Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * common UDP/RAW code | |
1ab1457c | 3 | * Linux INET6 implementation |
1da177e4 LT |
4 | * |
5 | * Authors: | |
1ab1457c | 6 | * Pedro Roque <roque@di.fc.ul.pt> |
1da177e4 | 7 | * |
1da177e4 LT |
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 | ||
4fc268d2 | 14 | #include <linux/capability.h> |
1da177e4 LT |
15 | #include <linux/errno.h> |
16 | #include <linux/types.h> | |
17 | #include <linux/kernel.h> | |
1da177e4 LT |
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> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
a495f836 | 25 | #include <linux/export.h> |
1da177e4 LT |
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> | |
c752f073 | 32 | #include <net/tcp_states.h> |
e7219858 | 33 | #include <net/dsfield.h> |
1da177e4 LT |
34 | |
35 | #include <linux/errqueue.h> | |
36 | #include <asm/uaccess.h> | |
37 | ||
a50feda5 | 38 | static bool ipv6_mapped_addr_any(const struct in6_addr *a) |
c15fea2d | 39 | { |
a50feda5 | 40 | return ipv6_addr_v4mapped(a) && (a->s6_addr32[3] == 0); |
c15fea2d MM |
41 | } |
42 | ||
1da177e4 LT |
43 | int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) |
44 | { | |
45 | struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr; | |
67ba4152 IM |
46 | struct inet_sock *inet = inet_sk(sk); |
47 | struct ipv6_pinfo *np = inet6_sk(sk); | |
48 | struct in6_addr *daddr, *final_p, final; | |
1da177e4 | 49 | struct dst_entry *dst; |
4c9483b2 | 50 | struct flowi6 fl6; |
1da177e4 | 51 | struct ip6_flowlabel *flowlabel = NULL; |
67ba4152 | 52 | struct ipv6_txoptions *opt; |
1da177e4 LT |
53 | int addr_type; |
54 | int err; | |
55 | ||
56 | if (usin->sin6_family == AF_INET) { | |
57 | if (__ipv6_only_sock(sk)) | |
58 | return -EAFNOSUPPORT; | |
59 | err = ip4_datagram_connect(sk, uaddr, addr_len); | |
60 | goto ipv4_connected; | |
61 | } | |
62 | ||
63 | if (addr_len < SIN6_LEN_RFC2133) | |
1ab1457c | 64 | return -EINVAL; |
1da177e4 | 65 | |
1ab1457c YH |
66 | if (usin->sin6_family != AF_INET6) |
67 | return -EAFNOSUPPORT; | |
1da177e4 | 68 | |
4c9483b2 | 69 | memset(&fl6, 0, sizeof(fl6)); |
1da177e4 | 70 | if (np->sndflow) { |
4c9483b2 DM |
71 | fl6.flowlabel = usin->sin6_flowinfo&IPV6_FLOWINFO_MASK; |
72 | if (fl6.flowlabel&IPV6_FLOWLABEL_MASK) { | |
73 | flowlabel = fl6_sock_lookup(sk, fl6.flowlabel); | |
63159f29 | 74 | if (!flowlabel) |
1da177e4 | 75 | return -EINVAL; |
1da177e4 LT |
76 | } |
77 | } | |
78 | ||
79 | addr_type = ipv6_addr_type(&usin->sin6_addr); | |
80 | ||
81 | if (addr_type == IPV6_ADDR_ANY) { | |
82 | /* | |
83 | * connect to self | |
84 | */ | |
85 | usin->sin6_addr.s6_addr[15] = 0x01; | |
86 | } | |
87 | ||
88 | daddr = &usin->sin6_addr; | |
89 | ||
90 | if (addr_type == IPV6_ADDR_MAPPED) { | |
91 | struct sockaddr_in sin; | |
92 | ||
93 | if (__ipv6_only_sock(sk)) { | |
94 | err = -ENETUNREACH; | |
95 | goto out; | |
96 | } | |
97 | sin.sin_family = AF_INET; | |
98 | sin.sin_addr.s_addr = daddr->s6_addr32[3]; | |
99 | sin.sin_port = usin->sin6_port; | |
100 | ||
1ab1457c | 101 | err = ip4_datagram_connect(sk, |
b5a4257c | 102 | (struct sockaddr *) &sin, |
1da177e4 LT |
103 | sizeof(sin)); |
104 | ||
105 | ipv4_connected: | |
106 | if (err) | |
107 | goto out; | |
1ab1457c | 108 | |
efe4208f | 109 | ipv6_addr_set_v4mapped(inet->inet_daddr, &sk->sk_v6_daddr); |
1da177e4 | 110 | |
c15fea2d MM |
111 | if (ipv6_addr_any(&np->saddr) || |
112 | ipv6_mapped_addr_any(&np->saddr)) | |
c720c7e8 | 113 | ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr); |
b301e82c | 114 | |
efe4208f ED |
115 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr) || |
116 | ipv6_mapped_addr_any(&sk->sk_v6_rcv_saddr)) { | |
c720c7e8 | 117 | ipv6_addr_set_v4mapped(inet->inet_rcv_saddr, |
efe4208f | 118 | &sk->sk_v6_rcv_saddr); |
719f8358 ED |
119 | if (sk->sk_prot->rehash) |
120 | sk->sk_prot->rehash(sk); | |
121 | } | |
1da177e4 | 122 | |
1da177e4 LT |
123 | goto out; |
124 | } | |
125 | ||
842df073 | 126 | if (__ipv6_addr_needs_scope_id(addr_type)) { |
1da177e4 LT |
127 | if (addr_len >= sizeof(struct sockaddr_in6) && |
128 | usin->sin6_scope_id) { | |
129 | if (sk->sk_bound_dev_if && | |
130 | sk->sk_bound_dev_if != usin->sin6_scope_id) { | |
