/*
- * Copyright (c) 2003-2015 Apple Inc. All rights reserved.
+ * Copyright (c) 2003-2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#endif /* INET */
#include <netinet/kpi_ipfilter_var.h>
#include <netinet/ip6.h>
+#include <netinet/udp.h>
#include <netinet6/in6_var.h>
#include <netinet6/ip6_var.h>
#include <netinet/in_pcb.h>
extern int ipsec_bypass;
#endif /* IPSEC */
-#if IPFW2
-#include <netinet6/ip6_fw.h>
-#endif /* IPFW2 */
-
#if DUMMYNET
-#include <netinet/ip_fw.h>
#include <netinet/ip_dummynet.h>
#endif /* DUMMYNET */
#include <net/pfvar.h>
#endif /* PF */
+#include <os/log.h>
+
struct ip6protosw *ip6_protox[IPPROTO_MAX];
-static lck_grp_attr_t *in6_ifaddr_rwlock_grp_attr;
-static lck_grp_t *in6_ifaddr_rwlock_grp;
-static lck_attr_t *in6_ifaddr_rwlock_attr;
+static lck_grp_attr_t *in6_ifaddr_rwlock_grp_attr;
+static lck_grp_t *in6_ifaddr_rwlock_grp;
+static lck_attr_t *in6_ifaddr_rwlock_attr;
decl_lck_rw_data(, in6_ifaddr_rwlock);
/* Protected by in6_ifaddr_rwlock */
-struct in6_ifaddr *in6_ifaddrs = NULL;
+struct in6_ifaddrhead in6_ifaddrhead;
+struct in6_ifaddrhashhead * in6_ifaddrhashtbl;
+uint32_t in6_ifaddrhmask;
+
+#define IN6ADDR_NHASH 61
+u_int32_t in6addr_nhash = 0; /* hash table size */
+u_int32_t in6addr_hashp = 0; /* next largest prime */
-#define IN6_IFSTAT_REQUIRE_ALIGNED_64(f) \
+
+#define IN6_IFSTAT_REQUIRE_ALIGNED_64(f) \
_CASSERT(!(offsetof(struct in6_ifstat, f) % sizeof (uint64_t)))
-#define ICMP6_IFSTAT_REQUIRE_ALIGNED_64(f) \
+#define ICMP6_IFSTAT_REQUIRE_ALIGNED_64(f) \
_CASSERT(!(offsetof(struct icmp6_ifstat, f) % sizeof (uint64_t)))
-#if IPFW2
-/* firewall hooks */
-ip6_fw_chk_t *ip6_fw_chk_ptr;
-ip6_fw_ctl_t *ip6_fw_ctl_ptr;
-int ip6_fw_enable = 1;
-#endif /* IPFW2 */
-
struct ip6stat ip6stat;
decl_lck_mtx_data(, proxy6_lock);
decl_lck_mtx_data(static, dad6_mutex_data);
decl_lck_mtx_data(static, nd6_mutex_data);
decl_lck_mtx_data(static, prefix6_mutex_data);
-lck_mtx_t *dad6_mutex = &dad6_mutex_data;
-lck_mtx_t *nd6_mutex = &nd6_mutex_data;
-lck_mtx_t *prefix6_mutex = &prefix6_mutex_data;
+lck_mtx_t *dad6_mutex = &dad6_mutex_data;
+lck_mtx_t *nd6_mutex = &nd6_mutex_data;
+lck_mtx_t *prefix6_mutex = &prefix6_mutex_data;
#ifdef ENABLE_ADDRSEL
decl_lck_mtx_data(static, addrsel_mutex_data);
-lck_mtx_t *addrsel_mutex = &addrsel_mutex_data;
+lck_mtx_t *addrsel_mutex = &addrsel_mutex_data;
#endif
-static lck_attr_t *ip6_mutex_attr;
-static lck_grp_t *ip6_mutex_grp;
-static lck_grp_attr_t *ip6_mutex_grp_attr;
+static lck_attr_t *ip6_mutex_attr;
+static lck_grp_t *ip6_mutex_grp;
+static lck_grp_attr_t *ip6_mutex_grp_attr;
extern int loopattach_done;
extern void addrsel_policy_init(void);
static void ip6_init_delayed(void);
static int ip6_hopopts_input(u_int32_t *, u_int32_t *, struct mbuf **, int *);
+static void in6_ifaddrhashtbl_init(void);
+
#if NSTF
extern void stfattach(void);
#endif /* NSTF */
SYSCTL_DECL(_net_inet6_ip6);
-int ip6_doscopedroute = 1;
-SYSCTL_INT(_net_inet6_ip6, OID_AUTO, scopedroute,
- CTLFLAG_RD | CTLFLAG_LOCKED, &ip6_doscopedroute, 0,
- "Enable IPv6 scoped routing");
-
static uint32_t ip6_adj_clear_hwcksum = 0;
SYSCTL_UINT(_net_inet6_ip6, OID_AUTO, adj_clear_hwcksum,
- CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_adj_clear_hwcksum, 0,
- "Invalidate hwcksum info when adjusting length");
+ CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_adj_clear_hwcksum, 0,
+ "Invalidate hwcksum info when adjusting length");
+
+static uint32_t ip6_adj_partial_sum = 1;
+SYSCTL_UINT(_net_inet6_ip6, OID_AUTO, adj_partial_sum,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_adj_partial_sum, 0,
+ "Perform partial sum adjustment of trailing bytes at IP layer");
static int ip6_input_measure = 0;
SYSCTL_PROC(_net_inet6_ip6, OID_AUTO, input_perf,
- CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
- &ip6_input_measure, 0, sysctl_reset_ip6_input_stats, "I", "Do time measurement");
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
+ &ip6_input_measure, 0, sysctl_reset_ip6_input_stats, "I", "Do time measurement");
static uint64_t ip6_input_measure_bins = 0;
SYSCTL_PROC(_net_inet6_ip6, OID_AUTO, input_perf_bins,
- CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_input_measure_bins, 0,
- sysctl_ip6_input_measure_bins, "I",
- "bins for chaining performance data histogram");
+ CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_input_measure_bins, 0,
+ sysctl_ip6_input_measure_bins, "I",
+ "bins for chaining performance data histogram");
static net_perf_t net_perf;
SYSCTL_PROC(_net_inet6_ip6, OID_AUTO, input_perf_data,
- CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED,
- 0, 0, sysctl_ip6_input_getperf, "S,net_perf",
- "IP6 input performance data (struct net_perf, net/net_perf.h)");
+ CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED,
+ 0, 0, sysctl_ip6_input_getperf, "S,net_perf",
+ "IP6 input performance data (struct net_perf, net/net_perf.h)");
+
+/*
+ * ip6_checkinterface controls the receive side of the models for multihoming
+ * that are discussed in RFC 1122.
+ *
+ * sysctl_ip6_checkinterface values are:
+ * IP6_CHECKINTERFACE_WEAK_ES:
+ * This corresponds to the Weak End-System model where incoming packets from
+ * any interface are accepted provided the destination address of the incoming packet
+ * is assigned to some interface.
+ *
+ * IP6_CHECKINTERFACE_HYBRID_ES:
+ * The Hybrid End-System model use the Strong End-System for tunnel interfaces
+ * (ipsec and utun) and the weak End-System model for other interfaces families.
+ * This prevents a rogue middle box to probe for signs of TCP connections
+ * that use the tunnel interface.
+ *
+ * IP6_CHECKINTERFACE_STRONG_ES:
+ * The Strong model model requires the packet arrived on an interface that
+ * is assigned the destination address of the packet.
+ *
+ * Since the routing table and transmit implementation do not implement the Strong ES model,
+ * setting this to a value different from IP6_CHECKINTERFACE_WEAK_ES may lead to unexpected results.
+ *
+ * When forwarding is enabled, the system reverts to the Weak ES model as a router
+ * is expected by design to receive packets from several interfaces to the same address.
+ */
+#define IP6_CHECKINTERFACE_WEAK_ES 0
+#define IP6_CHECKINTERFACE_HYBRID_ES 1
+#define IP6_CHECKINTERFACE_STRONG_ES 2
+
+static int ip6_checkinterface = IP6_CHECKINTERFACE_HYBRID_ES;
+
+static int sysctl_ip6_checkinterface SYSCTL_HANDLER_ARGS;
+SYSCTL_PROC(_net_inet6_ip6, OID_AUTO, check_interface,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
+ 0, 0, sysctl_ip6_checkinterface, "I", "Verify packet arrives on correct interface");
+
+#if (DEBUG || DEVELOPMENT)
+#define IP6_CHECK_IFDEBUG 1
+#else
+#define IP6_CHECK_IFDEBUG 0
+#endif /* (DEBUG || DEVELOPMENT) */
+static int ip6_checkinterface_debug = IP6_CHECK_IFDEBUG;
+SYSCTL_INT(_net_inet6_ip6, OID_AUTO, checkinterface_debug, CTLFLAG_RW | CTLFLAG_LOCKED,
+ &ip6_checkinterface_debug, IP6_CHECK_IFDEBUG, "");
+
+typedef enum ip6_check_if_result {
+ IP6_CHECK_IF_NONE = 0,
+ IP6_CHECK_IF_OURS = 1,
+ IP6_CHECK_IF_DROP = 2,
+ IP6_CHECK_IF_FORWARD = 3
+} ip6_check_if_result_t;
+
+static ip6_check_if_result_t ip6_input_check_interface(struct mbuf *, struct ip6_hdr *, struct ifnet *, struct route_in6 *rin6, struct ifnet **);
/*
* On platforms which require strict alignment (currently for anything but
* load/store operations on the fields in IPv6 headers.
