Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * LAPB release 002 |
| 3 | * |
| 4 | * This code REQUIRES 2.1.15 or higher/ NET3.038 |
| 5 | * |
| 6 | * This module: |
| 7 | * This module is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * History |
| 13 | * LAPB 001 Jonathan Naylor Started Coding |
| 14 | * LAPB 002 Jonathan Naylor New timer architecture. |
| 15 | * 2000-10-29 Henner Eisen lapb_data_indication() return status. |
| 16 | */ |
YOSHIFUJI Hideaki | 56d6c3d | 2007-02-09 23:24:59 +0900 | [diff] [blame] | 17 | |
Joe Perches | a508da6 | 2012-05-17 10:25:49 +0000 | [diff] [blame] | 18 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/module.h> |
| 21 | #include <linux/errno.h> |
| 22 | #include <linux/types.h> |
| 23 | #include <linux/socket.h> |
| 24 | #include <linux/in.h> |
| 25 | #include <linux/kernel.h> |
| 26 | #include <linux/jiffies.h> |
| 27 | #include <linux/timer.h> |
| 28 | #include <linux/string.h> |
| 29 | #include <linux/sockios.h> |
| 30 | #include <linux/net.h> |
| 31 | #include <linux/inet.h> |
| 32 | #include <linux/if_arp.h> |
| 33 | #include <linux/skbuff.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <net/sock.h> |
| 36 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/fcntl.h> |
| 38 | #include <linux/mm.h> |
| 39 | #include <linux/interrupt.h> |
| 40 | #include <linux/stat.h> |
| 41 | #include <linux/init.h> |
| 42 | #include <net/lapb.h> |
| 43 | |
Denis Cheng | 14d0e7b | 2007-12-07 00:50:15 -0800 | [diff] [blame] | 44 | static LIST_HEAD(lapb_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | static DEFINE_RWLOCK(lapb_list_lock); |
| 46 | |
| 47 | /* |
YOSHIFUJI Hideaki | 56d6c3d | 2007-02-09 23:24:59 +0900 | [diff] [blame] | 48 | * Free an allocated lapb control block. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | */ |
| 50 | static void lapb_free_cb(struct lapb_cb *lapb) |
| 51 | { |
| 52 | kfree(lapb); |
| 53 | } |
| 54 | |
| 55 | static __inline__ void lapb_hold(struct lapb_cb *lapb) |
| 56 | { |
| 57 | atomic_inc(&lapb->refcnt); |
| 58 | } |
| 59 | |
| 60 | static __inline__ void lapb_put(struct lapb_cb *lapb) |
| 61 | { |
| 62 | if (atomic_dec_and_test(&lapb->refcnt)) |
| 63 | lapb_free_cb(lapb); |
| 64 | } |
| 65 | |
| 66 | /* |
| 67 | * Socket removal during an interrupt is now safe. |
| 68 | */ |
| 69 | static void __lapb_remove_cb(struct lapb_cb *lapb) |
| 70 | { |
| 71 | if (lapb->node.next) { |
| 72 | list_del(&lapb->node); |
| 73 | lapb_put(lapb); |
| 74 | } |
| 75 | } |
Fabian Frederick | 75da1469 | 2014-10-22 21:01:41 +0200 | [diff] [blame] | 76 | EXPORT_SYMBOL(lapb_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
| 78 | /* |
| 79 | * Add a socket to the bound sockets list. |
| 80 | */ |
| 81 | static void __lapb_insert_cb(struct lapb_cb *lapb) |
| 82 | { |
| 83 | list_add(&lapb->node, &lapb_list); |
| 84 | lapb_hold(lapb); |
| 85 | } |
| 86 | |
| 87 | static struct lapb_cb *__lapb_devtostruct(struct net_device *dev) |
| 88 | { |
| 89 | struct list_head *entry; |
| 90 | struct lapb_cb *lapb, *use = NULL; |
| 91 | |
| 92 | list_for_each(entry, &lapb_list) { |
| 93 | lapb = list_entry(entry, struct lapb_cb, node); |
