Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* proc.c: /proc interface for RxRPC |
| 2 | * |
| 3 | * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. |
| 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/sched.h> |
| 13 | #include <linux/slab.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/proc_fs.h> |
| 16 | #include <linux/seq_file.h> |
| 17 | #include <rxrpc/rxrpc.h> |
| 18 | #include <rxrpc/transport.h> |
| 19 | #include <rxrpc/peer.h> |
| 20 | #include <rxrpc/connection.h> |
| 21 | #include <rxrpc/call.h> |
| 22 | #include <rxrpc/message.h> |
| 23 | #include "internal.h" |
| 24 | |
| 25 | static struct proc_dir_entry *proc_rxrpc; |
| 26 | |
| 27 | static int rxrpc_proc_transports_open(struct inode *inode, struct file *file); |
| 28 | static void *rxrpc_proc_transports_start(struct seq_file *p, loff_t *pos); |
| 29 | static void *rxrpc_proc_transports_next(struct seq_file *p, void *v, loff_t *pos); |
| 30 | static void rxrpc_proc_transports_stop(struct seq_file *p, void *v); |
| 31 | static int rxrpc_proc_transports_show(struct seq_file *m, void *v); |
| 32 | |
| 33 | static struct seq_operations rxrpc_proc_transports_ops = { |
| 34 | .start = rxrpc_proc_transports_start, |
| 35 | .next = rxrpc_proc_transports_next, |
| 36 | .stop = rxrpc_proc_transports_stop, |
| 37 | .show = rxrpc_proc_transports_show, |
| 38 | }; |
| 39 | |
| 40 | static struct file_operations rxrpc_proc_transports_fops = { |
| 41 | .open = rxrpc_proc_transports_open, |
| 42 | .read = seq_read, |
| 43 | .llseek = seq_lseek, |
| 44 | .release = seq_release, |
| 45 | }; |
| 46 | |
| 47 | static int rxrpc_proc_peers_open(struct inode *inode, struct file *file); |
| 48 | static void *rxrpc_proc_peers_start(struct seq_file *p, loff_t *pos); |
| 49 | static void *rxrpc_proc_peers_next(struct seq_file *p, void *v, loff_t *pos); |
| 50 | static void rxrpc_proc_peers_stop(struct seq_file *p, void *v); |
| 51 | static int rxrpc_proc_peers_show(struct seq_file *m, void *v); |
| 52 | |
| 53 | static struct seq_operations rxrpc_proc_peers_ops = { |
| 54 | .start = rxrpc_proc_peers_start, |
| 55 | .next = rxrpc_proc_peers_next, |
| 56 | .stop = rxrpc_proc_peers_stop, |
| 57 | .show = rxrpc_proc_peers_show, |
| 58 | }; |
| 59 | |
| 60 | static struct file_operations rxrpc_proc_peers_fops = { |
| 61 | .open = rxrpc_proc_peers_open, |
| 62 | .read = seq_read, |
| 63 | .llseek = seq_lseek, |
| 64 | .release = seq_release, |
| 65 | }; |
| 66 | |
| 67 | static int rxrpc_proc_conns_open(struct inode *inode, struct file *file); |
| 68 | static void *rxrpc_proc_conns_start(struct seq_file *p, loff_t *pos); |
| 69 | static void *rxrpc_proc_conns_next(struct seq_file *p, void *v, loff_t *pos); |
| 70 | static void rxrpc_proc_conns_stop(struct seq_file *p, void *v); |
| 71 | static int rxrpc_proc_conns_show(struct seq_file *m, void *v); |
| 72 | |
| 73 | static struct seq_operations rxrpc_proc_conns_ops = { |
| 74 | .start = rxrpc_proc_conns_start, |
| 75 | .next = rxrpc_proc_conns_next, |
| 76 | .stop = rxrpc_proc_conns_stop, |
| 77 | .show = rxrpc_proc_conns_show, |
| 78 | }; |
| 79 | |
| 80 | static struct file_operations rxrpc_proc_conns_fops = { |
| 81 | .open = rxrpc_proc_conns_open, |
| 82 | .read = seq_read, |
| 83 | .llseek = seq_lseek, |
| 84 | .release = seq_release, |