131 | err = -EINVAL; | |
132 | goto out; | |
133 | } | |
134 | sk->sk_bound_dev_if = usin->sin6_scope_id; | |
1da177e4 LT |
135 | } |
136 | ||
1ac4f008 BH |
137 | if (!sk->sk_bound_dev_if && (addr_type & IPV6_ADDR_MULTICAST)) |
138 | sk->sk_bound_dev_if = np->mcast_oif; | |
139 | ||
1da177e4 LT |
140 | /* Connect to link-local address requires an interface */ |
141 | if (!sk->sk_bound_dev_if) { | |
142 | err = -EINVAL; | |
143 | goto out; | |
144 | } | |
145 | } | |
146 | ||
efe4208f | 147 | sk->sk_v6_daddr = *daddr; |
4c9483b2 | 148 | np->flow_label = fl6.flowlabel; |
1da177e4 | 149 | |
c720c7e8 | 150 | inet->inet_dport = usin->sin6_port; |
1da177e4 LT |
151 | |
152 | /* | |
153 | * Check for a route to destination an obtain the | |
154 | * destination cache for it. | |
155 | */ | |
156 | ||
4c9483b2 | 157 | fl6.flowi6_proto = sk->sk_protocol; |
efe4208f | 158 | fl6.daddr = sk->sk_v6_daddr; |
4e3fd7a0 | 159 | fl6.saddr = np->saddr; |
4c9483b2 DM |
160 | fl6.flowi6_oif = sk->sk_bound_dev_if; |
161 | fl6.flowi6_mark = sk->sk_mark; | |
1958b856 DM |
162 | fl6.fl6_dport = inet->inet_dport; |
163 | fl6.fl6_sport = inet->inet_sport; | |
1da177e4 | 164 | |
4c9483b2 DM |
165 | if (!fl6.flowi6_oif && (addr_type&IPV6_ADDR_MULTICAST)) |
166 | fl6.flowi6_oif = np->mcast_oif; | |
1da177e4 | 167 | |
4c9483b2 | 168 | security_sk_classify_flow(sk, flowi6_to_flowi(&fl6)); |
beb8d13b | 169 | |
20c59de2 | 170 | opt = flowlabel ? flowlabel->opt : np->opt; |
4c9483b2 | 171 | final_p = fl6_update_dst(&fl6, opt, &final); |
1da177e4 | 172 | |
0e0d44ab | 173 | dst = ip6_dst_lookup_flow(sk, &fl6, final_p); |
68d0c6d3 DM |
174 | err = 0; |
175 | if (IS_ERR(dst)) { | |
176 | err = PTR_ERR(dst); | |
1da177e4 | 177 | goto out; |
14e50e57 | 178 | } |
1da177e4 LT |
179 | |
180 | /* source address lookup done in ip6_dst_lookup */ | |
181 | ||
182 | if (ipv6_addr_any(&np->saddr)) | |
4e3fd7a0 | 183 | np->saddr = fl6.saddr; |
1da177e4 | 184 | |
efe4208f ED |
185 | if (ipv6_addr_any(&sk->sk_v6_rcv_saddr)) { |
186 | sk->sk_v6_rcv_saddr = fl6.saddr; | |
c720c7e8 | 187 | inet->inet_rcv_saddr = LOOPBACK4_IPV6; |
719f8358 ED |
188 | if (sk->sk_prot->rehash) |
189 | sk->sk_prot->rehash(sk); | |
1da177e4 LT |
190 | } |
191 | ||
192 | ip6_dst_store(sk, dst, | |
efe4208f ED |
193 | ipv6_addr_equal(&fl6.daddr, &sk->sk_v6_daddr) ? |
194 | &sk->sk_v6_daddr : NULL, | |
8e1ef0a9 | 195 | #ifdef CONFIG_IPV6_SUBTREES |
4c9483b2 | 196 | ipv6_addr_equal(&fl6.saddr, &np->saddr) ? |
8e1ef0a9 YH |
197 | &np->saddr : |
198 | #endif | |
199 | NULL); | |
1da177e4 LT |
200 | |
201 | sk->sk_state = TCP_ESTABLISHED; | |
b73c3d0e | 202 | ip6_set_txhash(sk); |
1da177e4 LT |
203 | out: |
204 | fl6_sock_release(flowlabel); | |
205 | return err; | |
206 | } | |
a495f836 | 207 | EXPORT_SYMBOL_GPL(ip6_datagram_connect); |
1da177e4 | 208 | |
82b276cd HFS |
209 | int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *uaddr, |
210 | int addr_len) | |
211 | { | |
212 | DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, uaddr); | |
213 | if (sin6->sin6_family != AF_INET6) | |
214 | return -EAFNOSUPPORT; | |
215 | return ip6_datagram_connect(sk, uaddr, addr_len); | |
216 | } | |
217 | EXPORT_SYMBOL_GPL(ip6_datagram_connect_v6_only); | |
218 | ||
1ab1457c | 219 | void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, |
e69a4adc | 220 | __be16 port, u32 info, u8 *payload) |
1da177e4 LT |
221 | { |
222 | struct ipv6_pinfo *np = inet6_sk(sk); | |
cc70ab26 | 223 | struct icmp6hdr *icmph = icmp6_hdr(skb); |
1da177e4 LT |
224 | struct sock_exterr_skb *serr; |
225 | ||
226 | if (!np->recverr) | |
227 | return; | |
228 | ||
229 | skb = skb_clone(skb, GFP_ATOMIC); | |
230 | if (!skb) | |
231 | return; | |
232 | ||
d40a4de0 BH |
233 | skb->protocol = htons(ETH_P_IPV6); |
234 | ||
1da177e4 LT |
235 | serr = SKB_EXT_ERR(skb); |
236 | serr->ee.ee_errno = err; | |
237 | serr->ee.ee_origin = SO_EE_ORIGIN_ICMP6; | |
1ab1457c | 238 | serr->ee.ee_type = icmph->icmp6_type; |
1da177e4 LT |
239 | serr->ee.ee_code = icmph->icmp6_code; |
240 | serr->ee.ee_pad = 0; | |
241 | serr->ee.ee_info = info; | |
242 | serr->ee.ee_data = 0; | |
d56f90a7 ACM |
243 | serr->addr_offset = (u8 *)&(((struct ipv6hdr *)(icmph + 1))->daddr) - |
