/*
- * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <net/if.h>
#include <net/route.h>
#include <net/dlil.h>
+#include <net/net_api_stats.h>
#include <net/net_osdep.h>
+#include <net/net_perf.h>
+#include <netinet/ip.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/ip_var.h>
#include <netinet6/in6_var.h>
#include <netinet/ip6.h>
#include <netinet/kpi_ipfilter_var.h>
+#include <netinet/in_tclass.h>
#include <netinet6/ip6protosw.h>
#include <netinet/icmp6.h>
#include <net/necp.h>
#endif /* NECP */
-#if CONFIG_MACF_NET
-#include <security/mac.h>
-#endif /* CONFIG_MACF_NET */
-
#if DUMMYNET
-#include <netinet6/ip6_fw.h>
-#include <netinet/ip_fw.h>
#include <netinet/ip_dummynet.h>
#endif /* DUMMYNET */
#include <net/pfvar.h>
#endif /* PF */
+static int sysctl_reset_ip6_output_stats SYSCTL_HANDLER_ARGS;
+static int sysctl_ip6_output_measure_bins SYSCTL_HANDLER_ARGS;
+static int sysctl_ip6_output_getperf SYSCTL_HANDLER_ARGS;
static int ip6_copyexthdr(struct mbuf **, caddr_t, int);
static void ip6_out_cksum_stats(int, u_int32_t);
static int ip6_insert_jumboopt(struct ip6_exthdrs *, u_int32_t);
static int ip6_insertfraghdr(struct mbuf *, struct mbuf *, int,
struct ip6_frag **);
static int ip6_getpmtu(struct route_in6 *, struct route_in6 *,
- struct ifnet *, struct in6_addr *, u_int32_t *, boolean_t *);
+ struct ifnet *, struct in6_addr *, u_int32_t *);
static int ip6_pcbopts(struct ip6_pktopts **, struct mbuf *, struct socket *,
struct sockopt *sopt);
static int ip6_pcbopt(int, u_char *, int, struct ip6_pktopts **, int);
static int ip6_splithdr(struct mbuf *, struct ip6_exthdrs *);
static void ip6_output_checksum(struct ifnet *, uint32_t, struct mbuf *,
int, uint32_t, uint32_t);
+extern int udp_ctloutput(struct socket *, struct sockopt *);
+static int ip6_fragment_packet(struct mbuf **m,
+ struct ip6_pktopts *opt, struct ip6_out_args * ip6oa,
+ struct ip6_exthdrs *exthdrsp, struct ifnet *ifp,
+ uint32_t mtu, uint32_t unfragpartlen, struct route_in6 *ro_pmtu,
+ int nxt0, uint32_t optlen);
+
+SYSCTL_DECL(_net_inet6_ip6);
+
+static int ip6_output_measure = 0;
+SYSCTL_PROC(_net_inet6_ip6, OID_AUTO, output_perf,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
+ &ip6_output_measure, 0, sysctl_reset_ip6_output_stats, "I", "Do time measurement");
+
+static uint64_t ip6_output_measure_bins = 0;
+SYSCTL_PROC(_net_inet6_ip6, OID_AUTO, output_perf_bins,
+ CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_output_measure_bins, 0,
+ sysctl_ip6_output_measure_bins, "I",
+ "bins for chaining performance data histogram");
+
+static net_perf_t net_perf;
+SYSCTL_PROC(_net_inet6_ip6, OID_AUTO, output_perf_data,
+ CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED,
+ 0, 0, sysctl_ip6_output_getperf, "S,net_perf",
+ "IP6 output performance data (struct net_perf, net/net_perf.h)");
-#define IM6O_TRACE_HIST_SIZE 32 /* size of trace history */
+#define IM6O_TRACE_HIST_SIZE 32 /* size of trace history */
/* For gdb */
__private_extern__ unsigned int im6o_trace_hist_size = IM6O_TRACE_HIST_SIZE;
struct ip6_moptions_dbg {
- struct ip6_moptions im6o; /* ip6_moptions */
- u_int16_t im6o_refhold_cnt; /* # of IM6O_ADDREF */
- u_int16_t im6o_refrele_cnt; /* # of IM6O_REMREF */
+ struct ip6_moptions im6o; /* ip6_moptions */
+ u_int16_t im6o_refhold_cnt; /* # of IM6O_ADDREF */
+ u_int16_t im6o_refrele_cnt; /* # of IM6O_REMREF */
/*
* Alloc and free callers.
*/
- ctrace_t im6o_alloc;
- ctrace_t im6o_free;
+ ctrace_t im6o_alloc;
+ ctrace_t im6o_free;
/*
* Circular lists of IM6O_ADDREF and IM6O_REMREF callers.
*/
- ctrace_t im6o_refhold[IM6O_TRACE_HIST_SIZE];
- ctrace_t im6o_refrele[IM6O_TRACE_HIST_SIZE];
+ ctrace_t im6o_refhold[IM6O_TRACE_HIST_SIZE];
+ ctrace_t im6o_refrele[IM6O_TRACE_HIST_SIZE];
};
#if DEBUG
-static unsigned int im6o_debug = 1; /* debugging (enabled) */
+static unsigned int im6o_debug = 1; /* debugging (enabled) */
#else
-static unsigned int im6o_debug; /* debugging (disabled) */
+static unsigned int im6o_debug; /* debugging (disabled) */
#endif /* !DEBUG */
-static unsigned int im6o_size; /* size of zone element */
-static struct zone *im6o_zone; /* zone for ip6_moptions */
-
-#define IM6O_ZONE_MAX 64 /* maximum elements in zone */
-#define IM6O_ZONE_NAME "ip6_moptions" /* zone name */
-
-SYSCTL_DECL(_net_inet6_ip6);
-
-static int ip6_maxchainsent = 0;
-SYSCTL_INT(_net_inet6_ip6, OID_AUTO, maxchainsent,
- CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_maxchainsent, 0,
- "use dlil_output_list");
+static struct zone *im6o_zone; /* zone for ip6_moptions */
+#define IM6O_ZONE_NAME "ip6_moptions" /* zone name */
/*
- * XXX we don't handle mbuf chains yet in nd6_output() so ip6_output_list() only
- * walks through the packet chain and sends each mbuf separately.
+ * ip6_output() calls ip6_output_list() to do the work
*/
int
-ip6_output_list(struct mbuf *m0, int packetlist, struct ip6_pktopts *opt,
+ip6_output(struct mbuf *m0, struct ip6_pktopts *opt,
struct route_in6 *ro, int flags, struct ip6_moptions *im6o,
struct ifnet **ifpp, struct ip6_out_args *ip6oa)
{
-#pragma unused(packetlist)
- struct mbuf *m = m0, *nextpkt;
- int error = 0;
-
- while (m != NULL) {
- /*
- * Break the chain before calling ip6_output() and free the
- * mbufs if there was an error.
- */
- nextpkt = m->m_nextpkt;
- m->m_nextpkt = NULL;
- error = ip6_output(m, opt, ro, flags, im6o, ifpp, ip6oa);
- if (error != 0) {
- if (nextpkt != NULL)
- m_freem_list(nextpkt);
- return (error);
- }
- m = nextpkt;
- }
-
- return (error);
+ return ip6_output_list(m0, 0, opt, ro, flags, im6o, ifpp, ip6oa);
}
/*
- * IP6 output. The packet in mbuf chain m contains a skeletal IP6
+ * IP6 output. Each packet in mbuf chain m contains a skeletal IP6
* header (with pri, len, nxt, hlim, src, dst).
* This function may modify ver and hlim only.
* The mbuf chain containing the packet will be freed.
* which is rt_rmx.rmx_mtu.
*/
int
-ip6_output(struct mbuf *m0, struct ip6_pktopts *opt, struct route_in6 *ro,
- int flags, struct ip6_moptions *im6o, struct ifnet **ifpp,
- struct ip6_out_args *ip6oa)
+ip6_output_list(struct mbuf *m0, int packetchain, struct ip6_pktopts *opt,
+ struct route_in6 *ro, int flags, struct ip6_moptions *im6o,
+ struct ifnet **ifpp, struct ip6_out_args *ip6oa)
{
struct ip6_hdr *ip6;
u_char *nexthdrp;
- struct ifnet *ifp = NULL, *origifp = NULL; /* refcnt'd */
+ struct ifnet *ifp = NULL, *origifp = NULL; /* refcnt'd */
+ struct ifnet **ifpp_save = ifpp;
struct mbuf *m, *mprev;
- int hlen, tlen, len, off, nxt0;
+ struct mbuf *sendchain = NULL, *sendchain_last = NULL;
+ struct mbuf *inputchain = NULL;
+ int nxt0 = 0;
struct route_in6 *ro_pmtu = NULL;
struct rtentry *rt = NULL;
- struct sockaddr_in6 *dst, src_sa, dst_sa;
+ struct sockaddr_in6 *dst = NULL, src_sa, dst_sa;
int error = 0;
struct in6_ifaddr *ia = NULL, *src_ia = NULL;
- u_int32_t mtu;
- boolean_t alwaysfrag = FALSE;
+ u_int32_t mtu = 0;
u_int32_t optlen = 0, plen = 0, unfragpartlen = 0;
struct ip6_rthdr *rh;
struct in6_addr finaldst;
ipfilter_t inject_filter_ref;
struct ipf_pktopts *ippo = NULL;
struct flowadv *adv = NULL;
+ uint32_t pktcnt = 0;
+ uint32_t packets_processed = 0;
+ struct timeval start_tv;
+#if PF
+ boolean_t skip_pf = (ip6oa != NULL) &&
+ (ip6oa->ip6oa_flags & IP6OAF_SKIP_PF);
+#endif
+
#if DUMMYNET
struct m_tag *tag;
struct ip6_out_args saved_ip6oa;
struct ip_fw_args args;
#endif /* DUMMYNET */
} ip6obz;
-#define ipf_pktopts ip6obz.ipf_pktopts
-#define exthdrs ip6obz.exthdrs
-#define ip6route ip6obz.ip6route
-#define ipsec_state ip6obz.ipsec_state
-#define necp_route ip6obz.necp_route
-#define saved_route ip6obz.saved_route
-#define saved_ro_pmtu ip6obz.saved_ro_pmtu
-#define args ip6obz.args
+#define ipf_pktopts ip6obz.ipf_pktopts
+#define exthdrs ip6obz.exthdrs
+#define ip6route ip6obz.ip6route
+#define ipsec_state ip6obz.ipsec_state
+#define necp_route ip6obz.necp_route
+#define saved_route ip6obz.saved_route
+#define saved_ro_pmtu ip6obz.saved_ro_pmtu
+#define args ip6obz.args
union {
struct {
boolean_t select_srcif : 1;
boolean_t hdrsplit : 1;
+ boolean_t route_selected : 1;
boolean_t dontfrag : 1;
#if IPSEC
boolean_t needipsec : 1;
uint32_t raw;
} ip6obf = { .raw = 0 };
+ if (ip6_output_measure) {
+ net_perf_start_time(&net_perf, &start_tv);
+ }
+
VERIFY(m0->m_flags & M_PKTHDR);
/* zero out {saved_route, saved_ro_pmtu, ip6route, exthdrs, args} */
- bzero(&ip6obz, sizeof (ip6obz));
+ bzero(&ip6obz, sizeof(ip6obz));
#if DUMMYNET
- if (SLIST_EMPTY(&m0->m_pkthdr.tags))
+ if (SLIST_EMPTY(&m0->m_pkthdr.tags)) {
goto tags_done;
+ }
/* Grab info from mtags prepended to the chain */
if ((tag = m_tag_locate(m0, 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);
+ /*
+ * ip6_output_list() cannot handle chains of packets reinjected
+ * by dummynet. The same restriction applies to
+ * ip_output_list().
+ */
+ VERIFY(0 == packetchain);
+
+ dn_tag = (struct dn_pkt_tag *)(tag + 1);
args.fwa_pf_rule = dn_tag->dn_pf_rule;
- bcopy(&dn_tag->dn_dst6, &dst_buf, sizeof (dst_buf));
+ bcopy(&dn_tag->dn_dst6, &dst_buf, sizeof(dst_buf));
dst = &dst_buf;
ifp = dn_tag->dn_ifp;
- if (ifp != NULL)
+ if (ifp != NULL) {
ifnet_reference(ifp);
+ }
flags = dn_tag->dn_flags;
if (dn_tag->dn_flags & IPV6_OUTARGS) {
saved_ip6oa = dn_tag->dn_ip6oa;
saved_ro_pmtu = dn_tag->dn_ro6_pmtu;
ro_pmtu = &saved_ro_pmtu;
origifp = dn_tag->dn_origifp;
- if (origifp != NULL)
+ if (origifp != NULL) {
ifnet_reference(origifp);
+ }
mtu = dn_tag->dn_mtu;
- alwaysfrag = (dn_tag->dn_alwaysfrag != 0);
unfragpartlen = dn_tag->dn_unfragpartlen;
- bcopy(&dn_tag->dn_exthdrs, &exthdrs, sizeof (exthdrs));
+ bcopy(&dn_tag->dn_exthdrs, &exthdrs, sizeof(exthdrs));
m_tag_delete(m0, tag);
}
#endif /* DUMMYNET */
m = m0;
- m->m_pkthdr.pkt_flags &= ~(PKTF_LOOP|PKTF_IFAINFO);
#if IPSEC
if (ipsec_bypass == 0) {
}
/* If packet is bound to an interface, check bound policies */
if ((flags & IPV6_OUTARGS) &&
- (ip6oa->ip6oa_flags & IPOAF_BOUND_IF) &&
- ip6oa->ip6oa_boundif != IFSCOPE_NONE) {
+ (ip6oa->ip6oa_flags & IP6OAF_BOUND_IF) &&
+ ip6oa->ip6oa_boundif != IFSCOPE_NONE) {
/* ip6obf.noipsec is a bitfield, use temp integer */
int noipsec = 0;
if (ipsec6_getpolicybyinterface(m, IPSEC_DIR_OUTBOUND,
- flags, ip6oa, &noipsec, &sp) != 0)
+ flags, ip6oa, &noipsec, &sp) != 0) {
goto bad;
+ }
ip6obf.noipsec = (noipsec != 0);
}
}
#endif /* IPSEC */
-
- ip6 = mtod(m, struct ip6_hdr *);
- nxt0 = ip6->ip6_nxt;
- finaldst = ip6->ip6_dst;
- inject_filter_ref = ipf_get_inject_filter(m);
+
ippo = &ipf_pktopts;
- if (ip6_doscopedroute && (flags & IPV6_OUTARGS)) {
+ if (flags & IPV6_OUTARGS) {
/*
* In the forwarding case, only the ifscope value is used,
* as source interface selection doesn't take place.
*/
if ((ip6obf.select_srcif = (!(flags & (IPV6_FORWARDING |
IPV6_UNSPECSRC | IPV6_FLAG_NOSRCIFSEL)) &&
- (ip6oa->ip6oa_flags & IP6OAF_SELECT_SRCIF))))
+ (ip6oa->ip6oa_flags & IP6OAF_SELECT_SRCIF)))) {
ipf_pktopts.ippo_flags |= IPPOF_SELECT_SRCIF;
+ }
if ((ip6oa->ip6oa_flags & IP6OAF_BOUND_IF) &&
ip6oa->ip6oa_boundif != IFSCOPE_NONE) {
(ip6oa->ip6oa_boundif << IPPOF_SHIFT_IFSCOPE));
}
- if (ip6oa->ip6oa_flags & IP6OAF_BOUND_SRCADDR)
+ if (ip6oa->ip6oa_flags & IP6OAF_BOUND_SRCADDR) {
ipf_pktopts.ippo_flags |= IPPOF_BOUND_SRCADDR;
+ }
} else {
ip6obf.select_srcif = FALSE;
if (flags & IPV6_OUTARGS) {
}
if (flags & IPV6_OUTARGS) {
- if (ip6oa->ip6oa_flags & IP6OAF_NO_CELLULAR)
+ if (ip6oa->ip6oa_flags & IP6OAF_NO_CELLULAR) {
ipf_pktopts.ippo_flags |= IPPOF_NO_IFT_CELLULAR;
- if (ip6oa->ip6oa_flags & IP6OAF_NO_EXPENSIVE)
+ }
+ if (ip6oa->ip6oa_flags & IP6OAF_NO_EXPENSIVE) {
ipf_pktopts.ippo_flags |= IPPOF_NO_IFF_EXPENSIVE;
+ }
+ if (ip6oa->ip6oa_flags & IP6OAF_NO_CONSTRAINED) {
+ ipf_pktopts.ippo_flags |= IPPOF_NO_IFF_CONSTRAINED;
+ }
adv = &ip6oa->ip6oa_flowadv;
adv->code = FADV_SUCCESS;
ip6oa->ip6oa_retflags = 0;
}
+ /*
+ * Clear out ifpp to be filled in after determining route. ifpp_save is
+ * used to keep old value to release reference properly and dtrace
+ * ipsec tunnel traffic properly.
+ */
+ if (ifpp != NULL && *ifpp != NULL) {
+ *ifpp = NULL;
+ }
+
#if DUMMYNET
if (args.fwa_pf_rule) {
ip6 = mtod(m, struct ip6_hdr *);
- VERIFY(ro != NULL); /* ro == saved_route */
+ VERIFY(ro != NULL); /* ro == saved_route */
goto check_with_pf;
}
#endif /* DUMMYNET */
-#define MAKE_EXTHDR(hp, mp) do { \
- if (hp != NULL) { \
- struct ip6_ext *eh = (struct ip6_ext *)(hp); \
- error = ip6_copyexthdr((mp), (caddr_t)(hp), \
- ((eh)->ip6e_len + 1) << 3); \
- if (error) \
- goto freehdrs; \
- } \
+#if NECP
+ /*
+ * Since all packets are assumed to come from same socket, necp lookup
+ * only needs to happen once per function entry.