*/
#if defined(__i386__) || defined(__x86_64__)
-#define IP6_HDR_ALIGNMENT_FIXUP(_m, _ifp, _action) do { } while (0)
+#define IP6_HDR_ALIGNMENT_FIXUP(_m, _ifp, _action) do { } while (0)
#else /* !__i386__ && !__x86_64__ */
-#define IP6_HDR_ALIGNMENT_FIXUP(_m, _ifp, _action) do { \
- if (!IP6_HDR_ALIGNED_P(mtod(_m, caddr_t))) { \
- struct mbuf *_n; \
- struct ifnet *__ifp = (_ifp); \
- atomic_add_64(&(__ifp)->if_alignerrs, 1); \
- if (((_m)->m_flags & M_PKTHDR) && \
- (_m)->m_pkthdr.pkt_hdr != NULL) \
- (_m)->m_pkthdr.pkt_hdr = NULL; \
- _n = m_defrag_offset(_m, max_linkhdr, M_NOWAIT); \
- if (_n == NULL) { \
- ip6stat.ip6s_toosmall++; \
- m_freem(_m); \
- (_m) = NULL; \
- _action; \
- } else { \
- VERIFY(_n != (_m)); \
- (_m) = _n; \
- } \
- } \
+#define IP6_HDR_ALIGNMENT_FIXUP(_m, _ifp, _action) do { \
+ if (!IP6_HDR_ALIGNED_P(mtod(_m, caddr_t))) { \
+ struct mbuf *_n; \
+ struct ifnet *__ifp = (_ifp); \
+ atomic_add_64(&(__ifp)->if_alignerrs, 1); \
+ if (((_m)->m_flags & M_PKTHDR) && \
+ (_m)->m_pkthdr.pkt_hdr != NULL) \
+ (_m)->m_pkthdr.pkt_hdr = NULL; \
+ _n = m_defrag_offset(_m, max_linkhdr, M_NOWAIT); \
+ if (_n == NULL) { \
+ ip6stat.ip6s_toosmall++; \
+ m_freem(_m); \
+ (_m) = NULL; \
+ _action; \
+ } else { \
+ VERIFY(_n != (_m)); \
+ (_m) = _n; \
+ } \
+ } \
} while (0)
#endif /* !__i386__ && !__x86_64__ */
#pragma unused(protocol)
#if INET
struct timeval start_tv;
- if (ip6_input_measure)
+ if (ip6_input_measure) {
net_perf_start_time(&net_perf, &start_tv);
+ }
#endif /* INET */
ip6_input(packet);
#if INET
domain_unguard_t unguard;
domain_proto_mtx_lock_assert_held();
- VERIFY((pp->pr_flags & (PR_INITIALIZED|PR_ATTACHED)) == PR_ATTACHED);
+ VERIFY((pp->pr_flags & (PR_INITIALIZED | PR_ATTACHED)) == PR_ATTACHED);
- _CASSERT((sizeof (struct ip6_hdr) +
- sizeof (struct icmp6_hdr)) <= _MHLEN);
+ _CASSERT((sizeof(struct ip6_hdr) +
+ sizeof(struct icmp6_hdr)) <= _MHLEN);
- if (ip6_initialized)
+ if (ip6_initialized) {
return;
+ }
ip6_initialized = 1;
- PE_parse_boot_argn("net.inet6.ip6.scopedroute", &ip6_doscopedroute,
- sizeof (ip6_doscopedroute));
+ eventhandler_lists_ctxt_init(&in6_evhdlr_ctxt);
+ (void)EVENTHANDLER_REGISTER(&in6_evhdlr_ctxt, in6_event,
+ in6_eventhdlr_callback, eventhandler_entry_dummy_arg,
+ EVENTHANDLER_PRI_ANY);
+
+ eventhandler_lists_ctxt_init(&in6_clat46_evhdlr_ctxt);
+ (void)EVENTHANDLER_REGISTER(&in6_clat46_evhdlr_ctxt, in6_clat46_event,
+ in6_clat46_eventhdlr_callback, eventhandler_entry_dummy_arg,
+ EVENTHANDLER_PRI_ANY);
+
+ for (i = 0; i < IN6_EVENT_MAX; i++) {
+ VERIFY(in6_event2kev_array[i].in6_event_code == i);
+ }
pr = pffindproto_locked(PF_INET6, IPPROTO_RAW, SOCK_RAW);
if (pr == NULL) {
}
/* Initialize the entire ip6_protox[] array to IPPROTO_RAW. */
- for (i = 0; i < IPPROTO_MAX; i++)
+ for (i = 0; i < IPPROTO_MAX; i++) {
ip6_protox[i] = (struct ip6protosw *)pr;
+ }
/*
* Cycle through IP protocols and put them into the appropriate place
* in ip6_protox[], skipping protocols IPPROTO_{IP,RAW}.
VERIFY(pr->pr_domain == dp);
if (pr->pr_protocol != 0 && pr->pr_protocol != IPPROTO_RAW) {
/* Be careful to only index valid IP protocols. */
- if (pr->pr_protocol < IPPROTO_MAX)
+ if (pr->pr_protocol < IPPROTO_MAX) {
ip6_protox[pr->pr_protocol] =
(struct ip6protosw *)pr;
+ }
}
}
lck_rw_init(&in6_ifaddr_rwlock, in6_ifaddr_rwlock_grp,
in6_ifaddr_rwlock_attr);
+ TAILQ_INIT(&in6_ifaddrhead);
+ in6_ifaddrhashtbl_init();
+
IN6_IFSTAT_REQUIRE_ALIGNED_64(ifs6_in_receive);
IN6_IFSTAT_REQUIRE_ALIGNED_64(ifs6_in_hdrerr);
IN6_IFSTAT_REQUIRE_ALIGNED_64(ifs6_in_toobig);
ip6_desync_factor =
(RandomULong() ^ tv.tv_usec) % MAX_TEMP_DESYNC_FACTOR;
+ PE_parse_boot_argn("ip6_checkinterface", &i, sizeof(i));
+ switch (i) {
+ case IP6_CHECKINTERFACE_WEAK_ES:
+ case IP6_CHECKINTERFACE_HYBRID_ES:
+ case IP6_CHECKINTERFACE_STRONG_ES:
+ ip6_checkinterface = i;
+ break;
+ default:
+ break;
+ }
+
in6_ifaddr_init();
ip6_moptions_init();
nd6_init();
#endif /* NSTF */
}
+static void
+ip6_input_adjust(struct mbuf *m, struct ip6_hdr *ip6, uint32_t plen,
+ struct ifnet *inifp)
+{
+ boolean_t adjust = TRUE;
+ uint32_t tot_len = sizeof(*ip6) + plen;
+
+ ASSERT(m_pktlen(m) > tot_len);
+
+ /*
+ * Invalidate hardware checksum info if ip6_adj_clear_hwcksum
+ * is set; useful to handle buggy drivers. Note that this
+ * should not be enabled by default, as we may get here due
+ * to link-layer padding.
+ */
+ if (ip6_adj_clear_hwcksum &&
+ (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) &&
+ !(inifp->if_flags & IFF_LOOPBACK) &&
+ !(m->m_pkthdr.pkt_flags & PKTF_LOOP)) {
+ m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
+ m->m_pkthdr.csum_data = 0;
+ ip6stat.ip6s_adj_hwcsum_clr++;
+ }
+
+ /*
+ * If partial checksum information is available, subtract
+ * out the partial sum of postpended extraneous bytes, and
+ * update the checksum metadata accordingly. By doing it
+ * here, the upper layer transport only needs to adjust any
+ * prepended extraneous bytes (else it will do both.)
+ */
+ if (ip6_adj_partial_sum &&
+ (m->m_pkthdr.csum_flags & (CSUM_DATA_VALID | CSUM_PARTIAL)) ==
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) {
+ m->m_pkthdr.csum_rx_val = m_adj_sum16(m,
+ m->m_pkthdr.csum_rx_start, m->m_pkthdr.csum_rx_start,
+ (tot_len - m->m_pkthdr.csum_rx_start),
+ m->m_pkthdr.csum_rx_val);
+ } else if ((m->m_pkthdr.csum_flags &
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) ==
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) {
+ /*
+ * If packet has partial checksum info and we decided not
+ * to subtract the partial sum of postpended extraneous
+ * bytes here (not the default case), leave that work to
+ * be handled by the other layers. For now, only TCP, UDP
+ * layers are capable of dealing with this. For all other
+ * protocols (including fragments), trim and ditch the
+ * partial sum as those layers might not implement partial
+ * checksumming (or adjustment) at all.
+ */
+ if (ip6->ip6_nxt == IPPROTO_TCP ||
+ ip6->ip6_nxt == IPPROTO_UDP) {
+ adjust = FALSE;
+ } else {
+ m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
+ m->m_pkthdr.csum_data = 0;
+ ip6stat.ip6s_adj_hwcsum_clr++;
+ }
+ }
+
+ if (adjust) {
+ ip6stat.ip6s_adj++;
+ if (m->m_len == m->m_pkthdr.len) {
+ m->m_len = tot_len;
+ m->m_pkthdr.len = tot_len;
+ } else {
+ m_adj(m, tot_len - m->m_pkthdr.len);
+ }
+ }
+}
+static ip6_check_if_result_t
+ip6_input_check_interface(struct mbuf *m, struct ip6_hdr *ip6, struct ifnet *inifp, struct route_in6 *rin6, struct ifnet **deliverifp)
+{
+ struct in6_ifaddr *ia6 = NULL;
+ struct in6_addr tmp_dst = ip6->ip6_dst; /* copy to avoid unaligned access */
+ struct in6_ifaddr *best_ia6 = NULL;
+ ip6_check_if_result_t result = IP6_CHECK_IF_NONE;
+
+ *deliverifp = NULL;
+
+ /*
+ * Check for exact addresses in the hash bucket.