244 | skb_network_header(skb); | |
1da177e4 LT |
245 | serr->port = port; |
246 | ||
1da177e4 | 247 | __skb_pull(skb, payload - skb->data); |
bd82393c | 248 | skb_reset_transport_header(skb); |
1da177e4 LT |
249 | |
250 | if (sock_queue_err_skb(sk, skb)) | |
251 | kfree_skb(skb); | |
252 | } | |
253 | ||
4c9483b2 | 254 | void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info) |
1da177e4 LT |
255 | { |
256 | struct ipv6_pinfo *np = inet6_sk(sk); | |
257 | struct sock_exterr_skb *serr; | |
258 | struct ipv6hdr *iph; | |
259 | struct sk_buff *skb; | |
260 | ||
261 | if (!np->recverr) | |
262 | return; | |
263 | ||
264 | skb = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC); | |
265 | if (!skb) | |
266 | return; | |
267 | ||
d40a4de0 BH |
268 | skb->protocol = htons(ETH_P_IPV6); |
269 | ||
1ced98e8 ACM |
270 | skb_put(skb, sizeof(struct ipv6hdr)); |
271 | skb_reset_network_header(skb); | |
0660e03f | 272 | iph = ipv6_hdr(skb); |
4e3fd7a0 | 273 | iph->daddr = fl6->daddr; |
1da177e4 LT |
274 | |
275 | serr = SKB_EXT_ERR(skb); | |
276 | serr->ee.ee_errno = err; | |
277 | serr->ee.ee_origin = SO_EE_ORIGIN_LOCAL; | |
1ab1457c | 278 | serr->ee.ee_type = 0; |
1da177e4 LT |
279 | serr->ee.ee_code = 0; |
280 | serr->ee.ee_pad = 0; | |
281 | serr->ee.ee_info = info; | |
282 | serr->ee.ee_data = 0; | |
d56f90a7 | 283 | serr->addr_offset = (u8 *)&iph->daddr - skb_network_header(skb); |
1958b856 | 284 | serr->port = fl6->fl6_dport; |
1da177e4 | 285 | |
27a884dc | 286 | __skb_pull(skb, skb_tail_pointer(skb) - skb->data); |
bd82393c | 287 | skb_reset_transport_header(skb); |
1da177e4 LT |
288 | |
289 | if (sock_queue_err_skb(sk, skb)) | |
290 | kfree_skb(skb); | |
291 | } | |
292 | ||
4c9483b2 | 293 | void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu) |
4b340ae2 BH |
294 | { |
295 | struct ipv6_pinfo *np = inet6_sk(sk); | |
296 | struct ipv6hdr *iph; | |
297 | struct sk_buff *skb; | |
298 | struct ip6_mtuinfo *mtu_info; | |
299 | ||
300 | if (!np->rxopt.bits.rxpmtu) | |
301 | return; | |
302 | ||
303 | skb = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC); | |
304 | if (!skb) | |
305 | return; | |
306 | ||
307 | skb_put(skb, sizeof(struct ipv6hdr)); | |
308 | skb_reset_network_header(skb); | |
309 | iph = ipv6_hdr(skb); | |
4e3fd7a0 | 310 | iph->daddr = fl6->daddr; |
4b340ae2 BH |
311 | |
312 | mtu_info = IP6CBMTU(skb); | |
4b340ae2 BH |
313 | |
314 | mtu_info->ip6m_mtu = mtu; | |
315 | mtu_info->ip6m_addr.sin6_family = AF_INET6; | |
316 | mtu_info->ip6m_addr.sin6_port = 0; | |
317 | mtu_info->ip6m_addr.sin6_flowinfo = 0; | |
4c9483b2 | 318 | mtu_info->ip6m_addr.sin6_scope_id = fl6->flowi6_oif; |
4e3fd7a0 | 319 | mtu_info->ip6m_addr.sin6_addr = ipv6_hdr(skb)->daddr; |
4b340ae2 BH |
320 | |
321 | __skb_pull(skb, skb_tail_pointer(skb) - skb->data); | |
322 | skb_reset_transport_header(skb); | |
323 | ||
324 | skb = xchg(&np->rxpmtu, skb); | |
325 | kfree_skb(skb); | |
326 | } | |
327 | ||
c247f053 WB |
328 | /* IPv6 supports cmsg on all origins aside from SO_EE_ORIGIN_LOCAL. |
329 | * | |
330 | * At one point, excluding local errors was a quick test to identify icmp/icmp6 | |
331 | * errors. This is no longer true, but the test remained, so the v6 stack, | |
332 | * unlike v4, also honors cmsg requests on all wifi and timestamp errors. | |
333 | * | |
334 | * Timestamp code paths do not initialize the fields expected by cmsg: | |
335 | * the PKTINFO fields in skb->cb[]. Fill those in here. | |
336 | */ | |
337 | static bool ip6_datagram_support_cmsg(struct sk_buff *skb, | |
338 | struct sock_exterr_skb *serr) | |
829ae9d6 | 339 | { |
c247f053 WB |
340 | if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP || |
341 | serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) | |
342 | return true; | |
343 | ||
344 | if (serr->ee.ee_origin == SO_EE_ORIGIN_LOCAL) | |
345 | return false; | |
346 | ||
347 | if (!skb->dev) | |
348 | return false; | |
829ae9d6 WB |
349 | |
350 | if (skb->protocol == htons(ETH_P_IPV6)) | |
c247f053 | 351 | IP6CB(skb)->iif = skb->dev->ifindex; |
829ae9d6 | 352 | else |
c247f053 WB |
353 | PKTINFO_SKB_CB(skb)->ipi_ifindex = skb->dev->ifindex; |
354 | ||
355 | return true; | |
829ae9d6 WB |
