| 1 | /* $NetBSD: udp6_usrreq.c,v 1.126 2016/11/18 06:50:04 knakahara Exp $ */ |
| 2 | /* $KAME: udp6_usrreq.c,v 1.86 2001/05/27 17:33:00 itojun Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 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 project 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. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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) |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 30 | * SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | * Copyright (c) 1982, 1986, 1989, 1993 |
| 35 | * The Regents of the University of California. All rights reserved. |
| 36 | * |
| 37 | * Redistribution and use in source and binary forms, with or without |
| 38 | * modification, are permitted provided that the following conditions |
| 39 | * are met: |
| 40 | * 1. Redistributions of source code must retain the above copyright |
| 41 | * notice, this list of conditions and the following disclaimer. |
| 42 | * 2. Redistributions in binary form must reproduce the above copyright |
| 43 | * notice, this list of conditions and the following disclaimer in the |
| 44 | * documentation and/or other materials provided with the distribution. |
| 45 | * 3. Neither the name of the University nor the names of its contributors |
| 46 | * may be used to endorse or promote products derived from this software |
| 47 | * without specific prior written permission. |
| 48 | * |
| 49 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 50 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 51 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 52 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 53 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 54 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 55 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 56 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 57 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 58 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 59 | * SUCH DAMAGE. |
| 60 | * |
| 61 | * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 |
| 62 | */ |
| 63 | |
| 64 | #include <sys/cdefs.h> |
| 65 | __KERNEL_RCSID(0, "$NetBSD: udp6_usrreq.c,v 1.126 2016/11/18 06:50:04 knakahara Exp $" ); |
| 66 | |
| 67 | #ifdef _KERNEL_OPT |
| 68 | #include "opt_inet.h" |
| 69 | #include "opt_inet_csum.h" |
| 70 | #include "opt_ipsec.h" |
| 71 | #include "opt_net_mpsafe.h" |
| 72 | #endif |
| 73 | |
| 74 | #include <sys/param.h> |
| 75 | #include <sys/mbuf.h> |
| 76 | #include <sys/protosw.h> |
| 77 | #include <sys/socket.h> |
| 78 | #include <sys/socketvar.h> |
| 79 | #include <sys/systm.h> |
| 80 | #include <sys/proc.h> |
| 81 | #include <sys/syslog.h> |
| 82 | #include <sys/domain.h> |
| 83 | #include <sys/sysctl.h> |
| 84 | |
| 85 | #include <net/if.h> |
| 86 | #include <net/if_types.h> |
| 87 | |
| 88 | #include <netinet/in.h> |
| 89 | #include <netinet/in_var.h> |
| 90 | #include <netinet/in_systm.h> |
| 91 | #include <netinet/in_offload.h> |
| 92 | #include <netinet/ip.h> |
| 93 | #include <netinet/ip_var.h> |
| 94 | #include <netinet/in_pcb.h> |
| 95 | #include <netinet/udp.h> |
| 96 | #include <netinet/udp_var.h> |
| 97 | #include <netinet/udp_private.h> |
| 98 | |
| 99 | #include <netinet/ip6.h> |
| 100 | #include <netinet/icmp6.h> |
| 101 | #include <netinet6/ip6_var.h> |
| 102 | #include <netinet6/ip6_private.h> |
| 103 | #include <netinet6/in6_pcb.h> |
| 104 | #include <netinet6/udp6_var.h> |
| 105 | #include <netinet6/udp6_private.h> |
| 106 | #include <netinet6/ip6protosw.h> |
| 107 | #include <netinet6/scope6_var.h> |
| 108 | |
| 109 | #ifdef IPSEC |
| 110 | #include <netipsec/ipsec.h> |
| 111 | #include <netipsec/ipsec_var.h> |
| 112 | #include <netipsec/ipsec_private.h> |
| 113 | #ifdef INET6 |
| 114 | #include <netipsec/ipsec6.h> |
| 115 | #endif |
| 116 | #endif /* IPSEC */ |
| 117 | |
| 118 | #include "faith.h" |
| 119 | #if defined(NFAITH) && NFAITH > 0 |
| 120 | #include <net/if_faith.h> |
| 121 | #endif |
| 122 | |
| 123 | /* |
| 124 | * UDP protocol implementation. |
| 125 | * Per RFC 768, August, 1980. |
| 126 | */ |
| 127 | |
