Commit | Line | Data |
---|---|---|
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 | * RAW - implementation of IP "raw" sockets. | |
7 | * | |
02c30a84 | 8 | * Authors: Ross Biro |
1da177e4 LT |
9 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
10 | * | |
11 | * Fixes: | |
12 | * Alan Cox : verify_area() fixed up | |
13 | * Alan Cox : ICMP error handling | |
14 | * Alan Cox : EMSGSIZE if you send too big a packet | |
15 | * Alan Cox : Now uses generic datagrams and shared | |
16 | * skbuff library. No more peek crashes, | |
17 | * no more backlogs | |
18 | * Alan Cox : Checks sk->broadcast. | |
19 | * Alan Cox : Uses skb_free_datagram/skb_copy_datagram | |
20 | * Alan Cox : Raw passes ip options too | |
21 | * Alan Cox : Setsocketopt added | |
22 | * Alan Cox : Fixed error return for broadcasts | |
23 | * Alan Cox : Removed wake_up calls | |
24 | * Alan Cox : Use ttl/tos | |
25 | * Alan Cox : Cleaned up old debugging | |
26 | * Alan Cox : Use new kernel side addresses | |
27 | * Arnt Gulbrandsen : Fixed MSG_DONTROUTE in raw sockets. | |
28 | * Alan Cox : BSD style RAW socket demultiplexing. | |
29 | * Alan Cox : Beginnings of mrouted support. | |
30 | * Alan Cox : Added IP_HDRINCL option. | |
31 | * Alan Cox : Skip broadcast check if BSDism set. | |
32 | * David S. Miller : New socket lookup architecture. | |
33 | * | |
34 | * This program is free software; you can redistribute it and/or | |
35 | * modify it under the terms of the GNU General Public License | |
36 | * as published by the Free Software Foundation; either version | |
37 | * 2 of the License, or (at your option) any later version. | |
38 | */ | |
bf0d5249 | 39 | |
715b49ef | 40 | #include <linux/types.h> |
60063497 | 41 | #include <linux/atomic.h> |
1da177e4 LT |
42 | #include <asm/byteorder.h> |
43 | #include <asm/current.h> | |
44 | #include <asm/uaccess.h> | |
45 | #include <asm/ioctls.h> | |
1da177e4 LT |
46 | #include <linux/stddef.h> |
47 | #include <linux/slab.h> | |
48 | #include <linux/errno.h> | |
49 | #include <linux/aio.h> | |
50 | #include <linux/kernel.h> | |
bc3b2d7f | 51 | #include <linux/export.h> |
1da177e4 LT |
52 | #include <linux/spinlock.h> |
53 | #include <linux/sockios.h> | |
54 | #include <linux/socket.h> | |
55 | #include <linux/in.h> | |
56 | #include <linux/mroute.h> | |
57 | #include <linux/netdevice.h> | |
58 | #include <linux/in_route.h> | |
59 | #include <linux/route.h> | |
1da177e4 | 60 | #include <linux/skbuff.h> |
457c4cbc | 61 | #include <net/net_namespace.h> |
1da177e4 LT |
62 | #include <net/dst.h> |
63 | #include <net/sock.h> | |
1da177e4 LT |
64 | #include <linux/ip.h> |
65 | #include <linux/net.h> | |
66 | #include <net/ip.h> | |
67 | #include <net/icmp.h> | |
68 | #include <net/udp.h> | |
69 | #include <net/raw.h> | |
70 | #include <net/snmp.h> | |
c752f073 | 71 | #include <net/tcp_states.h> |
1da177e4 LT |
72 | #include <net/inet_common.h> |
73 | #include <net/checksum.h> | |
74 | #include <net/xfrm.h> | |
75 | #include <linux/rtnetlink.h> | |
76 | #include <linux/proc_fs.h> | |
77 | #include <linux/seq_file.h> | |
78 | #include <linux/netfilter.h> | |
79 | #include <linux/netfilter_ipv4.h> | |
709b46e8 | 80 | #include <linux/compat.h> |
1da177e4 | 81 | |
b673e4df | 82 | static struct raw_hashinfo raw_v4_hashinfo = { |
938b93ad | 83 | .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock), |
b673e4df | 84 | }; |
1da177e4 | 85 | |
fc8717ba | 86 | void raw_hash_sk(struct sock *sk) |
1da177e4 | 87 | { |
fc8717ba | 88 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
65b4c50b | 89 | struct hlist_head *head; |
1da177e4 | 90 | |
c720c7e8 | 91 | head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)]; |
65b4c50b PE |
92 | |
93 | write_lock_bh(&h->lock); | |
1da177e4 | 94 | sk_add_node(sk, head); |
c29a0bc4 | 95 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); |
65b4c50b PE |
96 | write_unlock_bh(&h->lock); |
97 | } | |
98 | EXPORT_SYMBOL_GPL(raw_hash_sk); | |
99 | ||
fc8717ba | 100 | void raw_unhash_sk(struct sock *sk) |
ab70768e | 101 | { |
fc8717ba PE |
102 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
103 | ||
ab70768e PE |
104 | write_lock_bh(&h->lock); |
105 | if (sk_del_node_init(sk)) | |
c29a0bc4 | 106 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); |
ab70768e PE |
107 | write_unlock_bh(&h->lock); |
108 | } | |
109 | EXPORT_SYMBOL_GPL(raw_unhash_sk); | |
110 | ||
be185884 PE |
111 | static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk, |
112 | unsigned short num, __be32 raddr, __be32 laddr, int dif) | |
1da177e4 | 113 | { |
b67bfe0d | 114 | sk_for_each_from(sk) { |
1da177e4 LT |
115 | struct inet_sock *inet = inet_sk(sk); |
116 | ||
c720c7e8 ED |
117 | if (net_eq(sock_net(sk), net) && inet->inet_num == num && |
