/*
- * Copyright (c) 2007-2013 Apple Inc. All rights reserved.
+ * Copyright (c) 2007-2015 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
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);
+ struct pf_addr *, u_int16_t, u_int8_t, sa_family_t,
+ sa_family_t, int);
static int pf_modulate_sack(struct mbuf *, 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);
+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,
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 *);
+ 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_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 *);
+ struct pf_addr *, sa_family_t af);
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 *,
#define STATE_ADDR_TRANSLATE(sk) \
(sk)->lan.addr.addr32[0] != (sk)->gwy.addr.addr32[0] || \
- ((sk)->af == AF_INET6 && \
+ ((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) || \
+ ((sk)->af_lan != (sk)->af_gwy || \
+ STATE_ADDR_TRANSLATE(sk) || \
(sk)->lan.xport.port != (sk)->gwy.xport.port)
#define STATE_GRE_TRANSLATE(sk) \
};
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])
+ if (a->addr32[0] > b->addr32[0])
return (1);
- if (a->addr.addr32[0] < b->addr.addr32[0])
+ 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])
+ if (a->addr32[3] > b->addr32[3])
return (1);
- if (a->addr.addr32[3] < b->addr.addr32[3])
+ if (a->addr32[3] < b->addr32[3])
return (-1);
- if (a->addr.addr32[2] > b->addr.addr32[2])
+ if (a->addr32[2] > b->addr32[2])
return (1);
- if (a->addr.addr32[2] < b->addr.addr32[2])
+ if (a->addr32[2] < b->addr32[2])
return (-1);
- if (a->addr.addr32[1] > b->addr.addr32[1])
+ if (a->addr32[1] > b->addr32[1])
return (1);
- if (a->addr.addr32[1] < b->addr.addr32[1])
+ if (a->addr32[1] < b->addr32[1])
return (-1);
- if (a->addr.addr32[0] > b->addr.addr32[0])
+ if (a->addr32[0] > b->addr32[0])
return (1);
- if (a->addr.addr32[0] < b->addr.addr32[0])
+ if (a->addr32[0] < b->addr32[0])
return (-1);
break;
#endif /* INET6 */
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)
{
if ((diff = a->proto - b->proto) != 0)
return (diff);
- if ((diff = a->af - b->af) != 0)
+ if ((diff = a->af_lan - b->af_lan) != 0)
return (diff);
extfilter = PF_EXTFILTER_APD;
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)
+ if ((diff = a->ext_lan.xport.port - b->ext_lan.xport.port) != 0)
return (diff);
break;
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)
+ (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))
+ 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))
+ if (!!(diff = a->ext_lan.xport.spi - b->ext_lan.xport.spi))
return (diff);
break;
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 */
if ((diff = a->proto - b->proto) != 0)
return (diff);
- if ((diff = a->af - b->af) != 0)
+ if ((diff = a->af_gwy - b->af_gwy) != 0)
return (diff);
extfilter = PF_EXTFILTER_APD;
break;
case IPPROTO_TCP:
- if ((diff = a->ext.xport.port - b->ext.xport.port) != 0)
+ 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);
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)
+ (diff = a->ext_gwy.xport.port - b->ext_gwy.xport.port) != 0)
return (diff);
break;
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 */
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");
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");
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;
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) {
+ p.pfra_af = (*state)->state_key->af_lan;
+ switch ((*state)->state_key->af_lan) {
#if INET
case AF_INET:
p.pfra_net = 32;
* 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_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)) {
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)
printf(" (from sync)");
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);
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)
uint32_t flowhash = 0;
bzero(&fh, sizeof (fh));
- if (PF_ALEQ(&sk->lan.addr, &sk->ext.addr, sk->af)) {
+ 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.addr, &fh.ap2.addr, sizeof (fh.ap2.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->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:
return (l);
}
+/*
+ * 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,
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;
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;
+ 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.
