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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * PF_INET protocol family socket handler. | |
7 | * | |
8 | * Version: $Id: af_inet.c,v 1.137 2002/02/01 22:01:03 davem Exp $ | |
9 | * | |
02c30a84 | 10 | * Authors: Ross Biro |
1da177e4 LT |
11 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
12 | * Florian La Roche, <flla@stud.uni-sb.de> | |
13 | * Alan Cox, <A.Cox@swansea.ac.uk> | |
14 | * | |
15 | * Changes (see also sock.c) | |
16 | * | |
17 | * piggy, | |
18 | * Karl Knutson : Socket protocol table | |
19 | * A.N.Kuznetsov : Socket death error in accept(). | |
20 | * John Richardson : Fix non blocking error in connect() | |
21 | * so sockets that fail to connect | |
22 | * don't return -EINPROGRESS. | |
23 | * Alan Cox : Asynchronous I/O support | |
24 | * Alan Cox : Keep correct socket pointer on sock | |
25 | * structures | |
26 | * when accept() ed | |
27 | * Alan Cox : Semantics of SO_LINGER aren't state | |
28 | * moved to close when you look carefully. | |
29 | * With this fixed and the accept bug fixed | |
30 | * some RPC stuff seems happier. | |
31 | * Niibe Yutaka : 4.4BSD style write async I/O | |
32 | * Alan Cox, | |
33 | * Tony Gale : Fixed reuse semantics. | |
34 | * Alan Cox : bind() shouldn't abort existing but dead | |
35 | * sockets. Stops FTP netin:.. I hope. | |
36 | * Alan Cox : bind() works correctly for RAW sockets. | |
37 | * Note that FreeBSD at least was broken | |
38 | * in this respect so be careful with | |
39 | * compatibility tests... | |
40 | * Alan Cox : routing cache support | |
41 | * Alan Cox : memzero the socket structure for | |
42 | * compactness. | |
43 | * Matt Day : nonblock connect error handler | |
44 | * Alan Cox : Allow large numbers of pending sockets | |
45 | * (eg for big web sites), but only if | |
46 | * specifically application requested. | |
47 | * Alan Cox : New buffering throughout IP. Used | |
48 | * dumbly. | |
49 | * Alan Cox : New buffering now used smartly. | |
50 | * Alan Cox : BSD rather than common sense | |
51 | * interpretation of listen. | |
52 | * Germano Caronni : Assorted small races. | |
53 | * Alan Cox : sendmsg/recvmsg basic support. | |
54 | * Alan Cox : Only sendmsg/recvmsg now supported. | |
55 | * Alan Cox : Locked down bind (see security list). | |
56 | * Alan Cox : Loosened bind a little. | |
57 | * Mike McLagan : ADD/DEL DLCI Ioctls | |
58 | * Willy Konynenberg : Transparent proxying support. | |
59 | * David S. Miller : New socket lookup architecture. | |
60 | * Some other random speedups. | |
61 | * Cyrus Durgin : Cleaned up file for kmod hacks. | |
62 | * Andi Kleen : Fix inet_stream_connect TCP race. | |
63 | * | |
64 | * This program is free software; you can redistribute it and/or | |
65 | * modify it under the terms of the GNU General Public License | |
66 | * as published by the Free Software Foundation; either version | |
67 | * 2 of the License, or (at your option) any later version. | |
68 | */ | |
69 | ||
70 | #include <linux/config.h> | |
71 | #include <linux/errno.h> | |
72 | #include <linux/types.h> | |
73 | #include <linux/socket.h> | |
74 | #include <linux/in.h> | |
75 | #include <linux/kernel.h> | |
1da177e4 LT |
76 | #include <linux/module.h> |
77 | #include <linux/sched.h> | |
78 | #include <linux/timer.h> | |
79 | #include <linux/string.h> | |
80 | #include <linux/sockios.h> | |
81 | #include <linux/net.h> | |
82 | #include <linux/fcntl.h> | |
83 | #include <linux/mm.h> | |
84 | #include <linux/interrupt.h> | |
85 | #include <linux/stat.h> | |
86 | #include <linux/init.h> | |
87 | #include <linux/poll.h> | |
88 | #include <linux/netfilter_ipv4.h> | |
89 | ||
90 | #include <asm/uaccess.h> | |
91 | #include <asm/system.h> | |
92 | ||
93 | #include <linux/smp_lock.h> | |
94 | #include <linux/inet.h> | |
95 | #include <linux/igmp.h> | |
96 | #include <linux/netdevice.h> | |
97 | #include <net/ip.h> | |
98 | #include <net/protocol.h> | |
99 | #include <net/arp.h> | |
100 | #include <net/route.h> | |
101 | #include <net/ip_fib.h> | |
102 | #include <net/tcp.h> | |
103 | #include <net/udp.h> | |
104 | #include <linux/skbuff.h> | |
105 | #include <net/sock.h> | |
106 | #include <net/raw.h> | |
107 | #include <net/icmp.h> | |
108 | #include <net/ipip.h> | |
109 | #include <net/inet_common.h> | |
110 | #include <net/xfrm.h> | |
111 | #ifdef CONFIG_IP_MROUTE | |
112 | #include <linux/mroute.h> | |
113 | #endif | |
114 | ||
115 | DEFINE_SNMP_STAT(struct linux_mib, net_statistics); | |
116 | ||
1da177e4 LT |
117 | extern void ip_mc_drop_socket(struct sock *sk); |
118 | ||
119 | /* The inetsw table contains everything that inet_create needs to | |
120 | * build a new socket. | |
121 | */ | |
122 | static struct list_head inetsw[SOCK_MAX]; | |
123 | static DEFINE_SPINLOCK(inetsw_lock); | |
124 | ||
125 | /* New destruction routine */ | |
