| 1 | /* |
| 2 | * common UDP/RAW code |
| 3 | * Linux INET6 implementation |
| 4 | * |
| 5 | * Authors: |
| 6 | * Pedro Roque <roque@di.fc.ul.pt> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * as published by the Free Software Foundation; either version |
| 11 | * 2 of the License, or (at your option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/capability.h> |
| 15 | #include <linux/errno.h> |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/socket.h> |
| 20 | #include <linux/sockios.h> |
| 21 | #include <linux/in6.h> |
| 22 | #include <linux/ipv6.h> |
| 23 | #include <linux/route.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/export.h> |
| 26 | |
| 27 | #include <net/ipv6.h> |
| 28 | #include <net/ndisc.h> |
| 29 | #include <net/addrconf.h> |
| 30 | #include <net/transp_v6.h> |
| 31 | #include <net/ip6_route.h> |
| 32 | #include <net/tcp_states.h> |
| 33 | #include <net/dsfield.h> |
| 34 | |
| 35 | #include <linux/errqueue.h> |
| 36 | #include <linux/uaccess.h> |
| 37 | |
| 38 | static bool ipv6_mapped_addr_any(const struct in6_addr *a) |
| 39 | { |
| 40 | return ipv6_addr_v4mapped(a) && (a->s6_addr32[3] == 0); |
| 41 | } |
| 42 | |
| 43 | static void ip6_datagram_flow_key_init(struct flowi6 *fl6, struct sock *sk) |
| 44 | { |
| 45 | struct inet_sock *inet = inet_sk(sk); |
| 46 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 47 | |
| 48 | memset(fl6, 0, sizeof(*fl6)); |
| 49 | fl6->flowi6_proto = sk->sk_protocol; |
| 50 | fl6->daddr = sk->sk_v6_daddr; |
| 51 | fl6->saddr = np->saddr; |
| 52 | fl6->flowi6_oif = sk->sk_bound_dev_if; |
| 53 | fl6->flowi6_mark = sk->sk_mark; |
| 54 | fl6->fl6_dport = inet->inet_dport; |
| 55 | fl6->fl6_sport = inet->inet_sport; |
| 56 | fl6->flowlabel = np->flow_label; |
| 57 | fl6->flowi6_uid = sk->sk_uid; |
| 58 | |
| 59 | if (!fl6->flowi6_oif) |
| 60 | fl6->flowi6_oif = np->sticky_pktinfo.ipi6_ifindex; |
| 61 | |
| 62 | if (!fl6->flowi6_oif && ipv6_addr_is_multicast(&fl6->daddr)) |
| 63 | fl6->flowi6_oif = np->mcast_oif; |
| 64 | |
| 65 | security_sk_classify_flow(sk, flowi6_to_flowi(fl6)); |
| 66 | } |
| 67 | |
| 68 | int ip6_datagram_dst_update(struct sock *sk, bool fix_sk_saddr) |
| 69 | { |
| 70 | struct ip6_flowlabel *flowlabel = NULL; |
| 71 | struct in6_addr *final_p, final; |
| 72 | struct ipv6_txoptions *opt; |
| 73 | struct dst_entry *dst; |
| 74 | struct inet_sock *inet = inet_sk(sk); |
| 75 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 76 | struct flowi6 fl6; |
| 77 | int err = 0; |
| 78 | |
| 79 | if (np->sndflow && (np->flow_label & IPV6_FLOWLABEL_MASK)) { |
| 80 | flowlabel = fl6_sock_lookup(sk, np->flow_label); |
| 81 | if (!flowlabel) |
| 82 | return -EINVAL; |
| 83 | } |
| 84 | ip6_datagram_flow_key_init(&fl6, sk); |
| 85 | |
| 86 | rcu_read_lock(); |
| 87 | opt = flowlabel ? flowlabel->opt : rcu_dereference(np->opt); |
| 88 | final_p = fl6_update_dst(&fl6, opt, &final); |
| 89 | rcu_read_unlock(); |
| 90 | |
| 91 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p); |
| 92 | if (IS_ERR(dst)) { |
| 93 | err = PTR_ERR(dst); |
| 94 | goto out; |
| 95 | } |
| 96 | |
| 97 | if (fix_sk_saddr) { |
| 98 | if (ipv6_addr_any(&np->saddr)) |
| 99 | np->saddr = fl6.saddr; |
| 100 | |
| 101 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) { |
| 102 | sk->sk_v6_rcv_saddr = fl6.saddr; |
| 103 | inet->inet_rcv_saddr = LOOPBACK4_IPV6; |
| 104 | if (sk->sk_prot->rehash) |
| 105 | sk->sk_prot->rehash(sk); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | ip6_dst_store(sk, dst, |
| 110 | ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr) ? |
| 111 | &sk->sk_v6_daddr : NULL, |
| 112 | #ifdef CONFIG_IPV6_SUBTREES |
| 113 | ipv6_addr_equal(&fl6.saddr, &np->saddr) ? |
| 114 | &np->saddr : |
| 115 | #endif |
| 116 | NULL); |
| 117 | |
| 118 | out: |
| 119 | fl6_sock_release(flowlabel); |
| 120 | return err; |
| 121 | } |
| 122 | |
| 123 | void ip6_datagram_release_cb(struct sock *sk) |
| 124 | { |
| 125 | struct dst_entry *dst; |
| 126 | |
| 127 | if (ipv6_addr_v4mapped(&sk->sk_v6_daddr)) |
| 128 | return; |
| 129 | |
| 130 | rcu_read_lock(); |
| 131 | dst = __sk_dst_get(sk); |
| 132 | if (!dst || !dst->obsolete || |
| 133 | dst->ops->check(dst, inet6_sk(sk)->dst_cookie)) { |
