Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Author Karsten Keil <kkeil@novell.com> |
| 4 | * |
| 5 | * Copyright 2008 by Karsten Keil <kkeil@novell.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | */ |
| 17 | |
| 18 | #include <linux/mISDNif.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 19 | #include <linux/slab.h> |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 20 | #include "core.h" |
| 21 | |
Hannes Eder | dfa96ec | 2008-12-12 21:13:45 -0800 | [diff] [blame] | 22 | static u_int *debug; |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 23 | |
| 24 | static struct proto mISDN_proto = { |
| 25 | .name = "misdn", |
| 26 | .owner = THIS_MODULE, |
| 27 | .obj_size = sizeof(struct mISDN_sock) |
| 28 | }; |
| 29 | |
| 30 | #define _pms(sk) ((struct mISDN_sock *)sk) |
| 31 | |
| 32 | static struct mISDN_sock_list data_sockets = { |
| 33 | .lock = __RW_LOCK_UNLOCKED(data_sockets.lock) |
| 34 | }; |
| 35 | |
| 36 | static struct mISDN_sock_list base_sockets = { |
| 37 | .lock = __RW_LOCK_UNLOCKED(base_sockets.lock) |
| 38 | }; |
| 39 | |
| 40 | #define L2_HEADER_LEN 4 |
| 41 | |
| 42 | static inline struct sk_buff * |
| 43 | _l2_alloc_skb(unsigned int len, gfp_t gfp_mask) |
| 44 | { |
| 45 | struct sk_buff *skb; |
| 46 | |
| 47 | skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask); |
| 48 | if (likely(skb)) |
| 49 | skb_reserve(skb, L2_HEADER_LEN); |
| 50 | return skb; |
| 51 | } |
| 52 | |
| 53 | static void |
| 54 | mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk) |
| 55 | { |
| 56 | write_lock_bh(&l->lock); |
| 57 | sk_add_node(sk, &l->head); |
| 58 | write_unlock_bh(&l->lock); |
| 59 | } |
| 60 | |
| 61 | static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk) |
| 62 | { |
| 63 | write_lock_bh(&l->lock); |
| 64 | sk_del_node_init(sk); |
| 65 | write_unlock_bh(&l->lock); |
| 66 | } |
| 67 | |
| 68 | static int |
| 69 | mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb) |
| 70 | { |
| 71 | struct mISDN_sock *msk; |
| 72 | int err; |
| 73 | |
| 74 | msk = container_of(ch, struct mISDN_sock, ch); |
| 75 | if (*debug & DEBUG_SOCKET) |
| 76 | printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb); |
| 77 | if (msk->sk.sk_state == MISDN_CLOSED) |
| 78 | return -EUNATCH; |
| 79 | __net_timestamp(skb); |
| 80 | err = sock_queue_rcv_skb(&msk->sk, skb); |
| 81 | if (err) |
| 82 | printk(KERN_WARNING "%s: error %d\n", __func__, err); |
| 83 | return err; |
| 84 | } |
| 85 | |
| 86 | static int |
| 87 | mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg) |
| 88 | { |
| 89 | struct mISDN_sock *msk; |
| 90 | |
| 91 | msk = container_of(ch, struct mISDN_sock, ch); |
| 92 | if (*debug & DEBUG_SOCKET) |
| 93 | printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg); |
| 94 | switch (cmd) { |
| 95 | case CLOSE_CHANNEL: |
| 96 | msk->sk.sk_state = MISDN_CLOSED; |
| 97 | break; |
| 98 | } |
| 99 | return 0; |
| 100 | } |
| 101 | |
| 102 | static inline void |
| 103 | mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) |
| 104 | { |
| 105 | struct timeval tv; |
| 106 | |
| 107 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) { |
| 108 | skb_get_timestamp(skb, &tv); |
| 109 | put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | static int |
| 114 | mISDN_sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
| 115 | struct msghdr *msg, size_t len, int flags) |
| 116 | { |
| 117 | struct sk_buff *skb; |