126 | ||
127 | void inet_sock_destruct(struct sock *sk) | |
128 | { | |
129 | struct inet_sock *inet = inet_sk(sk); | |
130 | ||
131 | __skb_queue_purge(&sk->sk_receive_queue); | |
132 | __skb_queue_purge(&sk->sk_error_queue); | |
133 | ||
134 | if (sk->sk_type == SOCK_STREAM && sk->sk_state != TCP_CLOSE) { | |
135 | printk("Attempt to release TCP socket in state %d %p\n", | |
136 | sk->sk_state, sk); | |
137 | return; | |
138 | } | |
139 | if (!sock_flag(sk, SOCK_DEAD)) { | |
140 | printk("Attempt to release alive inet socket %p\n", sk); | |
141 | return; | |
142 | } | |
143 | ||
144 | BUG_TRAP(!atomic_read(&sk->sk_rmem_alloc)); | |
145 | BUG_TRAP(!atomic_read(&sk->sk_wmem_alloc)); | |
146 | BUG_TRAP(!sk->sk_wmem_queued); | |
147 | BUG_TRAP(!sk->sk_forward_alloc); | |
148 | ||
149 | if (inet->opt) | |
150 | kfree(inet->opt); | |
151 | dst_release(sk->sk_dst_cache); | |
e6848976 | 152 | sk_refcnt_debug_dec(sk); |
1da177e4 LT |
153 | } |
154 | ||
155 | /* | |
156 | * The routines beyond this point handle the behaviour of an AF_INET | |
157 | * socket object. Mostly it punts to the subprotocols of IP to do | |
158 | * the work. | |
159 | */ | |
160 | ||
161 | /* | |
162 | * Automatically bind an unbound socket. | |
163 | */ | |
164 | ||
165 | static int inet_autobind(struct sock *sk) | |
166 | { | |
167 | struct inet_sock *inet; | |
168 | /* We may need to bind the socket. */ | |
169 | lock_sock(sk); | |
170 | inet = inet_sk(sk); | |
171 | if (!inet->num) { | |
172 | if (sk->sk_prot->get_port(sk, 0)) { | |
173 | release_sock(sk); | |
174 | return -EAGAIN; | |
175 | } | |
176 | inet->sport = htons(inet->num); | |
177 | } | |
178 | release_sock(sk); | |
179 | return 0; | |
180 | } | |
181 | ||
182 | /* | |
183 | * Move a socket into listening state. | |
184 | */ | |
185 | int inet_listen(struct socket *sock, int backlog) | |
186 | { | |
187 | struct sock *sk = sock->sk; | |
188 | unsigned char old_state; | |
189 | int err; | |
190 | ||
191 | lock_sock(sk); | |
192 | ||
193 | err = -EINVAL; | |
194 | if (sock->state != SS_UNCONNECTED || sock->type != SOCK_STREAM) | |
195 | goto out; | |
196 | ||
197 | old_state = sk->sk_state; | |
198 | if (!((1 << old_state) & (TCPF_CLOSE | TCPF_LISTEN))) | |
199 | goto out; | |
200 | ||
201 | /* Really, if the socket is already in listen state | |
202 | * we can only allow the backlog to be adjusted. | |
203 | */ | |
204 | if (old_state != TCP_LISTEN) { | |
205 | err = tcp_listen_start(sk); | |
206 | if (err) | |
207 | goto out; | |
208 | } | |
209 | sk->sk_max_ack_backlog = backlog; | |
210 | err = 0; | |
211 | ||
212 | out: | |
213 | release_sock(sk); | |
214 | return err; | |
215 | } | |
216 | ||
217 | /* | |
218 | * Create an inet socket. | |
219 | */ | |
220 | ||
221 | static int inet_create(struct socket *sock, int protocol) | |
222 | { | |
223 | struct sock *sk; | |
224 | struct list_head *p; | |
225 | struct inet_protosw *answer; | |
226 | struct inet_sock *inet; | |
227 | struct proto *answer_prot; | |
228 | unsigned char answer_flags; | |
229 | char answer_no_check; | |
230 | int err; | |
231 | ||
232 | sock->state = SS_UNCONNECTED; | |
233 | ||
234 | /* Look for the requested type/protocol pair. */ | |
235 | answer = NULL; | |
236 | rcu_read_lock(); | |
237 | list_for_each_rcu(p, &inetsw[sock->type]) { | |
238 | answer = list_entry(p, struct inet_protosw, list); | |
239 | ||
240 | /* Check the non-wild match. */ | |
241 | if (protocol == answer->protocol) { | |
242 | if (protocol != IPPROTO_IP) | |
243 | break; | |
244 | } else { | |
245 | /* Check for the two wild cases. */ | |
246 | if (IPPROTO_IP == protocol) { | |
247 | protocol = answer->protocol; | |
248 | break; | |
249 | } | |
250 | if (IPPROTO_IP == answer->protocol) | |
251 | break; | |
252 | } | |
253 | answer = NULL; | |
254 | } | |
255 | ||
256 | err = -ESOCKTNOSUPPORT; | |
257 | if (!answer) | |
258 | goto out_rcu_unlock; | |
259 | err = -EPERM; | |
260 | if (answer->capability > 0 && !capable(answer->capability)) | |
261 | goto out_rcu_unlock; | |
262 | err = -EPROTONOSUPPORT; | |
263 | if (!protocol) | |
264 | goto out_rcu_unlock; | |
265 | ||
266 | sock->ops = answer->ops; | |
267 | answer_prot = answer->prot; | |
268 | answer_no_check = answer->no_check; | |
269 | answer_flags = answer->flags; | |
270 | rcu_read_unlock(); | |
271 | ||
272 | BUG_TRAP(answer_prot->slab != NULL); | |
273 | ||
274 | err = -ENOBUFS; | |
275 | sk = sk_alloc(PF_INET, GFP_KERNEL, answer_prot, 1); | |
276 | if (sk == NULL) | |
277 | goto out; | |
278 | ||
279 | err = 0; | |
280 | sk->sk_no_check = answer_no_check; | |
281 | if (INET_PROTOSW_REUSE & answer_flags) | |
282 | sk->sk_reuse = 1; | |
283 | ||
284 | inet = inet_sk(sk); | |
285 | ||
286 | if (SOCK_RAW == sock->type) { | |
287 | inet->num = protocol; | |
288 | if (IPPROTO_RAW == protocol) | |
289 | inet->hdrincl = 1; | |
