Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * UDP over IPv6 | |
3 | * Linux INET6 implementation | |
4 | * | |
5 | * Authors: | |
6 | * Pedro Roque <roque@di.fc.ul.pt> | |
7 | * | |
8 | * Based on linux/ipv4/udp.c | |
9 | * | |
10 | * $Id: udp.c,v 1.65 2002/02/01 22:01:04 davem Exp $ | |
11 | * | |
12 | * Fixes: | |
13 | * Hideaki YOSHIFUJI : sin6_scope_id support | |
14 | * YOSHIFUJI Hideaki @USAGI and: Support IPV6_V6ONLY socket option, which | |
15 | * Alexey Kuznetsov allow both IPv4 and IPv6 sockets to bind | |
16 | * a single port at the same time. | |
17 | * Kazunori MIYAZAWA @USAGI: change process style to use ip6_append_data | |
18 | * YOSHIFUJI Hideaki @USAGI: convert /proc/net/udp6 to seq_file. | |
19 | * | |
20 | * This program is free software; you can redistribute it and/or | |
21 | * modify it under the terms of the GNU General Public License | |
22 | * as published by the Free Software Foundation; either version | |
23 | * 2 of the License, or (at your option) any later version. | |
24 | */ | |
25 | ||
1da177e4 LT |
26 | #include <linux/errno.h> |
27 | #include <linux/types.h> | |
28 | #include <linux/socket.h> | |
29 | #include <linux/sockios.h> | |
30 | #include <linux/sched.h> | |
31 | #include <linux/net.h> | |
32 | #include <linux/in6.h> | |
33 | #include <linux/netdevice.h> | |
34 | #include <linux/if_arp.h> | |
35 | #include <linux/ipv6.h> | |
36 | #include <linux/icmpv6.h> | |
37 | #include <linux/init.h> | |
3305b80c | 38 | #include <linux/skbuff.h> |
1da177e4 LT |
39 | #include <asm/uaccess.h> |
40 | ||
1da177e4 LT |
41 | #include <net/ndisc.h> |
42 | #include <net/protocol.h> | |
43 | #include <net/transp_v6.h> | |
44 | #include <net/ip6_route.h> | |
1da177e4 | 45 | #include <net/raw.h> |
c752f073 | 46 | #include <net/tcp_states.h> |
1da177e4 LT |
47 | #include <net/ip6_checksum.h> |
48 | #include <net/xfrm.h> | |
49 | ||
50 | #include <linux/proc_fs.h> | |
51 | #include <linux/seq_file.h> | |
ba4e58ec | 52 | #include "udp_impl.h" |
1da177e4 | 53 | |
ba89966c | 54 | DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6) __read_mostly; |
1da177e4 | 55 | |
25030a7f | 56 | static inline int udp_v6_get_port(struct sock *sk, unsigned short snum) |
1da177e4 | 57 | { |
25030a7f | 58 | return udp_get_port(sk, snum, ipv6_rcv_saddr_equal); |
1da177e4 LT |
59 | } |
60 | ||
ba4e58ec GR |
61 | static struct sock *__udp6_lib_lookup(struct in6_addr *saddr, __be16 sport, |
62 | struct in6_addr *daddr, __be16 dport, | |
63 | int dif, struct hlist_head udptable[]) | |
1da177e4 LT |
64 | { |
65 | struct sock *sk, *result = NULL; | |
66 | struct hlist_node *node; | |
67 | unsigned short hnum = ntohs(dport); | |
68 | int badness = -1; | |
69 | ||
70 | read_lock(&udp_hash_lock); | |
ba4e58ec | 71 | sk_for_each(sk, node, &udptable[hnum & (UDP_HTABLE_SIZE - 1)]) { |
1da177e4 LT |
72 | struct inet_sock *inet = inet_sk(sk); |
73 | ||
74 | if (inet->num == hnum && sk->sk_family == PF_INET6) { | |
75 | struct ipv6_pinfo *np = inet6_sk(sk); | |
76 | int score = 0; | |
77 | if (inet->dport) { | |
78 | if (inet->dport != sport) | |
79 | continue; | |
80 | score++; | |
81 | } | |
82 | if (!ipv6_addr_any(&np->rcv_saddr)) { | |
83 | if (!ipv6_addr_equal(&np->rcv_saddr, daddr)) | |
84 | continue; | |
85 | score++; | |
86 | } | |
87 | if (!ipv6_addr_any(&np->daddr)) { | |
88 | if (!ipv6_addr_equal(&np->daddr, saddr)) | |
89 | continue; | |
90 | score++; | |
91 | } | |
92 | if (sk->sk_bound_dev_if) { | |
93 | if (sk->sk_bound_dev_if != dif) | |
94 | continue; | |
95 | score++; | |
96 | } | |
97 | if(score == 4) { | |
98 | result = sk; | |
99 | break; | |
100 | } else if(score > badness) { | |
101 | result = sk; | |
102 | badness = score; | |
103 | } | |
104 | } | |
105 | } | |
106 | if (result) | |
107 | sock_hold(result); | |
108 | read_unlock(&udp_hash_lock); | |
109 | return result; | |
110 | } | |
111 | ||
1da177e4 LT |
112 | /* |
113 | * This should be easy, if there is something there we | |
114 | * return it, otherwise we block. | |
115 | */ | |
116 | ||
ba4e58ec | 117 | int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk, |
1da177e4 LT |
118 | struct msghdr *msg, size_t len, |
119 | int noblock, int flags, int *addr_len) | |
120 | { | |
121 | struct ipv6_pinfo *np = inet6_sk(sk); | |
122 | struct inet_sock *inet = inet_sk(sk); | |
123 | struct sk_buff *skb; | |
124 | size_t copied; | |
ba4e58ec | 125 | int err, copy_only, is_udplite = IS_UDPLITE(sk); |
1da177e4 LT |
126 | |
127 | if (addr_len) | |
128 | *addr_len=sizeof(struct sockaddr_in6); | |
129 | ||
130 | if (flags & MSG_ERRQUEUE) | |
131 | return ipv6_recv_error(sk, msg, len); | |
132 | ||
133 | try_again: | |
134 | skb = skb_recv_datagram(sk, flags, noblock, &err); | |