| 128 | extern struct inpcbtable udbtable; |
| 129 | |
| 130 | percpu_t *udp6stat_percpu; |
| 131 | |
| 132 | /* UDP on IP6 parameters */ |
| 133 | static int udp6_sendspace = 9216; /* really max datagram size */ |
| 134 | static int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6)); |
| 135 | /* 40 1K datagrams */ |
| 136 | |
| 137 | static void udp6_notify(struct in6pcb *, int); |
| 138 | static void sysctl_net_inet6_udp6_setup(struct sysctllog **); |
| 139 | |
| 140 | #ifdef UDP_CSUM_COUNTERS |
| 141 | #include <sys/device.h> |
| 142 | struct evcnt udp6_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
| 143 | NULL, "udp6" , "hwcsum bad" ); |
| 144 | struct evcnt udp6_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
| 145 | NULL, "udp6" , "hwcsum ok" ); |
| 146 | struct evcnt udp6_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
| 147 | NULL, "udp6" , "hwcsum data" ); |
| 148 | struct evcnt udp6_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
| 149 | NULL, "udp6" , "swcsum" ); |
| 150 | |
| 151 | EVCNT_ATTACH_STATIC(udp6_hwcsum_bad); |
| 152 | EVCNT_ATTACH_STATIC(udp6_hwcsum_ok); |
| 153 | EVCNT_ATTACH_STATIC(udp6_hwcsum_data); |
| 154 | EVCNT_ATTACH_STATIC(udp6_swcsum); |
| 155 | |
| 156 | #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ |
| 157 | #else |
| 158 | #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */ |
| 159 | #endif |
| 160 | |
| 161 | void |
| 162 | udp6_init(void) |
| 163 | { |
| 164 | sysctl_net_inet6_udp6_setup(NULL); |
| 165 | udp6stat_percpu = percpu_alloc(sizeof(uint64_t) * UDP6_NSTATS); |
| 166 | |
| 167 | udp_init_common(); |
| 168 | } |
| 169 | |
| 170 | /* |
| 171 | * Notify a udp user of an asynchronous error; |
| 172 | * just wake up so that he can collect error status. |
| 173 | */ |
| 174 | static void |
| 175 | udp6_notify(struct in6pcb *in6p, int errno) |
| 176 | { |
| 177 | in6p->in6p_socket->so_error = errno; |
| 178 | sorwakeup(in6p->in6p_socket); |
| 179 | sowwakeup(in6p->in6p_socket); |
| 180 | } |
| 181 | |
| 182 | void * |
| 183 | udp6_ctlinput(int cmd, const struct sockaddr *sa, void *d) |
| 184 | { |
| 185 | struct udphdr uh; |
| 186 | struct ip6_hdr *ip6; |
| 187 | const struct sockaddr_in6 *sa6 = (const struct sockaddr_in6 *)sa; |
| 188 | struct mbuf *m; |
| 189 | int off; |
| 190 | void *cmdarg; |
| 191 | struct ip6ctlparam *ip6cp = NULL; |
| 192 | const struct sockaddr_in6 *sa6_src = NULL; |
| 193 | void (*notify)(struct in6pcb *, int) = udp6_notify; |
| 194 | struct udp_portonly { |
| 195 | u_int16_t uh_sport; |
| 196 | u_int16_t uh_dport; |
| 197 | } *uhp; |
| 198 | |
| 199 | if (sa->sa_family != AF_INET6 || |
| 200 | sa->sa_len != sizeof(struct sockaddr_in6)) |
| 201 | return NULL; |
| 202 | |
| 203 | if ((unsigned)cmd >= PRC_NCMDS) |
| 204 | return NULL; |
| 205 | if (PRC_IS_REDIRECT(cmd)) |
| 206 | notify = in6_rtchange, d = NULL; |
| 207 | else if (cmd == PRC_HOSTDEAD) |
| 208 | d = NULL; |
| 209 | else if (cmd == PRC_MSGSIZE) { |
| 210 | /* special code is present, see below */ |
| 211 | notify = in6_rtchange; |
| 212 | } |
| 213 | else if (inet6ctlerrmap[cmd] == 0) |
| 214 | return NULL; |
| 215 | |
| 216 | /* if the parameter is from icmp6, decode it. */ |
| 217 | if (d != NULL) { |
| 218 | ip6cp = (struct ip6ctlparam *)d; |
| 219 | m = ip6cp->ip6c_m; |
| 220 | ip6 = ip6cp->ip6c_ip6; |
| 221 | off = ip6cp->ip6c_off; |
| 222 | cmdarg = ip6cp->ip6c_cmdarg; |
| 223 | sa6_src = ip6cp->ip6c_src; |
| 224 | } else { |
| 225 | m = NULL; |
| 226 | ip6 = NULL; |
| 227 | cmdarg = NULL; |
| 228 | sa6_src = &sa6_any; |
| 229 | off = 0; |
| 230 | } |
| 231 | |
| 232 | if (ip6) { |
| 233 | /* |
| 234 | * XXX: We assume that when IPV6 is non NULL, |
| 235 | * M and OFF are valid. |
| 236 | */ |
| 237 | |
| 238 | /* check if we can safely examine src and dst ports */ |
| 239 | if (m->m_pkthdr.len < off + sizeof(*uhp)) { |
| 240 | if (cmd == PRC_MSGSIZE) |
| 241 | icmp6_mtudisc_update((struct ip6ctlparam *)d, 0); |
| 242 | return NULL; |
| 243 | } |
| 244 | |
| 245 | memset(&uh, 0, sizeof(uh)); |
| 246 | m_copydata(m, off, sizeof(*uhp), (void *)&uh); |
| 247 | |
| 248 | if (cmd == PRC_MSGSIZE) { |
| 249 | int valid = 0; |
| 250 | |
| 251 | /* |