| 134 | rcu_read_unlock(); |
| 135 | return; |
| 136 | } |
| 137 | rcu_read_unlock(); |
| 138 | |
| 139 | ip6_datagram_dst_update(sk, false); |
| 140 | } |
| 141 | EXPORT_SYMBOL_GPL(ip6_datagram_release_cb); |
| 142 | |
| 143 | int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, |
| 144 | int addr_len) |
| 145 | { |
| 146 | struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr; |
| 147 | struct inet_sock *inet = inet_sk(sk); |
| 148 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 149 | struct in6_addr *daddr, old_daddr; |
| 150 | __be32 fl6_flowlabel = 0; |
| 151 | __be32 old_fl6_flowlabel; |
| 152 | __be16 old_dport; |
| 153 | int addr_type; |
| 154 | int err; |
| 155 | |
| 156 | if (usin->sin6_family == AF_INET) { |
| 157 | if (__ipv6_only_sock(sk)) |
| 158 | return -EAFNOSUPPORT; |
| 159 | err = __ip4_datagram_connect(sk, uaddr, addr_len); |
| 160 | goto ipv4_connected; |
| 161 | } |
| 162 | |
| 163 | if (addr_len < SIN6_LEN_RFC2133) |
| 164 | return -EINVAL; |
| 165 | |
| 166 | if (usin->sin6_family != AF_INET6) |
| 167 | return -EAFNOSUPPORT; |
| 168 | |
| 169 | if (np->sndflow) |
| 170 | fl6_flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK; |
| 171 | |
| 172 | if (ipv6_addr_any(&usin->sin6_addr)) { |
| 173 | /* |
| 174 | * connect to self |
| 175 | */ |
| 176 | if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr)) |
| 177 | ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK), |
| 178 | &usin->sin6_addr); |
| 179 | else |
| 180 | usin->sin6_addr = in6addr_loopback; |
| 181 | } |
| 182 | |
| 183 | addr_type = ipv6_addr_type(&usin->sin6_addr); |
| 184 | |
| 185 | daddr = &usin->sin6_addr; |
| 186 | |
| 187 | if (addr_type & IPV6_ADDR_MAPPED) { |
| 188 | struct sockaddr_in sin; |
| 189 | |
| 190 | if (__ipv6_only_sock(sk)) { |
| 191 | err = -ENETUNREACH; |
| 192 | goto out; |
| 193 | } |
| 194 | sin.sin_family = AF_INET; |
| 195 | sin.sin_addr.s_addr = daddr->s6_addr32[3]; |
| 196 | sin.sin_port = usin->sin6_port; |
| 197 | |
| 198 | err = __ip4_datagram_connect(sk, |
| 199 | (struct sockaddr *) &sin, |
| 200 | sizeof(sin)); |
| 201 | |
| 202 | ipv4_connected: |
| 203 | if (err) |
| 204 | goto out; |
| 205 | |
| 206 | ipv6_addr_set_v4mapped(inet->inet_daddr, &sk->sk_v6_daddr); |
| 207 | |
| 208 | if (ipv6_addr_any(&np->saddr) || |
| 209 | ipv6_mapped_addr_any(&np->saddr)) |
| 210 | ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr); |
| 211 | |
| 212 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr) || |
| 213 | ipv6_mapped_addr_any(&sk->sk_v6_rcv_saddr)) { |
| 214 | ipv6_addr_set_v4mapped(inet->inet_rcv_saddr, |
| 215 | &sk->sk_v6_rcv_saddr); |
| 216 | if (sk->sk_prot->rehash) |
| 217 | sk->sk_prot->rehash(sk); |
| 218 | } |
| 219 | |
| 220 | goto out; |
| 221 | } |
| 222 | |
| 223 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
| 224 | if (addr_len >= sizeof(struct sockaddr_in6) && |
| 225 | usin->sin6_scope_id) { |
| 226 | if (sk->sk_bound_dev_if && |
| 227 | sk->sk_bound_dev_if != usin->sin6_scope_id) { |
| 228 | err = -EINVAL; |
| 229 | goto out; |
| 230 | } |
| 231 | sk->sk_bound_dev_if = usin->sin6_scope_id; |
| 232 | } |
| 233 | |
| 234 | if (!sk->sk_bound_dev_if && (addr_type & IPV6_ADDR_MULTICAST)) |
| 235 | sk->sk_bound_dev_if = np->mcast_oif; |
| 236 | |
| 237 | /* Connect to link-local address requires an interface */ |
| 238 | if (!sk->sk_bound_dev_if) { |
| 239 | err = -EINVAL; |
| 240 | goto out; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | /* save the current peer information before updating it */ |
| 245 | old_daddr = sk->sk_v6_daddr; |
| 246 | old_fl6_flowlabel = np->flow_label; |
| 247 | old_dport = inet->inet_dport; |
| 248 | |
| 249 | sk->sk_v6_daddr = *daddr; |
| 250 | np->flow_label = fl6_flowlabel; |
| 251 | inet->inet_dport = usin->sin6_port; |
| 252 | |
| 253 | /* |
| 254 | * Check for a route to destination an obtain the |
| 255 | * destination cache for it. |
| 256 | */ |
| 257 | |
| 258 | err = ip6_datagram_dst_update(sk, true); |
| 259 | if (err) { |
| 260 | /* Restore the socket peer info, to keep it consistent with |
| 261 | * the old socket state |
| 262 | */ |
| 263 | sk->sk_v6_daddr = old_daddr; |
| 264 | np->flow_label = old_fl6_flowlabel; |
| 265 | inet->inet_dport = old_dport; |
