2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1982, 1986, 1988, 1993
5 * The Regents of the University of California.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/cdefs.h>
35 #include "opt_inet6.h"
36 #include "opt_ipsec.h"
37 #include "opt_route.h"
39 #include <sys/param.h>
41 #include <sys/kernel.h>
42 #include <sys/eventhandler.h>
44 #include <sys/malloc.h>
48 #include <sys/protosw.h>
49 #include <sys/rwlock.h>
50 #include <sys/signalvar.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
54 #include <sys/sysctl.h>
55 #include <sys/systm.h>
60 #include <net/if_var.h>
61 #include <net/route.h>
62 #include <net/route/route_ctl.h>
65 #include <netinet/in.h>
66 #include <netinet/in_systm.h>
67 #include <netinet/in_fib.h>
68 #include <netinet/in_pcb.h>
69 #include <netinet/in_var.h>
70 #include <netinet/if_ether.h>
71 #include <netinet/ip.h>
72 #include <netinet/ip_var.h>
73 #include <netinet/ip_mroute.h>
74 #include <netinet/ip_icmp.h>
76 #include <netipsec/ipsec_support.h>
78 #include <machine/stdarg.h>
79 #include <security/mac/mac_framework.h>
81 extern ipproto_input_t *ip_protox[];
83 VNET_DEFINE(int, ip_defttl) = IPDEFTTL;
84 SYSCTL_INT(_net_inet_ip, IPCTL_DEFTTL, ttl, CTLFLAG_VNET | CTLFLAG_RW,
85 &VNET_NAME(ip_defttl), 0,
86 "Maximum TTL on IP packets");
88 VNET_DEFINE(struct inpcbinfo, ripcbinfo);
89 #define V_ripcbinfo VNET(ripcbinfo)
92 * Control and data hooks for ipfw, dummynet, divert and so on.
93 * The data hooks are not used here but it is convenient
94 * to keep them all in one place.
96 VNET_DEFINE(ip_fw_ctl_ptr_t, ip_fw_ctl_ptr) = NULL;
98 int (*ip_dn_ctl_ptr)(struct sockopt *);
99 int (*ip_dn_io_ptr)(struct mbuf **, struct ip_fw_args *);
100 void (*ip_divert_ptr)(struct mbuf *, bool);
101 int (*ng_ipfw_input_p)(struct mbuf **, struct ip_fw_args *, bool);
105 * Hooks for multicast routing. They all default to NULL, so leave them not
106 * initialized and rely on BSS being set to 0.
110 * The socket used to communicate with the multicast routing daemon.
112 VNET_DEFINE(struct socket *, ip_mrouter);
115 * The various mrouter and rsvp functions.
117 int (*ip_mrouter_set)(struct socket *, struct sockopt *);
118 int (*ip_mrouter_get)(struct socket *, struct sockopt *);
119 int (*ip_mrouter_done)(void);
120 int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *,
121 struct ip_moptions *);
122 int (*mrt_ioctl)(u_long, caddr_t, int);
123 int (*legal_vif_num)(int);
124 u_long (*ip_mcast_src)(int);
126 int (*rsvp_input_p)(struct mbuf **, int *, int);
127 int (*ip_rsvp_vif)(struct socket *, struct sockopt *);
128 void (*ip_rsvp_force_done)(struct socket *);
131 u_long rip_sendspace = 9216;
132 SYSCTL_ULONG(_net_inet_raw, OID_AUTO, maxdgram, CTLFLAG_RW,
133 &rip_sendspace, 0, "Maximum outgoing raw IP datagram size");
135 u_long rip_recvspace = 9216;
136 SYSCTL_ULONG(_net_inet_raw, OID_AUTO, recvspace, CTLFLAG_RW,
137 &rip_recvspace, 0, "Maximum space for incoming raw IP datagrams");
