diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c index 2cfd3c544c72..50b5b5a00a96 100644 --- a/sys/netinet/ip_input.c +++ b/sys/netinet/ip_input.c @@ -1,1443 +1,1463 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1986, 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)ip_input.c 8.2 (Berkeley) 1/4/94 */ #include __FBSDID("$FreeBSD$"); #include "opt_bootp.h" #include "opt_inet.h" #include "opt_ipstealth.h" #include "opt_ipsec.h" #include "opt_route.h" #include "opt_rss.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CTASSERT CTASSERT(sizeof(struct ip) == 20); #endif /* IP reassembly functions are defined in ip_reass.c. */ extern void ipreass_init(void); extern void ipreass_drain(void); extern void ipreass_slowtimo(void); #ifdef VIMAGE extern void ipreass_destroy(void); #endif struct rmlock in_ifaddr_lock; RM_SYSINIT(in_ifaddr_lock, &in_ifaddr_lock, "in_ifaddr_lock"); VNET_DEFINE(int, rsvp_on); VNET_DEFINE(int, ipforwarding); SYSCTL_INT(_net_inet_ip, IPCTL_FORWARDING, forwarding, CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipforwarding), 0, "Enable IP forwarding between interfaces"); /* * Respond with an ICMP host redirect when we forward a packet out of * the same interface on which it was received. See RFC 792. */ VNET_DEFINE(int, ipsendredirects) = 1; SYSCTL_INT(_net_inet_ip, IPCTL_SENDREDIRECTS, redirect, CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipsendredirects), 0, "Enable sending IP redirects"); /* * XXX - Setting ip_checkinterface mostly implements the receive side of * the Strong ES model described in RFC 1122, but since the routing table * and transmit implementation do not implement the Strong ES model, * setting this to 1 results in an odd hybrid. * * XXX - ip_checkinterface currently must be disabled if you use ipnat * to translate the destination address to another local interface. * * XXX - ip_checkinterface must be disabled if you add IP aliases * to the loopback interface instead of the interface where the * packets for those addresses are received. */ VNET_DEFINE_STATIC(int, ip_checkinterface); #define V_ip_checkinterface VNET(ip_checkinterface) SYSCTL_INT(_net_inet_ip, OID_AUTO, check_interface, CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip_checkinterface), 0, "Verify packet arrives on correct interface"); -VNET_DEFINE(pfil_head_t, inet_pfil_head); /* Packet filter hooks */ +/* Packet filter hooks */ +VNET_DEFINE(pfil_head_t, inet_pfil_head); +VNET_DEFINE(pfil_head_t, inet_local_pfil_head); static struct netisr_handler ip_nh = { .nh_name = "ip", .nh_handler = ip_input, .nh_proto = NETISR_IP, #ifdef RSS .nh_m2cpuid = rss_soft_m2cpuid_v4, .nh_policy = NETISR_POLICY_CPU, .nh_dispatch = NETISR_DISPATCH_HYBRID, #else .nh_policy = NETISR_POLICY_FLOW, #endif }; #ifdef RSS /* * Directly dispatched frames are currently assumed * to have a flowid already calculated. * * It should likely have something that assert it * actually has valid flow details. */ static struct netisr_handler ip_direct_nh = { .nh_name = "ip_direct", .nh_handler = ip_direct_input, .nh_proto = NETISR_IP_DIRECT, .nh_m2cpuid = rss_soft_m2cpuid_v4, .nh_policy = NETISR_POLICY_CPU, .nh_dispatch = NETISR_DISPATCH_HYBRID, }; #endif extern struct domain inetdomain; extern struct protosw inetsw[]; u_char ip_protox[IPPROTO_MAX]; VNET_DEFINE(struct in_ifaddrhead, in_ifaddrhead); /* first inet address */ VNET_DEFINE(struct in_ifaddrhashhead *, in_ifaddrhashtbl); /* inet addr hash table */ VNET_DEFINE(u_long, in_ifaddrhmask); /* mask for hash table */ #ifdef IPCTL_DEFMTU SYSCTL_INT(_net_inet_ip, IPCTL_DEFMTU, mtu, CTLFLAG_RW, &ip_mtu, 0, "Default MTU"); #endif #ifdef IPSTEALTH VNET_DEFINE(int, ipstealth); SYSCTL_INT(_net_inet_ip, OID_AUTO, stealth, CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ipstealth), 0, "IP stealth mode, no TTL decrementation on forwarding"); #endif /* * IP statistics are stored in the "array" of counter(9)s. */ VNET_PCPUSTAT_DEFINE(struct ipstat, ipstat); VNET_PCPUSTAT_SYSINIT(ipstat); SYSCTL_VNET_PCPUSTAT(_net_inet_ip, IPCTL_STATS, stats, struct ipstat, ipstat, "IP statistics (struct ipstat, netinet/ip_var.h)"); #ifdef VIMAGE VNET_PCPUSTAT_SYSUNINIT(ipstat); #endif /* VIMAGE */ /* * Kernel module interface for updating ipstat. The argument is an index * into ipstat treated as an array. */ void kmod_ipstat_inc(int statnum) { counter_u64_add(VNET(ipstat)[statnum], 1); } void kmod_ipstat_dec(int statnum) { counter_u64_add(VNET(ipstat)[statnum], -1); } static int sysctl_netinet_intr_queue_maxlen(SYSCTL_HANDLER_ARGS) { int error, qlimit; netisr_getqlimit(&ip_nh, &qlimit); error = sysctl_handle_int(oidp, &qlimit, 0, req); if (error || !req->newptr) return (error); if (qlimit < 1) return (EINVAL); return (netisr_setqlimit(&ip_nh, qlimit)); } SYSCTL_PROC(_net_inet_ip, IPCTL_INTRQMAXLEN, intr_queue_maxlen, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 0, sysctl_netinet_intr_queue_maxlen, "I", "Maximum size of the IP input queue"); static int sysctl_netinet_intr_queue_drops(SYSCTL_HANDLER_ARGS) { u_int64_t qdrops_long; int error, qdrops; netisr_getqdrops(&ip_nh, &qdrops_long); qdrops = qdrops_long; error = sysctl_handle_int(oidp, &qdrops, 0, req); if (error || !req->newptr) return (error); if (qdrops != 0) return (EINVAL); netisr_clearqdrops(&ip_nh); return (0); } SYSCTL_PROC(_net_inet_ip, IPCTL_INTRQDROPS, intr_queue_drops, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 0, sysctl_netinet_intr_queue_drops, "I", "Number of packets dropped from the IP input queue"); #ifdef RSS static int sysctl_netinet_intr_direct_queue_maxlen(SYSCTL_HANDLER_ARGS) { int error, qlimit; netisr_getqlimit(&ip_direct_nh, &qlimit); error = sysctl_handle_int(oidp, &qlimit, 0, req); if (error || !req->newptr) return (error); if (qlimit < 1) return (EINVAL); return (netisr_setqlimit(&ip_direct_nh, qlimit)); } SYSCTL_PROC(_net_inet_ip, IPCTL_INTRDQMAXLEN, intr_direct_queue_maxlen, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 0, sysctl_netinet_intr_direct_queue_maxlen, "I", "Maximum size of the IP direct input queue"); static int sysctl_netinet_intr_direct_queue_drops(SYSCTL_HANDLER_ARGS) { u_int64_t qdrops_long; int error, qdrops; netisr_getqdrops(&ip_direct_nh, &qdrops_long); qdrops = qdrops_long; error = sysctl_handle_int(oidp, &qdrops, 0, req); if (error || !req->newptr) return (error); if (qdrops != 0) return (EINVAL); netisr_clearqdrops(&ip_direct_nh); return (0); } SYSCTL_PROC(_net_inet_ip, IPCTL_INTRDQDROPS, intr_direct_queue_drops, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 0, sysctl_netinet_intr_direct_queue_drops, "I", "Number of packets dropped from the IP direct input queue"); #endif /* RSS */ /* * IP initialization: fill in IP protocol switch table. * All protocols not implemented in kernel go to raw IP protocol handler. */ void ip_init(void) { struct pfil_head_args args; struct protosw *pr; int i; CK_STAILQ_INIT(&V_in_ifaddrhead); V_in_ifaddrhashtbl = hashinit(INADDR_NHASH, M_IFADDR, &V_in_ifaddrhmask); /* Initialize IP reassembly queue. */ ipreass_init(); /* Initialize packet filter hooks. */ args.pa_version = PFIL_VERSION; args.pa_flags = PFIL_IN | PFIL_OUT; args.pa_type = PFIL_TYPE_IP4; args.pa_headname = PFIL_INET_NAME; V_inet_pfil_head = pfil_head_register(&args); + args.pa_flags = PFIL_OUT; + args.pa_headname = PFIL_INET_LOCAL_NAME; + V_inet_local_pfil_head = pfil_head_register(&args); + if (hhook_head_register(HHOOK_TYPE_IPSEC_IN, AF_INET, &V_ipsec_hhh_in[HHOOK_IPSEC_INET], HHOOK_WAITOK | HHOOK_HEADISINVNET) != 0) printf("%s: WARNING: unable to register input helper hook\n", __func__); if (hhook_head_register(HHOOK_TYPE_IPSEC_OUT, AF_INET, &V_ipsec_hhh_out[HHOOK_IPSEC_INET], HHOOK_WAITOK | HHOOK_HEADISINVNET) != 0) printf("%s: WARNING: unable to register output helper hook\n", __func__); /* Skip initialization of globals for non-default instances. */ #ifdef VIMAGE if (!IS_DEFAULT_VNET(curvnet)) { netisr_register_vnet(&ip_nh); #ifdef RSS netisr_register_vnet(&ip_direct_nh); #endif return; } #endif pr = pffindproto(PF_INET, IPPROTO_RAW, SOCK_RAW); if (pr == NULL) panic("ip_init: PF_INET not found"); /* Initialize the entire ip_protox[] array to IPPROTO_RAW. */ for (i = 0; i < IPPROTO_MAX; i++) ip_protox[i] = pr - inetsw; /* * Cycle through IP protocols and put them into the appropriate place * in ip_protox[]. */ for (pr = inetdomain.dom_protosw; pr < inetdomain.dom_protoswNPROTOSW; pr++) if (pr->pr_domain->dom_family == PF_INET && pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW) { /* Be careful to only index valid IP protocols. */ if (pr->pr_protocol < IPPROTO_MAX) ip_protox[pr->pr_protocol] = pr - inetsw; } netisr_register(&ip_nh); #ifdef RSS netisr_register(&ip_direct_nh); #endif } #ifdef VIMAGE static void ip_destroy(void *unused __unused) { int error; #ifdef RSS netisr_unregister_vnet(&ip_direct_nh); #endif netisr_unregister_vnet(&ip_nh); pfil_head_unregister(V_inet_pfil_head); error = hhook_head_deregister(V_ipsec_hhh_in[HHOOK_IPSEC_INET]); if (error != 0) { printf("%s: WARNING: unable to deregister input helper hook " "type HHOOK_TYPE_IPSEC_IN, id HHOOK_IPSEC_INET: " "error %d returned\n", __func__, error); } error = hhook_head_deregister(V_ipsec_hhh_out[HHOOK_IPSEC_INET]); if (error != 0) { printf("%s: WARNING: unable to deregister output helper hook " "type HHOOK_TYPE_IPSEC_OUT, id HHOOK_IPSEC_INET: " "error %d returned\n", __func__, error); } /* Remove the IPv4 addresses from all interfaces. */ in_ifscrub_all(); /* Make sure the IPv4 routes are gone as well. */ rib_flush_routes_family(AF_INET); /* Destroy IP reassembly queue. */ ipreass_destroy(); /* Cleanup in_ifaddr hash table; should be empty. */ hashdestroy(V_in_ifaddrhashtbl, M_IFADDR, V_in_ifaddrhmask); } VNET_SYSUNINIT(ip, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, ip_destroy, NULL); #endif #ifdef RSS /* * IP direct input routine. * * This is called when reinjecting completed fragments where * all of the previous checking and book-keeping has been done. */ void ip_direct_input(struct mbuf *m) { struct ip *ip; int hlen; ip = mtod(m, struct ip *); hlen = ip->ip_hl << 2; #if defined(IPSEC) || defined(IPSEC_SUPPORT) if (IPSEC_ENABLED(ipv4)) { if (IPSEC_INPUT(ipv4, m, hlen, ip->ip_p) != 0) return; } #endif /* IPSEC */ IPSTAT_INC(ips_delivered); (*inetsw[ip_protox[ip->ip_p]].pr_input)(&m, &hlen, ip->ip_p); return; } #endif /* * Ip input routine. Checksum and byte swap header. If fragmented * try to reassemble. Process options. Pass to next level. */ void ip_input(struct mbuf *m) { struct rm_priotracker in_ifa_tracker; struct ip *ip = NULL; struct in_ifaddr *ia = NULL; struct ifaddr *ifa; struct ifnet *ifp; int checkif, hlen = 0; uint16_t sum, ip_len; int dchg = 0; /* dest changed after fw */ struct in_addr odst; /* original dst address */ M_ASSERTPKTHDR(m); NET_EPOCH_ASSERT(); if (m->m_flags & M_FASTFWD_OURS) { m->m_flags &= ~M_FASTFWD_OURS; /* Set up some basics that will be used later. */ ip = mtod(m, struct ip *); hlen = ip->ip_hl << 2; ip_len = ntohs(ip->ip_len); goto ours; } IPSTAT_INC(ips_total); if (m->m_pkthdr.len < sizeof(struct ip)) goto tooshort; if (m->m_len < sizeof (struct ip) && (m = m_pullup(m, sizeof (struct ip))) == NULL) { IPSTAT_INC(ips_toosmall); return; } ip = mtod(m, struct ip *); if (ip->ip_v != IPVERSION) { IPSTAT_INC(ips_badvers); goto bad; } hlen = ip->ip_hl << 2; if (hlen < sizeof(struct ip)) { /* minimum header length */ IPSTAT_INC(ips_badhlen); goto bad; } if (hlen > m->m_len) { if ((m = m_pullup(m, hlen)) == NULL) { IPSTAT_INC(ips_badhlen); return; } ip = mtod(m, struct ip *); } IP_PROBE(receive, NULL, NULL, ip, m->m_pkthdr.rcvif, ip, NULL); /* IN_LOOPBACK must not appear on the wire - RFC1122 */ ifp = m->m_pkthdr.rcvif; if (IN_LOOPBACK(ntohl(ip->ip_dst.s_addr)) || IN_LOOPBACK(ntohl(ip->ip_src.s_addr))) { if ((ifp->if_flags & IFF_LOOPBACK) == 0) { IPSTAT_INC(ips_badaddr); goto bad; } } /* The unspecified address can appear only as a src address - RFC1122 */ if (__predict_false(ntohl(ip->ip_dst.s_addr) == INADDR_ANY)) { IPSTAT_INC(ips_badaddr); goto bad; } if (m->m_pkthdr.csum_flags & CSUM_IP_CHECKED) { sum = !