| 266 | goto out; |
| 267 | } |
| 268 | |
| 269 | sk->sk_state = TCP_ESTABLISHED; |
| 270 | sk_set_txhash(sk); |
| 271 | out: |
| 272 | return err; |
| 273 | } |
| 274 | EXPORT_SYMBOL_GPL(__ip6_datagram_connect); |
| 275 | |
| 276 | int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) |
| 277 | { |
| 278 | int res; |
| 279 | |
| 280 | lock_sock(sk); |
| 281 | res = __ip6_datagram_connect(sk, uaddr, addr_len); |
| 282 | release_sock(sk); |
| 283 | return res; |
| 284 | } |
| 285 | EXPORT_SYMBOL_GPL(ip6_datagram_connect); |
| 286 | |
| 287 | int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *uaddr, |
| 288 | int addr_len) |
| 289 | { |
| 290 | DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, uaddr); |
| 291 | if (sin6->sin6_family != AF_INET6) |
| 292 | return -EAFNOSUPPORT; |
| 293 | return ip6_datagram_connect(sk, uaddr, addr_len); |
| 294 | } |
| 295 | EXPORT_SYMBOL_GPL(ip6_datagram_connect_v6_only); |
| 296 | |
| 297 | void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, |
| 298 | __be16 port, u32 info, u8 *payload) |
| 299 | { |
| 300 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 301 | struct icmp6hdr *icmph = icmp6_hdr(skb); |
| 302 | struct sock_exterr_skb *serr; |
| 303 | |
| 304 | if (!np->recverr) |
| 305 | return; |
| 306 | |
| 307 | skb = skb_clone(skb, GFP_ATOMIC); |
| 308 | if (!skb) |
| 309 | return; |
| 310 | |
| 311 | skb->protocol = htons(ETH_P_IPV6); |
| 312 | |
| 313 | serr = SKB_EXT_ERR(skb); |
| 314 | serr->ee.ee_errno = err; |
| 315 | serr->ee.ee_origin = SO_EE_ORIGIN_ICMP6; |
| 316 | serr->ee.ee_type = icmph->icmp6_type; |
| 317 | serr->ee.ee_code = icmph->icmp6_code; |
| 318 | serr->ee.ee_pad = 0; |
| 319 | serr->ee.ee_info = info; |
| 320 | serr->ee.ee_data = 0; |
| 321 | serr->addr_offset = (u8 *)&(((struct ipv6hdr *)(icmph + 1))->daddr) - |
| 322 | skb_network_header(skb); |
| 323 | serr->port = port; |
| 324 | |
| 325 | __skb_pull(skb, payload - skb->data); |
| 326 | skb_reset_transport_header(skb); |
| 327 | |
| 328 | if (sock_queue_err_skb(sk, skb)) |
| 329 | kfree_skb(skb); |
| 330 | } |
| 331 | |
| 332 | void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info) |
| 333 | { |
| 334 | const struct ipv6_pinfo *np = inet6_sk(sk); |
| 335 | struct sock_exterr_skb *serr; |
| 336 | struct ipv6hdr *iph; |
| 337 | struct sk_buff *skb; |
| 338 | |
| 339 | if (!np->recverr) |
| 340 | return; |
| 341 | |
| 342 | skb = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC); |
| 343 | if (!skb) |
| 344 | return; |
| 345 | |
| 346 | skb->protocol = htons(ETH_P_IPV6); |
| 347 | |
| 348 | skb_put(skb, sizeof(struct ipv6hdr)); |
| 349 | skb_reset_network_header(skb); |
| 350 | iph = ipv6_hdr(skb); |
| 351 | iph->daddr = fl6->daddr; |
| 352 | ip6_flow_hdr(iph, 0, 0); |
| 353 | |
| 354 | serr = SKB_EXT_ERR(skb); |
| 355 | serr->ee.ee_errno = err; |
| 356 | serr->ee.ee_origin = SO_EE_ORIGIN_LOCAL; |
| 357 | serr->ee.ee_type = 0; |
| 358 | serr->ee.ee_code = 0; |
| 359 | serr->ee.ee_pad = 0; |
| 360 | serr->ee.ee_info = info; |
| 361 | serr->ee.ee_data = 0; |
| 362 | serr->addr_offset = (u8 *)&iph->daddr - skb_network_header(skb); |
| 363 | serr->port = fl6->fl6_dport; |
| 364 | |
| 365 | __skb_pull(skb, skb_tail_pointer(skb) - skb->data); |
| 366 | skb_reset_transport_header(skb); |
| 367 | |
| 368 | if (sock_queue_err_skb(sk, skb)) |
| 369 | kfree_skb(skb); |
| 370 | } |
| 371 | |
| 372 | void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu) |
| 373 | { |
| 374 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 375 | struct ipv6hdr *iph; |
| 376 | struct sk_buff *skb; |
| 377 | struct ip6_mtuinfo *mtu_info; |
| 378 | |
| 379 | if (!np->rxopt.bits.rxpmtu) |
| 380 | return; |
| 381 | |
| 382 | skb = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC); |
| 383 | if (!skb) |
| 384 | return; |
| 385 | |
| 386 | skb_put(skb, sizeof(struct ipv6hdr)); |
| 387 | skb_reset_network_header(skb); |
| 388 | iph = ipv6_hdr(skb); |
| 389 | iph->daddr = fl6->daddr; |
| 390 | |
| 391 | mtu_info = IP6CBMTU(skb); |
| 392 | |
| 393 | mtu_info->ip6m_mtu = mtu; |
| 394 | mtu_info->ip6m_addr.sin6_family = AF_INET6; |
| 395 | mtu_info->ip6m_addr.sin6_port = 0; |
| 396 | mtu_info->ip6m_addr.sin6_flowinfo = 0; |