+ */
+ necp_matched_policy_id = necp_ip6_output_find_policy_match(m, flags,
+ (flags & IPV6_OUTARGS) ? ip6oa : NULL, ro ? ro->ro_rt : NULL, &necp_result,
+ &necp_result_parameter);
+#endif /* NECP */
+
+ /*
+ * If a chain was passed in, prepare for ther first iteration. For all
+ * other iterations, this work will be done at evaluateloop: label.
+ */
+ if (packetchain) {
+ /*
+ * Remove m from the chain during processing to avoid
+ * accidental frees on entire list.
+ */
+ inputchain = m->m_nextpkt;
+ m->m_nextpkt = NULL;
+ }
+
+loopit:
+ packets_processed++;
+ m->m_pkthdr.pkt_flags &= ~(PKTF_LOOP | PKTF_IFAINFO);
+ ip6 = mtod(m, struct ip6_hdr *);
+ nxt0 = ip6->ip6_nxt;
+ finaldst = ip6->ip6_dst;
+ ip6obf.hdrsplit = FALSE;
+ ro_pmtu = NULL;
+
+ if (!SLIST_EMPTY(&m->m_pkthdr.tags)) {
+ inject_filter_ref = ipf_get_inject_filter(m);
+ } else {
+ inject_filter_ref = NULL;
+ }
+
+#define MAKE_EXTHDR(hp, mp) do { \
+ if (hp != NULL) { \
+ struct ip6_ext *eh = (struct ip6_ext *)(hp); \
+ error = ip6_copyexthdr((mp), (caddr_t)(hp), \
+ ((eh)->ip6e_len + 1) << 3); \
+ if (error) \
+ goto freehdrs; \
+ } \
} while (0)
if (opt != NULL) {
#undef MAKE_EXTHDR
#if NECP
- necp_matched_policy_id = necp_ip6_output_find_policy_match (m, flags, (flags & IPV6_OUTARGS) ? ip6oa : NULL,
- &necp_result, &necp_result_parameter);
if (necp_matched_policy_id) {
necp_mark_packet_from_ip(m, necp_matched_policy_id);
+
switch (necp_result) {
- case NECP_KERNEL_POLICY_RESULT_PASS:
+ case NECP_KERNEL_POLICY_RESULT_PASS:
+ if (necp_result_parameter.pass_flags & NECP_KERNEL_POLICY_PASS_NO_SKIP_IPSEC) {
+ break;
+ }
+ goto skip_ipsec;
+ case NECP_KERNEL_POLICY_RESULT_DROP:
+ error = EHOSTUNREACH;
+ ip6stat.ip6s_necp_policy_drop++;
+ goto freehdrs;
+ case NECP_KERNEL_POLICY_RESULT_SOCKET_DIVERT:
+ /*
+ * Flow divert packets should be blocked at the IP
+ * layer.
+ */
+ error = EHOSTUNREACH;
+ ip6stat.ip6s_necp_policy_drop++;
+ goto freehdrs;
+ case NECP_KERNEL_POLICY_RESULT_IP_TUNNEL: {
+ /*
+ * Verify that the packet is being routed to the tunnel
+ */
+ struct ifnet *policy_ifp =
+ necp_get_ifnet_from_result_parameter(
+ &necp_result_parameter);
+
+ /*
+ * Update the QOS marking policy if
+ * 1. upper layer asks it to do so
+ * 2. net_qos_policy_restricted is not set
+ * 3. qos_marking_gencount doesn't match necp_kernel_socket_policies_gencount (checked in necp_lookup_current_qos_marking)
+ */
+ if (ip6oa != NULL && (ip6oa->ip6oa_flags & IP6OAF_REDO_QOSMARKING_POLICY) &&
+ net_qos_policy_restricted != 0) {
+ bool qos_marking = (ip6oa->ip6oa_flags & IP6OAF_QOSMARKING_ALLOWED) != 0;
+ qos_marking = necp_lookup_current_qos_marking(&ip6oa->qos_marking_gencount, NULL, policy_ifp, necp_result_parameter.route_rule_id, qos_marking);
+ if (qos_marking) {
+ ip6oa->ip6oa_flags |= IP6OAF_QOSMARKING_ALLOWED;
+ } else {
+ ip6oa->ip6oa_flags &= ~IP6OAF_QOSMARKING_ALLOWED;
+ }
+ }
+
+ if (policy_ifp == ifp) {
goto skip_ipsec;
- case NECP_KERNEL_POLICY_RESULT_DROP:
- case NECP_KERNEL_POLICY_RESULT_SOCKET_DIVERT:
- /* Flow divert packets should be blocked at the IP layer */
- error = EHOSTUNREACH;
- goto bad;
- case NECP_KERNEL_POLICY_RESULT_IP_TUNNEL: {
- /* Verify that the packet is being routed to the tunnel */
- struct ifnet *policy_ifp = necp_get_ifnet_from_result_parameter(&necp_result_parameter);
- if (policy_ifp == ifp) {
+ } else {
+ if (necp_packet_can_rebind_to_ifnet(m,
+ policy_ifp, (struct route *)&necp_route,
+ AF_INET6)) {
+ /*
+ * Set scoped index to the tunnel
+ * interface, since it is compatible
+ * with the packet. This will only work
+ * for callers who pass IPV6_OUTARGS,
+ * but that covers all of the clients
+ * we care about today.
+ */
+ if (flags & IPV6_OUTARGS) {
+ ip6oa->ip6oa_boundif =
+ policy_ifp->if_index;
+ ip6oa->ip6oa_flags |=
+ IP6OAF_BOUND_IF;
+ }
+ if (opt != NULL
+ && opt->ip6po_pktinfo != NULL) {
+ opt->ip6po_pktinfo->
+ ipi6_ifindex =
+ policy_ifp->if_index;
+ }
+ ro = &necp_route;
goto skip_ipsec;
} else {
- if (necp_packet_can_rebind_to_ifnet(m, policy_ifp, (struct route *)&necp_route, AF_INET6)) {
- /* Set scoped index to the tunnel interface, since it is compatible with the packet */
- /* This will only work for callers who pass IPV6_OUTARGS, but that covers all of the
- clients we care about today */
- if (flags & IPV6_OUTARGS) {
- ip6oa->ip6oa_boundif = policy_ifp->if_index;
- ip6oa->ip6oa_flags |= IP6OAF_BOUND_IF;
- }
- if (opt != NULL && opt->ip6po_pktinfo != NULL) {
- opt->ip6po_pktinfo->ipi6_ifindex = policy_ifp->if_index;
- }
- ro = &necp_route;
- goto skip_ipsec;
- } else {
- error = ENETUNREACH;
- goto bad;
- }
+ error = ENETUNREACH;
+ ip6stat.ip6s_necp_policy_drop++;
+ goto freehdrs;
}
- break;
}
- default:
- break;
+ }
+ default:
+ break;
}
}
#endif /* NECP */
-
+
#if IPSEC
- if (ipsec_bypass != 0 || ip6obf.noipsec)
+ if (ipsec_bypass != 0 || ip6obf.noipsec) {
goto skip_ipsec;
+ }
if (sp == NULL) {
/* get a security policy for this packet */
if (so != NULL) {
sp = ipsec6_getpolicybysock(m, IPSEC_DIR_OUTBOUND,
- so, &error);
+ so, &error);
} else {
sp = ipsec6_getpolicybyaddr(m, IPSEC_DIR_OUTBOUND,
- 0, &error);
+ 0, &error);
}
if (sp == NULL) {
IPSEC_STAT_INCREMENT(ipsec6stat.out_inval);
* Keep the length of the unfragmentable part for fragmentation.
*/
optlen = 0;
- if (exthdrs.ip6e_hbh != NULL)
+ if (exthdrs.ip6e_hbh != NULL) {
optlen += exthdrs.ip6e_hbh->m_len;
- if (exthdrs.ip6e_dest1 != NULL)
+ }
+ if (exthdrs.ip6e_dest1 != NULL) {
optlen += exthdrs.ip6e_dest1->m_len;
- if (exthdrs.ip6e_rthdr != NULL)
+ }
+ if (exthdrs.ip6e_rthdr != NULL) {
optlen += exthdrs.ip6e_rthdr->m_len;
- unfragpartlen = optlen + sizeof (struct ip6_hdr);
+ }
+ unfragpartlen = optlen + sizeof(struct ip6_hdr);
/* NOTE: we don't add AH/ESP length here. do that later. */
- if (exthdrs.ip6e_dest2 != NULL)
+ if (exthdrs.ip6e_dest2 != NULL) {
optlen += exthdrs.ip6e_dest2->m_len;
+ }
/*
* If we need IPsec, or there is at least one extension header,
*/
if ((
#if IPSEC
- ip6obf.needipsec ||
+ ip6obf.needipsec ||
#endif /* IPSEC */
- optlen) && !ip6obf.hdrsplit) {
+ optlen) && !ip6obf.hdrsplit) {
if ((error = ip6_splithdr(m, &exthdrs)) != 0) {
m = NULL;
goto freehdrs;
/* adjust mbuf packet header length */
m->m_pkthdr.len += optlen;
- plen = m->m_pkthdr.len - sizeof (*ip6);
+ plen = m->m_pkthdr.len - sizeof(*ip6);
/* If this is a jumbo payload, insert a jumbo payload option. */
if (plen > IPV6_MAXPACKET) {
}
/* adjust pointer */
ip6 = mtod(m, struct ip6_hdr *);
- if ((error = ip6_insert_jumboopt(&exthdrs, plen)) != 0)
+ if ((error = ip6_insert_jumboopt(&exthdrs, plen)) != 0) {
goto freehdrs;
+ }
ip6->ip6_plen = 0;
} else {
- ip6->ip6_plen = htons(plen);
+ ip6->ip6_plen = htons((uint16_t)plen);
}
/*
* Concatenate headers and fill in next header fields.
ip6->ip6_nxt = IPPROTO_DSTOPTS;
}
-#define MAKE_CHAIN(m, mp, p, i) do { \
- if (m != NULL) { \
- if (!ip6obf.hdrsplit) { \
- panic("assumption failed: hdr not split"); \
- /* NOTREACHED */ \
- } \
- *mtod((m), u_char *) = *(p); \
- *(p) = (i); \
- p = mtod((m), u_char *); \
- (m)->m_next = (mp)->m_next; \
- (mp)->m_next = (m); \
- (mp) = (m); \
- } \
+#define MAKE_CHAIN(m, mp, p, i) do { \
+ if (m != NULL) { \
+ if (!ip6obf.hdrsplit) { \
+ panic("assumption failed: hdr not split"); \
+ /* NOTREACHED */ \
+ } \
+ *mtod((m), u_char *) = *(p); \
+ *(p) = (i); \
+ p = mtod((m), u_char *); \
+ (m)->m_next = (mp)->m_next; \
+ (mp)->m_next = (m); \
+ (mp) = (m); \
+ } \
} while (0)
/*
* result: IPv6 hbh dest1 rthdr dest2 payload
MAKE_CHAIN(exthdrs.ip6e_dest1, mprev, nexthdrp, IPPROTO_DSTOPTS);
MAKE_CHAIN(exthdrs.ip6e_rthdr, mprev, nexthdrp, IPPROTO_ROUTING);
+ /* It is no longer safe to free the pointers in exthdrs. */
+ exthdrs.merged = TRUE;
+
#undef MAKE_CHAIN
#if IPSEC
- if (ip6obf.needipsec && (m->m_pkthdr.csum_flags & CSUM_DELAY_IPV6_DATA))
+ if (ip6obf.needipsec && (m->m_pkthdr.csum_flags & CSUM_DELAY_IPV6_DATA)) {
in6_delayed_cksum_offset(m, 0, optlen, nxt0);
+ }
#endif /* IPSEC */
- if (!TAILQ_EMPTY(&ipv6_filters)) {
- struct ipfilter *filter;
+ if (!TAILQ_EMPTY(&ipv6_filters) &&
+ !((flags & IPV6_OUTARGS) &&
+ (ip6oa->ip6oa_flags & IP6OAF_INTCOPROC_ALLOWED)
+#if NECP
+ && !necp_packet_should_skip_filters(m)
+#endif // NECP
+ )) {
+ struct ipfilter *filter;
int seen = (inject_filter_ref == NULL);
int fixscope = 0;
(ip6->ip6_dst.s6_addr16[1] == 0) && (ro != NULL)) {
fixscope = 1;
ip6->ip6_dst.s6_addr16[1] =
- htons(ro->ro_dst.sin6_scope_id);
+ htons((uint16_t)ro->ro_dst.sin6_scope_id);
}
ipf_ref();
*/
if (seen == 0) {
if ((struct ipfilter *)inject_filter_ref ==
- filter)
+ filter) {
seen = 1;
+ }
} else if (filter->ipf_filter.ipf_output != NULL) {
errno_t result;
result = filter->ipf_filter.ipf_output(
- filter->ipf_filter.cookie,
- (mbuf_t *)&m, ippo);
+ filter->ipf_filter.cookie,
+ (mbuf_t *)&m, ippo);
if (result == EJUSTRETURN) {
ipf_unref();
- goto done;
+ m = NULL;
+ goto evaluateloop;
}
if (result != 0) {
ipf_unref();
ip6 = mtod(m, struct ip6_hdr *);
/* Hack: cleanup embedded scope_id if we put it there */
- if (fixscope)
+ if (fixscope) {
ip6->ip6_dst.s6_addr16[1] = 0;
+ }
}
#if IPSEC
if (ip6obf.needipsec) {
- int segleft_org;
+ uint8_t segleft_org;
/*
* pointers after IPsec headers are not valid any more.
default:
printf("ip6_output (ipsec): error code %d\n",
error);
- /* FALLTHRU */
+ OS_FALLTHROUGH;
case ENOENT:
/* don't show these error codes to the user */
error = 0;
}
#endif /* IPSEC */
- /*
- * If there is a routing header, replace the destination address field
- * with the first hop of the routing header.
- */
+ /* If there is a routing header, discard the packet. */
if (exthdrs.ip6e_rthdr != NULL) {
- struct ip6_rthdr0 *rh0;
- struct in6_addr *addr;
- struct sockaddr_in6 sa;
-
- rh = (struct ip6_rthdr *)
- (mtod(exthdrs.ip6e_rthdr, struct ip6_rthdr *));
- switch (rh->ip6r_type) {
- case IPV6_RTHDR_TYPE_0:
- rh0 = (struct ip6_rthdr0 *)rh;
- addr = (struct in6_addr *)(void *)(rh0 + 1);
-
- /*
- * construct a sockaddr_in6 form of
- * the first hop.
- *
- * XXX: we may not have enough
- * information about its scope zone;
- * there is no standard API to pass
- * the information from the
- * application.
- */
- bzero(&sa, sizeof (sa));
- sa.sin6_family = AF_INET6;
- sa.sin6_len = sizeof (sa);
- sa.sin6_addr = addr[0];
- if ((error = sa6_embedscope(&sa,
- ip6_use_defzone)) != 0) {
- goto bad;
- }
- ip6->ip6_dst = sa.sin6_addr;
- bcopy(&addr[1], &addr[0], sizeof (struct in6_addr) *
- (rh0->ip6r0_segleft - 1));
- addr[rh0->ip6r0_segleft - 1] = finaldst;
- /* XXX */
- in6_clearscope(addr + rh0->ip6r0_segleft - 1);
- break;
- default: /* is it possible? */
- error = EINVAL;
- goto bad;
- }
+ error = EINVAL;
+ goto bad;
}
/* Source address validation */
*/
if (ro == NULL) {
ro = &ip6route;
- bzero((caddr_t)ro, sizeof (*ro));
+ bzero((caddr_t)ro, sizeof(*ro));
}
- VERIFY(ro_pmtu == NULL); /* must not get here if dummynet */
ro_pmtu = ro;
- if (opt != NULL && opt->ip6po_rthdr)
+ if (opt != NULL && opt->ip6po_rthdr) {
ro = &opt->ip6po_route;
+ }
dst = SIN6(&ro->ro_dst);
- if (ro->ro_rt != NULL)
+ if (ro->ro_rt != NULL) {
RT_LOCK_ASSERT_NOTHELD(ro->ro_rt);
+ }
/*
* if specified, try to fill in the traffic class field.
* do not override if a non-zero value is already set.
if (opt != NULL && opt->ip6po_tclass >= 0) {
int mask = 0;
- if ((ip6->ip6_flow & htonl(0xfc << 20)) == 0)
+ if ((ip6->ip6_flow & htonl(0xfc << 20)) == 0) {
mask |= 0xfc;
- if ((ip6->ip6_flow & htonl(0x03 << 20)) == 0)
+ }
+ if ((ip6->ip6_flow & htonl(0x03 << 20)) == 0) {
mask |= 0x03;
+ }
if (mask != 0) {
ip6->ip6_flow |=
htonl((opt->ip6po_tclass & mask) << 20);
ip6->ip6_hlim = im6o->im6o_multicast_hlim;
IM6O_UNLOCK(im6o);
} else {
- ip6->ip6_hlim = ip6_defmcasthlim;
+ ip6->ip6_hlim = (uint8_t)ip6_defmcasthlim;
}
}
* next transmit.