(m->m_pkthdr.csum_flags & CSUM_IP_VALID); } else { if (hlen == sizeof(struct ip)) { sum = in_cksum_hdr(ip); } else { sum = in_cksum(m, hlen); } } if (sum) { IPSTAT_INC(ips_badsum); goto bad; } #ifdef ALTQ if (altq_input != NULL && (*altq_input)(m, AF_INET) == 0) /* packet is dropped by traffic conditioner */ return; #endif ip_len = ntohs(ip->ip_len); if (ip_len < hlen) { IPSTAT_INC(ips_badlen); goto bad; } /* * Check that the amount of data in the buffers * is as at least much as the IP header would have us expect. * Trim mbufs if longer than we expect. * Drop packet if shorter than we expect. */ if (m->m_pkthdr.len < ip_len) { tooshort: IPSTAT_INC(ips_tooshort); goto bad; } if (m->m_pkthdr.len > ip_len) { if (m->m_len == m->m_pkthdr.len) { m->m_len = ip_len; m->m_pkthdr.len = ip_len; } else m_adj(m, ip_len - m->m_pkthdr.len); } /* * Try to forward the packet, but if we fail continue. * ip_tryforward() may generate redirects these days. * XXX the logic below falling through to normal processing * if redirects are required should be revisited as well. * ip_tryforward() does inbound and outbound packet firewall * processing. If firewall has decided that destination becomes * our local address, it sets M_FASTFWD_OURS flag. In this * case skip another inbound firewall processing and update * ip pointer. */ if (V_ipforwarding != 0 #if defined(IPSEC) || defined(IPSEC_SUPPORT) && (!IPSEC_ENABLED(ipv4) || IPSEC_CAPS(ipv4, m, IPSEC_CAP_OPERABLE) == 0) #endif ) { /* * ip_dooptions() was run so we can ignore the source route (or * any IP options case) case for redirects in ip_tryforward(). */ if ((m = ip_tryforward(m)) == NULL) return; if (m->m_flags & M_FASTFWD_OURS) { m->m_flags &= ~M_FASTFWD_OURS; ip = mtod(m, struct ip *); goto ours; } } #if defined(IPSEC) || defined(IPSEC_SUPPORT) /* * Bypass packet filtering for packets previously handled by IPsec. */ if (IPSEC_ENABLED(ipv4) && IPSEC_CAPS(ipv4, m, IPSEC_CAP_BYPASS_FILTER) != 0) goto passin; #endif /* * Run through list of hooks for input packets. * * NB: Beware of the destination address changing (e.g. * by NAT rewriting). When this happens, tell * ip_forward to do the right thing. */ /* Jump over all PFIL processing if hooks are not active. */ if (!PFIL_HOOKED_IN(V_inet_pfil_head)) goto passin; odst = ip->ip_dst; if (pfil_run_hooks(V_inet_pfil_head, &m, ifp, PFIL_IN, NULL) != PFIL_PASS) return; if (m == NULL) /* consumed by filter */ return; ip = mtod(m, struct ip *); dchg = (odst.s_addr != ip->ip_dst.s_addr); ifp = m->m_pkthdr.rcvif; if (m->m_flags & M_FASTFWD_OURS) { m->m_flags &= ~M_FASTFWD_OURS; goto ours; } if (m->m_flags & M_IP_NEXTHOP) { if (m_tag_find(m, PACKET_TAG_IPFORWARD, NULL) != NULL) { /* * Directly ship the packet on. This allows * forwarding packets originally destined to us * to some other directly connected host. */ ip_forward(m, 1); return; } } passin: /* * Process options and, if not destined for us, * ship it on. ip_dooptions returns 1 when an * error was detected (causing an icmp message * to be sent and the original packet to be freed). */ if (hlen > sizeof (struct ip) && ip_dooptions(m, 0)) return; /* greedy RSVP, snatches any PATH packet of the RSVP protocol and no * matter if it is destined to another node, or whether it is * a multicast one, RSVP wants it! and prevents it from being forwarded * anywhere else. Also checks if the rsvp daemon is running before * grabbing the packet. */ if (V_rsvp_on && ip->ip_p==IPPROTO_RSVP) goto ours; /* * Check our list of addresses, to see if the packet is for us. * If we don't have any addresses, assume any unicast packet * we receive might be for us (and let the upper layers deal * with it). */ if (CK_STAILQ_EMPTY(&V_in_ifaddrhead) && (m->m_flags & (M_MCAST|M_BCAST)) == 0) goto ours; /* * Enable a consistency check between the destination address * and the arrival interface for a unicast packet (the RFC 1122 * strong ES model) if IP forwarding is disabled and the packet * is not locally generated and the packet is not subject to * 'ipfw fwd'. * * XXX - Checking also should be disabled if the destination * address is ipnat'ed to a different interface. * * XXX - Checking is incompatible with IP aliases added * to the loopback interface instead of the interface where * the packets are received. * * XXX - This is the case for carp vhost IPs as well so we * insert a workaround. If the packet got here, we already * checked with carp_iamatch() and carp_forus(). */ checkif = V_ip_checkinterface && (V_ipforwarding == 0) && ifp != NULL && ((ifp->if_flags & IFF_LOOPBACK) == 0) && ifp->if_carp == NULL && (dchg == 0); /* * Check for exact addresses in the hash bucket. */ IN_IFADDR_RLOCK(&in_ifa_tracker); LIST_FOREACH(ia, INADDR_HASH(ip->ip_dst.s_addr), ia_hash) { /* * If the address matches, verify that the packet * arrived via the correct interface if checking is * enabled. */ if (IA_SIN(ia)->sin_addr.s_addr == ip->ip_dst.s_addr && (!checkif || ia->ia_ifp == ifp)) { counter_u64_add(ia->ia_ifa.ifa_ipackets, 1); counter_u64_add(ia->ia_ifa.ifa_ibytes, m->m_pkthdr.len); IN_IFADDR_RUNLOCK(&in_ifa_tracker); goto ours; } } IN_IFADDR_RUNLOCK(&in_ifa_tracker); /* * Check for broadcast addresses. * * Only accept broadcast packets that arrive via the matching * interface. Reception of forwarded directed broadcasts would * be handled via ip_forward() and ether_output() with the loopback * into the stack for SIMPLEX interfaces handled by ether_output(). */ if (ifp != NULL && ifp->if_flags & IFF_BROADCAST) { CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { if (ifa->ifa_addr->sa_family != AF_INET) continue; ia = ifatoia(ifa); if (satosin(&ia->ia_broadaddr)->sin_addr.s_addr == ip->ip_dst.s_addr) { counter_u64_add(ia->ia_ifa.ifa_ipackets, 1); counter_u64_add(ia->ia_ifa.ifa_ibytes, m->m_pkthdr.len); goto ours; } #ifdef BOOTP_COMPAT if (IA_SIN(ia)->sin_addr.s_addr == INADDR_ANY) { counter_u64_add(ia->ia_ifa.ifa_ipackets, 1); counter_u64_add(ia->ia_ifa.ifa_ibytes, m->m_pkthdr.len); goto ours; } #endif } ia = NULL; } if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) { /* * RFC 3927 2.7: Do not forward multicast packets from * IN_LINKLOCAL. */ if (V_ip_mrouter && !IN_LINKLOCAL(ntohl(ip->ip_src.s_addr))) { /* * If we are acting as a multicast router, all * incoming multicast packets are passed to the * kernel-level multicast forwarding function. * The packet is returned (relatively) intact; if * ip_mforward() returns a non-zero value, the packet * must be discarded, else it may be accepted below. */ if (ip_mforward && ip_mforward(ip, ifp, m, 0) != 0) { IPSTAT_INC(ips_cantforward); m_freem(m); return; } /* * The process-level routing daemon needs to receive * all multicast IGMP packets, whether or not this * host belongs to their destination groups. */ if (ip->ip_p == IPPROTO_IGMP) goto ours; IPSTAT_INC(ips_forward); } /* * Assume the packet is for us, to avoid prematurely taking * a lock on the in_multi hash. Protocols must perform * their own filtering and update statistics accordingly. */ goto ours; } if (ip->ip_dst.s_addr == (u_long)INADDR_BROADCAST) goto ours; if (ip->ip_dst.s_addr == INADDR_ANY) goto ours; /* RFC 3927 2.7: Do not forward packets to or from IN_LINKLOCAL. */ if (IN_LINKLOCAL(ntohl(ip->ip_dst.s_addr)) || IN_LINKLOCAL(ntohl(ip->ip_src.s_addr))) { IPSTAT_INC(ips_cantforward); m_freem(m); return; } /* * Not for us; forward if possible and desirable. */ if (V_ipforwarding == 0) { IPSTAT_INC(ips_cantforward); m_freem(m); } else { ip_forward(m, dchg); } return; ours: #ifdef IPSTEALTH /* * IPSTEALTH: Process non-routing options only * if the packet is destined for us. */ if (V_ipstealth && hlen > sizeof (struct ip) && ip_dooptions(m, 1)) return; #endif /* IPSTEALTH */ + /* + * We are going to ship the packet to the local protocol stack. Call the + * filter again for this 'output' action, allowing redirect-like rules + * to adjust the source address. + */ + if (PFIL_HOOKED_OUT(V_inet_local_pfil_head)) { + if (pfil_run_hooks(V_inet_local_pfil_head, &m, V_loif, PFIL_OUT, NULL) != + PFIL_PASS) + return; + if (m == NULL) /* consumed by filter */ + return; + ip = mtod(m, struct ip *); + } + /* * Attempt reassembly; if it succeeds, proceed. * ip_reass() will return a different mbuf. */ if (ip->ip_off & htons(IP_MF | IP_OFFMASK)) { /* XXXGL: shouldn't we save & set m_flags? */ m = ip_reass(m); if (m == NULL) return; ip = mtod(m, struct ip *); /* Get the header length of the reassembled packet */ hlen = ip->ip_hl << 2; } #if defined(IPSEC) || defined(IPSEC_SUPPORT) if (IPSEC_ENABLED(ipv4)) { if (IPSEC_INPUT(ipv4, m, hlen, ip->ip_p) != 0) return; } #endif /* IPSEC */ /* * Switch out to protocol's input routine. */ IPSTAT_INC(ips_delivered); (*inetsw[ip_protox[ip->ip_p]].pr_input)(&m, &hlen, ip->ip_p); return; bad: m_freem(m); } /* * IP timer processing; * if a timer expires on a reassembly * queue, discard it. */ void ip_slowtimo(void) { VNET_ITERATOR_DECL(vnet_iter); VNET_LIST_RLOCK_NOSLEEP(); VNET_FOREACH(vnet_iter) { CURVNET_SET(vnet_iter); ipreass_slowtimo(); CURVNET_RESTORE(); } VNET_LIST_RUNLOCK_NOSLEEP(); } void ip_drain(void) { VNET_ITERATOR_DECL(vnet_iter); VNET_LIST_RLOCK_NOSLEEP(); VNET_FOREACH(vnet_iter) { CURVNET_SET(vnet_iter); ipreass_drain(); CURVNET_RESTORE(); } VNET_LIST_RUNLOCK_NOSLEEP(); } /* * The protocol to be inserted into ip_protox[] must be already registered * in inetsw[], either statically or through pf_proto_register(). */ int ipproto_register(short ipproto) { struct protosw *pr; /* Sanity checks. */ if (ipproto <= 0 || ipproto >= IPPROTO_MAX) return (EPROTONOSUPPORT); /* * The protocol slot must not be occupied by another protocol * already. An index pointing to IPPROTO_RAW is unused. */ pr = pffindproto(PF_INET, IPPROTO_RAW, SOCK_RAW); if (pr == NULL) return (EPFNOSUPPORT); if (ip_protox[ipproto] != pr - inetsw) /* IPPROTO_RAW */ return (EEXIST); /* Find the protocol position in inetsw[] and set the index. */ for (pr = inetdomain.dom_protosw; pr < inetdomain.dom_protoswNPROTOSW; pr++) { if (pr->pr_domain->dom_family == PF_INET && pr->pr_protocol && pr->pr_protocol == ipproto) { ip_protox[pr->pr_protocol] = pr - inetsw; return (0); } } return (EPROTONOSUPPORT); } int ipproto_unregister(short ipproto) { struct protosw *pr; /* Sanity checks. */ if (ipproto <= 0 || ipproto >= IPPROTO_MAX) return (EPROTONOSUPPORT); /* Check if the protocol was indeed registered. */ pr = pffindproto(PF_INET, IPPROTO_RAW, SOCK_RAW); if (pr == NULL) return (EPFNOSUPPORT); if (ip_protox[ipproto] == pr - inetsw) /* IPPROTO_RAW */ return (ENOENT); /* Reset the protocol slot to IPPROTO_RAW. */ ip_protox[ipproto] = pr - inetsw; return (0); } u_char inetctlerrmap[PRC_NCMDS] = { 0, 0, 0, 0, 0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH, EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED, EMSGSIZE, EHOSTUNREACH, 0, 0, 0, 0, EHOSTUNREACH, 0, ENOPROTOOPT, ECONNREFUSED }; /* * Forward a packet. If some error occurs return the sender * an icmp packet. Note we can't always generate a meaningful * icmp message because icmp doesn't have a large enough repertoire * of codes and types. * * If not forwarding, just drop the packet. This could be confusing * if ipforwarding was zero but some routing protocol was advancing * us as a gateway to somewhere. However, we must let the routing * protocol deal with that. * * The srcrt parameter indicates whether the packet is being forwarded * via a source route. */ void ip_forward(struct mbuf *m, int srcrt) { struct ip *ip = mtod(m, struct ip *); struct in_ifaddr *ia; struct mbuf *mcopy; struct sockaddr_in *sin; struct in_addr dest; struct route ro; uint32_t flowid; int error, type = 0, code = 0, mtu = 0; NET_EPOCH_ASSERT(); if (m->m_flags & (M_BCAST|M_MCAST) || in_canforward(ip->ip_dst) == 0) { IPSTAT_INC(ips_cantforward); m_freem(m); return; } if ( #ifdef IPSTEALTH V_ipstealth == 0 && #endif ip->ip_ttl <= IPTTLDEC) { icmp_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, 0, 0); return; } bzero(&ro, sizeof(ro)); sin = (struct sockaddr_in *)&ro.ro_dst; sin->sin_family = AF_INET; sin->sin_len = sizeof(*sin); sin->sin_addr = ip->ip_dst; flowid = m->m_pkthdr.flowid; ro.ro_nh = fib4_lookup(M_GETFIB(m), ip->ip_dst, 0, NHR_REF, flowid); if (ro.ro_nh != NULL) { ia = ifatoia(ro.ro_nh->nh_ifa); } else ia = NULL; /* * Save the IP header and at most 8 bytes of the payload, * in case we need to generate an ICMP message to the src. * * XXX this can be optimized a lot by saving the data in a local * buffer on the stack (72 bytes at most), and only allocating the * mbuf if really necessary. The vast majority of the packets * are forwarded without having to send an ICMP back (either * because unnecessary, or because rate limited), so we are * really we are wasting a lot of work here. * * We don't use m_copym() because it might return a reference * to a shared cluster. Both this function and ip_output() * assume exclusive access to the IP header in `m', so any * data in a cluster may change before we reach icmp_error(). */ mcopy = m_gethdr(M_NOWAIT, m->m_type); if (mcopy != NULL && !m_dup_pkthdr(mcopy, m, M_NOWAIT)) { /* * It's probably ok if the pkthdr dup fails (because * the deep copy of the tag chain failed), but for now * be conservative and just discard the copy since * code below may some day want the tags. */ m_free(mcopy); mcopy = NULL; } if (mcopy != NULL) { mcopy->m_len = min(ntohs(ip->ip_len), M_TRAILINGSPACE(mcopy)); mcopy->m_pkthdr.len = mcopy->m_len; m_copydata(m, 0, mcopy->m_len, mtod(mcopy, caddr_t)); } #ifdef IPSTEALTH if (V_ipstealth == 0) #endif ip->ip_ttl -= IPTTLDEC; #if defined(IPSEC) || defined(IPSEC_SUPPORT) if (IPSEC_ENABLED(ipv4)) { if ((error = IPSEC_FORWARD(ipv4, m)) != 0) { /* mbuf consumed by IPsec */ RO_NHFREE(&ro); m_freem(mcopy); if (error != EINPROGRESS) IPSTAT_INC(ips_cantforward); return; } /* No IPsec processing required */ } #endif /* IPSEC */ /* * If forwarding packet using same interface that it came in on, * perhaps should send a redirect to sender to shortcut a hop. * Only send redirect if source is sending directly to us, * and if packet was not source routed (or has any options). * Also, don't send redirect if forwarding using a default route * or a route modified by a redirect. */ dest.s_addr = 0; if (!srcrt && V_ipsendredirects && ia != NULL && ia->ia_ifp == m->m_pkthdr.rcvif) { struct nhop_object *nh; nh = ro.ro_nh; if (nh != NULL && ((nh->nh_flags & (NHF_REDIRECT|NHF_DEFAULT)) == 0)) { struct in_ifaddr *nh_ia = (struct in_ifaddr *)(nh->nh_ifa); u_long src = ntohl(ip->ip_src.s_addr); if (nh_ia != NULL && (src & nh_ia->ia_subnetmask) == nh_ia->ia_subnet) { /* Router requirements says to only send host redirects */ type = ICMP_REDIRECT; code = ICMP_REDIRECT_HOST; if (nh->nh_flags & NHF_GATEWAY) { if (nh->gw_sa.sa_family == AF_INET) dest.s_addr = nh->gw4_sa.sin_addr.s_addr; else /* Do not redirect in case gw is AF_INET6 */ type = 0; } else dest.s_addr = ip->ip_dst.s_addr; } } } error = ip_output(m, NULL, &ro, IP_FORWARDING, NULL, NULL); if (error == EMSGSIZE && ro.ro_nh) mtu = ro.ro_nh->nh_mtu; RO_NHFREE(&ro); if (error) IPSTAT_INC(ips_cantforward); else { IPSTAT_INC(ips_forward); if (type) IPSTAT_INC(ips_redirectsent); else { if (mcopy) m_freem(mcopy); return; } } if (mcopy == NULL) return; switch (error) { case 0: /* forwarded, but need redirect */ /* type, code set above */ break; case ENETUNREACH: case EHOSTUNREACH: case ENETDOWN: case EHOSTDOWN: default: type = ICMP_UNREACH; code = ICMP_UNREACH_HOST; break; case EMSGSIZE: type = ICMP_UNREACH; code = ICMP_UNREACH_NEEDFRAG; /* * If the MTU was set before make sure we are below the * interface MTU. * If the MTU wasn't set before use the interface mtu or * fall back to the next smaller mtu step compared to the * current packet size. */ if (mtu != 0) { if (ia != NULL) mtu = min(mtu, ia->ia_ifp->if_mtu); } else { if (ia != NULL) mtu = ia->ia_ifp->if_mtu; else mtu = ip_next_mtu(ntohs(ip->ip_len), 0); } IPSTAT_INC(ips_cantfrag); break; case ENOBUFS: case EACCES: /* ipfw denied packet */ m_freem(mcopy); return; } icmp_error(mcopy, type, code, dest.s_addr, mtu); } #define CHECK_SO_CT(sp, ct) \ (((sp->so_options & SO_TIMESTAMP) && (sp->so_ts_clock == ct)) ? 