| 397 | mtu_info->ip6m_addr.sin6_scope_id = fl6->flowi6_oif; |
| 398 | mtu_info->ip6m_addr.sin6_addr = ipv6_hdr(skb)->daddr; |
| 399 | |
| 400 | __skb_pull(skb, skb_tail_pointer(skb) - skb->data); |
| 401 | skb_reset_transport_header(skb); |
| 402 | |
| 403 | skb = xchg(&np->rxpmtu, skb); |
| 404 | kfree_skb(skb); |
| 405 | } |
| 406 | |
| 407 | /* For some errors we have valid addr_offset even with zero payload and |
| 408 | * zero port. Also, addr_offset should be supported if port is set. |
| 409 | */ |
| 410 | static inline bool ipv6_datagram_support_addr(struct sock_exterr_skb *serr) |
| 411 | { |
| 412 | return serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6 || |
| 413 | serr->ee.ee_origin == SO_EE_ORIGIN_ICMP || |
| 414 | serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL || serr->port; |
| 415 | } |
| 416 | |
| 417 | /* IPv6 supports cmsg on all origins aside from SO_EE_ORIGIN_LOCAL. |
| 418 | * |
| 419 | * At one point, excluding local errors was a quick test to identify icmp/icmp6 |
| 420 | * errors. This is no longer true, but the test remained, so the v6 stack, |
| 421 | * unlike v4, also honors cmsg requests on all wifi and timestamp errors. |
| 422 | */ |
| 423 | static bool ip6_datagram_support_cmsg(struct sk_buff *skb, |
| 424 | struct sock_exterr_skb *serr) |
| 425 | { |
| 426 | if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP || |
| 427 | serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) |
| 428 | return true; |
| 429 | |
| 430 | if (serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL) |
| 431 | return false; |
| 432 | |
| 433 | if (!IP6CB(skb)->iif) |
| 434 | return false; |
| 435 | |
| 436 | return true; |
| 437 | } |
| 438 | |
| 439 | /* |
| 440 | * Handle MSG_ERRQUEUE |
| 441 | */ |
| 442 | int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) |
| 443 | { |
| 444 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 445 | struct sock_exterr_skb *serr; |
| 446 | struct sk_buff *skb; |
| 447 | DECLARE_SOCKADDR(struct sockaddr_in6 *, sin, msg->msg_name); |
| 448 | struct { |
| 449 | struct sock_extended_err ee; |
| 450 | struct sockaddr_in6 offender; |
| 451 | } errhdr; |
| 452 | int err; |
| 453 | int copied; |
| 454 | |
| 455 | err = -EAGAIN; |
| 456 | skb = sock_dequeue_err_skb(sk); |
| 457 | if (!skb) |
| 458 | goto out; |
| 459 | |
| 460 | copied = skb->len; |
| 461 | if (copied > len) { |
| 462 | msg->msg_flags |= MSG_TRUNC; |
| 463 | copied = len; |
| 464 | } |
| 465 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
| 466 | if (unlikely(err)) { |
| 467 | kfree_skb(skb); |
| 468 | return err; |
| 469 | } |
| 470 | sock_recv_timestamp(msg, sk, skb); |
| 471 | |
| 472 | serr = SKB_EXT_ERR(skb); |
| 473 | |
| 474 | if (sin && ipv6_datagram_support_addr(serr)) { |
| 475 | const unsigned char *nh = skb_network_header(skb); |
| 476 | sin->sin6_family = AF_INET6; |
| 477 | sin->sin6_flowinfo = 0; |
| 478 | sin->sin6_port = serr->port; |
| 479 | if (skb->protocol == htons(ETH_P_IPV6)) { |
| 480 | const struct ipv6hdr *ip6h = container_of((struct in6_addr *)(nh + serr->addr_offset), |
| 481 | struct ipv6hdr, daddr); |
| 482 | sin->sin6_addr = ip6h->daddr; |
| 483 | if (np->sndflow) |
| 484 | sin->sin6_flowinfo = ip6_flowinfo(ip6h); |
| 485 | sin->sin6_scope_id = |
| 486 | ipv6_iface_scope_id(&sin->sin6_addr, |
| 487 | IP6CB(skb)->iif); |
| 488 | } else { |
| 489 | ipv6_addr_set_v4mapped(*(__be32 *)(nh + serr->addr_offset), |
| 490 | &sin->sin6_addr); |
| 491 | sin->sin6_scope_id = 0; |
| 492 | } |
| 493 | *addr_len = sizeof(*sin); |
| 494 | } |
| 495 | |
| 496 | memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err)); |
| 497 | sin = &errhdr.offender; |
| 498 | memset(sin, 0, sizeof(*sin)); |
| 499 | |
| 500 | if (ip6_datagram_support_cmsg(skb, serr)) { |
| 501 | sin->sin6_family = AF_INET6; |
| 502 | if (np->rxopt.all) |
| 503 | ip6_datagram_recv_common_ctl(sk, msg, skb); |
| 504 | if (skb->protocol == htons(ETH_P_IPV6)) { |
| 505 | sin->sin6_addr = ipv6_hdr(skb)->saddr; |
| 506 | if (np->rxopt.all) |
| 507 | ip6_datagram_recv_specific_ctl(sk, msg, skb); |
| 508 | sin->sin6_scope_id = |
| 509 | ipv6_iface_scope_id(&sin->sin6_addr, |
| 510 | IP6CB(skb)->iif); |
| 511 | } else { |
