Commit | Line | Data |
---|---|---|
ba113a94 RDC |
1 | /* |
2 | * File: socket.c | |
3 | * | |
4 | * Phonet sockets | |
5 | * | |
6 | * Copyright (C) 2008 Nokia Corporation. | |
7 | * | |
8 | * Contact: Remi Denis-Courmont <remi.denis-courmont@nokia.com> | |
9 | * Original author: Sakari Ailus <sakari.ailus@nokia.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * version 2 as published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
23 | * 02110-1301 USA | |
24 | */ | |
25 | ||
26 | #include <linux/kernel.h> | |
27 | #include <linux/net.h> | |
9995a32b | 28 | #include <linux/poll.h> |
ba113a94 RDC |
29 | #include <net/sock.h> |
30 | #include <net/tcp_states.h> | |
31 | ||
32 | #include <linux/phonet.h> | |
33 | #include <net/phonet/phonet.h> | |
9995a32b | 34 | #include <net/phonet/pep.h> |
ba113a94 RDC |
35 | #include <net/phonet/pn_dev.h> |
36 | ||
37 | static int pn_socket_release(struct socket *sock) | |
38 | { | |
39 | struct sock *sk = sock->sk; | |
40 | ||
41 | if (sk) { | |
42 | sock->sk = NULL; | |
43 | sk->sk_prot->close(sk, 0); | |
44 | } | |
45 | return 0; | |
46 | } | |
47 | ||
6b0d07ba RDC |
48 | #define PN_HASHSIZE 16 |
49 | #define PN_HASHMASK (PN_HASHSIZE-1) | |
50 | ||
51 | ||
ba113a94 | 52 | static struct { |
6b0d07ba | 53 | struct hlist_head hlist[PN_HASHSIZE]; |
ba113a94 | 54 | spinlock_t lock; |
6b0d07ba RDC |
55 | } pnsocks; |
56 | ||
57 | void __init pn_sock_init(void) | |
58 | { | |
59 | unsigned i; | |
60 | ||
61 | for (i = 0; i < PN_HASHSIZE; i++) | |
62 | INIT_HLIST_HEAD(pnsocks.hlist + i); | |
63 | spin_lock_init(&pnsocks.lock); | |
64 | } | |
65 | ||
66 | static struct hlist_head *pn_hash_list(u16 obj) | |
67 | { | |
68 | return pnsocks.hlist + (obj & PN_HASHMASK); | |
69 | } | |
ba113a94 RDC |
70 | |
71 | /* | |
72 | * Find address based on socket address, match only certain fields. | |
73 | * Also grab sock if it was found. Remember to sock_put it later. | |
74 | */ | |
52404881 | 75 | struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *spn) |
ba113a94 RDC |
76 | { |
77 | struct hlist_node *node; | |
78 | struct sock *sknode; | |
79 | struct sock *rval = NULL; | |
80 | u16 obj = pn_sockaddr_get_object(spn); | |
81 | u8 res = spn->spn_resource; | |
6b0d07ba | 82 | struct hlist_head *hlist = pn_hash_list(obj); |
ba113a94 RDC |
83 | |
84 | spin_lock_bh(&pnsocks.lock); | |
85 | ||
6b0d07ba | 86 | sk_for_each(sknode, node, hlist) { |
ba113a94 RDC |
87 | struct pn_sock *pn = pn_sk(sknode); |
88 | BUG_ON(!pn->sobject); /* unbound socket */ | |
89 | ||
52404881 RDC |
90 | if (!net_eq(sock_net(sknode), net)) |
91 | continue; | |
ba113a94 RDC |
92 | if (pn_port(obj)) { |
93 | /* Look up socket by port */ | |
94 | if (pn_port(pn->sobject) != pn_port(obj)) | |
95 | continue; | |
96 | } else { | |
97 | /* If port is zero, look up by resource */ | |
98 | if (pn->resource != res) | |
99 | continue; | |
100 | } | |
f64f9e71 JP |
101 | if (pn_addr(pn->sobject) && |
102 | pn_addr(pn->sobject) != pn_addr(obj)) | |
ba113a94 RDC |
103 | continue; |
104 | ||
105 | rval = sknode; | |
