &h2_6);
break;
#endif /* INET6 */
}
}
- return (PF_PASS);
- break;
+ return PF_PASS;
}
}
}
struct pf_state_peer *dst;
struct pf_state_key_cmp key;
struct pf_grev1_hdr *grev1 = pd->hdr.grev1;
- struct mbuf *m;
key.app_state = 0;
- key.af = pd->af;
key.proto = IPPROTO_GRE;
key.proto_variant = PF_GRE_PPTP_VARIANT;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd->src, key.af);
- PF_ACPY(&key.gwy.addr, pd->dst, key.af);
+ if (direction == PF_IN) {
+ key.af_gwy = pd->af;
+ PF_ACPY(&key.ext_gwy.addr, pd->src, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd->dst, key.af_gwy);
key.gwy.xport.call_id = grev1->call_id;
} else {
- PF_ACPY(&key.lan.addr, pd->src, key.af);
- PF_ACPY(&key.ext.addr, pd->dst, key.af);
- key.ext.xport.call_id = grev1->call_id;
+ key.af_lan = pd->af;
+ PF_ACPY(&key.lan.addr, pd->src, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd->dst, key.af_lan);
+ key.ext_lan.xport.call_id = grev1->call_id;
}
STATE_LOOKUP();
}
/* update states */
- if (src->state < PFGRE1S_INITIATING)
+ if (src->state < PFGRE1S_INITIATING) {
src->state = PFGRE1S_INITIATING;
+ }
/* update expire time */
(*state)->expire = pf_time_second();
if (src->state >= PFGRE1S_INITIATING &&
dst->state >= PFGRE1S_INITIATING) {
- if ((*state)->timeout != PFTM_TCP_ESTABLISHED)
+ if ((*state)->timeout != PFTM_TCP_ESTABLISHED) {
(*state)->timeout = PFTM_GREv1_ESTABLISHED;
+ }
src->state = PFGRE1S_ESTABLISHED;
dst->state = PFGRE1S_ESTABLISHED;
} else {
(*state)->timeout = PFTM_GREv1_INITIATING;
}
- if ((*state)->state_key->app_state)
+ if ((*state)->state_key->app_state) {
(*state)->state_key->app_state->u.grev1.pptp_state->expire =
pf_time_second();
+ }
/* translate source/destination address, if necessary */
if (STATE_GRE_TRANSLATE((*state)->state_key)) {
switch (pd->af) {
#if INET
case AF_INET:
- pf_change_a(&pd->src->v4.s_addr,
+ pf_change_a(&pd->src->v4addr.s_addr,
pd->ip_sum,
- (*state)->state_key->gwy.addr.v4.s_addr, 0);
+ (*state)->state_key->gwy.addr.v4addr.s_addr, 0);
break;
#endif /* INET */
#if INET6
switch (pd->af) {
#if INET
case AF_INET:
- pf_change_a(&pd->dst->v4.s_addr,
+ pf_change_a(&pd->dst->v4addr.s_addr,
pd->ip_sum,
- (*state)->state_key->lan.addr.v4.s_addr, 0);
+ (*state)->state_key->lan.addr.v4addr.s_addr, 0);
break;
#endif /* INET */
#if INET6
}
}
- m = pf_lazy_makewritable(pd, pd->mp, off + sizeof (*grev1));
- if (!m)
- return (PF_DROP);
- m_copyback(m, off, sizeof (*grev1), grev1);
+ if (pf_lazy_makewritable(pd, pd->mp, off + sizeof(*grev1)) ==
+ NULL) {
+ return PF_DROP;
+ }
+ pbuf_copy_back(pd->mp, off, sizeof(*grev1), grev1);
}
- return (PF_PASS);
+ return PF_PASS;
}
static int
struct pf_esp_hdr *esp = pd->hdr.esp;
int action;
- memset(&key, 0, sizeof (key));
- key.af = pd->af;
+ memset(&key, 0, sizeof(key));
key.proto = IPPROTO_ESP;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd->src, key.af);
- PF_ACPY(&key.gwy.addr, pd->dst, key.af);
+ if (direction == PF_IN) {
+ key.af_gwy = pd->af;
+ PF_ACPY(&key.ext_gwy.addr, pd->src, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd->dst, key.af_gwy);
key.gwy.xport.spi = esp->spi;
} else {
- PF_ACPY(&key.lan.addr, pd->src, key.af);
- PF_ACPY(&key.ext.addr, pd->dst, key.af);
- key.ext.xport.spi = esp->spi;
+ key.af_lan = pd->af;
+ PF_ACPY(&key.lan.addr, pd->src, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd->dst, key.af_lan);
+ key.ext_lan.xport.spi = esp->spi;
}
*state = pf_find_state(kif, &key, direction);
esp->spi;
if (RB_INSERT(pf_state_tree_ext_gwy,
- &pf_statetbl_ext_gwy, sk))
+ &pf_statetbl_ext_gwy, sk)) {
pf_detach_state(s, PF_DT_SKIP_EXTGWY);
- else
+ } else {
*state = s;
+ }
}
} else {
- key.ext.xport.spi = 0;
+ key.ext_lan.xport.spi = 0;
s = pf_find_state(kif, &key, direction);
if (s) {
RB_REMOVE(pf_state_tree_lan_ext,
&pf_statetbl_lan_ext, sk);
- sk->ext.xport.spi = esp->spi;
+ sk->ext_lan.xport.spi = esp->spi;
if (RB_INSERT(pf_state_tree_lan_ext,
- &pf_statetbl_lan_ext, sk))
+ &pf_statetbl_lan_ext, sk)) {
pf_detach_state(s, PF_DT_SKIP_LANEXT);
- else
+ } else {
*state = s;
+ }
}
}
if (s) {
if (*state == 0) {
#if NPFSYNC
- if (s->creatorid == pf_status.hostid)
+ if (s->creatorid == pf_status.hostid) {
pfsync_delete_state(s);
+ }
#endif
s->timeout = PFTM_UNLINKED;
hook_runloop(&s->unlink_hooks,
- HOOK_REMOVE|HOOK_FREE);
+ HOOK_REMOVE | HOOK_FREE);
pf_src_tree_remove_state(s);
pf_free_state(s);
- return (PF_DROP);
+ return PF_DROP;
}
}
}
}
}
- if (pf_state_lookup_aux(state, kif, direction, &action))
- return (action);
+ if (pf_state_lookup_aux(state, kif, direction, &action)) {
+ return action;
+ }
if (direction == (*state)->state_key->direction) {
src = &(*state)->src;
}
/* update states */
- if (src->state < PFESPS_INITIATING)
+ if (src->state < PFESPS_INITIATING) {
src->state = PFESPS_INITIATING;
+ }
/* update expire time */
(*state)->expire = pf_time_second();
switch (pd->af) {
#if INET
case AF_INET:
- pf_change_a(&pd->src->v4.s_addr,
+ pf_change_a(&pd->src->v4addr.s_addr,
pd->ip_sum,
- (*state)->state_key->gwy.addr.v4.s_addr, 0);
+ (*state)->state_key->gwy.addr.v4addr.s_addr, 0);
break;
#endif /* INET */
#if INET6
switch (pd->af) {
#if INET
case AF_INET:
- pf_change_a(&pd->dst->v4.s_addr,
+ pf_change_a(&pd->dst->v4addr.s_addr,
pd->ip_sum,
- (*state)->state_key->lan.addr.v4.s_addr, 0);
+ (*state)->state_key->lan.addr.v4addr.s_addr, 0);
break;
#endif /* INET */
#if INET6
}
}
- return (PF_PASS);
+ return PF_PASS;
}
static int
pf_test_state_other(struct pf_state **state, int direction, struct pfi_kif *kif,
struct pf_pdesc *pd)
{
- struct pf_state_peer *src, *dst;
- struct pf_state_key_cmp key;
+ struct pf_state_peer *src, *dst;
+ struct pf_state_key_cmp key;
key.app_state = 0;
- key.af = pd->af;
key.proto = pd->proto;
- if (direction == PF_IN) {
- PF_ACPY(&key.ext.addr, pd->src, key.af);
- PF_ACPY(&key.gwy.addr, pd->dst, key.af);
- key.ext.xport.port = 0;
+ if (direction == PF_IN) {
+ key.af_gwy = pd->af;
+ PF_ACPY(&key.ext_gwy.addr, pd->src, key.af_gwy);
+ PF_ACPY(&key.gwy.addr, pd->dst, key.af_gwy);
+ key.ext_gwy.xport.port = 0;
key.gwy.xport.port = 0;
} else {
- PF_ACPY(&key.lan.addr, pd->src, key.af);
- PF_ACPY(&key.ext.addr, pd->dst, key.af);
+ key.af_lan = pd->af;
+ PF_ACPY(&key.lan.addr, pd->src, key.af_lan);
+ PF_ACPY(&key.ext_lan.addr, pd->dst, key.af_lan);
key.lan.xport.port = 0;
- key.ext.xport.port = 0;
+ key.ext_lan.xport.port = 0;
}
STATE_LOOKUP();
}
/* update states */
- if (src->state < PFOTHERS_SINGLE)
+ if (src->state < PFOTHERS_SINGLE) {
src->state = PFOTHERS_SINGLE;
- if (dst->state == PFOTHERS_SINGLE)
+ }
+ if (dst->state == PFOTHERS_SINGLE) {
dst->state = PFOTHERS_MULTIPLE;
+ }
/* update expire time */
(*state)->expire = pf_time_second();
- if (src->state == PFOTHERS_MULTIPLE && dst->state == PFOTHERS_MULTIPLE)
+ if (src->state == PFOTHERS_MULTIPLE && dst->state == PFOTHERS_MULTIPLE) {
(*state)->timeout = PFTM_OTHER_MULTIPLE;
- else
+ } else {
(*state)->timeout = PFTM_OTHER_SINGLE;
+ }
/* translate source/destination address, if necessary */
if (STATE_ADDR_TRANSLATE((*state)->state_key)) {
switch (pd->af) {
#if INET
case AF_INET:
- pf_change_a(&pd->src->v4.s_addr,
+ pf_change_a(&pd->src->v4addr.s_addr,
pd->ip_sum,
- (*state)->state_key->gwy.addr.v4.s_addr,
+ (*state)->state_key->gwy.addr.v4addr.s_addr,
0);
break;
#endif /* INET */
switch (pd->af) {
#if INET
case AF_INET:
- pf_change_a(&pd->dst->v4.s_addr,
+ pf_change_a(&pd->dst->v4addr.s_addr,
pd->ip_sum,
- (*state)->state_key->lan.addr.v4.s_addr,
+ (*state)->state_key->lan.addr.v4addr.s_addr,
0);
break;
#endif /* INET */
}
}
- return (PF_PASS);
+ return PF_PASS;
}
/*
* h must be at "ipoff" on the mbuf chain.