| 512 | ipv6_addr_set_v4mapped(ip_hdr(skb)->saddr, |
| 513 | &sin->sin6_addr); |
| 514 | if (inet_sk(sk)->cmsg_flags) |
| 515 | ip_cmsg_recv(msg, skb); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | put_cmsg(msg, SOL_IPV6, IPV6_RECVERR, sizeof(errhdr), &errhdr); |
| 520 | |
| 521 | /* Now we could try to dump offended packet options */ |
| 522 | |
| 523 | msg->msg_flags |= MSG_ERRQUEUE; |
| 524 | err = copied; |
| 525 | |
| 526 | consume_skb(skb); |
| 527 | out: |
| 528 | return err; |
| 529 | } |
| 530 | EXPORT_SYMBOL_GPL(ipv6_recv_error); |
| 531 | |
| 532 | /* |
| 533 | * Handle IPV6_RECVPATHMTU |
| 534 | */ |
| 535 | int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len, |
| 536 | int *addr_len) |
| 537 | { |
| 538 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 539 | struct sk_buff *skb; |
| 540 | struct ip6_mtuinfo mtu_info; |
| 541 | DECLARE_SOCKADDR(struct sockaddr_in6 *, sin, msg->msg_name); |
| 542 | int err; |
| 543 | int copied; |
| 544 | |
| 545 | err = -EAGAIN; |
| 546 | skb = xchg(&np->rxpmtu, NULL); |
| 547 | if (!skb) |
| 548 | goto out; |
| 549 | |
| 550 | copied = skb->len; |
| 551 | if (copied > len) { |
| 552 | msg->msg_flags |= MSG_TRUNC; |
| 553 | copied = len; |
| 554 | } |
| 555 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
| 556 | if (err) |
| 557 | goto out_free_skb; |
| 558 | |
| 559 | sock_recv_timestamp(msg, sk, skb); |
| 560 | |
| 561 | memcpy(&mtu_info, IP6CBMTU(skb), sizeof(mtu_info)); |
| 562 | |
| 563 | if (sin) { |
| 564 | sin->sin6_family = AF_INET6; |
| 565 | sin->sin6_flowinfo = 0; |
| 566 | sin->sin6_port = 0; |
| 567 | sin->sin6_scope_id = mtu_info.ip6m_addr.sin6_scope_id; |
| 568 | sin->sin6_addr = mtu_info.ip6m_addr.sin6_addr; |
| 569 | *addr_len = sizeof(*sin); |
| 570 | } |
| 571 | |
| 572 | put_cmsg(msg, SOL_IPV6, IPV6_PATHMTU, sizeof(mtu_info), &mtu_info); |
| 573 | |
| 574 | err = copied; |
| 575 | |
| 576 | out_free_skb: |
| 577 | kfree_skb(skb); |
| 578 | out: |
| 579 | return err; |
| 580 | } |
| 581 | |
| 582 | |
| 583 | void ip6_datagram_recv_common_ctl(struct sock *sk, struct msghdr *msg, |
| 584 | struct sk_buff *skb) |
| 585 | { |
| 586 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 587 | bool is_ipv6 = skb->protocol == htons(ETH_P_IPV6); |
| 588 | |
| 589 | if (np->rxopt.bits.rxinfo) { |
| 590 | struct in6_pktinfo src_info; |
| 591 | |
| 592 | if (is_ipv6) { |
| 593 | src_info.ipi6_ifindex = IP6CB(skb)->iif; |
| 594 | src_info.ipi6_addr = ipv6_hdr(skb)->daddr; |
| 595 | } else { |
| 596 | src_info.ipi6_ifindex = |
| 597 | PKTINFO_SKB_CB(skb)->ipi_ifindex; |
| 598 | ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr, |
| 599 | &src_info.ipi6_addr); |
| 600 | } |
| 601 | |
| 602 | if (src_info.ipi6_ifindex >= 0) |
| 603 | put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, |
| 604 | sizeof(src_info), &src_info); |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg, |
| 609 | struct sk_buff *skb) |
| 610 | { |
| 611 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 612 | struct inet6_skb_parm *opt = IP6CB(skb); |
| 613 | unsigned char *nh = skb_network_header(skb); |
| 614 | |
| 615 | if (np->rxopt.bits.rxhlim) { |
| 616 | int hlim = ipv6_hdr(skb)->hop_limit; |
| 617 | put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim); |
| 618 | } |
| 619 | |
| 620 | if (np->rxopt.bits.rxtclass) { |
| 621 | int tclass = ipv6_get_dsfield(ipv6_hdr(skb)); |
| 622 | put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass); |
| 623 | } |
| 624 | |
| 625 | if (np->rxopt.bits.rxflow) { |
| 626 | __be32 flowinfo = ip6_flowinfo((struct ipv6hdr *)nh); |
| 627 | if (flowinfo) |
| 628 | put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo); |
| 629 | } |
| 630 | |
| 631 | /* HbH is allowed only once */ |
| 632 | if (np->rxopt.bits.hopopts && (opt->flags & IP6SKB_HOPBYHOP)) { |
| 633 | u8 *ptr = nh + sizeof(struct ipv6hdr); |
| 634 | put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr); |
| 635 | } |
| 636 | |
| 637 | if (opt->lastopt && |
| 638 | (np->rxopt.bits.dstopts || np->rxopt.bits.srcrt)) { |
| 639 | /* |
| 640 | * Silly enough, but we need to reparse in order to |
| 641 | * report extension headers (except for HbH) |
| 642 | * in order. |
| 643 | * |