1 : 0) void ip_savecontrol(struct inpcb *inp, struct mbuf **mp, struct ip *ip, struct mbuf *m) { bool stamped; stamped = false; if ((inp->inp_socket->so_options & SO_BINTIME) || CHECK_SO_CT(inp->inp_socket, SO_TS_BINTIME)) { struct bintime boottimebin, bt; struct timespec ts1; if ((m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) { mbuf_tstmp2timespec(m, &ts1); timespec2bintime(&ts1, &bt); getboottimebin(&boottimebin); bintime_add(&bt, &boottimebin); } else { bintime(&bt); } *mp = sbcreatecontrol((caddr_t)&bt, sizeof(bt), SCM_BINTIME, SOL_SOCKET); if (*mp != NULL) { mp = &(*mp)->m_next; stamped = true; } } if (CHECK_SO_CT(inp->inp_socket, SO_TS_REALTIME_MICRO)) { struct bintime boottimebin, bt1; struct timespec ts1; struct timeval tv; if ((m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) { mbuf_tstmp2timespec(m, &ts1); timespec2bintime(&ts1, &bt1); getboottimebin(&boottimebin); bintime_add(&bt1, &boottimebin); bintime2timeval(&bt1, &tv); } else { microtime(&tv); } *mp = sbcreatecontrol((caddr_t)&tv, sizeof(tv), SCM_TIMESTAMP, SOL_SOCKET); if (*mp != NULL) { mp = &(*mp)->m_next; stamped = true; } } else if (CHECK_SO_CT(inp->inp_socket, SO_TS_REALTIME)) { struct bintime boottimebin; struct timespec ts, ts1; if ((m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) { mbuf_tstmp2timespec(m, &ts); getboottimebin(&boottimebin); bintime2timespec(&boottimebin, &ts1); timespecadd(&ts, &ts1, &ts); } else { nanotime(&ts); } *mp = sbcreatecontrol((caddr_t)&ts, sizeof(ts), SCM_REALTIME, SOL_SOCKET); if (*mp != NULL) { mp = &(*mp)->m_next; stamped = true; } } else if (CHECK_SO_CT(inp->inp_socket, SO_TS_MONOTONIC)) { struct timespec ts; if ((m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) mbuf_tstmp2timespec(m, &ts); else nanouptime(&ts); *mp = sbcreatecontrol((caddr_t)&ts, sizeof(ts), SCM_MONOTONIC, SOL_SOCKET); if (*mp != NULL) { mp = &(*mp)->m_next; stamped = true; } } if (stamped && (m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) { struct sock_timestamp_info sti; bzero(&sti, sizeof(sti)); sti.st_info_flags = ST_INFO_HW; if ((m->m_flags & M_TSTMP_HPREC) != 0) sti.st_info_flags |= ST_INFO_HW_HPREC; *mp = sbcreatecontrol((caddr_t)&sti, sizeof(sti), SCM_TIME_INFO, SOL_SOCKET); if (*mp != NULL) mp = &(*mp)->m_next; } if (inp->inp_flags & INP_RECVDSTADDR) { *mp = sbcreatecontrol((caddr_t)&ip->ip_dst, sizeof(struct in_addr), IP_RECVDSTADDR, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; } if (inp->inp_flags & INP_RECVTTL) { *mp = sbcreatecontrol((caddr_t)&ip->ip_ttl, sizeof(u_char), IP_RECVTTL, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; } #ifdef notyet /* XXX * Moving these out of udp_input() made them even more broken * than they already were. */ /* options were tossed already */ if (inp->inp_flags & INP_RECVOPTS) { *mp = sbcreatecontrol((caddr_t)opts_deleted_above, sizeof(struct in_addr), IP_RECVOPTS, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; } /* ip_srcroute doesn't do what we want here, need to fix */ if (inp->inp_flags & INP_RECVRETOPTS) { *mp = sbcreatecontrol((caddr_t)ip_srcroute(m), sizeof(struct in_addr), IP_RECVRETOPTS, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; } #endif if (inp->inp_flags & INP_RECVIF) { struct ifnet *ifp; struct sdlbuf { struct sockaddr_dl sdl; u_char pad[32]; } sdlbuf; struct sockaddr_dl *sdp; struct sockaddr_dl *sdl2 = &sdlbuf.sdl; if ((ifp = m->m_pkthdr.rcvif) && ifp->if_index && ifp->if_index <= V_if_index) { sdp = (struct sockaddr_dl *)ifp->if_addr->ifa_addr; /* * Change our mind and don't try copy. */ if (sdp->sdl_family != AF_LINK || sdp->sdl_len > sizeof(sdlbuf)) { goto makedummy; } bcopy(sdp, sdl2, sdp->sdl_len); } else { makedummy: sdl2->sdl_len = offsetof(struct sockaddr_dl, sdl_data[0]); sdl2->sdl_family = AF_LINK; sdl2->sdl_index = 0; sdl2->sdl_nlen = sdl2->sdl_alen = sdl2->sdl_slen = 0; } *mp = sbcreatecontrol((caddr_t)sdl2, sdl2->sdl_len, IP_RECVIF, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; } if (inp->inp_flags & INP_RECVTOS) { *mp = sbcreatecontrol((caddr_t)&ip->ip_tos, sizeof(u_char), IP_RECVTOS, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; } if (inp->inp_flags2 & INP_RECVFLOWID) { uint32_t flowid, flow_type; flowid = m->m_pkthdr.flowid; flow_type = M_HASHTYPE_GET(m); /* * XXX should handle the failure of one or the * other - don't populate both? */ *mp = sbcreatecontrol((caddr_t) &flowid, sizeof(uint32_t), IP_FLOWID, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; *mp = sbcreatecontrol((caddr_t) &flow_type, sizeof(uint32_t), IP_FLOWTYPE, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; } #ifdef RSS if (inp->inp_flags2 & INP_RECVRSSBUCKETID) { uint32_t flowid, flow_type; uint32_t rss_bucketid; flowid = m->m_pkthdr.flowid; flow_type = M_HASHTYPE_GET(m); if (rss_hash2bucket(flowid, flow_type, &rss_bucketid) == 0) { *mp = sbcreatecontrol((caddr_t) &rss_bucketid, sizeof(uint32_t), IP_RSSBUCKETID, IPPROTO_IP); if (*mp) mp = &(*mp)->m_next; } } #endif } /* * XXXRW: Multicast routing code in ip_mroute.c is generally MPSAFE, but the * ip_rsvp and ip_rsvp_on variables need to be interlocked with rsvp_on * locking. This code remains in ip_input.c as ip_mroute.c is optionally * compiled. */ VNET_DEFINE_STATIC(int, ip_rsvp_on); VNET_DEFINE(struct socket *, ip_rsvpd); #define V_ip_rsvp_on VNET(ip_rsvp_on) int ip_rsvp_init(struct socket *so) { if (so->so_type != SOCK_RAW || so->so_proto->pr_protocol != IPPROTO_RSVP) return EOPNOTSUPP; if (V_ip_rsvpd != NULL) return EADDRINUSE; V_ip_rsvpd = so; /* * This may seem silly, but we need to be sure we don't over-increment * the RSVP counter, in case something slips up. */ if (!V_ip_rsvp_on) { V_ip_rsvp_on = 1; V_rsvp_on++; } return 0; } int ip_rsvp_done(void) { V_ip_rsvpd = NULL; /* * This may seem silly, but we need to be sure we don't over-decrement * the RSVP counter, in case something slips up. */ if (V_ip_rsvp_on) { V_ip_rsvp_on = 0; V_rsvp_on--; } return 0; } int rsvp_input(struct mbuf **mp, int *offp, int proto) { struct mbuf *m; m = *mp; *mp = NULL; if (rsvp_input_p) { /* call the real one if loaded */ *mp = m; rsvp_input_p(mp, offp, proto); return (IPPROTO_DONE); } /* Can still get packets with rsvp_on = 0 if there is a local member * of the group to which the RSVP packet is addressed. But in this * case we want to throw the packet away. */ if (!V_rsvp_on) { m_freem(m); return (IPPROTO_DONE); } if (V_ip_rsvpd != NULL) { *mp = m; rip_input(mp, offp, proto); return (IPPROTO_DONE); } /* Drop the packet */ m_freem(m); return (IPPROTO_DONE); } diff --git a/sys/netinet/ip_var.h b/sys/netinet/ip_var.h index 77b6ee88507a..79a530bca67b 100644 --- a/sys/netinet/ip_var.h +++ b/sys/netinet/ip_var.h @@ -1,305 +1,309 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)ip_var.h 8.2 (Berkeley) 1/9/95 * $FreeBSD$ */ #ifndef _NETINET_IP_VAR_H_ #define _NETINET_IP_VAR_H_ #include #include /* * Overlay for ip header used by other protocols (tcp, udp). */ struct ipovly { u_char ih_x1[9]; /* (unused) */ u_char ih_pr; /* protocol */ u_short ih_len; /* protocol length */ struct in_addr ih_src; /* source internet address */ struct in_addr ih_dst; /* destination internet address */ }; #ifdef _KERNEL /* * Ip reassembly queue structure. Each fragment * being reassembled is attached to one of these structures. * They are timed out after ipq_ttl drops to 0, and may also * be reclaimed if memory becomes tight. */ struct ipq { TAILQ_ENTRY(ipq) ipq_list; /* to other reass headers */ u_char ipq_ttl; /* time for reass q to live */ u_char ipq_p; /* protocol of this fragment */ u_short ipq_id; /* sequence id for reassembly */ int ipq_maxoff; /* total length of packet */ struct mbuf *ipq_frags; /* to ip headers of fragments */ struct in_addr ipq_src,ipq_dst; u_char ipq_nfrags; /* # frags in this packet */ struct label *ipq_label; /* MAC label */ }; #endif /* _KERNEL */ /* * Structure stored in mbuf in inpcb.ip_options * and passed to ip_output when ip options are in use. * The actual length of the options (including ipopt_dst) * is in m_len. */ #define MAX_IPOPTLEN 40 struct ipoption { struct in_addr ipopt_dst; /* first-hop dst if source routed */ char ipopt_list[MAX_IPOPTLEN]; /* options proper */ }; #if defined(_NETINET_IN_VAR_H_) && defined(_KERNEL) /* * Structure attached to inpcb.ip_moptions and * passed to ip_output when IP multicast options are in use. * This structure is lazy-allocated. */ struct ip_moptions { struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */ struct in_addr imo_multicast_addr; /* ifindex/addr on MULTICAST_IF */ u_long imo_multicast_vif; /* vif num outgoing multicasts */ u_char imo_multicast_ttl; /* TTL for outgoing multicasts */ u_char imo_multicast_loop; /* 1 => hear sends if a member */ struct ip_mfilter_head imo_head; /* group membership list */ }; #else struct ip_moptions; #endif struct ipstat { uint64_t ips_total; /* total packets received */ uint64_t ips_badsum; /* checksum bad */ uint64_t ips_tooshort; /* packet too short */ uint64_t ips_toosmall; /* not enough data */ uint64_t ips_badhlen; /* ip header length < data size */ uint64_t ips_badlen; /* ip length < ip header length */ uint64_t ips_fragments; /* fragments received */ uint64_t ips_fragdropped; /* frags dropped (dups, out of space) */ uint64_t ips_fragtimeout; /* fragments timed out */ uint64_t ips_forward; /* packets forwarded */ uint64_t ips_fastforward; /* packets fast forwarded */ uint64_t ips_cantforward; /* packets rcvd for unreachable dest */ uint64_t ips_redirectsent; /* packets forwarded on same net */ uint64_t ips_noproto; /* unknown or unsupported protocol */ uint64_t ips_delivered; /* datagrams delivered to upper level*/ uint64_t ips_localout; /* total ip packets generated here */ uint64_t ips_odropped; /* lost packets due to nobufs, etc. */ uint64_t ips_reassembled; /* total packets reassembled ok */ uint64_t ips_fragmented; /* datagrams successfully fragmented */ uint64_t ips_ofragments; /* output fragments created */ uint64_t ips_cantfrag; /* don't fragment flag was set, etc. */ uint64_t ips_badoptions; /* error in option processing */ uint64_t ips_noroute; /* packets discarded due to no route */ uint64_t ips_badvers; /* ip version != 4 */ uint64_t ips_rawout; /* total raw ip packets generated */ uint64_t ips_toolong; /* ip length > max ip packet size */ uint64_t ips_notmember; /* multicasts for unregistered grps */ uint64_t ips_nogif; /* no match gif found */ uint64_t ips_badaddr; /* invalid address on header */ }; #ifdef _KERNEL #include #include VNET_PCPUSTAT_DECLARE(struct ipstat, ipstat); /* * In-kernel consumers can use these accessor macros directly to update * stats. */ #define IPSTAT_ADD(name, val) \ VNET_PCPUSTAT_ADD(struct ipstat, ipstat, name, (val)) #define IPSTAT_SUB(name, val) IPSTAT_ADD(name, -(val)) #define IPSTAT_INC(name) IPSTAT_ADD(name, 1) #define IPSTAT_DEC(name) IPSTAT_SUB(name, 1) /* * Kernel module consumers must use this accessor macro. */ void kmod_ipstat_inc(int statnum); #define KMOD_IPSTAT_INC(name) \ kmod_ipstat_inc(offsetof(struct ipstat, name) / sizeof(uint64_t)) void kmod_ipstat_dec(int statnum); #define KMOD_IPSTAT_DEC(name) \ kmod_ipstat_dec(offsetof(struct ipstat, name) / sizeof(uint64_t)) /* flags passed to ip_output as last parameter */ #define IP_FORWARDING 0x1 /* most of ip header exists */ #define IP_RAWOUTPUT 0x2 /* raw ip header exists */ #define IP_SENDONES 0x4 /* send all-ones broadcast */ #define IP_SENDTOIF 0x8 /* send on specific ifnet */ #define IP_ROUTETOIF SO_DONTROUTE /* 0x10 bypass routing tables */ #define IP_ALLOWBROADCAST SO_BROADCAST /* 0x20 can send broadcast packets */ #define IP_NODEFAULTFLOWID 0x40 /* Don't set the flowid from inp */ #define IP_NO_SND_TAG_RL 0x80 /* Don't send down the ratelimit tag */ #ifdef __NO_STRICT_ALIGNMENT #define IP_HDR_ALIGNED_P(ip) 1 #else #define IP_HDR_ALIGNED_P(ip) ((((intptr_t) (ip)) & 3) == 0) #endif struct ip; struct inpcb; struct route; struct sockopt; struct inpcbinfo; VNET_DECLARE(int, ip_defttl); /* default IP ttl */ VNET_DECLARE(int, ipforwarding); /* ip forwarding */ VNET_DECLARE(int, ipsendredirects); #ifdef IPSTEALTH VNET_DECLARE(int, ipstealth); /* stealth forwarding */ #endif extern u_char ip_protox[]; VNET_DECLARE(struct socket *, ip_rsvpd); /* reservation protocol daemon*/ VNET_DECLARE(struct socket *, ip_mrouter); /* multicast routing daemon */ extern int (*legal_vif_num)(int); extern u_long (*ip_mcast_src)(int); VNET_DECLARE(int, rsvp_on); VNET_DECLARE(int, drop_redirect); extern struct pr_usrreqs rip_usrreqs; #define V_ip_id VNET(ip_id) #define V_ip_defttl VNET(ip_defttl) #define V_ipforwarding VNET(ipforwarding) #define V_ipsendredirects VNET(ipsendredirects) #ifdef IPSTEALTH #define V_ipstealth VNET(ipstealth) #endif #define V_ip_rsvpd VNET(ip_rsvpd) #define V_ip_mrouter VNET(ip_mrouter) #define V_rsvp_on VNET(rsvp_on) #define V_drop_redirect VNET(drop_redirect) void inp_freemoptions(struct ip_moptions *); int inp_getmoptions(struct inpcb *, struct sockopt *); int inp_setmoptions(struct inpcb *, struct sockopt *); int ip_ctloutput(struct socket *, struct sockopt *sopt); void ip_drain(void); int ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu, u_long if_hwassist_flags); void ip_forward(struct mbuf *m, int srcrt); void ip_init(void); extern int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *, struct ip_moptions *); int ip_output(struct mbuf *, struct mbuf *, struct route *, int, struct ip_moptions *, struct inpcb *); int ipproto_register(short); int ipproto_unregister(short); struct mbuf * ip_reass(struct mbuf *); void ip_savecontrol(struct inpcb *, struct mbuf **, struct ip *, struct mbuf *); void ip_slowtimo(void); void ip_fillid(struct ip *); int rip_ctloutput(struct socket *, struct sockopt *); void rip_ctlinput(int, struct sockaddr *, void *); void rip_init(void); int rip_input(struct mbuf **, int *, int); int rip_output(struct mbuf *, struct socket *, ...); int ipip_input(struct mbuf **, int *, int); int rsvp_input(struct mbuf **, int *, int); int ip_rsvp_init(struct socket *); int ip_rsvp_done(void); extern int (*ip_rsvp_vif)(struct socket *, struct sockopt *); extern void (*ip_rsvp_force_done)(struct socket *); extern int (*rsvp_input_p)(struct mbuf **, int *, int); VNET_DECLARE(struct pfil_head *, inet_pfil_head); #define V_inet_pfil_head VNET(inet_pfil_head) #define PFIL_INET_NAME "inet" +VNET_DECLARE(struct pfil_head *, inet_local_pfil_head); +#define V_inet_local_pfil_head VNET(inet_local_pfil_head) +#define PFIL_INET_LOCAL_NAME "inet-local" + void in_delayed_cksum(struct mbuf *m); /* Hooks for ipfw, dummynet, divert etc. Most are declared in raw_ip.c */ /* * Reference to an ipfw or packet filter rule that can be carried * outside critical sections. * A rule is identified by rulenum:rule_id which is ordered. * In version chain_id the rule can be found in slot 'slot', so * we don't need a lookup if chain_id == chain->id. * * On exit from the firewall this structure refers to the rule after * the matching one (slot points to the new rule; rulenum:rule_id-1 * is the matching rule), and additional info (e.g. info often contains * the insn argument or tablearg in the low 16 bits, in host format). * On entry, the structure is valid if slot>0, and refers to the starting * rules. 'info' contains the reason for reinject, e.g. divert port, * divert direction, and so on. */ struct ipfw_rule_ref { uint32_t slot; /* slot for matching rule */ uint32_t rulenum; /* matching rule number */ uint32_t rule_id; /* matching rule id */ uint32_t chain_id; /* ruleset id */ uint32_t info; /* see below */ }; enum { IPFW_INFO_MASK = 0x0000ffff, IPFW_INFO_OUT = 0x00000000, /* outgoing, just for convenience */ IPFW_INFO_IN = 0x80000000, /* incoming, overloads dir */ IPFW_ONEPASS = 0x40000000, /* One-pass, do not reinject */ IPFW_IS_MASK = 0x30000000, /* which source ? */ IPFW_IS_DIVERT = 0x20000000, IPFW_IS_DUMMYNET =0x10000000, IPFW_IS_PIPE = 0x08000000, /* pipe=1, queue = 0 */ }; #define MTAG_IPFW 1148380143 /* IPFW-tagged cookie */ #define MTAG_IPFW_RULE 1262273568 /* rule reference */ #define MTAG_IPFW_CALL 1308397630 /* call stack */ struct ip_fw_args; typedef int (*ip_fw_chk_ptr_t)(struct ip_fw_args *args); typedef int (*ip_fw_ctl_ptr_t)(struct sockopt *); VNET_DECLARE(ip_fw_ctl_ptr_t, ip_fw_ctl_ptr); #define V_ip_fw_ctl_ptr VNET(ip_fw_ctl_ptr) /* Divert hooks. */ extern void (*ip_divert_ptr)(struct mbuf *m, bool incoming); /* ng_ipfw hooks -- XXX make it the same as divert and dummynet */ extern int (*ng_ipfw_input_p)(struct mbuf **, struct ip_fw_args *, bool); extern int (*ip_dn_ctl_ptr)(struct sockopt *); extern int (*ip_dn_io_ptr)(struct mbuf **, struct ip_fw_args *); #endif /* _KERNEL */ #endif /* !_NETINET_IP_VAR_H_ */ diff --git a/sys/netinet6/ip6_input.c b/sys/netinet6/ip6_input.c index 2423b61e0b36..e77bb9b68e5d 100644 --- a/sys/netinet6/ip6_input.c +++ b/sys/netinet6/ip6_input.c @@ -1,1735 +1,1754 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $KAME: ip6_input.c,v 1.259 2002/01/21 04:58:09 jinmei Exp $ */ /*- * Copyright (c) 1982, 1986, 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)ip_input.c 8.2 (Berkeley) 1/4/94 */ #include __FBSDID("$FreeBSD$"); #include "opt_inet.h" #include "opt_inet6.h" #include "opt_ipsec.h" #include "opt_route.h" #include "opt_rss.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif /* INET */ #include #include #include #include #include #include #include #include #include #include #include #include extern struct domain inet6domain; u_char ip6_protox[IPPROTO_MAX]; VNET_DEFINE(struct in6_ifaddrhead, in6_ifaddrhead); VNET_DEFINE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl); VNET_DEFINE(u_long, in6_ifaddrhmask); static struct netisr_handler ip6_nh = { .nh_name = "ip6", .nh_handler = ip6_input, .nh_proto = NETISR_IPV6, #ifdef RSS .nh_m2cpuid = rss_soft_m2cpuid_v6, .nh_policy = NETISR_POLICY_CPU, .nh_dispatch = NETISR_DISPATCH_HYBRID, #else .nh_policy = NETISR_POLICY_FLOW, #endif }; static int sysctl_netinet6_intr_queue_maxlen(SYSCTL_HANDLER_ARGS) { int error, qlimit; netisr_getqlimit(&ip6_nh, &qlimit); error = sysctl_handle_int(oidp, &qlimit, 0, req); if (error || !req->newptr) return (error); if (qlimit < 1) return (EINVAL); return (netisr_setqlimit(&ip6_nh, qlimit)); } SYSCTL_DECL(_net_inet6_ip6); SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_INTRQMAXLEN, intr_queue_maxlen, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 0, sysctl_netinet6_intr_queue_maxlen, "I", "Maximum size of the IPv6 input queue"); #ifdef RSS static struct netisr_handler ip6_direct_nh = { .nh_name = "ip6_direct", .nh_handler = ip6_direct_input, .nh_proto = NETISR_IPV6_DIRECT, .nh_m2cpuid = rss_soft_m2cpuid_v6, .nh_policy = NETISR_POLICY_CPU, .nh_dispatch = NETISR_DISPATCH_HYBRID, }; static int sysctl_netinet6_intr_direct_queue_maxlen(SYSCTL_HANDLER_ARGS) { int error, qlimit; netisr_getqlimit(&ip6_direct_nh, &qlimit); error = sysctl_handle_int(oidp, &qlimit, 0, req); if (error || !req->newptr) return (error); if (qlimit < 1) return (EINVAL); return (netisr_setqlimit(&ip6_direct_nh, qlimit)); } SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_INTRDQMAXLEN, intr_direct_queue_maxlen, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 0, sysctl_netinet6_intr_direct_queue_maxlen, "I", "Maximum size of the IPv6 direct input queue"); #endif VNET_DEFINE(pfil_head_t, inet6_pfil_head); +VNET_DEFINE(pfil_head_t, inet6_local_pfil_head); VNET_PCPUSTAT_DEFINE(struct ip6stat, ip6stat); VNET_PCPUSTAT_SYSINIT(ip6stat); #ifdef VIMAGE VNET_PCPUSTAT_SYSUNINIT(ip6stat); #endif /* VIMAGE */ struct rmlock in6_ifaddr_lock; RM_SYSINIT(in6_ifaddr_lock, &in6_ifaddr_lock, "in6_ifaddr_lock"); static int ip6_hopopts_input(u_int32_t *, u_int32_t *, struct mbuf **, int *); /* * IP6 initialization: fill in IP6 protocol switch table. * All protocols not implemented in kernel go to raw IP6 protocol handler. */ void ip6_init(void) { struct pfil_head_args args; struct protosw *pr; int i; TUNABLE_INT_FETCH("net.inet6.ip6.auto_linklocal", &V_ip6_auto_linklocal); TUNABLE_INT_FETCH("net.inet6.ip6.accept_rtadv", &V_ip6_accept_rtadv); TUNABLE_INT_FETCH("net.inet6.ip6.no_radr", &V_ip6_no_radr); CK_STAILQ_INIT(&V_in6_ifaddrhead); V_in6_ifaddrhashtbl = hashinit(IN6ADDR_NHASH, M_IFADDR, &V_in6_ifaddrhmask); /* Initialize packet filter hooks. */ args.pa_version = PFIL_VERSION; args.pa_flags = PFIL_IN | PFIL_OUT; args.pa_type = PFIL_TYPE_IP6; args.pa_headname = PFIL_INET6_NAME; V_inet6_pfil_head = pfil_head_register(&args); + args.pa_flags = PFIL_OUT; + args.pa_headname = PFIL_INET6_LOCAL_NAME; + V_inet6_local_pfil_head = pfil_head_register(&args); + if (hhook_head_register(HHOOK_TYPE_IPSEC_IN, AF_INET6, &V_ipsec_hhh_in[HHOOK_IPSEC_INET6], HHOOK_WAITOK | HHOOK_HEADISINVNET) != 0) printf("%s: WARNING: unable to register input helper hook\n", __func__); if (hhook_head_register(HHOOK_TYPE_IPSEC_OUT, AF_INET6, &V_ipsec_hhh_out[HHOOK_IPSEC_INET6], HHOOK_WAITOK | HHOOK_HEADISINVNET) != 0) printf("%s: WARNING: unable to register output helper hook\n", __func__); scope6_init(); addrsel_policy_init(); nd6_init(); frag6_init(); V_ip6_desync_factor = arc4random() % MAX_TEMP_DESYNC_FACTOR; /* Skip global initialization stuff for non-default instances. */ #ifdef VIMAGE if (!IS_DEFAULT_VNET(curvnet)) { netisr_register_vnet(&ip6_nh); #ifdef RSS netisr_register_vnet(&ip6_direct_nh); #endif return; } #endif pr = pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW); if (pr == NULL) panic("ip6_init"); /* Initialize the entire ip6_protox[] array to IPPROTO_RAW. */ for (i = 0; i < IPPROTO_MAX; i++) ip6_protox[i] = pr - inet6sw; /* * Cycle through IP protocols and put them into the appropriate place * in ip6_protox[]. */ for (pr = inet6domain.dom_protosw; pr < inet6domain.dom_protoswNPROTOSW; pr++) if (pr->pr_domain->dom_family == PF_INET6 && pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW) { /* Be careful to only index valid IP protocols. */ if (pr->pr_protocol < IPPROTO_MAX) ip6_protox[pr->pr_protocol] = pr - inet6sw; } netisr_register(&ip6_nh); #ifdef RSS netisr_register(&ip6_direct_nh); #endif } /* * The protocol to be inserted into ip6_protox[] must be already registered * in inet6sw[], either statically or through pf_proto_register(). */ int ip6proto_register(short ip6proto) { struct protosw *pr; /* Sanity checks. */ if (ip6proto <= 0 || ip6proto >= IPPROTO_MAX) return (EPROTONOSUPPORT); /* * The protocol slot must not be occupied by another protocol * already. An index pointing to IPPROTO_RAW is unused. */ pr = pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW); if (pr == NULL) return (EPFNOSUPPORT); if (ip6_protox[ip6proto] != pr - inet6sw) /* IPPROTO_RAW */ return (EEXIST); /* * Find the protocol position in inet6sw[] and set the index. */ for (pr = inet6domain.dom_protosw; pr < inet6domain.dom_protoswNPROTOSW; pr++) { if (pr->pr_domain->dom_family == PF_INET6 && pr->pr_protocol && pr->pr_protocol == ip6proto) { ip6_protox[pr->pr_protocol] = pr - inet6sw; return (0); } } return (EPROTONOSUPPORT); } int ip6proto_unregister(short ip6proto) { struct protosw *pr; /* Sanity checks. */ if (ip6proto <= 0 || ip6proto >= IPPROTO_MAX) return (EPROTONOSUPPORT); /* Check if the protocol was indeed registered. */ pr = pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW); if (pr == NULL) return (EPFNOSUPPORT); if (ip6_protox[ip6proto] == pr - inet6sw) /* IPPROTO_RAW */ return (ENOENT); /* Reset the protocol slot to IPPROTO_RAW. */ ip6_protox[ip6proto] = pr - inet6sw; return (0); } #ifdef VIMAGE static void ip6_destroy(void *unused __unused) { struct ifaddr *ifa, *nifa; struct ifnet *ifp; int error; #ifdef RSS netisr_unregister_vnet(&ip6_direct_nh); #endif netisr_unregister_vnet(&ip6_nh); pfil_head_unregister(V_inet6_pfil_head); error = hhook_head_deregister(V_ipsec_hhh_in[HHOOK_IPSEC_INET6]); if (error != 0) { printf("%s: WARNING: unable to deregister input helper hook " "type HHOOK_TYPE_IPSEC_IN, id HHOOK_IPSEC_INET6: " "error %d returned\n", __func__, error); } error = hhook_head_deregister(V_ipsec_hhh_out[HHOOK_IPSEC_INET6]); if (error != 0) { printf("%s: WARNING: unable to deregister output helper hook " "type HHOOK_TYPE_IPSEC_OUT, id HHOOK_IPSEC_INET6: " "error %d returned\n", __func__, error); } /* Cleanup addresses. */ IFNET_RLOCK(); CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) { /* Cannot lock here - lock recursion. */ /* IF_ADDR_LOCK(ifp); */ CK_STAILQ_FOREACH_SAFE(ifa, &ifp->if_addrhead, ifa_link, nifa) { if (ifa->ifa_addr->sa_family != AF_INET6) continue; in6_purgeaddr(ifa); } /* IF_ADDR_UNLOCK(ifp); */ in6_ifdetach_destroy(ifp); mld_domifdetach(ifp); } IFNET_RUNLOCK(); /* Make sure any routes are gone as