118 | !(inet->inet_daddr && inet->inet_daddr != raddr) && | |
119 | !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) && | |
1da177e4 LT |
120 | !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)) |
121 | goto found; /* gotcha */ | |
122 | } | |
123 | sk = NULL; | |
124 | found: | |
125 | return sk; | |
126 | } | |
127 | ||
128 | /* | |
129 | * 0 - deliver | |
130 | * 1 - block | |
131 | */ | |
ab43ed8b | 132 | static int icmp_filter(const struct sock *sk, const struct sk_buff *skb) |
1da177e4 | 133 | { |
ab43ed8b ED |
134 | struct icmphdr _hdr; |
135 | const struct icmphdr *hdr; | |
1da177e4 | 136 | |
ab43ed8b ED |
137 | hdr = skb_header_pointer(skb, skb_transport_offset(skb), |
138 | sizeof(_hdr), &_hdr); | |
139 | if (!hdr) | |
1da177e4 LT |
140 | return 1; |
141 | ||
ab43ed8b | 142 | if (hdr->type < 32) { |
1da177e4 LT |
143 | __u32 data = raw_sk(sk)->filter.data; |
144 | ||
ab43ed8b | 145 | return ((1U << hdr->type) & data) != 0; |
1da177e4 LT |
146 | } |
147 | ||
148 | /* Do not block unknown ICMP types */ | |
149 | return 0; | |
150 | } | |
151 | ||
152 | /* IP input processing comes here for RAW socket delivery. | |
153 | * Caller owns SKB, so we must make clones. | |
154 | * | |
155 | * RFC 1122: SHOULD pass TOS value up to the transport layer. | |
156 | * -> It does. And not only TOS, but all IP header. | |
157 | */ | |
b71d1d42 | 158 | static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash) |
1da177e4 LT |
159 | { |
160 | struct sock *sk; | |
161 | struct hlist_head *head; | |
d13964f4 | 162 | int delivered = 0; |
be185884 | 163 | struct net *net; |
1da177e4 | 164 | |
b673e4df PE |
165 | read_lock(&raw_v4_hashinfo.lock); |
166 | head = &raw_v4_hashinfo.ht[hash]; | |
1da177e4 LT |
167 | if (hlist_empty(head)) |
168 | goto out; | |
be185884 | 169 | |
c346dca1 | 170 | net = dev_net(skb->dev); |
be185884 | 171 | sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol, |
1da177e4 LT |
172 | iph->saddr, iph->daddr, |
173 | skb->dev->ifindex); | |
174 | ||
175 | while (sk) { | |
d13964f4 | 176 | delivered = 1; |
1da177e4 LT |
177 | if (iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) { |
178 | struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); | |
179 | ||
180 | /* Not releasing hash table! */ | |
181 | if (clone) | |
182 | raw_rcv(sk, clone); | |
183 | } | |
be185884 | 184 | sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol, |
1da177e4 LT |
185 | iph->saddr, iph->daddr, |
186 | skb->dev->ifindex); | |
187 | } | |
188 | out: | |
b673e4df | 189 | read_unlock(&raw_v4_hashinfo.lock); |
d13964f4 | 190 | return delivered; |
1da177e4 LT |
191 | } |
192 | ||
7bc54c90 PE |
193 | int raw_local_deliver(struct sk_buff *skb, int protocol) |
194 | { | |
195 | int hash; | |
196 | struct sock *raw_sk; | |
197 | ||
b673e4df PE |
198 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
199 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 PE |
200 | |
201 | /* If there maybe a raw socket we must check - if not we | |
202 | * don't care less | |
203 | */ | |
204 | if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash)) | |
205 | raw_sk = NULL; | |
206 | ||
207 | return raw_sk != NULL; | |
208 | ||
209 | } | |
210 | ||
211 | static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info) | |
1da177e4 LT |
212 | { |
213 | struct inet_sock *inet = inet_sk(sk); | |
88c7664f ACM |
214 | const int type = icmp_hdr(skb)->type; |
215 | const int code = icmp_hdr(skb)->code; | |
1da177e4 LT |
216 | int err = 0; |
217 | int harderr = 0; | |
218 | ||
36393395 DM |
219 | if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) |
220 | ipv4_sk_update_pmtu(skb, sk, info); | |
55be7a9c DM |
221 | else if (type == ICMP_REDIRECT) |
222 | ipv4_sk_redirect(skb, sk); | |
36393395 | 223 | |
1da177e4 LT |
224 | /* Report error on raw socket, if: |
225 | 1. User requested ip_recverr. | |
226 | 2. Socket is connected (otherwise the error indication | |
227 | is useless without ip_recverr and error is hard. | |
228 | */ | |
229 | if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED) | |
230 | return; | |
231 | ||
232 | switch (type) { | |
233 | default: | |
234 | case ICMP_TIME_EXCEEDED: | |
235 | err = EHOSTUNREACH; | |
236 | break; | |
237 | case ICMP_SOURCE_QUENCH: | |
238 | return; | |
239 | case ICMP_PARAMETERPROB: | |
240 | err = EPROTO; | |
241 | harderr = 1; | |
242 | break; | |
243 | case ICMP_DEST_UNREACH: | |
244 | err = EHOSTUNREACH; | |
245 | if (code > NR_ICMP_UNREACH) | |
246 | break; | |
247 | err = icmp_err_convert[code].errno; | |
248 | harderr = icmp_err_convert[code].fatal; | |
249 | if (code == ICMP_FRAG_NEEDED) { | |
250 | harderr = inet->pmtudisc != IP_PMTUDISC_DONT; | |
251 | err = EMSGSIZE; | |
252 | } | |
253 | } | |
254 | ||
255 | if (inet->recverr) { | |