135 | if (!skb) | |
136 | goto out; | |
137 | ||
138 | copied = skb->len - sizeof(struct udphdr); | |
139 | if (copied > len) { | |
140 | copied = len; | |
141 | msg->msg_flags |= MSG_TRUNC; | |
142 | } | |
143 | ||
ba4e58ec GR |
144 | /* |
145 | * Decide whether to checksum and/or copy data. | |
146 | */ | |
147 | copy_only = (skb->ip_summed==CHECKSUM_UNNECESSARY); | |
148 | ||
149 | if (is_udplite || (!copy_only && msg->msg_flags&MSG_TRUNC)) { | |
150 | if (__udp_lib_checksum_complete(skb)) | |
1da177e4 | 151 | goto csum_copy_err; |
ba4e58ec GR |
152 | copy_only = 1; |
153 | } | |
154 | ||
155 | if (copy_only) | |
156 | err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr), | |
157 | msg->msg_iov, copied ); | |
158 | else { | |
1da177e4 LT |
159 | err = skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov); |
160 | if (err == -EINVAL) | |
161 | goto csum_copy_err; | |
162 | } | |
163 | if (err) | |
164 | goto out_free; | |
165 | ||
166 | sock_recv_timestamp(msg, sk, skb); | |
167 | ||
168 | /* Copy the address. */ | |
169 | if (msg->msg_name) { | |
170 | struct sockaddr_in6 *sin6; | |
171 | ||
172 | sin6 = (struct sockaddr_in6 *) msg->msg_name; | |
173 | sin6->sin6_family = AF_INET6; | |
174 | sin6->sin6_port = skb->h.uh->source; | |
175 | sin6->sin6_flowinfo = 0; | |
176 | sin6->sin6_scope_id = 0; | |
177 | ||
178 | if (skb->protocol == htons(ETH_P_IP)) | |
179 | ipv6_addr_set(&sin6->sin6_addr, 0, 0, | |
180 | htonl(0xffff), skb->nh.iph->saddr); | |
181 | else { | |
182 | ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr); | |
183 | if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
184 | sin6->sin6_scope_id = IP6CB(skb)->iif; | |
185 | } | |
186 | ||
187 | } | |
188 | if (skb->protocol == htons(ETH_P_IP)) { | |
189 | if (inet->cmsg_flags) | |
190 | ip_cmsg_recv(msg, skb); | |
191 | } else { | |
192 | if (np->rxopt.all) | |
193 | datagram_recv_ctl(sk, msg, skb); | |
194 | } | |
195 | ||
196 | err = copied; | |
197 | if (flags & MSG_TRUNC) | |
198 | err = skb->len - sizeof(struct udphdr); | |
199 | ||
200 | out_free: | |
201 | skb_free_datagram(sk, skb); | |
202 | out: | |
203 | return err; | |
204 | ||
205 | csum_copy_err: | |
3305b80c | 206 | skb_kill_datagram(sk, skb, flags); |
1da177e4 LT |
207 | |
208 | if (flags & MSG_DONTWAIT) { | |
ba4e58ec | 209 | UDP6_INC_STATS_USER(UDP_MIB_INERRORS, is_udplite); |
1da177e4 LT |
210 | return -EAGAIN; |
211 | } | |
212 | goto try_again; | |
213 | } | |
214 | ||
ba4e58ec GR |
215 | void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt, |
216 | int type, int code, int offset, __be32 info, | |
217 | struct hlist_head udptable[] ) | |
1da177e4 LT |
218 | { |
219 | struct ipv6_pinfo *np; | |
220 | struct ipv6hdr *hdr = (struct ipv6hdr*)skb->data; | |
1da177e4 LT |
221 | struct in6_addr *saddr = &hdr->saddr; |
222 | struct in6_addr *daddr = &hdr->daddr; | |
223 | struct udphdr *uh = (struct udphdr*)(skb->data+offset); | |
224 | struct sock *sk; | |
225 | int err; | |
226 | ||
ba4e58ec GR |
227 | sk = __udp6_lib_lookup(daddr, uh->dest, |
228 | saddr, uh->source, inet6_iif(skb), udptable); | |
1da177e4 LT |
229 | if (sk == NULL) |
230 | return; | |
231 | ||
232 | np = inet6_sk(sk); | |
233 | ||
234 | if (!icmpv6_err_convert(type, code, &err) && !np->recverr) | |
235 | goto out; | |
236 | ||
237 | if (sk->sk_state != TCP_ESTABLISHED && !np->recverr) | |
238 | goto out; | |
239 | ||
240 | if (np->recverr) | |
241 | ipv6_icmp_error(sk, skb, err, uh->dest, ntohl(info), (u8 *)(uh+1)); | |
242 | ||
243 | sk->sk_err = err; | |
244 | sk->sk_error_report(sk); | |
245 | out: | |
246 | sock_put(sk); | |
247 | } | |
248 | ||
ba4e58ec GR |
249 | static __inline__ void udpv6_err(struct sk_buff *skb, |
250 | struct inet6_skb_parm *opt, int type, | |
251 | int code, int offset, __u32 info ) | |
252 | { | |
253 | return __udp6_lib_err(skb, opt, type, code, offset, info, udp_hash); | |
254 | } | |
255 | ||
256 | int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb) | |
1da177e4 | 257 | { |
ba4e58ec | 258 | struct udp_sock *up = udp_sk(sk); |
a18135eb DM |
259 | int rc; |
260 | ||
ba4e58ec GR |
261 | if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) |
262 | goto drop; | |
1da177e4 | 263 | |
ba4e58ec GR |
264 | /* |
265 | * UDP-Lite specific tests, ignored on UDP sockets (see net/ipv4/udp.c). | |
266 | */ | |
267 | if ((up->pcflag & UDPLITE_RECV_CC) && UDP_SKB_CB(skb)->partial_cov) { | |
268 | ||
269 | if (up->pcrlen == 0) { /* full coverage was set */ | |
270 | LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: partial coverage" | |
271 | " %d while full coverage %d requested\n", | |
272 | UDP_SKB_CB(skb)->cscov, skb->len); | |
273 | goto drop; | |
274 | } | |