*/
void *
-pf_pull_hdr(struct mbuf *m, int off, void *p, int len,
+pf_pull_hdr(pbuf_t *pbuf, int off, void *p, int len,
u_short *actionp, u_short *reasonp, sa_family_t af)
{
switch (af) {
#if INET
case AF_INET: {
- struct ip *h = mtod(m, struct ip *);
- u_int16_t fragoff = (ntohs(h->ip_off) & IP_OFFMASK) << 3;
+ struct ip *h = pbuf->pb_data;
+ u_int16_t fragoff = (ntohs(h->ip_off) & IP_OFFMASK) << 3;
if (fragoff) {
if (fragoff >= len) {
ACTION_SET(actionp, PF_DROP);
REASON_SET(reasonp, PFRES_FRAG);
}
- return (NULL);
+ return NULL;
}
- if (m->m_pkthdr.len < off + len ||
+ if (pbuf->pb_packet_len < (unsigned)(off + len) ||
ntohs(h->ip_len) < off + len) {
ACTION_SET(actionp, PF_DROP);
REASON_SET(reasonp, PFRES_SHORT);
- return (NULL);
+ return NULL;
}
break;
}
#endif /* INET */
#if INET6
case AF_INET6: {
- struct ip6_hdr *h = mtod(m, struct ip6_hdr *);
+ struct ip6_hdr *h = pbuf->pb_data;
- if (m->m_pkthdr.len < off + len ||
- (ntohs(h->ip6_plen) + sizeof (struct ip6_hdr)) <
+ if (pbuf->pb_packet_len < (unsigned)(off + len) ||
+ (ntohs(h->ip6_plen) + sizeof(struct ip6_hdr)) <
(unsigned)(off + len)) {
ACTION_SET(actionp, PF_DROP);
REASON_SET(reasonp, PFRES_SHORT);
- return (NULL);
+ return NULL;
}
break;
}
#endif /* INET6 */
}
- m_copydata(m, off, len, p);
- return (p);
+ pbuf_copy_data(pbuf, off, len, p);
+ return p;
}
int
pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *kif)
{
#pragma unused(kif)
- struct sockaddr_in *dst;
- int ret = 1;
+ struct sockaddr_in *dst;
+ int ret = 1;
#if INET6
- struct sockaddr_in6 *dst6;
- struct route_in6 ro;
+ struct sockaddr_in6 *dst6;
+ struct route_in6 ro;
#else
- struct route ro;
+ struct route ro;
#endif
- bzero(&ro, sizeof (ro));
+ bzero(&ro, sizeof(ro));
switch (af) {
case AF_INET:
dst = satosin(&ro.ro_dst);
dst->sin_family = AF_INET;
- dst->sin_len = sizeof (*dst);
- dst->sin_addr = addr->v4;
+ dst->sin_len = sizeof(*dst);
+ dst->sin_addr = addr->v4addr;
break;
#if INET6
case AF_INET6:
dst6 = (struct sockaddr_in6 *)&ro.ro_dst;
dst6->sin6_family = AF_INET6;
- dst6->sin6_len = sizeof (*dst6);
- dst6->sin6_addr = addr->v6;
+ dst6->sin6_len = sizeof(*dst6);
+ dst6->sin6_addr = addr->v6addr;
break;
#endif /* INET6 */
default:
- return (0);
+ return 0;
}
/* XXX: IFT_ENC is not currently used by anything*/
/* Skip checks for ipsec interfaces */
- if (kif != NULL && kif->pfik_ifp->if_type == IFT_ENC)
+ if (kif != NULL && kif->pfik_ifp->if_type == IFT_ENC) {
goto out;
+ }
/* XXX: what is the point of this? */
rtalloc((struct route *)&ro);
out:
ROUTE_RELEASE(&ro);
- return (ret);
+ return ret;
}
int
pf_rtlabel_match(struct pf_addr *addr, sa_family_t af, struct pf_addr_wrap *aw)
{
#pragma unused(aw)
- struct sockaddr_in *dst;
+ struct sockaddr_in *dst;
#if INET6
- struct sockaddr_in6 *dst6;
- struct route_in6 ro;
+ struct sockaddr_in6 *dst6;
+ struct route_in6 ro;
#else
- struct route ro;
+ struct route ro;
#endif
- int ret = 0;
+ int ret = 0;
- bzero(&ro, sizeof (ro));
+ bzero(&ro, sizeof(ro));
switch (af) {
case AF_INET:
dst = satosin(&ro.ro_dst);
dst->sin_family = AF_INET;
- dst->sin_len = sizeof (*dst);
- dst->sin_addr = addr->v4;
+ dst->sin_len = sizeof(*dst);
+ dst->sin_addr = addr->v4addr;
break;
#if INET6
case AF_INET6:
dst6 = (struct sockaddr_in6 *)&ro.ro_dst;
dst6->sin6_family = AF_INET6;
- dst6->sin6_len = sizeof (*dst6);
- dst6->sin6_addr = addr->v6;
+ dst6->sin6_len = sizeof(*dst6);
+ dst6->sin6_addr = addr->v6addr;
break;
#endif /* INET6 */
default:
- return (0);
+ return 0;
}
/* XXX: what is the point of this? */
ROUTE_RELEASE(&ro);
- return (ret);
+ return ret;
}
#if INET
static void
-pf_route(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
+pf_route(pbuf_t **pbufp, struct pf_rule *r, int dir, struct ifnet *oifp,
struct pf_state *s, struct pf_pdesc *pd)
{
#pragma unused(pd)
- struct mbuf *m0, *m1;
- struct route iproute;
- struct route *ro = &iproute;
- struct sockaddr_in *dst;
- struct ip *ip;
- struct ifnet *ifp = NULL;
- struct pf_addr naddr;
- struct pf_src_node *sn = NULL;
- int error = 0;
- uint32_t sw_csum;
-
- bzero(&iproute, sizeof (iproute));
-
- if (m == NULL || *m == NULL || r == NULL ||
- (dir != PF_IN && dir != PF_OUT) || oifp == NULL)
+ struct mbuf *m0, *m1;
+ struct route iproute;
+ struct route *ro = &iproute;
+ struct sockaddr_in *dst;
+ struct ip *ip;
+ struct ifnet *ifp = NULL;
+ struct pf_addr naddr;
+ struct pf_src_node *sn = NULL;
+ int error = 0;
+ uint32_t sw_csum;
+ int interface_mtu = 0;
+ bzero(&iproute, sizeof(iproute));
+
+ if (pbufp == NULL || !pbuf_is_valid(*pbufp) || r == NULL ||
+ (dir != PF_IN && dir != PF_OUT) || oifp == NULL) {
panic("pf_route: invalid parameters");
+ }
if (pd->pf_mtag->pftag_routed++ > 3) {
- m0 = *m;
- *m = NULL;
+ pbuf_destroy(*pbufp);
+ *pbufp = NULL;
+ m0 = NULL;
goto bad;
}
+ /*
+ * Since this is something of an edge case and may involve the
+ * host stack (for routing, at least for now), we convert the
+ * incoming pbuf into an mbuf.
+ */
if (r->rt == PF_DUPTO) {
- if ((m0 = m_copym(*m, 0, M_COPYALL, M_NOWAIT)) == NULL)
- return;
+ m0 = pbuf_clone_to_mbuf(*pbufp);
+ } else if ((r->rt == PF_REPLYTO) == (r->direction == dir)) {
+ return;
} else {
- if ((r->rt == PF_REPLYTO) == (r->direction == dir))
- return;
- m0 = *m;
+ /* We're going to consume this packet */
+ m0 = pbuf_to_mbuf(*pbufp, TRUE);
+ *pbufp = NULL;
+ }
+
+ if (m0 == NULL) {
+ goto bad;
}
- if (m0->m_len < (int)sizeof (struct ip)) {
+ /* We now have the packet in an mbuf (m0) */
+
+ if (m0->m_len < (int)sizeof(struct ip)) {
DPFPRINTF(PF_DEBUG_URGENT,
- ("pf_route: m0->m_len < sizeof (struct ip)\n"));
+ ("pf_route: packet length < sizeof (struct ip)\n"));
goto bad;
}
dst = satosin((void *)&ro->ro_dst);
dst->sin_family = AF_INET;
- dst->sin_len = sizeof (*dst);
+ dst->sin_len = sizeof(*dst);
dst->sin_addr = ip->ip_dst;
if (r->rt == PF_FASTROUTE) {
RT_LOCK(ro->ro_rt);
ro->ro_rt->rt_use++;
- if (ro->ro_rt->rt_flags & RTF_GATEWAY)
+ if (ro->ro_rt->rt_flags & RTF_GATEWAY) {
dst = satosin((void *)ro->ro_rt->rt_gateway);
+ }
RT_UNLOCK(ro->ro_rt);
} else {
if (TAILQ_EMPTY(&r->rpool.list)) {
if (s == NULL) {
pf_map_addr(AF_INET, r, (struct pf_addr *)&ip->ip_src,
&naddr, NULL, &sn);
- if (!PF_AZERO(&naddr, AF_INET))
- dst->sin_addr.s_addr = naddr.v4.s_addr;
+ if (!PF_AZERO(&naddr, AF_INET)) {
+ dst->sin_addr.s_addr = naddr.v4addr.s_addr;
+ }
ifp = r->rpool.cur->kif ?