| 644 | * Also note that IPV6_RECVRTHDRDSTOPTS is NOT |
| 645 | * (and WILL NOT be) defined because |
| 646 | * IPV6_RECVDSTOPTS is more generic. --yoshfuji |
| 647 | */ |
| 648 | unsigned int off = sizeof(struct ipv6hdr); |
| 649 | u8 nexthdr = ipv6_hdr(skb)->nexthdr; |
| 650 | |
| 651 | while (off <= opt->lastopt) { |
| 652 | unsigned int len; |
| 653 | u8 *ptr = nh + off; |
| 654 | |
| 655 | switch (nexthdr) { |
| 656 | case IPPROTO_DSTOPTS: |
| 657 | nexthdr = ptr[0]; |
| 658 | len = (ptr[1] + 1) << 3; |
| 659 | if (np->rxopt.bits.dstopts) |
| 660 | put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, len, ptr); |
| 661 | break; |
| 662 | case IPPROTO_ROUTING: |
| 663 | nexthdr = ptr[0]; |
| 664 | len = (ptr[1] + 1) << 3; |
| 665 | if (np->rxopt.bits.srcrt) |
| 666 | put_cmsg(msg, SOL_IPV6, IPV6_RTHDR, len, ptr); |
| 667 | break; |
| 668 | case IPPROTO_AH: |
| 669 | nexthdr = ptr[0]; |
| 670 | len = (ptr[1] + 2) << 2; |
| 671 | break; |
| 672 | default: |
| 673 | nexthdr = ptr[0]; |
| 674 | len = (ptr[1] + 1) << 3; |
| 675 | break; |
| 676 | } |
| 677 | |
| 678 | off += len; |
| 679 | } |
| 680 | } |
| 681 | |
| 682 | /* socket options in old style */ |
| 683 | if (np->rxopt.bits.rxoinfo) { |
| 684 | struct in6_pktinfo src_info; |
| 685 | |
| 686 | src_info.ipi6_ifindex = opt->iif; |
| 687 | src_info.ipi6_addr = ipv6_hdr(skb)->daddr; |
| 688 | put_cmsg(msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info); |
| 689 | } |
| 690 | if (np->rxopt.bits.rxohlim) { |
| 691 | int hlim = ipv6_hdr(skb)->hop_limit; |
| 692 | put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim); |
| 693 | } |
| 694 | if (np->rxopt.bits.ohopopts && (opt->flags & IP6SKB_HOPBYHOP)) { |
| 695 | u8 *ptr = nh + sizeof(struct ipv6hdr); |
| 696 | put_cmsg(msg, SOL_IPV6, IPV6_2292HOPOPTS, (ptr[1]+1)<<3, ptr); |
| 697 | } |
| 698 | if (np->rxopt.bits.odstopts && opt->dst0) { |
| 699 | u8 *ptr = nh + opt->dst0; |
| 700 | put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); |
| 701 | } |
| 702 | if (np->rxopt.bits.osrcrt && opt->srcrt) { |
| 703 | struct ipv6_rt_hdr *rthdr = (struct ipv6_rt_hdr *)(nh + opt->srcrt); |
| 704 | put_cmsg(msg, SOL_IPV6, IPV6_2292RTHDR, (rthdr->hdrlen+1) << 3, rthdr); |
| 705 | } |
| 706 | if (np->rxopt.bits.odstopts && opt->dst1) { |
| 707 | u8 *ptr = nh + opt->dst1; |
| 708 | put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); |
| 709 | } |
| 710 | if (np->rxopt.bits.rxorigdstaddr) { |
| 711 | struct sockaddr_in6 sin6; |
| 712 | __be16 _ports[2], *ports; |
| 713 | |
| 714 | ports = skb_header_pointer(skb, skb_transport_offset(skb), |
| 715 | sizeof(_ports), &_ports); |
| 716 | if (ports) { |
| 717 | /* All current transport protocols have the port numbers in the |
| 718 | * first four bytes of the transport header and this function is |
| 719 | * written with this assumption in mind. |
| 720 | */ |
| 721 | sin6.sin6_family = AF_INET6; |
| 722 | sin6.sin6_addr = ipv6_hdr(skb)->daddr; |
| 723 | sin6.sin6_port = ports[1]; |
| 724 | sin6.sin6_flowinfo = 0; |
| 725 | sin6.sin6_scope_id = |
| 726 | ipv6_iface_scope_id(&ipv6_hdr(skb)->daddr, |
| 727 | opt->iif); |
| 728 | |
| 729 | put_cmsg(msg, SOL_IPV6, IPV6_ORIGDSTADDR, sizeof(sin6), &sin6); |
| 730 | } |
| 731 | } |
| 732 | if (np->rxopt.bits.recvfragsize && opt->frag_max_size) { |
| 733 | int val = opt->frag_max_size; |
| 734 | |
| 735 | put_cmsg(msg, SOL_IPV6, IPV6_RECVFRAGSIZE, sizeof(val), &val); |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | void ip6_datagram_recv_ctl(struct sock *sk, struct msghdr *msg, |
| 740 | struct sk_buff *skb) |
| 741 | { |
| 742 | ip6_datagram_recv_common_ctl(sk, msg, skb); |
| 743 | ip6_datagram_recv_specific_ctl(sk, msg, skb); |
| 744 | } |
| 745 | EXPORT_SYMBOL_GPL(ip6_datagram_recv_ctl); |
| 746 | |
| 747 | int ip6_datagram_send_ctl(struct net *net, struct sock *sk, |
| 748 | struct msghdr *msg, struct flowi6 *fl6, |
| 749 | struct ipcm6_cookie *ipc6, struct sockcm_cookie *sockc) |
| 750 | { |
| 751 | struct in6_pktinfo *src_info; |
| 752 | struct cmsghdr *cmsg; |
| 753 | struct ipv6_rt_hdr *rthdr; |
| 754 | struct ipv6_opt_hdr *hdr; |
| 755 | struct ipv6_txoptions *opt = ipc6->opt; |
| 756 | int len; |
| 757 | int err = 0; |
| 758 | |
| 759 | for_each_cmsghdr(cmsg, msg) { |
