Blame view
net/atm/svc.c
16.4 KB
1da177e4c
|
1 2 3 |
/* net/atm/svc.c - ATM SVC sockets */ /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ |
99824461e
|
4 |
#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ |
1da177e4c
|
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
#include <linux/string.h> #include <linux/net.h> /* struct socket, struct proto_ops */ #include <linux/errno.h> /* error codes */ #include <linux/kernel.h> /* printk */ #include <linux/skbuff.h> #include <linux/wait.h> #include <linux/sched.h> /* jiffies and HZ */ #include <linux/fcntl.h> /* O_NONBLOCK */ #include <linux/init.h> #include <linux/atm.h> /* ATM stuff */ #include <linux/atmsap.h> #include <linux/atmsvc.h> #include <linux/atmdev.h> #include <linux/bitops.h> #include <net/sock.h> /* for sock_no_* */ |
b7d9371be
|
21 |
#include <linux/uaccess.h> |
bc3b2d7fb
|
22 |
#include <linux/export.h> |
1da177e4c
|
23 24 25 26 27 |
#include "resources.h" #include "common.h" /* common for PVCs and SVCs */ #include "signaling.h" #include "addr.h" |
b7d9371be
|
28 29 |
static int svc_create(struct net *net, struct socket *sock, int protocol, int kern); |
1da177e4c
|
30 |
|
1da177e4c
|
31 32 33 34 35 |
/* * Note: since all this is still nicely synchronized with the signaling demon, * there's no need to protect sleep loops with clis. If signaling is * moved into the kernel, that would change. */ |
b7d9371be
|
36 |
static int svc_shutdown(struct socket *sock, int how) |
1da177e4c
|
37 38 39 |
{ return 0; } |
1da177e4c
|
40 41 42 43 44 |
static void svc_disconnect(struct atm_vcc *vcc) { DEFINE_WAIT(wait); struct sk_buff *skb; struct sock *sk = sk_atm(vcc); |
b7d9371be
|
45 46 47 |
pr_debug("%p ", vcc); if (test_bit(ATM_VF_REGIS, &vcc->flags)) { |
aa3951451
|
48 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE); |
b7d9371be
|
49 50 |
sigd_enq(vcc, as_close, NULL, NULL, NULL); while (!test_bit(ATM_VF_RELEASED, &vcc->flags) && sigd) { |
1da177e4c
|
51 |
schedule(); |
aa3951451
|
52 |
prepare_to_wait(sk_sleep(sk), &wait, |
b7d9371be
|
53 |
TASK_UNINTERRUPTIBLE); |
1da177e4c
|
54 |
} |
aa3951451
|
55 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c
|
56 57 58 59 60 |
} /* beware - socket is still in use by atmsigd until the last as_indicate has been answered */ while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { atm_return(vcc, skb->truesize); |
522400623
|
61 62 |
pr_debug("LISTEN REL "); |
b7d9371be
|
63 |
sigd_enq2(NULL, as_reject, vcc, NULL, NULL, &vcc->qos, 0); |
1da177e4c
|
64 65 66 67 68 |
dev_kfree_skb(skb); } clear_bit(ATM_VF_REGIS, &vcc->flags); /* ... may retry later */ } |
1da177e4c
|
69 70 71 72 |
static int svc_release(struct socket *sock) { struct sock *sk = sock->sk; struct atm_vcc *vcc; |
b7d9371be
|
73 |
if (sk) { |
1da177e4c
|
74 |
vcc = ATM_SD(sock); |
99824461e
|
75 76 |
pr_debug("%p ", vcc); |
1da177e4c
|
77 |
clear_bit(ATM_VF_READY, &vcc->flags); |
b7d9371be
|
78 79 80 81 82 |
/* * VCC pointer is used as a reference, * so we must not free it (thereby subjecting it to re-use) * before all pending connections are closed */ |
1da177e4c
|
83 84 85 86 87 |
svc_disconnect(vcc); vcc_release(sock); } return 0; } |
b7d9371be
|
88 89 |
static int svc_bind(struct socket *sock, struct sockaddr *sockaddr, int sockaddr_len) |
1da177e4c
|
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 |