356 | } |
357 | ||
1ab1457c | 358 | /* |
1da177e4 LT |
359 | * Handle MSG_ERRQUEUE |
360 | */ | |
85fbaa75 | 361 | int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) |
1da177e4 LT |
362 | { |
363 | struct ipv6_pinfo *np = inet6_sk(sk); | |
364 | struct sock_exterr_skb *serr; | |
364a9e93 | 365 | struct sk_buff *skb; |
342dfc30 | 366 | DECLARE_SOCKADDR(struct sockaddr_in6 *, sin, msg->msg_name); |
1da177e4 LT |
367 | struct { |
368 | struct sock_extended_err ee; | |
369 | struct sockaddr_in6 offender; | |
370 | } errhdr; | |
371 | int err; | |
372 | int copied; | |
373 | ||
374 | err = -EAGAIN; | |
364a9e93 | 375 | skb = sock_dequeue_err_skb(sk); |
63159f29 | 376 | if (!skb) |
1da177e4 LT |
377 | goto out; |
378 | ||
379 | copied = skb->len; | |
380 | if (copied > len) { | |
381 | msg->msg_flags |= MSG_TRUNC; | |
382 | copied = len; | |
383 | } | |
51f3d02b | 384 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 LT |
385 | if (err) |
386 | goto out_free_skb; | |
387 | ||
388 | sock_recv_timestamp(msg, sk, skb); | |
389 | ||
390 | serr = SKB_EXT_ERR(skb); | |
391 | ||
c247f053 | 392 | if (sin && serr->port) { |
d56f90a7 | 393 | const unsigned char *nh = skb_network_header(skb); |
1da177e4 LT |
394 | sin->sin6_family = AF_INET6; |
395 | sin->sin6_flowinfo = 0; | |
1ab1457c | 396 | sin->sin6_port = serr->port; |
d40a4de0 | 397 | if (skb->protocol == htons(ETH_P_IPV6)) { |
6c40d100 YH |
398 | const struct ipv6hdr *ip6h = container_of((struct in6_addr *)(nh + serr->addr_offset), |
399 | struct ipv6hdr, daddr); | |
400 | sin->sin6_addr = ip6h->daddr; | |
1da177e4 | 401 | if (np->sndflow) |
6502ca52 | 402 | sin->sin6_flowinfo = ip6_flowinfo(ip6h); |
842df073 HFS |
403 | sin->sin6_scope_id = |
404 | ipv6_iface_scope_id(&sin->sin6_addr, | |
405 | IP6CB(skb)->iif); | |
1da177e4 | 406 | } else { |
b301e82c BH |
407 | ipv6_addr_set_v4mapped(*(__be32 *)(nh + serr->addr_offset), |
408 | &sin->sin6_addr); | |
842df073 | 409 | sin->sin6_scope_id = 0; |
1da177e4 | 410 | } |
85fbaa75 | 411 | *addr_len = sizeof(*sin); |
1da177e4 LT |
412 | } |
413 | ||
414 | memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err)); | |
415 | sin = &errhdr.offender; | |
f812116b | 416 | memset(sin, 0, sizeof(*sin)); |
c247f053 WB |
417 | |
418 | if (ip6_datagram_support_cmsg(skb, serr)) { | |
1da177e4 | 419 | sin->sin6_family = AF_INET6; |
c247f053 | 420 | if (np->rxopt.all) |
4b261c75 | 421 | ip6_datagram_recv_common_ctl(sk, msg, skb); |
d40a4de0 | 422 | if (skb->protocol == htons(ETH_P_IPV6)) { |
4e3fd7a0 | 423 | sin->sin6_addr = ipv6_hdr(skb)->saddr; |
1da177e4 | 424 | if (np->rxopt.all) |
4b261c75 | 425 | ip6_datagram_recv_specific_ctl(sk, msg, skb); |
842df073 HFS |
426 | sin->sin6_scope_id = |
427 | ipv6_iface_scope_id(&sin->sin6_addr, | |
428 | IP6CB(skb)->iif); | |
1da177e4 | 429 | } else { |
b301e82c BH |
430 | ipv6_addr_set_v4mapped(ip_hdr(skb)->saddr, |
431 | &sin->sin6_addr); | |
f812116b | 432 | if (inet_sk(sk)->cmsg_flags) |
1da177e4 LT |
433 | ip_cmsg_recv(msg, skb); |
434 | } | |
435 | } | |
436 | ||
437 | put_cmsg(msg, SOL_IPV6, IPV6_RECVERR, sizeof(errhdr), &errhdr); | |
438 | ||
439 | /* Now we could try to dump offended packet options */ | |
440 | ||
441 | msg->msg_flags |= MSG_ERRQUEUE; | |
442 | err = copied; | |
443 | ||
1ab1457c | 444 | out_free_skb: |
1da177e4 LT |
445 | kfree_skb(skb); |
446 | out: | |
447 | return err; | |
448 | } | |
a495f836 | 449 | EXPORT_SYMBOL_GPL(ipv6_recv_error); |
1da177e4 | 450 | |
4b340ae2 BH |
451 | /* |
452 | * Handle IPV6_RECVPATHMTU | |
453 | */ | |
85fbaa75 HFS |
454 | int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len, |
455 | int *addr_len) | |
4b340ae2 BH |
456 | { |
457 | struct ipv6_pinfo *np = inet6_sk(sk); | |
458 | struct sk_buff *skb; | |
4b340ae2 | 459 | struct ip6_mtuinfo mtu_info; |
342dfc30 | 460 | DECLARE_SOCKADDR(struct sockaddr_in6 *, sin, msg->msg_name); |
4b340ae2 BH |
461 | int err; |
462 | int copied; | |
463 | ||
464 | err = -EAGAIN; | |
465 | skb = xchg(&np->rxpmtu, NULL); | |
63159f29 | 466 | if (!skb) |
4b340ae2 BH |
467 | goto out; |
468 | ||
469 | copied = skb->len; | |
470 | if (copied > len) { | |
471 | msg->msg_flags |= MSG_TRUNC; | |
472 | copied = len; | |