| 118 | struct sock *sk = sock->sk; |
| 119 | struct sockaddr_mISDN *maddr; |
| 120 | |
| 121 | int copied, err; |
| 122 | |
| 123 | if (*debug & DEBUG_SOCKET) |
| 124 | printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n", |
| 125 | __func__, (int)len, flags, _pms(sk)->ch.nr, |
| 126 | sk->sk_protocol); |
| 127 | if (flags & (MSG_OOB)) |
| 128 | return -EOPNOTSUPP; |
| 129 | |
| 130 | if (sk->sk_state == MISDN_CLOSED) |
| 131 | return 0; |
| 132 | |
| 133 | skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err); |
| 134 | if (!skb) |
| 135 | return err; |
| 136 | |
| 137 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { |
| 138 | msg->msg_namelen = sizeof(struct sockaddr_mISDN); |
| 139 | maddr = (struct sockaddr_mISDN *)msg->msg_name; |
| 140 | maddr->family = AF_ISDN; |
| 141 | maddr->dev = _pms(sk)->dev->id; |
| 142 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || |
| 143 | (sk->sk_protocol == ISDN_P_LAPD_NT)) { |
| 144 | maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff; |
| 145 | maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff; |
| 146 | maddr->sapi = mISDN_HEAD_ID(skb) & 0xff; |
| 147 | } else { |
| 148 | maddr->channel = _pms(sk)->ch.nr; |
| 149 | maddr->sapi = _pms(sk)->ch.addr & 0xFF; |
| 150 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF; |
| 151 | } |
| 152 | } else { |
| 153 | if (msg->msg_namelen) |
| 154 | printk(KERN_WARNING "%s: too small namelen %d\n", |
| 155 | __func__, msg->msg_namelen); |
| 156 | msg->msg_namelen = 0; |
| 157 | } |
| 158 | |
| 159 | copied = skb->len + MISDN_HEADER_LEN; |
| 160 | if (len < copied) { |
| 161 | if (flags & MSG_PEEK) |
| 162 | atomic_dec(&skb->users); |
| 163 | else |
| 164 | skb_queue_head(&sk->sk_receive_queue, skb); |
| 165 | return -ENOSPC; |
| 166 | } |
| 167 | memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb), |
| 168 | MISDN_HEADER_LEN); |
| 169 | |
| 170 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
| 171 | |
| 172 | mISDN_sock_cmsg(sk, msg, skb); |
| 173 | |
| 174 | skb_free_datagram(sk, skb); |
| 175 | |
| 176 | return err ? : copied; |
| 177 | } |
| 178 | |
| 179 | static int |
| 180 | mISDN_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
| 181 | struct msghdr *msg, size_t len) |
| 182 | { |
| 183 | struct sock *sk = sock->sk; |
| 184 | struct sk_buff *skb; |
| 185 | int err = -ENOMEM; |
| 186 | struct sockaddr_mISDN *maddr; |
| 187 | |
| 188 | if (*debug & DEBUG_SOCKET) |
| 189 | printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n", |
| 190 | __func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr, |
| 191 | sk->sk_protocol); |
| 192 | |
| 193 | if (msg->msg_flags & MSG_OOB) |
| 194 | return -EOPNOTSUPP; |
| 195 | |
| 196 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) |
| 197 | return -EINVAL; |
| 198 | |
| 199 | if (len < MISDN_HEADER_LEN) |
| 200 | return -EINVAL; |
| 201 | |
| 202 | if (sk->sk_state != MISDN_BOUND) |
| 203 | return -EBADFD; |
| 204 | |
| 205 | lock_sock(sk); |
| 206 | |
| 207 | skb = _l2_alloc_skb(len, GFP_KERNEL); |
| 208 | if (!skb) |
| 209 | goto done; |
| 210 | |
| 211 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { |
| 212 | err = -EFAULT; |
Karsten Keil | 5df3b8b | 2009-05-22 11:04:52 +0000 | [diff] [blame] | 213 | goto done; |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN); |
| 217 | skb_pull(skb, MISDN_HEADER_LEN); |
| 218 | |
| 219 | if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) { |