290 | } | |
291 | ||
292 | if (ipv4_config.no_pmtu_disc) | |
293 | inet->pmtudisc = IP_PMTUDISC_DONT; | |
294 | else | |
295 | inet->pmtudisc = IP_PMTUDISC_WANT; | |
296 | ||
297 | inet->id = 0; | |
298 | ||
299 | sock_init_data(sock, sk); | |
300 | ||
301 | sk->sk_destruct = inet_sock_destruct; | |
302 | sk->sk_family = PF_INET; | |
303 | sk->sk_protocol = protocol; | |
304 | sk->sk_backlog_rcv = sk->sk_prot->backlog_rcv; | |
305 | ||
306 | inet->uc_ttl = -1; | |
307 | inet->mc_loop = 1; | |
308 | inet->mc_ttl = 1; | |
309 | inet->mc_index = 0; | |
310 | inet->mc_list = NULL; | |
311 | ||
e6848976 | 312 | sk_refcnt_debug_inc(sk); |
1da177e4 LT |
313 | |
314 | if (inet->num) { | |
315 | /* It assumes that any protocol which allows | |
316 | * the user to assign a number at socket | |
317 | * creation time automatically | |
318 | * shares. | |
319 | */ | |
320 | inet->sport = htons(inet->num); | |
321 | /* Add to protocol hash chains. */ | |
322 | sk->sk_prot->hash(sk); | |
323 | } | |
324 | ||
325 | if (sk->sk_prot->init) { | |
326 | err = sk->sk_prot->init(sk); | |
327 | if (err) | |
328 | sk_common_release(sk); | |
329 | } | |
330 | out: | |
331 | return err; | |
332 | out_rcu_unlock: | |
333 | rcu_read_unlock(); | |
334 | goto out; | |
335 | } | |
336 | ||
337 | ||
338 | /* | |
339 | * The peer socket should always be NULL (or else). When we call this | |
340 | * function we are destroying the object and from then on nobody | |
341 | * should refer to it. | |
342 | */ | |
343 | int inet_release(struct socket *sock) | |
344 | { | |
345 | struct sock *sk = sock->sk; | |
346 | ||
347 | if (sk) { | |
348 | long timeout; | |
349 | ||
350 | /* Applications forget to leave groups before exiting */ | |
351 | ip_mc_drop_socket(sk); | |
352 | ||
353 | /* If linger is set, we don't return until the close | |
354 | * is complete. Otherwise we return immediately. The | |
355 | * actually closing is done the same either way. | |
356 | * | |
357 | * If the close is due to the process exiting, we never | |
358 | * linger.. | |
359 | */ | |
360 | timeout = 0; | |
361 | if (sock_flag(sk, SOCK_LINGER) && | |
362 | !(current->flags & PF_EXITING)) | |
363 | timeout = sk->sk_lingertime; | |
364 | sock->sk = NULL; | |
365 | sk->sk_prot->close(sk, timeout); | |
366 | } | |
367 | return 0; | |
368 | } | |
369 | ||
370 | /* It is off by default, see below. */ | |
371 | int sysctl_ip_nonlocal_bind; | |
372 | ||
373 | int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
374 | { | |
375 | struct sockaddr_in *addr = (struct sockaddr_in *)uaddr; | |
376 | struct sock *sk = sock->sk; | |
377 | struct inet_sock *inet = inet_sk(sk); | |
378 | unsigned short snum; | |
379 | int chk_addr_ret; | |
380 | int err; | |
381 | ||
382 | /* If the socket has its own bind function then use it. (RAW) */ | |
383 | if (sk->sk_prot->bind) { | |
384 | err = sk->sk_prot->bind(sk, uaddr, addr_len); | |
385 | goto out; | |
386 | } | |
387 | err = -EINVAL; | |
388 | if (addr_len < sizeof(struct sockaddr_in)) | |
389 | goto out; | |
390 | ||
391 | chk_addr_ret = inet_addr_type(addr->sin_addr.s_addr); | |
392 | ||
393 | /* Not specified by any standard per-se, however it breaks too | |
394 | * many applications when removed. It is unfortunate since | |
395 | * allowing applications to make a non-local bind solves | |
396 | * several problems with systems using dynamic addressing. | |
397 | * (ie. your servers still start up even if your ISDN link | |
398 | * is temporarily down) | |
399 | */ | |
400 | err = -EADDRNOTAVAIL; | |
401 | if (!sysctl_ip_nonlocal_bind && | |
402 | !inet->freebind && | |
403 | addr->sin_addr.s_addr != INADDR_ANY && | |
404 | chk_addr_ret != RTN_LOCAL && | |
405 | chk_addr_ret != RTN_MULTICAST && | |
406 | chk_addr_ret != RTN_BROADCAST) | |
407 | goto out; | |
408 | ||
409 | snum = ntohs(addr->sin_port); | |
410 | err = -EACCES; | |
411 | if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
412 | goto out; | |
413 | ||
414 | /* We keep a pair of addresses. rcv_saddr is the one | |
415 | * used by hash lookups, and saddr is used for transmit. | |
416 | * | |
417 | * In the BSD API these are the same except where it | |
418 | * would be illegal to use them (multicast/broadcast) in | |
419 | * which case the sending device address is used. | |
420 | */ | |
421 | lock_sock(sk); | |
422 | ||
423 | /* Check these errors (active socket, double bind). */ | |
424 | err = -EINVAL; | |
425 | if (sk->sk_state != TCP_CLOSE || inet->num) | |
426 | goto out_release_sock; | |
427 | ||
428 | inet->rcv_saddr = inet->saddr = addr->sin_addr.s_addr; | |
429 | if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) | |
430 | inet->saddr = 0; /* Use device */ | |
431 | ||
432 | /* Make sure we are allowed to bind here. */ | |
433 | if (sk->sk_prot->get_port(sk, snum)) { | |
434 | inet->saddr = inet->rcv_saddr = 0; | |