{ DEFINE_WAIT(wait); struct sock *sk = sock->sk; struct sockaddr_atmsvc *addr; struct atm_vcc *vcc; int error; if (sockaddr_len != sizeof(struct sockaddr_atmsvc)) return -EINVAL; lock_sock(sk); if (sock->state == SS_CONNECTED) { error = -EISCONN; goto out; } if (sock->state != SS_UNCONNECTED) { error = -EINVAL; goto out; } vcc = ATM_SD(sock); |
1da177e4c
|
109 110 111 112 113 |
addr = (struct sockaddr_atmsvc *) sockaddr; if (addr->sas_family != AF_ATMSVC) { error = -EAFNOSUPPORT; goto out; } |
b7d9371be
|
114 |
clear_bit(ATM_VF_BOUND, &vcc->flags); |
1da177e4c
|
115 116 |
/* failing rebind will kill old binding */ /* @@@ check memory (de)allocation on rebind */ |
b7d9371be
|
117 |
if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) { |
1da177e4c
|
118 119 120 121 122 |
error = -EBADFD; goto out; } vcc->local = *addr; set_bit(ATM_VF_WAITING, &vcc->flags); |
aa3951451
|
123 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE); |
b7d9371be
|
124 |
sigd_enq(vcc, as_bind, NULL, NULL, &vcc->local); |
1da177e4c
|
125 126 |
while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) { schedule(); |
aa3951451
|
127 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE); |
1da177e4c
|
128 |
} |
aa3951451
|
129 |
finish_wait(sk_sleep(sk), &wait); |
b7d9371be
|
130 |
clear_bit(ATM_VF_REGIS, &vcc->flags); /* doesn't count */ |
1da177e4c
|
131 132 133 134 |
if (!sigd) { error = -EUNATCH; goto out; } |
f7d57453d
|
135 |
if (!sk->sk_err) |
b7d9371be
|
136 |
set_bit(ATM_VF_BOUND, &vcc->flags); |
1da177e4c
|
137 138 139 140 141 |
error = -sk->sk_err; out: release_sock(sk); return error; } |
b7d9371be
|
142 143 |
static int svc_connect(struct socket *sock, struct sockaddr *sockaddr, int sockaddr_len, int flags) |
1da177e4c
|
144 145 146 147 148 149 |
{ DEFINE_WAIT(wait); struct sock *sk = sock->sk; struct sockaddr_atmsvc *addr; struct atm_vcc *vcc = ATM_SD(sock); int error; |
b7d9371be
|
150 151 |
pr_debug("%p ", vcc); |
1da177e4c
|
152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 |
lock_sock(sk); if (sockaddr_len != sizeof(struct sockaddr_atmsvc)) { error = -EINVAL; goto out; } switch (sock->state) { default: error = -EINVAL; goto out; case SS_CONNECTED: error = -EISCONN; goto out; case SS_CONNECTING: if (test_bit(ATM_VF_WAITING, &vcc->flags)) { error = -EALREADY; goto out; } sock->state = SS_UNCONNECTED; if (sk->sk_err) { error = -sk->sk_err; goto out; } break; case SS_UNCONNECTED: addr = (struct sockaddr_atmsvc *) sockaddr; if (addr->sas_family != AF_ATMSVC) { error = -EAFNOSUPPORT; goto out; } if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) { error = -EBADFD; goto out; } if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS || vcc->qos.rxtp.traffic_class == ATM_ANYCLASS) { error = -EINVAL; goto out; } if (!vcc->qos.txtp.traffic_class && !vcc->qos.rxtp.traffic_class) { error = -EINVAL; goto out; } vcc->remote = *addr; set_bit(ATM_VF_WAITING, &vcc->flags); |
aa3951451
|
198 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
b7d9371be
|
199 |
sigd_enq(vcc, as_connect, NULL, NULL, &vcc->remote); |
1da177e4c
|
200 |
if (flags & O_NONBLOCK) { |
aa3951451
|
201 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c
|
202 203 204 205 206 207 208 209 |
sock->state = SS_CONNECTING; error = -EINPROGRESS; goto out; } error = 0; while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) { schedule(); if (!signal_pending(current)) { |
aa3951451
|
210 |
prepare_to_wait(sk_sleep(sk), &wait, |
b7d9371be
|
211 |
TASK_INTERRUPTIBLE); |
1da177e4c
|
212 213 |
continue; } |
522400623
|
214 215 |
pr_debug("*ABORT* "); |
1da177e4c
|
216 217 218 219 |
/* * This is tricky: * Kernel ---close--> Demon * Kernel <--close--- Demon |