well. */ rib_flush_routes_family(AF_INET6); frag6_destroy(); nd6_destroy(); in6_ifattach_destroy(); hashdestroy(V_in6_ifaddrhashtbl, M_IFADDR, V_in6_ifaddrhmask); } VNET_SYSUNINIT(inet6, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, ip6_destroy, NULL); #endif static int ip6_input_hbh(struct mbuf **mp, uint32_t *plen, uint32_t *rtalert, int *off, int *nxt, int *ours) { struct mbuf *m; struct ip6_hdr *ip6; struct ip6_hbh *hbh; if (ip6_hopopts_input(plen, rtalert, mp, off)) { #if 0 /*touches NULL pointer*/ in6_ifstat_inc((*mp)->m_pkthdr.rcvif, ifs6_in_discard); #endif goto out; /* m have already been freed */ } /* adjust pointer */ m = *mp; ip6 = mtod(m, struct ip6_hdr *); /* * if the payload length field is 0 and the next header field * indicates Hop-by-Hop Options header, then a Jumbo Payload * option MUST be included. */ if (ip6->ip6_plen == 0 && *plen == 0) { /* * Note that if a valid jumbo payload option is * contained, ip6_hopopts_input() must set a valid * (non-zero) payload length to the variable plen. */ IP6STAT_INC(ip6s_badoptions); in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_hdrerr); icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER, (caddr_t)&ip6->ip6_plen - (caddr_t)ip6); goto out; } /* ip6_hopopts_input() ensures that mbuf is contiguous */ hbh = (struct ip6_hbh *)(ip6 + 1); *nxt = hbh->ip6h_nxt; /* * If we are acting as a router and the packet contains a * router alert option, see if we know the option value. * Currently, we only support the option value for MLD, in which * case we should pass the packet to the multicast routing * daemon. */ if (*rtalert != ~0) { switch (*rtalert) { case IP6OPT_RTALERT_MLD: if (V_ip6_forwarding) *ours = 1; break; default: /* * RFC2711 requires unrecognized values must be * silently ignored. */ break; } } return (0); out: return (1); } #ifdef RSS /* * IPv6 direct input routine. * * This is called when reinjecting completed fragments where * all of the previous checking and book-keeping has been done. */ void ip6_direct_input(struct mbuf *m) { int off, nxt; int nest; struct m_tag *mtag; struct ip6_direct_ctx *ip6dc; mtag = m_tag_locate(m, MTAG_ABI_IPV6, IPV6_TAG_DIRECT, NULL); KASSERT(mtag != NULL, ("Reinjected packet w/o direct ctx tag!")); ip6dc = (struct ip6_direct_ctx *)(mtag + 1); nxt = ip6dc->ip6dc_nxt; off = ip6dc->ip6dc_off; nest = 0; m_tag_delete(m, mtag); while (nxt != IPPROTO_DONE) { if (V_ip6_hdrnestlimit && (++nest > V_ip6_hdrnestlimit)) { IP6STAT_INC(ip6s_toomanyhdr); goto bad; } /* * protection against faulty packet - there should be * more sanity checks in header chain processing. */ if (m->m_pkthdr.len < off) { IP6STAT_INC(ip6s_tooshort); in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_truncated); goto bad; } #if defined(IPSEC) || defined(IPSEC_SUPPORT) if (IPSEC_ENABLED(ipv6)) { if (IPSEC_INPUT(ipv6, m, off, nxt) != 0) return; } #endif /* IPSEC */ nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); } return; bad: m_freem(m); } #endif void ip6_input(struct mbuf *m) { struct in6_addr odst; struct ip6_hdr *ip6; struct in6_ifaddr *ia; struct ifnet *rcvif; u_int32_t plen; u_int32_t rtalert = ~0; int off = sizeof(struct ip6_hdr), nest; int nxt, ours = 0; int srcrt = 0; /* * Drop the packet if IPv6 operation is disabled on the interface. */ rcvif = m->m_pkthdr.rcvif; if ((ND_IFINFO(rcvif)->flags & ND6_IFF_IFDISABLED)) goto bad; #if defined(IPSEC) || defined(IPSEC_SUPPORT) /* * should the inner packet be considered authentic? * see comment in ah4_input(). * NB: m cannot be NULL when passed to the input routine */ m->m_flags &= ~M_AUTHIPHDR; m->m_flags &= ~M_AUTHIPDGM; #endif /* IPSEC */ if (m->m_flags & M_FASTFWD_OURS) { /* * Firewall changed destination to local. */ ip6 = mtod(m, struct ip6_hdr *); goto passin; } /* * mbuf statistics */ if (m->m_flags & M_EXT) { if (m->m_next) IP6STAT_INC(ip6s_mext2m); else IP6STAT_INC(ip6s_mext1); } else { if (m->m_next) { struct ifnet *ifp = (m->m_flags & M_LOOP) ? V_loif : rcvif; int ifindex = ifp->if_index; if (ifindex >= IP6S_M2MMAX) ifindex = 0; IP6STAT_INC(ip6s_m2m[ifindex]); } else IP6STAT_INC(ip6s_m1); } in6_ifstat_inc(rcvif, ifs6_in_receive); IP6STAT_INC(ip6s_total); /* * L2 bridge code and some other code can return mbuf chain * that does not conform to KAME requirement. too bad. * XXX: fails to join if interface MTU > MCLBYTES. jumbogram? */ if (m && m->m_next != NULL && m->m_pkthdr.len < MCLBYTES) { struct mbuf *n; if (m->m_pkthdr.len > MHLEN) n = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); else n = m_gethdr(M_NOWAIT, MT_DATA); if (n == NULL) goto bad; m_move_pkthdr(n, m); m_copydata(m, 0, n->m_pkthdr.len, mtod(n, caddr_t)); n->m_len = n->m_pkthdr.len; m_freem(m); m = n; } if (m->m_len < sizeof(struct ip6_hdr)) { if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == NULL) { IP6STAT_INC(ip6s_toosmall); in6_ifstat_inc(rcvif, ifs6_in_hdrerr); goto bad; } } ip6 = mtod(m, struct ip6_hdr *); if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { IP6STAT_INC(ip6s_badvers); in6_ifstat_inc(rcvif, ifs6_in_hdrerr); goto bad; } IP6STAT_INC(ip6s_nxthist[ip6->ip6_nxt]); IP_PROBE(receive, NULL, NULL, ip6, rcvif, NULL, ip6); /* * Check against address spoofing/corruption. */ if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_src) || IN6_IS_ADDR_UNSPECIFIED(&ip6->ip6_dst)) { /* * XXX: "badscope" is not very suitable for a multicast source. */ IP6STAT_INC(ip6s_badscope); in6_ifstat_inc(rcvif, ifs6_in_addrerr); goto bad; } if (IN6_IS_ADDR_MC_INTFACELOCAL(&ip6->ip6_dst) && !(m->m_flags & M_LOOP)) { /* * In this case, the packet should come from the loopback * interface. However, we cannot just check the if_flags, * because ip6_mloopback() passes the "actual" interface * as the outgoing/incoming interface. */ IP6STAT_INC(ip6s_badscope); in6_ifstat_inc(rcvif, ifs6_in_addrerr); goto bad; } if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && IPV6_ADDR_MC_SCOPE(&ip6->ip6_dst) == 0) { /* * RFC4291 2.7: * Nodes must not originate a packet to a multicast address * whose scop field contains the reserved value 0; if such * a packet is received, it must be silently dropped. */ IP6STAT_INC(ip6s_badscope); in6_ifstat_inc(rcvif, ifs6_in_addrerr); goto bad; } #ifdef ALTQ if (altq_input != NULL && (*altq_input)(m, AF_INET6) == 0) { /* packet is dropped by traffic conditioner */ return; } #endif /* * The following check is not documented in specs. A malicious * party may be able to use IPv4 mapped addr to confuse tcp/udp stack * and bypass security checks (act as if it was from 127.0.0.1 by using * IPv6 src ::ffff:127.0.0.1). Be cautious. * * We have supported IPv6-only kernels for a few years and this issue * has not come up. The world seems to move mostly towards not using * v4mapped on the wire, so it makes sense for us to keep rejecting * any such packets. */ if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) || IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) { IP6STAT_INC(ip6s_badscope); in6_ifstat_inc(rcvif, ifs6_in_addrerr); goto bad; } #if 0 /* * Reject packets with IPv4 compatible addresses (auto tunnel). * * The code forbids auto tunnel relay case in RFC1933 (the check is * stronger than RFC1933). We may want to re-enable it if mech-xx * is revised to forbid relaying case. */ if (IN6_IS_ADDR_V4COMPAT(&ip6->ip6_src) || IN6_IS_ADDR_V4COMPAT(&ip6->ip6_dst)) { IP6STAT_INC(ip6s_badscope); in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); goto bad; } #endif /* * Try to forward the packet, but if we fail continue. * ip6_tryforward() does not generate redirects, so fall * through to normal processing if redirects are required. * ip6_tryforward() does inbound and outbound packet firewall * processing. If firewall has decided that destination becomes * our local address, it sets M_FASTFWD_OURS flag. In this * case skip another inbound firewall processing and update * ip6 pointer. */ if (V_ip6_forwarding != 0 && V_ip6_sendredirects == 0 #if defined(IPSEC) || defined(IPSEC_SUPPORT) && (!IPSEC_ENABLED(ipv6) || IPSEC_CAPS(ipv6, m, IPSEC_CAP_OPERABLE) == 0) #endif ) { if ((m = ip6_tryforward(m)) == NULL) return; if (m->m_flags & M_FASTFWD_OURS) { ip6 = mtod(m, struct ip6_hdr *); goto passin; } } #if defined(IPSEC) || defined(IPSEC_SUPPORT) /* * Bypass packet filtering for packets previously handled by IPsec. */ if (IPSEC_ENABLED(ipv6) && IPSEC_CAPS(ipv6, m, IPSEC_CAP_BYPASS_FILTER) != 0) goto passin; #endif /* * Run through list of hooks for input packets. * * NB: Beware of the destination address changing * (e.g. by NAT rewriting). When this happens, * tell ip6_forward to do the right thing. */ /* Jump over all PFIL processing if hooks are not active. */ if (!PFIL_HOOKED_IN(V_inet6_pfil_head)) goto passin; odst = ip6->ip6_dst; if (pfil_run_hooks(V_inet6_pfil_head, &m, m->m_pkthdr.rcvif, PFIL_IN, NULL) != PFIL_PASS) return; ip6 = mtod(m, struct ip6_hdr *); srcrt = !IN6_ARE_ADDR_EQUAL(&odst, &ip6->ip6_dst); if ((m->m_flags & (M_IP6_NEXTHOP | M_FASTFWD_OURS)) == M_IP6_NEXTHOP && m_tag_find(m, PACKET_TAG_IPFORWARD, NULL) != NULL) { /* * Directly ship the packet on. This allows forwarding * packets originally destined to us to some other directly * connected host. */ ip6_forward(m, 1); return; } passin: /* * Disambiguate address scope zones (if there is ambiguity). * We first make sure that the original source or destination address * is not in our internal form for scoped addresses. Such addresses * are not necessarily invalid spec-wise, but we cannot accept them due * to the usage conflict. * in6_setscope() then also checks and rejects the cases where src or * dst are the loopback address and the receiving interface * is not loopback. */ if (in6_clearscope(&ip6->ip6_src) || in6_clearscope(&ip6->ip6_dst)) { IP6STAT_INC(ip6s_badscope); /* XXX */ goto bad; } if (in6_setscope(&ip6->ip6_src, rcvif, NULL) || in6_setscope(&ip6->ip6_dst, rcvif, NULL)) { IP6STAT_INC(ip6s_badscope); goto bad; } if (m->m_flags & M_FASTFWD_OURS) { m->m_flags &= ~M_FASTFWD_OURS; ours = 1; goto hbhcheck; } /* * Multicast check. Assume packet is for us to avoid * prematurely taking locks. */ if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { ours = 1; in6_ifstat_inc(rcvif, ifs6_in_mcast); goto hbhcheck; } /* * Unicast check * XXX: For now we keep link-local IPv6 addresses with embedded * scope zone id, therefore we use zero zoneid here. */ ia = in6ifa_ifwithaddr(&ip6->ip6_dst, 0 /* XXX */, false); if (ia != NULL) { if (ia->ia6_flags & IN6_IFF_NOTREADY) { char ip6bufs[INET6_ADDRSTRLEN]; char ip6bufd[INET6_ADDRSTRLEN]; /* address is not ready, so discard the packet. */ nd6log((LOG_INFO, "ip6_input: packet to an unready address %s->%s\n", ip6_sprintf(ip6bufs, &ip6->ip6_src), ip6_sprintf(ip6bufd, &ip6->ip6_dst))); goto bad; } /* Count the packet in the ip address stats */ counter_u64_add(ia->ia_ifa.ifa_ipackets, 1); counter_u64_add(ia->ia_ifa.ifa_ibytes, m->m_pkthdr.len); ours = 1; goto hbhcheck; } /* * Now there is no reason to process the packet if it's not our own * and we're not a router. */ if (!V_ip6_forwarding) { IP6STAT_INC(ip6s_cantforward); goto bad; } hbhcheck: /* * Process Hop-by-Hop options header if it's contained. * m may be modified in ip6_hopopts_input(). * If a JumboPayload option is included, plen will also be modified. */ plen = (u_int32_t)ntohs(ip6->ip6_plen); if (ip6->ip6_nxt == IPPROTO_HOPOPTS) { if (ip6_input_hbh(&m, &plen, &rtalert, &off, &nxt, &ours) != 0) return; } else nxt = ip6->ip6_nxt; /* * Use mbuf flags to propagate Router Alert option to * ICMPv6 layer, as hop-by-hop options have been stripped. */ if (rtalert != ~0) m->m_flags |= M_RTALERT_MLD; /* * Check that the amount of data in the buffers * is as at least much as the IPv6 header would have us expect. * Trim mbufs if longer than we expect. * Drop packet if shorter than we expect. */ if (m->m_pkthdr.len - sizeof(struct ip6_hdr) < plen) { IP6STAT_INC(ip6s_tooshort); in6_ifstat_inc(rcvif, ifs6_in_truncated); goto bad; } if (m->m_pkthdr.len > sizeof(struct ip6_hdr) + plen) { if (m->m_len == m->m_pkthdr.len) { m->m_len = sizeof(struct ip6_hdr) + plen; m->m_pkthdr.len = sizeof(struct ip6_hdr) + plen; } else m_adj(m, sizeof(struct ip6_hdr) + plen - m->m_pkthdr.len); } /* * Forward if desirable. */ if (V_ip6_mrouter && IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { /* * If we are acting as a multicast router, all * incoming multicast packets are passed to the * kernel-level multicast forwarding function. * The packet is returned (relatively) intact; if * ip6_mforward() returns a non-zero value, the packet * must be discarded, else it may be accepted below. * * XXX TODO: Check hlim and multicast scope here to avoid * unnecessarily calling into ip6_mforward(). */ if (ip6_mforward && ip6_mforward(ip6, rcvif, m)) { IP6STAT_INC(ip6s_cantforward); goto bad; } } else if (!ours) { ip6_forward(m, srcrt); return; } + /* + * We are going to ship the packet to the local protocol stack. Call the + * filter again for this 'output' action, allowing redirect-like rules + * to adjust the source address. + */ + if (PFIL_HOOKED_OUT(V_inet6_local_pfil_head)) { + if (pfil_run_hooks(V_inet6_local_pfil_head, &m, V_loif, PFIL_OUT, + NULL) != PFIL_PASS) + return; + if (m == NULL) /* consumed by filter */ + return; + ip6 = mtod(m, struct ip6_hdr *); + } + /* * Tell launch routine the next header */ IP6STAT_INC(ip6s_delivered); in6_ifstat_inc(rcvif, ifs6_in_deliver); nest = 0; while (nxt != IPPROTO_DONE) { if (V_ip6_hdrnestlimit && (++nest > V_ip6_hdrnestlimit)) { IP6STAT_INC(ip6s_toomanyhdr); goto bad; } /* * protection against faulty packet - there should be * more sanity checks in header chain processing. */ if (m->m_pkthdr.len < off) { IP6STAT_INC(ip6s_tooshort); in6_ifstat_inc(rcvif, ifs6_in_truncated); goto bad; } #if defined(IPSEC) || defined(IPSEC_SUPPORT) if (IPSEC_ENABLED(ipv6)) { if (IPSEC_INPUT(ipv6, m, off, nxt) != 0) return; } #endif /* IPSEC */ nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); } return; bad: in6_ifstat_inc(rcvif, ifs6_in_discard); if (m != NULL) m_freem(m); } /* * Hop-by-Hop options header processing. If a valid jumbo payload option is * included, the real payload length will be stored in plenp. * * rtalertp - XXX: should be stored more smart way */ static int ip6_hopopts_input(u_int32_t *plenp, u_int32_t *rtalertp, struct mbuf **mp, int *offp) { struct mbuf *m = *mp; int off = *offp, hbhlen; struct ip6_hbh *hbh; /* validation of the length of the header */ if (m->m_len < off + sizeof(*hbh)) { m = m_pullup(m, off + sizeof(*hbh)); if (m == NULL) { IP6STAT_INC(ip6s_exthdrtoolong); *mp = NULL; return (-1); } } hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off); hbhlen = (hbh->ip6h_len + 1) << 3; if (m->m_len < off + hbhlen) { m = m_pullup(m, off + hbhlen); if (m == NULL) { IP6STAT_INC(ip6s_exthdrtoolong); *mp = NULL; return (-1); } } hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off); off += hbhlen; hbhlen -= sizeof(struct ip6_hbh); if (ip6_process_hopopts(m, (u_int8_t *)hbh + sizeof(struct ip6_hbh), hbhlen, rtalertp, plenp) < 0) { *mp = NULL; return (-1); } *offp = off; *mp = m; return (0); } /* * Search header for all Hop-by-hop options and process each option. * This function is separate from ip6_hopopts_input() in order to * handle a case where the sending node itself process its hop-by-hop * options header. In such a case, the function is called from ip6_output(). * * The function assumes that hbh header is located right after the IPv6 header * (RFC2460 p7), opthead is pointer into data content in m, and opthead to * opthead + hbhlen is located in contiguous memory region. */ int ip6_process_hopopts(struct mbuf *m, u_int8_t *opthead, int hbhlen, u_int32_t *rtalertp, u_int32_t *plenp) { struct ip6_hdr *ip6; int optlen = 0; u_int8_t *opt = opthead; u_int16_t rtalert_val; u_int32_t jumboplen; const int erroff = sizeof(struct ip6_hdr) + sizeof(struct ip6_hbh); for (; hbhlen > 0; hbhlen -= optlen, opt += optlen) { switch (*opt) { case IP6OPT_PAD1: optlen = 1; break; case IP6OPT_PADN: if (hbhlen < IP6OPT_MINLEN) { IP6STAT_INC(ip6s_toosmall); goto bad; } optlen = *(opt + 1) + 2; break; case IP6OPT_ROUTER_ALERT: /* XXX may need check for alignment */ if (hbhlen < IP6OPT_RTALERT_LEN) { IP6STAT_INC(ip6s_toosmall); goto bad; } if (*(opt + 1) != IP6OPT_RTALERT_LEN - 2) { /* XXX stat */ icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER, erroff + opt + 1 - opthead); return (-1); } optlen = IP6OPT_RTALERT_LEN; bcopy((caddr_t)(opt + 2), (caddr_t)&rtalert_val, 2); *rtalertp = ntohs(rtalert_val); break; case IP6OPT_JUMBO: /* XXX may need check for alignment */ if (hbhlen < IP6OPT_JUMBO_LEN) { IP6STAT_INC(ip6s_toosmall); goto bad; } if (*(opt + 1) != IP6OPT_JUMBO_LEN - 2) { /* XXX stat */ icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER, erroff + opt + 1 - opthead); return (-1); } optlen = IP6OPT_JUMBO_LEN; /* * IPv6 packets that have non 0 payload length * must not contain a jumbo payload option. */ ip6 = mtod(m, struct ip6_hdr *); if (ip6->ip6_plen) { IP6STAT_INC(ip6s_badoptions); icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER, erroff + opt - opthead); return (-1); } /* * We may see jumbolen in unaligned location, so * we'd need to perform bcopy(). */ bcopy(opt + 2, &jumboplen, sizeof(jumboplen)); jumboplen = (u_int32_t)htonl(jumboplen); #if 1 /* * if there are multiple jumbo payload options, * *plenp will be non-zero and the packet will be * rejected. * the behavior may need some debate in ipngwg - * multiple options does not make sense, however, * there's no explicit mention in specification. */ if (*plenp != 0) { IP6STAT_INC(ip6s_badoptions); icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER, erroff + opt + 2 - opthead); return (-1); } #endif /* * jumbo payload length must be larger than 65535. */ if (jumboplen <= IPV6_MAXPACKET) { IP6STAT_INC(ip6s_badoptions); icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER, erroff + opt + 2 - opthead); return (-1); } *plenp = jumboplen; break; default: /* unknown option */ if (hbhlen < IP6OPT_MINLEN) { IP6STAT_INC(ip6s_toosmall); goto bad; } optlen = ip6_unknown_opt(opt, m, erroff + opt - opthead); if (optlen == -1) return (-1); optlen += 2; break; } } return (0); bad: m_freem(m); return (-1); } /* * Unknown option processing. * The third argument `off' is the offset from the IPv6 header to the option, * which is necessary if the IPv6 header the and option header and IPv6 header * is not contiguous in order to return an ICMPv6 error. */ int ip6_unknown_opt(u_int8_t *optp, struct mbuf *m, int off) { struct ip6_hdr *ip6; switch (IP6OPT_TYPE(*optp)) { case IP6OPT_TYPE_SKIP: /* ignore the option */ return ((int)*(optp + 1)); case IP6OPT_TYPE_DISCARD: /* silently discard */ m_freem(m); return (-1); case IP6OPT_TYPE_FORCEICMP: /* send ICMP even if multicasted */ IP6STAT_INC(ip6s_badoptions); icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_OPTION, off); return (-1); case IP6OPT_TYPE_ICMP: /* send ICMP if not multicasted */ IP6STAT_INC(ip6s_badoptions); ip6 = mtod(m, struct ip6_hdr *); if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) || (m->m_flags & (M_BCAST|M_MCAST))) m_freem(m); else icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_OPTION, off); return (-1); } m_freem(m); /* XXX: NOTREACHED */ return (-1); } /* * Create the "control" list for this pcb. * These functions will not modify mbuf chain at all. * * The routine will be called from upper layer handlers like tcp6_input(). * Thus the routine assumes that the caller (tcp6_input) have already * called m_pullup() and all the extension headers are located in the * very first mbuf on the mbuf chain. * * ip6_savecontrol_v4 will handle those options that are possible to be * set on a v4-mapped socket. * ip6_savecontrol will directly call ip6_savecontrol_v4 to handle those * options and handle the v6-only ones itself. */ struct mbuf ** ip6_savecontrol_v4(struct inpcb *inp, struct mbuf *m, struct mbuf **mp, int *v4only) { struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); #ifdef SO_TIMESTAMP if ((inp->inp_socket->so_options & SO_TIMESTAMP) != 0) { union { struct timeval tv; struct bintime bt; struct timespec ts; } t; struct bintime boottimebin, bt1; struct timespec ts1; bool stamped; stamped = false; switch (inp->inp_socket->so_ts_clock) { case SO_TS_REALTIME_MICRO: if ((m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) { mbuf_tstmp2timespec(m, &ts1); timespec2bintime(&ts1, &bt1); getboottimebin(&boottimebin); bintime_add(&bt1, &boottimebin); bintime2timeval(&bt1, &t.tv); } else { microtime(&t.tv); } *mp = sbcreatecontrol((caddr_t) &t.tv, sizeof(t.tv), SCM_TIMESTAMP, SOL_SOCKET); if (*mp != NULL) { mp = &(*mp)->m_next; stamped = true; } break; case SO_TS_BINTIME: if ((m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) { mbuf_tstmp2timespec(m, &ts1); timespec2bintime(&ts1, &t.bt); getboottimebin(&boottimebin); bintime_add(&t.bt, &boottimebin); } else { bintime(&t.bt); } *mp = sbcreatecontrol((caddr_t)&t.bt, sizeof(t.bt), SCM_BINTIME, SOL_SOCKET); if (*mp != NULL) { mp = &(*mp)->m_next; stamped = true; } break; case SO_TS_REALTIME: if ((m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) { mbuf_tstmp2timespec(m, &t.ts); getboottimebin(&boottimebin); bintime2timespec(&boottimebin, &ts1); timespecadd(&t.ts, &ts1, &t.ts); } else { nanotime(&t.ts); } *mp = sbcreatecontrol((caddr_t)&t.ts, sizeof(t.ts), SCM_REALTIME, SOL_SOCKET); if (*mp != NULL) { mp = &(*mp)->m_next; stamped = true; } break; case SO_TS_MONOTONIC: if ((m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) mbuf_tstmp2timespec(m, &t.ts); else nanouptime(&t.ts); *mp = sbcreatecontrol((caddr_t)&t.ts, sizeof(t.ts), SCM_MONOTONIC, SOL_SOCKET); if (*mp != NULL) { mp = &(*mp)->m_next; stamped = true; } break; default: panic("unknown (corrupted) so_ts_clock"); } if (stamped && (m->m_flags & (M_PKTHDR | M_TSTMP)) == (M_PKTHDR | M_TSTMP)) { struct sock_timestamp_info sti; bzero(&sti, sizeof(sti)); sti.st_info_flags = ST_INFO_HW; if ((m->m_flags & M_TSTMP_HPREC) != 0) sti.st_info_flags |= ST_INFO_HW_HPREC; *mp = sbcreatecontrol((caddr_t)&sti, sizeof(sti), SCM_TIME_INFO, SOL_SOCKET); if (*mp != NULL) mp = &(*mp)->m_next; } } #endif #define IS2292(inp, x, y) (((inp)->inp_flags & IN6P_RFC2292) ? (x) : (y)) /* RFC 2292 sec. 5 */ if ((inp->inp_flags & IN6P_PKTINFO) != 0) { struct in6_pktinfo pi6; if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { #ifdef INET struct ip *ip; ip = mtod(m, struct ip *); pi6.ipi6_addr.s6_addr32[0] = 0; pi6.ipi6_addr.s6_addr32[1] = 0; pi6.ipi6_addr.s6_addr32[2] = IPV6_ADDR_INT32_SMP; pi6.ipi6_addr.s6_addr32[3] = ip->ip_dst.s_addr; #else /* We won't hit this code */ bzero(&pi6.ipi6_addr, sizeof(struct in6_addr)); #endif } else { bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); in6_clearscope(&pi6.ipi6_addr); /* XXX */ } pi6.ipi6_ifindex = (m && m->m_pkthdr.rcvif) ? m->m_pkthdr.rcvif->if_index : 0; *mp = sbcreatecontrol((caddr_t) &pi6, sizeof(struct in6_pktinfo), IS2292(inp, IPV6_2292PKTINFO, IPV6_PKTINFO), IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; } if ((inp->inp_flags & IN6P_HOPLIMIT) != 0) { int hlim; if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { #ifdef INET struct ip *ip; ip = mtod(m, struct ip *); hlim = ip->ip_ttl; #else /* We won't hit this code */ hlim = 0; #endif } else { hlim = ip6->ip6_hlim & 0xff; } *mp = sbcreatecontrol((caddr_t) &hlim, sizeof(int), IS2292(inp, IPV6_2292HOPLIMIT, IPV6_HOPLIMIT), IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; } if ((inp->inp_flags & IN6P_TCLASS) != 0) { int tclass; if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { #ifdef INET struct ip *ip; ip = mtod(m, struct ip *); tclass = ip->ip_tos; #else /* We won't hit this code */ tclass = 0; #endif } else { u_int32_t flowinfo; flowinfo = (u_int32_t)ntohl(ip6->ip6_flow & IPV6_FLOWINFO_MASK); flowinfo >>= 20; tclass = flowinfo & 0xff; } *mp = sbcreatecontrol((caddr_t) &tclass, sizeof(int), IPV6_TCLASS, IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; } if (v4only != NULL) { if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { *v4only = 1; } else { *v4only = 0; } } return (mp); } void ip6_savecontrol(struct inpcb *inp, struct mbuf *m, struct mbuf **mp) { struct ip6_hdr *ip6; int v4only = 0; mp = ip6_savecontrol_v4(inp, m, mp, &v4only); if (v4only) return; ip6 = mtod(m, struct ip6_hdr *); /* * IPV6_HOPOPTS socket option. Recall that we required super-user * privilege for the option (see ip6_ctloutput), but it might be too * strict, since there might be some hop-by-hop options which can be * returned to normal user. * See also RFC 2292 section 6 (or RFC 3542 section 8). */ if ((inp->inp_flags & IN6P_HOPOPTS) != 0) { /* * Check if a hop-by-hop options header is contatined in the * received packet, and if so, store the options as ancillary * data. Note that a hop-by-hop options header must be * just after the IPv6 header, which is assured through the * IPv6 input processing. */ if (ip6->ip6_nxt == IPPROTO_HOPOPTS) { struct ip6_hbh *hbh; int hbhlen; hbh = (struct ip6_hbh *)(ip6 + 1); hbhlen = (hbh->ip6h_len + 1) << 3; /* * XXX: We copy the whole header even if a * jumbo payload option is included, the option which * is to be removed before returning according to * RFC2292. * Note: this constraint is removed in RFC3542 */ *mp = sbcreatecontrol((caddr_t)hbh, hbhlen, IS2292(inp, IPV6_2292HOPOPTS, IPV6_HOPOPTS), IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; } } if ((inp->inp_flags & (IN6P_RTHDR | IN6P_DSTOPTS)) != 0) { int nxt = ip6->ip6_nxt, off = sizeof(struct ip6_hdr); /* * Search for destination options headers or routing * header(s) through the header chain, and stores each * header as ancillary data. * Note that the order of the headers remains in * the chain of ancillary data. */ while (1) { /* is explicit loop prevention necessary? */ struct ip6_ext *ip6e = NULL; int elen; /* * if it is not an extension header, don't try to * pull it from the chain. */ switch (nxt) { case IPPROTO_DSTOPTS: case IPPROTO_ROUTING: case IPPROTO_HOPOPTS: case IPPROTO_AH: /* is it possible? */ break; default: goto loopend; } if (off + sizeof(*ip6e) > m->m_len) goto loopend; ip6e = (struct ip6_ext *)(mtod(m, caddr_t) + off); if (nxt == IPPROTO_AH) elen = (ip6e->ip6e_len + 2) << 2; else elen = (ip6e->ip6e_len + 1) << 3; if (off + elen > m->m_len) goto loopend; switch (nxt) { case IPPROTO_DSTOPTS: if (!