| 220 | /* if we have a address, we use it */ |
| 221 | maddr = (struct sockaddr_mISDN *)msg->msg_name; |
| 222 | mISDN_HEAD_ID(skb) = maddr->channel; |
| 223 | } else { /* use default for L2 messages */ |
| 224 | if ((sk->sk_protocol == ISDN_P_LAPD_TE) || |
| 225 | (sk->sk_protocol == ISDN_P_LAPD_NT)) |
Karsten Keil | eac74af | 2009-05-22 11:04:56 +0000 | [diff] [blame] | 226 | mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr; |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | if (*debug & DEBUG_SOCKET) |
| 230 | printk(KERN_DEBUG "%s: ID:%x\n", |
| 231 | __func__, mISDN_HEAD_ID(skb)); |
| 232 | |
| 233 | err = -ENODEV; |
Karsten Keil | 5df3b8b | 2009-05-22 11:04:52 +0000 | [diff] [blame] | 234 | if (!_pms(sk)->ch.peer) |
| 235 | goto done; |
| 236 | err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb); |
| 237 | if (err) |
| 238 | goto done; |
| 239 | else { |
| 240 | skb = NULL; |
| 241 | err = len; |
| 242 | } |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 243 | |
| 244 | done: |
Karsten Keil | 5df3b8b | 2009-05-22 11:04:52 +0000 | [diff] [blame] | 245 | if (skb) |
| 246 | kfree_skb(skb); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 247 | release_sock(sk); |
| 248 | return err; |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | static int |
| 252 | data_sock_release(struct socket *sock) |
| 253 | { |
| 254 | struct sock *sk = sock->sk; |
| 255 | |
| 256 | if (*debug & DEBUG_SOCKET) |
| 257 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); |
| 258 | if (!sk) |
| 259 | return 0; |
| 260 | switch (sk->sk_protocol) { |
| 261 | case ISDN_P_TE_S0: |
| 262 | case ISDN_P_NT_S0: |
| 263 | case ISDN_P_TE_E1: |
| 264 | case ISDN_P_NT_E1: |
| 265 | if (sk->sk_state == MISDN_BOUND) |
| 266 | delete_channel(&_pms(sk)->ch); |
| 267 | else |
| 268 | mISDN_sock_unlink(&data_sockets, sk); |
| 269 | break; |
| 270 | case ISDN_P_LAPD_TE: |
| 271 | case ISDN_P_LAPD_NT: |
| 272 | case ISDN_P_B_RAW: |
| 273 | case ISDN_P_B_HDLC: |
| 274 | case ISDN_P_B_X75SLP: |
| 275 | case ISDN_P_B_L2DTMF: |
| 276 | case ISDN_P_B_L2DSP: |
| 277 | case ISDN_P_B_L2DSPHDLC: |
| 278 | delete_channel(&_pms(sk)->ch); |
| 279 | mISDN_sock_unlink(&data_sockets, sk); |
| 280 | break; |
| 281 | } |
| 282 | |
| 283 | lock_sock(sk); |
| 284 | |
| 285 | sock_orphan(sk); |
| 286 | skb_queue_purge(&sk->sk_receive_queue); |
| 287 | |
| 288 | release_sock(sk); |
| 289 | sock_put(sk); |
| 290 | |
| 291 | return 0; |
| 292 | } |
| 293 | |
| 294 | static int |
| 295 | data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p) |
| 296 | { |
| 297 | struct mISDN_ctrl_req cq; |
Andreas Eversberg | e73f6b2 | 2009-05-22 11:04:48 +0000 | [diff] [blame] | 298 | int err = -EINVAL, val[2]; |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 299 | struct mISDNchannel *bchan, *next; |
| 300 | |
| 301 | lock_sock(sk); |
| 302 | if (!_pms(sk)->dev) { |
| 303 | err = -ENODEV; |
| 304 | goto done; |
| 305 | } |
| 306 | switch (cmd) { |
| 307 | case IMCTRLREQ: |
| 308 | if (copy_from_user(&cq, p, sizeof(cq))) { |
| 309 | err = -EFAULT; |
| 310 | break; |
| 311 | } |
| 312 | if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) { |
| 313 | list_for_each_entry_safe(bchan, next, |
| 314 | &_pms(sk)->dev->bchannels, list) { |
| 315 | if (bchan->nr == cq.channel) { |
| 316 | err = bchan->ctrl(bchan, |
| 317 | CONTROL_CHANNEL, &cq); |
| 318 | break; |
| 319 | } |
| 320 | } |
| 321 | } else |