143 #define INP_PCBHASH_RAW_SIZE 256
144 #define INP_PCBHASH_RAW(proto, laddr, faddr, mask) \
145 (((proto) + (laddr) + (faddr)) % (mask) + 1)
149 rip_inshash(struct inpcb *inp)
151 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
152 struct inpcbhead *pcbhash;
155 INP_HASH_WLOCK_ASSERT(pcbinfo);
156 INP_WLOCK_ASSERT(inp);
158 if (inp->inp_ip_p != 0 &&
159 inp->inp_laddr.s_addr != INADDR_ANY &&
160 inp->inp_faddr.s_addr != INADDR_ANY) {
161 hash = INP_PCBHASH_RAW(inp->inp_ip_p, inp->inp_laddr.s_addr,
162 inp->inp_faddr.s_addr, pcbinfo->ipi_hashmask);
165 pcbhash = &pcbinfo->ipi_hash_exact[hash];
166 CK_LIST_INSERT_HEAD(pcbhash, inp, inp_hash_exact);
170 rip_delhash(struct inpcb *inp)
173 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
174 INP_WLOCK_ASSERT(inp);
176 CK_LIST_REMOVE(inp, inp_hash_exact);
180 INPCBSTORAGE_DEFINE(ripcbstor, inpcb, "rawinp", "ripcb", "rip", "riphash");
183 rip_init(void *arg __unused)
186 in_pcbinfo_init(&V_ripcbinfo, &ripcbstor, INP_PCBHASH_RAW_SIZE, 1);
188 VNET_SYSINIT(rip_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, rip_init, NULL);
192 rip_destroy(void *unused __unused)
195 in_pcbinfo_destroy(&V_ripcbinfo);
197 VNET_SYSUNINIT(raw_ip, SI_SUB_PROTO_DOMAIN, SI_ORDER_FOURTH, rip_destroy, NULL);
202 rip_append(struct inpcb *inp, struct ip *ip, struct mbuf *m,
203 struct sockaddr_in *ripsrc)
205 struct socket *so = inp->inp_socket;
206 struct mbuf *n, *opts = NULL;
208 INP_LOCK_ASSERT(inp);
210 #if defined(IPSEC) || defined(IPSEC_SUPPORT)
211 /* check AH/ESP integrity. */
212 if (IPSEC_ENABLED(ipv4) && IPSEC_CHECK_POLICY(ipv4, m, inp) != 0)
216 if (mac_inpcb_check_deliver(inp, m) != 0)
219 /* Check the minimum TTL for socket. */
220 if (inp->inp_ip_minttl && inp->inp_ip_minttl > ip->ip_ttl)
223 if ((n = m_copym(m, 0, M_COPYALL, M_NOWAIT)) == NULL)
226 if ((inp->inp_flags & INP_CONTROLOPTS) ||
227 (so->so_options & (SO_TIMESTAMP | SO_BINTIME)))
228 ip_savecontrol(inp, &opts, ip, n);
229 SOCKBUF_LOCK(&so->so_rcv);
230 if (sbappendaddr_locked(&so->so_rcv,
231 (struct sockaddr *)ripsrc, n, opts) == 0) {
232 soroverflow_locked(so);
238 sorwakeup_locked(so);
243 struct rip_inp_match_ctx {
249 rip_inp_match1(const struct inpcb *inp, void *v)
251 struct rip_inp_match_ctx *ctx = v;
253 if (inp->inp_ip_p != ctx->proto)
256 /* XXX inp locking */
257 if ((inp->inp_vflag & INP_IPV4) == 0)
260 if (inp->inp_laddr.s_addr != ctx->ip->ip_dst.s_addr)
262 if (inp->inp_faddr.s_addr != ctx->ip->ip_src.s_addr)
268 rip_inp_match2(const struct inpcb *inp, void *v)
270 struct rip_inp_match_ctx *ctx = v;
272 if (inp->inp_ip_p && inp->inp_ip_p != ctx->proto)
275 /* XXX inp locking */
276 if ((inp->inp_vflag & INP_IPV4) == 0)
279 if (!in_nullhost(inp->inp_laddr) &&
280 !in_hosteq(inp->inp_laddr, ctx->ip->ip_dst))
282 if (!in_nullhost(inp->inp_faddr) &&
283 !in_hosteq(inp->inp_faddr, ctx->ip->ip_src))
289 * Setup generic address and protocol structures for raw_input routine, then
290 * pass them along with mbuf chain.