| 94 | if (lapb->dev == dev) { |
| 95 | use = lapb; |
| 96 | break; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | if (use) |
| 101 | lapb_hold(use); |
| 102 | |
| 103 | return use; |
| 104 | } |
| 105 | |
| 106 | static struct lapb_cb *lapb_devtostruct(struct net_device *dev) |
| 107 | { |
| 108 | struct lapb_cb *rc; |
| 109 | |
| 110 | read_lock_bh(&lapb_list_lock); |
| 111 | rc = __lapb_devtostruct(dev); |
| 112 | read_unlock_bh(&lapb_list_lock); |
| 113 | |
| 114 | return rc; |
| 115 | } |
| 116 | /* |
| 117 | * Create an empty LAPB control block. |
| 118 | */ |
| 119 | static struct lapb_cb *lapb_create_cb(void) |
| 120 | { |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 121 | struct lapb_cb *lapb = kzalloc(sizeof(*lapb), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
| 123 | |
| 124 | if (!lapb) |
| 125 | goto out; |
| 126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | skb_queue_head_init(&lapb->write_queue); |
| 128 | skb_queue_head_init(&lapb->ack_queue); |
| 129 | |
| 130 | init_timer(&lapb->t1timer); |
| 131 | init_timer(&lapb->t2timer); |
| 132 | |
| 133 | lapb->t1 = LAPB_DEFAULT_T1; |
| 134 | lapb->t2 = LAPB_DEFAULT_T2; |
| 135 | lapb->n2 = LAPB_DEFAULT_N2; |
| 136 | lapb->mode = LAPB_DEFAULT_MODE; |
| 137 | lapb->window = LAPB_DEFAULT_WINDOW; |
| 138 | lapb->state = LAPB_STATE_0; |
| 139 | atomic_set(&lapb->refcnt, 1); |
| 140 | out: |
| 141 | return lapb; |
| 142 | } |
| 143 | |
stephen hemminger | d97a077 | 2011-09-16 11:04:29 +0000 | [diff] [blame] | 144 | int lapb_register(struct net_device *dev, |
| 145 | const struct lapb_register_struct *callbacks) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | { |
| 147 | struct lapb_cb *lapb; |
| 148 | int rc = LAPB_BADTOKEN; |
| 149 | |
| 150 | write_lock_bh(&lapb_list_lock); |
| 151 | |
| 152 | lapb = __lapb_devtostruct(dev); |
| 153 | if (lapb) { |
| 154 | lapb_put(lapb); |
| 155 | goto out; |
| 156 | } |
| 157 | |
| 158 | lapb = lapb_create_cb(); |
| 159 | rc = LAPB_NOMEM; |
| 160 | if (!lapb) |
| 161 | goto out; |
| 162 | |
| 163 | lapb->dev = dev; |
stephen hemminger | d97a077 | 2011-09-16 11:04:29 +0000 | [diff] [blame] | 164 | lapb->callbacks = callbacks; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | __lapb_insert_cb(lapb); |
| 167 | |
| 168 | lapb_start_t1timer(lapb); |
| 169 | |
| 170 | rc = LAPB_OK; |
| 171 | out: |
| 172 | write_unlock_bh(&lapb_list_lock); |
| 173 | return rc; |
| 174 | } |
| 175 | |
| 176 | int lapb_unregister(struct net_device *dev) |
| 177 | { |
| 178 | struct lapb_cb *lapb; |
| 179 | int rc = LAPB_BADTOKEN; |
| 180 | |
| 181 | write_lock_bh(&lapb_list_lock); |
| 182 | lapb = __lapb_devtostruct(dev); |
| 183 | if (!lapb) |
| 184 | goto out; |
| 185 | |
| 186 | lapb_stop_t1timer(lapb); |
| 187 | lapb_stop_t2timer(lapb); |
| 188 | |
| 189 | lapb_clear_queues(lapb); |
| 190 | |
| 191 | __lapb_remove_cb(lapb); |
| 192 | |
| 193 | lapb_put(lapb); |
| 194 | rc = LAPB_OK; |
| 195 | out: |
| 196 | write_unlock_bh(&lapb_list_lock); |
| 197 | return rc; |
| 198 | } |
Fabian Frederick | 75da1469 | 2014-10-22 21:01:41 +0200 | [diff] [blame] | 199 | EXPORT_SYMBOL(lapb_unregister); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