b71d1d42 | 256 | const struct iphdr *iph = (const struct iphdr *)skb->data; |
1da177e4 LT |
257 | u8 *payload = skb->data + (iph->ihl << 2); |
258 | ||
259 | if (inet->hdrincl) | |
260 | payload = skb->data; | |
261 | ip_icmp_error(sk, skb, err, 0, info, payload); | |
262 | } | |
263 | ||
264 | if (inet->recverr || harderr) { | |
265 | sk->sk_err = err; | |
266 | sk->sk_error_report(sk); | |
267 | } | |
268 | } | |
269 | ||
7bc54c90 PE |
270 | void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info) |
271 | { | |
272 | int hash; | |
273 | struct sock *raw_sk; | |
b71d1d42 | 274 | const struct iphdr *iph; |
be185884 | 275 | struct net *net; |
7bc54c90 | 276 | |
b673e4df | 277 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
7bc54c90 | 278 | |
b673e4df PE |
279 | read_lock(&raw_v4_hashinfo.lock); |
280 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 | 281 | if (raw_sk != NULL) { |
b71d1d42 | 282 | iph = (const struct iphdr *)skb->data; |
c346dca1 | 283 | net = dev_net(skb->dev); |
be185884 PE |
284 | |
285 | while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol, | |
286 | iph->daddr, iph->saddr, | |
7bc54c90 PE |
287 | skb->dev->ifindex)) != NULL) { |
288 | raw_err(raw_sk, skb, info); | |
289 | raw_sk = sk_next(raw_sk); | |
b71d1d42 | 290 | iph = (const struct iphdr *)skb->data; |
7bc54c90 PE |
291 | } |
292 | } | |
b673e4df | 293 | read_unlock(&raw_v4_hashinfo.lock); |
7bc54c90 PE |
294 | } |
295 | ||
5e73ea1a | 296 | static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb) |
1da177e4 LT |
297 | { |
298 | /* Charge it to the socket. */ | |
e905a9ed | 299 | |
d826eb14 ED |
300 | ipv4_pktinfo_prepare(skb); |
301 | if (sock_queue_rcv_skb(sk, skb) < 0) { | |
1da177e4 LT |
302 | kfree_skb(skb); |
303 | return NET_RX_DROP; | |
304 | } | |
305 | ||
306 | return NET_RX_SUCCESS; | |
307 | } | |
308 | ||
309 | int raw_rcv(struct sock *sk, struct sk_buff *skb) | |
310 | { | |
311 | if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) { | |
33c732c3 | 312 | atomic_inc(&sk->sk_drops); |
1da177e4 LT |
313 | kfree_skb(skb); |
314 | return NET_RX_DROP; | |
315 | } | |
b59c2701 | 316 | nf_reset(skb); |
1da177e4 | 317 | |
d56f90a7 | 318 | skb_push(skb, skb->data - skb_network_header(skb)); |
1da177e4 LT |
319 | |
320 | raw_rcv_skb(sk, skb); | |
321 | return 0; | |
322 | } | |
323 | ||
77968b78 DM |
324 | static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4, |
325 | void *from, size_t length, | |
326 | struct rtable **rtp, | |
327 | unsigned int flags) | |
1da177e4 LT |
328 | { |
329 | struct inet_sock *inet = inet_sk(sk); | |
0388b004 | 330 | struct net *net = sock_net(sk); |
1da177e4 LT |
331 | struct iphdr *iph; |
332 | struct sk_buff *skb; | |
f844c74f | 333 | unsigned int iphlen; |
1da177e4 | 334 | int err; |
1789a640 | 335 | struct rtable *rt = *rtp; |
66088243 | 336 | int hlen, tlen; |
1da177e4 | 337 | |
d8d1f30b | 338 | if (length > rt->dst.dev->mtu) { |
77968b78 | 339 | ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, |
d8d1f30b | 340 | rt->dst.dev->mtu); |
1da177e4 LT |
341 | return -EMSGSIZE; |
342 | } | |
f9e1b47a AP |
343 | if (length < sizeof(struct iphdr)) |
344 | return -EINVAL; | |
345 | ||
1da177e4 LT |
346 | if (flags&MSG_PROBE) |
347 | goto out; | |
348 | ||
66088243 HX |
349 | hlen = LL_RESERVED_SPACE(rt->dst.dev); |
350 | tlen = rt->dst.dev->needed_tailroom; | |
f5184d26 | 351 | skb = sock_alloc_send_skb(sk, |
66088243 | 352 | length + hlen + tlen + 15, |
f5184d26 | 353 | flags & MSG_DONTWAIT, &err); |
1da177e4 | 354 | if (skb == NULL) |
e905a9ed | 355 | goto error; |
66088243 | 356 | skb_reserve(skb, hlen); |
1da177e4 LT |
357 | |
358 | skb->priority = sk->sk_priority; | |
4a19ec58 | 359 | skb->mark = sk->sk_mark; |
d8d1f30b | 360 | skb_dst_set(skb, &rt->dst); |
1789a640 | 361 | *rtp = NULL; |
1da177e4 | 362 | |
7e28ecc2 | 363 | skb_reset_network_header(skb); |
eddc9ec5 | 364 | iph = ip_hdr(skb); |
7e28ecc2 | 365 | skb_put(skb, length); |
1da177e4 LT |
366 | |
367 | skb->ip_summed = CHECKSUM_NONE; | |
368 | ||
b0e380b1 | 369 | skb->transport_header = skb->network_header; |
55888dfb NH |
370 | err = -EFAULT; |
371 | if (memcpy_fromiovecend((void *)iph, from, 0, length)) | |
372 | goto error_free; | |
1da177e4 | 373 | |
f844c74f | 374 | iphlen = iph->ihl * 4; |
55888dfb NH |
375 | |
376 | /* | |
377 | * We don't want to modify the ip header, but we do need to | |
378 | * be sure that it won't cause problems later along the network | |
379 | * stack. Specifically we want to make sure that iph->ihl is a | |
380 | * sane value. If ihl points beyond the length of the buffer passed | |
381 | * in, reject the frame as invalid | |
382 | */ | |
383 | err = -EINVAL; | |
384 | if (iphlen > length) | |
385 | goto error_free; | |
386 | ||
387 | if (iphlen >= sizeof(*iph)) { | |