435 | err = -EADDRINUSE; | |
436 | goto out_release_sock; | |
437 | } | |
438 | ||
439 | if (inet->rcv_saddr) | |
440 | sk->sk_userlocks |= SOCK_BINDADDR_LOCK; | |
441 | if (snum) | |
442 | sk->sk_userlocks |= SOCK_BINDPORT_LOCK; | |
443 | inet->sport = htons(inet->num); | |
444 | inet->daddr = 0; | |
445 | inet->dport = 0; | |
446 | sk_dst_reset(sk); | |
447 | err = 0; | |
448 | out_release_sock: | |
449 | release_sock(sk); | |
450 | out: | |
451 | return err; | |
452 | } | |
453 | ||
454 | int inet_dgram_connect(struct socket *sock, struct sockaddr * uaddr, | |
455 | int addr_len, int flags) | |
456 | { | |
457 | struct sock *sk = sock->sk; | |
458 | ||
459 | if (uaddr->sa_family == AF_UNSPEC) | |
460 | return sk->sk_prot->disconnect(sk, flags); | |
461 | ||
462 | if (!inet_sk(sk)->num && inet_autobind(sk)) | |
463 | return -EAGAIN; | |
464 | return sk->sk_prot->connect(sk, (struct sockaddr *)uaddr, addr_len); | |
465 | } | |
466 | ||
467 | static long inet_wait_for_connect(struct sock *sk, long timeo) | |
468 | { | |
469 | DEFINE_WAIT(wait); | |
470 | ||
471 | prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE); | |
472 | ||
473 | /* Basic assumption: if someone sets sk->sk_err, he _must_ | |
474 | * change state of the socket from TCP_SYN_*. | |
475 | * Connect() does not allow to get error notifications | |
476 | * without closing the socket. | |
477 | */ | |
478 | while ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) { | |
479 | release_sock(sk); | |
480 | timeo = schedule_timeout(timeo); | |
481 | lock_sock(sk); | |
482 | if (signal_pending(current) || !timeo) | |
483 | break; | |
484 | prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE); | |
485 | } | |
486 | finish_wait(sk->sk_sleep, &wait); | |
487 | return timeo; | |
488 | } | |
489 | ||
490 | /* | |
491 | * Connect to a remote host. There is regrettably still a little | |
492 | * TCP 'magic' in here. | |
493 | */ | |
494 | int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr, | |
495 | int addr_len, int flags) | |
496 | { | |
497 | struct sock *sk = sock->sk; | |
498 | int err; | |
499 | long timeo; | |
500 | ||
501 | lock_sock(sk); | |
502 | ||
503 | if (uaddr->sa_family == AF_UNSPEC) { | |
504 | err = sk->sk_prot->disconnect(sk, flags); | |
505 | sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED; | |
506 | goto out; | |
507 | } | |
508 | ||
509 | switch (sock->state) { | |
510 | default: | |
511 | err = -EINVAL; | |
512 | goto out; | |
513 | case SS_CONNECTED: | |
514 | err = -EISCONN; | |
515 | goto out; | |
516 | case SS_CONNECTING: | |
517 | err = -EALREADY; | |
518 | /* Fall out of switch with err, set for this state */ | |
519 | break; | |
520 | case SS_UNCONNECTED: | |
521 | err = -EISCONN; | |
522 | if (sk->sk_state != TCP_CLOSE) | |
523 | goto out; | |
524 | ||
525 | err = sk->sk_prot->connect(sk, uaddr, addr_len); | |
526 | if (err < 0) | |
527 | goto out; | |
528 | ||
529 | sock->state = SS_CONNECTING; | |
530 | ||
531 | /* Just entered SS_CONNECTING state; the only | |
532 | * difference is that return value in non-blocking | |
533 | * case is EINPROGRESS, rather than EALREADY. | |
534 | */ | |
535 | err = -EINPROGRESS; | |
536 | break; | |
537 | } | |
538 | ||
539 | timeo = sock_sndtimeo(sk, flags & O_NONBLOCK); | |
540 | ||
541 | if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) { | |
542 | /* Error code is set above */ | |
543 | if (!timeo || !inet_wait_for_connect(sk, timeo)) | |
544 | goto out; | |
545 | ||
546 | err = sock_intr_errno(timeo); | |
547 | if (signal_pending(current)) | |
548 | goto out; | |
549 | } | |
550 | ||
551 | /* Connection was closed by RST, timeout, ICMP error | |
552 | * or another process disconnected us. | |
553 | */ | |
554 | if (sk->sk_state == TCP_CLOSE) | |
555 | goto sock_error; | |
556 | ||
557 | /* sk->sk_err may be not zero now, if RECVERR was ordered by user | |
558 | * and error was received after socket entered established state. | |
559 | * Hence, it is handled normally after connect() return successfully. | |
560 | */ | |
561 | ||
562 | sock->state = SS_CONNECTED; | |
563 | err = 0; | |
564 | out: | |
565 | release_sock(sk); | |
566 | return err; | |
567 | ||
568 | sock_error: | |
569 | err = sock_error(sk) ? : -ECONNABORTED; | |
570 | sock->state = SS_UNCONNECTED; | |
571 | if (sk->sk_prot->disconnect(sk, flags)) | |
572 | sock->state = SS_DISCONNECTING; | |
573 | goto out; | |
574 | } | |
575 | ||
576 | /* | |
577 | * Accept a pending connection. The TCP layer now gives BSD semantics. | |
578 | */ | |
579 | ||
580 | int inet_accept(struct socket *sock, struct socket *newsock, int flags) | |
581 | { | |
582 | struct sock *sk1 = sock->sk; | |
583 | int err = -EINVAL; | |
584 | struct sock *sk2 = sk1->sk_prot->accept(sk1, flags, &err); | |
585 | ||
586 | if (!sk2) | |
587 | goto do_err; | |
588 | ||
589 | lock_sock(sk2); | |