| 201 | int lapb_getparms(struct net_device *dev, struct lapb_parms_struct *parms) |
| 202 | { |
| 203 | int rc = LAPB_BADTOKEN; |
| 204 | struct lapb_cb *lapb = lapb_devtostruct(dev); |
| 205 | |
| 206 | if (!lapb) |
| 207 | goto out; |
| 208 | |
| 209 | parms->t1 = lapb->t1 / HZ; |
| 210 | parms->t2 = lapb->t2 / HZ; |
| 211 | parms->n2 = lapb->n2; |
| 212 | parms->n2count = lapb->n2count; |
| 213 | parms->state = lapb->state; |
| 214 | parms->window = lapb->window; |
| 215 | parms->mode = lapb->mode; |
| 216 | |
| 217 | if (!timer_pending(&lapb->t1timer)) |
| 218 | parms->t1timer = 0; |
| 219 | else |
| 220 | parms->t1timer = (lapb->t1timer.expires - jiffies) / HZ; |
| 221 | |
| 222 | if (!timer_pending(&lapb->t2timer)) |
| 223 | parms->t2timer = 0; |
| 224 | else |
| 225 | parms->t2timer = (lapb->t2timer.expires - jiffies) / HZ; |
| 226 | |
| 227 | lapb_put(lapb); |
| 228 | rc = LAPB_OK; |
| 229 | out: |
| 230 | return rc; |
| 231 | } |
Fabian Frederick | 75da1469 | 2014-10-22 21:01:41 +0200 | [diff] [blame] | 232 | EXPORT_SYMBOL(lapb_getparms); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
| 234 | int lapb_setparms(struct net_device *dev, struct lapb_parms_struct *parms) |
| 235 | { |
| 236 | int rc = LAPB_BADTOKEN; |
| 237 | struct lapb_cb *lapb = lapb_devtostruct(dev); |
| 238 | |
| 239 | if (!lapb) |
| 240 | goto out; |
| 241 | |
| 242 | rc = LAPB_INVALUE; |
| 243 | if (parms->t1 < 1 || parms->t2 < 1 || parms->n2 < 1) |
| 244 | goto out_put; |
| 245 | |
| 246 | if (lapb->state == LAPB_STATE_0) { |
Diego Calleja | 558e10a | 2006-08-05 21:15:58 -0700 | [diff] [blame] | 247 | if (parms->mode & LAPB_EXTENDED) { |
| 248 | if (parms->window < 1 || parms->window > 127) |
| 249 | goto out_put; |
| 250 | } else { |
| 251 | if (parms->window < 1 || parms->window > 7) |
| 252 | goto out_put; |
| 253 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | lapb->mode = parms->mode; |
| 255 | lapb->window = parms->window; |
| 256 | } |
| 257 | |
| 258 | lapb->t1 = parms->t1 * HZ; |
| 259 | lapb->t2 = parms->t2 * HZ; |
| 260 | lapb->n2 = parms->n2; |
| 261 | |
| 262 | rc = LAPB_OK; |
| 263 | out_put: |
| 264 | lapb_put(lapb); |
| 265 | out: |
| 266 | return rc; |
| 267 | } |
Fabian Frederick | 75da1469 | 2014-10-22 21:01:41 +0200 | [diff] [blame] | 268 | EXPORT_SYMBOL(lapb_setparms); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
| 270 | int lapb_connect_request(struct net_device *dev) |
| 271 | { |
| 272 | struct lapb_cb *lapb = lapb_devtostruct(dev); |
| 273 | int rc = LAPB_BADTOKEN; |
| 274 | |
| 275 | if (!lapb) |
| 276 | goto out; |
| 277 | |
| 278 | rc = LAPB_OK; |
| 279 | if (lapb->state == LAPB_STATE_1) |
| 280 | goto out_put; |
| 281 | |
| 282 | rc = LAPB_CONNECTED; |
| 283 | if (lapb->state == LAPB_STATE_3 || lapb->state == LAPB_STATE_4) |
| 284 | goto out_put; |
| 285 | |
| 286 | lapb_establish_data_link(lapb); |
| 287 | |
Joe Perches | a508da6 | 2012-05-17 10:25:49 +0000 | [diff] [blame] | 288 | lapb_dbg(0, "(%p) S0 -> S1\n", lapb->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | lapb->state = LAPB_STATE_1; |
| 290 | |
| 291 | rc = LAPB_OK; |