1da177e4 | 388 | if (!iph->saddr) |
77968b78 | 389 | iph->saddr = fl4->saddr; |
1da177e4 LT |
390 | iph->check = 0; |
391 | iph->tot_len = htons(length); | |
392 | if (!iph->id) | |
ff1f69a8 | 393 | ip_select_ident(skb, NULL); |
1da177e4 LT |
394 | |
395 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
396 | } | |
96793b48 | 397 | if (iph->protocol == IPPROTO_ICMP) |
0388b004 | 398 | icmp_out_count(net, ((struct icmphdr *) |
96793b48 | 399 | skb_transport_header(skb))->type); |
1da177e4 | 400 | |
9bbc768a | 401 | err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, skb, NULL, |
d8d1f30b | 402 | rt->dst.dev, dst_output); |
1da177e4 | 403 | if (err > 0) |
6ce9e7b5 | 404 | err = net_xmit_errno(err); |
1da177e4 LT |
405 | if (err) |
406 | goto error; | |
407 | out: | |
408 | return 0; | |
409 | ||
55888dfb | 410 | error_free: |
1da177e4 LT |
411 | kfree_skb(skb); |
412 | error: | |
5e38e270 | 413 | IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS); |
6ce9e7b5 ED |
414 | if (err == -ENOBUFS && !inet->recverr) |
415 | err = 0; | |
e905a9ed | 416 | return err; |
1da177e4 LT |
417 | } |
418 | ||
9d6ec938 | 419 | static int raw_probe_proto_opt(struct flowi4 *fl4, struct msghdr *msg) |
1da177e4 LT |
420 | { |
421 | struct iovec *iov; | |
422 | u8 __user *type = NULL; | |
423 | u8 __user *code = NULL; | |
424 | int probed = 0; | |
93765d8a | 425 | unsigned int i; |
1da177e4 LT |
426 | |
427 | if (!msg->msg_iov) | |
a27b58fe | 428 | return 0; |
1da177e4 LT |
429 | |
430 | for (i = 0; i < msg->msg_iovlen; i++) { | |
431 | iov = &msg->msg_iov[i]; | |
432 | if (!iov) | |
433 | continue; | |
434 | ||
9d6ec938 | 435 | switch (fl4->flowi4_proto) { |
1da177e4 LT |
436 | case IPPROTO_ICMP: |
437 | /* check if one-byte field is readable or not. */ | |
438 | if (iov->iov_base && iov->iov_len < 1) | |
439 | break; | |
440 | ||
441 | if (!type) { | |
442 | type = iov->iov_base; | |
443 | /* check if code field is readable or not. */ | |
444 | if (iov->iov_len > 1) | |
445 | code = type + 1; | |
446 | } else if (!code) | |
447 | code = iov->iov_base; | |
448 | ||
449 | if (type && code) { | |
9cce96df DM |
450 | if (get_user(fl4->fl4_icmp_type, type) || |
451 | get_user(fl4->fl4_icmp_code, code)) | |
a27b58fe | 452 | return -EFAULT; |
1da177e4 LT |
453 | probed = 1; |
454 | } | |
455 | break; | |
456 | default: | |
457 | probed = 1; | |
458 | break; | |
459 | } | |
460 | if (probed) | |
461 | break; | |
462 | } | |
a27b58fe | 463 | return 0; |
1da177e4 LT |
464 | } |
465 | ||
466 | static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
467 | size_t len) | |
468 | { | |
469 | struct inet_sock *inet = inet_sk(sk); | |
470 | struct ipcm_cookie ipc; | |
471 | struct rtable *rt = NULL; | |
77968b78 | 472 | struct flowi4 fl4; |
1da177e4 | 473 | int free = 0; |
3ca3c68e | 474 | __be32 daddr; |
c1d18f9f | 475 | __be32 saddr; |
1da177e4 LT |
476 | u8 tos; |
477 | int err; | |
f6d8bd05 | 478 | struct ip_options_data opt_copy; |
1da177e4 LT |
479 | |
480 | err = -EMSGSIZE; | |
926d4b81 | 481 | if (len > 0xFFFF) |
1da177e4 LT |
482 | goto out; |
483 | ||
484 | /* | |
485 | * Check the flags. | |
486 | */ | |
487 | ||
488 | err = -EOPNOTSUPP; | |
489 | if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */ | |
490 | goto out; /* compatibility */ | |
e905a9ed | 491 | |
1da177e4 | 492 | /* |
e905a9ed | 493 | * Get and verify the address. |
1da177e4 LT |
494 | */ |
495 | ||
496 | if (msg->msg_namelen) { | |
5a5f3a8d | 497 | struct sockaddr_in *usin = (struct sockaddr_in *)msg->msg_name; |
1da177e4 LT |
498 | err = -EINVAL; |
499 | if (msg->msg_namelen < sizeof(*usin)) | |
500 | goto out; | |
501 | if (usin->sin_family != AF_INET) { | |
058bd4d2 JP |
502 | pr_info_once("%s: %s forgot to set AF_INET. Fix it!\n", |
503 | __func__, current->comm); | |
1da177e4 LT |
504 | err = -EAFNOSUPPORT; |
505 | if (usin->sin_family) | |
506 | goto out; | |
507 | } | |
508 | daddr = usin->sin_addr.s_addr; | |
509 | /* ANK: I did not forget to get protocol from port field. | |
510 | * I just do not know, who uses this weirdness. | |
511 | * IP_HDRINCL is much more convenient. | |
512 | */ | |
513 | } else { | |
514 | err = -EDESTADDRREQ; | |
e905a9ed | 515 | if (sk->sk_state != TCP_ESTABLISHED) |
1da177e4 | 516 | goto out; |
c720c7e8 | 517 | daddr = inet->inet_daddr; |
1da177e4 LT |
518 | } |
519 | ||
c720c7e8 | 520 | ipc.addr = inet->inet_saddr; |
1da177e4 | 521 | ipc.opt = NULL; |
2244d07b | 522 | ipc.tx_flags = 0; |
1da177e4 LT |
523 | ipc.oif = sk->sk_bound_dev_if; |
524 | ||
525 | if (msg->msg_controllen) { | |
3b1e0a65 | 526 | err = ip_cmsg_send(sock_net(sk), msg, &ipc); |
1da177e4 LT |
527 | if (err) |
528 | goto out; | |
529 | if (ipc.opt) | |
530 | free = 1; | |
531 | } | |
532 | ||
533 | saddr = ipc.addr; | |