590 | ||
591 | BUG_TRAP((1 << sk2->sk_state) & | |
592 | (TCPF_ESTABLISHED | TCPF_CLOSE_WAIT | TCPF_CLOSE)); | |
593 | ||
594 | sock_graft(sk2, newsock); | |
595 | ||
596 | newsock->state = SS_CONNECTED; | |
597 | err = 0; | |
598 | release_sock(sk2); | |
599 | do_err: | |
600 | return err; | |
601 | } | |
602 | ||
603 | ||
604 | /* | |
605 | * This does both peername and sockname. | |
606 | */ | |
607 | int inet_getname(struct socket *sock, struct sockaddr *uaddr, | |
608 | int *uaddr_len, int peer) | |
609 | { | |
610 | struct sock *sk = sock->sk; | |
611 | struct inet_sock *inet = inet_sk(sk); | |
612 | struct sockaddr_in *sin = (struct sockaddr_in *)uaddr; | |
613 | ||
614 | sin->sin_family = AF_INET; | |
615 | if (peer) { | |
616 | if (!inet->dport || | |
617 | (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && | |
618 | peer == 1)) | |
619 | return -ENOTCONN; | |
620 | sin->sin_port = inet->dport; | |
621 | sin->sin_addr.s_addr = inet->daddr; | |
622 | } else { | |
623 | __u32 addr = inet->rcv_saddr; | |
624 | if (!addr) | |
625 | addr = inet->saddr; | |
626 | sin->sin_port = inet->sport; | |
627 | sin->sin_addr.s_addr = addr; | |
628 | } | |
629 | memset(sin->sin_zero, 0, sizeof(sin->sin_zero)); | |
630 | *uaddr_len = sizeof(*sin); | |
631 | return 0; | |
632 | } | |
633 | ||
634 | int inet_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, | |
635 | size_t size) | |
636 | { | |
637 | struct sock *sk = sock->sk; | |
638 | ||
639 | /* We may need to bind the socket. */ | |
640 | if (!inet_sk(sk)->num && inet_autobind(sk)) | |
641 | return -EAGAIN; | |
642 | ||
643 | return sk->sk_prot->sendmsg(iocb, sk, msg, size); | |
644 | } | |
645 | ||
646 | ||
647 | static ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags) | |
648 | { | |
649 | struct sock *sk = sock->sk; | |
650 | ||
651 | /* We may need to bind the socket. */ | |
652 | if (!inet_sk(sk)->num && inet_autobind(sk)) | |
653 | return -EAGAIN; | |
654 | ||
655 | if (sk->sk_prot->sendpage) | |
656 | return sk->sk_prot->sendpage(sk, page, offset, size, flags); | |
657 | return sock_no_sendpage(sock, page, offset, size, flags); | |
658 | } | |
659 | ||
660 | ||
661 | int inet_shutdown(struct socket *sock, int how) | |
662 | { | |
663 | struct sock *sk = sock->sk; | |
664 | int err = 0; | |
665 | ||
666 | /* This should really check to make sure | |
667 | * the socket is a TCP socket. (WHY AC...) | |
668 | */ | |
669 | how++; /* maps 0->1 has the advantage of making bit 1 rcvs and | |
670 | 1->2 bit 2 snds. | |
671 | 2->3 */ | |
672 | if ((how & ~SHUTDOWN_MASK) || !how) /* MAXINT->0 */ | |
673 | return -EINVAL; | |
674 | ||
675 | lock_sock(sk); | |
676 | if (sock->state == SS_CONNECTING) { | |
677 | if ((1 << sk->sk_state) & | |
678 | (TCPF_SYN_SENT | TCPF_SYN_RECV | TCPF_CLOSE)) | |
679 | sock->state = SS_DISCONNECTING; | |
680 | else | |
681 | sock->state = SS_CONNECTED; | |
682 | } | |
683 | ||
684 | switch (sk->sk_state) { | |
685 | case TCP_CLOSE: | |
686 | err = -ENOTCONN; | |
687 | /* Hack to wake up other listeners, who can poll for | |
688 | POLLHUP, even on eg. unconnected UDP sockets -- RR */ | |
689 | default: | |
690 | sk->sk_shutdown |= how; | |
691 | if (sk->sk_prot->shutdown) | |
692 | sk->sk_prot->shutdown(sk, how); | |
693 | break; | |
694 | ||
695 | /* Remaining two branches are temporary solution for missing | |
696 | * close() in multithreaded environment. It is _not_ a good idea, | |
697 | * but we have no choice until close() is repaired at VFS level. | |
698 | */ | |
699 | case TCP_LISTEN: | |
700 | if (!(how & RCV_SHUTDOWN)) | |
701 | break; | |
702 | /* Fall through */ | |
703 | case TCP_SYN_SENT: | |
704 | err = sk->sk_prot->disconnect(sk, O_NONBLOCK); | |
705 | sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED; | |
706 | break; | |
707 | } | |
708 | ||
709 | /* Wake up anyone sleeping in poll. */ | |
710 | sk->sk_state_change(sk); | |
711 | release_sock(sk); | |
712 | return err; | |
713 | } | |
714 | ||
715 | /* | |
716 | * ioctl() calls you can issue on an INET socket. Most of these are | |
717 | * device configuration and stuff and very rarely used. Some ioctls | |
718 | * pass on to the socket itself. | |
719 | * | |
720 | * NOTE: I like the idea of a module for the config stuff. ie ifconfig | |
721 | * loads the devconfigure module does its configuring and unloads it. | |
722 | * There's a good 20K of config code hanging around the kernel. | |
723 | */ | |
724 | ||
725 | int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
726 | { | |
727 | struct sock *sk = sock->sk; | |
728 | int err = 0; | |
729 | ||
730 | switch (cmd) { | |
731 | case SIOCGSTAMP: | |
732 | err = sock_get_timestamp(sk, (struct timeval __user *)arg); | |
733 | break; | |
734 | case SIOCADDRT: | |
735 | case SIOCDELRT: | |
736 | case SIOCRTMSG: | |
737 | err = ip_rt_ioctl(cmd, (void __user *)arg); | |