+ * 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 && m != NULL &&
- (m->m_flags & M_PKTHDR) &&
- (m->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))) {
+ 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,
+ *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:
+ 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 && m != NULL &&
- (m->m_flags & M_PKTHDR) &&
- (m->m_pkthdr.csum_flags & (CSUM_TCPIPV6 | CSUM_UDPIPV6))) {
+ 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 {
+ *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 */
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->v4.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
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);
if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
if (rpool->cur->addr.p.dyn == NULL)
return (1);
- switch (af) {
+ switch (rpool->af) {
#if INET
case AF_INET:
if (rpool->cur->addr.p.dyn->pfid_acnt4 < 1 &&
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:
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 &&
&rpool->tblidx, &rpool->counter,
&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:
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' */
+ &raddr, &rmask, rpool->af)) {
+ /* table contains no address of type
+ * 'rpool->af' */
if (rpool->cur != acur)
goto try_next;
return (1);
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' */
+ &raddr, &rmask, rpool->af)) {
+ /* table contains no address of type
+ * 'rpool->af' */
if (rpool->cur != acur)
goto try_next;
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);
+ 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);
+ 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");
}
continue;
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)
continue;
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;
continue;
if (s->nat_rule.ptr != r)
continue;
- if (sk->proto != IPPROTO_TCP || sk->af != af)
+ if (sk->proto != IPPROTO_TCP || sk->af_lan != af)
continue;
if (sk->lan.xport.port != sxport->port)
continue;
}
}
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;
}
if (dxport)
- key.ext.xport = *dxport;
+ key.ext_gwy.xport = *dxport;
else
- memset(&key.ext.xport, 0, sizeof (key.ext.xport));
+ memset(&key.ext_gwy.xport, 0,
+ sizeof (key.ext_gwy.xport));
/*
* port search; start random, step;
* similar 2 portloop in in_pcbbind
key.gwy.xport = *dxport;
else
memset(&key.gwy.xport, 0,
- sizeof (key.ext.xport));
+ sizeof (key.gwy.xport));
if (pf_find_state_all(&key, PF_IN, NULL) == NULL)
return (0);
} else if (low == 0 && high == 0) {
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))
+ 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
+ * m : mbuf 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,
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;
+ pd->naf = pd->af;
if (direction == PF_OUT) {
r = pf_match_translation(pd, m, off, direction, kif, saddr,
}
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);
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[1]));
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->v4.s_addr = daddr->addr32[3];
+ pd->naf = AF_INET;
+ }
break;
case PF_BINAT:
switch (direction) {
if (r->rpool.cur->addr.p.dyn->
pfid_acnt4 < 1)
return (NULL);
- PF_POOLMASK(naddr,
+ PF_POOLMASK(nsaddr,
&r->rpool.cur->addr.p.dyn->
pfid_addr4,
&r->rpool.cur->addr.p.dyn->
if (r->rpool.cur->addr.p.dyn->
pfid_acnt6 < 1)
return (NULL);
- PF_POOLMASK(naddr,
+ 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);
if (r->src.addr.p.dyn->
pfid_acnt4 < 1)
return (NULL);
- PF_POOLMASK(naddr,
+ PF_POOLMASK(ndaddr,
&r->src.addr.p.dyn->
pfid_addr4,
&r->src.addr.p.dyn->
if (r->src.addr.p.dyn->
pfid_acnt6 < 1)
return (NULL);
- PF_POOLMASK(naddr,
+ PF_POOLMASK(ndaddr,
&r->src.addr.p.dyn->
pfid_addr6,
&r->src.addr.p.dyn->
#endif /* INET6 */
}
} else
- PF_POOLMASK(naddr,
+ PF_POOLMASK(ndaddr,
&r->src.addr.v.a.addr,
&r->src.addr.v.a.mask, daddr,
pd->af);
if (r->dst.addr.p.dyn->
pfid_acnt4 < 1)
return (NULL);
- PF_POOLMASK(naddr,
+ PF_POOLMASK(nsaddr,
&r->dst.addr.p.dyn->
pfid_addr4,
&r->dst.addr.p.dyn->
if (r->dst.addr.p.dyn->
pfid_acnt6 < 1)
return (NULL);
- PF_POOLMASK(naddr,
+ 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))
+ ndaddr, NULL, sn))
return (NULL);
if ((r->rpool.opts & PF_POOL_TYPEMASK) ==
PF_POOL_BITMASK)
- PF_POOLMASK(naddr, naddr,
+ 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;
/* wrap around if necessary */
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]);
}
}
}
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)
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
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->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;
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(v4/6) error
+ * response.