(inp->inp_flags & IN6P_DSTOPTS)) break; *mp = sbcreatecontrol((caddr_t)ip6e, elen, IS2292(inp, IPV6_2292DSTOPTS, IPV6_DSTOPTS), IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; break; case IPPROTO_ROUTING: if (!(inp->inp_flags & IN6P_RTHDR)) break; *mp = sbcreatecontrol((caddr_t)ip6e, elen, IS2292(inp, IPV6_2292RTHDR, IPV6_RTHDR), IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; break; case IPPROTO_HOPOPTS: case IPPROTO_AH: /* is it possible? */ break; default: /* * other cases have been filtered in the above. * none will visit this case. here we supply * the code just in case (nxt overwritten or * other cases). */ goto loopend; } /* proceed with the next header. */ off += elen; nxt = ip6e->ip6e_nxt; ip6e = NULL; } loopend: ; } if (inp->inp_flags2 & INP_RECVFLOWID) { uint32_t flowid, flow_type; flowid = m->m_pkthdr.flowid; flow_type = M_HASHTYPE_GET(m); /* * XXX should handle the failure of one or the * other - don't populate both? */ *mp = sbcreatecontrol((caddr_t) &flowid, sizeof(uint32_t), IPV6_FLOWID, IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; *mp = sbcreatecontrol((caddr_t) &flow_type, sizeof(uint32_t), IPV6_FLOWTYPE, IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; } #ifdef RSS if (inp->inp_flags2 & INP_RECVRSSBUCKETID) { uint32_t flowid, flow_type; uint32_t rss_bucketid; flowid = m->m_pkthdr.flowid; flow_type = M_HASHTYPE_GET(m); if (rss_hash2bucket(flowid, flow_type, &rss_bucketid) == 0) { *mp = sbcreatecontrol((caddr_t) &rss_bucketid, sizeof(uint32_t), IPV6_RSSBUCKETID, IPPROTO_IPV6); if (*mp) mp = &(*mp)->m_next; } } #endif } #undef IS2292 void ip6_notify_pmtu(struct inpcb *inp, struct sockaddr_in6 *dst, u_int32_t mtu) { struct socket *so; struct mbuf *m_mtu; struct ip6_mtuinfo mtuctl; KASSERT(inp != NULL, ("%s: inp == NULL", __func__)); /* * Notify the error by sending IPV6_PATHMTU ancillary data if * application wanted to know the MTU value. * NOTE: we notify disconnected sockets, because some udp * applications keep sending sockets disconnected. * NOTE: our implementation doesn't notify connected sockets that has * foreign address that is different than given destination addresses * (this is permitted by RFC 3542). */ if ((inp->inp_flags & IN6P_MTU) == 0 || ( !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && !IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, &dst->sin6_addr))) return; mtuctl.ip6m_mtu = mtu; mtuctl.ip6m_addr = *dst; if (sa6_recoverscope(&mtuctl.ip6m_addr)) return; if ((m_mtu = sbcreatecontrol((caddr_t)&mtuctl, sizeof(mtuctl), IPV6_PATHMTU, IPPROTO_IPV6)) == NULL) return; so = inp->inp_socket; if (sbappendaddr(&so->so_rcv, (struct sockaddr *)dst, NULL, m_mtu) == 0) { soroverflow(so); m_freem(m_mtu); /* XXX: should count statistics */ } else sorwakeup(so); } /* * Get pointer to the previous header followed by the header * currently processed. */ int ip6_get_prevhdr(const struct mbuf *m, int off) { struct ip6_ext ip6e; struct ip6_hdr *ip6; int len, nlen, nxt; if (off == sizeof(struct ip6_hdr)) return (offsetof(struct ip6_hdr, ip6_nxt)); if (off < sizeof(struct ip6_hdr)) panic("%s: off < sizeof(struct ip6_hdr)", __func__); ip6 = mtod(m, struct ip6_hdr *); nxt = ip6->ip6_nxt; len = sizeof(struct ip6_hdr); nlen = 0; while (len < off) { m_copydata(m, len, sizeof(ip6e), (caddr_t)&ip6e); switch (nxt) { case IPPROTO_FRAGMENT: nlen = sizeof(struct ip6_frag); break; case IPPROTO_AH: nlen = (ip6e.ip6e_len + 2) << 2; break; default: nlen = (ip6e.ip6e_len + 1) << 3; } len += nlen; nxt = ip6e.ip6e_nxt; } return (len - nlen); } /* * get next header offset. m will be retained. */ int ip6_nexthdr(const struct mbuf *m, int off, int proto, int *nxtp) { struct ip6_hdr ip6; struct ip6_ext ip6e; struct ip6_frag fh; /* just in case */ if (m == NULL) panic("ip6_nexthdr: m == NULL"); if ((m->m_flags & M_PKTHDR) == 0 || m->m_pkthdr.len < off) return -1; switch (proto) { case IPPROTO_IPV6: if (m->m_pkthdr.len < off + sizeof(ip6)) return -1; m_copydata(m, off, sizeof(ip6), (caddr_t)&ip6); if (nxtp) *nxtp = ip6.ip6_nxt; off += sizeof(ip6); return off; case IPPROTO_FRAGMENT: /* * terminate parsing if it is not the first fragment, * it does not make sense to parse through it. */ if (m->m_pkthdr.len < off + sizeof(fh)) return -1; m_copydata(m, off, sizeof(fh), (caddr_t)&fh); /* IP6F_OFF_MASK = 0xfff8(BigEndian), 0xf8ff(LittleEndian) */ if (fh.ip6f_offlg & IP6F_OFF_MASK) return -1; if (nxtp) *nxtp = fh.ip6f_nxt; off += sizeof(struct ip6_frag); return off; case IPPROTO_AH: if (m->m_pkthdr.len < off + sizeof(ip6e)) return -1; m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e); if (nxtp) *nxtp = ip6e.ip6e_nxt; off += (ip6e.ip6e_len + 2) << 2; return off; case IPPROTO_HOPOPTS: case IPPROTO_ROUTING: case IPPROTO_DSTOPTS: if (m->m_pkthdr.len < off + sizeof(ip6e)) return -1; m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e); if (nxtp) *nxtp = ip6e.ip6e_nxt; off += (ip6e.ip6e_len + 1) << 3; return off; case IPPROTO_NONE: case IPPROTO_ESP: case IPPROTO_IPCOMP: /* give up */ return -1; default: return -1; } /* NOTREACHED */ } /* * get offset for the last header in the chain. m will be kept untainted. */ int ip6_lasthdr(const struct mbuf *m, int off, int proto, int *nxtp) { int newoff; int nxt; if (!nxtp) { nxt = -1; nxtp = &nxt; } while (1) { newoff = ip6_nexthdr(m, off, proto, nxtp); if (newoff < 0) return off; else if (newoff < off) return -1; /* invalid */ else if (newoff == off) return newoff; off = newoff; proto = *nxtp; } } /* * System control for IP6 */ u_char inet6ctlerrmap[PRC_NCMDS] = { 0, 0, 0, 0, 0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH, EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED, EMSGSIZE, EHOSTUNREACH, 0, 0, 0, 0, EHOSTUNREACH, 0, ENOPROTOOPT, ECONNREFUSED }; diff --git a/sys/netinet6/ip6_var.h b/sys/netinet6/ip6_var.h index de7a938a3289..632c3f9774e7 100644 --- a/sys/netinet6/ip6_var.h +++ b/sys/netinet6/ip6_var.h @@ -1,425 +1,429 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $ */ /*- * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)ip_var.h 8.1 (Berkeley) 6/10/93 * $FreeBSD$ */ #ifndef _NETINET6_IP6_VAR_H_ #define _NETINET6_IP6_VAR_H_ #include #ifdef _KERNEL struct ip6asfrag; /* frag6.c */ TAILQ_HEAD(ip6fraghead, ip6asfrag); /* * IP6 reassembly queue structure. Each fragment * being reassembled is attached to one of these structures. */ struct ip6q { struct ip6fraghead ip6q_frags; u_int32_t ip6q_ident; u_int8_t ip6q_nxt; u_int8_t ip6q_ecn; u_int8_t ip6q_ttl; struct in6_addr ip6q_src, ip6q_dst; TAILQ_ENTRY(ip6q) ip6q_tq; int ip6q_unfrglen; /* len of unfragmentable part */ int ip6q_nfrag; /* # of fragments */ struct label *ip6q_label; }; #endif /* _KERNEL */ /* * IP6 reinjecting structure. */ struct ip6_direct_ctx { uint32_t ip6dc_nxt; /* next header to process */ uint32_t ip6dc_off; /* offset to next header */ }; #if defined(_NETINET6_IN6_VAR_H_) && defined(_KERNEL) /* * Structure attached to inpcb.in6p_moptions and * passed to ip6_output when IPv6 multicast options are in use. * This structure is lazy-allocated. */ struct ip6_moptions { struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */ u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */ u_char im6o_multicast_loop; /* 1 >= hear sends if a member */ struct ip6_mfilter_head im6o_head; /* group membership list */ }; #else struct ip6_moptions; #endif /* * Control options for outgoing packets */ /* Routing header related info */ struct ip6po_rhinfo { struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */ }; #define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr #define ip6po_route ip6po_rhinfo.ip6po_rhi_route /* Nexthop related info */ struct ip6po_nhinfo { struct sockaddr *ip6po_nhi_nexthop; struct route_in6 ip6po_nhi_route; /* Route to the nexthop */ }; #define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop #define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route struct ip6_pktopts { struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */ int ip6po_hlim; /* Hoplimit for outgoing packets */ /* Outgoing IF/address information */ struct in6_pktinfo *ip6po_pktinfo; /* Next-hop address information */ struct ip6po_nhinfo ip6po_nhinfo; struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ /* Destination options header (before a routing header) */ struct ip6_dest *ip6po_dest1; /* Routing header related info. */ struct ip6po_rhinfo ip6po_rhinfo; /* Destination options header (after a routing header) */ struct ip6_dest *ip6po_dest2; int ip6po_tclass; /* traffic class */ int ip6po_minmtu; /* fragment vs PMTU discovery policy */ #define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast*/ #define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */ #define IP6PO_MINMTU_ALL 1 /* always send at min MTU */ int ip6po_prefer_tempaddr; /* whether temporary addresses are preferred as source address */ #define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */ #define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */ #define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */ int ip6po_flags; #if 0 /* parameters in this block is obsolete. do not reuse the values. */ #define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */ #define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */ #endif #define IP6PO_DONTFRAG 0x04 /* disable fragmentation (IPV6_DONTFRAG) */ #define IP6PO_USECOA 0x08 /* use care of address */ }; /* * Control options for incoming packets */ struct ip6stat { uint64_t ip6s_total; /* total packets received */ uint64_t ip6s_tooshort; /* packet too short */ uint64_t ip6s_toosmall; /* not enough data */ uint64_t ip6s_fragments; /* fragments received */ uint64_t ip6s_fragdropped; /* frags dropped(dups, out of space) */ uint64_t ip6s_fragtimeout; /* fragments timed out */ uint64_t ip6s_fragoverflow; /* fragments that exceeded limit */ uint64_t ip6s_forward; /* packets forwarded */ uint64_t ip6s_cantforward; /* packets rcvd for unreachable dest */ uint64_t ip6s_redirectsent; /* packets forwarded on same net */ uint64_t ip6s_delivered; /* datagrams delivered to upper level*/ uint64_t ip6s_localout; /* total ip packets generated here */ uint64_t ip6s_odropped; /* lost packets due to nobufs, etc. */ uint64_t ip6s_reassembled; /* total packets reassembled ok */ uint64_t ip6s_atomicfrags; /* atomic fragments */ uint64_t ip6s_fragmented; /* datagrams successfully fragmented */ uint64_t ip6s_ofragments; /* output fragments created */ uint64_t ip6s_cantfrag; /* don't fragment flag was set, etc. */ uint64_t ip6s_badoptions; /* error in option processing */ uint64_t ip6s_noroute; /* packets discarded due to no route */ uint64_t ip6s_badvers; /* ip6 version != 6 */ uint64_t ip6s_rawout; /* total raw ip packets generated */ uint64_t ip6s_badscope; /* scope error */ uint64_t ip6s_notmember; /* don't join this multicast group */ #define IP6S_HDRCNT 256 /* headers count */ uint64_t ip6s_nxthist[IP6S_HDRCNT]; /* next header history */ uint64_t ip6s_m1; /* one mbuf */ #define IP6S_M2MMAX 32 uint64_t ip6s_m2m[IP6S_M2MMAX]; /* two or more mbuf */ uint64_t ip6s_mext1; /* one ext mbuf */ uint64_t ip6s_mext2m; /* two or more ext mbuf */ uint64_t ip6s_exthdrtoolong; /* ext hdr are not contiguous */ uint64_t ip6s_nogif; /* no match gif found */ uint64_t ip6s_toomanyhdr; /* discarded due to too many headers */ /* * statistics for improvement of the source address selection * algorithm: * XXX: hardcoded 16 = # of ip6 multicast scope types + 1 */ #define IP6S_RULESMAX 16 #define IP6S_SCOPECNT 16 /* number of times that address selection fails */ uint64_t ip6s_sources_none; /* number of times that an address on the outgoing I/F is chosen */ uint64_t ip6s_sources_sameif[IP6S_SCOPECNT]; /* number of times that an address on a non-outgoing I/F is chosen */ uint64_t ip6s_sources_otherif[IP6S_SCOPECNT]; /* * number of times that an address that has the same scope * from the destination is chosen. */ uint64_t ip6s_sources_samescope[IP6S_SCOPECNT]; /* * number of times that an address that has a different scope * from the destination is chosen. */ uint64_t ip6s_sources_otherscope[IP6S_SCOPECNT]; /* number of times that a deprecated address is chosen */ uint64_t ip6s_sources_deprecated[IP6S_SCOPECNT]; /* number of times that each rule of source selection is applied. */ uint64_t ip6s_sources_rule[IP6S_RULESMAX]; }; #ifdef _KERNEL #include VNET_PCPUSTAT_DECLARE(struct ip6stat, ip6stat); #define IP6STAT_ADD(name, val) \ VNET_PCPUSTAT_ADD(struct ip6stat, ip6stat, name, (val)) #define IP6STAT_SUB(name, val) IP6STAT_ADD(name, -(val)) #define IP6STAT_INC(name) IP6STAT_ADD(name, 1) #define IP6STAT_DEC(name) IP6STAT_SUB(name, 1) #endif #ifdef _KERNEL /* flags passed to ip6_output as last parameter */ #define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */ #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ #define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ #ifdef __NO_STRICT_ALIGNMENT #define IP6_HDR_ALIGNED_P(ip) 1 #else #define IP6_HDR_ALIGNED_P(ip) ((((intptr_t) (ip)) & 3) == 0) #endif VNET_DECLARE(int, ip6_defhlim); /* default hop limit */ VNET_DECLARE(int, ip6_defmcasthlim); /* default multicast hop limit */ VNET_DECLARE(int, ip6_forwarding); /* act as router? */ VNET_DECLARE(int, ip6_use_deprecated); /* allow deprecated addr as source */ VNET_DECLARE(int, ip6_rr_prune); /* router