275 | if (UDP_SKB_CB(skb)->cscov < up->pcrlen) { | |
276 | LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: coverage %d " | |
277 | "too small, need min %d\n", | |
278 | UDP_SKB_CB(skb)->cscov, up->pcrlen); | |
279 | goto drop; | |
280 | } | |
1da177e4 LT |
281 | } |
282 | ||
ba4e58ec GR |
283 | if (udp_lib_checksum_complete(skb)) |
284 | goto drop; | |
285 | ||
a18135eb DM |
286 | if ((rc = sock_queue_rcv_skb(sk,skb)) < 0) { |
287 | /* Note that an ENOMEM error is charged twice */ | |
288 | if (rc == -ENOMEM) | |
ba4e58ec GR |
289 | UDP6_INC_STATS_BH(UDP_MIB_RCVBUFERRORS, up->pcflag); |
290 | goto drop; | |
1da177e4 | 291 | } |
ba4e58ec | 292 | UDP6_INC_STATS_BH(UDP_MIB_INDATAGRAMS, up->pcflag); |
1da177e4 | 293 | return 0; |
ba4e58ec GR |
294 | drop: |
295 | UDP6_INC_STATS_BH(UDP_MIB_INERRORS, up->pcflag); | |
296 | kfree_skb(skb); | |
297 | return -1; | |
1da177e4 LT |
298 | } |
299 | ||
300 | static struct sock *udp_v6_mcast_next(struct sock *sk, | |
e69a4adc AV |
301 | __be16 loc_port, struct in6_addr *loc_addr, |
302 | __be16 rmt_port, struct in6_addr *rmt_addr, | |
1da177e4 LT |
303 | int dif) |
304 | { | |
305 | struct hlist_node *node; | |
306 | struct sock *s = sk; | |
307 | unsigned short num = ntohs(loc_port); | |
308 | ||
309 | sk_for_each_from(s, node) { | |
310 | struct inet_sock *inet = inet_sk(s); | |
311 | ||
312 | if (inet->num == num && s->sk_family == PF_INET6) { | |
313 | struct ipv6_pinfo *np = inet6_sk(s); | |
314 | if (inet->dport) { | |
315 | if (inet->dport != rmt_port) | |
316 | continue; | |
317 | } | |
318 | if (!ipv6_addr_any(&np->daddr) && | |
319 | !ipv6_addr_equal(&np->daddr, rmt_addr)) | |
320 | continue; | |
321 | ||
322 | if (s->sk_bound_dev_if && s->sk_bound_dev_if != dif) | |
323 | continue; | |
324 | ||
325 | if (!ipv6_addr_any(&np->rcv_saddr)) { | |
40796c5e DS |
326 | if (!ipv6_addr_equal(&np->rcv_saddr, loc_addr)) |
327 | continue; | |
1da177e4 LT |
328 | } |
329 | if(!inet6_mc_check(s, loc_addr, rmt_addr)) | |
330 | continue; | |
331 | return s; | |
332 | } | |
333 | } | |
334 | return NULL; | |
335 | } | |
336 | ||
337 | /* | |
338 | * Note: called only from the BH handler context, | |
339 | * so we don't need to lock the hashes. | |
340 | */ | |
ba4e58ec GR |
341 | static int __udp6_lib_mcast_deliver(struct sk_buff *skb, struct in6_addr *saddr, |
342 | struct in6_addr *daddr, struct hlist_head udptable[]) | |
1da177e4 LT |
343 | { |
344 | struct sock *sk, *sk2; | |
ba4e58ec | 345 | const struct udphdr *uh = skb->h.uh; |
1da177e4 LT |
346 | int dif; |
347 | ||
348 | read_lock(&udp_hash_lock); | |
ba4e58ec | 349 | sk = sk_head(&udptable[ntohs(uh->dest) & (UDP_HTABLE_SIZE - 1)]); |
f2776ff0 | 350 | dif = inet6_iif(skb); |
1da177e4 LT |
351 | sk = udp_v6_mcast_next(sk, uh->dest, daddr, uh->source, saddr, dif); |
352 | if (!sk) { | |
353 | kfree_skb(skb); | |
354 | goto out; | |
355 | } | |
356 | ||
357 | sk2 = sk; | |
358 | while ((sk2 = udp_v6_mcast_next(sk_next(sk2), uh->dest, daddr, | |
359 | uh->source, saddr, dif))) { | |
360 | struct sk_buff *buff = skb_clone(skb, GFP_ATOMIC); | |
361 | if (buff) | |
362 | udpv6_queue_rcv_skb(sk2, buff); | |
363 | } | |
364 | udpv6_queue_rcv_skb(sk, skb); | |
365 | out: | |
366 | read_unlock(&udp_hash_lock); | |
ba4e58ec | 367 | return 0; |
1da177e4 LT |
368 | } |
369 | ||
ba4e58ec GR |
370 | static inline int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh) |
371 | ||
372 | { | |
373 | if (uh->check == 0) { | |
374 | /* RFC 2460 section 8.1 says that we SHOULD log | |
375 | this error. Well, it is reasonable. | |
376 | */ | |
377 | LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0\n"); | |
378 | return 1; | |
379 | } | |
380 | if (skb->ip_summed == CHECKSUM_COMPLETE && | |
381 | !csum_ipv6_magic(&skb->nh.ipv6h->saddr, &skb->nh.ipv6h->daddr, | |
382 | skb->len, IPPROTO_UDP, skb->csum )) | |
383 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
384 | ||
385 | if (skb->ip_summed != CHECKSUM_UNNECESSARY) | |
386 | skb->csum = ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, | |
387 | &skb->nh.ipv6h->daddr, | |
388 | skb->len, IPPROTO_UDP, 0); | |
389 | ||
390 | return (UDP_SKB_CB(skb)->partial_cov = 0); | |
391 | } | |
392 | ||
393 | int __udp6_lib_rcv(struct sk_buff **pskb, struct hlist_head udptable[], | |
394 | int is_udplite) | |
1da177e4 LT |
395 | { |
396 | struct sk_buff *skb = *pskb; | |
397 | struct sock *sk; | |
398 | struct udphdr *uh; | |
399 | struct net_device *dev = skb->dev; | |
400 | struct in6_addr *saddr, *daddr; | |
401 | u32 ulen = 0; | |
402 | ||
403 | if (!pskb_may_pull(skb, sizeof(struct udphdr))) | |
404 | goto short_packet; | |
405 | ||
406 | saddr = &skb->nh.ipv6h->saddr; | |
407 | daddr = &skb->nh.ipv6h->daddr; | |