+ */
+static int
+pf_change_icmp_af(struct mbuf *m, 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)
+{
+ struct mbuf *n = NULL;
+ struct ip *ip4 = NULL;
+ struct ip6_hdr *ip6 = NULL;
+ int hlen, olen, mlen;
+
+ if (af == naf || (af != AF_INET && af != AF_INET6) ||
+ (naf != AF_INET && naf != AF_INET6))
+ return (-1);
+
+ /* split the mbuf chain on the inner ip/ip6 header boundary */
+ if ((n = m_split(m, off, M_DONTWAIT)) == NULL)
+ return (-1);
+
+ /* old header */
+ olen = pd2->off - off;
+ /* new header */
+ hlen = naf == AF_INET ? sizeof(*ip4) : sizeof(*ip6);
+
+ /* trim old header */
+ m_adj(n, olen);
+
+ /* prepend a new one */
+ if (M_PREPEND(n, hlen, M_DONTWAIT, 0) == NULL)
+ return (-1);
+
+ /* translate inner ip/ip6 header */
+ switch (naf) {
+ case AF_INET:
+ ip4 = mtod(n, struct ip *);
+ 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 = 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->v4;
+ ip4->ip_dst = dst->v4;
+ ip4->ip_sum = in_cksum(n, ip4->ip_hl << 2);
+ break;
+ case AF_INET6:
+ ip6 = mtod(n, struct 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->v6;
+ ip6->ip6_dst = dst->v6;
+ break;
+ }
+
+ /* adjust payload offset and total packet length */
+ pd2->off += hlen - olen;
+ pd->tot_len += hlen - olen;
+
+ /* merge modified inner packet with the original header */
+ mlen = n->m_pkthdr.len;
+ m_cat(m, n);
+ m->m_pkthdr.len += mlen;
+
+ 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 ICMP6_DST_UNREACH_ADMIN:
+ code = ICMP_UNREACH_HOST_PROHIB;
+ break;
+ case ICMP6_DST_UNREACH_NOPORT:
+ code = ICMP_UNREACH_PORT;
+ break;
+ 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;
+ case ICMP6_PARAMPROB_NEXTHEADER:
+ type = ICMP_UNREACH;
+ code = ICMP_UNREACH_PROTOCOL;
+ break;
+ 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:
+ 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);
+}
+
+static int
+pf_nat64_ipv6(struct mbuf *m, int off, struct pf_pdesc *pd)
+{
+ struct ip *ip4;
+
+ /*
+ * 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 (m->m_pkthdr.rcvif == NULL)
+ return (PF_DROP);
+
+ /* trim the old header */
+ m_adj(m, off);
+
+ /* prepend the new one */
+ if (M_PREPEND(m, sizeof(*ip4), M_DONTWAIT, 0) == NULL)
+ return (PF_DROP);
+
+ ip4 = mtod(m, struct ip *);
+ 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.v4;
+ ip4->ip_dst = pd->ndaddr.v4;
+ ip4->ip_sum = in_cksum(m, ip4->ip_hl << 2);
+
+ /* recalculate icmp checksums */
+ if (pd->proto == IPPROTO_ICMP) {
+ struct mbuf *mp;
+ struct icmp *icmp;
+ int moff, hlen = sizeof(*ip4);
+
+ if ((mp = m_pulldown(m, hlen, ICMP_MINLEN, &moff)) == NULL)
+ return (PF_NAT64);
+
+ icmp = (struct icmp *)(void *)(mtod(mp, char *) + moff);
+ icmp->icmp_cksum = 0;
+ icmp->icmp_cksum = inet_cksum(m, 0, hlen,
+ ntohs(ip4->ip_len) - hlen);
+ }
+
+ ip_input(m);
+ return (PF_NAT64);
+}
+
+static int
+pf_nat64_ipv4(struct mbuf *m, int off, struct pf_pdesc *pd)
+{
+ struct ip6_hdr *ip6;
+
+ if (m->m_pkthdr.rcvif == NULL)
+ return (PF_DROP);
+
+ m_adj(m, off);
+ if (M_PREPEND(m, sizeof(*ip6), M_DONTWAIT, 0) == NULL)
+ return (PF_DROP);
+
+ ip6 = mtod(m, struct ip6_hdr *);
+ 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.v6;
+ ip6->ip6_dst = pd->ndaddr.v6;
+
+ /* recalculate icmp6 checksums */
+ if (pd->proto == IPPROTO_ICMPV6) {
+ struct mbuf *mp;
+ struct icmp6_hdr *icmp6;
+ int moff, hlen = sizeof(*ip6);
+