*/
if (ROUTE_UNUSABLE(ro) || dst->sin6_family != AF_INET6 ||
- !IN6_ARE_ADDR_EQUAL(&dst->sin6_addr, &ip6->ip6_dst))
+ !IN6_ARE_ADDR_EQUAL(&dst->sin6_addr, &ip6->ip6_dst)) {
ROUTE_RELEASE(ro);
+ }
if (ro->ro_rt == NULL) {
- bzero(dst, sizeof (*dst));
+ bzero(dst, sizeof(*dst));
dst->sin6_family = AF_INET6;
- dst->sin6_len = sizeof (struct sockaddr_in6);
+ dst->sin6_len = sizeof(struct sockaddr_in6);
dst->sin6_addr = ip6->ip6_dst;
}
#if IPSEC
if (ip6obf.needipsec && needipsectun) {
#if CONFIG_DTRACE
- struct ifnet *trace_ifp = (ifpp != NULL) ? (*ifpp) : NULL;
+ struct ifnet *trace_ifp = (ifpp_save != NULL) ? (*ifpp_save) : NULL;
#endif /* CONFIG_DTRACE */
/*
* All the extension headers will become inaccessible
*
* IPv6 [ESP|AH] IPv6 [extension headers] payload
*/
- bzero(&exthdrs, sizeof (exthdrs));
+ bzero(&exthdrs, sizeof(exthdrs));
exthdrs.ip6e_ip6 = m;
ipsec_state.m = m;
- route_copyout(&ipsec_state.ro, (struct route *)ro,
- sizeof (ipsec_state.ro));
+ route_copyout((struct route *)&ipsec_state.ro, (struct route *)ro,
+ sizeof(struct route_in6));
ipsec_state.dst = SA(dst);
/* So that we can see packets inside the tunnel */
error = ipsec6_output_tunnel(&ipsec_state, sp, flags);
/* tunneled in IPv4? packet is gone */
- if (ipsec_state.tunneled == 4)
- goto done;
+ if (ipsec_state.tunneled == 4) {
+ m = NULL;
+ goto evaluateloop;
+ }
m = ipsec_state.m;
ipsec_saved_route = ro;
ro = (struct route_in6 *)&ipsec_state.ro;
dst = SIN6(ipsec_state.dst);
if (error) {
/* mbuf is already reclaimed in ipsec6_output_tunnel. */
- m0 = m = NULL;
m = NULL;
switch (error) {
case EHOSTUNREACH:
default:
printf("ip6_output (ipsec): error code %d\n",
error);
- /* FALLTHRU */
+ OS_FALLTHROUGH;
case ENOENT:
/* don't show these error codes to the user */
error = 0;
ip6oa->ip6oa_flags &= ~IP6OAF_BOUND_IF;
}
if (opt != NULL && opt->ip6po_pktinfo != NULL) {
- if (opt->ip6po_pktinfo->ipi6_ifindex != IFSCOPE_NONE)
+ if (opt->ip6po_pktinfo->ipi6_ifindex != IFSCOPE_NONE) {
opt->ip6po_pktinfo->ipi6_ifindex = IFSCOPE_NONE;
+ }
}
exthdrs.ip6e_ip6 = m;
}
#endif /* IPSEC */
- /* for safety */
+ /*
+ * ifp should only be filled in for dummy net packets which will jump
+ * to check_with_pf label.
+ */
if (ifp != NULL) {
- ifnet_release(ifp);
- ifp = NULL;
+ VERIFY(ip6obf.route_selected);
}
/* adjust pointer */
ip6 = mtod(m, struct ip6_hdr *);
if (ip6obf.select_srcif) {
- bzero(&src_sa, sizeof (src_sa));
+ bzero(&src_sa, sizeof(src_sa));
src_sa.sin6_family = AF_INET6;
- src_sa.sin6_len = sizeof (src_sa);
+ src_sa.sin6_len = sizeof(src_sa);
src_sa.sin6_addr = ip6->ip6_src;
}
- bzero(&dst_sa, sizeof (dst_sa));
+ bzero(&dst_sa, sizeof(dst_sa));
dst_sa.sin6_family = AF_INET6;
- dst_sa.sin6_len = sizeof (dst_sa);
+ dst_sa.sin6_len = sizeof(dst_sa);
dst_sa.sin6_addr = ip6->ip6_dst;
/*
+ * Only call in6_selectroute() on first iteration to avoid taking
+ * multiple references on ifp and rt.
+ *
* in6_selectroute() might return an ifp with its reference held
* even in the error case, so make sure to release its reference.
* ip6oa may be NULL if IPV6_OUTARGS isn't set.
*/
- if ((error = in6_selectroute(ip6obf.select_srcif ? &src_sa : NULL,
- &dst_sa, opt, im6o, &src_ia, ro, &ifp, &rt, 0, ip6oa)) != 0) {
- switch (error) {
- case EHOSTUNREACH:
- ip6stat.ip6s_noroute++;
- break;
- case EADDRNOTAVAIL:
- default:
- break; /* XXX statistics? */
+ if (!ip6obf.route_selected) {
+ error = in6_selectroute( ip6obf.select_srcif ? &src_sa : NULL,
+ &dst_sa, opt, im6o, &src_ia, ro, &ifp, &rt, 0, ip6oa);
+
+ if (error != 0) {
+ switch (error) {
+ case EHOSTUNREACH:
+ ip6stat.ip6s_noroute++;
+ break;
+ case EADDRNOTAVAIL:
+ default:
+ break; /* XXX statistics? */
+ }
+ if (ifp != NULL) {
+ in6_ifstat_inc(ifp, ifs6_out_discard);
+ }
+ /* ifp (if non-NULL) will be released at the end */
+ goto bad;
}
- if (ifp != NULL)
- in6_ifstat_inc(ifp, ifs6_out_discard);
- /* ifp (if non-NULL) will be released at the end */
- goto bad;
+ ip6obf.route_selected = TRUE;
}
if (rt == NULL) {
/*
* If in6_selectroute() does not return a route entry,
* dst may not have been updated.
*/
- *dst = dst_sa; /* XXX */
+ *dst = dst_sa; /* XXX */
}
+#if NECP
+ /* Catch-all to check if the interface is allowed */
+ if (!necp_packet_is_allowed_over_interface(m, ifp)) {
+ error = EHOSTUNREACH;
+ ip6stat.ip6s_necp_policy_drop++;
+ goto bad;
+ }
+#endif /* NECP */
+
/*
* then rt (for unicast) and ifp must be non-NULL valid values.
*/
}
if (rt != NULL) {
RT_LOCK(rt);
- ia = (struct in6_ifaddr *)(rt->rt_ifa);
- if (ia != NULL)
- IFA_ADDREF(&ia->ia_ifa);
+ if (ia == NULL) {
+ ia = (struct in6_ifaddr *)(rt->rt_ifa);
+ if (ia != NULL) {
+ IFA_ADDREF(&ia->ia_ifa);
+ }
+ }
rt->rt_use++;
RT_UNLOCK(rt);
}
* address of our own.
*/
if (ia != NULL && ia->ia_ifp) {
- ifnet_reference(ia->ia_ifp); /* for origifp */
- if (origifp != NULL)
+ ifnet_reference(ia->ia_ifp); /* for origifp */
+ if (origifp != NULL) {
ifnet_release(origifp);
+ }
origifp = ia->ia_ifp;
} else {
- if (ifp != NULL)
- ifnet_reference(ifp); /* for origifp */
- if (origifp != NULL)
+ if (ifp != NULL) {
+ ifnet_reference(ifp); /* for origifp */
+ }
+ if (origifp != NULL) {
ifnet_release(origifp);
+ }
origifp = ifp;
}
u_int32_t zone;
src0 = ip6->ip6_src;
- if (in6_setscope(&src0, origifp, &zone))
+ if (in6_setscope(&src0, origifp, &zone)) {
goto badscope;
- bzero(&src_sa, sizeof (src_sa));
+ }
+ bzero(&src_sa, sizeof(src_sa));
src_sa.sin6_family = AF_INET6;
- src_sa.sin6_len = sizeof (src_sa);
+ src_sa.sin6_len = sizeof(src_sa);
src_sa.sin6_addr = ip6->ip6_src;
if ((sa6_recoverscope(&src_sa, TRUE) ||
- zone != src_sa.sin6_scope_id))
+ zone != src_sa.sin6_scope_id)) {
goto badscope;
+ }
dst0 = ip6->ip6_dst;
- if ((in6_setscope(&dst0, origifp, &zone)))
+ if ((in6_setscope(&dst0, origifp, &zone))) {
goto badscope;
+ }
/* re-initialize to be sure */
- bzero(&dst_sa, sizeof (dst_sa));
+ bzero(&dst_sa, sizeof(dst_sa));
dst_sa.sin6_family = AF_INET6;
- dst_sa.sin6_len = sizeof (dst_sa);
+ dst_sa.sin6_len = sizeof(dst_sa);
dst_sa.sin6_addr = ip6->ip6_dst;
if ((sa6_recoverscope(&dst_sa, TRUE) ||
- zone != dst_sa.sin6_scope_id))
+ zone != dst_sa.sin6_scope_id)) {
goto badscope;
+ }
/* scope check is done. */
goto routefound;
badscope:
ip6stat.ip6s_badscope++;
in6_ifstat_inc(origifp, ifs6_out_discard);
- if (error == 0)
+ if (error == 0) {
error = EHOSTUNREACH; /* XXX */
+ }
goto bad;
}
if (ia != NULL && (ifp->if_flags & IFF_LOOPBACK)) {
uint32_t srcidx;
- if (src_ia != NULL)
+ if (src_ia != NULL) {
srcidx = src_ia->ia_ifp->if_index;
- else if (ro->ro_srcia != NULL)
+ } else if (ro->ro_srcia != NULL) {
srcidx = ro->ro_srcia->ifa_ifp->if_index;
- else
+ } else {
srcidx = 0;
+ }
ip6_setsrcifaddr_info(m, srcidx, NULL);
ip6_setdstifaddr_info(m, 0, ia);
if (!IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
m->m_flags &= ~(M_BCAST | M_MCAST); /* just in case */
} else {
- struct in6_multi *in6m;
+ struct in6_multi *in6m;
m->m_flags = (m->m_flags & ~M_BCAST) | M_MCAST;
in6_ifstat_inc_na(ifp, ifs6_out_mcast);
in6_multihead_lock_shared();
IN6_LOOKUP_MULTI(&ip6->ip6_dst, ifp, in6m);
in6_multihead_lock_done();
- if (im6o != NULL)
+ if (im6o != NULL) {
IM6O_LOCK(im6o);
+ }
if (in6m != NULL &&
(im6o == NULL || im6o->im6o_multicast_loop)) {
- if (im6o != NULL)
+ if (im6o != NULL) {
IM6O_UNLOCK(im6o);
+ }
/*
* If we belong to the destination multicast group
* on the outgoing interface, and the caller did not
* forbid loopback, loop back a copy.
*/
ip6_mloopback(NULL, ifp, m, dst, optlen, nxt0);
- } else if (im6o != NULL)
+ } else if (im6o != NULL) {
IM6O_UNLOCK(im6o);
- if (in6m != NULL)
+ }
+ if (in6m != NULL) {
IN6M_REMREF(in6m);
+ }
/*
* Multicasts with a hoplimit of zero may be looped back,
* above, but must not be transmitted on a network.
*/
if (ip6->ip6_hlim == 0 || (ifp->if_flags & IFF_LOOPBACK) ||
IN6_IS_ADDR_MC_INTFACELOCAL(&ip6->ip6_dst)) {
- m_freem(m);
- goto done;
+ /* remove m from the packetchain and continue looping */
+ if (m != NULL) {
+ m_freem(m);
+ }
+ m = NULL;
+ goto evaluateloop;
}
}
* Fill the outgoing inteface to tell the upper layer
* to increment per-interface statistics.
*/
- if (ifpp != NULL) {
- ifnet_reference(ifp); /* for caller */
- if (*ifpp != NULL)
- ifnet_release(*ifpp);
+ if (ifpp != NULL && *ifpp == NULL) {
+ ifnet_reference(ifp); /* for caller */
*ifpp = ifp;
}
/* Determine path MTU. */
- if ((error = ip6_getpmtu(ro_pmtu, ro, ifp, &finaldst, &mtu,
- &alwaysfrag)) != 0)
+ if ((error = ip6_getpmtu(ro_pmtu, ro, ifp, &finaldst, &mtu)) != 0) {
goto bad;
+ }
/*
* The caller of this function may specify to use the minimum MTU
*/
in6_clearscope(&ip6->ip6_src);
in6_clearscope(&ip6->ip6_dst);
-
-#if IPFW2
- /*
- * Check with the firewall...
- */
- if (ip6_fw_enable && ip6_fw_chk_ptr) {
- u_short port = 0;
- m->m_pkthdr.rcvif = NULL; /* XXX */
- /* If ipfw says divert, we have to just drop packet */
- if (ip6_fw_chk_ptr(&ip6, ifp, &port, &m)) {
- m_freem(m);
- goto done;
- }
- if (m == NULL) {
- error = EACCES;
- goto done;
- }
- }
-#endif /* IPFW2 */
-
/*
* If the outgoing packet contains a hop-by-hop options header,
* it must be examined and processed even by the source node.
u_int32_t dummy; /* XXX unused */
uint32_t oplen = 0; /* for ip6_process_hopopts() */
#if DIAGNOSTIC
- if ((hbh->ip6h_len + 1) << 3 > exthdrs.ip6e_hbh->m_len)
+ if ((hbh->ip6h_len + 1) << 3 > exthdrs.ip6e_hbh->m_len) {
panic("ip6e_hbh is not continuous");
+ }
#endif
/*
* XXX: If we have to send an ICMPv6 error to the sender,
m->m_flags |= M_LOOP;
m->m_pkthdr.rcvif = ifp;
if (ip6_process_hopopts(m, (u_int8_t *)(hbh + 1),
- ((hbh->ip6h_len + 1) << 3) - sizeof (struct ip6_hbh),
+ ((hbh->ip6h_len + 1) << 3) - sizeof(struct ip6_hbh),
&dummy, &oplen) < 0) {
- /* m was already freed at this point */
- error = EINVAL; /* better error? */
- goto done;
+ /*
+ * m was already freed at this point. Set to NULL so it
+ * is not re-freed at end of ip6_output_list.
+ */
+ m = NULL;
+ error = EINVAL; /* better error? */
+ goto bad;
}
m->m_flags &= ~M_LOOP; /* XXX */
m->m_pkthdr.rcvif = NULL;
check_with_pf:
#endif /* DUMMYNET */
#if PF
- if (PF_IS_ENABLED) {
+ if (PF_IS_ENABLED && !skip_pf) {
#if DUMMYNET
+
/*
* TODO: Need to save opt->ip6po_flags for reinjection
* rdar://10434993
args.fwa_m = m;
args.fwa_oif = ifp;
args.fwa_oflags = flags;
- if (flags & IPV6_OUTARGS)
+ if (flags & IPV6_OUTARGS) {
args.fwa_ip6oa = ip6oa;
+ }
args.fwa_ro6 = ro;
args.fwa_dst6 = dst;
args.fwa_ro6_pmtu = ro_pmtu;
args.fwa_origifp = origifp;
args.fwa_mtu = mtu;
- args.fwa_alwaysfrag = alwaysfrag;
args.fwa_unfragpartlen = unfragpartlen;
args.fwa_exthdrs = &exthdrs;
/* Invoke outbound packet filter */
#endif /* !DUMMYNET */
if (error != 0 || m == NULL) {
- /*
- * Note that if we ever handle packet chain, we will
- * have to restore the linkage from the previous
- * packet to the next like in ip_outout_list()
- */
if (m != NULL) {
panic("%s: unexpected packet %p\n",
__func__, m);
/* NOTREACHED */
}
- /* Already freed by callee */
- goto done;
+ /* m was already freed by callee and is now NULL. */
+ goto evaluateloop;
}
ip6 = mtod(m, struct ip6_hdr *);
}
#endif /* PF */
+#ifdef IPSEC
+ /* clean ipsec history before fragmentation */
+ ipsec_delaux(m);
+#endif /* IPSEC */
+
+ if (ip6oa != NULL) {
+ u_int8_t dscp;
+
+ dscp = (ntohl(ip6->ip6_flow) & IP6FLOW_DSCP_MASK) >> IP6FLOW_DSCP_SHIFT;
+
+ error = set_packet_qos(m, ifp,
+ ip6oa->ip6oa_flags & IP6OAF_QOSMARKING_ALLOWED ? TRUE : FALSE,
+ ip6oa->ip6oa_sotc, ip6oa->ip6oa_netsvctype, &dscp);
+ if (error == 0) {
+ ip6->ip6_flow &= ~htonl(IP6FLOW_DSCP_MASK);
+ ip6->ip6_flow |= htonl((u_int32_t)dscp << IP6FLOW_DSCP_SHIFT);
+ } else {
+ printf("%s if_dscp_for_mbuf() error %d\n", __func__, error);
+ error = 0;
+ }
+ }
/*
- * Send the packet to the outgoing interface.
- * If necessary, do IPv6 fragmentation before sending.