293 rip_input(struct mbuf **mp, int *offp, int proto)
295 struct rip_inp_match_ctx ctx = {
296 .ip = mtod(*mp, struct ip *),
299 struct inpcb_iterator inpi = INP_ITERATOR(&V_ripcbinfo,
300 INPLOOKUP_RLOCKPCB, rip_inp_match1, &ctx);
302 struct mbuf *m = *mp;
304 struct sockaddr_in ripsrc;
310 bzero(&ripsrc, sizeof(ripsrc));
311 ripsrc.sin_len = sizeof(ripsrc);
312 ripsrc.sin_family = AF_INET;
313 ripsrc.sin_addr = ctx.ip->ip_src;
315 ifp = m->m_pkthdr.rcvif;
317 inpi.hash = INP_PCBHASH_RAW(proto, ctx.ip->ip_src.s_addr,
318 ctx.ip->ip_dst.s_addr, V_ripcbinfo.ipi_hashmask);
319 while ((inp = inp_next(&inpi)) != NULL) {
320 INP_RLOCK_ASSERT(inp);
321 if (jailed_without_vnet(inp->inp_cred) &&
322 prison_check_ip4(inp->inp_cred, &ctx.ip->ip_dst) != 0) {
324 * XXX: If faddr was bound to multicast group,
325 * jailed raw socket will drop datagram.
329 appended += rip_append(inp, ctx.ip, m, &ripsrc);
333 inpi.match = rip_inp_match2;
334 MPASS(inpi.inp == NULL);
335 while ((inp = inp_next(&inpi)) != NULL) {
336 INP_RLOCK_ASSERT(inp);
337 if (jailed_without_vnet(inp->inp_cred) &&
338 !IN_MULTICAST(ntohl(ctx.ip->ip_dst.s_addr)) &&
339 prison_check_ip4(inp->inp_cred, &ctx.ip->ip_dst) != 0)
341 * Allow raw socket in jail to receive multicast;
342 * assume process had PRIV_NETINET_RAW at attach,
343 * and fall through into normal filter path if so.
347 * If this raw socket has multicast state, and we
348 * have received a multicast, check if this socket
349 * should receive it, as multicast filtering is now
350 * the responsibility of the transport layer.
352 if (inp->inp_moptions != NULL &&
353 IN_MULTICAST(ntohl(ctx.ip->ip_dst.s_addr))) {
355 * If the incoming datagram is for IGMP, allow it
356 * through unconditionally to the raw socket.
358 * In the case of IGMPv2, we may not have explicitly
359 * joined the group, and may have set IFF_ALLMULTI
360 * on the interface. imo_multi_filter() may discard
361 * control traffic we actually need to see.
363 * Userland multicast routing daemons should continue
364 * filter the control traffic appropriately.
368 blocked = MCAST_PASS;
369 if (proto != IPPROTO_IGMP) {
370 struct sockaddr_in group;
372 bzero(&group, sizeof(struct sockaddr_in));
373 group.sin_len = sizeof(struct sockaddr_in);
374 group.sin_family = AF_INET;
375 group.sin_addr = ctx.ip->ip_dst;
377 blocked = imo_multi_filter(inp->inp_moptions,
379 (struct sockaddr *)&group,
380 (struct sockaddr *)&ripsrc);
383 if (blocked != MCAST_PASS) {
384 IPSTAT_INC(ips_notmember);
388 appended += rip_append(inp, ctx.ip, m, &ripsrc);
390 if (appended == 0 && ip_protox[ctx.ip->ip_p] == rip_input) {
391 IPSTAT_INC(ips_noproto);
392 IPSTAT_DEC(ips_delivered);
393 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL, 0, 0);
396 return (IPPROTO_DONE);
400 * Generate IP header and pass packet to ip_output. Tack on options user may
401 * have setup with control call.