+ if ((mp = m_pulldown(m, hlen, sizeof(*icmp6), &moff)) == NULL)
+ return (PF_NAT64);
+
+ icmp6 = (struct icmp6_hdr *)(void *)(mtod(mp, char *) + moff);
+ icmp6->icmp6_cksum = 0;
+ icmp6->icmp6_cksum = inet6_cksum(m, IPPROTO_ICMPV6, hlen,
+ ntohs(ip6->ip6_plen));
+ }
+ 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, struct mbuf *m, int off, void *h,
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;
u_int8_t icmptype = 0, icmpcode = 0;
struct pf_grev1_hdr *grev1 = pd->hdr.grev1;
- union pf_state_xport bxport, nxport, sxport, dxport;
+ union pf_state_xport bxport, bdxport, nxport, sxport, dxport;
struct pf_state_key psk;
lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
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);
+ sxport.port = uh->uh_sport;
+ dxport.port = uh->uh_dport;
+ hdrlen = sizeof (*uh);
break;
#if INET
case IPPROTO_ICMP:
r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
- 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)) !=
+ bxport = sxport;
+ bdxport = dxport;
+
+ if (direction == PF_OUT)
+ nxport = sxport;
+ else
+ nxport = dxport;
+
+ /* check packet for BINAT/NAT/RDR */
+ if ((nr = pf_get_translation_aux(pd, m, off, direction, kif, &nsn,
+ saddr, &sxport, daddr, &dxport, &nxport)) !=
NULL) {
- PF_ACPY(&pd->baddr, saddr, af);
- switch (pd->proto) {
- case IPPROTO_TCP:
+ 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);
+ &th->th_sport, pd->ip_sum, &th->th_sum,
+ &pd->naddr, nxport.port, 0, af,
+ pd->naf, ua);
sxport.port = th->th_sport;
- rewrite++;
- break;
- case IPPROTO_UDP:
+ }
+
+ 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->ndaddr,
+ dport, 0, af, pd->naf, ua);
+ dxport.port = th->th_dport;
+ }
+ rewrite++;
+ break;
+
+ case IPPROTO_UDP:
+ if (pd->af != pd->naf ||
+ PF_ANEQ(saddr, &pd->naddr, pd->af)) {
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++;
- 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;
- }
- 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++;
- }
- 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;
- break;
- case IPPROTO_ESP:
- bxport.spi = 0;
- switch (af) {
+ &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,
+ &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 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 */
- }
+ case IPPROTO_ICMP:
+ if (pd->af != AF_INET)
break;
- default:
- switch (af) {
-#if INET
- case AF_INET:
- pf_change_a(&saddr->v4.s_addr,
- pd->ip_sum, pd->naddr.v4.s_addr, 0);
- 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->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;
+ }
+
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ pf_change_a(&daddr->v4.s_addr, pd->ip_sum,
+ pd->ndaddr.v4.s_addr, 0);
+ }
+ ++rewrite;
+ break;
#endif /* INET */
#if INET6
- case AF_INET6:
- PF_ACPY(saddr, &pd->naddr, af);
- break;
-#endif /* INET */
- }
+ 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 (nr->natpass)
- r = NULL;
- pd->nat_rule = nr;
- }
- } 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:
- pf_change_ap(direction, pd->mp, daddr,
- &th->th_dport, pd->ip_sum, &th->th_sum,
- &pd->naddr, nxport.port, 0, af);
- 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->naddr,
- nxport.port, 1, af);
- dxport.port = pd->hdr.udp->uh_dport;
- rewrite++;
- break;
+ 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->v4.s_addr,
+ pd->ip_sum,
+ pd->naddr.v4.s_addr, 0);