- *
- * the logic here is rather complex:
- * 1: normal case (dontfrag == 0, alwaysfrag == 0)
- * 1-a: send as is if tlen <= path mtu
- * 1-b: fragment if tlen > path mtu
- *
- * 2: if user asks us not to fragment (dontfrag == 1)
- * 2-a: send as is if tlen <= interface mtu
- * 2-b: error if tlen > interface mtu
- *
- * 3: if we always need to attach fragment header (alwaysfrag == 1)
- * always fragment
- *
- * 4: if dontfrag == 1 && alwaysfrag == 1
- * error, as we cannot handle this conflicting request
+ * Determine whether fragmentation is necessary. If so, m is passed
+ * back as a chain of packets and original mbuf is freed. Otherwise, m
+ * is unchanged.
*/
- tlen = m->m_pkthdr.len;
-
- if (opt != NULL && (opt->ip6po_flags & IP6PO_DONTFRAG))
- ip6obf.dontfrag = TRUE;
- else
- ip6obf.dontfrag = FALSE;
- if (ip6obf.dontfrag && alwaysfrag) { /* case 4 */
- /* conflicting request - can't transmit */
- error = EMSGSIZE;
+ error = ip6_fragment_packet(&m, opt, ip6oa,
+ &exthdrs, ifp, mtu, unfragpartlen, ro_pmtu, nxt0,
+ optlen);
+
+ if (error) {
goto bad;
}
- lck_rw_lock_shared(nd_if_rwlock);
+/*
+ * The evaluateloop label is where we decide whether to continue looping over
+ * packets or call into nd code to send.
+ */
+evaluateloop:
+
+ /*
+ * m may be NULL when we jump to the evaluateloop label from PF or
+ * other code that can drop packets.
+ */
+ if (m != NULL) {
+ /*
+ * If we already have a chain to send, tack m onto the end.
+ * Otherwise make m the start and end of the to-be-sent chain.
+ */
+ if (sendchain != NULL) {
+ sendchain_last->m_nextpkt = m;
+ } else {
+ sendchain = m;
+ }
+
+ /* Fragmentation may mean m is a chain. Find the last packet. */
+ while (m->m_nextpkt) {
+ m = m->m_nextpkt;
+ }
+ sendchain_last = m;
+ pktcnt++;
+ }
+
+ /* Fill in next m from inputchain as appropriate. */
+ m = inputchain;
+ if (m != NULL) {
+ /* Isolate m from rest of input chain. */
+ inputchain = m->m_nextpkt;
+ m->m_nextpkt = NULL;
+
+ /*
+ * Clear exthdrs and ipsec_state so stale contents are not
+ * reused. Note this also clears the exthdrs.merged flag.
+ */
+ bzero(&exthdrs, sizeof(exthdrs));
+ bzero(&ipsec_state, sizeof(ipsec_state));
+
+ /* Continue looping. */
+ goto loopit;
+ }
+
+ /*
+ * If we get here, there's no more mbufs in inputchain, so send the
+ * sendchain if there is one.
+ */
+ if (pktcnt > 0) {
+ error = nd6_output_list(ifp, origifp, sendchain, dst,
+ ro->ro_rt, adv);
+ /*
+ * Fall through to done label even in error case because
+ * nd6_output_list frees packetchain in both success and
+ * failure cases.
+ */
+ }
+
+done:
+ if (ifpp_save != NULL && *ifpp_save != NULL) {
+ ifnet_release(*ifpp_save);
+ *ifpp_save = NULL;
+ }
+ ROUTE_RELEASE(&ip6route);
+#if IPSEC
+ ROUTE_RELEASE(&ipsec_state.ro);
+ if (sp != NULL) {
+ key_freesp(sp, KEY_SADB_UNLOCKED);
+ }
+#endif /* IPSEC */
+#if NECP
+ ROUTE_RELEASE(&necp_route);
+#endif /* NECP */
+#if DUMMYNET
+ ROUTE_RELEASE(&saved_route);
+ ROUTE_RELEASE(&saved_ro_pmtu);
+#endif /* DUMMYNET */
+
+ if (ia != NULL) {
+ IFA_REMREF(&ia->ia_ifa);
+ }
+ if (src_ia != NULL) {
+ IFA_REMREF(&src_ia->ia_ifa);
+ }
+ if (ifp != NULL) {
+ ifnet_release(ifp);
+ }
+ if (origifp != NULL) {
+ ifnet_release(origifp);
+ }
+ if (ip6_output_measure) {
+ net_perf_measure_time(&net_perf, &start_tv, packets_processed);
+ net_perf_histogram(&net_perf, packets_processed);
+ }
+ return error;
+
+freehdrs:
+ if (exthdrs.ip6e_hbh != NULL) {
+ if (exthdrs.merged) {
+ panic("Double free of ip6e_hbh");
+ }
+ m_freem(exthdrs.ip6e_hbh);
+ }
+ if (exthdrs.ip6e_dest1 != NULL) {
+ if (exthdrs.merged) {
+ panic("Double free of ip6e_dest1");
+ }
+ m_freem(exthdrs.ip6e_dest1);
+ }
+ if (exthdrs.ip6e_rthdr != NULL) {
+ if (exthdrs.merged) {
+ panic("Double free of ip6e_rthdr");
+ }
+ m_freem(exthdrs.ip6e_rthdr);
+ }
+ if (exthdrs.ip6e_dest2 != NULL) {
+ if (exthdrs.merged) {
+ panic("Double free of ip6e_dest2");
+ }
+ m_freem(exthdrs.ip6e_dest2);
+ }
+ /* FALLTHRU */
+bad:
+ if (inputchain != NULL) {
+ m_freem_list(inputchain);
+ }
+ if (sendchain != NULL) {
+ m_freem_list(sendchain);
+ }
+ if (m != NULL) {
+ m_freem(m);
+ }
+
+ goto done;
+
+#undef ipf_pktopts
+#undef exthdrs
+#undef ip6route
+#undef ipsec_state
+#undef saved_route
+#undef saved_ro_pmtu
+#undef args
+}
+
+/* ip6_fragment_packet
+ *
+ * The fragmentation logic is rather complex:
+ * 1: normal case (dontfrag == 0)
+ * 1-a: send as is if tlen <= path mtu
+ * 1-b: fragment if tlen > path mtu
+ *
+ * 2: if user asks us not to fragment (dontfrag == 1)
+ * 2-a: send as is if tlen <= interface mtu
+ * 2-b: error if tlen > interface mtu
+ */
+
+static int
+ip6_fragment_packet(struct mbuf **mptr, struct ip6_pktopts *opt,
+ struct ip6_out_args *ip6oa, struct ip6_exthdrs *exthdrsp,
+ struct ifnet *ifp, uint32_t mtu, uint32_t unfragpartlen,
+ struct route_in6 *ro_pmtu, int nxt0, uint32_t optlen)
+{
+ VERIFY(NULL != mptr);
+ struct mbuf *m = *mptr;
+ int error = 0;
+ uint32_t tlen = m->m_pkthdr.len;
+ boolean_t dontfrag = (opt != NULL && (opt->ip6po_flags & IP6PO_DONTFRAG)) ||
+ (ip6oa != NULL && (ip6oa->ip6oa_flags & IP6OAF_DONT_FRAG));
+
+ if (m->m_pkthdr.pkt_flags & PKTF_FORWARDED) {
+ dontfrag = TRUE;
+ /*
+ * Discard partial sum information if this packet originated
+ * from another interface; the packet would already have the
+ * final checksum and we shouldn't recompute it.
+ */
+ if ((m->m_pkthdr.csum_flags & (CSUM_DATA_VALID | CSUM_PARTIAL)) ==
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) {
+ m->m_pkthdr.csum_flags &= ~CSUM_TX_FLAGS;
+ m->m_pkthdr.csum_data = 0;
+ }
+ }
+
/* Access without acquiring nd_ifinfo lock for performance */
- if (ip6obf.dontfrag && tlen > IN6_LINKMTU(ifp)) { /* case 2-b */
- lck_rw_done(nd_if_rwlock);
+ if (dontfrag && tlen > IN6_LINKMTU(ifp)) { /* case 2-b */
/*
* Even if the DONTFRAG option is specified, we cannot send the
* packet when the data length is larger than the MTU of the
struct ip6ctlparam ip6cp;
mtu32 = (u_int32_t)mtu;
- bzero(&ip6cp, sizeof (ip6cp));
+ bzero(&ip6cp, sizeof(ip6cp));
ip6cp.ip6c_cmdarg = (void *)&mtu32;
pfctlinput2(PRC_MSGSIZE, SA(&ro_pmtu->ro_dst), (void *)&ip6cp);
- error = EMSGSIZE;
- goto bad;
- } else {
- lck_rw_done(nd_if_rwlock);
+ return EMSGSIZE;
}
/*
* transmit packet without fragmentation
*/
- if (ip6obf.dontfrag || (!alwaysfrag && /* case 1-a and 2-a */
+ if (dontfrag ||
(tlen <= mtu || TSO_IPV6_OK(ifp, m) ||
- (ifp->if_hwassist & CSUM_FRAGMENT_IPV6)))) {
-#ifdef IPSEC
- /* clean ipsec history once it goes out of the node */
- ipsec_delaux(m);
-#endif /* IPSEC */
-
+ (ifp->if_hwassist & CSUM_FRAGMENT_IPV6))) {
+ /*
+ * mppn not updated in this case because no new chain is formed
+ * and inserted
+ */
ip6_output_checksum(ifp, mtu, m, nxt0, tlen, optlen);
-
- if (ro->ro_rt)
- RT_LOCK_ASSERT_NOTHELD(ro->ro_rt);
- error = nd6_output(ifp, origifp, m, dst, ro->ro_rt, adv);
- goto done;
+ } else {
+ /*
+ * time to fragment - cases 1-b is handled inside
+ * ip6_do_fragmentation().
+ * mppn is passed down to be updated to point at fragment chain.
+ */
+ u_int8_t *lexthdrsp;
+
+ if (exthdrsp->ip6e_rthdr != NULL) {
+ lexthdrsp = mtod(exthdrsp->ip6e_rthdr, uint8_t *);
+ } else if (exthdrsp->ip6e_dest1 != NULL) {
+ lexthdrsp = mtod(exthdrsp->ip6e_dest1, uint8_t *);
+ } else if (exthdrsp->ip6e_hbh != NULL) {
+ lexthdrsp = mtod(exthdrsp->ip6e_hbh, uint8_t *);
+ } else {
+ lexthdrsp = NULL;
+ }
+ error = ip6_do_fragmentation(mptr, optlen, ifp,
+ unfragpartlen, mtod(m, struct ip6_hdr *), lexthdrsp, mtu,
+ nxt0, htonl(ip6_randomid()));
}
- /*
- * try to fragment the packet. case 1-b and 3
- */
- if ((m->m_pkthdr.csum_flags & CSUM_TSO_IPV6)) {
+ return error;
+}
+
+/*
+ * ip6_do_fragmentation() is called by ip6_fragment_packet() after determining
+ * the packet needs to be fragmented. on success, morig is freed and a chain
+ * of fragments is linked into the packet chain where morig existed. Otherwise,
+ * an errno is returned.
+ * optlen: total length of all extension headers (excludes the IPv6 header).
+ * unfragpartlen: length of the per-fragment headers which consist of the IPv6
+ * header plus any extension headers that must be processed by nodes
+ * en route to the destination.
+ * lexthdrsp: pointer to the last extension header in the unfragmentable part
+ * or NULL.
+ * nxt0: upper-layer protocol number.
+ * id: Identification value to be used in the fragment header.
+ */
+int
+ip6_do_fragmentation(struct mbuf **mptr, uint32_t optlen, struct ifnet *ifp,
+ uint32_t unfragpartlen, struct ip6_hdr *ip6, uint8_t *lexthdrsp,
+ uint32_t mtu, int nxt0, uint32_t id)
+{
+ VERIFY(NULL != mptr);
+ int error = 0;
+
+ struct mbuf *morig = *mptr;
+ struct mbuf *first_mbufp = NULL;
+ struct mbuf *last_mbufp = NULL;
+
+ uint32_t tlen = morig->m_pkthdr.len;
+
+ /* try to fragment the packet. case 1-b */
+ if ((morig->m_pkthdr.csum_flags & CSUM_TSO_IPV6)) {
/* TSO and fragment aren't compatible */
- error = EMSGSIZE;
in6_ifstat_inc(ifp, ifs6_out_fragfail);
- goto bad;
+ return EMSGSIZE;
} else if (mtu < IPV6_MMTU) {
/* path MTU cannot be less than IPV6_MMTU */
- error = EMSGSIZE;
in6_ifstat_inc(ifp, ifs6_out_fragfail);
- goto bad;
+ return EMSGSIZE;
} else if (ip6->ip6_plen == 0) {
/* jumbo payload cannot be fragmented */
- error = EMSGSIZE;
in6_ifstat_inc(ifp, ifs6_out_fragfail);
- goto bad;
+ return EMSGSIZE;
} else {
- struct mbuf **mnext, *m_frgpart;
+ uint32_t hlen, off, len;
+ struct mbuf **mnext = NULL;
struct ip6_frag *ip6f;
- u_int32_t id = htonl(ip6_randomid());
u_char nextproto;
/*
* Must be able to put at least 8 bytes per fragment.
*/
hlen = unfragpartlen;
- if (mtu > IPV6_MAXPACKET)
+ if (mtu > IPV6_MAXPACKET) {
mtu = IPV6_MAXPACKET;
+ }
- len = (mtu - hlen - sizeof (struct ip6_frag)) & ~7;
+ len = (mtu - hlen - sizeof(struct ip6_frag)) & ~7;
if (len < 8) {
- error = EMSGSIZE;
in6_ifstat_inc(ifp, ifs6_out_fragfail);
- goto bad;
+ return EMSGSIZE;
}
- mnext = &m->m_nextpkt;
-
/*
* Change the next header field of the last header in the
* unfragmentable part.
*/
- if (exthdrs.ip6e_rthdr != NULL) {
- nextproto = *mtod(exthdrs.ip6e_rthdr, u_char *);
- *mtod(exthdrs.ip6e_rthdr, u_char *) = IPPROTO_FRAGMENT;
- } else if (exthdrs.ip6e_dest1 != NULL) {
- nextproto = *mtod(exthdrs.ip6e_dest1, u_char *);
- *mtod(exthdrs.ip6e_dest1, u_char *) = IPPROTO_FRAGMENT;
- } else if (exthdrs.ip6e_hbh != NULL) {
- nextproto = *mtod(exthdrs.ip6e_hbh, u_char *);
- *mtod(exthdrs.ip6e_hbh, u_char *) = IPPROTO_FRAGMENT;
+ if (lexthdrsp != NULL) {
+ nextproto = *lexthdrsp;
+ *lexthdrsp = IPPROTO_FRAGMENT;
} else {
nextproto = ip6->ip6_nxt;
ip6->ip6_nxt = IPPROTO_FRAGMENT;
}
- if (m->m_pkthdr.csum_flags & CSUM_DELAY_IPV6_DATA)
- in6_delayed_cksum_offset(m, 0, optlen, nxt0);
+ if (morig->m_pkthdr.csum_flags & CSUM_DELAY_IPV6_DATA) {
+ in6_delayed_cksum_offset(morig, 0, optlen, nxt0);
+ }
/*
* Loop through length of segment after first fragment,
* make new header and copy data of each part and link onto
* chain.
*/
- m0 = m;
for (off = hlen; off < tlen; off += len) {
- struct ip6_hdr *mhip6;
+ struct ip6_hdr *new_mhip6;
+ struct mbuf *new_m;
+ struct mbuf *m_frgpart;
- MGETHDR(m, M_DONTWAIT, MT_HEADER); /* MAC-OK */
- if (m == NULL) {
+ MGETHDR(new_m, M_DONTWAIT, MT_HEADER); /* MAC-OK */
+ if (new_m == NULL) {
error = ENOBUFS;
ip6stat.ip6s_odropped++;
- goto sendorfree;
+ break;
+ }
+ new_m->m_pkthdr.rcvif = NULL;
+ new_m->m_flags = morig->m_flags & M_COPYFLAGS;
+
+ if (first_mbufp != NULL) {
+ /* Every pass through loop but first */
+ *mnext = new_m;
+ last_mbufp = new_m;
+ } else {
+ /* This is the first element of the fragment chain */
+ first_mbufp = new_m;
+ last_mbufp = new_m;
}
- m->m_pkthdr.rcvif = NULL;
- m->m_flags = m0->m_flags & M_COPYFLAGS;
- *mnext = m;
- mnext = &m->m_nextpkt;
- m->m_data += max_linkhdr;
- mhip6 = mtod(m, struct ip6_hdr *);
- *mhip6 = *ip6;
- m->m_len = sizeof (*mhip6);
- error = ip6_insertfraghdr(m0, m, hlen, &ip6f);
+ mnext = &new_m->m_nextpkt;
+
+ new_m->m_data += max_linkhdr;
+ new_mhip6 = mtod(new_m, struct ip6_hdr *);
+ *new_mhip6 = *ip6;
+ new_m->m_len = sizeof(*new_mhip6);
+
+ error = ip6_insertfraghdr(morig, new_m, hlen, &ip6f);
if (error) {
ip6stat.ip6s_odropped++;
- goto sendorfree;
+ break;
}
+
ip6f->ip6f_offlg = htons((u_short)((off - hlen) & ~7));
- if (off + len >= tlen)
+ if (off + len >= tlen) {
len = tlen - off;
- else
+ } else {
ip6f->ip6f_offlg |= IP6F_MORE_FRAG;
- mhip6->ip6_plen = htons((u_short)(len + hlen +
- sizeof (*ip6f) - sizeof (struct ip6_hdr)));
- if ((m_frgpart = m_copy(m0, off, len)) == NULL) {
+ }
+ new_mhip6->ip6_plen = htons((u_short)(len + hlen +
+ sizeof(*ip6f) - sizeof(struct ip6_hdr)));
+
+ if ((m_frgpart = m_copy(morig, off, len)) == NULL) {
error = ENOBUFS;
ip6stat.ip6s_odropped++;
- goto sendorfree;
+ break;
}
- m_cat(m, m_frgpart);
- m->m_pkthdr.len = len + hlen + sizeof (*ip6f);
- m->m_pkthdr.rcvif = NULL;
-
- M_COPY_CLASSIFIER(m, m0);
- M_COPY_PFTAG(m, m0);
+ m_cat(new_m, m_frgpart);
+ new_m->m_pkthdr.len = len + hlen + sizeof(*ip6f);
+ new_m->m_pkthdr.rcvif = NULL;
-#ifdef notyet
-#if CONFIG_MACF_NET
- mac_create_fragment(m0, m);
-#endif /* CONFIG_MACF_NET */
-#endif /* notyet */
+ M_COPY_CLASSIFIER(new_m, morig);
+ M_COPY_PFTAG(new_m, morig);
+ M_COPY_NECPTAG(new_m, morig);
ip6f->ip6f_reserved = 0;
ip6f->ip6f_ident = id;
in6_ifstat_inc(ifp, ifs6_out_fragcreat);
}
- in6_ifstat_inc(ifp, ifs6_out_fragok);
- }
-
- /*
- * Remove leading garbages.