+ */
+ lck_rw_lock_shared(&in6_ifaddr_rwlock);
+ TAILQ_FOREACH(ia6, IN6ADDR_HASH(&tmp_dst), ia6_hash) {
+ /*
+ * TODO: should we accept loopbacl
+ */
+ if (IN6_ARE_ADDR_EQUAL(&ia6->ia_addr.sin6_addr, &tmp_dst)) {
+ if ((ia6->ia6_flags & (IN6_IFF_NOTREADY | IN6_IFF_CLAT46))) {
+ continue;
+ }
+ best_ia6 = ia6;
+ if (ia6->ia_ifp == inifp) {
+ /*
+ * TODO: should we also accept locally originated packets
+ * or from loopback ???
+ */
+ break;
+ }
+ /*
+ * Continue the loop in case there's a exact match with another
+ * interface
+ */
+ }
+ }
+ if (best_ia6 != NULL) {
+ if (best_ia6->ia_ifp != inifp && ip6_forwarding == 0 &&
+ ((ip6_checkinterface == IP6_CHECKINTERFACE_HYBRID_ES &&
+ (best_ia6->ia_ifp->if_family == IFNET_FAMILY_IPSEC ||
+ best_ia6->ia_ifp->if_family == IFNET_FAMILY_UTUN)) ||
+ ip6_checkinterface == IP6_CHECKINTERFACE_STRONG_ES)) {
+ /*
+ * Drop when interface address check is strict and forwarding
+ * is disabled
+ */
+ result = IP6_CHECK_IF_DROP;
+ } else {
+ result = IP6_CHECK_IF_OURS;
+ *deliverifp = best_ia6->ia_ifp;
+ ip6_setdstifaddr_info(m, 0, best_ia6);
+ }
+ }
+ lck_rw_done(&in6_ifaddr_rwlock);
+
+ if (result == IP6_CHECK_IF_NONE) {
+ /*
+ * Slow path: route lookup.
+ */
+ struct sockaddr_in6 *dst6;
+
+ dst6 = SIN6(&rin6->ro_dst);
+ dst6->sin6_len = sizeof(struct sockaddr_in6);
+ dst6->sin6_family = AF_INET6;
+ dst6->sin6_addr = ip6->ip6_dst;
+
+ rtalloc_scoped_ign((struct route *)rin6,
+ RTF_PRCLONING, IFSCOPE_NONE);
+ if (rin6->ro_rt != NULL) {
+ RT_LOCK_SPIN(rin6->ro_rt);
+ }
+
+#define rt6_key(r) (SIN6((r)->rt_nodes->rn_key))
+
+ /*
+ * Accept the packet if the forwarding interface to the destination
+ * according to the routing table is the loopback interface,
+ * unless the associated route has a gateway.
+ * Note that this approach causes to accept a packet if there is a
+ * route to the loopback interface for the destination of the packet.
+ * But we think it's even useful in some situations, e.g. when using
+ * a special daemon which wants to intercept the packet.
+ *
+ * XXX: some OSes automatically make a cloned route for the destination
+ * of an outgoing packet. If the outgoing interface of the packet
+ * is a loopback one, the kernel would consider the packet to be
+ * accepted, even if we have no such address assinged on the interface.
+ * We check the cloned flag of the route entry to reject such cases,
+ * assuming that route entries for our own addresses are not made by
+ * cloning (it should be true because in6_addloop explicitly installs
+ * the host route). However, we might have to do an explicit check
+ * while it would be less efficient. Or, should we rather install a
+ * reject route for such a case?
+ */
+ if (rin6->ro_rt != NULL &&
+ (rin6->ro_rt->rt_flags & (RTF_HOST | RTF_GATEWAY)) == RTF_HOST &&
+#if RTF_WASCLONED
+ !(rin6->ro_rt->rt_flags & RTF_WASCLONED) &&
+#endif
+ rin6->ro_rt->rt_ifp->if_type == IFT_LOOP) {
+ ia6 = (struct in6_ifaddr *)rin6->ro_rt->rt_ifa;
+ /*
+ * Packets to a tentative, duplicated, or somehow invalid
+ * address must not be accepted.
+ *
+ * For performance, test without acquiring the address lock;
+ * a lot of things in the address are set once and never
+ * changed (e.g. ia_ifp.)
+ */
+ if (!(ia6->ia6_flags & IN6_IFF_NOTREADY)) {
+ /* this address is ready */
+ result = IP6_CHECK_IF_OURS;
+ *deliverifp = ia6->ia_ifp; /* correct? */
+ /*
+ * record dst address information into mbuf.
+ */
+ (void) ip6_setdstifaddr_info(m, 0, ia6);
+ }
+ }
+
+ if (rin6->ro_rt != NULL) {
+ RT_UNLOCK(rin6->ro_rt);
+ }
+ }
+
+ if (result == IP6_CHECK_IF_NONE) {
+ if (ip6_forwarding == 0) {
+ result = IP6_CHECK_IF_DROP;
+ } else {
+ result = IP6_CHECK_IF_FORWARD;
+ ip6_setdstifaddr_info(m, inifp->if_index, NULL);
+ }
+ }
+
+ if (result == IP6_CHECK_IF_OURS && *deliverifp != inifp) {
+ ASSERT(*deliverifp != NULL);
+ ip6stat.ip6s_rcv_if_weak_match++;
+
+ /* Logging is too noisy when forwarding is enabled */
+ if (ip6_checkinterface_debug != IP6_CHECKINTERFACE_WEAK_ES && ip6_forwarding != 0) {
+ char src_str[MAX_IPv6_STR_LEN];
+ char dst_str[MAX_IPv6_STR_LEN];
+
+ inet_ntop(AF_INET6, &ip6->ip6_src, src_str, sizeof(src_str));
+ inet_ntop(AF_INET6, &ip6->ip6_dst, dst_str, sizeof(dst_str));
+ os_log_info(OS_LOG_DEFAULT,
+ "%s: weak ES interface match to %s for packet from %s to %s proto %u received via %s",
+ __func__, (*deliverifp)->if_xname, src_str, dst_str, ip6->ip6_nxt, inifp->if_xname);
+ }
+ } else if (result == IP6_CHECK_IF_DROP) {
+ ip6stat.ip6s_rcv_if_no_match++;
+ if (ip6_checkinterface_debug > 0) {
+ char src_str[MAX_IPv6_STR_LEN];
+ char dst_str[MAX_IPv6_STR_LEN];
+
+ inet_ntop(AF_INET6, &ip6->ip6_src, src_str, sizeof(src_str));
+ inet_ntop(AF_INET6, &ip6->ip6_dst, dst_str, sizeof(dst_str));
+ os_log(OS_LOG_DEFAULT,
+ "%s: no interface match for packet from %s to %s proto %u received via %s",
+ __func__, src_str, dst_str, ip6->ip6_nxt, inifp->if_xname);
+ }
+ }
+
+ return result;
+}
+
void
ip6_input(struct mbuf *m)
{
struct ip6_hdr *ip6;
- int off = sizeof (struct ip6_hdr), nest;
+ int off = sizeof(struct ip6_hdr), nest;
u_int32_t plen;
u_int32_t rtalert = ~0;
int nxt = 0, ours = 0;
struct ifnet *inifp, *deliverifp = NULL;
ipfilter_t inject_ipfref = NULL;
- int seen;
- struct in6_ifaddr *ia6 = NULL;
- struct sockaddr_in6 *dst6;
+ int seen = 1;
#if DUMMYNET
struct m_tag *tag;
+ struct ip_fw_args args = {};
#endif /* DUMMYNET */
- struct {
- struct route_in6 rin6;
-#if DUMMYNET
- struct ip_fw_args args;
-#endif /* DUMMYNET */
- } ip6ibz;
-#define rin6 ip6ibz.rin6
-#define args ip6ibz.args
-
- /* zero out {rin6, args} */
- bzero(&ip6ibz, sizeof (ip6ibz));
+ struct route_in6 rin6 = {};
/*
* Check if the packet we received is valid after interface filter
VERIFY(inifp != NULL);
/* Perform IP header alignment fixup, if needed */
- IP6_HDR_ALIGNMENT_FIXUP(m, inifp, return);
+ IP6_HDR_ALIGNMENT_FIXUP(m, inifp, return );
m->m_pkthdr.pkt_flags &= ~PKTF_FORWARDED;
#if IPSEC
#if DUMMYNET
if ((tag = m_tag_locate(m, KERNEL_MODULE_TAG_ID,
KERNEL_TAG_TYPE_DUMMYNET, NULL)) != NULL) {
- struct dn_pkt_tag *dn_tag;
+ struct dn_pkt_tag *dn_tag;
- dn_tag = (struct dn_pkt_tag *)(tag+1);
+ dn_tag = (struct dn_pkt_tag *)(tag + 1);
args.fwa_pf_rule = dn_tag->dn_pf_rule;
* mbuf statistics
*/
if (m->m_flags & M_EXT) {
- if (m->m_next != NULL)
+ if (m->m_next != NULL) {
ip6stat.ip6s_mext2m++;
- else
+ } else {
ip6stat.ip6s_mext1++;
+ }
} else {
-#define M2MMAX (sizeof (ip6stat.ip6s_m2m) / sizeof (ip6stat.ip6s_m2m[0]))
+#define M2MMAX (sizeof (ip6stat.ip6s_m2m) / sizeof (ip6stat.ip6s_m2m[0]))
if (m->m_next != NULL) {
if (m->m_pkthdr.pkt_flags & PKTF_LOOP) {
/* XXX */
/*
* Drop the packet if IPv6 operation is disabled on the interface.