| 760 | int addr_type; |
| 761 | |
| 762 | if (!CMSG_OK(msg, cmsg)) { |
| 763 | err = -EINVAL; |
| 764 | goto exit_f; |
| 765 | } |
| 766 | |
| 767 | if (cmsg->cmsg_level == SOL_SOCKET) { |
| 768 | err = __sock_cmsg_send(sk, msg, cmsg, sockc); |
| 769 | if (err) |
| 770 | return err; |
| 771 | continue; |
| 772 | } |
| 773 | |
| 774 | if (cmsg->cmsg_level != SOL_IPV6) |
| 775 | continue; |
| 776 | |
| 777 | switch (cmsg->cmsg_type) { |
| 778 | case IPV6_PKTINFO: |
| 779 | case IPV6_2292PKTINFO: |
| 780 | { |
| 781 | struct net_device *dev = NULL; |
| 782 | |
| 783 | if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) { |
| 784 | err = -EINVAL; |
| 785 | goto exit_f; |
| 786 | } |
| 787 | |
| 788 | src_info = (struct in6_pktinfo *)CMSG_DATA(cmsg); |
| 789 | |
| 790 | if (src_info->ipi6_ifindex) { |
| 791 | if (fl6->flowi6_oif && |
| 792 | src_info->ipi6_ifindex != fl6->flowi6_oif) |
| 793 | return -EINVAL; |
| 794 | fl6->flowi6_oif = src_info->ipi6_ifindex; |
| 795 | } |
| 796 | |
| 797 | addr_type = __ipv6_addr_type(&src_info->ipi6_addr); |
| 798 | |
| 799 | rcu_read_lock(); |
| 800 | if (fl6->flowi6_oif) { |
| 801 | dev = dev_get_by_index_rcu(net, fl6->flowi6_oif); |
| 802 | if (!dev) { |
| 803 | rcu_read_unlock(); |
| 804 | return -ENODEV; |
| 805 | } |
| 806 | } else if (addr_type & IPV6_ADDR_LINKLOCAL) { |
| 807 | rcu_read_unlock(); |
| 808 | return -EINVAL; |
| 809 | } |
| 810 | |
| 811 | if (addr_type != IPV6_ADDR_ANY) { |
| 812 | int strict = __ipv6_addr_src_scope(addr_type) <= IPV6_ADDR_SCOPE_LINKLOCAL; |
| 813 | if (!(inet_sk(sk)->freebind || inet_sk(sk)->transparent) && |
| 814 | !ipv6_chk_addr(net, &src_info->ipi6_addr, |
| 815 | strict ? dev : NULL, 0) && |
| 816 | !ipv6_chk_acast_addr_src(net, dev, |
| 817 | &src_info->ipi6_addr)) |
| 818 | err = -EINVAL; |
| 819 | else |
| 820 | fl6->saddr = src_info->ipi6_addr; |
| 821 | } |
| 822 | |
| 823 | rcu_read_unlock(); |
| 824 | |
| 825 | if (err) |
| 826 | goto exit_f; |
| 827 | |
| 828 | break; |
| 829 | } |
| 830 | |
| 831 | case IPV6_FLOWINFO: |
| 832 | if (cmsg->cmsg_len < CMSG_LEN(4)) { |
| 833 | err = -EINVAL; |
| 834 | goto exit_f; |
| 835 | } |
| 836 | |
| 837 | if (fl6->flowlabel&IPV6_FLOWINFO_MASK) { |
| 838 | if ((fl6->flowlabel^*(__be32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) { |
| 839 | err = -EINVAL; |
| 840 | goto exit_f; |
| 841 | } |
| 842 | } |
| 843 | fl6->flowlabel = IPV6_FLOWINFO_MASK & *(__be32 *)CMSG_DATA(cmsg); |
| 844 | break; |
| 845 | |
| 846 | case IPV6_2292HOPOPTS: |
| 847 | case IPV6_HOPOPTS: |
| 848 | if (opt->hopopt || cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { |
| 849 | err = -EINVAL; |
| 850 | goto exit_f; |
| 851 | } |
| 852 | |
| 853 | hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); |
| 854 | len = ((hdr->hdrlen + 1) << 3); |
| 855 | if (cmsg->cmsg_len < CMSG_LEN(len)) { |
| 856 | err = -EINVAL; |
| 857 | goto exit_f; |
| 858 | } |
| 859 | if (!ns_capable(net->user_ns, CAP_NET_RAW)) { |
| 860 | err = -EPERM; |
| 861 | goto exit_f; |
| 862 | } |
| 863 | opt->opt_nflen += len; |
| 864 | opt->hopopt = hdr; |
| 865 | break; |
| 866 | |
| 867 | case IPV6_2292DSTOPTS: |
| 868 | if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { |
| 869 | err = -EINVAL; |
| 870 | goto exit_f; |
| 871 | } |
| 872 | |
| 873 | hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); |
| 874 | len = ((hdr->hdrlen + 1) << 3); |
| 875 | if (cmsg->cmsg_len < CMSG_LEN(len)) { |
| 876 | err = -EINVAL; |
| 877 | goto exit_f; |
| 878 | } |
| 879 | if (!ns_capable(net->user_ns, CAP_NET_RAW)) { |
| 880 | err = -EPERM; |
| 881 | goto exit_f; |
| 882 | } |
| 883 | if (opt->dst1opt) { |
| 884 | err = -EINVAL; |
| 885 | goto exit_f; |
| 886 | } |
| 887 | opt->opt_flen += len; |
| 888 | opt->dst1opt = hdr; |
| 889 | break; |
| 890 | |
| 891 | case IPV6_DSTOPTS: |
| 892 | case IPV6_RTHDRDSTOPTS: |
| 893 | if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { |
| 894 | err = -EINVAL; |
| 895 | goto exit_f; |
| 896 | } |
| 897 | |
| 898 | hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); |
| 899 | len = ((hdr->hdrlen + 1) << 3); |
| 900 | if (cmsg->cmsg_len < CMSG_LEN(len)) { |
| 901 | err = -EINVAL; |
| 902 | goto exit_f; |
| 903 | } |