| 322 | err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D, |
| 323 | CONTROL_CHANNEL, &cq); |
| 324 | if (err) |
| 325 | break; |
| 326 | if (copy_to_user(p, &cq, sizeof(cq))) |
| 327 | err = -EFAULT; |
| 328 | break; |
| 329 | case IMCLEAR_L2: |
| 330 | if (sk->sk_protocol != ISDN_P_LAPD_NT) { |
| 331 | err = -EINVAL; |
| 332 | break; |
| 333 | } |
Andreas Eversberg | e73f6b2 | 2009-05-22 11:04:48 +0000 | [diff] [blame] | 334 | val[0] = cmd; |
| 335 | if (get_user(val[1], (int __user *)p)) { |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 336 | err = -EFAULT; |
| 337 | break; |
| 338 | } |
| 339 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, |
Andreas Eversberg | e73f6b2 | 2009-05-22 11:04:48 +0000 | [diff] [blame] | 340 | CONTROL_CHANNEL, val); |
| 341 | break; |
| 342 | case IMHOLD_L1: |
| 343 | if (sk->sk_protocol != ISDN_P_LAPD_NT |
| 344 | && sk->sk_protocol != ISDN_P_LAPD_TE) { |
| 345 | err = -EINVAL; |
| 346 | break; |
| 347 | } |
| 348 | val[0] = cmd; |
| 349 | if (get_user(val[1], (int __user *)p)) { |
| 350 | err = -EFAULT; |
| 351 | break; |
| 352 | } |
| 353 | err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr, |
| 354 | CONTROL_CHANNEL, val); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 355 | break; |
| 356 | default: |
| 357 | err = -EINVAL; |
| 358 | break; |
| 359 | } |
| 360 | done: |
| 361 | release_sock(sk); |
| 362 | return err; |
| 363 | } |
| 364 | |
| 365 | static int |
| 366 | data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
| 367 | { |
| 368 | int err = 0, id; |
| 369 | struct sock *sk = sock->sk; |
| 370 | struct mISDNdevice *dev; |
| 371 | struct mISDNversion ver; |
| 372 | |
| 373 | switch (cmd) { |
| 374 | case IMGETVERSION: |
| 375 | ver.major = MISDN_MAJOR_VERSION; |
| 376 | ver.minor = MISDN_MINOR_VERSION; |
| 377 | ver.release = MISDN_RELEASE; |
| 378 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) |
| 379 | err = -EFAULT; |
| 380 | break; |
| 381 | case IMGETCOUNT: |
| 382 | id = get_mdevice_count(); |
| 383 | if (put_user(id, (int __user *)arg)) |
| 384 | err = -EFAULT; |
| 385 | break; |
| 386 | case IMGETDEVINFO: |
| 387 | if (get_user(id, (int __user *)arg)) { |
| 388 | err = -EFAULT; |
| 389 | break; |
| 390 | } |
| 391 | dev = get_mdevice(id); |
| 392 | if (dev) { |
| 393 | struct mISDN_devinfo di; |
| 394 | |
Kulikov Vasiliy | ce384d9 | 2010-10-29 23:04:33 +0000 | [diff] [blame] | 395 | memset(&di, 0, sizeof(di)); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 396 | di.id = dev->id; |
| 397 | di.Dprotocols = dev->Dprotocols; |
| 398 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); |
| 399 | di.protocol = dev->D.protocol; |
| 400 | memcpy(di.channelmap, dev->channelmap, |
Karsten Keil | ff4cc1d | 2008-07-30 18:26:58 +0200 | [diff] [blame] | 401 | sizeof(di.channelmap)); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 402 | di.nrbchan = dev->nrbchan; |
Matthias Urlichs | 837468d | 2008-08-16 00:04:33 +0200 | [diff] [blame] | 403 | strcpy(di.name, dev_name(&dev->dev)); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 404 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
| 405 | err = -EFAULT; |
| 406 | } else |
| 407 | err = -ENODEV; |
| 408 | break; |
| 409 | default: |
| 410 | if (sk->sk_state == MISDN_BOUND) |
| 411 | err = data_sock_ioctl_bound(sk, cmd, |
| 412 | (void __user *)arg); |
| 413 | else |
| 414 | err = -ENOTCONN; |
| 415 | } |
| 416 | return err; |
| 417 | } |
| 418 | |