738 | break; | |
739 | case SIOCDARP: | |
740 | case SIOCGARP: | |
741 | case SIOCSARP: | |
742 | err = arp_ioctl(cmd, (void __user *)arg); | |
743 | break; | |
744 | case SIOCGIFADDR: | |
745 | case SIOCSIFADDR: | |
746 | case SIOCGIFBRDADDR: | |
747 | case SIOCSIFBRDADDR: | |
748 | case SIOCGIFNETMASK: | |
749 | case SIOCSIFNETMASK: | |
750 | case SIOCGIFDSTADDR: | |
751 | case SIOCSIFDSTADDR: | |
752 | case SIOCSIFPFLAGS: | |
753 | case SIOCGIFPFLAGS: | |
754 | case SIOCSIFFLAGS: | |
755 | err = devinet_ioctl(cmd, (void __user *)arg); | |
756 | break; | |
757 | default: | |
758 | if (!sk->sk_prot->ioctl || | |
759 | (err = sk->sk_prot->ioctl(sk, cmd, arg)) == | |
760 | -ENOIOCTLCMD) | |
761 | err = dev_ioctl(cmd, (void __user *)arg); | |
762 | break; | |
763 | } | |
764 | return err; | |
765 | } | |
766 | ||
767 | struct proto_ops inet_stream_ops = { | |
768 | .family = PF_INET, | |
769 | .owner = THIS_MODULE, | |
770 | .release = inet_release, | |
771 | .bind = inet_bind, | |
772 | .connect = inet_stream_connect, | |
773 | .socketpair = sock_no_socketpair, | |
774 | .accept = inet_accept, | |
775 | .getname = inet_getname, | |
776 | .poll = tcp_poll, | |
777 | .ioctl = inet_ioctl, | |
778 | .listen = inet_listen, | |
779 | .shutdown = inet_shutdown, | |
780 | .setsockopt = sock_common_setsockopt, | |
781 | .getsockopt = sock_common_getsockopt, | |
782 | .sendmsg = inet_sendmsg, | |
783 | .recvmsg = sock_common_recvmsg, | |
784 | .mmap = sock_no_mmap, | |
785 | .sendpage = tcp_sendpage | |
786 | }; | |
787 | ||
788 | struct proto_ops inet_dgram_ops = { | |
789 | .family = PF_INET, | |
790 | .owner = THIS_MODULE, | |
791 | .release = inet_release, | |
792 | .bind = inet_bind, | |
793 | .connect = inet_dgram_connect, | |
794 | .socketpair = sock_no_socketpair, | |
795 | .accept = sock_no_accept, | |
796 | .getname = inet_getname, | |
797 | .poll = udp_poll, | |
798 | .ioctl = inet_ioctl, | |
799 | .listen = sock_no_listen, | |
800 | .shutdown = inet_shutdown, | |
801 | .setsockopt = sock_common_setsockopt, | |
802 | .getsockopt = sock_common_getsockopt, | |
803 | .sendmsg = inet_sendmsg, | |
804 | .recvmsg = sock_common_recvmsg, | |
805 | .mmap = sock_no_mmap, | |
806 | .sendpage = inet_sendpage, | |
807 | }; | |
808 | ||
809 | /* | |
810 | * For SOCK_RAW sockets; should be the same as inet_dgram_ops but without | |
811 | * udp_poll | |
812 | */ | |
813 | static struct proto_ops inet_sockraw_ops = { | |
814 | .family = PF_INET, | |
815 | .owner = THIS_MODULE, | |
816 | .release = inet_release, | |
817 | .bind = inet_bind, | |
818 | .connect = inet_dgram_connect, | |
819 | .socketpair = sock_no_socketpair, | |
820 | .accept = sock_no_accept, | |
821 | .getname = inet_getname, | |
822 | .poll = datagram_poll, | |
823 | .ioctl = inet_ioctl, | |
824 | .listen = sock_no_listen, | |
825 | .shutdown = inet_shutdown, | |
826 | .setsockopt = sock_common_setsockopt, | |
827 | .getsockopt = sock_common_getsockopt, | |
828 | .sendmsg = inet_sendmsg, | |
829 | .recvmsg = sock_common_recvmsg, | |
830 | .mmap = sock_no_mmap, | |
831 | .sendpage = inet_sendpage, | |
832 | }; | |
833 | ||
834 | static struct net_proto_family inet_family_ops = { | |
835 | .family = PF_INET, | |
836 | .create = inet_create, | |
837 | .owner = THIS_MODULE, | |
838 | }; | |
839 | ||
840 | ||
841 | extern void tcp_init(void); | |
842 | extern void tcp_v4_init(struct net_proto_family *); | |
843 | ||
844 | /* Upon startup we insert all the elements in inetsw_array[] into | |
845 | * the linked list inetsw. | |
846 | */ | |
847 | static struct inet_protosw inetsw_array[] = | |
848 | { | |
849 | { | |
850 | .type = SOCK_STREAM, | |
851 | .protocol = IPPROTO_TCP, | |
852 | .prot = &tcp_prot, | |
853 | .ops = &inet_stream_ops, | |
854 | .capability = -1, | |
855 | .no_check = 0, | |
856 | .flags = INET_PROTOSW_PERMANENT, | |
857 | }, | |
858 | ||
859 | { | |
860 | .type = SOCK_DGRAM, | |
861 | .protocol = IPPROTO_UDP, | |
862 | .prot = &udp_prot, | |
863 | .ops = &inet_dgram_ops, | |
864 | .capability = -1, | |
865 | .no_check = UDP_CSUM_DEFAULT, | |
866 | .flags = INET_PROTOSW_PERMANENT, | |
867 | }, | |
868 | ||
869 | ||
870 | { | |
871 | .type = SOCK_RAW, | |
872 | .protocol = IPPROTO_IP, /* wild card */ | |
873 | .prot = &raw_prot, | |
874 | .ops = &inet_sockraw_ops, | |
875 | .capability = CAP_NET_RAW, | |
876 | .no_check = UDP_CSUM_DEFAULT, | |
877 | .flags = INET_PROTOSW_REUSE, | |
878 | } | |
879 | }; | |
880 | ||
881 | #define INETSW_ARRAY_LEN (sizeof(inetsw_array) / sizeof(struct inet_protosw)) | |
882 | ||
883 | void inet_register_protosw(struct inet_protosw *p) | |
884 | { | |
885 | struct list_head *lh; | |
886 | struct inet_protosw *answer; | |
887 | int protocol = p->protocol; | |
888 | struct list_head *last_perm; | |
889 | ||
890 | spin_lock_bh(&inetsw_lock); | |
891 | ||