*/
- if (inifp->if_eflags & IFEF_IPV6_DISABLED)
+ if (inifp->if_eflags & IFEF_IPV6_DISABLED) {
goto bad;
+ }
in6_ifstat_inc_na(inifp, ifs6_in_receive);
ip6stat.ip6s_total++;
if (m->m_next != NULL && m->m_pkthdr.len < MCLBYTES) {
struct mbuf *n;
- MGETHDR(n, M_DONTWAIT, MT_HEADER); /* MAC-OK */
- if (n)
+ MGETHDR(n, M_DONTWAIT, MT_HEADER); /* MAC-OK */
+ if (n) {
M_COPY_PKTHDR(n, m);
+ }
if (n && m->m_pkthdr.len > MHLEN) {
MCLGET(n, M_DONTWAIT);
if ((n->m_flags & M_EXT) == 0) {
n = NULL;
}
}
- if (n == NULL)
+ if (n == NULL) {
goto bad;
+ }
m_copydata(m, 0, m->m_pkthdr.len, mtod(n, caddr_t));
n->m_len = m->m_pkthdr.len;
m_freem(m);
m = n;
}
- IP6_EXTHDR_CHECK(m, 0, sizeof (struct ip6_hdr), { goto done; });
+ IP6_EXTHDR_CHECK(m, 0, sizeof(struct ip6_hdr), { goto done; });
- if (m->m_len < sizeof (struct ip6_hdr)) {
- if ((m = m_pullup(m, sizeof (struct ip6_hdr))) == 0) {
+ if (m->m_len < sizeof(struct ip6_hdr)) {
+ if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == 0) {
ip6stat.ip6s_toosmall++;
in6_ifstat_inc(inifp, ifs6_in_hdrerr);
goto done;
goto bad;
}
#endif
-#if IPFW2
- /*
- * Check with the firewall...
- */
- if (ip6_fw_enable && ip6_fw_chk_ptr) {
- u_short port = 0;
- /* If ipfw says divert, we have to just drop packet */
- /* use port as a dummy argument */
- if ((*ip6_fw_chk_ptr)(&ip6, NULL, &port, &m)) {
- m_freem(m);
- m = NULL;
- }
- if (!m)
- goto done;
- }
-#endif /* IPFW2 */
/*
* Naively assume we can attribute inbound data to the route we would
}
}
- /* for consistency */
- m->m_pkthdr.pkt_proto = ip6->ip6_nxt;
-
#if DUMMYNET
check_with_pf:
#endif /* DUMMYNET */
}
if (m->m_pkthdr.pkt_flags & PKTF_IFAINFO) {
- if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src))
+ if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src)) {
ip6->ip6_src.s6_addr16[1] =
htons(m->m_pkthdr.src_ifindex);
- if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst))
+ }
+ if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst)) {
ip6->ip6_dst.s6_addr16[1] =
htons(m->m_pkthdr.dst_ifindex);
+ }
} else {
- if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src))
+ if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src)) {
ip6->ip6_src.s6_addr16[1] = htons(inifp->if_index);
- if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst))
+ }
+ if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst)) {
ip6->ip6_dst.s6_addr16[1] = htons(inifp->if_index);
+ }
}
/*
* Multicast check
*/
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
- struct in6_multi *in6m = NULL;
+ struct in6_multi *in6m = NULL;
in6_ifstat_inc_na(inifp, ifs6_in_mcast);
/*
goto bad;
}
deliverifp = inifp;
- VERIFY(ia6 == NULL);
- goto hbhcheck;
- }
-
- /*
- * Unicast check
- *
- * Fast path: see if the target is ourselves.
- */
- lck_rw_lock_shared(&in6_ifaddr_rwlock);
- for (ia6 = in6_ifaddrs; ia6 != NULL; ia6 = ia6->ia_next) {
/*
- * No reference is held on the address, as we just need
- * to test for a few things while holding the RW lock.
+ * record dst address information into mbuf, if we don't have one yet.
+ * note that we are unable to record it, if the address is not listed
+ * as our interface address (e.g. multicast addresses, etc.)
*/
- if (IN6_ARE_ADDR_EQUAL(&ia6->ia_addr.sin6_addr, &ip6->ip6_dst))
- break;
- }
+ if (deliverifp != NULL) {
+ struct in6_ifaddr *ia6 = NULL;
- if (ia6 != NULL) {
- /*
- * For performance, test without acquiring the address lock;
- * a lot of things in the address are set once and never
- * changed (e.g. ia_ifp.)
- */
- if (!(ia6->ia6_flags & IN6_IFF_NOTREADY)) {
- /* this address is ready */
- ours = 1;
- deliverifp = ia6->ia_ifp;
- /*
- * record dst address information into mbuf.
- */
- (void) ip6_setdstifaddr_info(m, 0, ia6);
- lck_rw_done(&in6_ifaddr_rwlock);
- goto hbhcheck;
+ ia6 = in6_ifawithifp(deliverifp, &ip6->ip6_dst);
+ if (ia6 != NULL) {
+ (void) ip6_setdstifaddr_info(m, 0, ia6);
+ IFA_REMREF(&ia6->ia_ifa);
+ } else {
+ (void) ip6_setdstifaddr_info(m, inifp->if_index, NULL);
+ }
}
- lck_rw_done(&in6_ifaddr_rwlock);
- ia6 = NULL;
- /* address is not ready, so discard the packet. */
- nd6log((LOG_INFO, "%s: packet to an unready address %s->%s\n",
- __func__, ip6_sprintf(&ip6->ip6_src),
- ip6_sprintf(&ip6->ip6_dst)));
- goto bad;
- }
- lck_rw_done(&in6_ifaddr_rwlock);
-
- /*
- * Slow path: route lookup.
- */
- dst6 = SIN6(&rin6.ro_dst);
- dst6->sin6_len = sizeof (struct sockaddr_in6);
- dst6->sin6_family = AF_INET6;
- dst6->sin6_addr = ip6->ip6_dst;
-
- rtalloc_scoped_ign((struct route *)&rin6,
- RTF_PRCLONING, IFSCOPE_NONE);
- if (rin6.ro_rt != NULL)
- RT_LOCK_SPIN(rin6.ro_rt);
-
-#define rt6_key(r) (SIN6((r)->rt_nodes->rn_key))
-
- /*
- * Accept the packet if the forwarding interface to the destination
- * according to the routing table is the loopback interface,
- * unless the associated route has a gateway.
- * Note that this approach causes to accept a packet if there is a
- * route to the loopback interface for the destination of the packet.
- * But we think it's even useful in some situations, e.g. when using
- * a special daemon which wants to intercept the packet.
- *
- * XXX: some OSes automatically make a cloned route for the destination
- * of an outgoing packet. If the outgoing interface of the packet
- * is a loopback one, the kernel would consider the packet to be
- * accepted, even if we have no such address assinged on the interface.
- * We check the cloned flag of the route entry to reject such cases,
- * assuming that route entries for our own addresses are not made by
- * cloning (it should be true because in6_addloop explicitly installs
- * the host route). However, we might have to do an explicit check
- * while it would be less efficient. Or, should we rather install a
- * reject route for such a case?
- */
- if (rin6.ro_rt != NULL &&
- (rin6.ro_rt->rt_flags & (RTF_HOST|RTF_GATEWAY)) == RTF_HOST &&
-#if RTF_WASCLONED
- !(rin6.ro_rt->rt_flags & RTF_WASCLONED) &&
-#endif
- rin6.ro_rt->rt_ifp->if_type == IFT_LOOP) {
- ia6 = (struct in6_ifaddr *)rin6.ro_rt->rt_ifa;
+ goto hbhcheck;
+ } else {
/*
- * Packets to a tentative, duplicated, or somehow invalid
- * address must not be accepted.
- *
- * For performance, test without acquiring the address lock;
- * a lot of things in the address are set once and never
- * changed (e.g. ia_ifp.)
+ * Unicast check
*/
- if (!(ia6->ia6_flags & IN6_IFF_NOTREADY)) {
- /* this address is ready */
+ ip6_check_if_result_t check_if_result = IP6_CHECK_IF_NONE;
+ check_if_result = ip6_input_check_interface(m, ip6, inifp, &rin6, &deliverifp);
+ ASSERT(check_if_result != IP6_CHECK_IF_NONE);
+ if (check_if_result == IP6_CHECK_IF_OURS) {
ours = 1;
- deliverifp = ia6->ia_ifp; /* correct? */
- /*
- * record dst address information into mbuf.
- */
- (void) ip6_setdstifaddr_info(m, 0, ia6);
- RT_UNLOCK(rin6.ro_rt);
goto hbhcheck;
+ } else if (check_if_result == IP6_CHECK_IF_DROP) {
+ goto bad;
}
- RT_UNLOCK(rin6.ro_rt);
- ia6 = NULL;
- /* address is not ready, so discard the packet. */
- nd6log((LOG_INFO, "%s: packet to an unready address %s->%s\n",
- __func__, ip6_sprintf(&ip6->ip6_src),
- ip6_sprintf(&ip6->ip6_dst)));
- goto bad;
}
- if (rin6.ro_rt != NULL)
- RT_UNLOCK(rin6.ro_rt);
-
/*
* Now there is no reason to process the packet if it's not our own
* and we're not a router.
if (!ip6_forwarding) {
ip6stat.ip6s_cantforward++;
in6_ifstat_inc(inifp, ifs6_in_discard);
+ /*
+ * Raise a kernel event if the packet received on cellular
+ * interface is not intended for local host.