- */
-sendorfree:
- m = m0->m_nextpkt;
- m0->m_nextpkt = NULL;
- m_freem(m0);
- for (m0 = m; m != NULL; m = m0) {
- m0 = m->m_nextpkt;
- m->m_nextpkt = NULL;
- if (error == 0) {
-#if IPSEC
- /* clean ipsec history once it goes out of the node */
- ipsec_delaux(m);
-#endif /* IPSEC */
- error = nd6_output(ifp, origifp, m, dst, ro->ro_rt,
- adv);
+ if (error) {
+ /* free all the fragments created */
+ if (first_mbufp != NULL) {
+ m_freem_list(first_mbufp);
+ first_mbufp = NULL;
+ }
+ last_mbufp = NULL;
} else {
- m_freem(m);
+ /* successful fragmenting */
+ m_freem(morig);
+ *mptr = first_mbufp;
+ last_mbufp->m_nextpkt = NULL;
+ ip6stat.ip6s_fragmented++;
+ in6_ifstat_inc(ifp, ifs6_out_fragok);
}
}
-
- if (error == 0)
- ip6stat.ip6s_fragmented++;
-
-done:
- ROUTE_RELEASE(&ip6route);
-#if IPSEC
- ROUTE_RELEASE(&ipsec_state.ro);
- if (sp != NULL)
- key_freesp(sp, KEY_SADB_UNLOCKED);
-#endif /* IPSEC */
-#if NECP
- ROUTE_RELEASE(&necp_route);
-#endif /* NECP */
-#if DUMMYNET
- ROUTE_RELEASE(&saved_route);
- ROUTE_RELEASE(&saved_ro_pmtu);
-#endif /* DUMMYNET */
-
- if (ia != NULL)
- IFA_REMREF(&ia->ia_ifa);
- if (src_ia != NULL)
- IFA_REMREF(&src_ia->ia_ifa);
- if (ifp != NULL)
- ifnet_release(ifp);
- if (origifp != NULL)
- ifnet_release(origifp);
- return (error);
-
-freehdrs:
- if (exthdrs.ip6e_hbh != NULL)
- m_freem(exthdrs.ip6e_hbh);
- if (exthdrs.ip6e_dest1 != NULL)
- m_freem(exthdrs.ip6e_dest1);
- if (exthdrs.ip6e_rthdr != NULL)
- m_freem(exthdrs.ip6e_rthdr);
- if (exthdrs.ip6e_dest2 != NULL)
- m_freem(exthdrs.ip6e_dest2);
- /* FALLTHRU */
-bad:
- if (m != NULL)
- m_freem(m);
- goto done;
-
-#undef ipf_pktopts
-#undef exthdrs
-#undef ip6route
-#undef ipsec_state
-#undef saved_route
-#undef saved_ro_pmtu
-#undef args
+ return error;
}
static int
{
struct mbuf *m;
- if (hlen > MCLBYTES)
- return (ENOBUFS); /* XXX */
-
+ if (hlen > MCLBYTES) {
+ return ENOBUFS; /* XXX */
+ }
MGET(m, M_DONTWAIT, MT_DATA);
- if (m == NULL)
- return (ENOBUFS);
+ if (m == NULL) {
+ return ENOBUFS;
+ }
if (hlen > MLEN) {
MCLGET(m, M_DONTWAIT);
if (!(m->m_flags & M_EXT)) {
m_free(m);
- return (ENOBUFS);
+ return ENOBUFS;
}
}
m->m_len = hlen;
- if (hdr != NULL)
+ if (hdr != NULL) {
bcopy(hdr, mtod(m, caddr_t), hlen);
+ }
*mp = m;
- return (0);
+ return 0;
}
static void
in6_finalize_cksum(struct mbuf *m, uint32_t hoff, int32_t optlen,
int32_t nxt0, uint32_t csum_flags)
{
- unsigned char buf[sizeof (struct ip6_hdr)] __attribute__((aligned(8)));
+ unsigned char buf[sizeof(struct ip6_hdr)] __attribute__((aligned(8)));
struct ip6_hdr *ip6;
uint32_t offset, mlen, hlen, olen, sw_csum;
uint16_t csum, ulpoff, plen;
uint8_t nxt;
- _CASSERT(sizeof (csum) == sizeof (uint16_t));
+ _CASSERT(sizeof(csum) == sizeof(uint16_t));
VERIFY(m->m_flags & M_PKTHDR);
sw_csum = (csum_flags & m->m_pkthdr.csum_flags);
- if ((sw_csum &= CSUM_DELAY_IPV6_DATA) == 0)
+ if ((sw_csum &= CSUM_DELAY_IPV6_DATA) == 0) {
goto done;
+ }
- mlen = m->m_pkthdr.len; /* total mbuf len */
- hlen = sizeof (*ip6); /* IPv6 header len */
+ mlen = m->m_pkthdr.len; /* total mbuf len */
+ hlen = sizeof(*ip6); /* IPv6 header len */
/* sanity check (need at least IPv6 header) */
if (mlen < (hoff + hlen)) {
ip6->ip6_plen, ip6->ip6_plen, plen, plen,
(mlen - (hoff + hlen)));
}
- plen = mlen - (hoff + hlen);
+ plen = (uint16_t)(mlen - (hoff + hlen));
}
}
olen = 0;
} else {
/* caller supplied the original transport number; use it */
- if (nxt0 >= 0)
- nxt = nxt0;
+ if (nxt0 >= 0) {
+ nxt = (uint8_t)nxt0;
+ }
olen = optlen;
}
- offset = hoff + hlen + olen; /* ULP header */
+ offset = hoff + hlen + olen; /* ULP header */
/* sanity check */
if (mlen < offset) {
* which is expected to contain the ULP offset; therefore
* CSUM_PARTIAL offset adjustment must be undone.
*/
- if ((m->m_pkthdr.csum_flags & (CSUM_PARTIAL|CSUM_DATA_VALID)) ==
- (CSUM_PARTIAL|CSUM_DATA_VALID)) {
+ if ((m->m_pkthdr.csum_flags & (CSUM_PARTIAL | CSUM_DATA_VALID)) ==
+ (CSUM_PARTIAL | CSUM_DATA_VALID)) {
/*
* Get back the original ULP offset (this will
* undo the CSUM_PARTIAL logic in ip6_output.)
m->m_pkthdr.csum_tx_start);
}
- ulpoff = (m->m_pkthdr.csum_data & 0xffff); /* ULP csum offset */
+ ulpoff = (m->m_pkthdr.csum_data & 0xffff); /* ULP csum offset */
- if (mlen < (ulpoff + sizeof (csum))) {
+ if (mlen < (ulpoff + sizeof(csum))) {
panic("%s: mbuf %p pkt len (%u) proto %d invalid ULP "
"cksum offset (%u) cksum flags 0x%x\n", __func__,
m, mlen, nxt, ulpoff, m->m_pkthdr.csum_flags);
ip6_out_cksum_stats(nxt, plen - olen);
/* RFC1122 4.1.3.4 */
- if (csum == 0 && (m->m_pkthdr.csum_flags & CSUM_UDPIPV6))
+ if (csum == 0 &&
+ (m->m_pkthdr.csum_flags & (CSUM_UDPIPV6 | CSUM_ZERO_INVERT))) {
csum = 0xffff;
+ }
/* Insert the checksum in the ULP csum field */
offset += ulpoff;
- if ((offset + sizeof (csum)) > m->m_len) {
- m_copyback(m, offset, sizeof (csum), &csum);
+ if ((offset + sizeof(csum)) > m->m_len) {
+ m_copyback(m, offset, sizeof(csum), &csum);
} else if (IP6_HDR_ALIGNED_P(mtod(m, char *) + hoff)) {
*(uint16_t *)(void *)(mtod(m, char *) + offset) = csum;
} else {
- bcopy(&csum, (mtod(m, char *) + offset), sizeof (csum));
+ bcopy(&csum, (mtod(m, char *) + offset), sizeof(csum));
}
- m->m_pkthdr.csum_flags &=
- ~(CSUM_DELAY_IPV6_DATA | CSUM_DATA_VALID | CSUM_PARTIAL);
+ m->m_pkthdr.csum_flags &= ~(CSUM_DELAY_IPV6_DATA | CSUM_DATA_VALID |
+ CSUM_PARTIAL | CSUM_ZERO_INVERT);
done:
- return (sw_csum);
+ return sw_csum;
}
/*
u_char *optbuf;
u_int32_t v;
-#define JUMBOOPTLEN 8 /* length of jumbo payload option and padding */
+#define JUMBOOPTLEN 8 /* length of jumbo payload option and padding */
/*
* If there is no hop-by-hop options header, allocate new one.
*/
if (exthdrs->ip6e_hbh == NULL) {
MGET(mopt, M_DONTWAIT, MT_DATA);
- if (mopt == NULL)
- return (ENOBUFS);
+ if (mopt == NULL) {
+ return ENOBUFS;
+ }
mopt->m_len = JUMBOOPTLEN;
optbuf = mtod(mopt, u_char *);
- optbuf[1] = 0; /* = ((JUMBOOPTLEN) >> 3) - 1 */
+ optbuf[1] = 0; /* = ((JUMBOOPTLEN) >> 3) - 1 */
exthdrs->ip6e_hbh = mopt;
} else {
struct ip6_hbh *hbh;
* XXX: give up if the whole (new) hbh header does
* not fit even in an mbuf cluster.
*/
- if (oldoptlen + JUMBOOPTLEN > MCLBYTES)
- return (ENOBUFS);
+ if (oldoptlen + JUMBOOPTLEN > MCLBYTES) {
+ return ENOBUFS;
+ }
/*
* As a consequence, we must always prepare a cluster
n = NULL;
}
}
- if (n == NULL)
- return (ENOBUFS);
+ if (n == NULL) {
+ return ENOBUFS;
+ }
n->m_len = oldoptlen + JUMBOOPTLEN;
bcopy(mtod(mopt, caddr_t), mtod(n, caddr_t),
oldoptlen);
optbuf[2] = IP6OPT_JUMBO;
optbuf[3] = 4;
v = (u_int32_t)htonl(plen + JUMBOOPTLEN);
- bcopy(&v, &optbuf[4], sizeof (u_int32_t));
+ bcopy(&v, &optbuf[4], sizeof(u_int32_t));
/* finally, adjust the packet header length */
exthdrs->ip6e_ip6->m_pkthdr.len += JUMBOOPTLEN;
- return (0);
+ return 0;
#undef JUMBOOPTLEN
}
{
struct mbuf *n, *mlast;
- if (hlen > sizeof (struct ip6_hdr)) {
- n = m_copym(m0, sizeof (struct ip6_hdr),
- hlen - sizeof (struct ip6_hdr), M_DONTWAIT);
- if (n == NULL)
- return (ENOBUFS);
+ if (hlen > sizeof(struct ip6_hdr)) {
+ n = m_copym(m0, sizeof(struct ip6_hdr),
+ hlen - sizeof(struct ip6_hdr), M_DONTWAIT);
+ if (n == NULL) {
+ return ENOBUFS;
+ }
m->m_next = n;
- } else
+ } else {
n = m;
+ }
/* Search for the last mbuf of unfragmentable part. */
- for (mlast = n; mlast->m_next; mlast = mlast->m_next)
+ for (mlast = n; mlast->m_next; mlast = mlast->m_next) {
;
+ }
if (!(mlast->m_flags & M_EXT) &&
- M_TRAILINGSPACE(mlast) >= sizeof (struct ip6_frag)) {
+ M_TRAILINGSPACE(mlast) >= sizeof(struct ip6_frag)) {
/* use the trailing space of the last mbuf for the frag hdr */
*frghdrp = (struct ip6_frag *)(mtod(mlast, caddr_t) +
mlast->m_len);
- mlast->m_len += sizeof (struct ip6_frag);
- m->m_pkthdr.len += sizeof (struct ip6_frag);
+ mlast->m_len += sizeof(struct ip6_frag);
+ m->m_pkthdr.len += sizeof(struct ip6_frag);
} else {
/* allocate a new mbuf for the fragment header */
struct mbuf *mfrg;
MGET(mfrg, M_DONTWAIT, MT_DATA);
- if (mfrg == NULL)
- return (ENOBUFS);
- mfrg->m_len = sizeof (struct ip6_frag);
+ if (mfrg == NULL) {
+ return ENOBUFS;
+ }
+ mfrg->m_len = sizeof(struct ip6_frag);
*frghdrp = mtod(mfrg, struct ip6_frag *);
mlast->m_next = mfrg;
}
- return (0);
+ return 0;
}
static int
ip6_getpmtu(struct route_in6 *ro_pmtu, struct route_in6 *ro,
- struct ifnet *ifp, struct in6_addr *dst, u_int32_t *mtup,
- boolean_t *alwaysfragp)
+ struct ifnet *ifp, struct in6_addr *dst, u_int32_t *mtup)
{
u_int32_t mtu = 0;
- boolean_t alwaysfrag = FALSE;
int error = 0;
+
if (ro_pmtu != ro) {
/* The first hop and the final destination may differ. */
struct sockaddr_in6 *sa6_dst = SIN6(&ro_pmtu->ro_dst);
if (ROUTE_UNUSABLE(ro_pmtu) ||
- !IN6_ARE_ADDR_EQUAL(&sa6_dst->sin6_addr, dst))
+ !IN6_ARE_ADDR_EQUAL(&sa6_dst->sin6_addr, dst)) {
ROUTE_RELEASE(ro_pmtu);
+ }
if (ro_pmtu->ro_rt == NULL) {
- bzero(sa6_dst, sizeof (*sa6_dst));
+ bzero(sa6_dst, sizeof(*sa6_dst));
sa6_dst->sin6_family = AF_INET6;
- sa6_dst->sin6_len = sizeof (struct sockaddr_in6);
+ sa6_dst->sin6_len = sizeof(struct sockaddr_in6);
sa6_dst->sin6_addr = *dst;
rtalloc_scoped((struct route *)ro_pmtu,
if (ro_pmtu->ro_rt != NULL) {
u_int32_t ifmtu;
- if (ifp == NULL)
+ if (ifp == NULL) {
ifp = ro_pmtu->ro_rt->rt_ifp;
- lck_rw_lock_shared(nd_if_rwlock);
+ }
/* Access without acquiring nd_ifinfo lock for performance */
ifmtu = IN6_LINKMTU(ifp);
- lck_rw_done(nd_if_rwlock);
/*
* Access rmx_mtu without holding the route entry lock,
* this case happens with path MTU discovery timeouts.
*/
mtu = ifmtu;
- if (!(ro_pmtu->ro_rt->rt_rmx.rmx_locks & RTV_MTU))
+ if (!(ro_pmtu->ro_rt->rt_rmx.rmx_locks & RTV_MTU)) {
ro_pmtu->ro_rt->rt_rmx.rmx_mtu = mtu; /* XXX */
- } else if (mtu < IPV6_MMTU) {
- /*
- * RFC2460 section 5, last paragraph:
- * if we record ICMPv6 too big message with
- * mtu < IPV6_MMTU, transmit packets sized IPV6_MMTU
- * or smaller, with framgent header attached.