+ }
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
+ pf_change_a(&daddr->v4.s_addr,
+ pd->ip_sum,
+ pd->ndaddr.v4.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:
+ case AF_INET:
+ if (PF_ANEQ(saddr, &pd->naddr, pd->af)) {
+ pf_change_a(&saddr->v4.s_addr,
+ pd->ip_sum, pd->naddr.v4.s_addr, 0);
+ }
+ if (PF_ANEQ(daddr, &pd->ndaddr, pd->af)) {
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 */
+ pd->ip_sum,
+ pd->ndaddr.v4.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;
+ 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 */
+ }
+ break;
+ default:
+ switch (pd->af) {
+#if INET
+ 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;
- default:
- 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);
- 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 */
}
-
- if (nr->natpass)
- r = NULL;
- pd->nat_rule = nr;
+ break;
}
+
+ if (nr->natpass)
+ r = NULL;
+ pd->nat_rule = nr;
+ pd->af = pd->naf;
}
if (nr && nr->tag > 0)
r = r->skip[PF_SKIP_IFP].ptr;
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)
r = r->skip[PF_SKIP_PROTO].ptr;
- else if (PF_MISMATCHAW(&r->src.addr, saddr, af,
+ 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 */
r->src.xport.range.port[0], r->src.xport.range.port[1],
th->th_sport))
r = r->skip[PF_SKIP_SRC_PORT].ptr;
- else if (PF_MISMATCHAW(&r->dst.addr, daddr, af,
+ 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 */
m_copyback(m, off, hdrlen, pd->hdr.any);
}
- PFLOG_PACKET(kif, h, m, af, direction, reason, r->log ? r : nr,
- a, ruleset, pd);
+ PFLOG_PACKET(kif, h, m, 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;
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;
case IPPROTO_GRE:
if (pd->proto_variant ==
PF_GRE_PPTP_VARIANT)
- grev1->call_id = bxport.call_id;
+ grev1->call_id =
+ bdxport.call_id;
++rewrite;
switch (af) {
#if INET
case AF_INET:
pf_change_a(&daddr->v4.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->bdaddr.v4.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 */
case AF_INET:
pf_change_a(&daddr->v4.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->bdaddr.v4.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 */
case AF_INET:
pf_change_a(&daddr->v4.s_addr,
pd->ip_sum,
- pd->baddr.v4.s_addr, 0);
+ pd->bdaddr.v4.s_addr, 0);
break;
#if INET6
case AF_INET6:
- PF_ACPY(daddr, &pd->baddr, af);
+ PF_ACPY(daddr, &pd->bdaddr, af);
break;
#endif /* INET6 */
}
struct ip6_hdr *h6;
#endif /* INET6 */
- switch (af) {
+ switch (pd->af) {
case AF_INET:
h4 = mtod(m, struct ip *);
len = ntohs(h4->ip_len) - off;
#endif /* INET6 */
}
- if (pf_check_proto_cksum(m, off, len, IPPROTO_TCP, af))
+ if (pf_check_proto_cksum(m, off, len, IPPROTO_TCP,
+ pd->af))
REASON_SET(&reason, PFRES_PROTCKSUM);
else {
if (th->th_flags & TH_SYN)
ack++;
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,
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);
+ 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 & 255, pd->af, r);
}
if (r->action == PF_DROP)
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 = 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(v4/v6), 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(v4/v6), 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) {
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);
if (ntohs(uh->uh_sport) == PF_IKE_PORT &&
* partial state is allowed for each external address.