+ * For now limit it to ICMPv6 packets.
+ */
+ if (inifp->if_type == IFT_CELLULAR &&
+ ip6->ip6_nxt == IPPROTO_ICMPV6) {
+ in6_ifstat_inc(inifp, ifs6_cantfoward_icmp6);
+ }
goto bad;
}
hbhcheck:
- /*
- * record dst address information into mbuf, if we don't have one yet.
- * note that we are unable to record it, if the address is not listed
- * as our interface address (e.g. multicast addresses, etc.)
- */
- if (deliverifp != NULL && ia6 == NULL) {
- ia6 = in6_ifawithifp(deliverifp, &ip6->ip6_dst);
- if (ia6 != NULL) {
- (void) ip6_setdstifaddr_info(m, 0, ia6);
- IFA_REMREF(&ia6->ia_ifa);
- }
- }
-
/*
* Process Hop-by-Hop options header if it's contained.
* m may be modified in ip6_hopopts_input().
if (ip6->ip6_nxt == IPPROTO_HOPOPTS) {
struct ip6_hbh *hbh;
+ /*
+ * Mark the packet to imply that HBH option has been checked.
+ * This can only be true is the packet came in unfragmented
+ * or if the option is in the first fragment
+ */
+ m->m_pkthdr.pkt_flags |= PKTF_HBH_CHKED;
if (ip6_hopopts_input(&plen, &rtalert, &m, &off)) {
-#if 0 /* touches NULL pointer */
+#if 0 /* touches NULL pointer */
in6_ifstat_inc(inifp, ifs6_in_discard);
#endif
- goto done; /* m have already been freed */
+ goto done; /* m have already been freed */
}
/* adjust pointer */
in6_ifstat_inc(inifp, ifs6_in_discard);
in6_ifstat_inc(inifp, ifs6_in_hdrerr);
icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER,
- (caddr_t)&ip6->ip6_plen - (caddr_t)ip6);
+ (int)((caddr_t)&ip6->ip6_plen - (caddr_t)ip6));
goto done;
}
/* ip6_hopopts_input() ensures that mbuf is contiguous */
break;
}
}
- } else
+ } else {
nxt = ip6->ip6_nxt;
+ }
/*
* Check that the amount of data in the buffers
* Trim mbufs if longer than we expect.
* Drop packet if shorter than we expect.
*/
- if (m->m_pkthdr.len - sizeof (struct ip6_hdr) < plen) {
+ if (m->m_pkthdr.len - sizeof(struct ip6_hdr) < plen) {
ip6stat.ip6s_tooshort++;
in6_ifstat_inc(inifp, ifs6_in_truncated);
goto bad;
}
- if (m->m_pkthdr.len > sizeof (struct ip6_hdr) + plen) {
- /*
- * Invalidate hardware checksum info if ip6_adj_clear_hwcksum
- * is set; useful to handle buggy drivers. Note that this
- * should not be enabled by default, as we may get here due
- * to link-layer padding.
- */
- if (ip6_adj_clear_hwcksum &&
- (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) &&
- !(inifp->if_flags & IFF_LOOPBACK) &&
- !(m->m_pkthdr.pkt_flags & PKTF_LOOP)) {
- m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
- m->m_pkthdr.csum_data = 0;
- ip6stat.ip6s_adj_hwcsum_clr++;
- }
-
- ip6stat.ip6s_adj++;
- if (m->m_len == m->m_pkthdr.len) {
- m->m_len = sizeof (struct ip6_hdr) + plen;
- m->m_pkthdr.len = sizeof (struct ip6_hdr) + plen;
- } else {
- m_adj(m, sizeof (struct ip6_hdr) + plen -
- m->m_pkthdr.len);
- }
+ if (m->m_pkthdr.len > sizeof(struct ip6_hdr) + plen) {
+ ip6_input_adjust(m, ip6, plen, inifp);
}
/*
VERIFY(!ours ||
(m->m_pkthdr.pkt_flags & PKTF_PROXY_DST));
}
- if (!ours)
+ if (!ours) {
goto bad;
+ }
} else if (!ours) {
/*
* The unicast forwarding function might return the packet
* proxied nodes on different links (src is link-local, dst
* is target address.)
*/
- if ((m = ip6_forward(m, &rin6, 0)) == NULL)
+ if ((m = ip6_forward(m, &rin6, 0)) == NULL) {
goto done;
+ }
VERIFY(rin6.ro_rt != NULL);
VERIFY(m->m_pkthdr.pkt_flags & PKTF_PROXY_DST);
deliverifp = rin6.ro_rt->rt_ifp;
* we do it once for the outermost protocol, and we assume each
* protocol handler wouldn't mess with the alignment afterwards.
*/
- IP6_HDR_ALIGNMENT_FIXUP(m, inifp, return);
+ IP6_HDR_ALIGNMENT_FIXUP(m, inifp, return );
while (nxt != IPPROTO_DONE) {
struct ipfilter *filter;
int (*pr_input)(struct mbuf **, int *, int);
+ /*
+ * This would imply either IPPROTO_HOPOPTS was not the first
+ * option or it did not come in the first fragment.
+ */
+ if (nxt == IPPROTO_HOPOPTS &&
+ (m->m_pkthdr.pkt_flags & PKTF_HBH_CHKED) == 0) {
+ /*
+ * This implies that HBH option was not contained
+ * in the first fragment
+ */
+ ip6stat.ip6s_badoptions++;
+ goto bad;
+ }
+
if (ip6_hdrnestlimit && (++nest > ip6_hdrnestlimit)) {
ip6stat.ip6s_toomanyhdr++;
goto bad;
goto bad;
}
-
#if IPSEC
/*
* enforce IPsec policy checking if we are seeing last header.
/*
* Call IP filter
*/
- if (!TAILQ_EMPTY(&ipv6_filters)) {
+ if (!TAILQ_EMPTY(&ipv6_filters) && !IFNET_IS_INTCOPROC(inifp)) {
ipf_ref();
TAILQ_FOREACH(filter, &ipv6_filters, ipf_link) {
if (seen == 0) {
if ((struct ipfilter *)inject_ipfref ==
- filter)
+ filter) {
seen = 1;
+ }
} else if (filter->ipf_filter.ipf_input) {
errno_t result;
result = filter->ipf_filter.ipf_input(
- filter->ipf_filter.cookie,
- (mbuf_t *)&m, off, nxt);
+ filter->ipf_filter.cookie,
+ (mbuf_t *)&m, off, (uint8_t)nxt);
if (result == EJUSTRETURN) {
ipf_unref();
goto done;
m->m_pkthdr.src_iff = (ia6->ia6_flags & 0xffff);
} else {
m->m_pkthdr.src_iff = 0;
- m->m_pkthdr.src_ifindex = src_idx;
- if (src_idx != 0)
+ m->m_pkthdr.src_ifindex = (uint16_t)src_idx;
+ if (src_idx != 0) {
m->m_pkthdr.pkt_flags |= PKTF_IFAINFO;
+ }
}
}
m->m_pkthdr.dst_iff = (ia6->ia6_flags & 0xffff);
} else {
m->m_pkthdr.dst_iff = 0;
- m->m_pkthdr.dst_ifindex = dst_idx;
- if (dst_idx != 0)
+ m->m_pkthdr.dst_ifindex = (uint16_t)dst_idx;
+ if (dst_idx != 0) {
m->m_pkthdr.pkt_flags |= PKTF_IFAINFO;
+ }
}
}
{
VERIFY(m->m_flags & M_PKTHDR);
- if (!(m->m_pkthdr.pkt_flags & PKTF_IFAINFO))
- return (-1);
+ if (!(m->m_pkthdr.pkt_flags & PKTF_IFAINFO)) {
+ return -1;
+ }
- if (src_idx != NULL)
+ if (src_idx != NULL) {
*src_idx = m->m_pkthdr.src_ifindex;
+ }
- if (ia6f != NULL)
+ if (ia6f != NULL) {
*ia6f = m->m_pkthdr.src_iff;
+ }
- return (0);
+ return 0;
}
int
{
VERIFY(m->m_flags & M_PKTHDR);
- if (!(m->m_pkthdr.pkt_flags & PKTF_IFAINFO))
- return (-1);
+ if (!(m->m_pkthdr.pkt_flags & PKTF_IFAINFO)) {
+ return -1;
+ }
- if (dst_idx != NULL)
+ if (dst_idx != NULL) {
*dst_idx = m->m_pkthdr.dst_ifindex;
+ }
- if (ia6f != NULL)
+ if (ia6f != NULL) {
*ia6f = m->m_pkthdr.dst_iff;
+ }
- return (0);
+ return 0;
}
/*
u_int8_t *opt;
/* validation of the length of the header */
- IP6_EXTHDR_CHECK(m, off, sizeof (*hbh), return (-1));
+ IP6_EXTHDR_CHECK(m, off, sizeof(*hbh), return (-1));
hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off);
hbhlen = (hbh->ip6h_len + 1) << 3;
IP6_EXTHDR_CHECK(m, off, hbhlen, return (-1));
hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off);
off += hbhlen;
- hbhlen -= sizeof (struct ip6_hbh);
- opt = (u_int8_t *)hbh + sizeof (struct ip6_hbh);
+ hbhlen -= sizeof(struct ip6_hbh);
+ opt = (u_int8_t *)hbh + sizeof(struct ip6_hbh);
- if (ip6_process_hopopts(m, (u_int8_t *)hbh + sizeof (struct ip6_hbh),
- hbhlen, rtalertp, plenp) < 0)
- return (-1);
+ if (ip6_process_hopopts(m, (u_int8_t *)hbh + sizeof(struct ip6_hbh),
+ hbhlen, rtalertp, plenp) < 0) {
+ return -1;
+ }
*offp = off;
*mp = m;
- return (0);
+ return 0;
}
/*
* opthead + hbhlen is located in continuous memory region.