r->rpool.cur->kif->pfik_ifp : NULL;
} else {
- if (!PF_AZERO(&s->rt_addr, AF_INET))
+ if (!PF_AZERO(&s->rt_addr, AF_INET)) {
dst->sin_addr.s_addr =
- s->rt_addr.v4.s_addr;
+ s->rt_addr.v4addr.s_addr;
+ }
ifp = s->rt_kif ? s->rt_kif->pfik_ifp : NULL;
}
}
- if (ifp == NULL)
+ if (ifp == NULL) {
goto bad;
+ }
if (oifp != ifp) {
- if (pf_test(PF_OUT, ifp, &m0, NULL, NULL) != PF_PASS)
+ if (pf_test_mbuf(PF_OUT, ifp, &m0, NULL, NULL) != PF_PASS) {
goto bad;
- else if (m0 == NULL)
+ } else if (m0 == NULL) {
goto done;
- if (m0->m_len < (int)sizeof (struct ip)) {
+ }
+ if (m0->m_len < (int)sizeof(struct ip)) {
DPFPRINTF(PF_DEBUG_URGENT,
- ("pf_route: m0->m_len < sizeof (struct ip)\n"));
+ ("pf_route: packet length < sizeof (struct ip)\n"));
goto bad;
}
ip = mtod(m0, struct ip *);
ip_output_checksum(ifp, m0, ((ip->ip_hl) << 2), ntohs(ip->ip_len),
&sw_csum);
- if (ntohs(ip->ip_len) <= ifp->if_mtu || TSO_IPV4_OK(ifp, m0) ||
+ interface_mtu = ifp->if_mtu;
+
+ if (INTF_ADJUST_MTU_FOR_CLAT46(ifp)) {
+ interface_mtu = IN6_LINKMTU(ifp);
+ /* Further adjust the size for CLAT46 expansion */
+ interface_mtu -= CLAT46_HDR_EXPANSION_OVERHD;
+ }
+
+ if (ntohs(ip->ip_len) <= interface_mtu || TSO_IPV4_OK(ifp, m0) ||
(!(ip->ip_off & htons(IP_DF)) &&
(ifp->if_hwassist & CSUM_FRAGMENT))) {
ip->ip_sum = 0;
ipstat.ips_cantfrag++;
if (r->rt != PF_DUPTO) {
icmp_error(m0, ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG, 0,
- ifp->if_mtu);
+ interface_mtu);
goto done;
- } else
+ } else {
goto bad;
+ }
}
m1 = m0;
NTOHS(ip->ip_off);
NTOHS(ip->ip_len);
#endif
- error = ip_fragment(m0, ifp, ifp->if_mtu, sw_csum);
+ error = ip_fragment(m0, ifp, interface_mtu, sw_csum);
if (error) {
m0 = NULL;
for (m0 = m1; m0; m0 = m1) {
m1 = m0->m_nextpkt;
m0->m_nextpkt = 0;
- if (error == 0)
+ if (error == 0) {
error = ifnet_output(ifp, PF_INET, m0, ro->ro_rt,
sintosa(dst));
- else
+ } else {
m_freem(m0);
+ }
}
- if (error == 0)
+ if (error == 0) {
ipstat.ips_fragmented++;
+ }
done:
- if (r->rt != PF_DUPTO)
- *m = NULL;
-
ROUTE_RELEASE(&iproute);
return;
bad:
- m_freem(m0);
+ if (m0) {
+ m_freem(m0);
+ }
goto done;
}
#endif /* INET */
#if INET6
static void
-pf_route6(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
+pf_route6(pbuf_t **pbufp, struct pf_rule *r, int dir, struct ifnet *oifp,
struct pf_state *s, struct pf_pdesc *pd)
{
#pragma unused(pd)
- struct mbuf *m0;
- struct route_in6 ip6route;
- struct route_in6 *ro;
- struct sockaddr_in6 *dst;
- struct ip6_hdr *ip6;
- struct ifnet *ifp = NULL;
- struct pf_addr naddr;
- struct pf_src_node *sn = NULL;
- int error = 0;
-
- if (m == NULL || *m == NULL || r == NULL ||
- (dir != PF_IN && dir != PF_OUT) || oifp == NULL)
+ struct mbuf *m0;
+ struct route_in6 ip6route;
+ struct route_in6 *ro;
+ struct sockaddr_in6 *dst;
+ struct ip6_hdr *ip6;
+ struct ifnet *ifp = NULL;
+ struct pf_addr naddr;
+ struct pf_src_node *sn = NULL;
+ int error = 0;
+
+ if (pbufp == NULL || !pbuf_is_valid(*pbufp) || r == NULL ||
+ (dir != PF_IN && dir != PF_OUT) || oifp == NULL) {
panic("pf_route6: invalid parameters");
+ }
if (pd->pf_mtag->pftag_routed++ > 3) {
- m0 = *m;
- *m = NULL;
+ pbuf_destroy(*pbufp);
+ *pbufp = NULL;
+ m0 = NULL;
goto bad;
}
+ /*
+ * Since this is something of an edge case and may involve the
+ * host stack (for routing, at least for now), we convert the
+ * incoming pbuf into an mbuf.
+ */
if (r->rt == PF_DUPTO) {
- if ((m0 = m_copym(*m, 0, M_COPYALL, M_NOWAIT)) == NULL)
- return;
+ m0 = pbuf_clone_to_mbuf(*pbufp);
+ } else if ((r->rt == PF_REPLYTO) == (r->direction == dir)) {
+ return;
} else {
- if ((r->rt == PF_REPLYTO) == (r->direction == dir))
- return;
- m0 = *m;
+ /* We're about to consume this packet */
+ m0 = pbuf_to_mbuf(*pbufp, TRUE);
+ *pbufp = NULL;
}
- if (m0->m_len < (int)sizeof (struct ip6_hdr)) {
+ if (m0 == NULL) {
+ goto bad;
+ }
+
+ if (m0->m_len < (int)sizeof(struct ip6_hdr)) {
DPFPRINTF(PF_DEBUG_URGENT,
("pf_route6: m0->m_len < sizeof (struct ip6_hdr)\n"));
goto bad;
ip6 = mtod(m0, struct ip6_hdr *);
ro = &ip6route;
- bzero((caddr_t)ro, sizeof (*ro));
+ bzero((caddr_t)ro, sizeof(*ro));
dst = (struct sockaddr_in6 *)&ro->ro_dst;
dst->sin6_family = AF_INET6;
- dst->sin6_len = sizeof (*dst);
+ dst->sin6_len = sizeof(*dst);
dst->sin6_addr = ip6->ip6_dst;
- /* Cheat. XXX why only in the v6 case??? */
+ /* Cheat. XXX why only in the v6addr case??? */
if (r->rt == PF_FASTROUTE) {
struct pf_mtag *pf_mtag;
- if ((pf_mtag = pf_get_mtag(m0)) == NULL)
+ if ((pf_mtag = pf_get_mtag(m0)) == NULL) {
goto bad;
+ }
pf_mtag->pftag_flags |= PF_TAG_GENERATED;
ip6_output(m0, NULL, NULL, 0, NULL, NULL, NULL);
return;
goto bad;
}
if (s == NULL) {
- pf_map_addr(AF_INET6, r, (struct pf_addr *)&ip6->ip6_src,
+ pf_map_addr(AF_INET6, r, (struct pf_addr *)(uintptr_t)&ip6->ip6_src,
&naddr, NULL, &sn);
- if (!PF_AZERO(&naddr, AF_INET6))
+ if (!PF_AZERO(&naddr, AF_INET6)) {
PF_ACPY((struct pf_addr *)&dst->sin6_addr,
&naddr, AF_INET6);
+ }
ifp = r->rpool.cur->kif ? r->rpool.cur->kif->pfik_ifp : NULL;
} else {
- if (!PF_AZERO(&s->rt_addr, AF_INET6))
+ if (!PF_AZERO(&s->rt_addr, AF_INET6)) {
PF_ACPY((struct pf_addr *)&dst->sin6_addr,
&s->rt_addr, AF_INET6);
+ }
ifp = s->rt_kif ? s->rt_kif->pfik_ifp : NULL;
}
- if (ifp == NULL)
+ if (ifp == NULL) {
goto bad;
+ }
if (oifp != ifp) {
- if (pf_test6(PF_OUT, ifp, &m0, NULL, NULL) != PF_PASS)
+ if (pf_test6_mbuf(PF_OUT, ifp, &m0, NULL, NULL) != PF_PASS) {
goto bad;
- else if (m0 == NULL)
+ } else if (m0 == NULL) {
goto done;
- if (m0->m_len < (int)sizeof (struct ip6_hdr)) {
+ }
+ if (m0->m_len < (int)sizeof(struct ip6_hdr)) {
DPFPRINTF(PF_DEBUG_URGENT, ("pf_route6: m0->m_len "
"< sizeof (struct ip6_hdr)\n"));
goto bad;
* If the packet is too large for the outgoing interface,
* send back an icmp6 error.
*/
- if (IN6_IS_SCOPE_EMBED(&dst->sin6_addr))
+ if (IN6_IS_SCOPE_EMBED(&dst->sin6_addr)) {
dst->sin6_addr.s6_addr16[1] = htons(ifp->if_index);
+ }
if ((unsigned)m0->m_pkthdr.len <= ifp->if_mtu) {
error = nd6_output(ifp, ifp, m0, dst, NULL, NULL);
} else {
in6_ifstat_inc(ifp, ifs6_in_toobig);
- if (r->rt != PF_DUPTO)
+ if (r->rt != PF_DUPTO) {
icmp6_error(m0, ICMP6_PACKET_TOO_BIG, 0, ifp->if_mtu);
- else
+ } else {
goto bad;
+ }
}
done:
- if (r->rt != PF_DUPTO)
- *m = NULL;
return;
bad:
- m_freem(m0);
+ if (m0) {
+ m_freem(m0);
+ }
goto done;
}
#endif /* INET6 */
* returns 0 when the checksum is valid, otherwise returns 1.
*/
static int
-pf_check_proto_cksum(struct mbuf *m, int off, int len, u_int8_t p,
+pf_check_proto_cksum(pbuf_t *pbuf, int off, int len, u_int8_t p,
sa_family_t af)
{
u_int16_t sum;
* is partially-computed (only 16-bit summation), do it in
* software below.