- * (fragment header is needed regardless from the
- * packet size, for translators to identify packets)
- */
- alwaysfrag = TRUE;
- mtu = IPV6_MMTU;
+ }
}
} else {
if (ifp) {
- lck_rw_lock_shared(nd_if_rwlock);
/* Don't hold nd_ifinfo lock for performance */
mtu = IN6_LINKMTU(ifp);
- lck_rw_done(nd_if_rwlock);
} else {
error = EHOSTUNREACH; /* XXX */
}
}
*mtup = mtu;
- if (alwaysfragp != NULL)
- *alwaysfragp = alwaysfrag;
- return (error);
+ return error;
}
/*
struct inpcb *in6p = sotoinpcb(so);
int error = 0, optval = 0;
int level, op = -1, optname = 0;
- int optlen = 0;
+ size_t optlen = 0;
struct proc *p;
+ lck_mtx_t *mutex_held = NULL;
VERIFY(sopt != NULL);
privileged = (proc_suser(p) == 0);
if (level == IPPROTO_IPV6) {
+ boolean_t capture_exthdrstat_in = FALSE;
switch (op) {
case SOPT_SET:
+ mutex_held = socket_getlock(so, PR_F_WILLUNLOCK);
+ /*
+ * Wait if we are in the middle of ip6_output
+ * as we unlocked the socket there and don't
+ * want to overwrite the IP options
+ */
+ if (in6p->inp_sndinprog_cnt > 0) {
+ in6p->inp_sndingprog_waiters++;
+
+ while (in6p->inp_sndinprog_cnt > 0) {
+ msleep(&in6p->inp_sndinprog_cnt, mutex_held,
+ PSOCK | PCATCH, "inp_sndinprog_cnt",
+ NULL);
+ }
+ in6p->inp_sndingprog_waiters--;
+ }
switch (optname) {
case IPV6_2292PKTOPTIONS: {
struct mbuf *m;
error = soopt_getm(sopt, &m);
- if (error != 0)
+ if (error != 0) {
break;
+ }
error = soopt_mcopyin(sopt, m);
- if (error != 0)
+ if (error != 0) {
break;
+ }
error = ip6_pcbopts(&in6p->in6p_outputopts,
m, so, sopt);
m_freem(m);
case IPV6_RECVHOPOPTS:
case IPV6_RECVDSTOPTS:
case IPV6_RECVRTHDRDSTOPTS:
- if (!privileged)
+ if (!privileged) {
break;
- /* FALLTHROUGH */
+ }
+ OS_FALLTHROUGH;
case IPV6_UNICAST_HOPS:
case IPV6_HOPLIMIT:
case IPV6_RECVPKTINFO:
case IPV6_RECVTCLASS:
case IPV6_V6ONLY:
case IPV6_AUTOFLOWLABEL:
- if (optlen != sizeof (int)) {
+ if (optlen != sizeof(int)) {
error = EINVAL;
break;
}
error = sooptcopyin(sopt, &optval,
- sizeof (optval), sizeof (optval));
- if (error)
+ sizeof(optval), sizeof(optval));
+ if (error) {
break;
+ }
switch (optname) {
case IPV6_UNICAST_HOPS:
error = EINVAL;
} else {
/* -1 = kernel default */
- in6p->in6p_hops = optval;
+ in6p->in6p_hops = (short)optval;
if (in6p->inp_vflag &
INP_IPV4) {
in6p->inp_ip_ttl =
- optval;
+ (uint8_t)optval;
}
}
break;
-#define OPTSET(bit) do { \
- if (optval) \
- in6p->inp_flags |= (bit); \
- else \
- in6p->inp_flags &= ~(bit); \
+#define OPTSET(bit) do { \
+ if (optval) \
+ in6p->inp_flags |= (bit); \
+ else \
+ in6p->inp_flags &= ~(bit); \
} while (0)
-#define OPTSET2292(bit) do { \
- in6p->inp_flags |= IN6P_RFC2292; \
- if (optval) \
- in6p->inp_flags |= (bit); \
- else \
- in6p->inp_flags &= ~(bit); \
+#define OPTSET2292(bit) do { \
+ in6p->inp_flags |= IN6P_RFC2292; \
+ if (optval) \
+ in6p->inp_flags |= (bit); \
+ else \
+ in6p->inp_flags &= ~(bit); \
} while (0)
-#define OPTBIT(bit) (in6p->inp_flags & (bit) ? 1 : 0)
+#define OPTBIT(bit) (in6p->inp_flags & (bit) ? 1 : 0)
case IPV6_RECVPKTINFO:
/* cannot mix with RFC2292 */
}
optp = &in6p->in6p_outputopts;
error = ip6_pcbopt(IPV6_HOPLIMIT,
- (u_char *)&optval, sizeof (optval),
+ (u_char *)&optval, sizeof(optval),
optp, uproto);
break;
}
break;
}
OPTSET(IN6P_HOPOPTS);
+ capture_exthdrstat_in = TRUE;
break;
case IPV6_RECVDSTOPTS:
break;
}
OPTSET(IN6P_DSTOPTS);
+ capture_exthdrstat_in = TRUE;
break;
case IPV6_RECVRTHDRDSTOPTS:
break;
}
OPTSET(IN6P_RTHDRDSTOPTS);
+ capture_exthdrstat_in = TRUE;
break;
case IPV6_RECVRTHDR:
break;
}
OPTSET(IN6P_RTHDR);
+ capture_exthdrstat_in = TRUE;
break;
case IPV6_RECVPATHMTU:
* (RFC3542 leaves this case
* unspecified.)
*/
- if (uproto != IPPROTO_TCP)
+ if (uproto != IPPROTO_TCP) {
OPTSET(IN6P_MTU);
+ }
break;
case IPV6_V6ONLY:
*/
if (in6p->inp_lport ||
!IN6_IS_ADDR_UNSPECIFIED(
- &in6p->in6p_laddr)) {
+ &in6p->in6p_laddr)) {
error = EINVAL;
break;
}
OPTSET(IN6P_IPV6_V6ONLY);
- if (optval)
+ if (optval) {
in6p->inp_vflag &= ~INP_IPV4;
- else
+ } else {
in6p->inp_vflag |= INP_IPV4;
+ }
break;
case IPV6_RECVTCLASS:
case IPV6_AUTOFLOWLABEL:
OPTSET(IN6P_AUTOFLOWLABEL);
break;
-
}
break;
case IPV6_PREFER_TEMPADDR: {
struct ip6_pktopts **optp;
- if (optlen != sizeof (optval)) {
+ if (optlen != sizeof(optval)) {
error = EINVAL;
break;
}
error = sooptcopyin(sopt, &optval,
- sizeof (optval), sizeof (optval));
- if (error)
+ sizeof(optval), sizeof(optval));
+ if (error) {
break;
+ }
optp = &in6p->in6p_outputopts;
error = ip6_pcbopt(optname, (u_char *)&optval,
- sizeof (optval), optp, uproto);
+ sizeof(optval), optp, uproto);
+
+ if (optname == IPV6_TCLASS) {
+ // Add in the ECN flags
+ u_int8_t tos = (in6p->inp_ip_tos & ~IPTOS_ECN_MASK);
+ u_int8_t ecn = optval & IPTOS_ECN_MASK;
+ in6p->inp_ip_tos = tos | ecn;
+ }
break;
}
case IPV6_2292DSTOPTS:
case IPV6_2292RTHDR:
/* RFC 2292 */
- if (optlen != sizeof (int)) {
+ if (optlen != sizeof(int)) {
error = EINVAL;
break;
}
error = sooptcopyin(sopt, &optval,
- sizeof (optval), sizeof (optval));
- if (error)
+ sizeof(optval), sizeof(optval));
+ if (error) {
break;
+ }
switch (optname) {
case IPV6_2292PKTINFO:
OPTSET2292(IN6P_PKTINFO);
* Check super-user privilege.
* See comments for IPV6_RECVHOPOPTS.
*/
- if (!privileged)
- return (EPERM);
+ if (!privileged) {
+ return EPERM;
+ }
OPTSET2292(IN6P_HOPOPTS);
+ capture_exthdrstat_in = TRUE;
break;
case IPV6_2292DSTOPTS:
- if (!privileged)
- return (EPERM);
- OPTSET2292(IN6P_DSTOPTS|
+ if (!privileged) {
+ return EPERM;
+ }
+ OPTSET2292(IN6P_DSTOPTS |
IN6P_RTHDRDSTOPTS); /* XXX */
+ capture_exthdrstat_in = TRUE;
break;
case IPV6_2292RTHDR:
OPTSET2292(IN6P_RTHDR);
+ capture_exthdrstat_in = TRUE;
break;
}
break;
break;
}
error = soopt_getm(sopt, &m);
- if (error != 0)
+ if (error != 0) {
break;
+ }
error = soopt_mcopyin(sopt, m);
- if (error != 0)
+ if (error != 0) {
break;
+ }
optp = &in6p->in6p_outputopts;
error = ip6_pcbopt(optname, mtod(m, u_char *),
case IPV6_PORTRANGE:
error = sooptcopyin(sopt, &optval,
- sizeof (optval), sizeof (optval));
- if (error)
+ sizeof(optval), sizeof(optval));
+ if (error) {
break;
+ }
switch (optval) {
case IPV6_PORTRANGE_DEFAULT:
caddr_t req = NULL;
size_t len = 0;
struct mbuf *m;
-
- if ((error = soopt_getm(sopt, &m)) != 0)
+
+ if ((error = soopt_getm(sopt, &m)) != 0) {
break;
- if ((error = soopt_mcopyin(sopt, m)) != 0)
+ }
+ if ((error = soopt_mcopyin(sopt, m)) != 0) {
break;
-
+ }
+
req = mtod(m, caddr_t);
len = m->m_len;
error = ipsec6_set_policy(in6p, optname, req,
- len, privileged);
+ len, privileged);
m_freem(m);
break;
}
#endif /* IPSEC */
-#if IPFIREWALL
- case IPV6_FW_ADD:
- case IPV6_FW_DEL:
- case IPV6_FW_FLUSH:
- case IPV6_FW_ZERO: {
- if (ip6_fw_ctl_ptr == NULL)
- load_ip6fw();
- if (ip6_fw_ctl_ptr != NULL)
- error = (*ip6_fw_ctl_ptr)(sopt);
- else
- error = ENOPROTOOPT;
- break;
- }
-#endif /* IPFIREWALL */
/*
* IPv6 variant of IP_BOUND_IF; for details see
* comments on IP_BOUND_IF in ip_ctloutput().
}
error = sooptcopyin(sopt, &optval,
- sizeof (optval), sizeof (optval));
+ sizeof(optval), sizeof(optval));
- if (error)
+ if (error) {
break;
+ }
error = inp_bindif(in6p, optval, NULL);
break;
}
error = sooptcopyin(sopt, &optval,
- sizeof (optval), sizeof (optval));
+ sizeof(optval), sizeof(optval));
- if (error)
+ if (error) {
break;
+ }
/* once set, it cannot be unset */
if (!optval && INP_NO_CELLULAR(in6p)) {
error = ENOPROTOOPT;
break;
}
+ if (capture_exthdrstat_in) {
+ if (uproto == IPPROTO_TCP) {
+ INC_ATOMIC_INT64_LIM(net_api_stats.nas_sock_inet6_stream_exthdr_in);
+ } else if (uproto == IPPROTO_UDP) {
+ INC_ATOMIC_INT64_LIM(net_api_stats.nas_sock_inet6_dgram_exthdr_in);
+ }
+ }
break;
case SOPT_GET:
switch (optname) {
-
case IPV6_2292PKTOPTIONS:
/*
* RFC3542 (effectively) deprecated the
case IPV6_RECVTCLASS:
case IPV6_AUTOFLOWLABEL:
switch (optname) {
-
case IPV6_RECVHOPOPTS:
optval = OPTBIT(IN6P_HOPOPTS);
break;
case IPV6_PORTRANGE: {
int flags;
flags = in6p->inp_flags;
- if (flags & INP_HIGHPORT)
+ if (flags & INP_HIGHPORT) {
optval = IPV6_PORTRANGE_HIGH;
- else if (flags & INP_LOWPORT)
+ } else if (flags & INP_LOWPORT) {
optval = IPV6_PORTRANGE_LOW;
- else
+ } else {
optval = 0;
+ }
break;
}
case IPV6_RECVTCLASS:
optval = OPTBIT(IN6P_AUTOFLOWLABEL);
break;
}
- if (error)
+ if (error) {
break;
+ }
error = sooptcopyout(sopt, &optval,
- sizeof (optval));
+ sizeof(optval));
break;
case IPV6_PATHMTU: {
struct ip6_mtuinfo mtuinfo;
struct route_in6 sro;
- bzero(&sro, sizeof (sro));
+ bzero(&sro, sizeof(sro));
- if (!(so->so_state & SS_ISCONNECTED))
- return (ENOTCONN);
+ if (!(so->so_state & SS_ISCONNECTED)) {
+ return ENOTCONN;
+ }
/*
* XXX: we dot not consider the case of source
* routing, or optional information to specify
* the outgoing interface.
*/
error = ip6_getpmtu(&sro, NULL, NULL,
- &in6p->in6p_faddr, &pmtu, NULL);
+ &in6p->in6p_faddr, &pmtu);
ROUTE_RELEASE(&sro);
- if (error)
+ if (error) {
break;
- if (pmtu > IPV6_MAXPACKET)
+ }
+ if (pmtu > IPV6_MAXPACKET) {
pmtu = IPV6_MAXPACKET;
+ }
- bzero(&mtuinfo, sizeof (mtuinfo));
+ bzero(&mtuinfo, sizeof(mtuinfo));
mtuinfo.ip6m_mtu = (u_int32_t)pmtu;
optdata = (void *)&mtuinfo;
- optdatalen = sizeof (mtuinfo);
+ optdatalen = sizeof(mtuinfo);
error = sooptcopyout(sopt, optdata,
optdatalen);
break;
optval = OPTBIT(IN6P_RTHDR);
break;
case IPV6_2292DSTOPTS:
- optval = OPTBIT(IN6P_DSTOPTS|
+ optval = OPTBIT(IN6P_DSTOPTS |
IN6P_RTHDRDSTOPTS);
break;
}
error = sooptcopyout(sopt, &optval,
- sizeof (optval));
+ sizeof(optval));
break;
case IPV6_PKTINFO:
break;
}
#endif /* IPSEC */
-#if IPFIREWALL
- case IPV6_FW_GET: {
- if (ip6_fw_ctl_ptr == NULL)
- load_ip6fw();
- if (ip6_fw_ctl_ptr != NULL)
- error = (*ip6_fw_ctl_ptr)(sopt);
- else
- error = ENOPROTOOPT;
- break;
- }
-#endif /* IPFIREWALL */
case IPV6_BOUND_IF:
- if (in6p->inp_flags & INP_BOUND_IF)
+ if (in6p->inp_flags & INP_BOUND_IF) {
optval = in6p->inp_boundifp->if_index;
+ }
error = sooptcopyout(sopt, &optval,
- sizeof (optval));
+ sizeof(optval));
break;
case IPV6_NO_IFT_CELLULAR:
optval = INP_NO_CELLULAR(in6p) ? 1 : 0;
error = sooptcopyout(sopt, &optval,
- sizeof (optval));
+ sizeof(optval));
break;
case IPV6_OUT_IF:
optval = (in6p->in6p_last_outifp != NULL) ?
in6p->in6p_last_outifp->if_index : 0;
error = sooptcopyout(sopt, &optval,
- sizeof (optval));
+ sizeof(optval));
break;
default:
}
break;
}
+ } else if (level == IPPROTO_UDP) {
+ error = udp_ctloutput(so, sopt);
} else {
error = EINVAL;
}
- return (error);
+ return error;
}
int
ip6_raw_ctloutput(struct socket *so, struct sockopt *sopt)
{
- int error = 0, optval, optlen;
+ int error = 0, optval;
+ size_t optlen;
const int icmp6off = offsetof(struct icmp6_hdr, icmp6_cksum);
struct inpcb *in6p = sotoinpcb(so);
int level, op, optname;
optname = sopt->sopt_name;
optlen = sopt->sopt_valsize;
- if (level != IPPROTO_IPV6)
- return (EINVAL);
+ if (level != IPPROTO_IPV6) {
+ return EINVAL;
+ }
switch (optname) {
case IPV6_CHECKSUM:
*/
switch (op) {
case SOPT_SET:
- if (optlen != sizeof (int)) {
+ if (optlen != sizeof(int)) {
error = EINVAL;
break;
}
- error = sooptcopyin(sopt, &optval, sizeof (optval),
- sizeof (optval));
- if (error)
+ error = sooptcopyin(sopt, &optval, sizeof(optval),
+ sizeof(optval));
+ if (error) {
break;
+ }
if ((optval % 2) != 0) {
/* the API assumes even offset values */
error = EINVAL;
} else if (SOCK_PROTO(so) == IPPROTO_ICMPV6) {
- if (optval != icmp6off)
+ if (optval != icmp6off) {
error = EINVAL;
+ }
} else {
in6p->in6p_cksum = optval;
}
break;
case SOPT_GET:
- if (SOCK_PROTO(so) == IPPROTO_ICMPV6)
+ if (SOCK_PROTO(so) == IPPROTO_ICMPV6) {
optval = icmp6off;
- else
+ } else {
optval = in6p->in6p_cksum;
+ }
- error = sooptcopyout(sopt, &optval, sizeof (optval));
+ error = sooptcopyout(sopt, &optval, sizeof(optval));
break;
default:
break;
}
- return (error);
+ return error;
}
/*
#if DIAGNOSTIC
if (opt->ip6po_pktinfo || opt->ip6po_nexthop ||
opt->ip6po_hbh || opt->ip6po_dest1 || opt->ip6po_dest2 ||
- opt->ip6po_rhinfo.ip6po_rhi_rthdr)
+ opt->ip6po_rhinfo.ip6po_rhi_rthdr) {
printf("%s: all specified options are cleared.\n",
__func__);
+ }
#endif
ip6_clearpktopts(opt, -1);
} else {
- opt = _MALLOC(sizeof (*opt), M_IP6OPT, M_WAITOK);
- if (opt == NULL)
- return (ENOBUFS);
+ opt = _MALLOC(sizeof(*opt), M_IP6OPT, M_WAITOK);
+ if (opt == NULL) {
+ return ENOBUFS;
+ }
}
*pktopt = NULL;
* Only turning off any previous options, regardless of
* whether the opt is just created or given.