| 419 | static int data_sock_setsockopt(struct socket *sock, int level, int optname, |
David S. Miller | b705884 | 2009-09-30 16:12:20 -0700 | [diff] [blame] | 420 | char __user *optval, unsigned int len) |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 421 | { |
| 422 | struct sock *sk = sock->sk; |
| 423 | int err = 0, opt = 0; |
| 424 | |
| 425 | if (*debug & DEBUG_SOCKET) |
| 426 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, |
| 427 | level, optname, optval, len); |
| 428 | |
| 429 | lock_sock(sk); |
| 430 | |
| 431 | switch (optname) { |
| 432 | case MISDN_TIME_STAMP: |
| 433 | if (get_user(opt, (int __user *)optval)) { |
| 434 | err = -EFAULT; |
| 435 | break; |
| 436 | } |
| 437 | |
| 438 | if (opt) |
| 439 | _pms(sk)->cmask |= MISDN_TIME_STAMP; |
| 440 | else |
| 441 | _pms(sk)->cmask &= ~MISDN_TIME_STAMP; |
| 442 | break; |
| 443 | default: |
| 444 | err = -ENOPROTOOPT; |
| 445 | break; |
| 446 | } |
| 447 | release_sock(sk); |
| 448 | return err; |
| 449 | } |
| 450 | |
| 451 | static int data_sock_getsockopt(struct socket *sock, int level, int optname, |
| 452 | char __user *optval, int __user *optlen) |
| 453 | { |
| 454 | struct sock *sk = sock->sk; |
| 455 | int len, opt; |
| 456 | |
| 457 | if (get_user(len, optlen)) |
| 458 | return -EFAULT; |
| 459 | |
| 460 | switch (optname) { |
| 461 | case MISDN_TIME_STAMP: |
| 462 | if (_pms(sk)->cmask & MISDN_TIME_STAMP) |
| 463 | opt = 1; |
| 464 | else |
| 465 | opt = 0; |
| 466 | |
| 467 | if (put_user(opt, optval)) |
| 468 | return -EFAULT; |
| 469 | break; |
| 470 | default: |
| 471 | return -ENOPROTOOPT; |
| 472 | } |
| 473 | |
| 474 | return 0; |
| 475 | } |
| 476 | |
| 477 | static int |
| 478 | data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) |
| 479 | { |
| 480 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; |
| 481 | struct sock *sk = sock->sk; |
Andreas Eversberg | 1b4d331 | 2008-09-14 12:30:18 +0200 | [diff] [blame] | 482 | struct hlist_node *node; |
| 483 | struct sock *csk; |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 484 | int err = 0; |
| 485 | |
| 486 | if (*debug & DEBUG_SOCKET) |
| 487 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); |
| 488 | if (addr_len != sizeof(struct sockaddr_mISDN)) |
| 489 | return -EINVAL; |
| 490 | if (!maddr || maddr->family != AF_ISDN) |
| 491 | return -EINVAL; |
| 492 | |
| 493 | lock_sock(sk); |
| 494 | |
| 495 | if (_pms(sk)->dev) { |
| 496 | err = -EALREADY; |
| 497 | goto done; |
| 498 | } |
| 499 | _pms(sk)->dev = get_mdevice(maddr->dev); |
| 500 | if (!_pms(sk)->dev) { |
| 501 | err = -ENODEV; |
| 502 | goto done; |
| 503 | } |
Andreas Eversberg | 1b4d331 | 2008-09-14 12:30:18 +0200 | [diff] [blame] | 504 | |
Andreas Eversberg | 9a81255 | 2008-09-14 14:42:18 +0200 | [diff] [blame] | 505 | if (sk->sk_protocol < ISDN_P_B_START) { |
| 506 | read_lock_bh(&data_sockets.lock); |
| 507 | sk_for_each(csk, node, &data_sockets.head) { |
| 508 | if (sk == csk) |
| 509 | continue; |
| 510 | if (_pms(csk)->dev != _pms(sk)->dev) |
| 511 | continue; |
| 512 | if (csk->sk_protocol >= ISDN_P_B_START) |
| 513 | continue; |
| 514 | if (IS_ISDN_P_TE(csk->sk_protocol) |
| 515 | == IS_ISDN_P_TE(sk->sk_protocol)) |
| 516 | continue; |
| 517 | read_unlock_bh(&data_sockets.lock); |
| 518 | err = -EBUSY; |
| 519 | goto done; |
| 520 | } |
Andreas Eversberg | 1b4d331 | 2008-09-14 12:30:18 +0200 | [diff] [blame] | 521 | read_unlock_bh(&data_sockets.lock); |