| 85 | }; |
| 86 | |
| 87 | static int rxrpc_proc_calls_open(struct inode *inode, struct file *file); |
| 88 | static void *rxrpc_proc_calls_start(struct seq_file *p, loff_t *pos); |
| 89 | static void *rxrpc_proc_calls_next(struct seq_file *p, void *v, loff_t *pos); |
| 90 | static void rxrpc_proc_calls_stop(struct seq_file *p, void *v); |
| 91 | static int rxrpc_proc_calls_show(struct seq_file *m, void *v); |
| 92 | |
| 93 | static struct seq_operations rxrpc_proc_calls_ops = { |
| 94 | .start = rxrpc_proc_calls_start, |
| 95 | .next = rxrpc_proc_calls_next, |
| 96 | .stop = rxrpc_proc_calls_stop, |
| 97 | .show = rxrpc_proc_calls_show, |
| 98 | }; |
| 99 | |
| 100 | static struct file_operations rxrpc_proc_calls_fops = { |
| 101 | .open = rxrpc_proc_calls_open, |
| 102 | .read = seq_read, |
| 103 | .llseek = seq_lseek, |
| 104 | .release = seq_release, |
| 105 | }; |
| 106 | |
| 107 | static const char *rxrpc_call_states7[] = { |
| 108 | "complet", |
| 109 | "error ", |
| 110 | "rcv_op ", |
| 111 | "rcv_arg", |
| 112 | "got_arg", |
| 113 | "snd_rpl", |
| 114 | "fin_ack", |
| 115 | "snd_arg", |
| 116 | "rcv_rpl", |
| 117 | "got_rpl" |
| 118 | }; |
| 119 | |
| 120 | static const char *rxrpc_call_error_states7[] = { |
| 121 | "no_err ", |
| 122 | "loc_abt", |
| 123 | "rmt_abt", |
| 124 | "loc_err", |
| 125 | "rmt_err" |
| 126 | }; |
| 127 | |
| 128 | /*****************************************************************************/ |
| 129 | /* |
| 130 | * initialise the /proc/net/rxrpc/ directory |
| 131 | */ |
| 132 | int rxrpc_proc_init(void) |
| 133 | { |
| 134 | struct proc_dir_entry *p; |
| 135 | |
| 136 | proc_rxrpc = proc_mkdir("rxrpc", proc_net); |
| 137 | if (!proc_rxrpc) |
| 138 | goto error; |
| 139 | proc_rxrpc->owner = THIS_MODULE; |
| 140 | |
| 141 | p = create_proc_entry("calls", 0, proc_rxrpc); |
| 142 | if (!p) |
| 143 | goto error_proc; |
| 144 | p->proc_fops = &rxrpc_proc_calls_fops; |
| 145 | p->owner = THIS_MODULE; |
| 146 | |
| 147 | p = create_proc_entry("connections", 0, proc_rxrpc); |
| 148 | if (!p) |
| 149 | goto error_calls; |
| 150 | p->proc_fops = &rxrpc_proc_conns_fops; |
| 151 | p->owner = THIS_MODULE; |
| 152 | |
| 153 | p = create_proc_entry("peers", 0, proc_rxrpc); |
| 154 | if (!p) |
| 155 | goto error_calls; |
| 156 | p->proc_fops = &rxrpc_proc_peers_fops; |
| 157 | p->owner = THIS_MODULE; |
| 158 | |
| 159 | p = create_proc_entry("transports", 0, proc_rxrpc); |
| 160 | if (!p) |
| 161 | goto error_conns; |
| 162 | p->proc_fops = &rxrpc_proc_transports_fops; |
| 163 | p->owner = THIS_MODULE; |
| 164 | |
| 165 | return 0; |
| 166 | |
| 167 | error_conns: |
| 168 | remove_proc_entry("connections", proc_rxrpc); |
| 169 | error_calls: |
| 170 | remove_proc_entry("calls", proc_rxrpc); |
| 171 | error_proc: |
| 172 | remove_proc_entry("rxrpc", proc_net); |
| 173 | error: |
| 174 | return -ENOMEM; |
| 175 | } /* end rxrpc_proc_init() */ |
| 176 | |
| 177 | /*****************************************************************************/ |
| 178 | /* |
| 179 | * clean up the /proc/net/rxrpc/ directory |
| 180 | */ |
| 181 | void rxrpc_proc_cleanup(void) |
| 182 | { |
| 183 | remove_proc_entry("transports", proc_rxrpc); |
| 184 | remove_proc_entry("peers", proc_rxrpc); |
| 185 | remove_proc_entry("connections", proc_rxrpc); |