| 292 | out_put: |
| 293 | lapb_put(lapb); |
| 294 | out: |
| 295 | return rc; |
| 296 | } |
Fabian Frederick | 75da1469 | 2014-10-22 21:01:41 +0200 | [diff] [blame] | 297 | EXPORT_SYMBOL(lapb_connect_request); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
| 299 | int lapb_disconnect_request(struct net_device *dev) |
| 300 | { |
| 301 | struct lapb_cb *lapb = lapb_devtostruct(dev); |
| 302 | int rc = LAPB_BADTOKEN; |
| 303 | |
| 304 | if (!lapb) |
| 305 | goto out; |
| 306 | |
| 307 | switch (lapb->state) { |
Joe Perches | fcb261f | 2011-07-01 09:43:09 +0000 | [diff] [blame] | 308 | case LAPB_STATE_0: |
| 309 | rc = LAPB_NOTCONNECTED; |
| 310 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
Joe Perches | fcb261f | 2011-07-01 09:43:09 +0000 | [diff] [blame] | 312 | case LAPB_STATE_1: |
Joe Perches | a508da6 | 2012-05-17 10:25:49 +0000 | [diff] [blame] | 313 | lapb_dbg(1, "(%p) S1 TX DISC(1)\n", lapb->dev); |
| 314 | lapb_dbg(0, "(%p) S1 -> S0\n", lapb->dev); |
Joe Perches | fcb261f | 2011-07-01 09:43:09 +0000 | [diff] [blame] | 315 | lapb_send_control(lapb, LAPB_DISC, LAPB_POLLON, LAPB_COMMAND); |
| 316 | lapb->state = LAPB_STATE_0; |
| 317 | lapb_start_t1timer(lapb); |
| 318 | rc = LAPB_NOTCONNECTED; |
| 319 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
Joe Perches | fcb261f | 2011-07-01 09:43:09 +0000 | [diff] [blame] | 321 | case LAPB_STATE_2: |
| 322 | rc = LAPB_OK; |
| 323 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | lapb_clear_queues(lapb); |
| 327 | lapb->n2count = 0; |
| 328 | lapb_send_control(lapb, LAPB_DISC, LAPB_POLLON, LAPB_COMMAND); |
| 329 | lapb_start_t1timer(lapb); |
| 330 | lapb_stop_t2timer(lapb); |
| 331 | lapb->state = LAPB_STATE_2; |
| 332 | |
Joe Perches | a508da6 | 2012-05-17 10:25:49 +0000 | [diff] [blame] | 333 | lapb_dbg(1, "(%p) S3 DISC(1)\n", lapb->dev); |
| 334 | lapb_dbg(0, "(%p) S3 -> S2\n", lapb->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
| 336 | rc = LAPB_OK; |
| 337 | out_put: |
| 338 | lapb_put(lapb); |
| 339 | out: |
| 340 | return rc; |
| 341 | } |
Fabian Frederick | 75da1469 | 2014-10-22 21:01:41 +0200 | [diff] [blame] | 342 | EXPORT_SYMBOL(lapb_disconnect_request); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
| 344 | int lapb_data_request(struct net_device *dev, struct sk_buff *skb) |
| 345 | { |
| 346 | struct lapb_cb *lapb = lapb_devtostruct(dev); |
| 347 | int rc = LAPB_BADTOKEN; |
| 348 | |
| 349 | if (!lapb) |
| 350 | goto out; |
| 351 | |
| 352 | rc = LAPB_NOTCONNECTED; |
| 353 | if (lapb->state != LAPB_STATE_3 && lapb->state != LAPB_STATE_4) |
| 354 | goto out_put; |
| 355 | |
| 356 | skb_queue_tail(&lapb->write_queue, skb); |
| 357 | lapb_kick(lapb); |
| 358 | rc = LAPB_OK; |
| 359 | out_put: |
| 360 | lapb_put(lapb); |
| 361 | out: |
| 362 | return rc; |
| 363 | } |
Fabian Frederick | 75da1469 | 2014-10-22 21:01:41 +0200 | [diff] [blame] | 364 | EXPORT_SYMBOL(lapb_data_request); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
| 366 | int lapb_data_received(struct net_device *dev, struct sk_buff *skb) |
| 367 | { |
| 368 | struct lapb_cb *lapb = lapb_devtostruct(dev); |
| 369 | int rc = LAPB_BADTOKEN; |
| 370 | |