473 | } | |
51f3d02b | 474 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
4b340ae2 BH |
475 | if (err) |
476 | goto out_free_skb; | |
477 | ||
478 | sock_recv_timestamp(msg, sk, skb); | |
479 | ||
480 | memcpy(&mtu_info, IP6CBMTU(skb), sizeof(mtu_info)); | |
481 | ||
4b340ae2 BH |
482 | if (sin) { |
483 | sin->sin6_family = AF_INET6; | |
484 | sin->sin6_flowinfo = 0; | |
485 | sin->sin6_port = 0; | |
486 | sin->sin6_scope_id = mtu_info.ip6m_addr.sin6_scope_id; | |
4e3fd7a0 | 487 | sin->sin6_addr = mtu_info.ip6m_addr.sin6_addr; |
85fbaa75 | 488 | *addr_len = sizeof(*sin); |
4b340ae2 BH |
489 | } |
490 | ||
491 | put_cmsg(msg, SOL_IPV6, IPV6_PATHMTU, sizeof(mtu_info), &mtu_info); | |
492 | ||
493 | err = copied; | |
494 | ||
495 | out_free_skb: | |
496 | kfree_skb(skb); | |
497 | out: | |
498 | return err; | |
499 | } | |
1da177e4 LT |
500 | |
501 | ||
4b261c75 HFS |
502 | void ip6_datagram_recv_common_ctl(struct sock *sk, struct msghdr *msg, |
503 | struct sk_buff *skb) | |
1da177e4 LT |
504 | { |
505 | struct ipv6_pinfo *np = inet6_sk(sk); | |
4b261c75 | 506 | bool is_ipv6 = skb->protocol == htons(ETH_P_IPV6); |
1da177e4 LT |
507 | |
508 | if (np->rxopt.bits.rxinfo) { | |
509 | struct in6_pktinfo src_info; | |
510 | ||
4b261c75 HFS |
511 | if (is_ipv6) { |
512 | src_info.ipi6_ifindex = IP6CB(skb)->iif; | |
513 | src_info.ipi6_addr = ipv6_hdr(skb)->daddr; | |
514 | } else { | |
515 | src_info.ipi6_ifindex = | |
516 | PKTINFO_SKB_CB(skb)->ipi_ifindex; | |
517 | ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr, | |
518 | &src_info.ipi6_addr); | |
519 | } | |
829ae9d6 WB |
520 | |
521 | if (src_info.ipi6_ifindex >= 0) | |
522 | put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, | |
523 | sizeof(src_info), &src_info); | |
1da177e4 | 524 | } |
4b261c75 HFS |
525 | } |
526 | ||
527 | void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg, | |
528 | struct sk_buff *skb) | |
529 | { | |
530 | struct ipv6_pinfo *np = inet6_sk(sk); | |
531 | struct inet6_skb_parm *opt = IP6CB(skb); | |
532 | unsigned char *nh = skb_network_header(skb); | |
1da177e4 LT |
533 | |
534 | if (np->rxopt.bits.rxhlim) { | |
0660e03f | 535 | int hlim = ipv6_hdr(skb)->hop_limit; |
1da177e4 LT |
536 | put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim); |
537 | } | |
538 | ||
41a1f8ea | 539 | if (np->rxopt.bits.rxtclass) { |
e7219858 | 540 | int tclass = ipv6_get_dsfield(ipv6_hdr(skb)); |
41a1f8ea YH |
541 | put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass); |
542 | } | |
543 | ||
6502ca52 YH |
544 | if (np->rxopt.bits.rxflow) { |
545 | __be32 flowinfo = ip6_flowinfo((struct ipv6hdr *)nh); | |
546 | if (flowinfo) | |
547 | put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo); | |
1da177e4 | 548 | } |
333fad53 YH |
549 | |
550 | /* HbH is allowed only once */ | |
1da177e4 | 551 | if (np->rxopt.bits.hopopts && opt->hop) { |
d56f90a7 | 552 | u8 *ptr = nh + opt->hop; |
1da177e4 LT |
553 | put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr); |
554 | } | |
333fad53 YH |
555 | |
556 | if (opt->lastopt && | |
557 | (np->rxopt.bits.dstopts || np->rxopt.bits.srcrt)) { | |
558 | /* | |
559 | * Silly enough, but we need to reparse in order to | |
560 | * report extension headers (except for HbH) | |
561 | * in order. | |
562 | * | |
1ab1457c | 563 | * Also note that IPV6_RECVRTHDRDSTOPTS is NOT |
333fad53 YH |
564 | * (and WILL NOT be) defined because |
565 | * IPV6_RECVDSTOPTS is more generic. --yoshfuji | |
566 | */ | |
567 | unsigned int off = sizeof(struct ipv6hdr); | |
0660e03f | 568 | u8 nexthdr = ipv6_hdr(skb)->nexthdr; |
333fad53 YH |
569 | |
570 | while (off <= opt->lastopt) { | |
95c96174 | 571 | unsigned int len; |
d56f90a7 | 572 | u8 *ptr = nh + off; |
333fad53 | 573 | |
b5a4257c | 574 | switch (nexthdr) { |
333fad53 YH |
575 | case IPPROTO_DSTOPTS: |
576 | nexthdr = ptr[0]; | |
577 | len = (ptr[1] + 1) << 3; | |
578 | if (np->rxopt.bits.dstopts) | |
579 | put_cmsg(msg, SOL_IPV6, IPV6_DSTOPTS, len, ptr); | |
580 | break; | |
581 | case IPPROTO_ROUTING: | |
582 | nexthdr = ptr[0]; | |
583 | len = (ptr[1] + 1) << 3; | |
584 | if (np->rxopt.bits.srcrt) | |
585 | put_cmsg(msg, SOL_IPV6, IPV6_RTHDR, len, ptr); | |
586 | break; | |