| 186 | remove_proc_entry("calls", proc_rxrpc); |
| 187 | |
| 188 | remove_proc_entry("rxrpc", proc_net); |
| 189 | |
| 190 | } /* end rxrpc_proc_cleanup() */ |
| 191 | |
| 192 | /*****************************************************************************/ |
| 193 | /* |
| 194 | * open "/proc/net/rxrpc/transports" which provides a summary of extant transports |
| 195 | */ |
| 196 | static int rxrpc_proc_transports_open(struct inode *inode, struct file *file) |
| 197 | { |
| 198 | struct seq_file *m; |
| 199 | int ret; |
| 200 | |
| 201 | ret = seq_open(file, &rxrpc_proc_transports_ops); |
| 202 | if (ret < 0) |
| 203 | return ret; |
| 204 | |
| 205 | m = file->private_data; |
| 206 | m->private = PDE(inode)->data; |
| 207 | |
| 208 | return 0; |
| 209 | } /* end rxrpc_proc_transports_open() */ |
| 210 | |
| 211 | /*****************************************************************************/ |
| 212 | /* |
| 213 | * set up the iterator to start reading from the transports list and return the first item |
| 214 | */ |
| 215 | static void *rxrpc_proc_transports_start(struct seq_file *m, loff_t *_pos) |
| 216 | { |
| 217 | struct list_head *_p; |
| 218 | loff_t pos = *_pos; |
| 219 | |
| 220 | /* lock the list against modification */ |
| 221 | down_read(&rxrpc_proc_transports_sem); |
| 222 | |
| 223 | /* allow for the header line */ |
| 224 | if (!pos) |
| 225 | return SEQ_START_TOKEN; |
| 226 | pos--; |
| 227 | |
| 228 | /* find the n'th element in the list */ |
| 229 | list_for_each(_p, &rxrpc_proc_transports) |
| 230 | if (!pos--) |
| 231 | break; |
| 232 | |
| 233 | return _p != &rxrpc_proc_transports ? _p : NULL; |
| 234 | } /* end rxrpc_proc_transports_start() */ |
| 235 | |
| 236 | /*****************************************************************************/ |
| 237 | /* |
| 238 | * move to next call in transports list |
| 239 | */ |
| 240 | static void *rxrpc_proc_transports_next(struct seq_file *p, void *v, loff_t *pos) |
| 241 | { |
| 242 | struct list_head *_p; |
| 243 | |
| 244 | (*pos)++; |
| 245 | |
| 246 | _p = v; |
| 247 | _p = (v == SEQ_START_TOKEN) ? rxrpc_proc_transports.next : _p->next; |
| 248 | |
| 249 | return _p != &rxrpc_proc_transports ? _p : NULL; |
| 250 | } /* end rxrpc_proc_transports_next() */ |
| 251 | |
| 252 | /*****************************************************************************/ |
| 253 | /* |
| 254 | * clean up after reading from the transports list |
| 255 | */ |
| 256 | static void rxrpc_proc_transports_stop(struct seq_file *p, void *v) |
| 257 | { |
| 258 | up_read(&rxrpc_proc_transports_sem); |
| 259 | |
| 260 | } /* end rxrpc_proc_transports_stop() */ |
| 261 | |
| 262 | /*****************************************************************************/ |
| 263 | /* |
| 264 | * display a header line followed by a load of call lines |
| 265 | */ |
| 266 | static int rxrpc_proc_transports_show(struct seq_file *m, void *v) |
| 267 | { |
| 268 | struct rxrpc_transport *trans = |
| 269 | list_entry(v, struct rxrpc_transport, proc_link); |
| 270 | |
| 271 | /* display header on line 1 */ |
| 272 | if (v == SEQ_START_TOKEN) { |
| 273 | seq_puts(m, "LOCAL USE\n"); |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | /* display one transport per line on subsequent lines */ |