534 | ipc.addr = daddr; | |
535 | ||
f6d8bd05 ED |
536 | if (!ipc.opt) { |
537 | struct ip_options_rcu *inet_opt; | |
538 | ||
539 | rcu_read_lock(); | |
540 | inet_opt = rcu_dereference(inet->inet_opt); | |
541 | if (inet_opt) { | |
542 | memcpy(&opt_copy, inet_opt, | |
543 | sizeof(*inet_opt) + inet_opt->opt.optlen); | |
544 | ipc.opt = &opt_copy.opt; | |
545 | } | |
546 | rcu_read_unlock(); | |
547 | } | |
1da177e4 LT |
548 | |
549 | if (ipc.opt) { | |
550 | err = -EINVAL; | |
551 | /* Linux does not mangle headers on raw sockets, | |
552 | * so that IP options + IP_HDRINCL is non-sense. | |
553 | */ | |
554 | if (inet->hdrincl) | |
555 | goto done; | |
f6d8bd05 | 556 | if (ipc.opt->opt.srr) { |
1da177e4 LT |
557 | if (!daddr) |
558 | goto done; | |
f6d8bd05 | 559 | daddr = ipc.opt->opt.faddr; |
1da177e4 LT |
560 | } |
561 | } | |
562 | tos = RT_CONN_FLAGS(sk); | |
563 | if (msg->msg_flags & MSG_DONTROUTE) | |
564 | tos |= RTO_ONLINK; | |
565 | ||
f97c1e0c | 566 | if (ipv4_is_multicast(daddr)) { |
1da177e4 LT |
567 | if (!ipc.oif) |
568 | ipc.oif = inet->mc_index; | |
569 | if (!saddr) | |
570 | saddr = inet->mc_addr; | |
76e21053 EH |
571 | } else if (!ipc.oif) |
572 | ipc.oif = inet->uc_index; | |
1da177e4 | 573 | |
77968b78 DM |
574 | flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos, |
575 | RT_SCOPE_UNIVERSE, | |
576 | inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol, | |
322f496d CC |
577 | inet_sk_flowi_flags(sk) | FLOWI_FLAG_CAN_SLEEP | |
578 | (inet->hdrincl ? FLOWI_FLAG_KNOWN_NH : 0), | |
673476a9 | 579 | daddr, saddr, 0, 0); |
ef164ae3 | 580 | |
77968b78 DM |
581 | if (!inet->hdrincl) { |
582 | err = raw_probe_proto_opt(&fl4, msg); | |
583 | if (err) | |
b23dd4fe | 584 | goto done; |
77968b78 DM |
585 | } |
586 | ||
587 | security_sk_classify_flow(sk, flowi4_to_flowi(&fl4)); | |
588 | rt = ip_route_output_flow(sock_net(sk), &fl4, sk); | |
589 | if (IS_ERR(rt)) { | |
590 | err = PTR_ERR(rt); | |
591 | rt = NULL; | |
592 | goto done; | |
1da177e4 | 593 | } |
1da177e4 LT |
594 | |
595 | err = -EACCES; | |
596 | if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST)) | |
597 | goto done; | |
598 | ||
599 | if (msg->msg_flags & MSG_CONFIRM) | |
600 | goto do_confirm; | |
601 | back_from_confirm: | |
602 | ||
603 | if (inet->hdrincl) | |
77968b78 DM |
604 | err = raw_send_hdrinc(sk, &fl4, msg->msg_iov, len, |
605 | &rt, msg->msg_flags); | |
e905a9ed | 606 | |
1da177e4 LT |
607 | else { |
608 | if (!ipc.addr) | |
77968b78 | 609 | ipc.addr = fl4.daddr; |
1da177e4 | 610 | lock_sock(sk); |
f5fca608 | 611 | err = ip_append_data(sk, &fl4, ip_generic_getfrag, |
77968b78 DM |
612 | msg->msg_iov, len, 0, |
613 | &ipc, &rt, msg->msg_flags); | |
1da177e4 LT |
614 | if (err) |
615 | ip_flush_pending_frames(sk); | |
6ce9e7b5 | 616 | else if (!(msg->msg_flags & MSG_MORE)) { |
77968b78 | 617 | err = ip_push_pending_frames(sk, &fl4); |
6ce9e7b5 ED |
618 | if (err == -ENOBUFS && !inet->recverr) |
619 | err = 0; | |
620 | } | |
1da177e4 LT |
621 | release_sock(sk); |
622 | } | |
623 | done: | |
624 | if (free) | |
625 | kfree(ipc.opt); | |
626 | ip_rt_put(rt); | |
627 | ||
5418c692 JJ |
628 | out: |
629 | if (err < 0) | |
630 | return err; | |
631 | return len; | |
1da177e4 LT |
632 | |
633 | do_confirm: | |
d8d1f30b | 634 | dst_confirm(&rt->dst); |
1da177e4 LT |
635 | if (!(msg->msg_flags & MSG_PROBE) || len) |
636 | goto back_from_confirm; | |
637 | err = 0; | |
638 | goto done; | |
639 | } | |
640 | ||
641 | static void raw_close(struct sock *sk, long timeout) | |
642 | { | |
e905a9ed | 643 | /* |
25985edc | 644 | * Raw sockets may have direct kernel references. Kill them. |
1da177e4 LT |
645 | */ |
646 | ip_ra_control(sk, 0, NULL); | |
647 | ||
648 | sk_common_release(sk); | |
649 | } | |
650 | ||
7d06b2e0 | 651 | static void raw_destroy(struct sock *sk) |
22dd4850 DL |
652 | { |
653 | lock_sock(sk); | |
654 | ip_flush_pending_frames(sk); | |
655 | release_sock(sk); | |
22dd4850 DL |
656 | } |
657 | ||
1da177e4 LT |
658 | /* This gets rid of all the nasties in af_inet. -DaveM */ |
659 | static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) | |
660 | { | |
661 | struct inet_sock *inet = inet_sk(sk); | |
662 | struct sockaddr_in *addr = (struct sockaddr_in *) uaddr; | |
663 | int ret = -EINVAL; | |
664 | int chk_addr_ret; | |
665 | ||
666 | if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in)) | |
667 | goto out; | |
3b1e0a65 | 668 | chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr); |
1da177e4 LT |
669 | ret = -EADDRNOTAVAIL; |
670 | if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL && | |
671 | chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) | |
672 | goto out; | |
c720c7e8 | 673 | inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr; |