Andreas Eversberg | 1b4d331 | 2008-09-14 12:30:18 +0200 | [diff] [blame] | 522 | } |
Andreas Eversberg | 1b4d331 | 2008-09-14 12:30:18 +0200 | [diff] [blame] | 523 | |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 524 | _pms(sk)->ch.send = mISDN_send; |
| 525 | _pms(sk)->ch.ctrl = mISDN_ctrl; |
| 526 | |
| 527 | switch (sk->sk_protocol) { |
| 528 | case ISDN_P_TE_S0: |
| 529 | case ISDN_P_NT_S0: |
| 530 | case ISDN_P_TE_E1: |
| 531 | case ISDN_P_NT_E1: |
| 532 | mISDN_sock_unlink(&data_sockets, sk); |
| 533 | err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch, |
| 534 | sk->sk_protocol, maddr); |
| 535 | if (err) |
| 536 | mISDN_sock_link(&data_sockets, sk); |
| 537 | break; |
| 538 | case ISDN_P_LAPD_TE: |
| 539 | case ISDN_P_LAPD_NT: |
| 540 | err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch, |
| 541 | sk->sk_protocol, maddr); |
| 542 | break; |
| 543 | case ISDN_P_B_RAW: |
| 544 | case ISDN_P_B_HDLC: |
| 545 | case ISDN_P_B_X75SLP: |
| 546 | case ISDN_P_B_L2DTMF: |
| 547 | case ISDN_P_B_L2DSP: |
| 548 | case ISDN_P_B_L2DSPHDLC: |
| 549 | err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch, |
| 550 | sk->sk_protocol, maddr); |
| 551 | break; |
| 552 | default: |
| 553 | err = -EPROTONOSUPPORT; |
| 554 | } |
| 555 | if (err) |
| 556 | goto done; |
| 557 | sk->sk_state = MISDN_BOUND; |
| 558 | _pms(sk)->ch.protocol = sk->sk_protocol; |
| 559 | |
| 560 | done: |
| 561 | release_sock(sk); |
| 562 | return err; |
| 563 | } |
| 564 | |
| 565 | static int |
| 566 | data_sock_getname(struct socket *sock, struct sockaddr *addr, |
| 567 | int *addr_len, int peer) |
| 568 | { |
| 569 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; |
| 570 | struct sock *sk = sock->sk; |
| 571 | |
| 572 | if (!_pms(sk)->dev) |
| 573 | return -EBADFD; |
| 574 | |
| 575 | lock_sock(sk); |
| 576 | |
| 577 | *addr_len = sizeof(*maddr); |
| 578 | maddr->dev = _pms(sk)->dev->id; |
| 579 | maddr->channel = _pms(sk)->ch.nr; |
| 580 | maddr->sapi = _pms(sk)->ch.addr & 0xff; |
| 581 | maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff; |
| 582 | release_sock(sk); |
| 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | static const struct proto_ops data_sock_ops = { |
| 587 | .family = PF_ISDN, |
| 588 | .owner = THIS_MODULE, |
| 589 | .release = data_sock_release, |
| 590 | .ioctl = data_sock_ioctl, |
| 591 | .bind = data_sock_bind, |
| 592 | .getname = data_sock_getname, |
| 593 | .sendmsg = mISDN_sock_sendmsg, |
| 594 | .recvmsg = mISDN_sock_recvmsg, |
| 595 | .poll = datagram_poll, |
| 596 | .listen = sock_no_listen, |
| 597 | .shutdown = sock_no_shutdown, |
| 598 | .setsockopt = data_sock_setsockopt, |
| 599 | .getsockopt = data_sock_getsockopt, |
| 600 | .connect = sock_no_connect, |
| 601 | .socketpair = sock_no_socketpair, |
| 602 | .accept = sock_no_accept, |
| 603 | .mmap = sock_no_mmap |
| 604 | }; |
| 605 | |
| 606 | static int |
| 607 | data_sock_create(struct net *net, struct socket *sock, int protocol) |
| 608 | { |
| 609 | struct sock *sk; |
| 610 | |
| 611 | if (sock->type != SOCK_DGRAM) |
| 612 | return -ESOCKTNOSUPPORT; |
| 613 | |
| 614 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); |
| 615 | if (!sk) |
| 616 | return -ENOMEM; |
| 617 | |
| 618 | sock_init_data(sock, sk); |
| 619 | |
| 620 | sock->ops = &data_sock_ops; |
| 621 | sock->state = SS_UNCONNECTED; |
| 622 | sock_reset_flag(sk, SOCK_ZAPPED); |
| 623 | |
| 624 | sk->sk_protocol = protocol; |