*/
memset(&sk0, 0, sizeof (sk0));
- sk0.af = pd->af;
+ 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,
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;
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) {
}
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) {
if (pd->proto == IPPROTO_TCP &&
(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;
}
}
}
m_copyback(m, off, hdrlen, pd->hdr.any);
+ if (af == AF_INET6 && pd->naf == AF_INET)
+ return pf_nat64_ipv6(m, off, pd);
+ else if (af == AF_INET && pd->naf == AF_INET6)
+ return pf_nat64_ipv4(m, off, pd);
+
}
return (PF_PASS);
NTOHS(iphdr->ip_len);
NTOHS(iphdr->ip_off);
}
- /*
+ /*
* Don't need to unlock pf_lock as NET_THREAD_HELD_PF
* allows for recursive behavior
*/
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->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));
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;
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);
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)) {
/*
return ((d > 0) ? 1 : ((d < 0) ? -1 : 0));
}
+static int
+pf_do_nat64(struct pf_state_key *sk, struct pf_pdesc *pd, struct mbuf *m,
+ 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(m, 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(m, 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,
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);
}
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);
}
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);
} 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);
} else if ((*state)->src_node != NULL &&
REASON_SET(reason, PFRES_SRCLIMIT);
return (PF_DROP);
} else
- (*state)->src.state = PF_TCPS_PROXY_DST;
+ 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 (direction == sk->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)) {
+ (ntohl(th->th_ack) != src->seqhi + 1) ||
+ (ntohl(th->th_seq) != src->seqlo + 1)) {
REASON_SET(reason, PFRES_SYNPROXY);
return (PF_DROP);
}
- (*state)->src.max_win = MAX(ntohs(th->th_win), 1);
- if ((*state)->dst.seqhi == 1)
- (*state)->dst.seqhi = htonl(random());
+ src->max_win = MAX(ntohs(th->th_win), 1);
+ if (dst->seqhi == 1)
+ 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)) {
+ (ntohl(th->th_ack) != dst->seqhi + 1)) {
REASON_SET(reason, PFRES_SYNPROXY);
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);
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);
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");
}
/* 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))
pf_send_tcp((*state)->rule.ptr, pd->af,
(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',
/* 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);
}
/* 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);
+ 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);
}
/* Copyback sequence modulation or stateful scrub changes */
m_copyback(m, off, sizeof (*th), th);
- }
+ if (sk->af_lan != sk->af_gwy)
+ return (pf_do_nat64(sk, pd, m, off));
+ }
return (PF_PASS);
}
#pragma unused(h)
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) {
}
}
- *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 (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 {
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);
}
/* translate source/destination address, if necessary */
- if (STATE_TRANSLATE((*state)->state_key)) {
+ if (STATE_TRANSLATE(sk)) {
m = pf_lazy_makewritable(pd, m, off + sizeof (*uh));
if (!m) {
REASON_SET(reason, PFRES_MEMORY);
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);
+ 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);
+ }
+ }
+
m_copyback(m, off, sizeof (*uh), uh);
+ if (sk->af_lan != sk->af_gwy)
+ return (pf_do_nat64(sk, pd, m, off));
}
-