404 rip_send(struct socket *so, int pruflags, struct mbuf *m, struct sockaddr *nam,
405 struct mbuf *control, struct thread *td)
407 struct epoch_tracker et;
411 int error, flags, cnt, hlen;
412 u_char opttype, optlen, *cp;
415 KASSERT(inp != NULL, ("rip_send: inp == NULL"));
417 if (control != NULL) {
422 if (so->so_state & SS_ISCONNECTED) {
428 dst = &inp->inp_faddr.s_addr;
432 else if (nam->sa_family != AF_INET)
433 error = EAFNOSUPPORT;
434 else if (nam->sa_len != sizeof(struct sockaddr_in))
442 dst = &((struct sockaddr_in *)nam)->sin_addr.s_addr;
445 flags = ((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0) |
449 * If the user handed us a complete IP packet, use it. Otherwise,
450 * allocate an mbuf for a header and fill it in.
452 if ((inp->inp_flags & INP_HDRINCL) == 0) {
453 if (m->m_pkthdr.len + sizeof(struct ip) > IP_MAXPACKET) {
457 M_PREPEND(m, sizeof(struct ip), M_NOWAIT);
462 ip = mtod(m, struct ip *);
463 ip->ip_tos = inp->inp_ip_tos;
464 if (inp->inp_flags & INP_DONTFRAG)
465 ip->ip_off = htons(IP_DF);
467 ip->ip_off = htons(0);
468 ip->ip_p = inp->inp_ip_p;
469 ip->ip_len = htons(m->m_pkthdr.len);
470 ip->ip_src = inp->inp_laddr;
471 ip->ip_dst.s_addr = *dst;
473 if (CALC_FLOWID_OUTBOUND) {
474 uint32_t hash_type, hash_val;
476 hash_val = fib4_calc_software_hash(ip->ip_src,
477 ip->ip_dst, 0, 0, ip->ip_p, &hash_type);
478 m->m_pkthdr.flowid = hash_val;
479 M_HASHTYPE_SET(m, hash_type);
480 flags |= IP_NODEFAULTFLOWID;
483 if (jailed(inp->inp_cred)) {
485 * prison_local_ip4() would be good enough but would
486 * let a source of INADDR_ANY pass, which we do not
487 * want to see from jails.
489 if (ip->ip_src.s_addr == INADDR_ANY) {
491 error = in_pcbladdr(inp, &ip->ip_dst,
492 &ip->ip_src, inp->inp_cred);
495 error = prison_local_ip4(inp->inp_cred,
504 ip->ip_ttl = inp->inp_ip_ttl;
506 if (m->m_pkthdr.len > IP_MAXPACKET) {
510 if (m->m_pkthdr.len < sizeof(*ip)) {
514 m = m_pullup(m, sizeof(*ip));
517 ip = mtod(m, struct ip *);
518 hlen = ip->ip_hl << 2;
519 if (m->m_len < hlen) {
520 m = m_pullup(m, hlen);
523 ip = mtod(m, struct ip *);
526 if (CALC_FLOWID_OUTBOUND) {
527 uint32_t hash_type, hash_val;
529 hash_val = fib4_calc_software_hash(ip->ip_dst,
530 ip->ip_src, 0, 0, ip->ip_p, &hash_type);
531 m->m_pkthdr.flowid = hash_val;
532 M_HASHTYPE_SET(m, hash_type);
533 flags |= IP_NODEFAULTFLOWID;
538 * Don't allow both user specified and setsockopt options,
539 * and don't allow packet length sizes that will crash.
541 if ((hlen < sizeof (*ip))
542 || ((hlen > sizeof (*ip)) && inp->inp_options)
543 || (ntohs(ip->ip_len) != m->m_pkthdr.len)) {
548 error = prison_check_ip4(inp->inp_cred, &ip->ip_src);
555 * Don't allow IP options which do not have the required
556 * structure as specified in section 3.1 of RFC 791 on
559 cp = (u_char *)(ip + 1);
560 cnt = hlen - sizeof (struct ip);
561 for (; cnt > 0; cnt -= optlen, cp += optlen) {
562 opttype = cp[IPOPT_OPTVAL];
563 if (opttype == IPOPT_EOL)
565 if (opttype == IPOPT_NOP) {
569 if (cnt < IPOPT_OLEN + sizeof(u_char)) {
574 optlen = cp[IPOPT_OLEN];
575 if (optlen < IPOPT_OLEN + sizeof(u_char) ||
583 * This doesn't allow application to specify ID of zero,
584 * but we got this limitation from the beginning of history.