| 252 | * Check to see if we have a valid UDP socket |
| 253 | * corresponding to the address in the ICMPv6 message |
| 254 | * payload. |
| 255 | */ |
| 256 | if (in6_pcblookup_connect(&udbtable, &sa6->sin6_addr, |
| 257 | uh.uh_dport, (const struct in6_addr *)&sa6_src->sin6_addr, |
| 258 | uh.uh_sport, 0, 0)) |
| 259 | valid++; |
| 260 | #if 0 |
| 261 | /* |
| 262 | * As the use of sendto(2) is fairly popular, |
| 263 | * we may want to allow non-connected pcb too. |
| 264 | * But it could be too weak against attacks... |
| 265 | * We should at least check if the local address (= s) |
| 266 | * is really ours. |
| 267 | */ |
| 268 | else if (in6_pcblookup_bind(&udbtable, &sa6->sin6_addr, |
| 269 | uh.uh_dport, 0)) |
| 270 | valid++; |
| 271 | #endif |
| 272 | |
| 273 | /* |
| 274 | * Depending on the value of "valid" and routing table |
| 275 | * size (mtudisc_{hi,lo}wat), we will: |
| 276 | * - recalculate the new MTU and create the |
| 277 | * corresponding routing entry, or |
| 278 | * - ignore the MTU change notification. |
| 279 | */ |
| 280 | icmp6_mtudisc_update((struct ip6ctlparam *)d, valid); |
| 281 | |
| 282 | /* |
| 283 | * regardless of if we called |
| 284 | * icmp6_mtudisc_update(), we need to call |
| 285 | * in6_pcbnotify(), to notify path MTU change |
| 286 | * to the userland (RFC3542), because some |
| 287 | * unconnected sockets may share the same |
| 288 | * destination and want to know the path MTU. |
| 289 | */ |
| 290 | } |
| 291 | |
| 292 | (void) in6_pcbnotify(&udbtable, sa, uh.uh_dport, |
| 293 | sin6tocsa(sa6_src), uh.uh_sport, cmd, cmdarg, |
| 294 | notify); |
| 295 | } else { |
| 296 | (void) in6_pcbnotify(&udbtable, sa, 0, |
| 297 | sin6tocsa(sa6_src), 0, cmd, cmdarg, notify); |
| 298 | } |
| 299 | return NULL; |
| 300 | } |
| 301 | |
| 302 | int |
| 303 | udp6_ctloutput(int op, struct socket *so, struct sockopt *sopt) |
| 304 | { |
| 305 | int s; |
| 306 | int error = 0; |
| 307 | int family; |
| 308 | |
| 309 | family = so->so_proto->pr_domain->dom_family; |
| 310 | |
| 311 | s = splsoftnet(); |
| 312 | switch (family) { |
| 313 | #ifdef INET |
| 314 | case PF_INET: |
| 315 | if (sopt->sopt_level != IPPROTO_UDP) { |
| 316 | error = ip_ctloutput(op, so, sopt); |
| 317 | goto end; |
| 318 | } |
| 319 | break; |
| 320 | #endif |
| 321 | #ifdef INET6 |
| 322 | case PF_INET6: |
| 323 | if (sopt->sopt_level != IPPROTO_UDP) { |
| 324 | error = ip6_ctloutput(op, so, sopt); |
| 325 | goto end; |
| 326 | } |
| 327 | break; |
| 328 | #endif |
| 329 | default: |
| 330 | error = EAFNOSUPPORT; |
| 331 | goto end; |
| 332 | } |
| 333 | error = EINVAL; |
| 334 | |
| 335 | end: |
| 336 | splx(s); |
| 337 | return error; |
| 338 | } |
| 339 | |
| 340 | static void |
| 341 | udp6_sendup(struct mbuf *m, int off /* offset of data portion */, |
| 342 | struct sockaddr *src, struct socket *so) |
| 343 | { |
| 344 | struct mbuf *opts = NULL; |
| 345 | struct mbuf *n; |
| 346 | struct in6pcb *in6p = NULL; |
| 347 | |
| 348 | if (!so) |
| 349 | return; |
| 350 | if (so->so_proto->pr_domain->dom_family != AF_INET6) |
| 351 | return; |
| 352 | in6p = sotoin6pcb(so); |
| 353 | |
| 354 | #if defined(IPSEC) |
| 355 | /* check AH/ESP integrity. */ |
| 356 | if (ipsec_used && so != NULL && ipsec6_in_reject_so(m, so)) { |
| 357 | IPSEC6_STATINC(IPSEC_STAT_IN_POLVIO); |
| 358 | if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) |
| 359 | icmp6_error(n, ICMP6_DST_UNREACH, |
| 360 | ICMP6_DST_UNREACH_ADMIN, 0); |
| 361 | return; |
| 362 | } |
| 363 | #endif /*IPSEC*/ |
| 364 | |
| 365 | if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { |
| 366 | if (in6p && (in6p->in6p_flags & IN6P_CONTROLOPTS |
| 367 | #ifdef SO_OTIMESTAMP |
| 368 | || in6p->in6p_socket->so_options & SO_OTIMESTAMP |
| 369 | #endif |
| 370 | || in6p->in6p_socket->so_options & SO_TIMESTAMP)) { |
| 371 | struct ip6_hdr *ip6 = mtod(n, struct ip6_hdr *); |
| 372 | ip6_savecontrol(in6p, &opts, ip6, n); |
| 373 | } |
| 374 | |
| 375 | m_adj(n, off); |
| 376 | if (sbappendaddr(&so->so_rcv, src, n, opts) == 0) { |
| 377 | m_freem(n); |
| 378 | if (opts) |
| 379 | m_freem(opts); |
| 380 | so->so_rcv.sb_overflowed++; |