| 278 | seq_printf(m, "%5hu %3d\n", |
| 279 | trans->port, |
| 280 | atomic_read(&trans->usage) |
| 281 | ); |
| 282 | |
| 283 | return 0; |
| 284 | } /* end rxrpc_proc_transports_show() */ |
| 285 | |
| 286 | /*****************************************************************************/ |
| 287 | /* |
| 288 | * open "/proc/net/rxrpc/peers" which provides a summary of extant peers |
| 289 | */ |
| 290 | static int rxrpc_proc_peers_open(struct inode *inode, struct file *file) |
| 291 | { |
| 292 | struct seq_file *m; |
| 293 | int ret; |
| 294 | |
| 295 | ret = seq_open(file, &rxrpc_proc_peers_ops); |
| 296 | if (ret < 0) |
| 297 | return ret; |
| 298 | |
| 299 | m = file->private_data; |
| 300 | m->private = PDE(inode)->data; |
| 301 | |
| 302 | return 0; |
| 303 | } /* end rxrpc_proc_peers_open() */ |
| 304 | |
| 305 | /*****************************************************************************/ |
| 306 | /* |
| 307 | * set up the iterator to start reading from the peers list and return the |
| 308 | * first item |
| 309 | */ |
| 310 | static void *rxrpc_proc_peers_start(struct seq_file *m, loff_t *_pos) |
| 311 | { |
| 312 | struct list_head *_p; |
| 313 | loff_t pos = *_pos; |
| 314 | |
| 315 | /* lock the list against modification */ |
| 316 | down_read(&rxrpc_peers_sem); |
| 317 | |
| 318 | /* allow for the header line */ |
| 319 | if (!pos) |
| 320 | return SEQ_START_TOKEN; |
| 321 | pos--; |
| 322 | |
| 323 | /* find the n'th element in the list */ |
| 324 | list_for_each(_p, &rxrpc_peers) |
| 325 | if (!pos--) |
| 326 | break; |
| 327 | |
| 328 | return _p != &rxrpc_peers ? _p : NULL; |
| 329 | } /* end rxrpc_proc_peers_start() */ |
| 330 | |
| 331 | /*****************************************************************************/ |
| 332 | /* |
| 333 | * move to next conn in peers list |
| 334 | */ |
| 335 | static void *rxrpc_proc_peers_next(struct seq_file *p, void *v, loff_t *pos) |
| 336 | { |
| 337 | struct list_head *_p; |
| 338 | |
| 339 | (*pos)++; |
| 340 | |
| 341 | _p = v; |
| 342 | _p = (v == SEQ_START_TOKEN) ? rxrpc_peers.next : _p->next; |
| 343 | |
| 344 | return _p != &rxrpc_peers ? _p : NULL; |
| 345 | } /* end rxrpc_proc_peers_next() */ |
| 346 | |
| 347 | /*****************************************************************************/ |
| 348 | /* |
| 349 | * clean up after reading from the peers list |
| 350 | */ |
| 351 | static void rxrpc_proc_peers_stop(struct seq_file *p, void *v) |
| 352 | { |
| 353 | up_read(&rxrpc_peers_sem); |
| 354 | |
| 355 | } /* end rxrpc_proc_peers_stop() */ |
| 356 | |
| 357 | /*****************************************************************************/ |
| 358 | /* |
| 359 | * display a header line followed by a load of conn lines |
| 360 | */ |
| 361 | static int rxrpc_proc_peers_show(struct seq_file *m, void *v) |
| 362 | { |
| 363 | struct rxrpc_peer *peer = list_entry(v, struct rxrpc_peer, proc_link); |
Kris Katterjohn | a8fc3d8 | 2006-01-17 13:03:54 -0800 | [diff] [blame] | 364 | long timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
| 366 | /* display header on line 1 */ |
| 367 | if (v == SEQ_START_TOKEN) { |
| 368 | seq_puts(m, "LOCAL REMOTE USAGE CONNS TIMEOUT" |
| 369 | " MTU RTT(uS)\n"); |
| 370 | return 0; |
| 371 | } |
| 372 | |
| 373 | /* display one peer per line on subsequent lines */ |