1da177e4 | 674 | if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) |
c720c7e8 | 675 | inet->inet_saddr = 0; /* Use device */ |
1da177e4 LT |
676 | sk_dst_reset(sk); |
677 | ret = 0; | |
678 | out: return ret; | |
679 | } | |
680 | ||
681 | /* | |
682 | * This should be easy, if there is something there | |
683 | * we return it, otherwise we block. | |
684 | */ | |
685 | ||
686 | static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
687 | size_t len, int noblock, int flags, int *addr_len) | |
688 | { | |
689 | struct inet_sock *inet = inet_sk(sk); | |
690 | size_t copied = 0; | |
691 | int err = -EOPNOTSUPP; | |
692 | struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name; | |
693 | struct sk_buff *skb; | |
694 | ||
695 | if (flags & MSG_OOB) | |
696 | goto out; | |
697 | ||
1da177e4 | 698 | if (flags & MSG_ERRQUEUE) { |
08c62a10 | 699 | err = ip_recv_error(sk, msg, len, addr_len); |
1da177e4 LT |
700 | goto out; |
701 | } | |
702 | ||
703 | skb = skb_recv_datagram(sk, flags, noblock, &err); | |
704 | if (!skb) | |
705 | goto out; | |
706 | ||
707 | copied = skb->len; | |
708 | if (len < copied) { | |
709 | msg->msg_flags |= MSG_TRUNC; | |
710 | copied = len; | |
711 | } | |
712 | ||
713 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
714 | if (err) | |
715 | goto done; | |
716 | ||
3b885787 | 717 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
718 | |
719 | /* Copy the address. */ | |
720 | if (sin) { | |
721 | sin->sin_family = AF_INET; | |
eddc9ec5 | 722 | sin->sin_addr.s_addr = ip_hdr(skb)->saddr; |
f59fc7f3 | 723 | sin->sin_port = 0; |
1da177e4 | 724 | memset(&sin->sin_zero, 0, sizeof(sin->sin_zero)); |
a2214488 | 725 | *addr_len = sizeof(*sin); |
1da177e4 LT |
726 | } |
727 | if (inet->cmsg_flags) | |
728 | ip_cmsg_recv(msg, skb); | |
729 | if (flags & MSG_TRUNC) | |
730 | copied = skb->len; | |
731 | done: | |
732 | skb_free_datagram(sk, skb); | |
5418c692 JJ |
733 | out: |
734 | if (err) | |
735 | return err; | |
736 | return copied; | |
1da177e4 LT |
737 | } |
738 | ||
739 | static int raw_init(struct sock *sk) | |
740 | { | |
741 | struct raw_sock *rp = raw_sk(sk); | |
742 | ||
c720c7e8 | 743 | if (inet_sk(sk)->inet_num == IPPROTO_ICMP) |
1da177e4 LT |
744 | memset(&rp->filter, 0, sizeof(rp->filter)); |
745 | return 0; | |
746 | } | |
747 | ||
748 | static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen) | |
749 | { | |
750 | if (optlen > sizeof(struct icmp_filter)) | |
751 | optlen = sizeof(struct icmp_filter); | |
752 | if (copy_from_user(&raw_sk(sk)->filter, optval, optlen)) | |
753 | return -EFAULT; | |
754 | return 0; | |
755 | } | |
756 | ||
757 | static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen) | |
758 | { | |
759 | int len, ret = -EFAULT; | |
760 | ||
761 | if (get_user(len, optlen)) | |
762 | goto out; | |
763 | ret = -EINVAL; | |
764 | if (len < 0) | |
765 | goto out; | |
766 | if (len > sizeof(struct icmp_filter)) | |
767 | len = sizeof(struct icmp_filter); | |
768 | ret = -EFAULT; | |
769 | if (put_user(len, optlen) || | |
770 | copy_to_user(optval, &raw_sk(sk)->filter, len)) | |
771 | goto out; | |
772 | ret = 0; | |
773 | out: return ret; | |
774 | } | |
775 | ||
3fdadf7d | 776 | static int do_raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 777 | char __user *optval, unsigned int optlen) |
1da177e4 | 778 | { |
1da177e4 | 779 | if (optname == ICMP_FILTER) { |
c720c7e8 | 780 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
781 | return -EOPNOTSUPP; |
782 | else | |
783 | return raw_seticmpfilter(sk, optval, optlen); | |
784 | } | |
785 | return -ENOPROTOOPT; | |
786 | } | |
787 | ||
3fdadf7d | 788 | static int raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 789 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
790 | { |
791 | if (level != SOL_RAW) | |
3fdadf7d DM |
792 | return ip_setsockopt(sk, level, optname, optval, optlen); |
793 | return do_raw_setsockopt(sk, level, optname, optval, optlen); | |
794 | } | |
1da177e4 | 795 | |
3fdadf7d DM |
796 | #ifdef CONFIG_COMPAT |
797 | static int compat_raw_setsockopt(struct sock *sk, int level, int optname, | |
b7058842 | 798 | char __user *optval, unsigned int optlen) |
3fdadf7d DM |
799 | { |
800 | if (level != SOL_RAW) | |
543d9cfe | 801 | return compat_ip_setsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
802 | return do_raw_setsockopt(sk, level, optname, optval, optlen); |
803 | } | |
804 | #endif | |
805 | ||
806 | static int do_raw_getsockopt(struct sock *sk, int level, int optname, | |
807 | char __user *optval, int __user *optlen) | |
808 | { | |
1da177e4 | 809 | if (optname == ICMP_FILTER) { |
c720c7e8 | 810 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
811 | return -EOPNOTSUPP; |
812 | else | |
813 | return raw_geticmpfilter(sk, optval, optlen); | |