408 | uh = skb->h.uh; | |
409 | ||
410 | ulen = ntohs(uh->len); | |
ba4e58ec GR |
411 | if (ulen > skb->len) |
412 | goto short_packet; | |
1da177e4 | 413 | |
ba4e58ec | 414 | if(! is_udplite ) { /* UDP validates ulen. */ |
1da177e4 | 415 | |
ba4e58ec GR |
416 | /* Check for jumbo payload */ |
417 | if (ulen == 0) | |
418 | ulen = skb->len; | |
1da177e4 | 419 | |
ba4e58ec GR |
420 | if (ulen < sizeof(*uh)) |
421 | goto short_packet; | |
1da177e4 | 422 | |
ba4e58ec GR |
423 | if (ulen < skb->len) { |
424 | if (pskb_trim_rcsum(skb, ulen)) | |
425 | goto short_packet; | |
426 | saddr = &skb->nh.ipv6h->saddr; | |
427 | daddr = &skb->nh.ipv6h->daddr; | |
428 | uh = skb->h.uh; | |
429 | } | |
1da177e4 | 430 | |
ba4e58ec GR |
431 | if (udp6_csum_init(skb, uh)) |
432 | goto discard; | |
fb286bb2 | 433 | |
ba4e58ec GR |
434 | } else { /* UDP-Lite validates cscov. */ |
435 | if (udplite6_csum_init(skb, uh)) | |
436 | goto discard; | |
437 | } | |
1da177e4 LT |
438 | |
439 | /* | |
440 | * Multicast receive code | |
441 | */ | |
ba4e58ec GR |
442 | if (ipv6_addr_is_multicast(daddr)) |
443 | return __udp6_lib_mcast_deliver(skb, saddr, daddr, udptable); | |
1da177e4 LT |
444 | |
445 | /* Unicast */ | |
446 | ||
447 | /* | |
448 | * check socket cache ... must talk to Alan about his plans | |
449 | * for sock caches... i'll skip this for now. | |
450 | */ | |
ba4e58ec GR |
451 | sk = __udp6_lib_lookup(saddr, uh->source, |
452 | daddr, uh->dest, inet6_iif(skb), udptable); | |
1da177e4 LT |
453 | |
454 | if (sk == NULL) { | |
455 | if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) | |
456 | goto discard; | |
457 | ||
ba4e58ec | 458 | if (udp_lib_checksum_complete(skb)) |
1da177e4 | 459 | goto discard; |
ba4e58ec | 460 | UDP6_INC_STATS_BH(UDP_MIB_NOPORTS, is_udplite); |
1da177e4 LT |
461 | |
462 | icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0, dev); | |
463 | ||
464 | kfree_skb(skb); | |
465 | return(0); | |
466 | } | |
467 | ||
468 | /* deliver */ | |
469 | ||
470 | udpv6_queue_rcv_skb(sk, skb); | |
471 | sock_put(sk); | |
472 | return(0); | |
473 | ||
474 | short_packet: | |
ba4e58ec GR |
475 | LIMIT_NETDEBUG(KERN_DEBUG "UDP%sv6: short packet: %d/%u\n", |
476 | is_udplite? "-Lite" : "", ulen, skb->len); | |
1da177e4 LT |
477 | |
478 | discard: | |
ba4e58ec | 479 | UDP6_INC_STATS_BH(UDP_MIB_INERRORS, is_udplite); |
1da177e4 LT |
480 | kfree_skb(skb); |
481 | return(0); | |
482 | } | |
ba4e58ec GR |
483 | |
484 | static __inline__ int udpv6_rcv(struct sk_buff **pskb) | |
485 | { | |
486 | return __udp6_lib_rcv(pskb, udp_hash, 0); | |
487 | } | |
488 | ||
1da177e4 LT |
489 | /* |
490 | * Throw away all pending data and cancel the corking. Socket is locked. | |
491 | */ | |
492 | static void udp_v6_flush_pending_frames(struct sock *sk) | |
493 | { | |
494 | struct udp_sock *up = udp_sk(sk); | |
495 | ||
496 | if (up->pending) { | |
497 | up->len = 0; | |
498 | up->pending = 0; | |
499 | ip6_flush_pending_frames(sk); | |
500 | } | |
501 | } | |
502 | ||
503 | /* | |
504 | * Sending | |
505 | */ | |
506 | ||
507 | static int udp_v6_push_pending_frames(struct sock *sk, struct udp_sock *up) | |
508 | { | |
509 | struct sk_buff *skb; | |
510 | struct udphdr *uh; | |
511 | struct inet_sock *inet = inet_sk(sk); | |
512 | struct flowi *fl = &inet->cork.fl; | |
513 | int err = 0; | |
ba4e58ec | 514 | u32 csum = 0; |
1da177e4 LT |
515 | |
516 | /* Grab the skbuff where UDP header space exists. */ | |
517 | if ((skb = skb_peek(&sk->sk_write_queue)) == NULL) | |
518 | goto out; | |
519 | ||
520 | /* | |
521 | * Create a UDP header | |
522 | */ | |
523 | uh = skb->h.uh; | |
524 | uh->source = fl->fl_ip_sport; | |
525 | uh->dest = fl->fl_ip_dport; | |
526 | uh->len = htons(up->len); | |
527 | uh->check = 0; | |
528 | ||
ba4e58ec GR |
529 | if (up->pcflag) |
530 | csum = udplite_csum_outgoing(sk, skb); | |
531 | else | |
532 | csum = udp_csum_outgoing(sk, skb); | |
1da177e4 | 533 | |
ba4e58ec GR |
534 | /* add protocol-dependent pseudo-header */ |
535 | uh->check = csum_ipv6_magic(&fl->fl6_src, &fl->fl6_dst, | |
536 | up->len, fl->proto, csum ); | |
1da177e4 LT |
537 | if (uh->check == 0) |
538 | uh->check = -1; | |
539 | ||
1da177e4 LT |
540 | err = ip6_push_pending_frames(sk); |
541 | out: | |
542 | up->len = 0; | |
543 | up->pending = 0; | |
544 | return err; | |
545 | } | |
546 | ||
ba4e58ec | 547 | int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk, |
1da177e4 LT |
548 | struct msghdr *msg, size_t len) |
549 | { | |
550 | struct ipv6_txoptions opt_space; | |
551 | struct udp_sock *up = udp_sk(sk); | |
552 | struct inet_sock *inet = inet_sk(sk); | |
553 | struct ipv6_pinfo *np = inet6_sk(sk); | |