| 374 | timeout = 0; |
| 375 | if (!list_empty(&peer->timeout.link)) |
Kris Katterjohn | a8fc3d8 | 2006-01-17 13:03:54 -0800 | [diff] [blame] | 376 | timeout = (long) peer->timeout.timo_jif - |
| 377 | (long) jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
| 379 | seq_printf(m, "%5hu %08x %5d %5d %8ld %5Zu %7lu\n", |
| 380 | peer->trans->port, |
| 381 | ntohl(peer->addr.s_addr), |
| 382 | atomic_read(&peer->usage), |
| 383 | atomic_read(&peer->conn_count), |
| 384 | timeout, |
| 385 | peer->if_mtu, |
| 386 | (long) peer->rtt |
| 387 | ); |
| 388 | |
| 389 | return 0; |
| 390 | } /* end rxrpc_proc_peers_show() */ |
| 391 | |
| 392 | /*****************************************************************************/ |
| 393 | /* |
| 394 | * open "/proc/net/rxrpc/connections" which provides a summary of extant |
| 395 | * connections |
| 396 | */ |
| 397 | static int rxrpc_proc_conns_open(struct inode *inode, struct file *file) |
| 398 | { |
| 399 | struct seq_file *m; |
| 400 | int ret; |
| 401 | |
| 402 | ret = seq_open(file, &rxrpc_proc_conns_ops); |
| 403 | if (ret < 0) |
| 404 | return ret; |
| 405 | |
| 406 | m = file->private_data; |
| 407 | m->private = PDE(inode)->data; |
| 408 | |
| 409 | return 0; |
| 410 | } /* end rxrpc_proc_conns_open() */ |
| 411 | |
| 412 | /*****************************************************************************/ |
| 413 | /* |
| 414 | * set up the iterator to start reading from the conns list and return the |
| 415 | * first item |
| 416 | */ |
| 417 | static void *rxrpc_proc_conns_start(struct seq_file *m, loff_t *_pos) |
| 418 | { |
| 419 | struct list_head *_p; |
| 420 | loff_t pos = *_pos; |
| 421 | |
| 422 | /* lock the list against modification */ |
| 423 | down_read(&rxrpc_conns_sem); |
| 424 | |
| 425 | /* allow for the header line */ |
| 426 | if (!pos) |
| 427 | return SEQ_START_TOKEN; |
| 428 | pos--; |
| 429 | |
| 430 | /* find the n'th element in the list */ |
| 431 | list_for_each(_p, &rxrpc_conns) |
| 432 | if (!pos--) |
| 433 | break; |
| 434 | |
| 435 | return _p != &rxrpc_conns ? _p : NULL; |
| 436 | } /* end rxrpc_proc_conns_start() */ |
| 437 | |
| 438 | /*****************************************************************************/ |
| 439 | /* |
| 440 | * move to next conn in conns list |
| 441 | */ |
| 442 | static void *rxrpc_proc_conns_next(struct seq_file *p, void *v, loff_t *pos) |
| 443 | { |
| 444 | struct list_head *_p; |
| 445 | |
| 446 | (*pos)++; |
| 447 | |
| 448 | _p = v; |
| 449 | _p = (v == SEQ_START_TOKEN) ? rxrpc_conns.next : _p->next; |
| 450 | |
| 451 | return _p != &rxrpc_conns ? _p : NULL; |
| 452 | } /* end rxrpc_proc_conns_next() */ |
| 453 | |
| 454 | /*****************************************************************************/ |
| 455 | /* |
| 456 | * clean up after reading from the conns list |
| 457 | */ |
| 458 | static void rxrpc_proc_conns_stop(struct seq_file *p, void *v) |
| 459 | { |
| 460 | up_read(&rxrpc_conns_sem); |
| 461 | |
| 462 | } /* end rxrpc_proc_conns_stop() */ |
| 463 | |
| 464 | /*****************************************************************************/ |
| 465 | /* |
| 466 | * display a header line followed by a load of conn lines |
| 467 | */ |
| 468 | static int rxrpc_proc_conns_show(struct seq_file *m, void *v) |