590 * XXX prevent ip_output from overwriting header fields.
592 flags |= IP_RAWOUTPUT;
593 IPSTAT_INC(ips_rawout);
596 if (inp->inp_flags & INP_ONESBCAST)
597 flags |= IP_SENDONES;
600 mac_inpcb_create_mbuf(inp, m);
604 error = ip_output(m, inp->inp_options, NULL, flags,
605 inp->inp_moptions, inp);
612 * Raw IP socket option processing.
614 * IMPORTANT NOTE regarding access control: Traditionally, raw sockets could
615 * only be created by a privileged process, and as such, socket option
616 * operations to manage system properties on any raw socket were allowed to
617 * take place without explicit additional access control checks. However,
618 * raw sockets can now also be created in jail(), and therefore explicit
619 * checks are now required. Likewise, raw sockets can be used by a process
620 * after it gives up privilege, so some caution is required. For options
621 * passed down to the IP layer via ip_ctloutput(), checks are assumed to be
622 * performed in ip_ctloutput() and therefore no check occurs here.
623 * Unilaterally checking priv_check() here breaks normal IP socket option
624 * operations on raw sockets.
626 * When adding new socket options here, make sure to add access control
627 * checks here as necessary.
629 * XXX-BZ inp locking?
632 rip_ctloutput(struct socket *so, struct sockopt *sopt)
634 struct inpcb *inp = sotoinpcb(so);
637 if (sopt->sopt_level != IPPROTO_IP) {
638 if ((sopt->sopt_level == SOL_SOCKET) &&
639 (sopt->sopt_name == SO_SETFIB)) {
640 inp->inp_inc.inc_fibnum = so->so_fibnum;
647 switch (sopt->sopt_dir) {
649 switch (sopt->sopt_name) {
651 optval = inp->inp_flags & INP_HDRINCL;
652 error = sooptcopyout(sopt, &optval, sizeof optval);
655 case IP_FW3: /* generic ipfw v.3 functions */
656 case IP_FW_ADD: /* ADD actually returns the body... */
658 case IP_FW_TABLE_GETSIZE:
659 case IP_FW_TABLE_LIST:
660 case IP_FW_NAT_GET_CONFIG:
661 case IP_FW_NAT_GET_LOG:
662 if (V_ip_fw_ctl_ptr != NULL)
663 error = V_ip_fw_ctl_ptr(sopt);
668 case IP_DUMMYNET3: /* generic dummynet v.3 functions */
669 case IP_DUMMYNET_GET:
670 if (ip_dn_ctl_ptr != NULL)
671 error = ip_dn_ctl_ptr(sopt);
684 case MRT_API_SUPPORT:
686 case MRT_ADD_BW_UPCALL:
687 case MRT_DEL_BW_UPCALL:
688 error = priv_check(curthread, PRIV_NETINET_MROUTE);
691 if (inp->inp_ip_p != IPPROTO_IGMP)
693 error = ip_mrouter_get ? ip_mrouter_get(so, sopt) :
698 error = ip_ctloutput(so, sopt);
704 switch (sopt->sopt_name) {
706 error = sooptcopyin(sopt, &optval, sizeof optval,
711 inp->inp_flags |= INP_HDRINCL;
713 inp->inp_flags &= ~INP_HDRINCL;
716 case IP_FW3: /* generic ipfw v.3 functions */
722 case IP_FW_TABLE_ADD:
723 case IP_FW_TABLE_DEL:
724 case IP_FW_TABLE_FLUSH:
727 if (V_ip_fw_ctl_ptr != NULL)
728 error = V_ip_fw_ctl_ptr(sopt);
733 case IP_DUMMYNET3: /* generic dummynet v.3 functions */
734 case IP_DUMMYNET_CONFIGURE:
735 case IP_DUMMYNET_DEL:
736 case IP_DUMMYNET_FLUSH:
737 if (ip_dn_ctl_ptr != NULL)
738 error = ip_dn_ctl_ptr(sopt);
740 error = ENOPROTOOPT ;
744 error = priv_check(curthread, PRIV_NETINET_MROUTE);
747 if (inp->inp_ip_p != IPPROTO_RSVP)
749 error = ip_rsvp_init(so);
753 error = priv_check(curthread, PRIV_NETINET_MROUTE);
756 error = ip_rsvp_done();
760 case IP_RSVP_VIF_OFF:
761 error = priv_check(curthread, PRIV_NETINET_MROUTE);
764 if (inp->inp_ip_p != IPPROTO_RSVP)
766 error = ip_rsvp_vif ?