554 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) msg->msg_name; | |
555 | struct in6_addr *daddr, *final_p = NULL, final; | |
556 | struct ipv6_txoptions *opt = NULL; | |
557 | struct ip6_flowlabel *flowlabel = NULL; | |
132a55f3 | 558 | struct flowi fl; |
1da177e4 LT |
559 | struct dst_entry *dst; |
560 | int addr_len = msg->msg_namelen; | |
561 | int ulen = len; | |
562 | int hlimit = -1; | |
41a1f8ea | 563 | int tclass = -1; |
1da177e4 LT |
564 | int corkreq = up->corkflag || msg->msg_flags&MSG_MORE; |
565 | int err; | |
987905de | 566 | int connected = 0; |
ba4e58ec GR |
567 | int is_udplite = up->pcflag; |
568 | int (*getfrag)(void *, char *, int, int, int, struct sk_buff *); | |
1da177e4 LT |
569 | |
570 | /* destination address check */ | |
571 | if (sin6) { | |
572 | if (addr_len < offsetof(struct sockaddr, sa_data)) | |
573 | return -EINVAL; | |
574 | ||
575 | switch (sin6->sin6_family) { | |
576 | case AF_INET6: | |
577 | if (addr_len < SIN6_LEN_RFC2133) | |
578 | return -EINVAL; | |
579 | daddr = &sin6->sin6_addr; | |
580 | break; | |
581 | case AF_INET: | |
582 | goto do_udp_sendmsg; | |
583 | case AF_UNSPEC: | |
584 | msg->msg_name = sin6 = NULL; | |
585 | msg->msg_namelen = addr_len = 0; | |
586 | daddr = NULL; | |
587 | break; | |
588 | default: | |
589 | return -EINVAL; | |
590 | } | |
591 | } else if (!up->pending) { | |
592 | if (sk->sk_state != TCP_ESTABLISHED) | |
593 | return -EDESTADDRREQ; | |
594 | daddr = &np->daddr; | |
595 | } else | |
596 | daddr = NULL; | |
597 | ||
598 | if (daddr) { | |
599 | if (ipv6_addr_type(daddr) == IPV6_ADDR_MAPPED) { | |
600 | struct sockaddr_in sin; | |
601 | sin.sin_family = AF_INET; | |
602 | sin.sin_port = sin6 ? sin6->sin6_port : inet->dport; | |
603 | sin.sin_addr.s_addr = daddr->s6_addr32[3]; | |
604 | msg->msg_name = &sin; | |
605 | msg->msg_namelen = sizeof(sin); | |
606 | do_udp_sendmsg: | |
607 | if (__ipv6_only_sock(sk)) | |
608 | return -ENETUNREACH; | |
609 | return udp_sendmsg(iocb, sk, msg, len); | |
610 | } | |
611 | } | |
612 | ||
613 | if (up->pending == AF_INET) | |
614 | return udp_sendmsg(iocb, sk, msg, len); | |
615 | ||
616 | /* Rough check on arithmetic overflow, | |
617 | better check is made in ip6_build_xmit | |
618 | */ | |
619 | if (len > INT_MAX - sizeof(struct udphdr)) | |
620 | return -EMSGSIZE; | |
621 | ||
622 | if (up->pending) { | |
623 | /* | |
624 | * There are pending frames. | |
625 | * The socket lock must be held while it's corked. | |
626 | */ | |
627 | lock_sock(sk); | |
628 | if (likely(up->pending)) { | |
629 | if (unlikely(up->pending != AF_INET6)) { | |
630 | release_sock(sk); | |
631 | return -EAFNOSUPPORT; | |
632 | } | |
633 | dst = NULL; | |
634 | goto do_append_data; | |
635 | } | |
636 | release_sock(sk); | |
637 | } | |
638 | ulen += sizeof(struct udphdr); | |
639 | ||
132a55f3 | 640 | memset(&fl, 0, sizeof(fl)); |
1da177e4 LT |
641 | |
642 | if (sin6) { | |
643 | if (sin6->sin6_port == 0) | |
644 | return -EINVAL; | |
645 | ||
132a55f3 | 646 | fl.fl_ip_dport = sin6->sin6_port; |
1da177e4 LT |
647 | daddr = &sin6->sin6_addr; |
648 | ||
649 | if (np->sndflow) { | |
132a55f3 HX |
650 | fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK; |
651 | if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) { | |
652 | flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel); | |
1da177e4 LT |
653 | if (flowlabel == NULL) |
654 | return -EINVAL; | |
655 | daddr = &flowlabel->dst; | |
656 | } | |
657 | } | |
658 | ||
659 | /* | |
660 | * Otherwise it will be difficult to maintain | |
661 | * sk->sk_dst_cache. | |
662 | */ | |
663 | if (sk->sk_state == TCP_ESTABLISHED && | |
664 | ipv6_addr_equal(daddr, &np->daddr)) | |
665 | daddr = &np->daddr; | |
666 | ||
667 | if (addr_len >= sizeof(struct sockaddr_in6) && | |
668 | sin6->sin6_scope_id && | |
669 | ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL) | |
132a55f3 | 670 | fl.oif = sin6->sin6_scope_id; |
1da177e4 LT |
671 | } else { |
672 | if (sk->sk_state != TCP_ESTABLISHED) | |
673 | return -EDESTADDRREQ; | |
674 | ||
132a55f3 | 675 | fl.fl_ip_dport = inet->dport; |
1da177e4 | 676 | daddr = &np->daddr; |
132a55f3 | 677 | fl.fl6_flowlabel = np->flow_label; |
987905de | 678 | connected = 1; |
1da177e4 LT |
679 | } |
680 | ||
132a55f3 HX |
681 | if (!fl.oif) |
682 | fl.oif = sk->sk_bound_dev_if; | |
1da177e4 LT |
683 | |
684 | if (msg->msg_controllen) { | |
685 | opt = &opt_space; | |
686 | memset(opt, 0, sizeof(struct ipv6_txoptions)); | |
687 | opt->tot_len = sizeof(*opt); | |
688 | ||
132a55f3 | 689 | err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass); |
1da177e4 LT |
690 | if (err < 0) { |
691 | fl6_sock_release(flowlabel); | |
692 | return err; | |
693 | } | |
132a55f3 HX |