587 | case IPPROTO_AH: | |
588 | nexthdr = ptr[0]; | |
a3059893 | 589 | len = (ptr[1] + 2) << 2; |
333fad53 YH |
590 | break; |
591 | default: | |
592 | nexthdr = ptr[0]; | |
593 | len = (ptr[1] + 1) << 3; | |
594 | break; | |
595 | } | |
596 | ||
597 | off += len; | |
598 | } | |
599 | } | |
600 | ||
601 | /* socket options in old style */ | |
602 | if (np->rxopt.bits.rxoinfo) { | |
603 | struct in6_pktinfo src_info; | |
604 | ||
605 | src_info.ipi6_ifindex = opt->iif; | |
4e3fd7a0 | 606 | src_info.ipi6_addr = ipv6_hdr(skb)->daddr; |
333fad53 YH |
607 | put_cmsg(msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info); |
608 | } | |
609 | if (np->rxopt.bits.rxohlim) { | |
0660e03f | 610 | int hlim = ipv6_hdr(skb)->hop_limit; |
333fad53 YH |
611 | put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim); |
612 | } | |
613 | if (np->rxopt.bits.ohopopts && opt->hop) { | |
d56f90a7 | 614 | u8 *ptr = nh + opt->hop; |
333fad53 YH |
615 | put_cmsg(msg, SOL_IPV6, IPV6_2292HOPOPTS, (ptr[1]+1)<<3, ptr); |
616 | } | |
617 | if (np->rxopt.bits.odstopts && opt->dst0) { | |
d56f90a7 | 618 | u8 *ptr = nh + opt->dst0; |
333fad53 | 619 | put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); |
1da177e4 | 620 | } |
333fad53 | 621 | if (np->rxopt.bits.osrcrt && opt->srcrt) { |
d56f90a7 | 622 | struct ipv6_rt_hdr *rthdr = (struct ipv6_rt_hdr *)(nh + opt->srcrt); |
333fad53 | 623 | put_cmsg(msg, SOL_IPV6, IPV6_2292RTHDR, (rthdr->hdrlen+1) << 3, rthdr); |
1da177e4 | 624 | } |
333fad53 | 625 | if (np->rxopt.bits.odstopts && opt->dst1) { |
d56f90a7 | 626 | u8 *ptr = nh + opt->dst1; |
333fad53 | 627 | put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); |
1da177e4 | 628 | } |
6c468622 BS |
629 | if (np->rxopt.bits.rxorigdstaddr) { |
630 | struct sockaddr_in6 sin6; | |
747465ef | 631 | __be16 *ports = (__be16 *) skb_transport_header(skb); |
6c468622 BS |
632 | |
633 | if (skb_transport_offset(skb) + 4 <= skb->len) { | |
634 | /* All current transport protocols have the port numbers in the | |
635 | * first four bytes of the transport header and this function is | |
636 | * written with this assumption in mind. | |
637 | */ | |
638 | ||
639 | sin6.sin6_family = AF_INET6; | |
4e3fd7a0 | 640 | sin6.sin6_addr = ipv6_hdr(skb)->daddr; |
6c468622 BS |
641 | sin6.sin6_port = ports[1]; |
642 | sin6.sin6_flowinfo = 0; | |
3868b7aa HFS |
643 | sin6.sin6_scope_id = |
644 | ipv6_iface_scope_id(&ipv6_hdr(skb)->daddr, | |
645 | opt->iif); | |
6c468622 BS |
646 | |
647 | put_cmsg(msg, SOL_IPV6, IPV6_ORIGDSTADDR, sizeof(sin6), &sin6); | |
648 | } | |
649 | } | |
4b261c75 HFS |
650 | } |
651 | ||
652 | void ip6_datagram_recv_ctl(struct sock *sk, struct msghdr *msg, | |
653 | struct sk_buff *skb) | |
654 | { | |
655 | ip6_datagram_recv_common_ctl(sk, msg, skb); | |
656 | ip6_datagram_recv_specific_ctl(sk, msg, skb); | |
1da177e4 | 657 | } |
8e72d37e | 658 | EXPORT_SYMBOL_GPL(ip6_datagram_recv_ctl); |
1da177e4 | 659 | |
73df66f8 TP |
660 | int ip6_datagram_send_ctl(struct net *net, struct sock *sk, |
661 | struct msghdr *msg, struct flowi6 *fl6, | |
662 | struct ipv6_txoptions *opt, | |
663 | int *hlimit, int *tclass, int *dontfrag) | |
1da177e4 LT |
664 | { |
665 | struct in6_pktinfo *src_info; | |
666 | struct cmsghdr *cmsg; | |
667 | struct ipv6_rt_hdr *rthdr; | |
668 | struct ipv6_opt_hdr *hdr; | |
669 | int len; | |
670 | int err = 0; | |
671 | ||
f95b414e | 672 | for_each_cmsghdr(cmsg, msg) { |
1da177e4 | 673 | int addr_type; |
1da177e4 LT |
674 | |
675 | if (!CMSG_OK(msg, cmsg)) { | |
676 | err = -EINVAL; | |
677 | goto exit_f; | |
678 | } | |
679 | ||
680 | if (cmsg->cmsg_level != SOL_IPV6) | |
681 | continue; | |
682 | ||
683 | switch (cmsg->cmsg_type) { | |
1ab1457c YH |
684 | case IPV6_PKTINFO: |
685 | case IPV6_2292PKTINFO: | |
187e3838 YH |
686 | { |
687 | struct net_device *dev = NULL; | |
688 | ||
1ab1457c | 689 | if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct in6_pktinfo))) { |
1da177e4 LT |
690 | err = -EINVAL; |
691 | goto exit_f; | |
692 | } | |
693 | ||
694 | src_info = (struct in6_pktinfo *)CMSG_DATA(cmsg); | |
1ab1457c | 695 | |
1da177e4 | 696 | if (src_info->ipi6_ifindex) { |
4c9483b2 DM |
697 | if (fl6->flowi6_oif && |