767 ip_rsvp_vif(so, sopt) : EINVAL;
778 case MRT_API_SUPPORT:
780 case MRT_ADD_BW_UPCALL:
781 case MRT_DEL_BW_UPCALL:
782 error = priv_check(curthread, PRIV_NETINET_MROUTE);
785 if (inp->inp_ip_p != IPPROTO_IGMP)
787 error = ip_mrouter_set ? ip_mrouter_set(so, sopt) :
792 error = ip_ctloutput(so, sopt);
802 rip_ctlinput(struct icmp *icmp)
804 #if defined(IPSEC) || defined(IPSEC_SUPPORT)
805 if (IPSEC_ENABLED(ipv4))
806 IPSEC_CTLINPUT(ipv4, icmp);
811 rip_attach(struct socket *so, int proto, struct thread *td)
817 KASSERT(inp == NULL, ("rip_attach: inp != NULL"));
819 error = priv_check(td, PRIV_NETINET_RAW);
822 if (proto >= IPPROTO_MAX || proto < 0)
823 return EPROTONOSUPPORT;
824 error = soreserve(so, rip_sendspace, rip_recvspace);
827 error = in_pcballoc(so, &V_ripcbinfo);
830 inp = (struct inpcb *)so->so_pcb;
831 inp->inp_ip_p = proto;
832 inp->inp_ip_ttl = V_ip_defttl;
833 INP_HASH_WLOCK(&V_ripcbinfo);
835 INP_HASH_WUNLOCK(&V_ripcbinfo);
841 rip_detach(struct socket *so)
846 KASSERT(inp != NULL, ("rip_detach: inp == NULL"));
847 KASSERT(inp->inp_faddr.s_addr == INADDR_ANY,
848 ("rip_detach: not closed"));
850 /* Disable mrouter first */
851 if (so == V_ip_mrouter && ip_mrouter_done)
855 INP_HASH_WLOCK(&V_ripcbinfo);
857 INP_HASH_WUNLOCK(&V_ripcbinfo);
859 if (ip_rsvp_force_done)
860 ip_rsvp_force_done(so);
861 if (so == V_ip_rsvpd)
867 rip_dodisconnect(struct socket *so, struct inpcb *inp)
869 struct inpcbinfo *pcbinfo;
871 pcbinfo = inp->inp_pcbinfo;
873 INP_HASH_WLOCK(pcbinfo);
875 inp->inp_faddr.s_addr = INADDR_ANY;
877 INP_HASH_WUNLOCK(pcbinfo);
879 so->so_state &= ~SS_ISCONNECTED;
885 rip_abort(struct socket *so)
890 KASSERT(inp != NULL, ("rip_abort: inp == NULL"));
892 rip_dodisconnect(so, inp);
896 rip_close(struct socket *so)
901 KASSERT(inp != NULL, ("rip_close: inp == NULL"));
903 rip_dodisconnect(so, inp);
907 rip_disconnect(struct socket *so)
911 if ((so->so_state & SS_ISCONNECTED) == 0)
915 KASSERT(inp != NULL, ("rip_disconnect: inp == NULL"));
917 rip_dodisconnect(so, inp);
922 rip_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
924 struct sockaddr_in *addr = (struct sockaddr_in *)nam;
928 if (nam->sa_family != AF_INET)
929 return (EAFNOSUPPORT);
930 if (nam->sa_len != sizeof(*addr))
933 error = prison_check_ip4(td->td_ucred, &addr->sin_addr);
938 KASSERT(inp != NULL, ("rip_bind: inp == NULL"));
940 if (CK_STAILQ_EMPTY(&V_ifnet) ||
941 (addr->sin_family != AF_INET && addr->sin_family != AF_IMPLINK) ||
942 (addr->sin_addr.s_addr &&
943 (inp->inp_flags & INP_BINDANY) == 0 &&
944 ifa_ifwithaddr_check((struct sockaddr *)addr) == 0))
945 return (EADDRNOTAVAIL);