694 | if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) { |
695 | flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel); | |
1da177e4 LT |
696 | if (flowlabel == NULL) |
697 | return -EINVAL; | |
698 | } | |
699 | if (!(opt->opt_nflen|opt->opt_flen)) | |
700 | opt = NULL; | |
987905de | 701 | connected = 0; |
1da177e4 LT |
702 | } |
703 | if (opt == NULL) | |
704 | opt = np->opt; | |
df9890c3 YH |
705 | if (flowlabel) |
706 | opt = fl6_merge_options(&opt_space, flowlabel, opt); | |
707 | opt = ipv6_fixup_options(&opt_space, opt); | |
1da177e4 | 708 | |
ba4e58ec | 709 | fl.proto = sk->sk_protocol; |
132a55f3 HX |
710 | ipv6_addr_copy(&fl.fl6_dst, daddr); |
711 | if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr)) | |
712 | ipv6_addr_copy(&fl.fl6_src, &np->saddr); | |
713 | fl.fl_ip_sport = inet->sport; | |
1da177e4 LT |
714 | |
715 | /* merge ip6_build_xmit from ip6_output */ | |
716 | if (opt && opt->srcrt) { | |
717 | struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt; | |
132a55f3 HX |
718 | ipv6_addr_copy(&final, &fl.fl6_dst); |
719 | ipv6_addr_copy(&fl.fl6_dst, rt0->addr); | |
1da177e4 | 720 | final_p = &final; |
987905de | 721 | connected = 0; |
1da177e4 LT |
722 | } |
723 | ||
132a55f3 HX |
724 | if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst)) { |
725 | fl.oif = np->mcast_oif; | |
987905de MK |
726 | connected = 0; |
727 | } | |
1da177e4 | 728 | |
132a55f3 | 729 | security_sk_classify_flow(sk, &fl); |
beb8d13b | 730 | |
132a55f3 | 731 | err = ip6_sk_dst_lookup(sk, &dst, &fl); |
1da177e4 LT |
732 | if (err) |
733 | goto out; | |
734 | if (final_p) | |
132a55f3 | 735 | ipv6_addr_copy(&fl.fl6_dst, final_p); |
1da177e4 | 736 | |
132a55f3 | 737 | if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) |
1da177e4 | 738 | goto out; |
1da177e4 LT |
739 | |
740 | if (hlimit < 0) { | |
132a55f3 | 741 | if (ipv6_addr_is_multicast(&fl.fl6_dst)) |
1da177e4 LT |
742 | hlimit = np->mcast_hops; |
743 | else | |
744 | hlimit = np->hop_limit; | |
745 | if (hlimit < 0) | |
746 | hlimit = dst_metric(dst, RTAX_HOPLIMIT); | |
747 | if (hlimit < 0) | |
748 | hlimit = ipv6_get_hoplimit(dst->dev); | |
749 | } | |
750 | ||
41a1f8ea YH |
751 | if (tclass < 0) { |
752 | tclass = np->tclass; | |
753 | if (tclass < 0) | |
754 | tclass = 0; | |
755 | } | |
756 | ||
1da177e4 LT |
757 | if (msg->msg_flags&MSG_CONFIRM) |
758 | goto do_confirm; | |
759 | back_from_confirm: | |
760 | ||
761 | lock_sock(sk); | |
762 | if (unlikely(up->pending)) { | |
763 | /* The socket is already corked while preparing it. */ | |
764 | /* ... which is an evident application bug. --ANK */ | |
765 | release_sock(sk); | |
766 | ||
64ce2073 | 767 | LIMIT_NETDEBUG(KERN_DEBUG "udp cork app bug 2\n"); |
1da177e4 LT |
768 | err = -EINVAL; |
769 | goto out; | |
770 | } | |
771 | ||
772 | up->pending = AF_INET6; | |
773 | ||
774 | do_append_data: | |
775 | up->len += ulen; | |
ba4e58ec GR |
776 | getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag; |
777 | err = ip6_append_data(sk, getfrag, msg->msg_iov, ulen, | |
132a55f3 | 778 | sizeof(struct udphdr), hlimit, tclass, opt, &fl, |
41a1f8ea YH |
779 | (struct rt6_info*)dst, |
780 | corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags); | |
1da177e4 LT |
781 | if (err) |
782 | udp_v6_flush_pending_frames(sk); | |
783 | else if (!corkreq) | |
784 | err = udp_v6_push_pending_frames(sk, up); | |
1e0c14f4 HX |
785 | else if (unlikely(skb_queue_empty(&sk->sk_write_queue))) |
786 | up->pending = 0; | |
1da177e4 | 787 | |
a5e7c210 DM |
788 | if (dst) { |
789 | if (connected) { | |
790 | ip6_dst_store(sk, dst, | |
132a55f3 | 791 | ipv6_addr_equal(&fl.fl6_dst, &np->daddr) ? |
8e1ef0a9 YH |
792 | &np->daddr : NULL, |
793 | #ifdef CONFIG_IPV6_SUBTREES | |
132a55f3 | 794 | ipv6_addr_equal(&fl.fl6_src, &np->saddr) ? |
8e1ef0a9 YH |
795 | &np->saddr : |
796 | #endif | |
797 | NULL); | |
a5e7c210 DM |
798 | } else { |
799 | dst_release(dst); | |
800 | } | |
801 | } | |
802 | ||
1da177e4 LT |
803 | if (err > 0) |
804 | err = np->recverr ? net_xmit_errno(err) : 0; | |
805 | release_sock(sk); | |
806 | out: | |
807 | fl6_sock_release(flowlabel); | |
808 | if (!err) { | |
ba4e58ec | 809 | UDP6_INC_STATS_USER(UDP_MIB_OUTDATAGRAMS, is_udplite); |
1da177e4 LT |
810 | return len; |
811 | } | |
a18135eb DM |
812 | /* |
813 | * ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space. Reporting | |
814 | * ENOBUFS might not be good (it's not tunable per se), but otherwise | |
815 | * we don't have a good statistic (IpOutDiscards but it can be too many | |
816 | * things). We could add another new stat but at least for now that | |
817 | * seems like overkill. | |
818 | */ | |