892 | if (p->type >= SOCK_MAX) | |
893 | goto out_illegal; | |
894 | ||
895 | /* If we are trying to override a permanent protocol, bail. */ | |
896 | answer = NULL; | |
897 | last_perm = &inetsw[p->type]; | |
898 | list_for_each(lh, &inetsw[p->type]) { | |
899 | answer = list_entry(lh, struct inet_protosw, list); | |
900 | ||
901 | /* Check only the non-wild match. */ | |
902 | if (INET_PROTOSW_PERMANENT & answer->flags) { | |
903 | if (protocol == answer->protocol) | |
904 | break; | |
905 | last_perm = lh; | |
906 | } | |
907 | ||
908 | answer = NULL; | |
909 | } | |
910 | if (answer) | |
911 | goto out_permanent; | |
912 | ||
913 | /* Add the new entry after the last permanent entry if any, so that | |
914 | * the new entry does not override a permanent entry when matched with | |
915 | * a wild-card protocol. But it is allowed to override any existing | |
916 | * non-permanent entry. This means that when we remove this entry, the | |
917 | * system automatically returns to the old behavior. | |
918 | */ | |
919 | list_add_rcu(&p->list, last_perm); | |
920 | out: | |
921 | spin_unlock_bh(&inetsw_lock); | |
922 | ||
923 | synchronize_net(); | |
924 | ||
925 | return; | |
926 | ||
927 | out_permanent: | |
928 | printk(KERN_ERR "Attempt to override permanent protocol %d.\n", | |
929 | protocol); | |
930 | goto out; | |
931 | ||
932 | out_illegal: | |
933 | printk(KERN_ERR | |
934 | "Ignoring attempt to register invalid socket type %d.\n", | |
935 | p->type); | |
936 | goto out; | |
937 | } | |
938 | ||
939 | void inet_unregister_protosw(struct inet_protosw *p) | |
940 | { | |
941 | if (INET_PROTOSW_PERMANENT & p->flags) { | |
942 | printk(KERN_ERR | |
943 | "Attempt to unregister permanent protocol %d.\n", | |
944 | p->protocol); | |
945 | } else { | |
946 | spin_lock_bh(&inetsw_lock); | |
947 | list_del_rcu(&p->list); | |
948 | spin_unlock_bh(&inetsw_lock); | |
949 | ||
950 | synchronize_net(); | |
951 | } | |
952 | } | |
953 | ||
954 | #ifdef CONFIG_IP_MULTICAST | |
955 | static struct net_protocol igmp_protocol = { | |
956 | .handler = igmp_rcv, | |
957 | }; | |
958 | #endif | |
959 | ||
960 | static struct net_protocol tcp_protocol = { | |
961 | .handler = tcp_v4_rcv, | |
962 | .err_handler = tcp_v4_err, | |
963 | .no_policy = 1, | |
964 | }; | |
965 | ||
966 | static struct net_protocol udp_protocol = { | |
967 | .handler = udp_rcv, | |
968 | .err_handler = udp_err, | |
969 | .no_policy = 1, | |
970 | }; | |
971 | ||
972 | static struct net_protocol icmp_protocol = { | |
973 | .handler = icmp_rcv, | |
974 | }; | |
975 | ||
976 | static int __init init_ipv4_mibs(void) | |
977 | { | |
978 | net_statistics[0] = alloc_percpu(struct linux_mib); | |
979 | net_statistics[1] = alloc_percpu(struct linux_mib); | |
980 | ip_statistics[0] = alloc_percpu(struct ipstats_mib); | |
981 | ip_statistics[1] = alloc_percpu(struct ipstats_mib); | |
982 | icmp_statistics[0] = alloc_percpu(struct icmp_mib); | |
983 | icmp_statistics[1] = alloc_percpu(struct icmp_mib); | |
984 | tcp_statistics[0] = alloc_percpu(struct tcp_mib); | |
985 | tcp_statistics[1] = alloc_percpu(struct tcp_mib); | |
986 | udp_statistics[0] = alloc_percpu(struct udp_mib); | |
987 | udp_statistics[1] = alloc_percpu(struct udp_mib); | |
988 | if (! | |
989 | (net_statistics[0] && net_statistics[1] && ip_statistics[0] | |
990 | && ip_statistics[1] && tcp_statistics[0] && tcp_statistics[1] | |
991 | && udp_statistics[0] && udp_statistics[1])) | |
992 | return -ENOMEM; | |
993 | ||
994 | (void) tcp_mib_init(); | |
995 | ||
996 | return 0; | |
997 | } | |
998 | ||
999 | static int ipv4_proc_init(void); | |
1000 | extern void ipfrag_init(void); | |
1001 | ||
30e224d7 HX |
1002 | /* |
1003 | * IP protocol layer initialiser | |
1004 | */ | |
1005 | ||
1006 | static struct packet_type ip_packet_type = { | |
1007 | .type = __constant_htons(ETH_P_IP), | |
1008 | .func = ip_rcv, | |
1009 | }; | |
1010 | ||
1da177e4 LT |
1011 | static int __init inet_init(void) |
1012 | { | |
1013 | struct sk_buff *dummy_skb; | |
1014 | struct inet_protosw *q; | |
1015 | struct list_head *r; | |
1016 | int rc = -EINVAL; | |
1017 | ||
1018 | if (sizeof(struct inet_skb_parm) > sizeof(dummy_skb->cb)) { | |
1019 | printk(KERN_CRIT "%s: panic\n", __FUNCTION__); | |
1020 | goto out; | |
1021 | } | |
1022 | ||
1023 | rc = proto_register(&tcp_prot, 1); | |
1024 | if (rc) | |
1025 | goto out; | |
1026 | ||
1027 | rc = proto_register(&udp_prot, 1); | |
1028 | if (rc) | |
1029 | goto out_unregister_tcp_proto; | |
1030 | ||
1031 | rc = proto_register(&raw_prot, 1); | |
1032 | if (rc) | |
1033 | goto out_unregister_udp_proto; | |
1034 | ||
1035 | /* | |
1036 | * Tell SOCKET that we are alive... | |
1037 | */ | |
1038 | ||
1039 | (void)sock_register(&inet_family_ops); | |
1040 | ||
1041 | /* | |
1042 | * Add all the base protocols. | |
1043 | */ | |
1044 | ||