| 381 | UDP6_STATINC(UDP6_STAT_FULLSOCK); |
| 382 | } else |
| 383 | sorwakeup(so); |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | int |
| 388 | udp6_realinput(int af, struct sockaddr_in6 *src, struct sockaddr_in6 *dst, |
| 389 | struct mbuf *m, int off) |
| 390 | { |
| 391 | u_int16_t sport, dport; |
| 392 | int rcvcnt; |
| 393 | struct in6_addr src6, *dst6; |
| 394 | const struct in_addr *dst4; |
| 395 | struct inpcb_hdr *inph; |
| 396 | struct in6pcb *in6p; |
| 397 | |
| 398 | rcvcnt = 0; |
| 399 | off += sizeof(struct udphdr); /* now, offset of payload */ |
| 400 | |
| 401 | if (af != AF_INET && af != AF_INET6) |
| 402 | goto bad; |
| 403 | if (src->sin6_family != AF_INET6 || dst->sin6_family != AF_INET6) |
| 404 | goto bad; |
| 405 | |
| 406 | src6 = src->sin6_addr; |
| 407 | if (sa6_recoverscope(src) != 0) { |
| 408 | /* XXX: should be impossible. */ |
| 409 | goto bad; |
| 410 | } |
| 411 | sport = src->sin6_port; |
| 412 | |
| 413 | dport = dst->sin6_port; |
| 414 | dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr[12]; |
| 415 | dst6 = &dst->sin6_addr; |
| 416 | |
| 417 | if (IN6_IS_ADDR_MULTICAST(dst6) || |
| 418 | (af == AF_INET && IN_MULTICAST(dst4->s_addr))) { |
| 419 | /* |
| 420 | * Deliver a multicast or broadcast datagram to *all* sockets |
| 421 | * for which the local and remote addresses and ports match |
| 422 | * those of the incoming datagram. This allows more than |
| 423 | * one process to receive multi/broadcasts on the same port. |
| 424 | * (This really ought to be done for unicast datagrams as |
| 425 | * well, but that would cause problems with existing |
| 426 | * applications that open both address-specific sockets and |
| 427 | * a wildcard socket listening to the same port -- they would |
| 428 | * end up receiving duplicates of every unicast datagram. |
| 429 | * Those applications open the multiple sockets to overcome an |
| 430 | * inadequacy of the UDP socket interface, but for backwards |
| 431 | * compatibility we avoid the problem here rather than |
| 432 | * fixing the interface. Maybe 4.5BSD will remedy this?) |
| 433 | */ |
| 434 | |
| 435 | /* |
| 436 | * KAME note: traditionally we dropped udpiphdr from mbuf here. |
| 437 | * we need udpiphdr for IPsec processing so we do that later. |
| 438 | */ |
| 439 | /* |
| 440 | * Locate pcb(s) for datagram. |
| 441 | */ |
| 442 | TAILQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) { |
| 443 | in6p = (struct in6pcb *)inph; |
| 444 | if (in6p->in6p_af != AF_INET6) |
| 445 | continue; |
| 446 | |
| 447 | if (in6p->in6p_lport != dport) |
| 448 | continue; |
| 449 | if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) { |
| 450 | if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, |
| 451 | dst6)) |
| 452 | continue; |
| 453 | } else { |
| 454 | if (IN6_IS_ADDR_V4MAPPED(dst6) && |
| 455 | (in6p->in6p_flags & IN6P_IPV6_V6ONLY)) |
| 456 | continue; |
| 457 | } |
| 458 | if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { |
| 459 | if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, |
| 460 | &src6) || in6p->in6p_fport != sport) |
| 461 | continue; |
| 462 | } else { |
| 463 | if (IN6_IS_ADDR_V4MAPPED(&src6) && |
| 464 | (in6p->in6p_flags & IN6P_IPV6_V6ONLY)) |
| 465 | continue; |
| 466 | } |
| 467 | |
| 468 | udp6_sendup(m, off, sin6tosa(src), in6p->in6p_socket); |
| 469 | rcvcnt++; |
| 470 | |
| 471 | /* |
| 472 | * Don't look for additional matches if this one does |
| 473 | * not have either the SO_REUSEPORT or SO_REUSEADDR |
| 474 | * socket options set. This heuristic avoids searching |
| 475 | * through all pcbs in the common case of a non-shared |
| 476 | * port. It assumes that an application will never |
| 477 | * clear these options after setting them. |
| 478 | */ |
| 479 | if ((in6p->in6p_socket->so_options & |
| 480 | (SO_REUSEPORT|SO_REUSEADDR)) == 0) |
| 481 | break; |
| 482 | } |
| 483 | } else { |
| 484 | /* |
| 485 | * Locate pcb for datagram. |
| 486 | */ |
| 487 | in6p = in6_pcblookup_connect(&udbtable, &src6, sport, dst6, |
| 488 | dport, 0, 0); |
| 489 | if (in6p == 0) { |
| 490 | UDP_STATINC(UDP_STAT_PCBHASHMISS); |
| 491 | in6p = in6_pcblookup_bind(&udbtable, dst6, dport, 0); |