*/
- if (opt != NULL)
+ if (opt != NULL) {
FREE(opt, M_IP6OPT);
- return (0);
+ }
+ return 0;
}
/* set options specified by user. */
if ((error = ip6_setpktopts(m, opt, NULL, SOCK_PROTO(so))) != 0) {
ip6_clearpktopts(opt, -1); /* XXX: discard all options */
FREE(opt, M_IP6OPT);
- return (error);
+ return error;
}
*pktopt = opt;
- return (0);
+ return 0;
}
/*
void
ip6_initpktopts(struct ip6_pktopts *opt)
{
-
- bzero(opt, sizeof (*opt));
- opt->ip6po_hlim = -1; /* -1 means default hop limit */
- opt->ip6po_tclass = -1; /* -1 means default traffic class */
+ bzero(opt, sizeof(*opt));
+ opt->ip6po_hlim = -1; /* -1 means default hop limit */
+ opt->ip6po_tclass = -1; /* -1 means default traffic class */
opt->ip6po_minmtu = IP6PO_MINMTU_MCASTONLY;
opt->ip6po_prefer_tempaddr = IP6PO_TEMPADDR_SYSTEM;
}
opt = *pktopt;
if (opt == NULL) {
- opt = _MALLOC(sizeof (*opt), M_IP6OPT, M_WAITOK);
- if (opt == NULL)
- return (ENOBUFS);
+ opt = _MALLOC(sizeof(*opt), M_IP6OPT, M_WAITOK);
+ if (opt == NULL) {
+ return ENOBUFS;
+ }
ip6_initpktopts(opt);
*pktopt = opt;
}
- return (ip6_setpktopt(optname, buf, len, opt, 1, 0, uproto));
+ return ip6_setpktopt(optname, buf, len, opt, 1, 0, uproto);
}
static int
switch (optname) {
case IPV6_PKTINFO:
- if (pktopt && pktopt->ip6po_pktinfo)
+ if (pktopt && pktopt->ip6po_pktinfo) {
optdata = (void *)pktopt->ip6po_pktinfo;
- else {
+ } else {
/* XXX: we don't have to do this every time... */
- bzero(&null_pktinfo, sizeof (null_pktinfo));
+ bzero(&null_pktinfo, sizeof(null_pktinfo));
optdata = (void *)&null_pktinfo;
}
- optdatalen = sizeof (struct in6_pktinfo);
+ optdatalen = sizeof(struct in6_pktinfo);
break;
case IPV6_TCLASS:
- if (pktopt && pktopt->ip6po_tclass >= 0)
+ if (pktopt && pktopt->ip6po_tclass >= 0) {
optdata = (void *)&pktopt->ip6po_tclass;
- else
+ } else {
optdata = (void *)&deftclass;
- optdatalen = sizeof (int);
+ }
+ optdatalen = sizeof(int);
break;
case IPV6_HOPOPTS:
break;
case IPV6_USE_MIN_MTU:
- if (pktopt)
+ if (pktopt) {
optdata = (void *)&pktopt->ip6po_minmtu;
- else
+ } else {
optdata = (void *)&defminmtu;
- optdatalen = sizeof (int);
+ }
+ optdatalen = sizeof(int);
break;
case IPV6_DONTFRAG:
- if (pktopt && ((pktopt->ip6po_flags) & IP6PO_DONTFRAG))
+ if (pktopt && ((pktopt->ip6po_flags) & IP6PO_DONTFRAG)) {
on = 1;
- else
+ } else {
on = 0;
+ }
optdata = (void *)&on;
- optdatalen = sizeof (on);
+ optdatalen = sizeof(on);
break;
case IPV6_PREFER_TEMPADDR:
- if (pktopt)
+ if (pktopt) {
optdata = (void *)&pktopt->ip6po_prefer_tempaddr;
- else
+ } else {
optdata = (void *)&defpreftemp;
- optdatalen = sizeof (int);
+ }
+ optdatalen = sizeof(int);
break;
- default: /* should not happen */
+ default: /* should not happen */
#ifdef DIAGNOSTIC
panic("ip6_getpcbopt: unexpected option\n");
#endif
- return (ENOPROTOOPT);
+ return ENOPROTOOPT;
}
- return (sooptcopyout(sopt, optdata, optdatalen));
+ return sooptcopyout(sopt, optdata, optdatalen);
}
void
ip6_clearpktopts(struct ip6_pktopts *pktopt, int optname)
{
- if (pktopt == NULL)
+ if (pktopt == NULL) {
return;
+ }
if (optname == -1 || optname == IPV6_PKTINFO) {
- if (pktopt->ip6po_pktinfo)
+ if (pktopt->ip6po_pktinfo) {
FREE(pktopt->ip6po_pktinfo, M_IP6OPT);
+ }
pktopt->ip6po_pktinfo = NULL;
}
- if (optname == -1 || optname == IPV6_HOPLIMIT)
+ if (optname == -1 || optname == IPV6_HOPLIMIT) {
pktopt->ip6po_hlim = -1;
- if (optname == -1 || optname == IPV6_TCLASS)
+ }
+ if (optname == -1 || optname == IPV6_TCLASS) {
pktopt->ip6po_tclass = -1;
+ }
if (optname == -1 || optname == IPV6_NEXTHOP) {
ROUTE_RELEASE(&pktopt->ip6po_nextroute);
- if (pktopt->ip6po_nexthop)
+ if (pktopt->ip6po_nexthop) {
FREE(pktopt->ip6po_nexthop, M_IP6OPT);
+ }
pktopt->ip6po_nexthop = NULL;
}
if (optname == -1 || optname == IPV6_HOPOPTS) {
- if (pktopt->ip6po_hbh)
+ if (pktopt->ip6po_hbh) {
FREE(pktopt->ip6po_hbh, M_IP6OPT);
+ }
pktopt->ip6po_hbh = NULL;
}
if (optname == -1 || optname == IPV6_RTHDRDSTOPTS) {
- if (pktopt->ip6po_dest1)
+ if (pktopt->ip6po_dest1) {
FREE(pktopt->ip6po_dest1, M_IP6OPT);
+ }
pktopt->ip6po_dest1 = NULL;
}
if (optname == -1 || optname == IPV6_RTHDR) {
- if (pktopt->ip6po_rhinfo.ip6po_rhi_rthdr)
+ if (pktopt->ip6po_rhinfo.ip6po_rhi_rthdr) {
FREE(pktopt->ip6po_rhinfo.ip6po_rhi_rthdr, M_IP6OPT);
+ }
pktopt->ip6po_rhinfo.ip6po_rhi_rthdr = NULL;
ROUTE_RELEASE(&pktopt->ip6po_route);
}
if (optname == -1 || optname == IPV6_DSTOPTS) {
- if (pktopt->ip6po_dest2)
+ if (pktopt->ip6po_dest2) {
FREE(pktopt->ip6po_dest2, M_IP6OPT);
+ }
pktopt->ip6po_dest2 = NULL;
}
}
-#define PKTOPT_EXTHDRCPY(type) do { \
- if (src->type) { \
- int hlen = \
- (((struct ip6_ext *)src->type)->ip6e_len + 1) << 3; \
- dst->type = _MALLOC(hlen, M_IP6OPT, canwait); \
- if (dst->type == NULL && canwait == M_NOWAIT) \
- goto bad; \
- bcopy(src->type, dst->type, hlen); \
- } \
+#define PKTOPT_EXTHDRCPY(type) do { \
+ if (src->type) { \
+ int hlen = \
+ (((struct ip6_ext *)src->type)->ip6e_len + 1) << 3; \
+ dst->type = _MALLOC(hlen, M_IP6OPT, canwait); \
+ if (dst->type == NULL && canwait == M_NOWAIT) \
+ goto bad; \
+ bcopy(src->type, dst->type, hlen); \
+ } \
} while (0)
static int
copypktopts(struct ip6_pktopts *dst, struct ip6_pktopts *src, int canwait)
{
- if (dst == NULL || src == NULL) {
+ if (dst == NULL || src == NULL) {
printf("copypktopts: invalid argument\n");
- return (EINVAL);
+ return EINVAL;
}
dst->ip6po_hlim = src->ip6po_hlim;
dst->ip6po_tclass = src->ip6po_tclass;
dst->ip6po_flags = src->ip6po_flags;
if (src->ip6po_pktinfo) {
- dst->ip6po_pktinfo = _MALLOC(sizeof (*dst->ip6po_pktinfo),
+ dst->ip6po_pktinfo = _MALLOC(sizeof(*dst->ip6po_pktinfo),
M_IP6OPT, canwait);
- if (dst->ip6po_pktinfo == NULL && canwait == M_NOWAIT)
+ if (dst->ip6po_pktinfo == NULL && canwait == M_NOWAIT) {
goto bad;
+ }
*dst->ip6po_pktinfo = *src->ip6po_pktinfo;
}
if (src->ip6po_nexthop) {
dst->ip6po_nexthop = _MALLOC(src->ip6po_nexthop->sa_len,
M_IP6OPT, canwait);
- if (dst->ip6po_nexthop == NULL && canwait == M_NOWAIT)
+ if (dst->ip6po_nexthop == NULL && canwait == M_NOWAIT) {
goto bad;
+ }
bcopy(src->ip6po_nexthop, dst->ip6po_nexthop,
src->ip6po_nexthop->sa_len);
}
PKTOPT_EXTHDRCPY(ip6po_dest1);
PKTOPT_EXTHDRCPY(ip6po_dest2);
PKTOPT_EXTHDRCPY(ip6po_rthdr); /* not copy the cached route */
- return (0);
+ return 0;
bad:
ip6_clearpktopts(dst, -1);
- return (ENOBUFS);
+ return ENOBUFS;
}
#undef PKTOPT_EXTHDRCPY
int error;
struct ip6_pktopts *dst;
- dst = _MALLOC(sizeof (*dst), M_IP6OPT, canwait);
- if (dst == NULL)
- return (NULL);
+ dst = _MALLOC(sizeof(*dst), M_IP6OPT, canwait);
+ if (dst == NULL) {
+ return NULL;
+ }
ip6_initpktopts(dst);
if ((error = copypktopts(dst, src, canwait)) != 0) {
FREE(dst, M_IP6OPT);
- return (NULL);
+ return NULL;
}
- return (dst);
+ return dst;
}
void
ip6_freepcbopts(struct ip6_pktopts *pktopt)
{
- if (pktopt == NULL)
+ if (pktopt == NULL) {
return;
+ }
ip6_clearpktopts(pktopt, -1);
void
ip6_moptions_init(void)
{
- PE_parse_boot_argn("ifa_debug", &im6o_debug, sizeof (im6o_debug));
+ PE_parse_boot_argn("ifa_debug", &im6o_debug, sizeof(im6o_debug));
- im6o_size = (im6o_debug == 0) ? sizeof (struct ip6_moptions) :
- sizeof (struct ip6_moptions_dbg);
+ vm_size_t im6o_size = (im6o_debug == 0) ? sizeof(struct ip6_moptions) :
+ sizeof(struct ip6_moptions_dbg);
- im6o_zone = zinit(im6o_size, IM6O_ZONE_MAX * im6o_size, 0,
- IM6O_ZONE_NAME);
- if (im6o_zone == NULL) {
- panic("%s: failed allocating %s", __func__, IM6O_ZONE_NAME);
- /* NOTREACHED */
- }
- zone_change(im6o_zone, Z_EXPAND, TRUE);
+ im6o_zone = zone_create(IM6O_ZONE_NAME, im6o_size, ZC_ZFREE_CLEARMEM);
}
void
im6o_addref(struct ip6_moptions *im6o, int locked)
{
- if (!locked)
+ if (!locked) {
IM6O_LOCK(im6o);
- else
+ } else {
IM6O_LOCK_ASSERT_HELD(im6o);
+ }
if (++im6o->im6o_refcnt == 0) {
panic("%s: im6o %p wraparound refcnt\n", __func__, im6o);
(*im6o->im6o_trace)(im6o, TRUE);
}
- if (!locked)
+ if (!locked) {
IM6O_UNLOCK(im6o);
+ }
}
void
struct in6_mfilter *imf;
imf = im6o->im6o_mfilters ? &im6o->im6o_mfilters[i] : NULL;
- if (imf != NULL)
+ if (imf != NULL) {
im6f_leave(imf);
+ }
(void) in6_mc_leave(im6o->im6o_membership[i], imf);
- if (imf != NULL)
+ if (imf != NULL) {
im6f_purge(imf);
+ }
IN6M_REMREF(im6o->im6o_membership[i]);
im6o->im6o_membership[i] = NULL;
}
struct ip6_moptions *
-ip6_allocmoptions(int how)
+ip6_allocmoptions(zalloc_flags_t how)
{
struct ip6_moptions *im6o;
- im6o = (how == M_WAITOK) ?
- zalloc(im6o_zone) : zalloc_noblock(im6o_zone);
+ im6o = zalloc_flags(im6o_zone, how | Z_ZERO);
if (im6o != NULL) {
- bzero(im6o, im6o_size);
lck_mtx_init(&im6o->im6o_lock, ifa_mtx_grp, ifa_mtx_attr);
im6o->im6o_debug |= IFD_ALLOC;
if (im6o_debug != 0) {
IM6O_ADDREF(im6o);
}
- return (im6o);
+ return im6o;
}
/*
{
struct cmsghdr *cm = NULL;
- if (control == NULL || opt == NULL)
- return (EINVAL);
+ if (control == NULL || opt == NULL) {
+ return EINVAL;
+ }
ip6_initpktopts(opt);
if (stickyopt) {
* but we can allow this since this option should be rarely
* used.
*/
- if ((error = copypktopts(opt, stickyopt, M_NOWAIT)) != 0)
- return (error);
+ if ((error = copypktopts(opt, stickyopt, M_NOWAIT)) != 0) {
+ return error;
+ }
}
/*
* XXX: Currently, we assume all the optional information is stored
* in a single mbuf.
*/
- if (control->m_next)
- return (EINVAL);
+ if (control->m_next) {
+ return EINVAL;
+ }
- if (control->m_len < CMSG_LEN(0))
- return (EINVAL);
+ if (control->m_len < CMSG_LEN(0)) {
+ return EINVAL;
+ }
- for (cm = M_FIRST_CMSGHDR(control); cm != NULL;
+ for (cm = M_FIRST_CMSGHDR(control);
+ is_cmsg_valid(control, cm);
cm = M_NXT_CMSGHDR(control, cm)) {
int error;
- if (cm->cmsg_len < sizeof (struct cmsghdr) ||
- cm->cmsg_len > control->m_len)
- return (EINVAL);
- if (cm->cmsg_level != IPPROTO_IPV6)
+ if (cm->cmsg_level != IPPROTO_IPV6) {
continue;
+ }
error = ip6_setpktopt(cm->cmsg_type, CMSG_DATA(cm),
cm->cmsg_len - CMSG_LEN(0), opt, 0, 1, uproto);
- if (error)
- return (error);
+ if (error) {
+ return error;
+ }
}
- return (0);
+ return 0;
}
/*
* Set a particular packet option, as a sticky option or an ancillary data
{
int minmtupolicy, preftemp;
int error;
+ boolean_t capture_exthdrstat_out = FALSE;
if (!sticky && !cmsg) {
#ifdef DIAGNOSTIC
printf("ip6_setpktopt: impossible case\n");
#endif
- return (EINVAL);
+ return EINVAL;
}
/*
* Caller must have ensured that the buffer is at least
* aligned on 32-bit boundary.
*/
- VERIFY(IS_P2ALIGNED(buf, sizeof (u_int32_t)));
+ VERIFY(IS_P2ALIGNED(buf, sizeof(u_int32_t)));
/*
* IPV6_2292xxx is for backward compatibility to RFC2292, and should
case IPV6_2292DSTOPTS:
case IPV6_2292RTHDR:
case IPV6_2292PKTOPTIONS:
- return (ENOPROTOOPT);
+ return ENOPROTOOPT;
}
}
if (sticky && cmsg) {
case IPV6_DONTFRAG:
case IPV6_TCLASS:
case IPV6_PREFER_TEMPADDR: /* XXX: not an RFC3542 option */
- return (ENOPROTOOPT);
+ return ENOPROTOOPT;
}
}
struct ifnet *ifp = NULL;
struct in6_pktinfo *pktinfo;
- if (len != sizeof (struct in6_pktinfo))
- return (EINVAL);
+ if (len != sizeof(struct in6_pktinfo)) {
+ return EINVAL;
+ }
pktinfo = (struct in6_pktinfo *)(void *)buf;
if (uproto == IPPROTO_TCP && optname == IPV6_PKTINFO &&
sticky && !IN6_IS_ADDR_UNSPECIFIED(&pktinfo->ipi6_addr)) {
- return (EINVAL);
+ return EINVAL;
}
/* validate the interface index if specified. */
if (pktinfo->ipi6_ifindex > if_index) {
ifnet_head_done();
- return (ENXIO);
+ return ENXIO;
}
if (pktinfo->ipi6_ifindex) {
ifp = ifindex2ifnet[pktinfo->ipi6_ifindex];
if (ifp == NULL) {
ifnet_head_done();
- return (ENXIO);
+ return ENXIO;
}
}
* application when it is used as a sticky option.