| 371 | if (lapb) { |
| 372 | lapb_data_input(lapb, skb); |
| 373 | lapb_put(lapb); |
| 374 | rc = LAPB_OK; |
| 375 | } |
| 376 | |
| 377 | return rc; |
| 378 | } |
Fabian Frederick | 75da1469 | 2014-10-22 21:01:41 +0200 | [diff] [blame] | 379 | EXPORT_SYMBOL(lapb_data_received); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
| 381 | void lapb_connect_confirmation(struct lapb_cb *lapb, int reason) |
| 382 | { |
stephen hemminger | d97a077 | 2011-09-16 11:04:29 +0000 | [diff] [blame] | 383 | if (lapb->callbacks->connect_confirmation) |
| 384 | lapb->callbacks->connect_confirmation(lapb->dev, reason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | } |
| 386 | |
| 387 | void lapb_connect_indication(struct lapb_cb *lapb, int reason) |
| 388 | { |
stephen hemminger | d97a077 | 2011-09-16 11:04:29 +0000 | [diff] [blame] | 389 | if (lapb->callbacks->connect_indication) |
| 390 | lapb->callbacks->connect_indication(lapb->dev, reason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | void lapb_disconnect_confirmation(struct lapb_cb *lapb, int reason) |
| 394 | { |
stephen hemminger | d97a077 | 2011-09-16 11:04:29 +0000 | [diff] [blame] | 395 | if (lapb->callbacks->disconnect_confirmation) |
| 396 | lapb->callbacks->disconnect_confirmation(lapb->dev, reason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | void lapb_disconnect_indication(struct lapb_cb *lapb, int reason) |
| 400 | { |
stephen hemminger | d97a077 | 2011-09-16 11:04:29 +0000 | [diff] [blame] | 401 | if (lapb->callbacks->disconnect_indication) |
| 402 | lapb->callbacks->disconnect_indication(lapb->dev, reason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | } |
| 404 | |
| 405 | int lapb_data_indication(struct lapb_cb *lapb, struct sk_buff *skb) |
| 406 | { |
stephen hemminger | d97a077 | 2011-09-16 11:04:29 +0000 | [diff] [blame] | 407 | if (lapb->callbacks->data_indication) |
| 408 | return lapb->callbacks->data_indication(lapb->dev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | kfree_skb(skb); |
Florian Westphal | 0e8635a | 2009-06-20 00:53:25 +0000 | [diff] [blame] | 411 | return NET_RX_SUCCESS; /* For now; must be != NET_RX_DROP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | int lapb_data_transmit(struct lapb_cb *lapb, struct sk_buff *skb) |
| 415 | { |
| 416 | int used = 0; |
| 417 | |
stephen hemminger | d97a077 | 2011-09-16 11:04:29 +0000 | [diff] [blame] | 418 | if (lapb->callbacks->data_transmit) { |
| 419 | lapb->callbacks->data_transmit(lapb->dev, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | used = 1; |
| 421 | } |
| 422 | |
| 423 | return used; |
| 424 | } |
| 425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | static int __init lapb_init(void) |
| 427 | { |
| 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | static void __exit lapb_exit(void) |
| 432 | { |
| 433 | WARN_ON(!list_empty(&lapb_list)); |
| 434 | } |
| 435 | |
| 436 | MODULE_AUTHOR("Jonathan Naylor <g4klx@g4klx.demon.co.uk>"); |
| 437 | MODULE_DESCRIPTION("The X.25 Link Access Procedure B link layer protocol"); |
| 438 | MODULE_LICENSE("GPL"); |
| 439 | |
| 440 | module_init(lapb_init); |
| 441 | module_exit(lapb_exit); |