| 492 | if (in6p == 0) |
| 493 | return rcvcnt; |
| 494 | } |
| 495 | |
| 496 | udp6_sendup(m, off, sin6tosa(src), in6p->in6p_socket); |
| 497 | rcvcnt++; |
| 498 | } |
| 499 | |
| 500 | bad: |
| 501 | return rcvcnt; |
| 502 | } |
| 503 | |
| 504 | int |
| 505 | udp6_input_checksum(struct mbuf *m, const struct udphdr *uh, int off, int len) |
| 506 | { |
| 507 | |
| 508 | /* |
| 509 | * XXX it's better to record and check if this mbuf is |
| 510 | * already checked. |
| 511 | */ |
| 512 | |
| 513 | if (__predict_false((m->m_flags & M_LOOP) && !udp_do_loopback_cksum)) { |
| 514 | goto good; |
| 515 | } |
| 516 | if (uh->uh_sum == 0) { |
| 517 | UDP6_STATINC(UDP6_STAT_NOSUM); |
| 518 | goto bad; |
| 519 | } |
| 520 | |
| 521 | switch (m->m_pkthdr.csum_flags & |
| 522 | ((m_get_rcvif_NOMPSAFE(m)->if_csum_flags_rx & M_CSUM_UDPv6) | |
| 523 | M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { |
| 524 | case M_CSUM_UDPv6|M_CSUM_TCP_UDP_BAD: |
| 525 | UDP_CSUM_COUNTER_INCR(&udp6_hwcsum_bad); |
| 526 | UDP6_STATINC(UDP6_STAT_BADSUM); |
| 527 | goto bad; |
| 528 | |
| 529 | #if 0 /* notyet */ |
| 530 | case M_CSUM_UDPv6|M_CSUM_DATA: |
| 531 | #endif |
| 532 | |
| 533 | case M_CSUM_UDPv6: |
| 534 | /* Checksum was okay. */ |
| 535 | UDP_CSUM_COUNTER_INCR(&udp6_hwcsum_ok); |
| 536 | break; |
| 537 | |
| 538 | default: |
| 539 | /* |
| 540 | * Need to compute it ourselves. Maybe skip checksum |
| 541 | * on loopback interfaces. |
| 542 | */ |
| 543 | UDP_CSUM_COUNTER_INCR(&udp6_swcsum); |
| 544 | if (in6_cksum(m, IPPROTO_UDP, off, len) != 0) { |
| 545 | UDP6_STATINC(UDP6_STAT_BADSUM); |
| 546 | goto bad; |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | good: |
| 551 | return 0; |
| 552 | bad: |
| 553 | return -1; |
| 554 | } |
| 555 | |
| 556 | int |
| 557 | udp6_input(struct mbuf **mp, int *offp, int proto) |
| 558 | { |
| 559 | struct mbuf *m = *mp; |
| 560 | int off = *offp; |
| 561 | struct sockaddr_in6 src, dst; |
| 562 | struct ip6_hdr *ip6; |
| 563 | struct udphdr *uh; |
| 564 | u_int32_t plen, ulen; |
| 565 | |
| 566 | ip6 = mtod(m, struct ip6_hdr *); |
| 567 | |
| 568 | #if defined(NFAITH) && 0 < NFAITH |
| 569 | if (faithprefix(&ip6->ip6_dst)) { |
| 570 | /* send icmp6 host unreach? */ |
| 571 | m_freem(m); |
| 572 | return IPPROTO_DONE; |
| 573 | } |
| 574 | #endif |
| 575 | |
| 576 | UDP6_STATINC(UDP6_STAT_IPACKETS); |
| 577 | |
| 578 | /* check for jumbogram is done in ip6_input. we can trust pkthdr.len */ |
| 579 | plen = m->m_pkthdr.len - off; |
| 580 | IP6_EXTHDR_GET(uh, struct udphdr *, m, off, sizeof(struct udphdr)); |
| 581 | if (uh == NULL) { |
| 582 | IP6_STATINC(IP6_STAT_TOOSHORT); |
| 583 | return IPPROTO_DONE; |
| 584 | } |
| 585 | /* |
| 586 | * Enforce alignment requirements that are violated in |
| 587 | * some cases, see kern/50766 for details. |
| 588 | */ |
| 589 | if (UDP_HDR_ALIGNED_P(uh) == 0) { |
| 590 | m = m_copyup(m, off + sizeof(struct udphdr), 0); |
| 591 | if (m == NULL) { |
| 592 | IP6_STATINC(IP6_STAT_TOOSHORT); |
| 593 | return IPPROTO_DONE; |
| 594 | } |
| 595 | ip6 = mtod(m, struct ip6_hdr *); |
| 596 | uh = (struct udphdr *)(mtod(m, char *) + off); |
| 597 | } |
| 598 | KASSERT(UDP_HDR_ALIGNED_P(uh)); |
| 599 | ulen = ntohs((u_short)uh->uh_ulen); |
| 600 | /* |
| 601 | * RFC2675 section 4: jumbograms will have 0 in the UDP header field, |
| 602 | * iff payload length > 0xffff. |
| 603 | */ |
| 604 | if (ulen == 0 && plen > 0xffff) |
| 605 | ulen = plen; |
| 606 | |
| 607 | if (plen != ulen) { |
| 608 | UDP6_STATINC(UDP6_STAT_BADLEN); |
| 609 | goto bad; |
| 610 | } |
| 611 | |
| 612 | /* destination port of 0 is illegal, based on RFC768. */ |
| 613 | if (uh->uh_dport == 0) |
| 614 | goto bad; |
| 615 | |
| 616 | /* Be proactive about malicious use of IPv4 mapped address */ |
| 617 | if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) || |
| 618 | IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) { |
| 619 | /* XXX stat */ |
| 620 | goto bad; |
| 621 | } |
| 622 | |
| 623 | /* |
| 624 | * Checksum extended UDP header and data. Maybe skip checksum |
| 625 | * on loopback interfaces. |
| 626 | */ |
| 627 | if (udp6_input_checksum(m, uh, off, ulen)) |