*/
- if ((m->m_pkthdr.csum_flags &
+ if ((*pbuf->pb_csum_flags &
(CSUM_DATA_VALID | CSUM_PSEUDO_HDR)) ==
(CSUM_DATA_VALID | CSUM_PSEUDO_HDR) &&
- (m->m_pkthdr.csum_data ^ 0xffff) == 0) {
- return (0);
+ (*pbuf->pb_csum_data ^ 0xffff) == 0) {
+ return 0;
}
break;
case IPPROTO_ICMP:
#endif /* INET6 */
break;
default:
- return (1);
+ return 1;
+ }
+ if (off < (int)sizeof(struct ip) || len < (int)sizeof(struct udphdr)) {
+ return 1;
+ }
+ if (pbuf->pb_packet_len < (unsigned)(off + len)) {
+ return 1;
}
- if (off < (int)sizeof (struct ip) || len < (int)sizeof (struct udphdr))
- return (1);
- if (m->m_pkthdr.len < off + len)
- return (1);
switch (af) {
#if INET
case AF_INET:
if (p == IPPROTO_ICMP) {
- if (m->m_len < off)
- return (1);
+#if 0
+ if (m->m_len < off) {
+ return 1;
+ }
m->m_data += off;
m->m_len -= off;
sum = in_cksum(m, len);
m->m_data -= off;
m->m_len += off;
+#else
+ if (pbuf->pb_contig_len < (unsigned)off) {
+ return 1;
+ }
+ sum = pbuf_inet_cksum(pbuf, 0, off, len);
+#endif
} else {
- if (m->m_len < (int)sizeof (struct ip))
- return (1);
- sum = inet_cksum(m, p, off, len);
+ if (pbuf->pb_contig_len < (int)sizeof(struct ip)) {
+ return 1;
+ }
+ sum = pbuf_inet_cksum(pbuf, p, off, len);
}
break;
#endif /* INET */
#if INET6
case AF_INET6:
- if (m->m_len < (int)sizeof (struct ip6_hdr))
- return (1);
- sum = inet6_cksum(m, p, off, len);
+ if (pbuf->pb_contig_len < (int)sizeof(struct ip6_hdr)) {
+ return 1;
+ }
+ sum = pbuf_inet6_cksum(pbuf, p, off, len);
break;
#endif /* INET6 */
default:
- return (1);
+ return 1;
}
if (sum) {
switch (p) {
break;
#endif /* INET6 */
}
- return (1);
+ return 1;
}
- return (0);
+ return 0;
}
#if INET
-#define PF_APPLE_UPDATE_PDESC_IPv4() \
- do { \
- if (m && pd.mp && m != pd.mp) { \
- m = pd.mp; \
- h = mtod(m, struct ip *); \
- pd.pf_mtag = pf_get_mtag(m); \
- } \
+#define PF_APPLE_UPDATE_PDESC_IPv4() \
+ do { \
+ if (pbuf && pd.mp && pbuf != pd.mp) { \
+ pbuf = pd.mp; \
+ h = pbuf->pb_data; \
+ pd.pf_mtag = pf_get_mtag_pbuf(pbuf); \
+ } \
} while (0)
int
-pf_test(int dir, struct ifnet *ifp, struct mbuf **m0,
+pf_test_mbuf(int dir, struct ifnet *ifp, struct mbuf **m0,
+ struct ether_header *eh, struct ip_fw_args *fwa)
+{
+ pbuf_t pbuf_store, *pbuf;
+ int rv;
+
+ pbuf_init_mbuf(&pbuf_store, *m0, (*m0)->m_pkthdr.rcvif);
+ pbuf = &pbuf_store;
+
+ rv = pf_test(dir, ifp, &pbuf, eh, fwa);
+
+ if (pbuf_is_valid(pbuf)) {
+ *m0 = pbuf->pb_mbuf;
+ pbuf->pb_mbuf = NULL;
+ pbuf_destroy(pbuf);
+ } else {
+ *m0 = NULL;
+ }
+
+ return rv;
+}
+
+int
+pf_test(int dir, struct ifnet *ifp, pbuf_t **pbufp,
struct ether_header *eh, struct ip_fw_args *fwa)
{
#if !DUMMYNET
#pragma unused(fwa)
#endif
- struct pfi_kif *kif;
- u_short action = PF_PASS, reason = 0, log = 0;
- struct mbuf *m = *m0;
- struct ip *h = 0;
- struct pf_rule *a = NULL, *r = &pf_default_rule, *tr, *nr;
- struct pf_state *s = NULL;
- struct pf_state_key *sk = NULL;
- struct pf_ruleset *ruleset = NULL;
- struct pf_pdesc pd;
- int off, dirndx, pqid = 0;
+ struct pfi_kif *kif;
+ u_short action = PF_PASS, reason = 0, log = 0;
+ pbuf_t *pbuf = *pbufp;
+ struct ip *h = 0;
+ struct pf_rule *a = NULL, *r = &pf_default_rule, *tr, *nr;
+ struct pf_state *s = NULL;
+ struct pf_state_key *sk = NULL;
+ struct pf_ruleset *ruleset = NULL;
+ struct pf_pdesc pd;
+ int off, dirndx, pqid = 0;
+
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if (!pf_status.running)
- return (PF_PASS);
+ if (!pf_status.running) {
+ return PF_PASS;
+ }
- memset(&pd, 0, sizeof (pd));
+ memset(&pd, 0, sizeof(pd));
- if ((pd.pf_mtag = pf_get_mtag(m)) == NULL) {
+ if ((pd.pf_mtag = pf_get_mtag_pbuf(pbuf)) == NULL) {
DPFPRINTF(PF_DEBUG_URGENT,
- ("pf_test: pf_get_mtag returned NULL\n"));
- return (PF_DROP);
+ ("pf_test: pf_get_mtag_pbuf returned NULL\n"));
+ return PF_DROP;
}
- if (pd.pf_mtag->pftag_flags & PF_TAG_GENERATED)
- return (PF_PASS);
+ if (pd.pf_mtag->pftag_flags & PF_TAG_GENERATED) {
+ return PF_PASS;
+ }
kif = (struct pfi_kif *)ifp->if_pf_kif;
if (kif == NULL) {
DPFPRINTF(PF_DEBUG_URGENT,
("pf_test: kif == NULL, if_name %s\n", ifp->if_name));
- return (PF_DROP);
+ return PF_DROP;
+ }
+ if (kif->pfik_flags & PFI_IFLAG_SKIP) {
+ return PF_PASS;
}
- if (kif->pfik_flags & PFI_IFLAG_SKIP)
- return (PF_PASS);
-
- VERIFY(m->m_flags & M_PKTHDR);
/* initialize enough of pd for the done label */
- h = mtod(m, struct ip *);
- pd.mp = m;
+ h = pbuf->pb_data;
+ pd.mp = pbuf;
pd.lmw = 0;
- pd.pf_mtag = pf_get_mtag(m);
+ pd.pf_mtag = pf_get_mtag_pbuf(pbuf);
pd.src = (struct pf_addr *)&h->ip_src;
pd.dst = (struct pf_addr *)&h->ip_dst;
- PF_ACPY(&pd.baddr, dir == PF_OUT ? pd.src : pd.dst, AF_INET);
+ PF_ACPY(&pd.baddr, pd.src, AF_INET);
+ PF_ACPY(&pd.bdaddr, pd.dst, AF_INET);
pd.ip_sum = &h->ip_sum;
pd.proto = h->ip_p;
pd.proto_variant = 0;
pd.af = AF_INET;
pd.tos = h->ip_tos;
+ pd.ttl = h->ip_ttl;
pd.tot_len = ntohs(h->ip_len);
pd.eh = eh;
- if (m->m_pkthdr.len < (int)sizeof (*h)) {
+ if (pbuf->pb_packet_len < (int)sizeof(*h)) {
action = PF_DROP;
REASON_SET(&reason, PFRES_SHORT);
log = 1;
}
#if DUMMYNET
- if (fwa != NULL && fwa->fwa_pf_rule != NULL)
+ if (fwa != NULL && fwa->fwa_pf_rule != NULL) {
goto nonormalize;
+ }
#endif /* DUMMYNET */
/* We do IP header normalization and packet reassembly here */
- action = pf_normalize_ip(m0, dir, kif, &reason, &pd);
- pd.mp = m = *m0;
+ action = pf_normalize_ip(pbuf, dir, kif, &reason, &pd);
if (action != PF_PASS || pd.lmw < 0) {
action = PF_DROP;
goto done;
#if DUMMYNET
nonormalize:
#endif /* DUMMYNET */
- m = *m0; /* pf_normalize messes with m0 */
- h = mtod(m, struct ip *);
+ /* pf_normalize can mess with pb_data */
+ h = pbuf->pb_data;
off = h->ip_hl << 2;
- if (off < (int)sizeof (*h)) {
+ if (off < (int)sizeof(*h)) {
action = PF_DROP;
REASON_SET(&reason, PFRES_SHORT);
log = 1;
pd.src = (struct pf_addr *)&h->ip_src;
pd.dst = (struct pf_addr *)&h->ip_dst;
- PF_ACPY(&pd.baddr, dir == PF_OUT ? pd.src : pd.dst, AF_INET);
+ PF_ACPY(&pd.baddr, pd.src, AF_INET);
+ PF_ACPY(&pd.bdaddr, pd.dst, AF_INET);
pd.ip_sum = &h->ip_sum;
pd.proto = h->ip_p;
pd.proto_variant = 0;
- pd.mp = m;
+ pd.mp = pbuf;
pd.lmw = 0;
- pd.pf_mtag = pf_get_mtag(m);
+ pd.pf_mtag = pf_get_mtag_pbuf(pbuf);
pd.af = AF_INET;
pd.tos = h->ip_tos;
- pd.sc = MBUF_SCIDX(mbuf_get_service_class(m));
+ pd.ttl = h->ip_ttl;
+ pd.sc = MBUF_SCIDX(pbuf_get_service_class(pbuf));
pd.tot_len = ntohs(h->ip_len);
pd.eh = eh;
- if (m->m_pkthdr.pkt_flags & PKTF_FLOW_ID) {
- pd.flowsrc = m->m_pkthdr.pkt_flowsrc;
- pd.flowhash = m->m_pkthdr.pkt_flowid;
- pd.pktflags = (m->m_pkthdr.pkt_flags & PKTF_FLOW_MASK);
+ if (*pbuf->pb_flags & PKTF_FLOW_ID) {
+ pd.flowsrc = *pbuf->pb_flowsrc;
+ pd.flowhash = *pbuf->pb_flowid;
+ pd.pktflags = *pbuf->pb_flags & PKTF_FLOW_MASK;
}
/* handle fragments that didn't get reassembled by normalization */
pd.flags |= PFDESC_IP_FRAG;
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
- action = pf_test_fragment(&r, dir, kif, m, h,
+ action = pf_test_fragment(&r, dir, kif, pbuf, h,
&pd, &a, &ruleset);
goto done;
}
switch (h->ip_p) {
-
case IPPROTO_TCP: {
- struct tcphdr th;
+ struct tcphdr th;
pd.hdr.tcp = &th;
- if (!pf_pull_hdr(m, off, &th, sizeof (th),
+ if (!pf_pull_hdr(pbuf, off, &th, sizeof(th),
&action, &reason, AF_INET)) {
log = action != PF_PASS;
goto done;
}
pd.p_len = pd.tot_len - off - (th.th_off << 2);
- if ((th.th_flags & TH_ACK) && pd.p_len == 0)
+ if ((th.th_flags & TH_ACK) && pd.p_len == 0) {
pqid = 1;
+ }
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
- action = pf_normalize_tcp(dir, kif, m, 0, off, h, &pd);
- if (pd.lmw < 0)
+ action = pf_normalize_tcp(dir, kif, pbuf, 0, off, h, &pd);
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv4();
- if (action == PF_DROP)
+ if (action == PF_DROP) {
goto done;
- action = pf_test_state_tcp(&s, dir, kif, m, off, h, &pd,