1045 | if (inet_add_protocol(&icmp_protocol, IPPROTO_ICMP) < 0) | |
1046 | printk(KERN_CRIT "inet_init: Cannot add ICMP protocol\n"); | |
1047 | if (inet_add_protocol(&udp_protocol, IPPROTO_UDP) < 0) | |
1048 | printk(KERN_CRIT "inet_init: Cannot add UDP protocol\n"); | |
1049 | if (inet_add_protocol(&tcp_protocol, IPPROTO_TCP) < 0) | |
1050 | printk(KERN_CRIT "inet_init: Cannot add TCP protocol\n"); | |
1051 | #ifdef CONFIG_IP_MULTICAST | |
1052 | if (inet_add_protocol(&igmp_protocol, IPPROTO_IGMP) < 0) | |
1053 | printk(KERN_CRIT "inet_init: Cannot add IGMP protocol\n"); | |
1054 | #endif | |
1055 | ||
1056 | /* Register the socket-side information for inet_create. */ | |
1057 | for (r = &inetsw[0]; r < &inetsw[SOCK_MAX]; ++r) | |
1058 | INIT_LIST_HEAD(r); | |
1059 | ||
1060 | for (q = inetsw_array; q < &inetsw_array[INETSW_ARRAY_LEN]; ++q) | |
1061 | inet_register_protosw(q); | |
1062 | ||
1063 | /* | |
1064 | * Set the ARP module up | |
1065 | */ | |
1066 | ||
1067 | arp_init(); | |
1068 | ||
1069 | /* | |
1070 | * Set the IP module up | |
1071 | */ | |
1072 | ||
1073 | ip_init(); | |
1074 | ||
1075 | tcp_v4_init(&inet_family_ops); | |
1076 | ||
1077 | /* Setup TCP slab cache for open requests. */ | |
1078 | tcp_init(); | |
1079 | ||
1080 | ||
1081 | /* | |
1082 | * Set the ICMP layer up | |
1083 | */ | |
1084 | ||
1085 | icmp_init(&inet_family_ops); | |
1086 | ||
1087 | /* | |
1088 | * Initialise the multicast router | |
1089 | */ | |
1090 | #if defined(CONFIG_IP_MROUTE) | |
1091 | ip_mr_init(); | |
1092 | #endif | |
1093 | /* | |
1094 | * Initialise per-cpu ipv4 mibs | |
1095 | */ | |
1096 | ||
1097 | if(init_ipv4_mibs()) | |
1098 | printk(KERN_CRIT "inet_init: Cannot init ipv4 mibs\n"); ; | |
1099 | ||
1100 | ipv4_proc_init(); | |
1101 | ||
1102 | ipfrag_init(); | |
1103 | ||
30e224d7 HX |
1104 | dev_add_pack(&ip_packet_type); |
1105 | ||
1da177e4 LT |
1106 | rc = 0; |
1107 | out: | |
1108 | return rc; | |
1109 | out_unregister_tcp_proto: | |
1110 | proto_unregister(&tcp_prot); | |
1111 | out_unregister_udp_proto: | |
1112 | proto_unregister(&udp_prot); | |
1113 | goto out; | |
1114 | } | |
1115 | ||
1116 | module_init(inet_init); | |
1117 | ||
1118 | /* ------------------------------------------------------------------------ */ | |
1119 | ||
1120 | #ifdef CONFIG_PROC_FS | |
1121 | extern int fib_proc_init(void); | |
1122 | extern void fib_proc_exit(void); | |
19baf839 RO |
1123 | #ifdef CONFIG_IP_FIB_TRIE |
1124 | extern int fib_stat_proc_init(void); | |
1125 | extern void fib_stat_proc_exit(void); | |
1126 | #endif | |
1da177e4 LT |
1127 | extern int ip_misc_proc_init(void); |
1128 | extern int raw_proc_init(void); | |
1129 | extern void raw_proc_exit(void); | |
1130 | extern int tcp4_proc_init(void); | |
1131 | extern void tcp4_proc_exit(void); | |
1132 | extern int udp4_proc_init(void); | |
1133 | extern void udp4_proc_exit(void); | |
1134 | ||
1135 | static int __init ipv4_proc_init(void) | |
1136 | { | |
1137 | int rc = 0; | |
1138 | ||
1139 | if (raw_proc_init()) | |
1140 | goto out_raw; | |
1141 | if (tcp4_proc_init()) | |
1142 | goto out_tcp; | |
1143 | if (udp4_proc_init()) | |
1144 | goto out_udp; | |
1145 | if (fib_proc_init()) | |
1146 | goto out_fib; | |
19baf839 RO |
1147 | #ifdef CONFIG_IP_FIB_TRIE |
1148 | if (fib_stat_proc_init()) | |
1149 | goto out_fib_stat; | |
c877efb2 | 1150 | #endif |
1da177e4 LT |
1151 | if (ip_misc_proc_init()) |
1152 | goto out_misc; | |
1153 | out: | |
1154 | return rc; | |
1155 | out_misc: | |
19baf839 RO |
1156 | #ifdef CONFIG_IP_FIB_TRIE |
1157 | fib_stat_proc_exit(); | |
1158 | out_fib_stat: | |
1159 | #endif | |
1da177e4 LT |
1160 | fib_proc_exit(); |
1161 | out_fib: | |
1162 | udp4_proc_exit(); | |
1163 | out_udp: | |
1164 | tcp4_proc_exit(); | |
1165 | out_tcp: | |
1166 | raw_proc_exit(); | |
1167 | out_raw: | |
1168 | rc = -ENOMEM; | |
1169 | goto out; | |
1170 | } | |
1171 | ||
1172 | #else /* CONFIG_PROC_FS */ | |
1173 | static int __init ipv4_proc_init(void) | |
1174 | { | |
1175 | return 0; | |
1176 | } | |
1177 | #endif /* CONFIG_PROC_FS */ | |
1178 | ||
1179 | MODULE_ALIAS_NETPROTO(PF_INET); | |
1180 | ||
1181 | EXPORT_SYMBOL(inet_accept); | |
1182 | EXPORT_SYMBOL(inet_bind); | |
1183 | EXPORT_SYMBOL(inet_dgram_connect); | |
1184 | EXPORT_SYMBOL(inet_dgram_ops); | |
1185 | EXPORT_SYMBOL(inet_getname); | |
1186 | EXPORT_SYMBOL(inet_ioctl); | |
1187 | EXPORT_SYMBOL(inet_listen); | |
1188 | EXPORT_SYMBOL(inet_register_protosw); | |
1189 | EXPORT_SYMBOL(inet_release); | |
1190 | EXPORT_SYMBOL(inet_sendmsg); | |
1191 | EXPORT_SYMBOL(inet_shutdown); | |
1192 | EXPORT_SYMBOL(inet_sock_destruct); | |
1193 | EXPORT_SYMBOL(inet_stream_connect); | |
1194 | EXPORT_SYMBOL(inet_stream_ops); | |
1195 | EXPORT_SYMBOL(inet_unregister_protosw); | |
1196 | EXPORT_SYMBOL(net_statistics); | |
cdac4e07 | 1197 | EXPORT_SYMBOL(sysctl_ip_nonlocal_bind); |