814 | } | |
815 | return -ENOPROTOOPT; | |
816 | } | |
817 | ||
3fdadf7d DM |
818 | static int raw_getsockopt(struct sock *sk, int level, int optname, |
819 | char __user *optval, int __user *optlen) | |
820 | { | |
821 | if (level != SOL_RAW) | |
822 | return ip_getsockopt(sk, level, optname, optval, optlen); | |
823 | return do_raw_getsockopt(sk, level, optname, optval, optlen); | |
824 | } | |
825 | ||
826 | #ifdef CONFIG_COMPAT | |
827 | static int compat_raw_getsockopt(struct sock *sk, int level, int optname, | |
543d9cfe | 828 | char __user *optval, int __user *optlen) |
3fdadf7d DM |
829 | { |
830 | if (level != SOL_RAW) | |
543d9cfe | 831 | return compat_ip_getsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
832 | return do_raw_getsockopt(sk, level, optname, optval, optlen); |
833 | } | |
834 | #endif | |
835 | ||
1da177e4 LT |
836 | static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg) |
837 | { | |
838 | switch (cmd) { | |
4500ebf8 JP |
839 | case SIOCOUTQ: { |
840 | int amount = sk_wmem_alloc_get(sk); | |
31e6d363 | 841 | |
4500ebf8 JP |
842 | return put_user(amount, (int __user *)arg); |
843 | } | |
844 | case SIOCINQ: { | |
845 | struct sk_buff *skb; | |
846 | int amount = 0; | |
847 | ||
848 | spin_lock_bh(&sk->sk_receive_queue.lock); | |
849 | skb = skb_peek(&sk->sk_receive_queue); | |
850 | if (skb != NULL) | |
851 | amount = skb->len; | |
852 | spin_unlock_bh(&sk->sk_receive_queue.lock); | |
853 | return put_user(amount, (int __user *)arg); | |
854 | } | |
1da177e4 | 855 | |
4500ebf8 | 856 | default: |
1da177e4 | 857 | #ifdef CONFIG_IP_MROUTE |
4500ebf8 | 858 | return ipmr_ioctl(sk, cmd, (void __user *)arg); |
1da177e4 | 859 | #else |
4500ebf8 | 860 | return -ENOIOCTLCMD; |
1da177e4 LT |
861 | #endif |
862 | } | |
863 | } | |
864 | ||
709b46e8 EB |
865 | #ifdef CONFIG_COMPAT |
866 | static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg) | |
867 | { | |
868 | switch (cmd) { | |
869 | case SIOCOUTQ: | |
870 | case SIOCINQ: | |
871 | return -ENOIOCTLCMD; | |
872 | default: | |
873 | #ifdef CONFIG_IP_MROUTE | |
874 | return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg)); | |
875 | #else | |
876 | return -ENOIOCTLCMD; | |
877 | #endif | |
878 | } | |
879 | } | |
880 | #endif | |
881 | ||
1da177e4 | 882 | struct proto raw_prot = { |
543d9cfe ACM |
883 | .name = "RAW", |
884 | .owner = THIS_MODULE, | |
885 | .close = raw_close, | |
22dd4850 | 886 | .destroy = raw_destroy, |
543d9cfe ACM |
887 | .connect = ip4_datagram_connect, |
888 | .disconnect = udp_disconnect, | |
889 | .ioctl = raw_ioctl, | |
890 | .init = raw_init, | |
891 | .setsockopt = raw_setsockopt, | |
892 | .getsockopt = raw_getsockopt, | |
893 | .sendmsg = raw_sendmsg, | |
894 | .recvmsg = raw_recvmsg, | |
895 | .bind = raw_bind, | |
896 | .backlog_rcv = raw_rcv_skb, | |
8141ed9f | 897 | .release_cb = ip4_datagram_release_cb, |
fc8717ba PE |
898 | .hash = raw_hash_sk, |
899 | .unhash = raw_unhash_sk, | |
543d9cfe | 900 | .obj_size = sizeof(struct raw_sock), |
fc8717ba | 901 | .h.raw_hash = &raw_v4_hashinfo, |
3fdadf7d | 902 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
903 | .compat_setsockopt = compat_raw_setsockopt, |
904 | .compat_getsockopt = compat_raw_getsockopt, | |
709b46e8 | 905 | .compat_ioctl = compat_raw_ioctl, |
3fdadf7d | 906 | #endif |
1da177e4 LT |
907 | }; |
908 | ||
909 | #ifdef CONFIG_PROC_FS | |
1da177e4 LT |
910 | static struct sock *raw_get_first(struct seq_file *seq) |
911 | { | |
912 | struct sock *sk; | |
5a5f3a8d | 913 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 | 914 | |
b673e4df PE |
915 | for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE; |
916 | ++state->bucket) { | |
b67bfe0d | 917 | sk_for_each(sk, &state->h->ht[state->bucket]) |
1218854a | 918 | if (sock_net(sk) == seq_file_net(seq)) |
1da177e4 LT |
919 | goto found; |
920 | } | |
921 | sk = NULL; | |
922 | found: | |
923 | return sk; | |
924 | } | |
925 | ||
926 | static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk) | |
927 | { | |
5a5f3a8d | 928 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 LT |
929 | |
930 | do { | |
931 | sk = sk_next(sk); | |
932 | try_again: | |
933 | ; | |
1218854a | 934 | } while (sk && sock_net(sk) != seq_file_net(seq)); |
1da177e4 | 935 | |
b673e4df | 936 | if (!sk && ++state->bucket < RAW_HTABLE_SIZE) { |
42a73808 | 937 | sk = sk_head(&state->h->ht[state->bucket]); |
1da177e4 LT |
938 | goto try_again; |
939 | } | |
940 | return sk; | |
941 | } | |
942 | ||
943 | static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos) | |
944 | { | |
945 | struct sock *sk = raw_get_first(seq); | |
946 | ||
947 | if (sk) | |
948 | while (pos && (sk = raw_get_next(seq, sk)) != NULL) | |
949 | --pos; | |
950 | return pos ? NULL : sk; | |