f7d57453d
|
220 |
* or |
1da177e4c
|
221 222 223 224 225 226 227 |
* Kernel ---close--> Demon * Kernel <--error--- Demon * or * Kernel ---close--> Demon * Kernel <--okay---- Demon * Kernel <--close--- Demon */ |
b7d9371be
|
228 |
sigd_enq(vcc, as_close, NULL, NULL, NULL); |
1da177e4c
|
229 |
while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) { |
aa3951451
|
230 |
prepare_to_wait(sk_sleep(sk), &wait, |
b7d9371be
|
231 |
TASK_INTERRUPTIBLE); |
1da177e4c
|
232 233 234 |
schedule(); } if (!sk->sk_err) |
b7d9371be
|
235 236 |
while (!test_bit(ATM_VF_RELEASED, &vcc->flags) && sigd) { |
aa3951451
|
237 |
prepare_to_wait(sk_sleep(sk), &wait, |
b7d9371be
|
238 |
TASK_INTERRUPTIBLE); |
1da177e4c
|
239 240 |
schedule(); } |
b7d9371be
|
241 242 243 |
clear_bit(ATM_VF_REGIS, &vcc->flags); clear_bit(ATM_VF_RELEASED, &vcc->flags); clear_bit(ATM_VF_CLOSE, &vcc->flags); |
1da177e4c
|
244 245 246 247 |
/* we're gone now but may connect later */ error = -EINTR; break; } |
aa3951451
|
248 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c
|
249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 |
if (error) goto out; if (!sigd) { error = -EUNATCH; goto out; } if (sk->sk_err) { error = -sk->sk_err; goto out; } } /* * Not supported yet * * #ifndef CONFIG_SINGLE_SIGITF */ vcc->qos.txtp.max_pcr = SELECT_TOP_PCR(vcc->qos.txtp); vcc->qos.txtp.pcr = 0; vcc->qos.txtp.min_pcr = 0; /* * #endif */ |
b7d9371be
|
271 272 |
error = vcc_connect(sock, vcc->itf, vcc->vpi, vcc->vci); if (!error) |
1da177e4c
|
273 274 |
sock->state = SS_CONNECTED; else |
b7d9371be
|
275 |
(void)svc_disconnect(vcc); |
1da177e4c
|
276 277 278 279 |
out: release_sock(sk); return error; } |
b7d9371be
|
280 |
static int svc_listen(struct socket *sock, int backlog) |
1da177e4c
|
281 282 283 284 285 |
{ DEFINE_WAIT(wait); struct sock *sk = sock->sk; struct atm_vcc *vcc = ATM_SD(sock); int error; |
99824461e
|
286 287 |
pr_debug("%p ", vcc); |
1da177e4c
|
288 289 |
lock_sock(sk); /* let server handle listen on unbound sockets */ |
b7d9371be
|
290 |
if (test_bit(ATM_VF_SESSION, &vcc->flags)) { |
1da177e4c
|
291 292 293 |
error = -EINVAL; goto out; } |
17b24b3c9
|
294 295 296 |
if (test_bit(ATM_VF_LISTEN, &vcc->flags)) { error = -EADDRINUSE; goto out; |
b7d9371be
|
297 |
} |
1da177e4c
|
298 |
set_bit(ATM_VF_WAITING, &vcc->flags); |
aa3951451
|
299 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE); |
b7d9371be
|
300 |
sigd_enq(vcc, as_listen, NULL, NULL, &vcc->local); |
1da177e4c
|
301 302 |
while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) { schedule(); |
aa3951451
|
303 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE); |
1da177e4c
|
304 |
} |
aa3951451
|
305 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c
|
306 307 308 309 |
if (!sigd) { error = -EUNATCH; goto out; } |
b7d9371be
|
310 |
set_bit(ATM_VF_LISTEN, &vcc->flags); |
17b24b3c9
|
311 |
vcc_insert_socket(sk); |
1da177e4c
|
312 313 314 315 316 317 |
sk->sk_max_ack_backlog = backlog > 0 ? backlog : ATM_BACKLOG_DEFAULT; error = -sk->sk_err; out: release_sock(sk); return error; } |
b7d9371be
|
318 |
static int svc_accept(struct socket *sock, struct socket *newsock, int flags) |
1da177e4c
|
319 320 321 322 323 324 325 326 327 |
{ struct sock *sk = sock->sk; struct sk_buff *skb; struct atmsvc_msg *msg; struct atm_vcc *old_vcc = ATM_SD(sock); struct atm_vcc *new_vcc; int error; lock_sock(sk); |
3f378b684
|
328 |
error = svc_create(sock_net(sk), newsock, 0, 0); |
1da177e4c