106 | sock_hold(sknode); | |
107 | break; | |
108 | } | |
109 | ||
110 | spin_unlock_bh(&pnsocks.lock); | |
111 | ||
112 | return rval; | |
f14001fc RDC |
113 | } |
114 | ||
115 | /* Deliver a broadcast packet (only in bottom-half) */ | |
116 | void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb) | |
117 | { | |
6b0d07ba RDC |
118 | struct hlist_head *hlist = pnsocks.hlist; |
119 | unsigned h; | |
f14001fc RDC |
120 | |
121 | spin_lock(&pnsocks.lock); | |
6b0d07ba RDC |
122 | for (h = 0; h < PN_HASHSIZE; h++) { |
123 | struct hlist_node *node; | |
124 | struct sock *sknode; | |
f14001fc | 125 | |
6b0d07ba RDC |
126 | sk_for_each(sknode, node, hlist) { |
127 | struct sk_buff *clone; | |
ba113a94 | 128 | |
6b0d07ba RDC |
129 | if (!net_eq(sock_net(sknode), net)) |
130 | continue; | |
131 | if (!sock_flag(sknode, SOCK_BROADCAST)) | |
132 | continue; | |
133 | ||
134 | clone = skb_clone(skb, GFP_ATOMIC); | |
135 | if (clone) { | |
136 | sock_hold(sknode); | |
137 | sk_receive_skb(sknode, clone, 0); | |
138 | } | |
21912d1c | 139 | } |
6b0d07ba | 140 | hlist++; |
f14001fc RDC |
141 | } |
142 | spin_unlock(&pnsocks.lock); | |
ba113a94 RDC |
143 | } |
144 | ||
145 | void pn_sock_hash(struct sock *sk) | |
146 | { | |
6b0d07ba RDC |
147 | struct hlist_head *hlist = pn_hash_list(pn_sk(sk)->sobject); |
148 | ||
ba113a94 | 149 | spin_lock_bh(&pnsocks.lock); |
6b0d07ba | 150 | sk_add_node(sk, hlist); |
ba113a94 RDC |
151 | spin_unlock_bh(&pnsocks.lock); |
152 | } | |
153 | EXPORT_SYMBOL(pn_sock_hash); | |
154 | ||
155 | void pn_sock_unhash(struct sock *sk) | |
156 | { | |
157 | spin_lock_bh(&pnsocks.lock); | |
158 | sk_del_node_init(sk); | |
159 | spin_unlock_bh(&pnsocks.lock); | |
160 | } | |
161 | EXPORT_SYMBOL(pn_sock_unhash); | |
162 | ||
582b0b61 RDC |
163 | static DEFINE_MUTEX(port_mutex); |
164 | ||
ba113a94 RDC |
165 | static int pn_socket_bind(struct socket *sock, struct sockaddr *addr, int len) |
166 | { | |
167 | struct sock *sk = sock->sk; | |
168 | struct pn_sock *pn = pn_sk(sk); | |
169 | struct sockaddr_pn *spn = (struct sockaddr_pn *)addr; | |
170 | int err; | |
171 | u16 handle; | |
172 | u8 saddr; | |
173 | ||
174 | if (sk->sk_prot->bind) | |
175 | return sk->sk_prot->bind(sk, addr, len); | |
176 | ||
177 | if (len < sizeof(struct sockaddr_pn)) | |
178 | return -EINVAL; | |
179 | if (spn->spn_family != AF_PHONET) | |
180 | return -EAFNOSUPPORT; | |
181 | ||
182 | handle = pn_sockaddr_get_object((struct sockaddr_pn *)addr); | |
183 | saddr = pn_addr(handle); | |
52404881 | 184 | if (saddr && phonet_address_lookup(sock_net(sk), saddr)) |
ba113a94 RDC |
185 | return -EADDRNOTAVAIL; |
186 | ||
187 | lock_sock(sk); | |
188 | if (sk->sk_state != TCP_CLOSE || pn_port(pn->sobject)) { | |
189 | err = -EINVAL; /* attempt to rebind */ | |
190 | goto out; | |
191 | } | |
582b0b61 RDC |
192 | WARN_ON(sk_hashed(sk)); |
193 | mutex_lock(&port_mutex); | |
ba113a94 RDC |
194 | err = sk->sk_prot->get_port(sk, pn_port(handle)); |
195 | if (err) | |
582b0b61 | 196 | goto out_port; |
ba113a94 RDC |
197 | |