951 | } | |
952 | ||
42a73808 | 953 | void *raw_seq_start(struct seq_file *seq, loff_t *pos) |
1da177e4 | 954 | { |
42a73808 PE |
955 | struct raw_iter_state *state = raw_seq_private(seq); |
956 | ||
957 | read_lock(&state->h->lock); | |
1da177e4 LT |
958 | return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; |
959 | } | |
42a73808 | 960 | EXPORT_SYMBOL_GPL(raw_seq_start); |
1da177e4 | 961 | |
42a73808 | 962 | void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
1da177e4 LT |
963 | { |
964 | struct sock *sk; | |
965 | ||
966 | if (v == SEQ_START_TOKEN) | |
967 | sk = raw_get_first(seq); | |
968 | else | |
969 | sk = raw_get_next(seq, v); | |
970 | ++*pos; | |
971 | return sk; | |
972 | } | |
42a73808 | 973 | EXPORT_SYMBOL_GPL(raw_seq_next); |
1da177e4 | 974 | |
42a73808 | 975 | void raw_seq_stop(struct seq_file *seq, void *v) |
1da177e4 | 976 | { |
42a73808 PE |
977 | struct raw_iter_state *state = raw_seq_private(seq); |
978 | ||
979 | read_unlock(&state->h->lock); | |
1da177e4 | 980 | } |
42a73808 | 981 | EXPORT_SYMBOL_GPL(raw_seq_stop); |
1da177e4 | 982 | |
8cd850ef | 983 | static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) |
1da177e4 LT |
984 | { |
985 | struct inet_sock *inet = inet_sk(sp); | |
c720c7e8 ED |
986 | __be32 dest = inet->inet_daddr, |
987 | src = inet->inet_rcv_saddr; | |
1da177e4 | 988 | __u16 destp = 0, |
c720c7e8 | 989 | srcp = inet->inet_num; |
1da177e4 | 990 | |
8cd850ef | 991 | seq_printf(seq, "%4d: %08X:%04X %08X:%04X" |
71338aa7 | 992 | " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %pK %d\n", |
e905a9ed | 993 | i, src, srcp, dest, destp, sp->sk_state, |
31e6d363 ED |
994 | sk_wmem_alloc_get(sp), |
995 | sk_rmem_alloc_get(sp), | |
a7cb5a49 EB |
996 | 0, 0L, 0, |
997 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), | |
998 | 0, sock_i_ino(sp), | |
33c732c3 | 999 | atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); |
1da177e4 LT |
1000 | } |
1001 | ||
1002 | static int raw_seq_show(struct seq_file *seq, void *v) | |
1003 | { | |
1da177e4 | 1004 | if (v == SEQ_START_TOKEN) |
8cd850ef DL |
1005 | seq_printf(seq, " sl local_address rem_address st tx_queue " |
1006 | "rx_queue tr tm->when retrnsmt uid timeout " | |
cb61cb9b | 1007 | "inode ref pointer drops\n"); |
8cd850ef DL |
1008 | else |
1009 | raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket); | |
1da177e4 LT |
1010 | return 0; |
1011 | } | |
1012 | ||
f690808e | 1013 | static const struct seq_operations raw_seq_ops = { |
1da177e4 LT |
1014 | .start = raw_seq_start, |
1015 | .next = raw_seq_next, | |
1016 | .stop = raw_seq_stop, | |
1017 | .show = raw_seq_show, | |
1018 | }; | |
1019 | ||
3046d767 DL |
1020 | int raw_seq_open(struct inode *ino, struct file *file, |
1021 | struct raw_hashinfo *h, const struct seq_operations *ops) | |
1da177e4 | 1022 | { |
f51d599f | 1023 | int err; |
42a73808 PE |
1024 | struct raw_iter_state *i; |
1025 | ||
3046d767 | 1026 | err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state)); |
f51d599f PE |
1027 | if (err < 0) |
1028 | return err; | |
42a73808 | 1029 | |
f51d599f | 1030 | i = raw_seq_private((struct seq_file *)file->private_data); |
42a73808 | 1031 | i->h = h; |
42a73808 PE |
1032 | return 0; |
1033 | } | |
1034 | EXPORT_SYMBOL_GPL(raw_seq_open); | |
1035 | ||
1036 | static int raw_v4_seq_open(struct inode *inode, struct file *file) | |
1037 | { | |
3046d767 | 1038 | return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops); |
1da177e4 LT |
1039 | } |
1040 | ||
9a32144e | 1041 | static const struct file_operations raw_seq_fops = { |
1da177e4 | 1042 | .owner = THIS_MODULE, |
42a73808 | 1043 | .open = raw_v4_seq_open, |
1da177e4 LT |
1044 | .read = seq_read, |
1045 | .llseek = seq_lseek, | |
f51d599f | 1046 | .release = seq_release_net, |
1da177e4 LT |
1047 | }; |
1048 | ||
a308da16 | 1049 | static __net_init int raw_init_net(struct net *net) |
1da177e4 | 1050 | { |
d4beaa66 | 1051 | if (!proc_create("raw", S_IRUGO, net->proc_net, &raw_seq_fops)) |
1da177e4 | 1052 | return -ENOMEM; |
a308da16 | 1053 | |
1da177e4 LT |
1054 | return 0; |
1055 | } | |
1056 | ||
a308da16 PE |
1057 | static __net_exit void raw_exit_net(struct net *net) |
1058 | { | |
ece31ffd | 1059 | remove_proc_entry("raw", net->proc_net); |
a308da16 PE |
1060 | } |
1061 | ||
1062 | static __net_initdata struct pernet_operations raw_net_ops = { | |
1063 | .init = raw_init_net, | |
1064 | .exit = raw_exit_net, | |
1065 | }; | |
1066 | ||
1067 | int __init raw_proc_init(void) | |
1068 | { | |
1069 | return register_pernet_subsys(&raw_net_ops); | |
1070 | } | |
1071 | ||
1da177e4 LT |
1072 | void __init raw_proc_exit(void) |
1073 | { | |
a308da16 | 1074 | unregister_pernet_subsys(&raw_net_ops); |
1da177e4 LT |
1075 | } |
1076 | #endif /* CONFIG_PROC_FS */ |