|
329 330 331 332 |
if (error) goto out; new_vcc = ATM_SD(newsock); |
99824461e
|
333 334 |
pr_debug("%p -> %p ", old_vcc, new_vcc); |
1da177e4c
|
335 336 |
while (1) { DEFINE_WAIT(wait); |
aa3951451
|
337 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c
|
338 339 |
while (!(skb = skb_dequeue(&sk->sk_receive_queue)) && sigd) { |
b7d9371be
|
340 341 342 |
if (test_bit(ATM_VF_RELEASED, &old_vcc->flags)) break; if (test_bit(ATM_VF_CLOSE, &old_vcc->flags)) { |
1da177e4c
|
343 344 345 346 347 348 349 350 351 352 353 354 355 356 |
error = -sk->sk_err; break; } if (flags & O_NONBLOCK) { error = -EAGAIN; break; } release_sock(sk); schedule(); lock_sock(sk); if (signal_pending(current)) { error = -ERESTARTSYS; break; } |
aa3951451
|
357 |
prepare_to_wait(sk_sleep(sk), &wait, |
b7d9371be
|
358 |
TASK_INTERRUPTIBLE); |
1da177e4c
|
359 |
} |
aa3951451
|
360 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c
|
361 362 363 364 365 366 |
if (error) goto out; if (!skb) { error = -EUNATCH; goto out; } |
b7d9371be
|
367 |
msg = (struct atmsvc_msg *)skb->data; |
1da177e4c
|
368 |
new_vcc->qos = msg->qos; |
b7d9371be
|
369 |
set_bit(ATM_VF_HASQOS, &new_vcc->flags); |
1da177e4c
|
370 371 372 373 |
new_vcc->remote = msg->svc; new_vcc->local = msg->local; new_vcc->sap = msg->sap; error = vcc_connect(newsock, msg->pvc.sap_addr.itf, |
b7d9371be
|
374 375 |
msg->pvc.sap_addr.vpi, msg->pvc.sap_addr.vci); |
1da177e4c
|
376 377 378 |
dev_kfree_skb(skb); sk->sk_ack_backlog--; if (error) { |
b7d9371be
|
379 380 |
sigd_enq2(NULL, as_reject, old_vcc, NULL, NULL, &old_vcc->qos, error); |
1da177e4c
|
381 382 383 384 385 |
error = error == -EAGAIN ? -EBUSY : error; goto out; } /* wait should be short, so we ignore the non-blocking flag */ set_bit(ATM_VF_WAITING, &new_vcc->flags); |
aa3951451
|
386 |
prepare_to_wait(sk_sleep(sk_atm(new_vcc)), &wait, |
b7d9371be
|
387 388 |
TASK_UNINTERRUPTIBLE); sigd_enq(new_vcc, as_accept, old_vcc, NULL, NULL); |
1da177e4c
|
389 390 391 392 |
while (test_bit(ATM_VF_WAITING, &new_vcc->flags) && sigd) { release_sock(sk); schedule(); lock_sock(sk); |
aa3951451
|
393 |
prepare_to_wait(sk_sleep(sk_atm(new_vcc)), &wait, |
b7d9371be
|
394 |
TASK_UNINTERRUPTIBLE); |
1da177e4c
|
395 |
} |
aa3951451
|
396 |
finish_wait(sk_sleep(sk_atm(new_vcc)), &wait); |
1da177e4c
|
397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 |
if (!sigd) { error = -EUNATCH; goto out; } if (!sk_atm(new_vcc)->sk_err) break; if (sk_atm(new_vcc)->sk_err != ERESTARTSYS) { error = -sk_atm(new_vcc)->sk_err; goto out; } } newsock->state = SS_CONNECTED; out: release_sock(sk); return error; } |
b7d9371be
|
413 414 |
static int svc_getname(struct socket *sock, struct sockaddr *sockaddr, int *sockaddr_len, int peer) |
1da177e4c
|
415 416 417 418 419 |
{ struct sockaddr_atmsvc *addr; *sockaddr_len = sizeof(struct sockaddr_atmsvc); addr = (struct sockaddr_atmsvc *) sockaddr; |
b7d9371be
|
420 421 |
memcpy(addr, peer ? &ATM_SD(sock)->remote : &ATM_SD(sock)->local, sizeof(struct sockaddr_atmsvc)); |
1da177e4c
|
422 423 |
return 0; } |
b7d9371be
|
424 |
int svc_change_qos(struct atm_vcc *vcc, struct atm_qos *qos) |
1da177e4c
|
425 426 427 428 429 |
{ struct sock *sk = sk_atm(vcc); DEFINE_WAIT(wait); set_bit(ATM_VF_WAITING, &vcc->flags); |
aa3951451
|
430 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE); |
b7d9371be
|
431 |
sigd_enq2(vcc, as_modify, NULL, NULL, &vcc->local, qos, 0); |
1da177e4c
|
432 433 434 |