return (PF_PASS);
}
{
#pragma unused(h)
struct pf_addr *saddr = pd->src, *daddr = pd->dst;
+ struct in_addr srcv4_inaddr = saddr->v4;
u_int16_t icmpid = 0, *icmpsum;
u_int8_t icmptype;
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:
* 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(v4/v6), 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,
pd->ip_sum,
- (*state)->state_key->gwy.addr.v4.s_addr, 0);
+ sk->gwy.addr.v4.s_addr, 0);
pd->hdr.icmp->icmp_cksum =
pf_cksum_fixup(
pd->hdr.icmp->icmp_cksum, icmpid,
- (*state)->state_key->gwy.xport.port, 0);
+ sk->gwy.xport.port, 0);
pd->hdr.icmp->icmp_id =
- (*state)->state_key->gwy.xport.port;
+ sk->gwy.xport.port;
m = pf_lazy_makewritable(pd, m,
- off + ICMP_MINLEN);
+ off + ICMP_MINLEN);
if (!m)
return (PF_DROP);
m_copyback(m, off, ICMP_MINLEN,
case AF_INET6:
pf_change_a6(saddr,
&pd->hdr.icmp6->icmp6_cksum,
- &(*state)->state_key->gwy.addr, 0);
+ &sk->gwy.addr, 0);
m = pf_lazy_makewritable(pd, m,
off + sizeof (struct icmp6_hdr));
if (!m)
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;
+ 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->v4.s_addr,
+ pd->ip_sum,
+ sk->lan.addr.v4.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;
+ }
+
m = pf_lazy_makewritable(pd, m,
off + ICMP_MINLEN);
if (!m)
return (PF_DROP);
m_copyback(m, off, ICMP_MINLEN,
- pd->hdr.icmp);
+ pd->hdr.icmp);
+ if (sk->af_lan != sk->af_gwy)
+ return (pf_do_nat64(sk, pd, m,
+ off));
break;
#endif /* INET */
#if INET6
case AF_INET6:
- pf_change_a6(daddr,
- &pd->hdr.icmp6->icmp6_cksum,
- &(*state)->state_key->lan.addr, 0);
+ 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);
+ }
m = pf_lazy_makewritable(pd, m,
off + sizeof (struct icmp6_hdr));
if (!m)
return (PF_DROP);
m_copyback(m, off,
- sizeof (struct icmp6_hdr),
- pd->hdr.icmp6);
+ sizeof (struct icmp6_hdr),
+ pd->hdr.icmp6);
+ if (sk->af_lan != sk->af_gwy)
+ return (pf_do_nat64(sk, pd, m,
+ off));
break;
#endif /* INET6 */
}
* 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;
#endif /* INET */
/* 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;
break;
}
} while (!terminal);
+ /* TODO */
+ pd2.off = ipoff2;
break;
#endif /* INET6 */
}
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 {
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);
+ m =
+ pf_lazy_makewritable(pd, m, off2 + 8);
+ if (!m)
+ return (PF_DROP);
+
+ m_copyback(m, pd->off,
+ sizeof(struct icmp6_hdr),
+ pd->hdr.icmp6);
+
+ /*
+ * translate inner ip header within the
+ * ICMP message
+ */
+ if (pf_change_icmp_af(m, 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);
+
+ m_copyback(m, 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(m, off,
+ pd));
+ } else {
+ return (pf_nat64_ipv6(m, 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);
}
break;
}
case IPPROTO_UDP: {
- struct udphdr uh;
+ struct udphdr uh;
int dx, action;
if (!pf_pull_hdr(m, off2, &uh, sizeof (uh),
NULL, reason, pd2.af)) {
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) {
if (pf_state_lookup_aux(state, kif, direction, &action))
return (action);
- if (STATE_TRANSLATE((*state)->state_key)) {
+ 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);
+ m =
+ pf_lazy_makewritable(pd, m, off2 + 8);
+ if (!m)
+ return (PF_DROP);
+
+ m_copyback(m, pd->off,
+ sizeof(struct icmp6_hdr),
+ pd->hdr.icmp6);
+
+ /*
+ * translate inner ip header within the
+ * ICMP message
+ */
+ if (pf_change_icmp_af(m, 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 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);
+
+ m_copyback(m, 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(m, off,
+ pd));
+ } else {
+ return (pf_nat64_ipv6(m, 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);
}
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;