198 | /* get_port() sets the port, bind() sets the address if applicable */ | |
199 | pn->sobject = pn_object(saddr, pn_port(pn->sobject)); | |
200 | pn->resource = spn->spn_resource; | |
201 | ||
202 | /* Enable RX on the socket */ | |
203 | sk->sk_prot->hash(sk); | |
582b0b61 RDC |
204 | out_port: |
205 | mutex_unlock(&port_mutex); | |
ba113a94 RDC |
206 | out: |
207 | release_sock(sk); | |
208 | return err; | |
209 | } | |
210 | ||
211 | static int pn_socket_autobind(struct socket *sock) | |
212 | { | |
213 | struct sockaddr_pn sa; | |
214 | int err; | |
215 | ||
216 | memset(&sa, 0, sizeof(sa)); | |
217 | sa.spn_family = AF_PHONET; | |
218 | err = pn_socket_bind(sock, (struct sockaddr *)&sa, | |
219 | sizeof(struct sockaddr_pn)); | |
220 | if (err != -EINVAL) | |
221 | return err; | |
222 | BUG_ON(!pn_port(pn_sk(sock->sk)->sobject)); | |
223 | return 0; /* socket was already bound */ | |
224 | } | |
225 | ||
9995a32b RDC |
226 | static int pn_socket_accept(struct socket *sock, struct socket *newsock, |
227 | int flags) | |
228 | { | |
229 | struct sock *sk = sock->sk; | |
230 | struct sock *newsk; | |
231 | int err; | |
232 | ||
233 | newsk = sk->sk_prot->accept(sk, flags, &err); | |
234 | if (!newsk) | |
235 | return err; | |
236 | ||
237 | lock_sock(newsk); | |
238 | sock_graft(newsk, newsock); | |
239 | newsock->state = SS_CONNECTED; | |
240 | release_sock(newsk); | |
241 | return 0; | |
242 | } | |
243 | ||
ba113a94 RDC |
244 | static int pn_socket_getname(struct socket *sock, struct sockaddr *addr, |
245 | int *sockaddr_len, int peer) | |
246 | { | |
247 | struct sock *sk = sock->sk; | |
248 | struct pn_sock *pn = pn_sk(sk); | |
249 | ||
250 | memset(addr, 0, sizeof(struct sockaddr_pn)); | |
251 | addr->sa_family = AF_PHONET; | |
252 | if (!peer) /* Race with bind() here is userland's problem. */ | |
253 | pn_sockaddr_set_object((struct sockaddr_pn *)addr, | |
254 | pn->sobject); | |
255 | ||
256 | *sockaddr_len = sizeof(struct sockaddr_pn); | |
257 | return 0; | |
258 | } | |
259 | ||
9995a32b RDC |
260 | static unsigned int pn_socket_poll(struct file *file, struct socket *sock, |
261 | poll_table *wait) | |
262 | { | |
263 | struct sock *sk = sock->sk; | |
264 | struct pep_sock *pn = pep_sk(sk); | |
265 | unsigned int mask = 0; | |
266 | ||
267 | poll_wait(file, &sock->wait, wait); | |
268 | ||
269 | switch (sk->sk_state) { | |
270 | case TCP_LISTEN: | |
271 | return hlist_empty(&pn->ackq) ? 0 : POLLIN; | |
272 | case TCP_CLOSE: | |
273 | return POLLERR; | |
274 | } | |
275 | ||
276 | if (!skb_queue_empty(&sk->sk_receive_queue)) | |
277 | mask |= POLLIN | POLLRDNORM; | |
c41bd97f RDC |
278 | if (!skb_queue_empty(&pn->ctrlreq_queue)) |
279 | mask |= POLLPRI; | |
280 | if (!mask && sk->sk_state == TCP_CLOSE_WAIT) | |
9995a32b RDC |
281 | return POLLHUP; |
282 | ||
be677730 | 283 | if (sk->sk_state == TCP_ESTABLISHED && atomic_read(&pn->tx_credits)) |
9995a32b RDC |
284 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; |
285 | ||
286 | return mask; | |
287 | } | |
288 | ||
ba113a94 RDC |