| 625 | sk->sk_state = MISDN_OPEN; |
| 626 | mISDN_sock_link(&data_sockets, sk); |
| 627 | |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | static int |
| 632 | base_sock_release(struct socket *sock) |
| 633 | { |
| 634 | struct sock *sk = sock->sk; |
| 635 | |
| 636 | printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk); |
| 637 | if (!sk) |
| 638 | return 0; |
| 639 | |
| 640 | mISDN_sock_unlink(&base_sockets, sk); |
| 641 | sock_orphan(sk); |
| 642 | sock_put(sk); |
| 643 | |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | static int |
| 648 | base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
| 649 | { |
| 650 | int err = 0, id; |
| 651 | struct mISDNdevice *dev; |
| 652 | struct mISDNversion ver; |
| 653 | |
| 654 | switch (cmd) { |
| 655 | case IMGETVERSION: |
| 656 | ver.major = MISDN_MAJOR_VERSION; |
| 657 | ver.minor = MISDN_MINOR_VERSION; |
| 658 | ver.release = MISDN_RELEASE; |
| 659 | if (copy_to_user((void __user *)arg, &ver, sizeof(ver))) |
| 660 | err = -EFAULT; |
| 661 | break; |
| 662 | case IMGETCOUNT: |
| 663 | id = get_mdevice_count(); |
| 664 | if (put_user(id, (int __user *)arg)) |
| 665 | err = -EFAULT; |
| 666 | break; |
| 667 | case IMGETDEVINFO: |
| 668 | if (get_user(id, (int __user *)arg)) { |
| 669 | err = -EFAULT; |
| 670 | break; |
| 671 | } |
| 672 | dev = get_mdevice(id); |
| 673 | if (dev) { |
| 674 | struct mISDN_devinfo di; |
| 675 | |
Kulikov Vasiliy | ce384d9 | 2010-10-29 23:04:33 +0000 | [diff] [blame] | 676 | memset(&di, 0, sizeof(di)); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 677 | di.id = dev->id; |
| 678 | di.Dprotocols = dev->Dprotocols; |
| 679 | di.Bprotocols = dev->Bprotocols | get_all_Bprotocols(); |
| 680 | di.protocol = dev->D.protocol; |
| 681 | memcpy(di.channelmap, dev->channelmap, |
Karsten Keil | ff4cc1d | 2008-07-30 18:26:58 +0200 | [diff] [blame] | 682 | sizeof(di.channelmap)); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 683 | di.nrbchan = dev->nrbchan; |
Matthias Urlichs | 837468d | 2008-08-16 00:04:33 +0200 | [diff] [blame] | 684 | strcpy(di.name, dev_name(&dev->dev)); |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 685 | if (copy_to_user((void __user *)arg, &di, sizeof(di))) |
| 686 | err = -EFAULT; |
| 687 | } else |
| 688 | err = -ENODEV; |
| 689 | break; |
Matthias Urlichs | 8b6015f | 2008-08-12 10:12:09 +0200 | [diff] [blame] | 690 | case IMSETDEVNAME: |
| 691 | { |
| 692 | struct mISDN_devrename dn; |
| 693 | if (copy_from_user(&dn, (void __user *)arg, |
| 694 | sizeof(dn))) { |
| 695 | err = -EFAULT; |
| 696 | break; |
| 697 | } |
| 698 | dev = get_mdevice(dn.id); |
| 699 | if (dev) |
Matthias Urlichs | 837468d | 2008-08-16 00:04:33 +0200 | [diff] [blame] | 700 | err = device_rename(&dev->dev, dn.name); |
Matthias Urlichs | 8b6015f | 2008-08-12 10:12:09 +0200 | [diff] [blame] | 701 | else |
| 702 | err = -ENODEV; |
| 703 | } |
| 704 | break; |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 705 | default: |
| 706 | err = -EINVAL; |
| 707 | } |
| 708 | return err; |
| 709 | } |
| 710 | |
| 711 | static int |
| 712 | base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) |
| 713 | { |
| 714 | struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr; |
| 715 | struct sock *sk = sock->sk; |
| 716 | int err = 0; |
| 717 | |
| 718 | if (!maddr || maddr->family != AF_ISDN) |
| 719 | return -EINVAL; |
| 720 | |
| 721 | lock_sock(sk); |
| 722 | |
| 723 | if (_pms(sk)->dev) { |