+ 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);
+ m = pf_lazy_makewritable(pd, m,
+ off2 + ICMP_MINLEN);
if (!m)
return (PF_DROP);
m_copyback(m, off, ICMP_MINLEN, pd->hdr.icmp);
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;
+ 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);
}
}
#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;
+ 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,
- pd2.ip_sum, icmpsum,
- pd->ip_sum, 0, pd2.af);
+ 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,
- pd2.ip_sum, icmpsum,
- pd->ip_sum, 0, pd2.af);
+ 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
#if INET6
case AF_INET6:
m = pf_lazy_makewritable(pd, m,
- ipoff2 + sizeof (h2_6));
+ ipoff2 + sizeof (h2_6));
if (!m)
return (PF_DROP);
m_copyback(m, off,
- sizeof (struct icmp6_hdr),
- pd->hdr.icmp6);
+ sizeof (struct icmp6_hdr),
+ pd->hdr.icmp6);
m_copyback(m, ipoff2, sizeof (h2_6),
- &h2_6);
+ &h2_6);
break;
#endif /* INET6 */
}
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);
+ 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();
int action;
memset(&key, 0, sizeof (key));
- key.af = pd->af;
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);
+ 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);
*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))
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;
+ 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();
pd.pf_mtag = pf_get_mtag(m);
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;
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.pf_mtag = pf_get_mtag(m);
pd.af = AF_INET;
pd.tos = h->ip_tos;
+ pd.ttl = h->ip_ttl;
pd.sc = MBUF_SCIDX(mbuf_get_service_class(m));
pd.tot_len = ntohs(h->ip_len);
pd.eh = eh;
goto done;
action = pf_test_state_tcp(&s, dir, kif, m, off, h, &pd,
&reason);
+ if (action == PF_NAT64)
+ goto done;
if (pd.lmw < 0)
goto done;
PF_APPLE_UPDATE_PDESC_IPv4();
#endif /* DUMMYNET */
action = pf_test_state_udp(&s, dir, kif, m, off, h, &pd,
&reason);
+ if (action == PF_NAT64)
+ goto done;
if (pd.lmw < 0)
goto done;
PF_APPLE_UPDATE_PDESC_IPv4();
#endif /* DUMMYNET */
action = pf_test_state_icmp(&s, dir, kif, m, off, h, &pd,
&reason);
+ if (action == PF_NAT64)
+ goto done;
if (pd.lmw < 0)
goto done;
PF_APPLE_UPDATE_PDESC_IPv4();
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);
break;
}
done:
+ if (action == PF_NAT64) {
+ *m0 = NULL;
+ return (action);
+ }
+
*m0 = pd.mp;
PF_APPLE_UPDATE_PDESC_IPv4();
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);
+ 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.ttl = h->ip6_hlim;
pd.sc = MBUF_SCIDX(mbuf_get_service_class(m));
pd.tot_len = ntohs(h->ip6_plen) + sizeof(struct ip6_hdr);
pd.eh = eh;
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);
+ 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.ttl = h->ip6_hlim;
pd.tot_len = ntohs(h->ip6_plen) + sizeof (struct ip6_hdr);
pd.eh = eh;
goto done;
action = pf_test_state_tcp(&s, dir, kif, m, off, h, &pd,
&reason);
+ if (action == PF_NAT64)
+ goto done;
if (pd.lmw < 0)
goto done;
PF_APPLE_UPDATE_PDESC_IPv6();
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);
break;
#endif /* DUMMYNET */
action = pf_test_state_udp(&s, dir, kif, m, off, h, &pd,
&reason);
+ if (action == PF_NAT64)
+ goto done;
if (pd.lmw < 0)
goto done;
PF_APPLE_UPDATE_PDESC_IPv6();
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);
break;
#endif /* DUMMYNET */
action = pf_test_state_icmp(&s, dir, kif,
m, off, h, &pd, &reason);
+ if (action == PF_NAT64)
+ goto done;
if (pd.lmw < 0)
goto done;
PF_APPLE_UPDATE_PDESC_IPv6();
}
done:
+ if (action == PF_NAT64) {
+ *m0 = NULL;
+ return (action);
+ }
+
*m0 = pd.mp;
PF_APPLE_UPDATE_PDESC_IPv6();
projects / apple / xnu.git / blobdiff