289 | static int pn_socket_ioctl(struct socket *sock, unsigned int cmd, |
290 | unsigned long arg) | |
291 | { | |
292 | struct sock *sk = sock->sk; | |
293 | struct pn_sock *pn = pn_sk(sk); | |
294 | ||
295 | if (cmd == SIOCPNGETOBJECT) { | |
296 | struct net_device *dev; | |
297 | u16 handle; | |
298 | u8 saddr; | |
299 | ||
300 | if (get_user(handle, (__u16 __user *)arg)) | |
301 | return -EFAULT; | |
302 | ||
303 | lock_sock(sk); | |
304 | if (sk->sk_bound_dev_if) | |
305 | dev = dev_get_by_index(sock_net(sk), | |
306 | sk->sk_bound_dev_if); | |
307 | else | |
308 | dev = phonet_device_get(sock_net(sk)); | |
309 | if (dev && (dev->flags & IFF_UP)) | |
310 | saddr = phonet_address_get(dev, pn_addr(handle)); | |
311 | else | |
312 | saddr = PN_NO_ADDR; | |
313 | release_sock(sk); | |
314 | ||
315 | if (dev) | |
316 | dev_put(dev); | |
317 | if (saddr == PN_NO_ADDR) | |
318 | return -EHOSTUNREACH; | |
319 | ||
320 | handle = pn_object(saddr, pn_port(pn->sobject)); | |
321 | return put_user(handle, (__u16 __user *)arg); | |
322 | } | |
323 | ||
324 | return sk->sk_prot->ioctl(sk, cmd, arg); | |
325 | } | |
326 | ||
9995a32b RDC |
327 | static int pn_socket_listen(struct socket *sock, int backlog) |
328 | { | |
329 | struct sock *sk = sock->sk; | |
330 | int err = 0; | |
331 | ||
332 | if (sock->state != SS_UNCONNECTED) | |
333 | return -EINVAL; | |
334 | if (pn_socket_autobind(sock)) | |
335 | return -ENOBUFS; | |
336 | ||
337 | lock_sock(sk); | |
338 | if (sk->sk_state != TCP_CLOSE) { | |
339 | err = -EINVAL; | |
340 | goto out; | |
341 | } | |
342 | ||
343 | sk->sk_state = TCP_LISTEN; | |
344 | sk->sk_ack_backlog = 0; | |
345 | sk->sk_max_ack_backlog = backlog; | |
346 | out: | |
347 | release_sock(sk); | |
348 | return err; | |
349 | } | |
350 | ||
ba113a94 RDC |
351 | static int pn_socket_sendmsg(struct kiocb *iocb, struct socket *sock, |
352 | struct msghdr *m, size_t total_len) | |
353 | { | |
354 | struct sock *sk = sock->sk; | |
355 | ||
356 | if (pn_socket_autobind(sock)) | |
357 | return -EAGAIN; | |
358 | ||
359 | return sk->sk_prot->sendmsg(iocb, sk, m, total_len); | |
360 | } | |
361 | ||
362 | const struct proto_ops phonet_dgram_ops = { | |
363 | .family = AF_PHONET, | |
364 | .owner = THIS_MODULE, | |
365 | .release = pn_socket_release, | |
366 | .bind = pn_socket_bind, | |
367 | .connect = sock_no_connect, | |
368 | .socketpair = sock_no_socketpair, | |
369 | .accept = sock_no_accept, | |
370 | .getname = pn_socket_getname, | |
371 | .poll = datagram_poll, | |
372 | .ioctl = pn_socket_ioctl, | |
373 | .listen = sock_no_listen, | |
374 | .shutdown = sock_no_shutdown, | |
375 | .setsockopt = sock_no_setsockopt, | |
376 | .getsockopt = sock_no_getsockopt, | |
377 | #ifdef CONFIG_COMPAT | |
378 | .compat_setsockopt = sock_no_setsockopt, | |
379 | .compat_getsockopt = sock_no_getsockopt, | |
380 | #endif | |
381 | .sendmsg = pn_socket_sendmsg, | |
382 | .recvmsg = sock_common_recvmsg, | |
383 | .mmap = sock_no_mmap, | |
384 | .sendpage = sock_no_sendpage, | |
385 | }; | |
386 | ||
9995a32b RDC |
387 | const struct proto_ops phonet_stream_ops = { |