| 628 | goto bad; |
| 629 | |
| 630 | /* |
| 631 | * Construct source and dst sockaddrs. |
| 632 | */ |
| 633 | memset(&src, 0, sizeof(src)); |
| 634 | src.sin6_family = AF_INET6; |
| 635 | src.sin6_len = sizeof(struct sockaddr_in6); |
| 636 | src.sin6_addr = ip6->ip6_src; |
| 637 | src.sin6_port = uh->uh_sport; |
| 638 | memset(&dst, 0, sizeof(dst)); |
| 639 | dst.sin6_family = AF_INET6; |
| 640 | dst.sin6_len = sizeof(struct sockaddr_in6); |
| 641 | dst.sin6_addr = ip6->ip6_dst; |
| 642 | dst.sin6_port = uh->uh_dport; |
| 643 | |
| 644 | if (udp6_realinput(AF_INET6, &src, &dst, m, off) == 0) { |
| 645 | if (m->m_flags & M_MCAST) { |
| 646 | UDP6_STATINC(UDP6_STAT_NOPORTMCAST); |
| 647 | goto bad; |
| 648 | } |
| 649 | UDP6_STATINC(UDP6_STAT_NOPORT); |
| 650 | icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0); |
| 651 | m = NULL; |
| 652 | } |
| 653 | |
| 654 | bad: |
| 655 | if (m) |
| 656 | m_freem(m); |
| 657 | return IPPROTO_DONE; |
| 658 | } |
| 659 | |
| 660 | static int |
| 661 | udp6_attach(struct socket *so, int proto) |
| 662 | { |
| 663 | struct in6pcb *in6p; |
| 664 | int s, error; |
| 665 | |
| 666 | KASSERT(sotoin6pcb(so) == NULL); |
| 667 | sosetlock(so); |
| 668 | |
| 669 | /* |
| 670 | * MAPPED_ADDR implementation spec: |
| 671 | * Always attach for IPv6, and only when necessary for IPv4. |
| 672 | */ |
| 673 | s = splsoftnet(); |
| 674 | error = in6_pcballoc(so, &udbtable); |
| 675 | splx(s); |
| 676 | if (error) { |
| 677 | return error; |
| 678 | } |
| 679 | error = soreserve(so, udp6_sendspace, udp6_recvspace); |
| 680 | if (error) { |
| 681 | return error; |
| 682 | } |
| 683 | in6p = sotoin6pcb(so); |
| 684 | in6p->in6p_cksum = -1; /* just to be sure */ |
| 685 | |
| 686 | KASSERT(solocked(so)); |
| 687 | return 0; |
| 688 | } |
| 689 | |
| 690 | static void |
| 691 | udp6_detach(struct socket *so) |
| 692 | { |
| 693 | struct in6pcb *in6p = sotoin6pcb(so); |
| 694 | int s; |
| 695 | |
| 696 | KASSERT(solocked(so)); |
| 697 | KASSERT(in6p != NULL); |
| 698 | |
| 699 | s = splsoftnet(); |
| 700 | in6_pcbdetach(in6p); |
| 701 | splx(s); |
| 702 | } |
| 703 | |
| 704 | static int |
| 705 | udp6_accept(struct socket *so, struct sockaddr *nam) |
| 706 | { |
| 707 | KASSERT(solocked(so)); |
| 708 | |
| 709 | return EOPNOTSUPP; |
| 710 | } |
| 711 | |
| 712 | static int |
| 713 | udp6_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) |
| 714 | { |
| 715 | struct in6pcb *in6p = sotoin6pcb(so); |
| 716 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; |
| 717 | int error = 0; |
| 718 | int s; |
| 719 | |
| 720 | KASSERT(solocked(so)); |
| 721 | KASSERT(in6p != NULL); |
| 722 | |
| 723 | s = splsoftnet(); |
| 724 | error = in6_pcbbind(in6p, sin6, l); |
| 725 | splx(s); |
| 726 | return error; |
| 727 | } |
| 728 | |
| 729 | static int |
| 730 | udp6_listen(struct socket *so, struct lwp *l) |
| 731 | { |
| 732 | KASSERT(solocked(so)); |
| 733 | |
| 734 | return EOPNOTSUPP; |
| 735 | } |
| 736 | |
| 737 | static int |
| 738 | udp6_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) |
| 739 | { |
| 740 | struct in6pcb *in6p = sotoin6pcb(so); |
| 741 | int error = 0; |
| 742 | int s; |
| 743 | |
| 744 | KASSERT(solocked(so)); |
| 745 | KASSERT(in6p != NULL); |
| 746 | |
| 747 | if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) |
| 748 | return EISCONN; |
| 749 | s = splsoftnet(); |
| 750 | error = in6_pcbconnect(in6p, (struct sockaddr_in6 *)nam, l); |
| 751 | splx(s); |
| 752 | if (error == 0) |
| 753 | soisconnected(so); |
| 754 | |
| 755 | return error; |
| 756 | } |
| 757 | |
| 758 | static int |
| 759 | udp6_connect2(struct socket *so, struct socket *so2) |
| 760 | { |
| 761 | KASSERT(solocked(so)); |
| 762 | |
| 763 | return EOPNOTSUPP; |
| 764 | } |
| 765 | |
| 766 | static int |
| 767 | udp6_disconnect(struct socket *so) |
| 768 | { |
| 769 | struct in6pcb *in6p = sotoin6pcb(so); |
| 770 | int s; |
| 771 | |
| 772 | KASSERT(solocked(so)); |
| 773 | KASSERT(in6p != NULL); |
| 774 | |
| 775 | if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) |
| 776 | return ENOTCONN; |
| 777 | |
| 778 | s = splsoftnet(); |
| 779 | in6_pcbdisconnect(in6p); |