+ }
+ action = pf_test_state_tcp(&s, dir, kif, pbuf, off, h, &pd,
&reason);
- if (pd.lmw < 0)
+ if (action == PF_NAT64) {
+ goto done;
+ }
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv4();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
+ } else if (s == NULL) {
action = pf_test_rule(&r, &s, dir, kif,
- m, off, h, &pd, &a, &ruleset, NULL);
+ pbuf, off, h, &pd, &a, &ruleset, NULL);
+ }
break;
}
case IPPROTO_UDP: {
- struct udphdr uh;
+ struct udphdr uh;
pd.hdr.udp = &uh;
- if (!pf_pull_hdr(m, off, &uh, sizeof (uh),
+ if (!pf_pull_hdr(pbuf, off, &uh, sizeof(uh),
&action, &reason, AF_INET)) {
log = action != PF_PASS;
goto done;
}
if (uh.uh_dport == 0 ||
- ntohs(uh.uh_ulen) > m->m_pkthdr.len - off ||
- ntohs(uh.uh_ulen) < sizeof (struct udphdr)) {
+ ntohs(uh.uh_ulen) > pbuf->pb_packet_len - off ||
+ ntohs(uh.uh_ulen) < sizeof(struct udphdr)) {
action = PF_DROP;
REASON_SET(&reason, PFRES_SHORT);
goto done;
}
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
- action = pf_test_state_udp(&s, dir, kif, m, off, h, &pd,
+ action = pf_test_state_udp(&s, dir, kif, pbuf, off, h, &pd,
&reason);
- if (pd.lmw < 0)
+ if (action == PF_NAT64) {
goto done;
+ }
+ if (pd.lmw < 0) {
+ goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv4();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
+ } else if (s == NULL) {
action = pf_test_rule(&r, &s, dir, kif,
- m, off, h, &pd, &a, &ruleset, NULL);
+ pbuf, off, h, &pd, &a, &ruleset, NULL);
+ }
break;
}
case IPPROTO_ICMP: {
- struct icmp ih;
+ struct icmp ih;
pd.hdr.icmp = &ih;
- if (!pf_pull_hdr(m, off, &ih, ICMP_MINLEN,
+ if (!pf_pull_hdr(pbuf, off, &ih, ICMP_MINLEN,
&action, &reason, AF_INET)) {
log = action != PF_PASS;
goto done;
}
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
- action = pf_test_state_icmp(&s, dir, kif, m, off, h, &pd,
+ action = pf_test_state_icmp(&s, dir, kif, pbuf, off, h, &pd,
&reason);
- if (pd.lmw < 0)
+ if (action == PF_NAT64) {
+ goto done;
+ }
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv4();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
+ } else if (s == NULL) {
action = pf_test_rule(&r, &s, dir, kif,
- m, off, h, &pd, &a, &ruleset, NULL);
+ pbuf, off, h, &pd, &a, &ruleset, NULL);
+ }
break;
}
case IPPROTO_ESP: {
- struct pf_esp_hdr esp;
+ struct pf_esp_hdr esp;
pd.hdr.esp = &esp;
- if (!pf_pull_hdr(m, off, &esp, sizeof (esp), &action, &reason,
+ if (!pf_pull_hdr(pbuf, off, &esp, sizeof(esp), &action, &reason,
AF_INET)) {
log = action != PF_PASS;
goto done;
}
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
action = pf_test_state_esp(&s, dir, kif, off, &pd);
- if (pd.lmw < 0)
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv4();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
+ } else if (s == NULL) {
action = pf_test_rule(&r, &s, dir, kif,
- m, off, h, &pd, &a, &ruleset, NULL);
+ pbuf, off, h, &pd, &a, &ruleset, NULL);
+ }
break;
}
case IPPROTO_GRE: {
- struct pf_grev1_hdr grev1;
+ struct pf_grev1_hdr grev1;
pd.hdr.grev1 = &grev1;
- if (!pf_pull_hdr(m, off, &grev1, sizeof (grev1), &action,
+ if (!pf_pull_hdr(pbuf, off, &grev1, sizeof(grev1), &action,
&reason, AF_INET)) {
log = (action != PF_PASS);
goto done;
}
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
if ((ntohs(grev1.flags) & PF_GRE_FLAG_VERSION_MASK) == 1 &&
ntohs(grev1.protocol_type) == PF_GRE_PPP_ETHERTYPE) {
if (ntohs(grev1.payload_length) >
- m->m_pkthdr.len - off) {
+ pbuf->pb_packet_len - off) {
action = PF_DROP;
REASON_SET(&reason, PFRES_SHORT);
goto done;
}
pd.proto_variant = PF_GRE_PPTP_VARIANT;
action = pf_test_state_grev1(&s, dir, kif, off, &pd);
- if (pd.lmw < 0) goto done;
+ if (pd.lmw < 0) {
+ goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv4();
if (action == PF_PASS) {
#if NPFSYNC
log = s->log;
break;
} else if (s == NULL) {
- action = pf_test_rule(&r, &s, dir, kif, m, off,
- h, &pd, &a, &ruleset, NULL);
- if (action == PF_PASS)
+ action = pf_test_rule(&r, &s, dir, kif, pbuf,
+ off, h, &pd, &a, &ruleset, NULL);
+ if (action == PF_PASS) {
break;
+ }
}
}
default:
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
action = pf_test_state_other(&s, dir, kif, &pd);
- if (pd.lmw < 0)
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv4();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
- action = pf_test_rule(&r, &s, dir, kif, m, off, h,
+ } else if (s == NULL) {
+ action = pf_test_rule(&r, &s, dir, kif, pbuf, off, h,
&pd, &a, &ruleset, NULL);
+ }
break;
}
done:
- *m0 = pd.mp;
- PF_APPLE_UPDATE_PDESC_IPv4();
-
- if (action == PF_PASS && h->ip_hl > 5 &&
- !((s && s->allow_opts) || r->allow_opts)) {
- action = PF_DROP;
- REASON_SET(&reason, PFRES_IPOPTIONS);
- log = 1;
- DPFPRINTF(PF_DEBUG_MISC,
- ("pf: dropping packet with ip options [hlen=%u]\n",
- (unsigned int) h->ip_hl));
+ if (action == PF_NAT64) {
+ *pbufp = NULL;
+ return action;
}
- if ((s && s->tag) || PF_RTABLEID_IS_VALID(r->rtableid) ||
- (pd.pktflags & PKTF_FLOW_ID))
- (void) pf_tag_packet(m, pd.pf_mtag, s ? s->tag : 0,
- r->rtableid, &pd);
+ *pbufp = pd.mp;
+ PF_APPLE_UPDATE_PDESC_IPv4();
+
+ if (action != PF_DROP) {
+ if (action == PF_PASS && h->ip_hl > 5 &&
+ !((s && s->allow_opts) || r->allow_opts)) {
+ action = PF_DROP;
+ REASON_SET(&reason, PFRES_IPOPTIONS);
+ log = 1;
+ DPFPRINTF(PF_DEBUG_MISC,
+ ("pf: dropping packet with ip options [hlen=%u]\n",
+ (unsigned int) h->ip_hl));
+ }
- if (action == PF_PASS) {
-#if PF_ALTQ
- if (altq_allowed && r->qid) {
- if (pqid || (pd.tos & IPTOS_LOWDELAY))
- pd.pf_mtag->pftag_qid = r->pqid;
- else
- pd.pf_mtag->pftag_qid = r->qid;
+ if ((s && s->tag) || PF_RTABLEID_IS_VALID(r->rtableid) ||
+ (pd.pktflags & PKTF_FLOW_ID)) {
+ (void) pf_tag_packet(pbuf, pd.pf_mtag, s ? s->tag : 0,
+ r->rtableid, &pd);
}
-#endif /* PF_ALTQ */
+
+ if (action == PF_PASS) {
#if PF_ECN
- /* add hints for ecn */
- pd.pf_mtag->pftag_hdr = h;
- /* record address family */
- pd.pf_mtag->pftag_flags &= ~PF_TAG_HDR_INET6;
- pd.pf_mtag->pftag_flags |= PF_TAG_HDR_INET;
+ /* add hints for ecn */
+ pd.pf_mtag->pftag_hdr = h;
+ /* record address family */
+ pd.pf_mtag->pftag_flags &= ~PF_TAG_HDR_INET6;
+ pd.pf_mtag->pftag_flags |= PF_TAG_HDR_INET;
#endif /* PF_ECN */
- /* record protocol */
- m->m_pkthdr.pkt_proto = pd.proto;
- }
+ /* record protocol */
+ *pbuf->pb_proto = pd.proto;
- /*
- * connections redirected to loopback should not match sockets
- * bound specifically to loopback due to security implications,
- * see tcp_input() and in_pcblookup_listen().
- */
- if (dir == PF_IN && action == PF_PASS && (pd.proto == IPPROTO_TCP ||
- pd.proto == IPPROTO_UDP) && s != NULL && s->nat_rule.ptr != NULL &&
- (s->nat_rule.ptr->action == PF_RDR ||
- s->nat_rule.ptr->action == PF_BINAT) &&
- (ntohl(pd.dst->v4.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
- pd.pf_mtag->pftag_flags |= PF_TAG_TRANSLATE_LOCALHOST;
+ /*
+ * connections redirected to loopback should not match sockets
+ * bound specifically to loopback due to security implications,
+ * see tcp_input() and in_pcblookup_listen().
+ */
+ if (dir == PF_IN && (pd.proto == IPPROTO_TCP ||
+ pd.proto == IPPROTO_UDP) && s != NULL &&
+ s->nat_rule.ptr != NULL &&
+ (s->nat_rule.ptr->action == PF_RDR ||
+ s->nat_rule.ptr->action == PF_BINAT) &&
+ (ntohl(pd.dst->v4addr.s_addr) >> IN_CLASSA_NSHIFT)
+ == IN_LOOPBACKNET) {
+ pd.pf_mtag->pftag_flags |= PF_TAG_TRANSLATE_LOCALHOST;
+ }
+ }
+ }
if (log) {
struct pf_rule *lr;
if (s != NULL && s->nat_rule.ptr != NULL &&
- s->nat_rule.ptr->log & PF_LOG_ALL)
+ s->nat_rule.ptr->log & PF_LOG_ALL) {
lr = s->nat_rule.ptr;
- else
+ } else {
lr = r;
- PFLOG_PACKET(kif, h, m, AF_INET, dir, reason, lr, a, ruleset,
+ }
+ PFLOG_PACKET(kif, h, pbuf, AF_INET, dir, reason, lr, a, ruleset,
&pd);
}
tr = nr;
x = (sk == NULL || sk->direction == dir) ?