388 | .family = AF_PHONET, | |
389 | .owner = THIS_MODULE, | |
390 | .release = pn_socket_release, | |
391 | .bind = pn_socket_bind, | |
392 | .connect = sock_no_connect, | |
393 | .socketpair = sock_no_socketpair, | |
394 | .accept = pn_socket_accept, | |
395 | .getname = pn_socket_getname, | |
396 | .poll = pn_socket_poll, | |
397 | .ioctl = pn_socket_ioctl, | |
398 | .listen = pn_socket_listen, | |
399 | .shutdown = sock_no_shutdown, | |
02a47617 RDC |
400 | .setsockopt = sock_common_setsockopt, |
401 | .getsockopt = sock_common_getsockopt, | |
9995a32b | 402 | #ifdef CONFIG_COMPAT |
02a47617 RDC |
403 | .compat_setsockopt = compat_sock_common_setsockopt, |
404 | .compat_getsockopt = compat_sock_common_getsockopt, | |
9995a32b RDC |
405 | #endif |
406 | .sendmsg = pn_socket_sendmsg, | |
407 | .recvmsg = sock_common_recvmsg, | |
408 | .mmap = sock_no_mmap, | |
409 | .sendpage = sock_no_sendpage, | |
410 | }; | |
411 | EXPORT_SYMBOL(phonet_stream_ops); | |
412 | ||
ba113a94 RDC |
413 | /* allocate port for a socket */ |
414 | int pn_sock_get_port(struct sock *sk, unsigned short sport) | |
415 | { | |
416 | static int port_cur; | |
52404881 | 417 | struct net *net = sock_net(sk); |
ba113a94 RDC |
418 | struct pn_sock *pn = pn_sk(sk); |
419 | struct sockaddr_pn try_sa; | |
420 | struct sock *tmpsk; | |
421 | ||
422 | memset(&try_sa, 0, sizeof(struct sockaddr_pn)); | |
423 | try_sa.spn_family = AF_PHONET; | |
582b0b61 | 424 | WARN_ON(!mutex_is_locked(&port_mutex)); |
ba113a94 RDC |
425 | if (!sport) { |
426 | /* search free port */ | |
87ab4e20 | 427 | int port, pmin, pmax; |
ba113a94 | 428 | |
87ab4e20 | 429 | phonet_get_local_port_range(&pmin, &pmax); |
ba113a94 RDC |
430 | for (port = pmin; port <= pmax; port++) { |
431 | port_cur++; | |
432 | if (port_cur < pmin || port_cur > pmax) | |
433 | port_cur = pmin; | |
434 | ||
435 | pn_sockaddr_set_port(&try_sa, port_cur); | |
52404881 | 436 | tmpsk = pn_find_sock_by_sa(net, &try_sa); |
ba113a94 RDC |
437 | if (tmpsk == NULL) { |
438 | sport = port_cur; | |
439 | goto found; | |
440 | } else | |
441 | sock_put(tmpsk); | |
442 | } | |
443 | } else { | |
444 | /* try to find specific port */ | |
445 | pn_sockaddr_set_port(&try_sa, sport); | |
52404881 | 446 | tmpsk = pn_find_sock_by_sa(net, &try_sa); |
ba113a94 RDC |
447 | if (tmpsk == NULL) |
448 | /* No sock there! We can use that port... */ | |
449 | goto found; | |
450 | else | |
451 | sock_put(tmpsk); | |
452 | } | |
ba113a94 RDC |
453 | /* the port must be in use already */ |
454 | return -EADDRINUSE; | |
455 | ||
456 | found: | |
ba113a94 RDC |
457 | pn->sobject = pn_object(pn_addr(pn->sobject), sport); |
458 | return 0; | |
459 | } | |
460 | EXPORT_SYMBOL(pn_sock_get_port); | |
c1dc13e9 | 461 | |
ae6e2aef | 462 | #ifdef CONFIG_PROC_FS |
c1dc13e9 RDC |
463 | static struct sock *pn_sock_get_idx(struct seq_file *seq, loff_t pos) |
464 | { | |
465 | struct net *net = seq_file_net(seq); | |
6b0d07ba | 466 | struct hlist_head *hlist = pnsocks.hlist; |
c1dc13e9 RDC |
467 | struct hlist_node *node; |