| 780 | memset((void *)&in6p->in6p_laddr, 0, sizeof(in6p->in6p_laddr)); |
| 781 | splx(s); |
| 782 | |
| 783 | so->so_state &= ~SS_ISCONNECTED; /* XXX */ |
| 784 | in6_pcbstate(in6p, IN6P_BOUND); /* XXX */ |
| 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | static int |
| 789 | udp6_shutdown(struct socket *so) |
| 790 | { |
| 791 | int s; |
| 792 | |
| 793 | s = splsoftnet(); |
| 794 | socantsendmore(so); |
| 795 | splx(s); |
| 796 | |
| 797 | return 0; |
| 798 | } |
| 799 | |
| 800 | static int |
| 801 | udp6_abort(struct socket *so) |
| 802 | { |
| 803 | int s; |
| 804 | |
| 805 | KASSERT(solocked(so)); |
| 806 | KASSERT(sotoin6pcb(so) != NULL); |
| 807 | |
| 808 | s = splsoftnet(); |
| 809 | soisdisconnected(so); |
| 810 | in6_pcbdetach(sotoin6pcb(so)); |
| 811 | splx(s); |
| 812 | |
| 813 | return 0; |
| 814 | } |
| 815 | |
| 816 | static int |
| 817 | udp6_ioctl(struct socket *so, u_long cmd, void *addr6, struct ifnet *ifp) |
| 818 | { |
| 819 | /* |
| 820 | * MAPPED_ADDR implementation info: |
| 821 | * Mapped addr support for PRU_CONTROL is not necessary. |
| 822 | * Because typical user of PRU_CONTROL is such as ifconfig, |
| 823 | * and they don't associate any addr to their socket. Then |
| 824 | * socket family is only hint about the PRU_CONTROL'ed address |
| 825 | * family, especially when getting addrs from kernel. |
| 826 | * So AF_INET socket need to be used to control AF_INET addrs, |
| 827 | * and AF_INET6 socket for AF_INET6 addrs. |
| 828 | */ |
| 829 | return in6_control(so, cmd, addr6, ifp); |
| 830 | } |
| 831 | |
| 832 | static int |
| 833 | udp6_stat(struct socket *so, struct stat *ub) |
| 834 | { |
| 835 | KASSERT(solocked(so)); |
| 836 | |
| 837 | /* stat: don't bother with a blocksize */ |
| 838 | return 0; |
| 839 | } |
| 840 | |
| 841 | static int |
| 842 | udp6_peeraddr(struct socket *so, struct sockaddr *nam) |
| 843 | { |
| 844 | KASSERT(solocked(so)); |
| 845 | KASSERT(sotoin6pcb(so) != NULL); |
| 846 | KASSERT(nam != NULL); |
| 847 | |
| 848 | in6_setpeeraddr(sotoin6pcb(so), (struct sockaddr_in6 *)nam); |
| 849 | return 0; |
| 850 | } |
| 851 | |
| 852 | static int |
| 853 | udp6_sockaddr(struct socket *so, struct sockaddr *nam) |
| 854 | { |
| 855 | KASSERT(solocked(so)); |
| 856 | KASSERT(sotoin6pcb(so) != NULL); |
| 857 | KASSERT(nam != NULL); |
| 858 | |
| 859 | in6_setsockaddr(sotoin6pcb(so), (struct sockaddr_in6 *)nam); |
| 860 | return 0; |
| 861 | } |
| 862 | |
| 863 | static int |
| 864 | udp6_rcvd(struct socket *so, int flags, struct lwp *l) |
| 865 | { |
| 866 | KASSERT(solocked(so)); |
| 867 | |
| 868 | return EOPNOTSUPP; |
| 869 | } |
| 870 | |
| 871 | static int |
| 872 | udp6_recvoob(struct socket *so, struct mbuf *m, int flags) |
| 873 | { |
| 874 | KASSERT(solocked(so)); |
| 875 | |
| 876 | return EOPNOTSUPP; |
| 877 | } |
| 878 | |
| 879 | static int |
| 880 | udp6_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, |
| 881 | struct mbuf *control, struct lwp *l) |
| 882 | { |
| 883 | struct in6pcb *in6p = sotoin6pcb(so); |
| 884 | int error = 0; |
| 885 | int s; |
| 886 | |
| 887 | KASSERT(solocked(so)); |
| 888 | KASSERT(in6p != NULL); |
| 889 | KASSERT(m != NULL); |
| 890 | |
| 891 | s = splsoftnet(); |
| 892 | error = udp6_output(in6p, m, (struct sockaddr_in6 *)nam, control, l); |
| 893 | splx(s); |
| 894 | |
| 895 | return error; |
| 896 | } |
| 897 | |
| 898 | static int |
| 899 | udp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) |
| 900 | { |
| 901 | KASSERT(solocked(so)); |
| 902 | |
| 903 | if (m) |
| 904 | m_freem(m); |
| 905 | if (control) |
| 906 | m_freem(control); |
| 907 | |
| 908 | return EOPNOTSUPP; |
| 909 | } |
| 910 | |
| 911 | static int |
| 912 | udp6_purgeif(struct socket *so, struct ifnet *ifp) |
| 913 | { |
| 914 | |
| 915 | #ifndef NET_MPSAFE |
| 916 | mutex_enter(softnet_lock); |
| 917 | #endif |
| 918 | in6_pcbpurgeif0(&udbtable, ifp); |
| 919 | in6_purgeif(ifp); |
| 920 | in6_pcbpurgeif(&udbtable, ifp); |
| 921 | #ifndef NET_MPSAFE |
| 922 | mutex_exit(softnet_lock); |
| 923 | #endif |
| 924 | |
| 925 | return 0; |
| 926 | } |
| 927 | |
| 928 | static int |
| 929 | sysctl_net_inet6_udp6_stats(SYSCTLFN_ARGS) |
| 930 | { |
| 931 | |