*/
int
-ip6_process_hopopts(m, opthead, hbhlen, rtalertp, plenp)
- struct mbuf *m;
- u_int8_t *opthead;
- int hbhlen;
- u_int32_t *rtalertp;
- u_int32_t *plenp;
+ip6_process_hopopts(struct mbuf *m, u_int8_t *opthead, int hbhlen,
+ u_int32_t *rtalertp, u_int32_t *plenp)
{
struct ip6_hdr *ip6;
int optlen = 0;
u_int8_t *opt = opthead;
u_int16_t rtalert_val;
u_int32_t jumboplen;
- const int erroff = sizeof (struct ip6_hdr) + sizeof (struct ip6_hbh);
+ const int erroff = sizeof(struct ip6_hdr) + sizeof(struct ip6_hbh);
for (; hbhlen > 0; hbhlen -= optlen, opt += optlen) {
switch (*opt) {
if (*(opt + 1) != IP6OPT_RTALERT_LEN - 2) {
/* XXX stat */
icmp6_error(m, ICMP6_PARAM_PROB,
- ICMP6_PARAMPROB_HEADER,
- erroff + opt + 1 - opthead);
- return (-1);
+ ICMP6_PARAMPROB_HEADER,
+ (int)(erroff + opt + 1 - opthead));
+ return -1;
}
optlen = IP6OPT_RTALERT_LEN;
bcopy((caddr_t)(opt + 2), (caddr_t)&rtalert_val, 2);
if (*(opt + 1) != IP6OPT_JUMBO_LEN - 2) {
/* XXX stat */
icmp6_error(m, ICMP6_PARAM_PROB,
- ICMP6_PARAMPROB_HEADER,
- erroff + opt + 1 - opthead);
- return (-1);
+ ICMP6_PARAMPROB_HEADER,
+ (int)(erroff + opt + 1 - opthead));
+ return -1;
}
optlen = IP6OPT_JUMBO_LEN;
if (ip6->ip6_plen) {
ip6stat.ip6s_badoptions++;
icmp6_error(m, ICMP6_PARAM_PROB,
- ICMP6_PARAMPROB_HEADER,
- erroff + opt - opthead);
- return (-1);
+ ICMP6_PARAMPROB_HEADER,
+ (int)(erroff + opt - opthead));
+ return -1;
}
/*
* We may see jumbolen in unaligned location, so
* we'd need to perform bcopy().
*/
- bcopy(opt + 2, &jumboplen, sizeof (jumboplen));
+ bcopy(opt + 2, &jumboplen, sizeof(jumboplen));
jumboplen = (u_int32_t)htonl(jumboplen);
#if 1
if (*plenp != 0) {
ip6stat.ip6s_badoptions++;
icmp6_error(m, ICMP6_PARAM_PROB,
- ICMP6_PARAMPROB_HEADER,
- erroff + opt + 2 - opthead);
- return (-1);
+ ICMP6_PARAMPROB_HEADER,
+ (int)(erroff + opt + 2 - opthead));
+ return -1;
}
#endif
if (jumboplen <= IPV6_MAXPACKET) {
ip6stat.ip6s_badoptions++;
icmp6_error(m, ICMP6_PARAM_PROB,
- ICMP6_PARAMPROB_HEADER,
- erroff + opt + 2 - opthead);
- return (-1);
+ ICMP6_PARAMPROB_HEADER,
+ (int)(erroff + opt + 2 - opthead));
+ return -1;
}
*plenp = jumboplen;
break;
- default: /* unknown option */
+ default: /* unknown option */
if (hbhlen < IP6OPT_MINLEN) {
ip6stat.ip6s_toosmall++;
goto bad;
optlen = ip6_unknown_opt(opt, m,
erroff + opt - opthead);
if (optlen == -1) {
- return (-1);
+ return -1;
}
optlen += 2;
break;
}
}
- return (0);
+ return 0;
bad:
m_freem(m);
- return (-1);
+ return -1;
}
/*
* is not continuous in order to return an ICMPv6 error.
*/
int
-ip6_unknown_opt(uint8_t *optp, struct mbuf *m, int off)
+ip6_unknown_opt(uint8_t *optp, struct mbuf *m, size_t off)
{
struct ip6_hdr *ip6;
switch (IP6OPT_TYPE(*optp)) {
case IP6OPT_TYPE_SKIP: /* ignore the option */
- return ((int)*(optp + 1));
+ return (int)*(optp + 1);
- case IP6OPT_TYPE_DISCARD: /* silently discard */
+ case IP6OPT_TYPE_DISCARD: /* silently discard */
m_freem(m);
- return (-1);
+ return -1;
case IP6OPT_TYPE_FORCEICMP: /* send ICMP even if multicasted */
ip6stat.ip6s_badoptions++;
- icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_OPTION, off);
- return (-1);
+ icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_OPTION, (int)off);
+ return -1;
case IP6OPT_TYPE_ICMP: /* send ICMP if not multicasted */
ip6stat.ip6s_badoptions++;
ip6 = mtod(m, struct ip6_hdr *);
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) ||
- (m->m_flags & (M_BCAST|M_MCAST))) {
+ (m->m_flags & (M_BCAST | M_MCAST))) {
m_freem(m);
} else {
icmp6_error(m, ICMP6_PARAM_PROB,
- ICMP6_PARAMPROB_OPTION, off);
+ ICMP6_PARAMPROB_OPTION, (int)off);
}
- return (-1);
+ return -1;
}
- m_freem(m); /* XXX: NOTREACHED */
- return (-1);
+ m_freem(m); /* XXX: NOTREACHED */
+ return -1;
}
/*
struct timeval tv;
getmicrotime(&tv);
- mp = sbcreatecontrol_mbuf((caddr_t)&tv, sizeof (tv),
+ mp = sbcreatecontrol_mbuf((caddr_t)&tv, sizeof(tv),
SCM_TIMESTAMP, SOL_SOCKET, mp);
- if (*mp == NULL)
- return (NULL);
+ if (*mp == NULL) {
+ return NULL;
+ }
}
if ((inp->inp_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0) {
uint64_t time;
time = mach_absolute_time();
- mp = sbcreatecontrol_mbuf((caddr_t)&time, sizeof (time),
+ mp = sbcreatecontrol_mbuf((caddr_t)&time, sizeof(time),
SCM_TIMESTAMP_MONOTONIC, SOL_SOCKET, mp);
- if (*mp == NULL)
- return (NULL);
+ if (*mp == NULL) {
+ return NULL;
+ }
+ }
+ if ((inp->inp_socket->so_options & SO_TIMESTAMP_CONTINUOUS) != 0) {
+ uint64_t time;
+
+ time = mach_continuous_time();
+ mp = sbcreatecontrol_mbuf((caddr_t)&time, sizeof(time),
+ SCM_TIMESTAMP_CONTINUOUS, SOL_SOCKET, mp);
+ if (*mp == NULL) {
+ return NULL;
+ }
}
if ((inp->inp_socket->so_flags & SOF_RECV_TRAFFIC_CLASS) != 0) {
int tc = m_get_traffic_class(m);
- mp = sbcreatecontrol_mbuf((caddr_t)&tc, sizeof (tc),
+ mp = sbcreatecontrol_mbuf((caddr_t)&tc, sizeof(tc),
SO_TRAFFIC_CLASS, SOL_SOCKET, mp);
- if (*mp == NULL)
- return (NULL);
+ if (*mp == NULL) {
+ return NULL;
+ }
}
+#define IS2292(inp, x, y) (((inp)->inp_flags & IN6P_RFC2292) ? (x) : (y))
if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) {
- if (v4only != NULL)
+ if (v4only != NULL) {
*v4only = 1;
- return (mp);
+ }
+
+ // Send ECN flags for v4-mapped addresses
+ if ((inp->inp_flags & IN6P_TCLASS) != 0) {
+ struct ip *ip_header = mtod(m, struct ip *);
+
+ int tclass = (int)(ip_header->ip_tos);
+ mp = sbcreatecontrol_mbuf((caddr_t)&tclass, sizeof(tclass),
+ IPV6_TCLASS, IPPROTO_IPV6, mp);
+ if (*mp == NULL) {
+ return NULL;
+ }
+ }
+
+ // Send IN6P_PKTINFO for v4-mapped address
+ if ((inp->inp_flags & IN6P_PKTINFO) != 0
+#if CONTENT_FILTER
+ /* Content Filter needs to see local address */
+ || (inp->inp_socket->so_cfil_db != NULL)
+#endif
+ ) {
+ struct in6_pktinfo pi6 = {
+ .ipi6_addr = IN6ADDR_V4MAPPED_INIT,
+ .ipi6_ifindex = (m && m->m_pkthdr.rcvif) ? m->m_pkthdr.rcvif->if_index : 0,
+ };
+
+ struct ip *ip_header = mtod(m, struct ip *);
+ bcopy(&ip_header->ip_dst, &pi6.ipi6_addr.s6_addr32[3], sizeof(struct in_addr));
+
+ mp = sbcreatecontrol_mbuf((caddr_t)&pi6,
+ sizeof(struct in6_pktinfo),
+ IS2292(inp, IPV6_2292PKTINFO, IPV6_PKTINFO),
+ IPPROTO_IPV6, mp);
+ if (*mp == NULL) {
+ return NULL;
+ }
+ }
+ return mp;
}
-#define IS2292(inp, x, y) (((inp)->inp_flags & IN6P_RFC2292) ? (x) : (y))