468 | struct sock *sknode; | |
6b0d07ba | 469 | unsigned h; |
c1dc13e9 | 470 | |
6b0d07ba RDC |
471 | for (h = 0; h < PN_HASHSIZE; h++) { |
472 | sk_for_each(sknode, node, hlist) { | |
473 | if (!net_eq(net, sock_net(sknode))) | |
474 | continue; | |
475 | if (!pos) | |
476 | return sknode; | |
477 | pos--; | |
478 | } | |
479 | hlist++; | |
c1dc13e9 RDC |
480 | } |
481 | return NULL; | |
482 | } | |
483 | ||
484 | static struct sock *pn_sock_get_next(struct seq_file *seq, struct sock *sk) | |
485 | { | |
486 | struct net *net = seq_file_net(seq); | |
487 | ||
488 | do | |
489 | sk = sk_next(sk); | |
490 | while (sk && !net_eq(net, sock_net(sk))); | |
491 | ||
492 | return sk; | |
493 | } | |
494 | ||
495 | static void *pn_sock_seq_start(struct seq_file *seq, loff_t *pos) | |
496 | __acquires(pnsocks.lock) | |
497 | { | |
498 | spin_lock_bh(&pnsocks.lock); | |
499 | return *pos ? pn_sock_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; | |
500 | } | |
501 | ||
502 | static void *pn_sock_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
503 | { | |
504 | struct sock *sk; | |
505 | ||
506 | if (v == SEQ_START_TOKEN) | |
507 | sk = pn_sock_get_idx(seq, 0); | |
508 | else | |
509 | sk = pn_sock_get_next(seq, v); | |
510 | (*pos)++; | |
511 | return sk; | |
512 | } | |
513 | ||
514 | static void pn_sock_seq_stop(struct seq_file *seq, void *v) | |
515 | __releases(pnsocks.lock) | |
516 | { | |
517 | spin_unlock_bh(&pnsocks.lock); | |
518 | } | |
519 | ||
520 | static int pn_sock_seq_show(struct seq_file *seq, void *v) | |
521 | { | |
522 | int len; | |
523 | ||
524 | if (v == SEQ_START_TOKEN) | |
525 | seq_printf(seq, "%s%n", "pt loc rem rs st tx_queue rx_queue " | |
526 | " uid inode ref pointer drops", &len); | |
527 | else { | |
528 | struct sock *sk = v; | |
529 | struct pn_sock *pn = pn_sk(sk); | |
530 | ||
531 | seq_printf(seq, "%2d %04X:%04X:%02X %02X %08X:%08X %5d %lu " | |
532 | "%d %p %d%n", | |
533 | sk->sk_protocol, pn->sobject, 0, pn->resource, | |
534 | sk->sk_state, | |
535 | sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk), | |
536 | sock_i_uid(sk), sock_i_ino(sk), | |
537 | atomic_read(&sk->sk_refcnt), sk, | |
538 | atomic_read(&sk->sk_drops), &len); | |
539 | } | |
540 | seq_printf(seq, "%*s\n", 127 - len, ""); | |
541 | return 0; | |
542 | } | |
543 | ||
544 | static const struct seq_operations pn_sock_seq_ops = { | |
545 | .start = pn_sock_seq_start, | |
546 | .next = pn_sock_seq_next, | |
547 | .stop = pn_sock_seq_stop, | |
548 | .show = pn_sock_seq_show, | |
549 | }; | |
550 | ||
551 | static int pn_sock_open(struct inode *inode, struct file *file) | |
552 | { | |
cb7d9e7f RDC |
553 | return seq_open_net(inode, file, &pn_sock_seq_ops, |
554 | sizeof(struct seq_net_private)); | |
c1dc13e9 RDC |
555 | } |
556 | ||
557 | const struct file_operations pn_sock_seq_fops = { | |
558 | .owner = THIS_MODULE, | |
559 | .open = pn_sock_open, | |
560 | .read = seq_read, | |
561 | .llseek = seq_lseek, | |
cb7d9e7f | 562 | .release = seq_release_net, |
c1dc13e9 | 563 | }; |
ae6e2aef | 564 | #endif |