while (test_bit(ATM_VF_WAITING, &vcc->flags) && !test_bit(ATM_VF_RELEASED, &vcc->flags) && sigd) { schedule(); |
aa3951451
|
435 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE); |
1da177e4c
|
436 |
} |
aa3951451
|
437 |
finish_wait(sk_sleep(sk), &wait); |
b7d9371be
|
438 439 |
if (!sigd) return -EUNATCH; |
1da177e4c
|
440 441 |
return -sk->sk_err; } |
1da177e4c
|
442 |
static int svc_setsockopt(struct socket *sock, int level, int optname, |
b7058842c
|
443 |
char __user *optval, unsigned int optlen) |
1da177e4c
|
444 445 446 447 448 449 450 |
{ struct sock *sk = sock->sk; struct atm_vcc *vcc = ATM_SD(sock); int value, error = 0; lock_sock(sk); switch (optname) { |
b7d9371be
|
451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 |
case SO_ATMSAP: if (level != SOL_ATM || optlen != sizeof(struct atm_sap)) { error = -EINVAL; goto out; } if (copy_from_user(&vcc->sap, optval, optlen)) { error = -EFAULT; goto out; } set_bit(ATM_VF_HASSAP, &vcc->flags); break; case SO_MULTIPOINT: if (level != SOL_ATM || optlen != sizeof(int)) { error = -EINVAL; goto out; } if (get_user(value, (int __user *)optval)) { error = -EFAULT; goto out; } if (value == 1) set_bit(ATM_VF_SESSION, &vcc->flags); else if (value == 0) clear_bit(ATM_VF_SESSION, &vcc->flags); else error = -EINVAL; break; default: error = vcc_setsockopt(sock, level, optname, optval, optlen); |
1da177e4c
|
480 481 482 483 484 485 |
} out: release_sock(sk); return error; } |
b7d9371be
|
486 487 |
static int svc_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) |
1da177e4c
|
488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 |
{ struct sock *sk = sock->sk; int error = 0, len; lock_sock(sk); if (!__SO_LEVEL_MATCH(optname, level) || optname != SO_ATMSAP) { error = vcc_getsockopt(sock, level, optname, optval, optlen); goto out; } if (get_user(len, optlen)) { error = -EFAULT; goto out; } if (len != sizeof(struct atm_sap)) { error = -EINVAL; goto out; } if (copy_to_user(optval, &ATM_SD(sock)->sap, sizeof(struct atm_sap))) { error = -EFAULT; goto out; } out: release_sock(sk); return error; } |
1da177e4c
|
513 514 515 516 517 518 519 520 521 522 |
static int svc_addparty(struct socket *sock, struct sockaddr *sockaddr, int sockaddr_len, int flags) { DEFINE_WAIT(wait); struct sock *sk = sock->sk; struct atm_vcc *vcc = ATM_SD(sock); int error; lock_sock(sk); set_bit(ATM_VF_WAITING, &vcc->flags); |
aa3951451
|
523 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c
|
524 |
sigd_enq(vcc, as_addparty, NULL, NULL, |
f7d57453d
|
525 |
(struct sockaddr_atmsvc *) sockaddr); |
1da177e4c
|
526 |
if (flags & O_NONBLOCK) { |
aa3951451
|
527 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c
|
528 529 530 |
error = -EINPROGRESS; goto out; } |
99824461e
|
531 532 |
pr_debug("added wait queue "); |
1da177e4c
|
533 534 |
while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) { schedule(); |
aa3951451
|
535 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c
|
536 |
} |
aa3951451
|
537 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c
|
538 539 540 541 542 |
error = xchg(&sk->sk_err_soft, 0); out: release_sock(sk); return error; } |
1da177e4c
|
543 544 545 546 547 548 549 550 551 |
static int svc_dropparty(struct socket *sock, int ep_ref) { DEFINE_WAIT(wait); struct sock *sk = sock->sk; struct atm_vcc *vcc = ATM_SD(sock); int error; lock_sock(sk); set_bit(ATM_VF_WAITING, &vcc->flags); |
aa3951451
|
552 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c
|
553 554 555 |