&pd.baddr : &pd.naddr;
- } else
+ } else {
x = (sk == NULL || sk->direction == dir) ?
&pd.naddr : &pd.baddr;
+ }
if (x == &pd.baddr || s == NULL) {
/* we need to change the address */
- if (dir == PF_OUT)
+ if (dir == PF_OUT) {
pd.src = x;
- else
+ } else {
pd.dst = x;
+ }
}
}
- if (tr->src.addr.type == PF_ADDR_TABLE)
+ if (tr->src.addr.type == PF_ADDR_TABLE) {
pfr_update_stats(tr->src.addr.p.tbl, (sk == NULL ||
sk->direction == dir) ?
pd.src : pd.dst, pd.af,
pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
tr->src.neg);
- if (tr->dst.addr.type == PF_ADDR_TABLE)
+ }
+ if (tr->dst.addr.type == PF_ADDR_TABLE) {
pfr_update_stats(tr->dst.addr.p.tbl, (sk == NULL ||
sk->direction == dir) ? pd.dst : pd.src, pd.af,
pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
tr->dst.neg);
+ }
}
- VERIFY(m == NULL || pd.mp == NULL || pd.mp == m);
+ VERIFY(pbuf == NULL || pd.mp == NULL || pd.mp == pbuf);
- if (*m0) {
+ if (*pbufp) {
if (pd.lmw < 0) {
REASON_SET(&reason, PFRES_MEMORY);
action = PF_DROP;
}
if (action == PF_DROP) {
- m_freem(*m0);
- *m0 = NULL;
- return (PF_DROP);
+ pbuf_destroy(*pbufp);
+ *pbufp = NULL;
+ return PF_DROP;
}
- *m0 = m;
+ *pbufp = pbuf;
}
if (action == PF_SYNPROXY_DROP) {
- m_freem(*m0);
- *m0 = NULL;
+ pbuf_destroy(*pbufp);
+ *pbufp = NULL;
action = PF_PASS;
- } else if (r->rt)
- /* pf_route can free the mbuf causing *m0 to become NULL */
- pf_route(m0, r, dir, kif->pfik_ifp, s, &pd);
+ } else if (r->rt) {
+ /* pf_route can free the pbuf causing *pbufp to become NULL */
+ pf_route(pbufp, r, dir, kif->pfik_ifp, s, &pd);
+ }
- return (action);
+ return action;
}
#endif /* INET */
#if INET6
-#define PF_APPLE_UPDATE_PDESC_IPv6() \
- do { \
- if (m && pd.mp && m != pd.mp) { \
- if (n == m) \
- n = pd.mp; \
- m = pd.mp; \
- h = mtod(m, struct ip6_hdr *); \
- } \
+#define PF_APPLE_UPDATE_PDESC_IPv6() \
+ do { \
+ if (pbuf && pd.mp && pbuf != pd.mp) { \
+ pbuf = pd.mp; \
+ } \
+ h = pbuf->pb_data; \
} while (0)
int
-pf_test6(int dir, struct ifnet *ifp, struct mbuf **m0,
+pf_test6_mbuf(int dir, struct ifnet *ifp, struct mbuf **m0,
+ struct ether_header *eh, struct ip_fw_args *fwa)
+{
+ pbuf_t pbuf_store, *pbuf;
+ int rv;
+
+ pbuf_init_mbuf(&pbuf_store, *m0, (*m0)->m_pkthdr.rcvif);
+ pbuf = &pbuf_store;
+
+ rv = pf_test6(dir, ifp, &pbuf, eh, fwa);
+
+ if (pbuf_is_valid(pbuf)) {
+ *m0 = pbuf->pb_mbuf;
+ pbuf->pb_mbuf = NULL;
+ pbuf_destroy(pbuf);
+ } else {
+ *m0 = NULL;
+ }
+
+ return rv;
+}
+
+int
+pf_test6(int dir, struct ifnet *ifp, pbuf_t **pbufp,
struct ether_header *eh, struct ip_fw_args *fwa)
{
#if !DUMMYNET
#pragma unused(fwa)
#endif
- struct pfi_kif *kif;
- u_short action = PF_PASS, reason = 0, log = 0;
- struct mbuf *m = *m0, *n = NULL;
- struct ip6_hdr *h;
- struct pf_rule *a = NULL, *r = &pf_default_rule, *tr, *nr;
- struct pf_state *s = NULL;
- struct pf_state_key *sk = NULL;
- struct pf_ruleset *ruleset = NULL;
- struct pf_pdesc pd;
- int off, terminal = 0, dirndx, rh_cnt = 0;
- u_int8_t nxt;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if (!pf_status.running)
- return (PF_PASS);
-
- memset(&pd, 0, sizeof (pd));
-
- if ((pd.pf_mtag = pf_get_mtag(m)) == NULL) {
+ struct pfi_kif *kif;
+ u_short action = PF_PASS, reason = 0, log = 0;
+ pbuf_t *pbuf = *pbufp;
+ struct ip6_hdr *h;
+ struct pf_rule *a = NULL, *r = &pf_default_rule, *tr, *nr;
+ struct pf_state *s = NULL;
+ struct pf_state_key *sk = NULL;
+ struct pf_ruleset *ruleset = NULL;
+ struct pf_pdesc pd;
+ int off, terminal = 0, dirndx, rh_cnt = 0;
+ u_int8_t nxt;
+
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ if (!pf_status.running) {
+ return PF_PASS;
+ }
+
+ memset(&pd, 0, sizeof(pd));
+
+ if ((pd.pf_mtag = pf_get_mtag_pbuf(pbuf)) == NULL) {
DPFPRINTF(PF_DEBUG_URGENT,
- ("pf_test6: pf_get_mtag returned NULL\n"));
- return (PF_DROP);
+ ("pf_test6: pf_get_mtag_pbuf returned NULL\n"));
+ return PF_DROP;
}
- if (pd.pf_mtag->pftag_flags & PF_TAG_GENERATED)
- return (PF_PASS);
+ if (pd.pf_mtag->pftag_flags & PF_TAG_GENERATED) {
+ return PF_PASS;
+ }
kif = (struct pfi_kif *)ifp->if_pf_kif;
if (kif == NULL) {
DPFPRINTF(PF_DEBUG_URGENT,
("pf_test6: kif == NULL, if_name %s\n", ifp->if_name));
- return (PF_DROP);
+ return PF_DROP;
+ }
+ if (kif->pfik_flags & PFI_IFLAG_SKIP) {
+ return PF_PASS;
}
- if (kif->pfik_flags & PFI_IFLAG_SKIP)
- return (PF_PASS);
-
- VERIFY(m->m_flags & M_PKTHDR);
- h = mtod(m, struct ip6_hdr *);
+ h = pbuf->pb_data;
nxt = h->ip6_nxt;
- off = ((caddr_t)h - m->m_data) + sizeof(struct ip6_hdr);
- pd.mp = m;
+ off = ((caddr_t)h - (caddr_t)pbuf->pb_data) + sizeof(struct ip6_hdr);
+ pd.mp = pbuf;
pd.lmw = 0;
- pd.pf_mtag = pf_get_mtag(m);
- pd.src = (struct pf_addr *)&h->ip6_src;
- pd.dst = (struct pf_addr *)&h->ip6_dst;
- PF_ACPY(&pd.baddr, dir == PF_OUT ? pd.src : pd.dst, AF_INET6);
+ pd.pf_mtag = pf_get_mtag_pbuf(pbuf);
+ pd.src = (struct pf_addr *)(uintptr_t)&h->ip6_src;
+ pd.dst = (struct pf_addr *)(uintptr_t)&h->ip6_dst;
+ PF_ACPY(&pd.baddr, pd.src, AF_INET6);
+ PF_ACPY(&pd.bdaddr, pd.dst, AF_INET6);
pd.ip_sum = NULL;
pd.af = AF_INET6;
pd.proto = nxt;
pd.proto_variant = 0;
pd.tos = 0;
- pd.sc = MBUF_SCIDX(mbuf_get_service_class(m));
+ pd.ttl = h->ip6_hlim;
+ pd.sc = MBUF_SCIDX(pbuf_get_service_class(pbuf));
pd.tot_len = ntohs(h->ip6_plen) + sizeof(struct ip6_hdr);
pd.eh = eh;
- if (m->m_pkthdr.pkt_flags & PKTF_FLOW_ID) {
- pd.flowsrc = m->m_pkthdr.pkt_flowsrc;
- pd.flowhash = m->m_pkthdr.pkt_flowid;
- pd.pktflags = (m->m_pkthdr.pkt_flags & PKTF_FLOW_MASK);
+ if (*pbuf->pb_flags & PKTF_FLOW_ID) {
+ pd.flowsrc = *pbuf->pb_flowsrc;
+ pd.flowhash = *pbuf->pb_flowid;
+ pd.pktflags = (*pbuf->pb_flags & PKTF_FLOW_MASK);
}
- if (m->m_pkthdr.len < (int)sizeof (*h)) {
+ if (pbuf->pb_packet_len < (int)sizeof(*h)) {
action = PF_DROP;
REASON_SET(&reason, PFRES_SHORT);
log = 1;
}
#if DUMMYNET
- if (fwa != NULL && fwa->fwa_pf_rule != NULL)
+ if (fwa != NULL && fwa->fwa_pf_rule != NULL) {
goto nonormalize;
+ }
#endif /* DUMMYNET */
/* We do IP header normalization and packet reassembly here */
- action = pf_normalize_ip6(m0, dir, kif, &reason, &pd);
- pd.mp = m = *m0;
+ action = pf_normalize_ip6(pbuf, dir, kif, &reason, &pd);
if (action != PF_PASS || pd.lmw < 0) {
action = PF_DROP;
goto done;
#if DUMMYNET
nonormalize:
#endif /* DUMMYNET */
- h = mtod(m, struct ip6_hdr *);
+ h = pbuf->pb_data;
#if 1
/*
*/
if (htons(h->ip6_plen) == 0) {
action = PF_DROP;
- REASON_SET(&reason, PFRES_NORM); /*XXX*/
+ REASON_SET(&reason, PFRES_NORM); /*XXX*/
goto done;
}
#endif
- pd.src = (struct pf_addr *)&h->ip6_src;
- pd.dst = (struct pf_addr *)&h->ip6_dst;
- PF_ACPY(&pd.baddr, dir == PF_OUT ? pd.src : pd.dst, AF_INET6);
+ pd.src = (struct pf_addr *)(uintptr_t)&h->ip6_src;
+ pd.dst = (struct pf_addr *)(uintptr_t)&h->ip6_dst;
+ PF_ACPY(&pd.baddr, pd.src, AF_INET6);
+ PF_ACPY(&pd.bdaddr, pd.dst, AF_INET6);
pd.ip_sum = NULL;
pd.af = AF_INET6;
pd.tos = 0;
- pd.tot_len = ntohs(h->ip6_plen) + sizeof (struct ip6_hdr);
+ pd.ttl = h->ip6_hlim;
+ pd.tot_len = ntohs(h->ip6_plen) + sizeof(struct ip6_hdr);
pd.eh = eh;
- off = ((caddr_t)h - m->m_data) + sizeof (struct ip6_hdr);