698 | src_info->ipi6_ifindex != fl6->flowi6_oif) | |
1da177e4 | 699 | return -EINVAL; |
4c9483b2 | 700 | fl6->flowi6_oif = src_info->ipi6_ifindex; |
1da177e4 LT |
701 | } |
702 | ||
187e3838 | 703 | addr_type = __ipv6_addr_type(&src_info->ipi6_addr); |
1da177e4 | 704 | |
536b2e92 | 705 | rcu_read_lock(); |
4c9483b2 DM |
706 | if (fl6->flowi6_oif) { |
707 | dev = dev_get_by_index_rcu(net, fl6->flowi6_oif); | |
536b2e92 ED |
708 | if (!dev) { |
709 | rcu_read_unlock(); | |
187e3838 | 710 | return -ENODEV; |
536b2e92 ED |
711 | } |
712 | } else if (addr_type & IPV6_ADDR_LINKLOCAL) { | |
713 | rcu_read_unlock(); | |
187e3838 | 714 | return -EINVAL; |
536b2e92 | 715 | } |
1ab1457c | 716 | |
187e3838 YH |
717 | if (addr_type != IPV6_ADDR_ANY) { |
718 | int strict = __ipv6_addr_src_scope(addr_type) <= IPV6_ADDR_SCOPE_LINKLOCAL; | |
2563fa59 | 719 | if (!(inet_sk(sk)->freebind || inet_sk(sk)->transparent) && |
ec0506db | 720 | !ipv6_chk_addr(net, &src_info->ipi6_addr, |
7c90cc2d FLB |
721 | strict ? dev : NULL, 0) && |
722 | !ipv6_chk_acast_addr_src(net, dev, | |
723 | &src_info->ipi6_addr)) | |
187e3838 YH |
724 | err = -EINVAL; |
725 | else | |
4e3fd7a0 | 726 | fl6->saddr = src_info->ipi6_addr; |
1da177e4 | 727 | } |
187e3838 | 728 | |
536b2e92 | 729 | rcu_read_unlock(); |
1da177e4 | 730 | |
187e3838 YH |
731 | if (err) |
732 | goto exit_f; | |
733 | ||
1da177e4 | 734 | break; |
187e3838 | 735 | } |
1da177e4 LT |
736 | |
737 | case IPV6_FLOWINFO: | |
1ab1457c | 738 | if (cmsg->cmsg_len < CMSG_LEN(4)) { |
1da177e4 LT |
739 | err = -EINVAL; |
740 | goto exit_f; | |
741 | } | |
742 | ||
4c9483b2 DM |
743 | if (fl6->flowlabel&IPV6_FLOWINFO_MASK) { |
744 | if ((fl6->flowlabel^*(__be32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) { | |
1da177e4 LT |
745 | err = -EINVAL; |
746 | goto exit_f; | |
747 | } | |
748 | } | |
4c9483b2 | 749 | fl6->flowlabel = IPV6_FLOWINFO_MASK & *(__be32 *)CMSG_DATA(cmsg); |
1da177e4 LT |
750 | break; |
751 | ||
333fad53 | 752 | case IPV6_2292HOPOPTS: |
1da177e4 | 753 | case IPV6_HOPOPTS: |
1ab1457c | 754 | if (opt->hopopt || cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { |
1da177e4 LT |
755 | err = -EINVAL; |
756 | goto exit_f; | |
757 | } | |
758 | ||
759 | hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); | |
760 | len = ((hdr->hdrlen + 1) << 3); | |
761 | if (cmsg->cmsg_len < CMSG_LEN(len)) { | |
762 | err = -EINVAL; | |
763 | goto exit_f; | |
764 | } | |
af31f412 | 765 | if (!ns_capable(net->user_ns, CAP_NET_RAW)) { |
1da177e4 LT |
766 | err = -EPERM; |
767 | goto exit_f; | |
768 | } | |
769 | opt->opt_nflen += len; | |
770 | opt->hopopt = hdr; | |
771 | break; | |
772 | ||
333fad53 | 773 | case IPV6_2292DSTOPTS: |
1ab1457c | 774 | if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { |
1da177e4 LT |
775 | err = -EINVAL; |
776 | goto exit_f; | |
777 | } | |
778 | ||
779 | hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); | |
780 | len = ((hdr->hdrlen + 1) << 3); | |
781 | if (cmsg->cmsg_len < CMSG_LEN(len)) { | |
782 | err = -EINVAL; | |
783 | goto exit_f; | |
784 | } | |
af31f412 | 785 | if (!ns_capable(net->user_ns, CAP_NET_RAW)) { |
1da177e4 LT |
786 | err = -EPERM; |
787 | goto exit_f; | |
788 | } | |
789 | if (opt->dst1opt) { | |
790 | err = -EINVAL; | |
791 | goto exit_f; | |
792 | } | |
793 | opt->opt_flen += len; | |
794 | opt->dst1opt = hdr; | |
795 | break; | |
796 | ||
333fad53 YH |
797 | case IPV6_DSTOPTS: |
798 | case IPV6_RTHDRDSTOPTS: | |
799 | if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_opt_hdr))) { | |
800 | err = -EINVAL; | |
801 | goto exit_f; | |
802 | } | |
803 | ||
804 | hdr = (struct ipv6_opt_hdr *)CMSG_DATA(cmsg); | |
805 | len = ((hdr->hdrlen + 1) << 3); | |
806 | if (cmsg->cmsg_len < CMSG_LEN(len)) { | |
807 | err = -EINVAL; | |
808 | goto exit_f; | |
809 | } | |
af31f412 | 810 | if (!ns_capable(net->user_ns, CAP_NET_RAW)) { |
333fad53 YH |
811 | err = -EPERM; |
812 | goto exit_f; | |
813 | } | |
814 | if (cmsg->cmsg_type == IPV6_DSTOPTS) { | |
815 | opt->opt_flen += len; | |
816 | opt->dst1opt = hdr; | |
817 | } else { | |
818 | opt->opt_nflen += len; | |
819 | opt->dst0opt = hdr; | |
820 | } | |
821 | break; | |
822 | ||
823 | case IPV6_2292RTHDR: | |