948 INP_HASH_WLOCK(&V_ripcbinfo);
950 inp->inp_laddr = addr->sin_addr;
952 INP_HASH_WUNLOCK(&V_ripcbinfo);
958 rip_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
960 struct sockaddr_in *addr = (struct sockaddr_in *)nam;
963 if (nam->sa_len != sizeof(*addr))
965 if (CK_STAILQ_EMPTY(&V_ifnet))
966 return (EADDRNOTAVAIL);
967 if (addr->sin_family != AF_INET && addr->sin_family != AF_IMPLINK)
968 return (EAFNOSUPPORT);
971 KASSERT(inp != NULL, ("rip_connect: inp == NULL"));
974 INP_HASH_WLOCK(&V_ripcbinfo);
976 inp->inp_faddr = addr->sin_addr;
978 INP_HASH_WUNLOCK(&V_ripcbinfo);
985 rip_shutdown(struct socket *so, enum shutdown_how how)
989 if (!(so->so_state & SS_ISCONNECTED)) {
1011 rip_pcblist(SYSCTL_HANDLER_ARGS)
1013 struct inpcb_iterator inpi = INP_ALL_ITERATOR(&V_ripcbinfo,
1014 INPLOOKUP_RLOCKPCB);
1019 if (req->newptr != 0)
1022 if (req->oldptr == 0) {
1025 n = V_ripcbinfo.ipi_count;
1026 n += imax(n / 8, 10);
1027 req->oldidx = 2 * (sizeof xig) + n * sizeof(struct xinpcb);
1031 if ((error = sysctl_wire_old_buffer(req, 0)) != 0)
1034 bzero(&xig, sizeof(xig));
1035 xig.xig_len = sizeof xig;
1036 xig.xig_count = V_ripcbinfo.ipi_count;
1037 xig.xig_gen = V_ripcbinfo.ipi_gencnt;
1038 xig.xig_sogen = so_gencnt;
1039 error = SYSCTL_OUT(req, &xig, sizeof xig);
1043 while ((inp = inp_next(&inpi)) != NULL) {
1044 if (inp->inp_gencnt <= xig.xig_gen &&
1045 cr_canseeinpcb(req->td->td_ucred, inp) == 0) {
1048 in_pcbtoxinpcb(inp, &xi);
1049 error = SYSCTL_OUT(req, &xi, sizeof xi);
1059 * Give the user an updated idea of our state. If the
1060 * generation differs from what we told her before, she knows
1061 * that something happened while we were processing this
1062 * request, and it might be necessary to retry.
1064 xig.xig_gen = V_ripcbinfo.ipi_gencnt;
1065 xig.xig_sogen = so_gencnt;
1066 xig.xig_count = V_ripcbinfo.ipi_count;
1067 error = SYSCTL_OUT(req, &xig, sizeof xig);
1073 SYSCTL_PROC(_net_inet_raw, OID_AUTO/*XXX*/, pcblist,
1074 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
1075 rip_pcblist, "S,xinpcb",
1076 "List of active raw IP sockets");
1079 struct protosw rip_protosw = {
1080 .pr_type = SOCK_RAW,
1081 .pr_flags = PR_ATOMIC|PR_ADDR,
1082 .pr_ctloutput = rip_ctloutput,
1083 .pr_abort = rip_abort,
1084 .pr_attach = rip_attach,
1085 .pr_bind = rip_bind,
1086 .pr_connect = rip_connect,
1087 .pr_control = in_control,
1088 .pr_detach = rip_detach,
1089 .pr_disconnect = rip_disconnect,
1090 .pr_peeraddr = in_getpeeraddr,
1091 .pr_send = rip_send,
1092 .pr_shutdown = rip_shutdown,
1093 .pr_sockaddr = in_getsockaddr,
1094 .pr_sosetlabel = in_pcbsosetlabel,
1095 .pr_close = rip_close