+ off = ((caddr_t)h - (caddr_t)pbuf->pb_data) + sizeof(struct ip6_hdr);
pd.proto = h->ip6_nxt;
pd.proto_variant = 0;
- pd.mp = m;
+ pd.mp = pbuf;
pd.lmw = 0;
- pd.pf_mtag = pf_get_mtag(m);
+ pd.pf_mtag = pf_get_mtag_pbuf(pbuf);
do {
switch (nxt) {
struct ip6_frag ip6f;
pd.flags |= PFDESC_IP_FRAG;
- if (!pf_pull_hdr(m, off, &ip6f, sizeof ip6f, NULL,
+ if (!pf_pull_hdr(pbuf, off, &ip6f, sizeof ip6f, NULL,
&reason, pd.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: IPv6 short fragment header\n"));
pd.proto = nxt = ip6f.ip6f_nxt;
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd,
+ fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
- action = pf_test_fragment(&r, dir, kif, m, h, &pd, &a,
- &ruleset);
+ action = pf_test_fragment(&r, dir, kif, pbuf, h, &pd,
+ &a, &ruleset);
if (action == PF_DROP) {
REASON_SET(&reason, PFRES_FRAG);
log = 1;
}
case IPPROTO_ROUTING:
++rh_cnt;
- /* FALL THROUGH */
+ /* FALL THROUGH */
case IPPROTO_AH:
case IPPROTO_HOPOPTS:
case IPPROTO_DSTOPTS: {
/* get next header and header length */
- struct ip6_ext opt6;
+ struct ip6_ext opt6;
- if (!pf_pull_hdr(m, off, &opt6, sizeof(opt6),
+ if (!pf_pull_hdr(pbuf, off, &opt6, sizeof(opt6),
NULL, &reason, pd.af)) {
DPFPRINTF(PF_DEBUG_MISC,
("pf: IPv6 short opt\n"));
log = 1;
goto done;
}
- if (pd.proto == IPPROTO_AH)
+ if (pd.proto == IPPROTO_AH) {
off += (opt6.ip6e_len + 2) * 4;
- else
+ } else {
off += (opt6.ip6e_len + 1) * 8;
+ }
nxt = opt6.ip6e_nxt;
/* goto the next header */
break;
}
} while (!terminal);
- /* if there's no routing header, use unmodified mbuf for checksumming */
- if (!n)
- n = m;
switch (pd.proto) {
-
case IPPROTO_TCP: {
- struct tcphdr th;
+ struct tcphdr th;
pd.hdr.tcp = &th;
- if (!pf_pull_hdr(m, off, &th, sizeof (th),
+ if (!pf_pull_hdr(pbuf, off, &th, sizeof(th),
&action, &reason, AF_INET6)) {
log = action != PF_PASS;
goto done;
pd.p_len = pd.tot_len - off - (th.th_off << 2);
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
- action = pf_normalize_tcp(dir, kif, m, 0, off, h, &pd);
- if (pd.lmw < 0)
+ action = pf_normalize_tcp(dir, kif, pbuf, 0, off, h, &pd);
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv6();
- if (action == PF_DROP)
+ if (action == PF_DROP) {
goto done;
- action = pf_test_state_tcp(&s, dir, kif, m, off, h, &pd,
+ }
+ action = pf_test_state_tcp(&s, dir, kif, pbuf, off, h, &pd,
&reason);
- if (pd.lmw < 0)
+ if (action == PF_NAT64) {
+ goto done;
+ }
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv6();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
+ } else if (s == NULL) {
action = pf_test_rule(&r, &s, dir, kif,
- m, off, h, &pd, &a, &ruleset, NULL);
+ pbuf, off, h, &pd, &a, &ruleset, NULL);
+ }
break;
}
case IPPROTO_UDP: {
- struct udphdr uh;
+ struct udphdr uh;
pd.hdr.udp = &uh;
- if (!pf_pull_hdr(m, off, &uh, sizeof (uh),
+ if (!pf_pull_hdr(pbuf, off, &uh, sizeof(uh),
&action, &reason, AF_INET6)) {
log = action != PF_PASS;
goto done;
}
if (uh.uh_dport == 0 ||
- ntohs(uh.uh_ulen) > m->m_pkthdr.len - off ||
- ntohs(uh.uh_ulen) < sizeof (struct udphdr)) {
+ ntohs(uh.uh_ulen) > pbuf->pb_packet_len - off ||
+ ntohs(uh.uh_ulen) < sizeof(struct udphdr)) {
action = PF_DROP;
REASON_SET(&reason, PFRES_SHORT);
goto done;
}
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
- action = pf_test_state_udp(&s, dir, kif, m, off, h, &pd,
+ action = pf_test_state_udp(&s, dir, kif, pbuf, off, h, &pd,
&reason);
- if (pd.lmw < 0)
+ if (action == PF_NAT64) {
goto done;
+ }
+ if (pd.lmw < 0) {
+ goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv6();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
+ } else if (s == NULL) {
action = pf_test_rule(&r, &s, dir, kif,
- m, off, h, &pd, &a, &ruleset, NULL);
+ pbuf, off, h, &pd, &a, &ruleset, NULL);
+ }
break;
}
case IPPROTO_ICMPV6: {
- struct icmp6_hdr ih;
+ struct icmp6_hdr ih;
pd.hdr.icmp6 = &ih;
- if (!pf_pull_hdr(m, off, &ih, sizeof (ih),
+ if (!pf_pull_hdr(pbuf, off, &ih, sizeof(ih),
&action, &reason, AF_INET6)) {
log = action != PF_PASS;
goto done;
}
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
action = pf_test_state_icmp(&s, dir, kif,
- m, off, h, &pd, &reason);
- if (pd.lmw < 0)
+ pbuf, off, h, &pd, &reason);
+ if (action == PF_NAT64) {
+ goto done;
+ }
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv6();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
+ } else if (s == NULL) {
action = pf_test_rule(&r, &s, dir, kif,
- m, off, h, &pd, &a, &ruleset, NULL);
+ pbuf, off, h, &pd, &a, &ruleset, NULL);
+ }
break;
}
case IPPROTO_ESP: {
- struct pf_esp_hdr esp;
+ struct pf_esp_hdr esp;
pd.hdr.esp = &esp;
- if (!pf_pull_hdr(m, off, &esp, sizeof (esp), &action, &reason,
- AF_INET6)) {
+ if (!pf_pull_hdr(pbuf, off, &esp, sizeof(esp), &action,
+ &reason, AF_INET6)) {
log = action != PF_PASS;
goto done;
}
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
action = pf_test_state_esp(&s, dir, kif, off, &pd);
- if (pd.lmw < 0)
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv6();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
+ } else if (s == NULL) {
action = pf_test_rule(&r, &s, dir, kif,
- m, off, h, &pd, &a, &ruleset, NULL);
+ pbuf, off, h, &pd, &a, &ruleset, NULL);
+ }
break;
}
case IPPROTO_GRE: {
- struct pf_grev1_hdr grev1;
+ struct pf_grev1_hdr grev1;
pd.hdr.grev1 = &grev1;
- if (!pf_pull_hdr(m, off, &grev1, sizeof (grev1), &action,
+ if (!pf_pull_hdr(pbuf, off, &grev1, sizeof(grev1), &action,
&reason, AF_INET6)) {
log = (action != PF_PASS);
goto done;
}
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
if ((ntohs(grev1.flags) & PF_GRE_FLAG_VERSION_MASK) == 1 &&
ntohs(grev1.protocol_type) == PF_GRE_PPP_ETHERTYPE) {
if (ntohs(grev1.payload_length) >
- m->m_pkthdr.len - off) {
+ pbuf->pb_packet_len - off) {
action = PF_DROP;
REASON_SET(&reason, PFRES_SHORT);
goto done;
}
action = pf_test_state_grev1(&s, dir, kif, off, &pd);
- if (pd.lmw < 0)
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv6();
if (action == PF_PASS) {
#if NPFSYNC
log = s->log;
break;
} else if (s == NULL) {
- action = pf_test_rule(&r, &s, dir, kif, m, off,
- h, &pd, &a, &ruleset, NULL);
- if (action == PF_PASS)
+ action = pf_test_rule(&r, &s, dir, kif, pbuf,
+ off, h, &pd, &a, &ruleset, NULL);
+ if (action == PF_PASS) {
break;
+ }
}
}
default:
#if DUMMYNET
/* Traffic goes through dummynet first */
- action = pf_test_dummynet(&r, dir, kif, &m, &pd, fwa);
- if (action == PF_DROP || m == NULL) {
- *m0 = NULL;
- return (action);
+ action = pf_test_dummynet(&r, dir, kif, &pbuf, &pd, fwa);
+ if (action == PF_DROP || pbuf == NULL) {
+ *pbufp = NULL;
+ return action;
}
#endif /* DUMMYNET */
action = pf_test_state_other(&s, dir, kif, &pd);
- if (pd.lmw < 0)
+ if (pd.lmw < 0) {
goto done;
+ }
PF_APPLE_UPDATE_PDESC_IPv6();
if (action == PF_PASS) {
#if NPFSYNC
r = s->rule.ptr;
a = s->anchor.ptr;
log = s->log;
- } else if (s == NULL)
- action = pf_test_rule(&r, &s, dir, kif, m, off, h,
+ } else if (s == NULL) {
+ action = pf_test_rule(&r, &s, dir, kif, pbuf, off, h,
&pd, &a, &ruleset, NULL);
+ }
break;
}
done:
- *m0 = pd.mp;
- PF_APPLE_UPDATE_PDESC_IPv6();
-