819 | if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) { | |
ba4e58ec | 820 | UDP6_INC_STATS_USER(UDP_MIB_SNDBUFERRORS, is_udplite); |
a18135eb | 821 | } |
1da177e4 LT |
822 | return err; |
823 | ||
824 | do_confirm: | |
825 | dst_confirm(dst); | |
826 | if (!(msg->msg_flags&MSG_PROBE) || len) | |
827 | goto back_from_confirm; | |
828 | err = 0; | |
829 | goto out; | |
830 | } | |
831 | ||
ba4e58ec | 832 | int udpv6_destroy_sock(struct sock *sk) |
1da177e4 LT |
833 | { |
834 | lock_sock(sk); | |
835 | udp_v6_flush_pending_frames(sk); | |
836 | release_sock(sk); | |
837 | ||
838 | inet6_destroy_sock(sk); | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
843 | /* | |
844 | * Socket option code for UDP | |
845 | */ | |
3fdadf7d | 846 | static int do_udpv6_setsockopt(struct sock *sk, int level, int optname, |
1da177e4 LT |
847 | char __user *optval, int optlen) |
848 | { | |
849 | struct udp_sock *up = udp_sk(sk); | |
850 | int val; | |
851 | int err = 0; | |
852 | ||
1da177e4 LT |
853 | if(optlen<sizeof(int)) |
854 | return -EINVAL; | |
855 | ||
856 | if (get_user(val, (int __user *)optval)) | |
857 | return -EFAULT; | |
858 | ||
859 | switch(optname) { | |
860 | case UDP_CORK: | |
861 | if (val != 0) { | |
862 | up->corkflag = 1; | |
863 | } else { | |
864 | up->corkflag = 0; | |
865 | lock_sock(sk); | |
866 | udp_v6_push_pending_frames(sk, up); | |
867 | release_sock(sk); | |
868 | } | |
869 | break; | |
1da177e4 LT |
870 | case UDP_ENCAP: |
871 | switch (val) { | |
872 | case 0: | |
873 | up->encap_type = val; | |
874 | break; | |
875 | default: | |
876 | err = -ENOPROTOOPT; | |
877 | break; | |
878 | } | |
879 | break; | |
880 | ||
ba4e58ec GR |
881 | case UDPLITE_SEND_CSCOV: |
882 | if (!up->pcflag) /* Disable the option on UDP sockets */ | |
883 | return -ENOPROTOOPT; | |
884 | if (val != 0 && val < 8) /* Illegal coverage: use default (8) */ | |
885 | val = 8; | |
886 | up->pcslen = val; | |
887 | up->pcflag |= UDPLITE_SEND_CC; | |
888 | break; | |
889 | ||
890 | case UDPLITE_RECV_CSCOV: | |
891 | if (!up->pcflag) /* Disable the option on UDP sockets */ | |
892 | return -ENOPROTOOPT; | |
893 | if (val != 0 && val < 8) /* Avoid silly minimal values. */ | |
894 | val = 8; | |
895 | up->pcrlen = val; | |
896 | up->pcflag |= UDPLITE_RECV_CC; | |
897 | break; | |
898 | ||
1da177e4 LT |
899 | default: |
900 | err = -ENOPROTOOPT; | |
901 | break; | |
902 | }; | |
903 | ||
904 | return err; | |
905 | } | |
906 | ||
ba4e58ec GR |
907 | int udpv6_setsockopt(struct sock *sk, int level, int optname, |
908 | char __user *optval, int optlen) | |
3fdadf7d | 909 | { |
ba4e58ec GR |
910 | if (level == SOL_UDP || level == SOL_UDPLITE) |
911 | return do_udpv6_setsockopt(sk, level, optname, optval, optlen); | |
912 | return ipv6_setsockopt(sk, level, optname, optval, optlen); | |
3fdadf7d DM |
913 | } |
914 | ||
915 | #ifdef CONFIG_COMPAT | |
ba4e58ec GR |
916 | int compat_udpv6_setsockopt(struct sock *sk, int level, int optname, |
917 | char __user *optval, int optlen) | |
3fdadf7d | 918 | { |
ba4e58ec GR |
919 | if (level == SOL_UDP || level == SOL_UDPLITE) |
920 | return do_udpv6_setsockopt(sk, level, optname, optval, optlen); | |
921 | return compat_ipv6_setsockopt(sk, level, optname, optval, optlen); | |
3fdadf7d DM |
922 | } |
923 | #endif | |
924 | ||
925 | static int do_udpv6_getsockopt(struct sock *sk, int level, int optname, | |
1da177e4 LT |
926 | char __user *optval, int __user *optlen) |
927 | { | |
928 | struct udp_sock *up = udp_sk(sk); | |
929 | int val, len; | |
930 | ||
1da177e4 LT |
931 | if(get_user(len,optlen)) |
932 | return -EFAULT; | |
933 | ||
934 | len = min_t(unsigned int, len, sizeof(int)); | |
935 | ||
936 | if(len < 0) | |
937 | return -EINVAL; | |
938 | ||
939 | switch(optname) { | |
940 | case UDP_CORK: | |
941 | val = up->corkflag; | |
942 | break; | |
943 | ||
944 | case UDP_ENCAP: | |
945 | val = up->encap_type; | |
946 | break; | |
947 | ||
ba4e58ec GR |
948 | case UDPLITE_SEND_CSCOV: |
949 | val = up->pcslen; | |
950 | break; | |
951 | ||
952 | case UDPLITE_RECV_CSCOV: | |
953 | val = up->pcrlen; | |
954 | break; | |
955 | ||
1da177e4 LT |
956 | default: |
957 | return -ENOPROTOOPT; | |
958 | }; | |
959 | ||
960 | if(put_user(len, optlen)) | |
961 | return -EFAULT; | |
962 | if(copy_to_user(optval, &val,len)) | |
963 | return -EFAULT; | |
964 | return 0; | |
965 | } | |
966 | ||
ba4e58ec GR |
967 | int udpv6_getsockopt(struct sock *sk, int level, int optname, |
968 | char __user *optval, int __user *optlen) | |
3fdadf7d | 969 | { |
ba4e58ec GR |
970 | if (level == SOL_UDP || level == SOL_UDPLITE) |
971 | return do_udpv6_getsockopt(sk, level, optname, optval, optlen); | |
972 | return ipv6_getsockopt(sk, level, optname, optval, optlen); | |