*/
if (opt->ip6po_pktinfo == NULL) {
- opt->ip6po_pktinfo = _MALLOC(sizeof (*pktinfo),
+ opt->ip6po_pktinfo = _MALLOC(sizeof(*pktinfo),
M_IP6OPT, M_NOWAIT);
- if (opt->ip6po_pktinfo == NULL)
- return (ENOBUFS);
+ if (opt->ip6po_pktinfo == NULL) {
+ return ENOBUFS;
+ }
}
- bcopy(pktinfo, opt->ip6po_pktinfo, sizeof (*pktinfo));
+ bcopy(pktinfo, opt->ip6po_pktinfo, sizeof(*pktinfo));
break;
}
* RFC 3542 deprecated the usage of sticky IPV6_HOPLIMIT
* to simplify the ordering among hoplimit options.
*/
- if (optname == IPV6_HOPLIMIT && sticky)
- return (ENOPROTOOPT);
+ if (optname == IPV6_HOPLIMIT && sticky) {
+ return ENOPROTOOPT;
+ }
- if (len != sizeof (int))
- return (EINVAL);
+ if (len != sizeof(int)) {
+ return EINVAL;
+ }
hlimp = (int *)(void *)buf;
- if (*hlimp < -1 || *hlimp > 255)
- return (EINVAL);
+ if (*hlimp < -1 || *hlimp > IPV6_MAXHLIM) {
+ return EINVAL;
+ }
opt->ip6po_hlim = *hlimp;
break;
case IPV6_TCLASS: {
int tclass;
- if (len != sizeof (int))
- return (EINVAL);
+ if (len != sizeof(int)) {
+ return EINVAL;
+ }
tclass = *(int *)(void *)buf;
- if (tclass < -1 || tclass > 255)
- return (EINVAL);
+ if (tclass < -1 || tclass > 255) {
+ return EINVAL;
+ }
opt->ip6po_tclass = tclass;
break;
case IPV6_2292NEXTHOP:
case IPV6_NEXTHOP:
error = suser(kauth_cred_get(), 0);
- if (error)
- return (EACCES);
+ if (error) {
+ return EACCES;
+ }
- if (len == 0) { /* just remove the option */
+ if (len == 0) { /* just remove the option */
ip6_clearpktopts(opt, IPV6_NEXTHOP);
break;
}
/* check if cmsg_len is large enough for sa_len */
- if (len < sizeof (struct sockaddr) || len < *buf)
- return (EINVAL);
+ if (len < sizeof(struct sockaddr) || len < *buf) {
+ return EINVAL;
+ }
switch (SA(buf)->sa_family) {
case AF_INET6: {
struct sockaddr_in6 *sa6 = SIN6(buf);
- if (sa6->sin6_len != sizeof (struct sockaddr_in6))
- return (EINVAL);
+ if (sa6->sin6_len != sizeof(struct sockaddr_in6)) {
+ return EINVAL;
+ }
if (IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr) ||
IN6_IS_ADDR_MULTICAST(&sa6->sin6_addr)) {
- return (EINVAL);
+ return EINVAL;
}
if ((error = sa6_embedscope(sa6, ip6_use_defzone))
!= 0) {
- return (error);
+ return error;
}
break;
}
- case AF_LINK: /* should eventually be supported */
+ case AF_LINK: /* should eventually be supported */
default:
- return (EAFNOSUPPORT);
+ return EAFNOSUPPORT;
}
/* turn off the previous option, then set the new option. */
ip6_clearpktopts(opt, IPV6_NEXTHOP);
opt->ip6po_nexthop = _MALLOC(*buf, M_IP6OPT, M_NOWAIT);
- if (opt->ip6po_nexthop == NULL)
- return (ENOBUFS);
+ if (opt->ip6po_nexthop == NULL) {
+ return ENOBUFS;
+ }
bcopy(buf, opt->ip6po_nexthop, *buf);
break;
* overhead.
*/
error = suser(kauth_cred_get(), 0);
- if (error)
- return (EACCES);
+ if (error) {
+ return EACCES;
+ }
if (len == 0) {
ip6_clearpktopts(opt, IPV6_HOPOPTS);
- break; /* just remove the option */
+ break; /* just remove the option */
}
/* message length validation */
- if (len < sizeof (struct ip6_hbh))
- return (EINVAL);
+ if (len < sizeof(struct ip6_hbh)) {
+ return EINVAL;
+ }
hbh = (struct ip6_hbh *)(void *)buf;
hbhlen = (hbh->ip6h_len + 1) << 3;
- if (len != hbhlen)
- return (EINVAL);
+ if (len != hbhlen) {
+ return EINVAL;
+ }
/* turn off the previous option, then set the new option. */
ip6_clearpktopts(opt, IPV6_HOPOPTS);
opt->ip6po_hbh = _MALLOC(hbhlen, M_IP6OPT, M_NOWAIT);
- if (opt->ip6po_hbh == NULL)
- return (ENOBUFS);
+ if (opt->ip6po_hbh == NULL) {
+ return ENOBUFS;
+ }
bcopy(hbh, opt->ip6po_hbh, hbhlen);
-
+ capture_exthdrstat_out = TRUE;
break;
}
int destlen;
error = suser(kauth_cred_get(), 0);
- if (error)
- return (EACCES);
+ if (error) {
+ return EACCES;
+ }
if (len == 0) {
ip6_clearpktopts(opt, optname);
- break; /* just remove the option */
+ break; /* just remove the option */
}
/* message length validation */
- if (len < sizeof (struct ip6_dest))
- return (EINVAL);
+ if (len < sizeof(struct ip6_dest)) {
+ return EINVAL;
+ }
dest = (struct ip6_dest *)(void *)buf;
destlen = (dest->ip6d_len + 1) << 3;
- if (len != destlen)
- return (EINVAL);
+ if (len != destlen) {
+ return EINVAL;
+ }
/*
* Determine the position that the destination options header
* RFC3542 solved the ambiguity by introducing
* separate ancillary data or option types.
*/
- if (opt->ip6po_rthdr == NULL)
+ if (opt->ip6po_rthdr == NULL) {
newdest = &opt->ip6po_dest1;
- else
+ } else {
newdest = &opt->ip6po_dest2;
+ }
break;
case IPV6_RTHDRDSTOPTS:
newdest = &opt->ip6po_dest1;
/* turn off the previous option, then set the new option. */
ip6_clearpktopts(opt, optname);
*newdest = _MALLOC(destlen, M_IP6OPT, M_NOWAIT);
- if (*newdest == NULL)
- return (ENOBUFS);
+ if (*newdest == NULL) {
+ return ENOBUFS;
+ }
bcopy(dest, *newdest, destlen);
+ capture_exthdrstat_out = TRUE;
break;
}
if (len == 0) {
ip6_clearpktopts(opt, IPV6_RTHDR);
- break; /* just remove the option */
+ break; /* just remove the option */
}
/* message length validation */
- if (len < sizeof (struct ip6_rthdr))
- return (EINVAL);
+ if (len < sizeof(struct ip6_rthdr)) {
+ return EINVAL;
+ }
rth = (struct ip6_rthdr *)(void *)buf;
rthlen = (rth->ip6r_len + 1) << 3;
- if (len != rthlen)
- return (EINVAL);
+ if (len != rthlen) {
+ return EINVAL;
+ }
switch (rth->ip6r_type) {
case IPV6_RTHDR_TYPE_0:
- if (rth->ip6r_len == 0) /* must contain one addr */
- return (EINVAL);
- if (rth->ip6r_len % 2) /* length must be even */
- return (EINVAL);
- if (rth->ip6r_len / 2 != rth->ip6r_segleft)
- return (EINVAL);
+ if (rth->ip6r_len == 0) { /* must contain one addr */
+ return EINVAL;
+ }
+ if (rth->ip6r_len % 2) { /* length must be even */
+ return EINVAL;
+ }
+ if (rth->ip6r_len / 2 != rth->ip6r_segleft) {
+ return EINVAL;
+ }
break;
default:
- return (EINVAL); /* not supported */
+ return EINVAL; /* not supported */
}
/* turn off the previous option */
ip6_clearpktopts(opt, IPV6_RTHDR);
opt->ip6po_rthdr = _MALLOC(rthlen, M_IP6OPT, M_NOWAIT);
- if (opt->ip6po_rthdr == NULL)
- return (ENOBUFS);
+ if (opt->ip6po_rthdr == NULL) {
+ return ENOBUFS;
+ }
bcopy(rth, opt->ip6po_rthdr, rthlen);
+ capture_exthdrstat_out = TRUE;
break;
}
case IPV6_USE_MIN_MTU:
- if (len != sizeof (int))
- return (EINVAL);
+ if (len != sizeof(int)) {
+ return EINVAL;
+ }
minmtupolicy = *(int *)(void *)buf;
if (minmtupolicy != IP6PO_MINMTU_MCASTONLY &&
minmtupolicy != IP6PO_MINMTU_DISABLE &&
minmtupolicy != IP6PO_MINMTU_ALL) {
- return (EINVAL);
+ return EINVAL;
}
opt->ip6po_minmtu = minmtupolicy;
break;
case IPV6_DONTFRAG:
- if (len != sizeof (int))
- return (EINVAL);
+ if (len != sizeof(int)) {
+ return EINVAL;
+ }
if (uproto == IPPROTO_TCP || *(int *)(void *)buf == 0) {
/*
break;
case IPV6_PREFER_TEMPADDR:
- if (len != sizeof (int))
- return (EINVAL);
+ if (len != sizeof(int)) {
+ return EINVAL;
+ }
preftemp = *(int *)(void *)buf;
if (preftemp != IP6PO_TEMPADDR_SYSTEM &&
preftemp != IP6PO_TEMPADDR_NOTPREFER &&
preftemp != IP6PO_TEMPADDR_PREFER) {
- return (EINVAL);
+ return EINVAL;
}
opt->ip6po_prefer_tempaddr = preftemp;
break;
default:
- return (ENOPROTOOPT);
+ return ENOPROTOOPT;
} /* end of switch */
- return (0);
+ if (capture_exthdrstat_out) {
+ if (uproto == IPPROTO_TCP) {
+ INC_ATOMIC_INT64_LIM(net_api_stats.nas_sock_inet6_stream_exthdr_out);
+ } else if (uproto == IPPROTO_UDP) {
+ INC_ATOMIC_INT64_LIM(net_api_stats.nas_sock_inet6_dgram_exthdr_out);
+ }
+ }
+
+ return 0;
}
/*
struct ip6_hdr *ip6;
struct in6_addr src;
- if (lo_ifp == NULL)
+ if (lo_ifp == NULL) {
return;
+ }
/*
* Copy the packet header as it's needed for the checksum.
*/
copym = m_copym_mode(m, 0, M_COPYALL, M_DONTWAIT, M_COPYM_COPY_HDR);
if (copym != NULL && ((copym->m_flags & M_EXT) ||
- copym->m_len < sizeof (struct ip6_hdr)))
- copym = m_pullup(copym, sizeof (struct ip6_hdr));
+ copym->m_len < sizeof(struct ip6_hdr))) {
+ copym = m_pullup(copym, sizeof(struct ip6_hdr));
+ }
- if (copym == NULL)
+ if (copym == NULL) {
return;
+ }
ip6 = mtod(copym, struct ip6_hdr *);
src = ip6->ip6_src;
in6_clearscope(&ip6->ip6_src);
in6_clearscope(&ip6->ip6_dst);
- if (copym->m_pkthdr.csum_flags & CSUM_DELAY_IPV6_DATA)
+ if (copym->m_pkthdr.csum_flags & CSUM_DELAY_IPV6_DATA) {
in6_delayed_cksum_offset(copym, 0, optlen, nxt0);
+ }
/*
* Stuff the 'real' ifp into the pkthdr, to be used in matching
struct in6_ifaddr *ia;
lck_rw_lock_shared(&in6_ifaddr_rwlock);
- for (ia = in6_ifaddrs; ia != NULL; ia = ia->ia_next) {
+ TAILQ_FOREACH(ia, IN6ADDR_HASH(&src), ia6_hash) {
IFA_LOCK_SPIN(&ia->ia_ifa);
/* compare against src addr with embedded scope */
if (IN6_ARE_ADDR_EQUAL(&ia->ia_addr.sin6_addr, &src)) {
}
lck_rw_done(&in6_ifaddr_rwlock);
}
- if (srcifp != NULL)
+ if (srcifp != NULL) {
ip6_setsrcifaddr_info(copym, srcifp->if_index, NULL);
+ }
ip6_setdstifaddr_info(copym, origifp->if_index, NULL);
dlil_output(lo_ifp, PF_INET6, copym, NULL, SA(dst), 0, NULL);
struct ip6_hdr *ip6;
ip6 = mtod(m, struct ip6_hdr *);
- if (m->m_len > sizeof (*ip6)) {
- MGETHDR(mh, M_DONTWAIT, MT_HEADER); /* MAC-OK */
+ if (m->m_len > sizeof(*ip6)) {
+ MGETHDR(mh, M_DONTWAIT, MT_HEADER); /* MAC-OK */
if (mh == NULL) {
m_freem(m);
- return (ENOBUFS);
+ return ENOBUFS;
}
M_COPY_PKTHDR(mh, m);
- MH_ALIGN(mh, sizeof (*ip6));
+ MH_ALIGN(mh, sizeof(*ip6));
m->m_flags &= ~M_PKTHDR;
- m->m_len -= sizeof (*ip6);
- m->m_data += sizeof (*ip6);
+ m->m_len -= sizeof(*ip6);
+ m->m_data += sizeof(*ip6);
mh->m_next = m;
m = mh;
- m->m_len = sizeof (*ip6);
- bcopy((caddr_t)ip6, mtod(m, caddr_t), sizeof (*ip6));
+ m->m_len = sizeof(*ip6);
+ bcopy((caddr_t)ip6, mtod(m, caddr_t), sizeof(*ip6));
}
exthdrs->ip6e_ip6 = m;
- return (0);
+ return 0;
}
static void
} else if (!(sw_csum & CSUM_DELAY_IPV6_DATA) &&
(hwcap & CSUM_PARTIAL)) {
/*
- * Partial checksum offload, ere), if no extension
- * headers, and TCP only (no UDP support, as the
- * hardware may not be able to convert +0 to
- * -0 (0xffff) per RFC1122 4.1.3.4.)
+ * Partial checksum offload, ere), if no extension headers,
+ * and TCP only (no UDP support, as the hardware may not be
+ * able to convert +0 to -0 (0xffff) per RFC1122 4.1.3.4.
+ * unless the interface supports "invert zero" capability.)
*/
if (hwcksum_tx && !tso &&
- (m->m_pkthdr.csum_flags & CSUM_TCPIPV6) &&
+ ((m->m_pkthdr.csum_flags & CSUM_TCPIPV6) ||
+ ((hwcap & CSUM_ZERO_INVERT) &&
+ (m->m_pkthdr.csum_flags & CSUM_ZERO_INVERT))) &&
tlen <= mtu) {
- uint16_t start = sizeof (struct ip6_hdr);
+ uint16_t start = sizeof(struct ip6_hdr);
uint16_t ulpoff =
m->m_pkthdr.csum_data & 0xffff;
m->m_pkthdr.csum_flags |=
{
int len;
- if (!in6p->in6p_outputopts)
- return (0);
+ if (!in6p->in6p_outputopts) {
+ return 0;
+ }
len = 0;
-#define elen(x) \
- (((struct ip6_ext *)(x)) ? \
+#define elen(x) \
+ (((struct ip6_ext *)(x)) ? \
(((struct ip6_ext *)(x))->ip6e_len + 1) << 3 : 0)
len += elen(in6p->in6p_outputopts->ip6po_hbh);
}
len += elen(in6p->in6p_outputopts->ip6po_rthdr);
len += elen(in6p->in6p_outputopts->ip6po_dest2);
- return (len);
+ return len;
#undef elen
}
+
+static int
+sysctl_reset_ip6_output_stats SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int error, i;
+
+ i = ip6_output_measure;
+ error = sysctl_handle_int(oidp, &i, 0, req);
+ if (error || req->newptr == USER_ADDR_NULL) {
+ goto done;
+ }
+ /* impose bounds */
+ if (i < 0 || i > 1) {
+ error = EINVAL;
+ goto done;
+ }
+ if (ip6_output_measure != i && i == 1) {
+ net_perf_initialize(&net_perf, ip6_output_measure_bins);
+ }
+ ip6_output_measure = i;
+done:
+ return error;
+}
+
+static int
+sysctl_ip6_output_measure_bins SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int error;
+ uint64_t i;
+
+ i = ip6_output_measure_bins;
+ error = sysctl_handle_quad(oidp, &i, 0, req);
+ if (error || req->newptr == USER_ADDR_NULL) {
+ goto done;
+ }
+ /* validate data */
+ if (!net_perf_validate_bins(i)) {
+ error = EINVAL;
+ goto done;
+ }
+ ip6_output_measure_bins = i;
+done:
+ return error;
+}
+
+static int
+sysctl_ip6_output_getperf SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp, arg1, arg2)
+ if (req->oldptr == USER_ADDR_NULL) {
+ req->oldlen = (size_t)sizeof(struct ipstat);
+ }
+
+ return SYSCTL_OUT(req, &net_perf, MIN(sizeof(net_perf), req->oldlen));
+}
projects / apple / xnu.git / blobdiff