| 724 | err = -EALREADY; |
| 725 | goto done; |
| 726 | } |
| 727 | |
| 728 | _pms(sk)->dev = get_mdevice(maddr->dev); |
| 729 | if (!_pms(sk)->dev) { |
| 730 | err = -ENODEV; |
| 731 | goto done; |
| 732 | } |
| 733 | sk->sk_state = MISDN_BOUND; |
| 734 | |
| 735 | done: |
| 736 | release_sock(sk); |
| 737 | return err; |
| 738 | } |
| 739 | |
| 740 | static const struct proto_ops base_sock_ops = { |
| 741 | .family = PF_ISDN, |
| 742 | .owner = THIS_MODULE, |
| 743 | .release = base_sock_release, |
| 744 | .ioctl = base_sock_ioctl, |
| 745 | .bind = base_sock_bind, |
| 746 | .getname = sock_no_getname, |
| 747 | .sendmsg = sock_no_sendmsg, |
| 748 | .recvmsg = sock_no_recvmsg, |
| 749 | .poll = sock_no_poll, |
| 750 | .listen = sock_no_listen, |
| 751 | .shutdown = sock_no_shutdown, |
| 752 | .setsockopt = sock_no_setsockopt, |
| 753 | .getsockopt = sock_no_getsockopt, |
| 754 | .connect = sock_no_connect, |
| 755 | .socketpair = sock_no_socketpair, |
| 756 | .accept = sock_no_accept, |
| 757 | .mmap = sock_no_mmap |
| 758 | }; |
| 759 | |
| 760 | |
| 761 | static int |
| 762 | base_sock_create(struct net *net, struct socket *sock, int protocol) |
| 763 | { |
| 764 | struct sock *sk; |
| 765 | |
| 766 | if (sock->type != SOCK_RAW) |
| 767 | return -ESOCKTNOSUPPORT; |
| 768 | |
| 769 | sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto); |
| 770 | if (!sk) |
| 771 | return -ENOMEM; |
| 772 | |
| 773 | sock_init_data(sock, sk); |
| 774 | sock->ops = &base_sock_ops; |
| 775 | sock->state = SS_UNCONNECTED; |
| 776 | sock_reset_flag(sk, SOCK_ZAPPED); |
| 777 | sk->sk_protocol = protocol; |
| 778 | sk->sk_state = MISDN_OPEN; |
| 779 | mISDN_sock_link(&base_sockets, sk); |
| 780 | |
| 781 | return 0; |
| 782 | } |
| 783 | |
| 784 | static int |
Eric Paris | 3f378b6 | 2009-11-05 22:18:14 -0800 | [diff] [blame] | 785 | mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern) |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 786 | { |
| 787 | int err = -EPROTONOSUPPORT; |
| 788 | |
| 789 | switch (proto) { |
| 790 | case ISDN_P_BASE: |
| 791 | err = base_sock_create(net, sock, proto); |
| 792 | break; |
| 793 | case ISDN_P_TE_S0: |
| 794 | case ISDN_P_NT_S0: |
| 795 | case ISDN_P_TE_E1: |
| 796 | case ISDN_P_NT_E1: |
| 797 | case ISDN_P_LAPD_TE: |
| 798 | case ISDN_P_LAPD_NT: |
| 799 | case ISDN_P_B_RAW: |
| 800 | case ISDN_P_B_HDLC: |
| 801 | case ISDN_P_B_X75SLP: |
| 802 | case ISDN_P_B_L2DTMF: |
| 803 | case ISDN_P_B_L2DSP: |
| 804 | case ISDN_P_B_L2DSPHDLC: |
| 805 | err = data_sock_create(net, sock, proto); |
| 806 | break; |
| 807 | default: |
| 808 | return err; |
| 809 | } |
| 810 | |
| 811 | return err; |
| 812 | } |
| 813 | |
Stephen Hemminger | ec1b4cf | 2009-10-05 05:58:39 +0000 | [diff] [blame] | 814 | static const struct net_proto_family mISDN_sock_family_ops = { |
Karsten Keil | 1b2b03f | 2008-07-27 01:54:58 +0200 | [diff] [blame] | 815 | .owner = THIS_MODULE, |
| 816 | .family = PF_ISDN, |
| 817 | .create = mISDN_sock_create, |
| 818 | }; |
| 819 | |
| 820 | int |
| 821 | misdn_sock_init(u_int *deb) |
| 822 | { |
| 823 | int err; |
| 824 | |
| 825 | debug = deb; |
| 826 | err = sock_register(&mISDN_sock_family_ops); |
| 827 | if (err) |
| 828 | printk(KERN_ERR "%s: error(%d)\n", __func__, err); |
| 829 | return err; |
| 830 | } |
| 831 | |
| 832 | void |
| 833 | misdn_sock_cleanup(void) |
| 834 | { |
| 835 | sock_unregister(PF_ISDN); |
| 836 | } |
| 837 | |