/* RFC 2292 sec. 5 */
- if ((inp->inp_flags & IN6P_PKTINFO) != 0) {
+ if ((inp->inp_flags & IN6P_PKTINFO) != 0
+#if CONTENT_FILTER
+ /* Content Filter needs to see local address */
+ || (inp->inp_socket->so_cfil_db != NULL)
+#endif
+ ) {
struct in6_pktinfo pi6;
- bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof (struct in6_addr));
- in6_clearscope(&pi6.ipi6_addr); /* XXX */
+ bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr));
+ in6_clearscope(&pi6.ipi6_addr); /* XXX */
pi6.ipi6_ifindex =
(m && m->m_pkthdr.rcvif) ? m->m_pkthdr.rcvif->if_index : 0;
mp = sbcreatecontrol_mbuf((caddr_t)&pi6,
- sizeof (struct in6_pktinfo),
+ sizeof(struct in6_pktinfo),
IS2292(inp, IPV6_2292PKTINFO, IPV6_PKTINFO),
IPPROTO_IPV6, mp);
- if (*mp == NULL)
- return (NULL);
+ if (*mp == NULL) {
+ return NULL;
+ }
}
if ((inp->inp_flags & IN6P_HOPLIMIT) != 0) {
int hlim = ip6->ip6_hlim & 0xff;
- mp = sbcreatecontrol_mbuf((caddr_t)&hlim, sizeof (int),
+ mp = sbcreatecontrol_mbuf((caddr_t)&hlim, sizeof(int),
IS2292(inp, IPV6_2292HOPLIMIT, IPV6_HOPLIMIT),
IPPROTO_IPV6, mp);
- if (*mp == NULL)
- return (NULL);
+ if (*mp == NULL) {
+ return NULL;
+ }
}
- if (v4only != NULL)
+ if (v4only != NULL) {
*v4only = 0;
- return (mp);
+ }
+ return mp;
}
int
*mp = NULL;
np = ip6_savecontrol_v4(in6p, m, mp, &v4only);
- if (np == NULL)
+ if (np == NULL) {
goto no_mbufs;
+ }
mp = np;
- if (v4only)
- return (0);
+ if (v4only) {
+ return 0;
+ }
if ((in6p->inp_flags & IN6P_TCLASS) != 0) {
u_int32_t flowinfo;
flowinfo >>= 20;
tclass = flowinfo & 0xff;
- mp = sbcreatecontrol_mbuf((caddr_t)&tclass, sizeof (tclass),
+ mp = sbcreatecontrol_mbuf((caddr_t)&tclass, sizeof(tclass),
IPV6_TCLASS, IPPROTO_IPV6, mp);
- if (*mp == NULL)
+ if (*mp == NULL) {
goto no_mbufs;
+ }
}
/*
}
if ((in6p->inp_flags & (IN6P_RTHDR | IN6P_DSTOPTS)) != 0) {
- int nxt = ip6->ip6_nxt, off = sizeof (struct ip6_hdr);
+ int nxt = ip6->ip6_nxt, off = sizeof(struct ip6_hdr);
/*
* Search for destination options headers or routing
* Note that the order of the headers remains in
* the chain of ancillary data.
*/
- while (1) { /* is explicit loop prevention necessary? */
+ while (1) { /* is explicit loop prevention necessary? */
struct ip6_ext *ip6e = NULL;
int elen;
goto loopend;
}
- if (off + sizeof (*ip6e) > m->m_len)
+ if (off + sizeof(*ip6e) > m->m_len) {
goto loopend;
+ }
ip6e = (struct ip6_ext *)(mtod(m, caddr_t) + off);
- if (nxt == IPPROTO_AH)
+ if (nxt == IPPROTO_AH) {
elen = (ip6e->ip6e_len + 2) << 2;
- else
+ } else {
elen = (ip6e->ip6e_len + 1) << 3;
- if (off + elen > m->m_len)
+ }
+ if (off + elen > m->m_len) {
goto loopend;
+ }
switch (nxt) {
case IPPROTO_DSTOPTS:
- if (!(in6p->inp_flags & IN6P_DSTOPTS))
+ if (!(in6p->inp_flags & IN6P_DSTOPTS)) {
break;
+ }
mp = sbcreatecontrol_mbuf((caddr_t)ip6e, elen,
IS2292(in6p, IPV6_2292DSTOPTS,
}
break;
case IPPROTO_ROUTING:
- if (!(in6p->inp_flags & IN6P_RTHDR))
+ if (!(in6p->inp_flags & IN6P_RTHDR)) {
break;
+ }
mp = sbcreatecontrol_mbuf((caddr_t)ip6e, elen,
IS2292(in6p, IPV6_2292RTHDR, IPV6_RTHDR),
* other cases).
*/
goto loopend;
-
}
/* proceed with the next header. */
loopend:
;
}
- return (0);
+ return 0;
no_mbufs:
ip6stat.ip6s_pktdropcntrl++;
/* XXX increment a stat to show the failure */
- return (ENOBUFS);
+ return ENOBUFS;
}
#undef IS2292
so = in6p->inp_socket;
- if (mtu == NULL)
+ if ((in6p->inp_flags & IN6P_MTU) == 0) {
+ return;
+ }
+
+ if (mtu == NULL) {
return;
+ }
#ifdef DIAGNOSTIC
- if (so == NULL) { /* I believe this is impossible */
+ if (so == NULL) { /* I believe this is impossible */
panic("ip6_notify_pmtu: socket is NULL");
/* NOTREACHED */
}
#endif
- bzero(&mtuctl, sizeof (mtuctl)); /* zero-clear for safety */
+ if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
+ (so->so_proto == NULL || so->so_proto->pr_protocol == IPPROTO_TCP)) {
+ return;
+ }
+
+ if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
+ !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &dst->sin6_addr)) {
+ return;
+ }
+
+ bzero(&mtuctl, sizeof(mtuctl)); /* zero-clear for safety */
mtuctl.ip6m_mtu = *mtu;
mtuctl.ip6m_addr = *dst;
- if (sa6_recoverscope(&mtuctl.ip6m_addr, TRUE))
+ if (sa6_recoverscope(&mtuctl.ip6m_addr, TRUE)) {
return;
+ }
- if ((m_mtu = sbcreatecontrol((caddr_t)&mtuctl, sizeof (mtuctl),
- IPV6_PATHMTU, IPPROTO_IPV6)) == NULL)
+ if ((m_mtu = sbcreatecontrol((caddr_t)&mtuctl, sizeof(mtuctl),
+ IPV6_PATHMTU, IPPROTO_IPV6)) == NULL) {
return;
+ }
if (sbappendaddr(&so->so_rcv, SA(dst), NULL, m_mtu, NULL) == 0) {
- m_freem(m_mtu);
- /* XXX: should count statistics */
- } else {
- sorwakeup(so);
+ return;
}
+ sorwakeup(so);
}
/*
* we develop `neater' mechanism to process extension headers.
*/
char *
-ip6_get_prevhdr(m, off)
- struct mbuf *m;
- int off;
+ip6_get_prevhdr(struct mbuf *m, int off)
{
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
- if (off == sizeof (struct ip6_hdr)) {
- return ((char *)&ip6->ip6_nxt);
+ if (off == sizeof(struct ip6_hdr)) {
+ return (char *)&ip6->ip6_nxt;
} else {
int len, nxt;
struct ip6_ext *ip6e = NULL;
nxt = ip6->ip6_nxt;
- len = sizeof (struct ip6_hdr);
+ len = sizeof(struct ip6_hdr);
while (len < off) {
ip6e = (struct ip6_ext *)(mtod(m, caddr_t) + len);
switch (nxt) {
case IPPROTO_FRAGMENT:
- len += sizeof (struct ip6_frag);
+ len += sizeof(struct ip6_frag);
break;
case IPPROTO_AH:
len += (ip6e->ip6e_len + 2) << 2;
}
nxt = ip6e->ip6e_nxt;
}
- if (ip6e)
- return ((char *)&ip6e->ip6e_nxt);
- else
- return (NULL);
+ if (ip6e) {
+ return (char *)&ip6e->ip6e_nxt;
+ } else {
+ return NULL;
+ }
}
}
/* just in case */
VERIFY(m != NULL);
- if ((m->m_flags & M_PKTHDR) == 0 || m->m_pkthdr.len < off)
- return (-1);
+ if ((m->m_flags & M_PKTHDR) == 0 || m->m_pkthdr.len < off) {
+ return -1;
+ }
switch (proto) {
case IPPROTO_IPV6:
- if (m->m_pkthdr.len < off + sizeof (ip6))
- return (-1);
- m_copydata(m, off, sizeof (ip6), (caddr_t)&ip6);
- if (nxtp)
+ if (m->m_pkthdr.len < off + sizeof(ip6)) {
+ return -1;
+ }
+ m_copydata(m, off, sizeof(ip6), (caddr_t)&ip6);
+ if (nxtp) {
*nxtp = ip6.ip6_nxt;
- off += sizeof (ip6);
- return (off);
+ }
+ off += sizeof(ip6);
+ return off;
case IPPROTO_FRAGMENT:
/*
* terminate parsing if it is not the first fragment,
* it does not make sense to parse through it.