3fdadf7d DM |
973 | } |
974 | ||
975 | #ifdef CONFIG_COMPAT | |
ba4e58ec GR |
976 | int compat_udpv6_getsockopt(struct sock *sk, int level, int optname, |
977 | char __user *optval, int __user *optlen) | |
3fdadf7d | 978 | { |
ba4e58ec GR |
979 | if (level == SOL_UDP || level == SOL_UDPLITE) |
980 | return do_udpv6_getsockopt(sk, level, optname, optval, optlen); | |
981 | return compat_ipv6_getsockopt(sk, level, optname, optval, optlen); | |
3fdadf7d DM |
982 | } |
983 | #endif | |
984 | ||
1da177e4 LT |
985 | static struct inet6_protocol udpv6_protocol = { |
986 | .handler = udpv6_rcv, | |
987 | .err_handler = udpv6_err, | |
988 | .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, | |
989 | }; | |
990 | ||
991 | /* ------------------------------------------------------------------------ */ | |
992 | #ifdef CONFIG_PROC_FS | |
993 | ||
994 | static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket) | |
995 | { | |
996 | struct inet_sock *inet = inet_sk(sp); | |
997 | struct ipv6_pinfo *np = inet6_sk(sp); | |
998 | struct in6_addr *dest, *src; | |
999 | __u16 destp, srcp; | |
1000 | ||
1001 | dest = &np->daddr; | |
1002 | src = &np->rcv_saddr; | |
1003 | destp = ntohs(inet->dport); | |
1004 | srcp = ntohs(inet->sport); | |
1005 | seq_printf(seq, | |
1006 | "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X " | |
1007 | "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n", | |
1008 | bucket, | |
1009 | src->s6_addr32[0], src->s6_addr32[1], | |
1010 | src->s6_addr32[2], src->s6_addr32[3], srcp, | |
1011 | dest->s6_addr32[0], dest->s6_addr32[1], | |
1012 | dest->s6_addr32[2], dest->s6_addr32[3], destp, | |
1013 | sp->sk_state, | |
1014 | atomic_read(&sp->sk_wmem_alloc), | |
1015 | atomic_read(&sp->sk_rmem_alloc), | |
1016 | 0, 0L, 0, | |
1017 | sock_i_uid(sp), 0, | |
1018 | sock_i_ino(sp), | |
1019 | atomic_read(&sp->sk_refcnt), sp); | |
1020 | } | |
1021 | ||
ba4e58ec | 1022 | int udp6_seq_show(struct seq_file *seq, void *v) |
1da177e4 LT |
1023 | { |
1024 | if (v == SEQ_START_TOKEN) | |
1025 | seq_printf(seq, | |
1026 | " sl " | |
1027 | "local_address " | |
1028 | "remote_address " | |
1029 | "st tx_queue rx_queue tr tm->when retrnsmt" | |
1030 | " uid timeout inode\n"); | |
1031 | else | |
1032 | udp6_sock_seq_show(seq, v, ((struct udp_iter_state *)seq->private)->bucket); | |
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | static struct file_operations udp6_seq_fops; | |
1037 | static struct udp_seq_afinfo udp6_seq_afinfo = { | |
1038 | .owner = THIS_MODULE, | |
1039 | .name = "udp6", | |
1040 | .family = AF_INET6, | |
ba4e58ec | 1041 | .hashtable = udp_hash, |
1da177e4 LT |
1042 | .seq_show = udp6_seq_show, |
1043 | .seq_fops = &udp6_seq_fops, | |
1044 | }; | |
1045 | ||
1046 | int __init udp6_proc_init(void) | |
1047 | { | |
1048 | return udp_proc_register(&udp6_seq_afinfo); | |
1049 | } | |
1050 | ||
1051 | void udp6_proc_exit(void) { | |
1052 | udp_proc_unregister(&udp6_seq_afinfo); | |
1053 | } | |
1054 | #endif /* CONFIG_PROC_FS */ | |
1055 | ||
1056 | /* ------------------------------------------------------------------------ */ | |
1057 | ||
1058 | struct proto udpv6_prot = { | |
543d9cfe ACM |
1059 | .name = "UDPv6", |
1060 | .owner = THIS_MODULE, | |
ba4e58ec | 1061 | .close = udp_lib_close, |
543d9cfe ACM |
1062 | .connect = ip6_datagram_connect, |
1063 | .disconnect = udp_disconnect, | |
1064 | .ioctl = udp_ioctl, | |
1065 | .destroy = udpv6_destroy_sock, | |
1066 | .setsockopt = udpv6_setsockopt, | |
1067 | .getsockopt = udpv6_getsockopt, | |
1068 | .sendmsg = udpv6_sendmsg, | |
1069 | .recvmsg = udpv6_recvmsg, | |
1070 | .backlog_rcv = udpv6_queue_rcv_skb, | |
ba4e58ec GR |
1071 | .hash = udp_lib_hash, |
1072 | .unhash = udp_lib_unhash, | |
543d9cfe ACM |
1073 | .get_port = udp_v6_get_port, |
1074 | .obj_size = sizeof(struct udp6_sock), | |
3fdadf7d | 1075 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
1076 | .compat_setsockopt = compat_udpv6_setsockopt, |
1077 | .compat_getsockopt = compat_udpv6_getsockopt, | |
3fdadf7d | 1078 | #endif |
1da177e4 LT |
1079 | }; |
1080 | ||
1da177e4 LT |
1081 | static struct inet_protosw udpv6_protosw = { |
1082 | .type = SOCK_DGRAM, | |
1083 | .protocol = IPPROTO_UDP, | |
1084 | .prot = &udpv6_prot, | |
1085 | .ops = &inet6_dgram_ops, | |
1086 | .capability =-1, | |
1087 | .no_check = UDP_CSUM_DEFAULT, | |
1088 | .flags = INET_PROTOSW_PERMANENT, | |
1089 | }; | |
1090 | ||
1091 | ||
1092 | void __init udpv6_init(void) | |
1093 | { | |
1094 | if (inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP) < 0) | |
1095 | printk(KERN_ERR "udpv6_init: Could not register protocol\n"); | |
1096 | inet6_register_protosw(&udpv6_protosw); | |
1097 | } |