1da177e4 | 824 | case IPV6_RTHDR: |
1ab1457c | 825 | if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct ipv6_rt_hdr))) { |
1da177e4 LT |
826 | err = -EINVAL; |
827 | goto exit_f; | |
828 | } | |
829 | ||
830 | rthdr = (struct ipv6_rt_hdr *)CMSG_DATA(cmsg); | |
831 | ||
280a9d34 | 832 | switch (rthdr->type) { |
07a93626 | 833 | #if IS_ENABLED(CONFIG_IPV6_MIP6) |
280a9d34 | 834 | case IPV6_SRCRT_TYPE_2: |
6e093d9d BH |
835 | if (rthdr->hdrlen != 2 || |
836 | rthdr->segments_left != 1) { | |
837 | err = -EINVAL; | |
838 | goto exit_f; | |
839 | } | |
280a9d34 | 840 | break; |
bb4dbf9e | 841 | #endif |
280a9d34 | 842 | default: |
1da177e4 LT |
843 | err = -EINVAL; |
844 | goto exit_f; | |
845 | } | |
846 | ||
847 | len = ((rthdr->hdrlen + 1) << 3); | |
848 | ||
1ab1457c | 849 | if (cmsg->cmsg_len < CMSG_LEN(len)) { |
1da177e4 LT |
850 | err = -EINVAL; |
851 | goto exit_f; | |
852 | } | |
853 | ||
854 | /* segments left must also match */ | |
855 | if ((rthdr->hdrlen >> 1) != rthdr->segments_left) { | |
856 | err = -EINVAL; | |
857 | goto exit_f; | |
858 | } | |
859 | ||
860 | opt->opt_nflen += len; | |
861 | opt->srcrt = rthdr; | |
862 | ||
333fad53 | 863 | if (cmsg->cmsg_type == IPV6_2292RTHDR && opt->dst1opt) { |
1da177e4 LT |
864 | int dsthdrlen = ((opt->dst1opt->hdrlen+1)<<3); |
865 | ||
866 | opt->opt_nflen += dsthdrlen; | |
867 | opt->dst0opt = opt->dst1opt; | |
868 | opt->dst1opt = NULL; | |
869 | opt->opt_flen -= dsthdrlen; | |
870 | } | |
871 | ||
872 | break; | |
873 | ||
333fad53 | 874 | case IPV6_2292HOPLIMIT: |
1da177e4 LT |
875 | case IPV6_HOPLIMIT: |
876 | if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) { | |
877 | err = -EINVAL; | |
878 | goto exit_f; | |
879 | } | |
880 | ||
881 | *hlimit = *(int *)CMSG_DATA(cmsg); | |
e8766fc8 SW |
882 | if (*hlimit < -1 || *hlimit > 0xff) { |
883 | err = -EINVAL; | |
884 | goto exit_f; | |
885 | } | |
886 | ||
1da177e4 LT |
887 | break; |
888 | ||
41a1f8ea YH |
889 | case IPV6_TCLASS: |
890 | { | |
891 | int tc; | |
892 | ||
893 | err = -EINVAL; | |
b5a4257c | 894 | if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) |
41a1f8ea | 895 | goto exit_f; |
41a1f8ea YH |
896 | |
897 | tc = *(int *)CMSG_DATA(cmsg); | |
d0ee011f | 898 | if (tc < -1 || tc > 0xff) |
41a1f8ea YH |
899 | goto exit_f; |
900 | ||
901 | err = 0; | |
902 | *tclass = tc; | |
903 | ||
13b52cd4 BH |
904 | break; |
905 | } | |
906 | ||
907 | case IPV6_DONTFRAG: | |
908 | { | |
909 | int df; | |
910 | ||
911 | err = -EINVAL; | |
b5a4257c | 912 | if (cmsg->cmsg_len != CMSG_LEN(sizeof(int))) |
13b52cd4 | 913 | goto exit_f; |
13b52cd4 BH |
914 | |
915 | df = *(int *)CMSG_DATA(cmsg); | |
916 | if (df < 0 || df > 1) | |
917 | goto exit_f; | |
918 | ||
919 | err = 0; | |
920 | *dontfrag = df; | |
921 | ||
41a1f8ea YH |
922 | break; |
923 | } | |
1da177e4 | 924 | default: |
ba7a46f1 JP |
925 | net_dbg_ratelimited("invalid cmsg type: %d\n", |
926 | cmsg->cmsg_type); | |
1da177e4 | 927 | err = -EINVAL; |
4a36702e | 928 | goto exit_f; |
3ff50b79 | 929 | } |
1da177e4 LT |
930 | } |
931 | ||
932 | exit_f: | |
933 | return err; | |
934 | } | |
73df66f8 | 935 | EXPORT_SYMBOL_GPL(ip6_datagram_send_ctl); |
17ef66af LC |
936 | |
937 | void ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp, | |
938 | __u16 srcp, __u16 destp, int bucket) | |
939 | { | |
17ef66af LC |
940 | const struct in6_addr *dest, *src; |
941 | ||
efe4208f ED |
942 | dest = &sp->sk_v6_daddr; |
943 | src = &sp->sk_v6_rcv_saddr; | |
17ef66af LC |
944 | seq_printf(seq, |
945 | "%5d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X " | |
d14c5ab6 | 946 | "%02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d\n", |
17ef66af LC |
947 | bucket, |
948 | src->s6_addr32[0], src->s6_addr32[1], | |
949 | src->s6_addr32[2], src->s6_addr32[3], srcp, | |
950 | dest->s6_addr32[0], dest->s6_addr32[1], | |
951 | dest->s6_addr32[2], dest->s6_addr32[3], destp, | |
952 | sp->sk_state, | |
953 | sk_wmem_alloc_get(sp), | |
954 | sk_rmem_alloc_get(sp), | |
955 | 0, 0L, 0, | |
956 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), | |
957 | 0, | |
958 | sock_i_ino(sp), | |
959 | atomic_read(&sp->sk_refcnt), sp, | |
960 | atomic_read(&sp->sk_drops)); | |
961 | } |