- if (n != m) {
- m_freem(n);
- n = NULL;
+ if (action == PF_NAT64) {
+ *pbufp = NULL;
+ return action;
}
- /* handle dangerous IPv6 extension headers. */
- if (action == PF_PASS && rh_cnt &&
- !((s && s->allow_opts) || r->allow_opts)) {
- action = PF_DROP;
- REASON_SET(&reason, PFRES_IPOPTIONS);
- log = 1;
- DPFPRINTF(PF_DEBUG_MISC,
- ("pf: dropping packet with dangerous v6 headers\n"));
- }
+ *pbufp = pd.mp;
+ PF_APPLE_UPDATE_PDESC_IPv6();
- if ((s && s->tag) || PF_RTABLEID_IS_VALID(r->rtableid) ||
- (pd.pktflags & PKTF_FLOW_ID))
- (void) pf_tag_packet(m, pd.pf_mtag, s ? s->tag : 0,
- r->rtableid, &pd);
+ /* handle dangerous IPv6 extension headers. */
+ if (action != PF_DROP) {
+ if (action == PF_PASS && rh_cnt &&
+ !((s && s->allow_opts) || r->allow_opts)) {
+ action = PF_DROP;
+ REASON_SET(&reason, PFRES_IPOPTIONS);
+ log = 1;
+ DPFPRINTF(PF_DEBUG_MISC,
+ ("pf: dropping packet with dangerous v6addr headers\n"));
+ }
- if (action == PF_PASS) {
-#if PF_ALTQ
- if (altq_allowed && r->qid) {
- if (pd.tos & IPTOS_LOWDELAY)
- pd.pf_mtag->pftag_qid = r->pqid;
- else
- pd.pf_mtag->pftag_qid = r->qid;
+ if ((s && s->tag) || PF_RTABLEID_IS_VALID(r->rtableid) ||
+ (pd.pktflags & PKTF_FLOW_ID)) {
+ (void) pf_tag_packet(pbuf, pd.pf_mtag, s ? s->tag : 0,
+ r->rtableid, &pd);
}
-#endif /* PF_ALTQ */
+
+ if (action == PF_PASS) {
#if PF_ECN
- /* add hints for ecn */
- pd.pf_mtag->pftag_hdr = h;
- /* record address family */
- pd.pf_mtag->pftag_flags &= ~PF_TAG_HDR_INET;
- pd.pf_mtag->pftag_flags |= PF_TAG_HDR_INET6;
+ /* add hints for ecn */
+ pd.pf_mtag->pftag_hdr = h;
+ /* record address family */
+ pd.pf_mtag->pftag_flags &= ~PF_TAG_HDR_INET;
+ pd.pf_mtag->pftag_flags |= PF_TAG_HDR_INET6;
#endif /* PF_ECN */
- /* record protocol */
- m->m_pkthdr.pkt_proto = pd.proto;
+ /* record protocol */
+ *pbuf->pb_proto = pd.proto;
+ if (dir == PF_IN && (pd.proto == IPPROTO_TCP ||
+ pd.proto == IPPROTO_UDP) && s != NULL &&
+ s->nat_rule.ptr != NULL &&
+ (s->nat_rule.ptr->action == PF_RDR ||
+ s->nat_rule.ptr->action == PF_BINAT) &&
+ IN6_IS_ADDR_LOOPBACK(&pd.dst->v6addr)) {
+ pd.pf_mtag->pftag_flags |= PF_TAG_TRANSLATE_LOCALHOST;
+ }
+ }
}
- if (dir == PF_IN && action == PF_PASS && (pd.proto == IPPROTO_TCP ||
- pd.proto == IPPROTO_UDP) && s != NULL && s->nat_rule.ptr != NULL &&
- (s->nat_rule.ptr->action == PF_RDR ||
- s->nat_rule.ptr->action == PF_BINAT) &&
- IN6_IS_ADDR_LOOPBACK(&pd.dst->v6))
- pd.pf_mtag->pftag_flags |= PF_TAG_TRANSLATE_LOCALHOST;
if (log) {
struct pf_rule *lr;
if (s != NULL && s->nat_rule.ptr != NULL &&
- s->nat_rule.ptr->log & PF_LOG_ALL)
+ s->nat_rule.ptr->log & PF_LOG_ALL) {
lr = s->nat_rule.ptr;
- else
+ } else {
lr = r;
- PFLOG_PACKET(kif, h, m, AF_INET6, dir, reason, lr, a, ruleset,
+ }
+ PFLOG_PACKET(kif, h, pbuf, AF_INET6, dir, reason, lr, a, ruleset,
&pd);
}
&pd.naddr : &pd.baddr;
}
if (x == &pd.baddr || s == NULL) {
- if (dir == PF_OUT)
+ if (dir == PF_OUT) {
pd.src = x;
- else
+ } else {
pd.dst = x;
+ }
}
}
- if (tr->src.addr.type == PF_ADDR_TABLE)
+ if (tr->src.addr.type == PF_ADDR_TABLE) {
pfr_update_stats(tr->src.addr.p.tbl, (sk == NULL ||
sk->direction == dir) ? pd.src : pd.dst, pd.af,
pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
tr->src.neg);
- if (tr->dst.addr.type == PF_ADDR_TABLE)
+ }
+ if (tr->dst.addr.type == PF_ADDR_TABLE) {
pfr_update_stats(tr->dst.addr.p.tbl, (sk == NULL ||
sk->direction == dir) ? pd.dst : pd.src, pd.af,
pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
tr->dst.neg);
+ }
}
#if 0
m_freem(*m0);
*m0 = NULL;
action = PF_PASS;
- } else if (r->rt)
+ } else if (r->rt) {
/* pf_route6 can free the mbuf causing *m0 to become NULL */
pf_route6(m0, r, dir, kif->pfik_ifp, s, &pd);
+ }
#else
- VERIFY(m == NULL || pd.mp == NULL || pd.mp == m);
+ VERIFY(pbuf == NULL || pd.mp == NULL || pd.mp == pbuf);
- if (*m0) {
+ if (*pbufp) {
if (pd.lmw < 0) {
REASON_SET(&reason, PFRES_MEMORY);
action = PF_DROP;
}
if (action == PF_DROP) {
- m_freem(*m0);
- *m0 = NULL;
- return (PF_DROP);
+ pbuf_destroy(*pbufp);
+ *pbufp = NULL;
+ return PF_DROP;
}
- *m0 = m;
+ *pbufp = pbuf;
}
if (action == PF_SYNPROXY_DROP) {
- m_freem(*m0);
- *m0 = NULL;
+ pbuf_destroy(*pbufp);
+ *pbufp = NULL;
action = PF_PASS;
} else if (r->rt) {
- if (action == PF_PASS) {
- m = *m0;
- h = mtod(m, struct ip6_hdr *);
- }
-
/* pf_route6 can free the mbuf causing *m0 to become NULL */
- pf_route6(m0, r, dir, kif->pfik_ifp, s, &pd);
+ pf_route6(pbufp, r, dir, kif->pfik_ifp, s, &pd);
}
#endif /* 0 */
- return (action);
+ return action;
}
#endif /* INET6 */
pf_check_congestion(struct ifqueue *ifq)
{
#pragma unused(ifq)
- return (0);
+ return 0;
}
void
int flags, const char *wchan, void *palloc)
{
#pragma unused(align, ioff, flags, palloc)
- bzero(pp, sizeof (*pp));
+ bzero(pp, sizeof(*pp));
pp->pool_zone = zinit(size, 1024 * size, PAGE_SIZE, wchan);
if (pp->pool_zone != NULL) {
zone_change(pp->pool_zone, Z_EXPAND, TRUE);
void
pool_sethiwat(struct pool *pp, int n)
{
- pp->pool_hiwat = n; /* Currently unused */
+ pp->pool_hiwat = n; /* Currently unused */
}
void
{
void *buf;
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
if (pp->pool_count > pp->pool_limit) {
DPFPRINTF(PF_DEBUG_NOISY,
pp->pool_name != NULL ? pp->pool_name : "unknown",
pp->pool_limit));
pp->pool_fails++;
- return (NULL);
+ return NULL;
}
buf = zalloc_canblock(pp->pool_zone, (flags & (PR_NOWAIT | PR_WAITOK)));
pp->pool_count++;
VERIFY(pp->pool_count != 0);
}
- return (buf);
+ return buf;
}
void
pool_put(struct pool *pp, void *v)
{
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
zfree(pp->pool_zone, v);
VERIFY(pp->pool_count != 0);
}
struct pf_mtag *
-pf_find_mtag(struct mbuf *m)
+pf_find_mtag_pbuf(pbuf_t *pbuf)
{
- if (!(m->m_flags & M_PKTHDR))
- return (NULL);
+ return pbuf->pb_pftag;
+}
- return (m_pftag(m));
+struct pf_mtag *
+pf_find_mtag(struct mbuf *m)
+{
+ return m_pftag(m);
}
struct pf_mtag *
pf_get_mtag(struct mbuf *m)
{
- return (pf_find_mtag(m));
+ return pf_find_mtag(m);
+}
+
+struct pf_mtag *
+pf_get_mtag_pbuf(pbuf_t *pbuf)
+{
+ return pf_find_mtag_pbuf(pbuf);
}
uint64_t
struct timeval t;
microuptime(&t);
- return (t.tv_sec);
+ return t.tv_sec;
}
uint64_t
struct timeval t;
getmicrotime(&t);
- return (t.tv_sec);
+ return t.tv_sec;
}
static void *
struct hook_desc *hd;
hd = _MALLOC(sizeof(*hd), M_DEVBUF, M_WAITOK);
- if (hd == NULL)
- return (NULL);
+ if (hd == NULL) {
+ return NULL;
+ }
hd->hd_fn = fn;
hd->hd_arg = arg;
- if (tail)
+ if (tail) {
TAILQ_INSERT_TAIL(head, hd, hd_list);
- else
+ } else {
TAILQ_INSERT_HEAD(head, hd, hd_list);
+ }
- return (hd);
+ return hd;
}
static void
struct hook_desc *hd;
if (!(flags & HOOK_REMOVE)) {
- if (!(flags & HOOK_ABORT))
+ if (!(flags & HOOK_ABORT)) {
TAILQ_FOREACH(hd, head, hd_list)
- hd->hd_fn(hd->hd_arg);
+ hd->hd_fn(hd->hd_arg);
+ }
} else {
while (!!(hd = TAILQ_FIRST(head))) {
TAILQ_REMOVE(head, hd, hd_list);
- if (!(flags & HOOK_ABORT))
+ if (!(flags & HOOK_ABORT)) {
hd->hd_fn(hd->hd_arg);
- if (flags & HOOK_FREE)
+ }
+ if (flags & HOOK_FREE) {
_FREE(hd, M_DEVBUF);
+ }
}
}
}
projects / apple / xnu.git / blobdiff