| 932 | return (NETSTAT_SYSCTL(udp6stat_percpu, UDP6_NSTATS)); |
| 933 | } |
| 934 | |
| 935 | static void |
| 936 | sysctl_net_inet6_udp6_setup(struct sysctllog **clog) |
| 937 | { |
| 938 | |
| 939 | sysctl_createv(clog, 0, NULL, NULL, |
| 940 | CTLFLAG_PERMANENT, |
| 941 | CTLTYPE_NODE, "inet6" , NULL, |
| 942 | NULL, 0, NULL, 0, |
| 943 | CTL_NET, PF_INET6, CTL_EOL); |
| 944 | sysctl_createv(clog, 0, NULL, NULL, |
| 945 | CTLFLAG_PERMANENT, |
| 946 | CTLTYPE_NODE, "udp6" , |
| 947 | SYSCTL_DESCR("UDPv6 related settings" ), |
| 948 | NULL, 0, NULL, 0, |
| 949 | CTL_NET, PF_INET6, IPPROTO_UDP, CTL_EOL); |
| 950 | |
| 951 | sysctl_createv(clog, 0, NULL, NULL, |
| 952 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 953 | CTLTYPE_INT, "sendspace" , |
| 954 | SYSCTL_DESCR("Default UDP send buffer size" ), |
| 955 | NULL, 0, &udp6_sendspace, 0, |
| 956 | CTL_NET, PF_INET6, IPPROTO_UDP, UDP6CTL_SENDSPACE, |
| 957 | CTL_EOL); |
| 958 | sysctl_createv(clog, 0, NULL, NULL, |
| 959 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 960 | CTLTYPE_INT, "recvspace" , |
| 961 | SYSCTL_DESCR("Default UDP receive buffer size" ), |
| 962 | NULL, 0, &udp6_recvspace, 0, |
| 963 | CTL_NET, PF_INET6, IPPROTO_UDP, UDP6CTL_RECVSPACE, |
| 964 | CTL_EOL); |
| 965 | sysctl_createv(clog, 0, NULL, NULL, |
| 966 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 967 | CTLTYPE_INT, "do_loopback_cksum" , |
| 968 | SYSCTL_DESCR("Perform UDP checksum on loopback" ), |
| 969 | NULL, 0, &udp_do_loopback_cksum, 0, |
| 970 | CTL_NET, PF_INET6, IPPROTO_UDP, UDP6CTL_LOOPBACKCKSUM, |
| 971 | CTL_EOL); |
| 972 | sysctl_createv(clog, 0, NULL, NULL, |
| 973 | CTLFLAG_PERMANENT, |
| 974 | CTLTYPE_STRUCT, "pcblist" , |
| 975 | SYSCTL_DESCR("UDP protocol control block list" ), |
| 976 | sysctl_inpcblist, 0, &udbtable, 0, |
| 977 | CTL_NET, PF_INET6, IPPROTO_UDP, CTL_CREATE, |
| 978 | CTL_EOL); |
| 979 | sysctl_createv(clog, 0, NULL, NULL, |
| 980 | CTLFLAG_PERMANENT, |
| 981 | CTLTYPE_STRUCT, "stats" , |
| 982 | SYSCTL_DESCR("UDPv6 statistics" ), |
| 983 | sysctl_net_inet6_udp6_stats, 0, NULL, 0, |
| 984 | CTL_NET, PF_INET6, IPPROTO_UDP, UDP6CTL_STATS, |
| 985 | CTL_EOL); |
| 986 | } |
| 987 | |
| 988 | void |
| 989 | udp6_statinc(u_int stat) |
| 990 | { |
| 991 | |
| 992 | KASSERT(stat < UDP6_NSTATS); |
| 993 | UDP6_STATINC(stat); |
| 994 | } |
| 995 | |
| 996 | PR_WRAP_USRREQS(udp6) |
| 997 | #define udp6_attach udp6_attach_wrapper |
| 998 | #define udp6_detach udp6_detach_wrapper |
| 999 | #define udp6_accept udp6_accept_wrapper |
| 1000 | #define udp6_bind udp6_bind_wrapper |
| 1001 | #define udp6_listen udp6_listen_wrapper |
| 1002 | #define udp6_connect udp6_connect_wrapper |
| 1003 | #define udp6_connect2 udp6_connect2_wrapper |
| 1004 | #define udp6_disconnect udp6_disconnect_wrapper |
| 1005 | #define udp6_shutdown udp6_shutdown_wrapper |
| 1006 | #define udp6_abort udp6_abort_wrapper |
| 1007 | #define udp6_ioctl udp6_ioctl_wrapper |
| 1008 | #define udp6_stat udp6_stat_wrapper |
| 1009 | #define udp6_peeraddr udp6_peeraddr_wrapper |
| 1010 | #define udp6_sockaddr udp6_sockaddr_wrapper |
| 1011 | #define udp6_rcvd udp6_rcvd_wrapper |
| 1012 | #define udp6_recvoob udp6_recvoob_wrapper |
| 1013 | #define udp6_send udp6_send_wrapper |
| 1014 | #define udp6_sendoob udp6_sendoob_wrapper |
| 1015 | #define udp6_purgeif udp6_purgeif_wrapper |
| 1016 | |
| 1017 | const struct pr_usrreqs udp6_usrreqs = { |
| 1018 | .pr_attach = udp6_attach, |
| 1019 | .pr_detach = udp6_detach, |
| 1020 | .pr_accept = udp6_accept, |
| 1021 | .pr_bind = udp6_bind, |
| 1022 | .pr_listen = udp6_listen, |
| 1023 | .pr_connect = udp6_connect, |
| 1024 | .pr_connect2 = udp6_connect2, |
| 1025 | .pr_disconnect = udp6_disconnect, |
| 1026 | .pr_shutdown = udp6_shutdown, |
| 1027 | .pr_abort = udp6_abort, |
| 1028 | .pr_ioctl = udp6_ioctl, |
| 1029 | .pr_stat = udp6_stat, |
| 1030 | .pr_peeraddr = udp6_peeraddr, |
| 1031 | .pr_sockaddr = udp6_sockaddr, |
| 1032 | .pr_rcvd = udp6_rcvd, |
| 1033 | .pr_recvoob = udp6_recvoob, |
| 1034 | .pr_send = udp6_send, |
| 1035 | .pr_sendoob = udp6_sendoob, |
| 1036 | .pr_purgeif = udp6_purgeif, |
| 1037 | }; |
| 1038 | |