renumbering prefix * walk list every 5 sec. */ VNET_DECLARE(int, ip6_mcast_pmtu); /* enable pMTU discovery for multicast? */ VNET_DECLARE(int, ip6_v6only); #define V_ip6_defhlim VNET(ip6_defhlim) #define V_ip6_defmcasthlim VNET(ip6_defmcasthlim) #define V_ip6_forwarding VNET(ip6_forwarding) #define V_ip6_use_deprecated VNET(ip6_use_deprecated) #define V_ip6_rr_prune VNET(ip6_rr_prune) #define V_ip6_mcast_pmtu VNET(ip6_mcast_pmtu) #define V_ip6_v6only VNET(ip6_v6only) VNET_DECLARE(struct socket *, ip6_mrouter); /* multicast routing daemon */ VNET_DECLARE(int, ip6_sendredirects); /* send IP redirects when forwarding? */ VNET_DECLARE(int, ip6_accept_rtadv); /* Acts as a host not a router */ VNET_DECLARE(int, ip6_no_radr); /* No defroute from RA */ VNET_DECLARE(int, ip6_norbit_raif); /* Disable R-bit in NA on RA * receiving IF. */ VNET_DECLARE(int, ip6_rfc6204w3); /* Accept defroute from RA even when forwarding enabled */ VNET_DECLARE(int, ip6_log_interval); VNET_DECLARE(time_t, ip6_log_time); VNET_DECLARE(int, ip6_hdrnestlimit); /* upper limit of # of extension * headers */ VNET_DECLARE(int, ip6_dad_count); /* DupAddrDetectionTransmits */ #define V_ip6_mrouter VNET(ip6_mrouter) #define V_ip6_sendredirects VNET(ip6_sendredirects) #define V_ip6_accept_rtadv VNET(ip6_accept_rtadv) #define V_ip6_no_radr VNET(ip6_no_radr) #define V_ip6_norbit_raif VNET(ip6_norbit_raif) #define V_ip6_rfc6204w3 VNET(ip6_rfc6204w3) #define V_ip6_log_interval VNET(ip6_log_interval) #define V_ip6_log_time VNET(ip6_log_time) #define V_ip6_hdrnestlimit VNET(ip6_hdrnestlimit) #define V_ip6_dad_count VNET(ip6_dad_count) VNET_DECLARE(int, ip6_auto_flowlabel); VNET_DECLARE(int, ip6_auto_linklocal); #define V_ip6_auto_flowlabel VNET(ip6_auto_flowlabel) #define V_ip6_auto_linklocal VNET(ip6_auto_linklocal) VNET_DECLARE(int, ip6_use_tempaddr); /* Whether to use temporary addresses */ VNET_DECLARE(int, ip6_prefer_tempaddr); /* Whether to prefer temporary * addresses in the source address * selection */ #define V_ip6_use_tempaddr VNET(ip6_use_tempaddr) #define V_ip6_prefer_tempaddr VNET(ip6_prefer_tempaddr) VNET_DECLARE(int, ip6_use_defzone); /* Whether to use the default scope * zone when unspecified */ #define V_ip6_use_defzone VNET(ip6_use_defzone) VNET_DECLARE(struct pfil_head *, inet6_pfil_head); #define V_inet6_pfil_head VNET(inet6_pfil_head) #define PFIL_INET6_NAME "inet6" +VNET_DECLARE(struct pfil_head *, inet6_local_pfil_head); +#define V_inet6_local_pfil_head VNET(inet6_local_pfil_head) +#define PFIL_INET6_LOCAL_NAME "inet6-local" + #ifdef IPSTEALTH VNET_DECLARE(int, ip6stealth); #define V_ip6stealth VNET(ip6stealth) #endif #ifdef EXPERIMENTAL VNET_DECLARE(int, nd6_ignore_ipv6_only_ra); #define V_nd6_ignore_ipv6_only_ra VNET(nd6_ignore_ipv6_only_ra) #endif extern struct pr_usrreqs rip6_usrreqs; struct sockopt; struct inpcb; int icmp6_ctloutput(struct socket *, struct sockopt *sopt); struct in6_ifaddr; void ip6_init(void); int ip6proto_register(short); int ip6proto_unregister(short); void ip6_input(struct mbuf *); void ip6_direct_input(struct mbuf *); void ip6_freepcbopts(struct ip6_pktopts *); int ip6_unknown_opt(u_int8_t *, struct mbuf *, int); int ip6_get_prevhdr(const struct mbuf *, int); int ip6_nexthdr(const struct mbuf *, int, int, int *); int ip6_lasthdr(const struct mbuf *, int, int, int *); extern int (*ip6_mforward)(struct ip6_hdr *, struct ifnet *, struct mbuf *); int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *, u_int32_t *); struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *, struct mbuf **, int *); void ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **); void ip6_notify_pmtu(struct inpcb *, struct sockaddr_in6 *, u_int32_t); int ip6_sysctl(int *, u_int, void *, size_t *, void *, size_t); void ip6_forward(struct mbuf *, int); void ip6_mloopback(struct ifnet *, struct mbuf *); int ip6_output(struct mbuf *, struct ip6_pktopts *, struct route_in6 *, int, struct ip6_moptions *, struct ifnet **, struct inpcb *); int ip6_ctloutput(struct socket *, struct sockopt *); int ip6_raw_ctloutput(struct socket *, struct sockopt *); void ip6_initpktopts(struct ip6_pktopts *); int ip6_setpktopts(struct mbuf *, struct ip6_pktopts *, struct ip6_pktopts *, struct ucred *, int); void ip6_clearpktopts(struct ip6_pktopts *, int); struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, int); int ip6_optlen(struct inpcb *); int ip6_deletefraghdr(struct mbuf *, int, int); int ip6_fragment(struct ifnet *, struct mbuf *, int, u_char, int, uint32_t); int route6_input(struct mbuf **, int *, int); void frag6_init(void); void frag6_destroy(void); int frag6_input(struct mbuf **, int *, int); void frag6_slowtimo(void); void frag6_drain(void); void rip6_init(void); int rip6_input(struct mbuf **, int *, int); void rip6_ctlinput(int, struct sockaddr *, void *); int rip6_ctloutput(struct socket *, struct sockopt *); int rip6_output(struct mbuf *, struct socket *, ...); int rip6_usrreq(struct socket *, int, struct mbuf *, struct mbuf *, struct mbuf *, struct thread *); int dest6_input(struct mbuf **, int *, int); int none_input(struct mbuf **, int *, int); int in6_selectsrc_socket(struct sockaddr_in6 *, struct ip6_pktopts *, struct inpcb *, struct ucred *, int, struct in6_addr *, int *); int in6_selectsrc_addr(uint32_t, const struct in6_addr *, uint32_t, struct ifnet *, struct in6_addr *, int *); int in6_selectroute(struct sockaddr_in6 *, struct ip6_pktopts *, struct ip6_moptions *, struct route_in6 *, struct ifnet **, struct nhop_object **, u_int, uint32_t); u_int32_t ip6_randomid(void); u_int32_t ip6_randomflowlabel(void); void in6_delayed_cksum(struct mbuf *m, uint32_t plen, u_short offset); #endif /* _KERNEL */ #endif /* !_NETINET6_IP6_VAR_H_ */ diff --git a/tests/sys/netpfil/common/Makefile b/tests/sys/netpfil/common/Makefile index 5ea3e7d9b687..99c81de3462e 100644 --- a/tests/sys/netpfil/common/Makefile +++ b/tests/sys/netpfil/common/Makefile @@ -1,31 +1,32 @@ # $FreeBSD$ PACKAGE= tests TESTSDIR= ${TESTSBASE}/sys/netpfil/common ATF_TESTS_SH+= \ dummynet \ pass_block \ nat \ + rdr \ tos \ fragments \ forward # Tests reuse jail names and so cannot run in parallel. TEST_METADATA+= is_exclusive=true ${PACKAGE}FILES+= \ utils.subr \ runner.subr \ pft_icmp_check.py \ pft_ping.py \ pft_synflood.py \ sniffer.py ${PACKAGE}FILESMODE_pft_icmp_check.py= 0555 ${PACKAGE}FILESMODE_pft_ping.py= 0555 ${PACKAGE}FILESMODE_pft_synflood.py= 0555 .include diff --git a/tests/sys/netpfil/pf/rdr.sh b/tests/sys/netpfil/common/rdr.sh similarity index 51% rename from tests/sys/netpfil/pf/rdr.sh rename to tests/sys/netpfil/common/rdr.sh index 983abe054a35..0c2169ce6b28 100644 --- a/tests/sys/netpfil/pf/rdr.sh +++ b/tests/sys/netpfil/common/rdr.sh @@ -1,73 +1,137 @@ # $FreeBSD$ # # SPDX-License-Identifier: BSD-2-Clause-FreeBSD # # Copyright (c) 2018 Kristof Provost # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. . $(atf_get_srcdir)/utils.subr +. $(atf_get_srcdir)/runner.subr -atf_test_case "basic" "cleanup" basic_head() { - atf_set descr 'Basic rdr test' + atf_set descr 'Basic IPv4 NAT test' atf_set require.user root } basic_body() { - pft_init + firewall=$1 + firewall_init $firewall + nat_init $firewall epair=$(vnet_mkepair) vnet_mkjail alcatraz ${epair}b ifconfig ${epair}a 192.0.2.2/24 up route add -net 198.51.100.0/24 192.0.2.1 jexec alcatraz ifconfig ${epair}b 192.0.2.1/24 up jexec alcatraz sysctl net.inet.ip.forwarding=1 - # Enable pf! - jexec alcatraz pfctl -e - pft_set_rules alcatraz \ - "rdr pass on ${epair}b proto tcp from any to 198.51.100.0/24 port 1234 -> 192.0.2.1 port 4321" + # Enable redirect filter rule + firewall_config alcatraz ${firewall} \ + "pf" \ + "rdr pass on ${epair}b proto tcp from any to 198.51.100.0/24 port 1234 -> 192.0.2.1 port 4321" \ + "ipfnat" \ + "rdr ${epair}b from any to 198.51.100.0/24 port = 1234 -> 192.0.2.1 port 4321 tcp" + echo "foo" | jexec alcatraz nc -N -l 4321 & sleep 1 result=$(nc -N -w 3 198.51.100.2 1234) if [ "$result" != "foo" ]; then atf_fail "Redirect failed" fi } basic_cleanup() { - pft_cleanup + firewall=$1 + firewall_cleanup $firewall } -atf_init_test_cases() +local_redirect_head() { - atf_add_test_case "basic" + atf_set descr 'Redirect local traffic test' + atf_set require.user root } + +local_redirect_body() +{ + firewall=$1 + firewall_init $firewall + nat_init $firewall + + bridge=$(vnet_mkbridge) + ifconfig ${bridge} 192.0.2.1/24 up + + epair1=$(vnet_mkepair) + epair2=$(vnet_mkepair) + + vnet_mkjail first ${epair1}b + ifconfig ${epair1}a up + ifconfig ${bridge} addm ${epair1}a + jexec first ifconfig ${epair1}b 192.0.2.2/24 up + jexec first ifconfig lo0 127.0.0.1/8 up + + vnet_mkjail second ${epair2}b + ifconfig ${epair2}a up + ifconfig ${bridge} addm ${epair2}a + jexec second ifconfig ${epair2}b 192.0.2.3/24 up + jexec second ifconfig lo0 127.0.0.1/8 up + jexec second sysctl net.inet.ip.forwarding=1 + + # Enable redirect filter rule + firewall_config second ${firewall} \ + "pf" \ + "rdr pass proto tcp from any to 192.0.2.3/24 port 1234 -> 192.0.2.2 port 4321" \ + "ipfnat" \ + "rdr '*' from any to 192.0.2.3/24 port = 1234 -> 192.0.2.2 port 4321 tcp" + + echo "foo" | jexec first nc -N -l 4321 & + sleep 1 + + # Verify that second can use its rule to redirect local connections to first + result=$(jexec second nc -N -w 3 192.0.2.3 1234) + if [ "$result" != "foo" ]; then + atf_fail "Redirect failed" + fi +} + +local_redirect_cleanup() +{ + firewall=$1 + firewall_cleanup $firewall +} + +setup_tests \ + basic \ + pf \ + ipfnat \ + local_redirect \ + pf \ + ipfnat + diff --git a/tests/sys/netpfil/common/utils.subr b/tests/sys/netpfil/common/utils.subr index 722271981af4..d0028e663c45 100644 --- a/tests/sys/netpfil/common/utils.subr +++ b/tests/sys/netpfil/common/utils.subr @@ -1,138 +1,142 @@ #- # SPDX-License-Identifier: BSD-2-Clause-FreeBSD # # Copyright (c) 2019 Ahsan Barkati # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # $FreeBSD$ # . $(atf_get_srcdir)/../../common/vnet.subr firewall_config() { jname=$1 shift fw=$1 shift while [ $# -gt 0 ]; do if [ $(is_firewall "$1") -eq 1 ]; then current_fw="$1" shift filename=${current_fw}.rule cwd=$(pwd) if [ -f ${current_fw}.rule ]; then rm ${current_fw}.rule fi fi rule=$1 echo $rule >> $filename shift done if [ ${fw} == "ipfw" ]; then jexec ${jname} ipfw -q -f flush jexec ${jname} /bin/sh $cwd/ipfw.rule elif [ ${fw} == "pf" ]; then jexec ${jname} pfctl -e jexec ${jname} pfctl -F all jexec ${jname} pfctl -f $cwd/pf.rule + jexec ${jname} pfilctl link -o pf:default-out inet-local + jexec ${jname} pfilctl link -o pf:default-out6 inet6-local elif [ ${fw} == "ipf" ]; then jexec ${jname} ipf -E jexec ${jname} ipf -Fa -f $cwd/ipf.rule elif [ ${fw} == "ipfnat" ]; then jexec ${jname} service ipfilter start jexec ${jname} ipnat -CF -f $cwd/ipfnat.rule + jexec ${jname} pfilctl link -o ipfilter:default-ip4 inet-local + jexec ${jname} pfilctl link -o ipfilter:default-ip6 inet6-local else atf_fail "$fw is not a valid firewall to configure" fi } firewall_cleanup() { firewall=$1 echo "Cleaning $firewall" vnet_cleanup } firewall_init() { firewall=$1 vnet_init if [ ${firewall} == "ipfw" ]; then if ! kldstat -q -m ipfw; then atf_skip "This test requires ipfw" fi elif [ ${firewall} == "pf" ]; then if [ ! -c /dev/pf ]; then atf_skip "This test requires pf" fi elif [ ${firewall} == "ipf" ]; then if ! kldstat -q -m ipfilter; then atf_skip "This test requires ipf" fi elif [ ${firewall} == "ipfnat" ]; then if ! kldstat -q -m ipfilter; then atf_skip "This test requires ipf" fi else atf_fail "$fw is not a valid firewall to initialize" fi } dummynet_init() { firewall=$1 if ! kldstat -q -m dummynet; then atf_skip "This test requires dummynet" fi if [ ${firewall} == "ipfw" ]; then # Nothing. This is okay. else atf_skip "${firewall} does not support dummynet" fi } nat_init() { firewall=$1 if [ ${firewall} == "ipfw" ]; then if ! kldstat -q -m ipfw_nat; then atf_skip "This test requires ipfw_nat" fi fi } is_firewall() { if [ "$1" = "pf" -o "$1" = "ipfw" -o "$1" = "ipf" -o "$1" = "ipfnat" ]; then echo 1 else echo 0 fi } diff --git a/tests/sys/netpfil/pf/Makefile b/tests/sys/netpfil/pf/Makefile index d0a17ec40f43..8f6b57797e23 100644 --- a/tests/sys/netpfil/pf/Makefile +++ b/tests/sys/netpfil/pf/Makefile @@ -1,57 +1,56 @@ # $FreeBSD$ PACKAGE= tests TESTSDIR= ${TESTSBASE}/sys/netpfil/pf TESTS_SUBDIRS+= ioctl ATF_TESTS_SH+= altq \ anchor \ checksum \ dup \ forward \ fragmentation \ get_state \ icmp \ killstate \ macro \ map_e \ names \ nat \ pass_block \ pfsync \ proxy \ - rdr \ ridentifier \ route_to \ rules_counter \ set_skip \ set_tos \ src_track \ syncookie \ synproxy \ table \ tos # Tests reuse jail names and so cannot run in parallel. TEST_METADATA+= is_exclusive=true ${PACKAGE}FILES+= CVE-2019-5597.py \ CVE-2019-5598.py \ echo_inetd.conf \ fragcommon.py \ frag-overindex.py \ frag-overlimit.py \ frag-overreplace.py \ pfsync_defer.py \ utils.subr ${PACKAGE}FILESMODE_CVE-2019-5597.py= 0555 ${PACKAGE}FILESMODE_CVE-2019-5598.py= 0555 ${PACKAGE}FILESMODE_fragcommon.py= 0555 ${PACKAGE}FILESMODE_frag-overindex.py= 0555 ${PACKAGE}FILESMODE_frag-overlimit.py= 0555 ${PACKAGE}FILESMODE_frag-overreplace.py= 0555 ${PACKAGE}FILESMODE_pfsync_defer.py= 0555 .include