| 904 | if (!ns_capable(net->user_ns, CAP_NET_RAW)) { |
| 905 | err = -EPERM; |
| 906 | goto exit_f; |
| 907 | } |
| 908 | if (cmsg->cmsg_type == IPV6_DSTOPTS) { |
| 909 | opt->opt_flen += len; |
| 910 | opt->dst1opt = hdr; |
| 911 | } else { |
| 912 | opt->opt_nflen += len; |
| 913 | opt->dst0opt = hdr; |
| 914 | } |
| 915 | break; |
| 916 | |
| 917 | case IPV6_2292RTHDR: |
| 918 | case IPV6_RTHDR: |
| 919 | if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_rt_hdr))) { |
| 920 | err = -EINVAL; |
| 921 | goto exit_f; |
| 922 | } |
| 923 | |
| 924 | rthdr = (struct ipv6_rt_hdr *)CMSG_DATA(cmsg); |
| 925 | |
| 926 | switch (rthdr->type) { |
| 927 | #if IS_ENABLED(CONFIG_IPV6_MIP6) |
| 928 | case IPV6_SRCRT_TYPE_2: |
| 929 | if (rthdr->hdrlen != 2 || |
| 930 | rthdr->segments_left != 1) { |
| 931 | err = -EINVAL; |
| 932 | goto exit_f; |
| 933 | } |
| 934 | break; |
| 935 | #endif |
| 936 | default: |
| 937 | err = -EINVAL; |
| 938 | goto exit_f; |
| 939 | } |
| 940 | |
| 941 | len = ((rthdr->hdrlen + 1) << 3); |
| 942 | |
| 943 | if (cmsg->cmsg_len < CMSG_LEN(len)) { |
| 944 | err = -EINVAL; |
| 945 | goto exit_f; |
| 946 | } |
| 947 | |
| 948 | /* segments left must also match */ |
| 949 | if ((rthdr->hdrlen >> 1) != rthdr->segments_left) { |
| 950 | err = -EINVAL; |
| 951 | goto exit_f; |
| 952 | } |
| 953 | |
| 954 | opt->opt_nflen += len; |
| 955 | opt->srcrt = rthdr; |
| 956 | |
| 957 | if (cmsg->cmsg_type == IPV6_2292RTHDR && opt->dst1opt) { |
| 958 | int dsthdrlen = ((opt->dst1opt->hdrlen+1)<<3); |
| 959 | |
| 960 | opt->opt_nflen += dsthdrlen; |
| 961 | opt->dst0opt = opt->dst1opt; |
| 962 | opt->dst1opt = NULL; |
| 963 | opt->opt_flen -= dsthdrlen; |
| 964 | } |
| 965 | |
| 966 | break; |
| 967 | |
| 968 | case IPV6_2292HOPLIMIT: |
| 969 | case IPV6_HOPLIMIT: |
| 970 | if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) { |
| 971 | err = -EINVAL; |
| 972 | goto exit_f; |
| 973 | } |
| 974 | |
| 975 | ipc6->hlimit = *(int *)CMSG_DATA(cmsg); |
| 976 | if (ipc6->hlimit < -1 || ipc6->hlimit > 0xff) { |
| 977 | err = -EINVAL; |
| 978 | goto exit_f; |
| 979 | } |
| 980 | |
| 981 | break; |
| 982 | |
| 983 | case IPV6_TCLASS: |
| 984 | { |
| 985 | int tc; |
| 986 | |
| 987 | err = -EINVAL; |
| 988 | if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) |
| 989 | goto exit_f; |
| 990 | |
| 991 | tc = *(int *)CMSG_DATA(cmsg); |
| 992 | if (tc < -1 || tc > 0xff) |
| 993 | goto exit_f; |
| 994 | |
| 995 | err = 0; |
| 996 | ipc6->tclass = tc; |
| 997 | |
| 998 | break; |
| 999 | } |
| 1000 | |
| 1001 | case IPV6_DONTFRAG: |
| 1002 | { |
| 1003 | int df; |
| 1004 | |
| 1005 | err = -EINVAL; |
| 1006 | if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) |
| 1007 | goto exit_f; |
| 1008 | |
| 1009 | df = *(int *)CMSG_DATA(cmsg); |
| 1010 | if (df < 0 || df > 1) |
| 1011 | goto exit_f; |
| 1012 | |
| 1013 | err = 0; |
| 1014 | ipc6->dontfrag = df; |
| 1015 | |
| 1016 | break; |
| 1017 | } |
| 1018 | default: |
| 1019 | net_dbg_ratelimited("invalid cmsg type: %d\n", |
| 1020 | cmsg->cmsg_type); |
| 1021 | err = -EINVAL; |
| 1022 | goto exit_f; |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | exit_f: |
| 1027 | return err; |
| 1028 | } |
| 1029 | EXPORT_SYMBOL_GPL(ip6_datagram_send_ctl); |
| 1030 | |
| 1031 | void __ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp, |
| 1032 | __u16 srcp, __u16 destp, int rqueue, int bucket) |
| 1033 | { |
| 1034 | const struct in6_addr *dest, *src; |
| 1035 | |
| 1036 | dest = &sp->sk_v6_daddr; |
| 1037 | src = &sp->sk_v6_rcv_saddr; |
| 1038 | seq_printf(seq, |
| 1039 | "%5d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X " |
| 1040 | "%02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d\n", |
| 1041 | bucket, |
| 1042 | src->s6_addr32[0], src->s6_addr32[1], |
| 1043 | src->s6_addr32[2], src->s6_addr32[3], srcp, |
| 1044 | dest->s6_addr32[0], dest->s6_addr32[1], |
| 1045 | dest->s6_addr32[2], dest->s6_addr32[3], destp, |
| 1046 | sp->sk_state, |
| 1047 | sk_wmem_alloc_get(sp), |
| 1048 | rqueue, |
| 1049 | 0, 0L, 0, |
| 1050 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), |
| 1051 | 0, |
| 1052 | sock_i_ino(sp), |
| 1053 | refcount_read(&sp->sk_refcnt), sp, |
| 1054 | atomic_read(&sp->sk_drops)); |
| 1055 | } |