sigd_enq2(vcc, as_dropparty, NULL, NULL, NULL, NULL, ep_ref); while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) { schedule(); |
aa3951451
|
556 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c
|
557 |
} |
aa3951451
|
558 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c
|
559 560 561 562 563 564 565 566 567 |
if (!sigd) { error = -EUNATCH; goto out; } error = xchg(&sk->sk_err_soft, 0); out: release_sock(sk); return error; } |
1da177e4c
|
568 569 |
static int svc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { |
f7d57453d
|
570 571 |
int error, ep_ref; struct sockaddr_atmsvc sa; |
1da177e4c
|
572 |
struct atm_vcc *vcc = ATM_SD(sock); |
f7d57453d
|
573 |
|
1da177e4c
|
574 |
switch (cmd) { |
b7d9371be
|
575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 |
case ATM_ADDPARTY: if (!test_bit(ATM_VF_SESSION, &vcc->flags)) return -EINVAL; if (copy_from_user(&sa, (void __user *) arg, sizeof(sa))) return -EFAULT; error = svc_addparty(sock, (struct sockaddr *)&sa, sizeof(sa), 0); break; case ATM_DROPPARTY: if (!test_bit(ATM_VF_SESSION, &vcc->flags)) return -EINVAL; if (copy_from_user(&ep_ref, (void __user *) arg, sizeof(int))) return -EFAULT; error = svc_dropparty(sock, ep_ref); break; default: error = vcc_ioctl(sock, cmd, arg); |
1da177e4c
|
592 593 594 595 |
} return error; } |
8865c418c
|
596 |
#ifdef CONFIG_COMPAT |
b7d9371be
|
597 598 |
static int svc_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
8865c418c
|
599 600 601 602 603 604 605 606 607 608 609 610 611 |
{ /* The definition of ATM_ADDPARTY uses the size of struct atm_iobuf. But actually it takes a struct sockaddr_atmsvc, which doesn't need compat handling. So all we have to do is fix up cmd... */ if (cmd == COMPAT_ATM_ADDPARTY) cmd = ATM_ADDPARTY; if (cmd == ATM_ADDPARTY || cmd == ATM_DROPPARTY) return svc_ioctl(sock, cmd, arg); else return vcc_compat_ioctl(sock, cmd, arg); } #endif /* CONFIG_COMPAT */ |
90ddc4f04
|
612 |
static const struct proto_ops svc_proto_ops = { |
1da177e4c
|
613 614 615 616 617 618 619 620 621 622 623 |
.family = PF_ATMSVC, .owner = THIS_MODULE, .release = svc_release, .bind = svc_bind, .connect = svc_connect, .socketpair = sock_no_socketpair, .accept = svc_accept, .getname = svc_getname, .poll = vcc_poll, .ioctl = svc_ioctl, |
8865c418c
|
624 625 626 |
#ifdef CONFIG_COMPAT .compat_ioctl = svc_compat_ioctl, #endif |
1da177e4c
|
627 628 629 630 631 632 633 634 635 |
.listen = svc_listen, .shutdown = svc_shutdown, .setsockopt = svc_setsockopt, .getsockopt = svc_getsockopt, .sendmsg = vcc_sendmsg, .recvmsg = vcc_recvmsg, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, }; |
3f378b684
|
636 637 |
static int svc_create(struct net *net, struct socket *sock, int protocol, int kern) |
1da177e4c
|
638 639 |
{ int error; |
09ad9bc75
|
640 |
if (!net_eq(net, &init_net)) |
1b8d7ae42
|
641 |
return -EAFNOSUPPORT; |
1da177e4c
|
642 |
sock->ops = &svc_proto_ops; |
1b8d7ae42
|
643 |
error = vcc_create(net, sock, protocol, AF_ATMSVC); |
b7d9371be
|
644 645 |
if (error) return error; |
1da177e4c
|
646 647 648 649 |
ATM_SD(sock)->local.sas_family = AF_ATMSVC; ATM_SD(sock)->remote.sas_family = AF_ATMSVC; return 0; } |
ec1b4cf74
|
650 |
static const struct net_proto_family svc_family_ops = { |
1da177e4c
|
651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 |
.family = PF_ATMSVC, .create = svc_create, .owner = THIS_MODULE, }; /* * Initialize the ATM SVC protocol family */ int __init atmsvc_init(void) { return sock_register(&svc_family_ops); } void atmsvc_exit(void) { sock_unregister(PF_ATMSVC); } |