*/
- if (m->m_pkthdr.len < off + sizeof (fh))
- return (-1);
- m_copydata(m, off, sizeof (fh), (caddr_t)&fh);
+ if (m->m_pkthdr.len < off + sizeof(fh)) {
+ return -1;
+ }
+ m_copydata(m, off, sizeof(fh), (caddr_t)&fh);
/* IP6F_OFF_MASK = 0xfff8(BigEndian), 0xf8ff(LittleEndian) */
- if (fh.ip6f_offlg & IP6F_OFF_MASK)
- return (-1);
- if (nxtp)
+ if (fh.ip6f_offlg & IP6F_OFF_MASK) {
+ return -1;
+ }
+ if (nxtp) {
*nxtp = fh.ip6f_nxt;
- off += sizeof (struct ip6_frag);
- return (off);
+ }
+ off += sizeof(struct ip6_frag);
+ return off;
case IPPROTO_AH:
- if (m->m_pkthdr.len < off + sizeof (ip6e))
- return (-1);
- m_copydata(m, off, sizeof (ip6e), (caddr_t)&ip6e);
- if (nxtp)
+ if (m->m_pkthdr.len < off + sizeof(ip6e)) {
+ return -1;
+ }
+ m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e);
+ if (nxtp) {
*nxtp = ip6e.ip6e_nxt;
+ }
off += (ip6e.ip6e_len + 2) << 2;
- return (off);
+ return off;
case IPPROTO_HOPOPTS:
case IPPROTO_ROUTING:
case IPPROTO_DSTOPTS:
- if (m->m_pkthdr.len < off + sizeof (ip6e))
- return (-1);
- m_copydata(m, off, sizeof (ip6e), (caddr_t)&ip6e);
- if (nxtp)
+ if (m->m_pkthdr.len < off + sizeof(ip6e)) {
+ return -1;
+ }
+ m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e);
+ if (nxtp) {
*nxtp = ip6e.ip6e_nxt;
+ }
off += (ip6e.ip6e_len + 1) << 3;
- return (off);
+ return off;
case IPPROTO_NONE:
case IPPROTO_ESP:
case IPPROTO_IPCOMP:
/* give up */
- return (-1);
+ return -1;
default:
- return (-1);
+ return -1;
}
-
- return (-1);
}
/*
}
while (1) {
newoff = ip6_nexthdr(m, off, proto, nxtp);
- if (newoff < 0)
- return (off);
- else if (newoff < off)
- return (-1); /* invalid */
- else if (newoff == off)
- return (newoff);
+ if (newoff < 0) {
+ return off;
+ } else if (newoff < off) {
+ return -1; /* invalid */
+ } else if (newoff == off) {
+ return newoff;
+ }
off = newoff;
proto = *nxtp;
}
}
+boolean_t
+ip6_pkt_has_ulp(struct mbuf *m)
+{
+ int off = 0, nxt = IPPROTO_NONE;
+
+ off = ip6_lasthdr(m, 0, IPPROTO_IPV6, &nxt);
+ if (off < 0 || m->m_pkthdr.len < off) {
+ return FALSE;
+ }
+
+ switch (nxt) {
+ case IPPROTO_TCP:
+ if (off + sizeof(struct tcphdr) > m->m_pkthdr.len) {
+ return FALSE;
+ }
+ break;
+ case IPPROTO_UDP:
+ if (off + sizeof(struct udphdr) > m->m_pkthdr.len) {
+ return FALSE;
+ }
+ break;
+ case IPPROTO_ICMPV6:
+ if (off + sizeof(uint32_t) > m->m_pkthdr.len) {
+ return FALSE;
+ }
+ break;
+ case IPPROTO_NONE:
+ return TRUE;
+ case IPPROTO_ESP:
+ return TRUE;
+ case IPPROTO_IPCOMP:
+ return TRUE;
+ default:
+ return FALSE;
+ }
+ return TRUE;
+}
+
struct ip6aux *
ip6_addaux(struct mbuf *m)
{
- struct m_tag *tag;
+ struct m_tag *tag;
/* Check if one is already allocated */
tag = m_tag_locate(m, KERNEL_MODULE_TAG_ID,
if (tag == NULL) {
/* Allocate a tag */
tag = m_tag_create(KERNEL_MODULE_TAG_ID, KERNEL_TAG_TYPE_INET6,
- sizeof (struct ip6aux), M_DONTWAIT, m);
+ sizeof(struct ip6aux), M_DONTWAIT, m);
/* Attach it to the mbuf */
if (tag) {
}
}
- return (tag ? (struct ip6aux *)(tag + 1) : NULL);
+ return tag ? (struct ip6aux *)(tag + 1) : NULL;
}
struct ip6aux *
ip6_findaux(struct mbuf *m)
{
- struct m_tag *tag;
+ struct m_tag *tag;
tag = m_tag_locate(m, KERNEL_MODULE_TAG_ID,
KERNEL_TAG_TYPE_INET6, NULL);
- return (tag ? (struct ip6aux *)(tag + 1) : NULL);
+ return tag ? (struct ip6aux *)(tag + 1) : NULL;
}
void
ip6_delaux(struct mbuf *m)
{
- struct m_tag *tag;
+ struct m_tag *tag;
tag = m_tag_locate(m, KERNEL_MODULE_TAG_ID,
KERNEL_TAG_TYPE_INET6, NULL);
void
ip6_drain(void)
{
- frag6_drain(); /* fragments */
- in6_rtqdrain(); /* protocol cloned routes */
- nd6_drain(NULL); /* cloned routes: ND6 */
+ frag6_drain(); /* fragments */
+ in6_rtqdrain(); /* protocol cloned routes */
+ nd6_drain(NULL); /* cloned routes: ND6 */
}
/*
* System control for IP6
*/
-u_char inet6ctlerrmap[PRC_NCMDS] = {
- 0, 0, 0, 0,
- 0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH,
- EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED,
- EMSGSIZE, EHOSTUNREACH, 0, 0,
- 0, 0, 0, 0,
+u_char inet6ctlerrmap[PRC_NCMDS] = {
+ 0, 0, 0, 0,
+ 0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH,
+ EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED,
+ EMSGSIZE, EHOSTUNREACH, 0, 0,
+ 0, 0, 0, 0,
ENOPROTOOPT
};
i = ip6_input_measure;
error = sysctl_handle_int(oidp, &i, 0, req);
- if (error || req->newptr == USER_ADDR_NULL)
+ if (error || req->newptr == USER_ADDR_NULL) {
goto done;
+ }
/* impose bounds */
if (i < 0 || i > 1) {
error = EINVAL;
}
ip6_input_measure = i;
done:
- return (error);
+ return error;
}
static int
i = ip6_input_measure_bins;
error = sysctl_handle_quad(oidp, &i, 0, req);
- if (error || req->newptr == USER_ADDR_NULL)
+ if (error || req->newptr == USER_ADDR_NULL) {
goto done;
+ }
/* validate data */
if (!net_perf_validate_bins(i)) {
error = EINVAL;
}
ip6_input_measure_bins = i;
done:
- return (error);
+ return error;
}
static int
sysctl_ip6_input_getperf SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp, arg1, arg2)
- if (req->oldptr == USER_ADDR_NULL)
- req->oldlen = (size_t)sizeof (struct ipstat);
+ if (req->oldptr == USER_ADDR_NULL) {
+ req->oldlen = (size_t)sizeof(struct net_perf);
+ }
- return (SYSCTL_OUT(req, &net_perf, MIN(sizeof (net_perf), req->oldlen)));
+ return SYSCTL_OUT(req, &net_perf, MIN(sizeof(net_perf), req->oldlen));
+}
+
+
+/*
+ * Initialize IPv6 source address hash table.
+ */
+static void
+in6_ifaddrhashtbl_init(void)
+{
+ int i, k, p;
+
+ if (in6_ifaddrhashtbl != NULL) {
+ return;
+ }
+
+ PE_parse_boot_argn("ina6ddr_nhash", &in6addr_nhash,
+ sizeof(in6addr_nhash));
+ if (in6addr_nhash == 0) {
+ in6addr_nhash = IN6ADDR_NHASH;
+ }
+
+ MALLOC(in6_ifaddrhashtbl, struct in6_ifaddrhashhead *,
+ in6addr_nhash * sizeof(*in6_ifaddrhashtbl),
+ M_IFADDR, M_WAITOK | M_ZERO);
+ if (in6_ifaddrhashtbl == NULL) {
+ panic("in6_ifaddrhashtbl allocation failed");
+ }
+
+ /*
+ * Generate the next largest prime greater than in6addr_nhash.
+ */
+ k = (in6addr_nhash % 2 == 0) ? in6addr_nhash + 1 : in6addr_nhash + 2;
+ for (;;) {
+ p = 1;
+ for (i = 3; i * i <= k; i += 2) {
+ if (k % i == 0) {
+ p = 0;
+ }
+ }
+ if (p == 1) {
+ break;
+ }
+ k += 2;
+ }
+ in6addr_hashp = k;
+}
+
+static int
+sysctl_ip6_checkinterface SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int error, i;
+
+ i = ip6_checkinterface;
+ error = sysctl_handle_int(oidp, &i, 0, req);
+ if (error || req->newptr == USER_ADDR_NULL) {
+ return error;
+ }
+
+ switch (i) {
+ case IP6_CHECKINTERFACE_WEAK_ES:
+ case IP6_CHECKINTERFACE_HYBRID_ES:
+ case IP6_CHECKINTERFACE_STRONG_ES:
+ if (ip6_checkinterface != i) {
+ ip6_checkinterface = i;
+ os_log(OS_LOG_DEFAULT, "%s: ip6_checkinterface is now %d\n",
+ __func__, ip6_checkinterface);
+ }
+ break;
+ default:
+ error = EINVAL;
+ break;
+ }
+ return error;
}
projects / apple / xnu.git / blobdiff