| 469 | { |
| 470 | struct rxrpc_connection *conn; |
Kris Katterjohn | a8fc3d8 | 2006-01-17 13:03:54 -0800 | [diff] [blame] | 471 | long timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
| 473 | conn = list_entry(v, struct rxrpc_connection, proc_link); |
| 474 | |
| 475 | /* display header on line 1 */ |
| 476 | if (v == SEQ_START_TOKEN) { |
| 477 | seq_puts(m, |
| 478 | "LOCAL REMOTE RPORT SRVC CONN END SERIALNO " |
| 479 | "CALLNO MTU TIMEOUT" |
| 480 | "\n"); |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | /* display one conn per line on subsequent lines */ |
| 485 | timeout = 0; |
| 486 | if (!list_empty(&conn->timeout.link)) |
Kris Katterjohn | a8fc3d8 | 2006-01-17 13:03:54 -0800 | [diff] [blame] | 487 | timeout = (long) conn->timeout.timo_jif - |
| 488 | (long) jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | |
| 490 | seq_printf(m, |
| 491 | "%5hu %08x %5hu %04hx %08x %-3.3s %08x %08x %5Zu %8ld\n", |
| 492 | conn->trans->port, |
| 493 | ntohl(conn->addr.sin_addr.s_addr), |
| 494 | ntohs(conn->addr.sin_port), |
| 495 | ntohs(conn->service_id), |
| 496 | ntohl(conn->conn_id), |
| 497 | conn->out_clientflag ? "CLT" : "SRV", |
| 498 | conn->serial_counter, |
| 499 | conn->call_counter, |
| 500 | conn->mtu_size, |
| 501 | timeout |
| 502 | ); |
| 503 | |
| 504 | return 0; |
| 505 | } /* end rxrpc_proc_conns_show() */ |
| 506 | |
| 507 | /*****************************************************************************/ |
| 508 | /* |
| 509 | * open "/proc/net/rxrpc/calls" which provides a summary of extant calls |
| 510 | */ |
| 511 | static int rxrpc_proc_calls_open(struct inode *inode, struct file *file) |
| 512 | { |
| 513 | struct seq_file *m; |
| 514 | int ret; |
| 515 | |
| 516 | ret = seq_open(file, &rxrpc_proc_calls_ops); |
| 517 | if (ret < 0) |
| 518 | return ret; |
| 519 | |
| 520 | m = file->private_data; |
| 521 | m->private = PDE(inode)->data; |
| 522 | |
| 523 | return 0; |
| 524 | } /* end rxrpc_proc_calls_open() */ |
| 525 | |
| 526 | /*****************************************************************************/ |
| 527 | /* |
| 528 | * set up the iterator to start reading from the calls list and return the |
| 529 | * first item |
| 530 | */ |
| 531 | static void *rxrpc_proc_calls_start(struct seq_file *m, loff_t *_pos) |
| 532 | { |
| 533 | struct list_head *_p; |
| 534 | loff_t pos = *_pos; |
| 535 | |
| 536 | /* lock the list against modification */ |
| 537 | down_read(&rxrpc_calls_sem); |
| 538 | |
| 539 | /* allow for the header line */ |
| 540 | if (!pos) |
| 541 | return SEQ_START_TOKEN; |
| 542 | pos--; |
| 543 | |
| 544 | /* find the n'th element in the list */ |
| 545 | list_for_each(_p, &rxrpc_calls) |
| 546 | if (!pos--) |
| 547 | break; |
| 548 | |
| 549 | return _p != &rxrpc_calls ? _p : NULL; |
| 550 | } /* end rxrpc_proc_calls_start() */ |
| 551 | |
| 552 | /*****************************************************************************/ |
| 553 | /* |
| 554 | * move to next call in calls list |
| 555 | */ |
| 556 | static void *rxrpc_proc_calls_next(struct seq_file *p, void *v, loff_t *pos) |
| 557 | { |
| 558 | struct list_head *_p; |
| 559 | |
| 560 | (*pos)++; |
| 561 | |
| 562 | _p = v; |
| 563 | _p = (v == SEQ_START_TOKEN) ? rxrpc_calls.next : _p->next; |
| 564 | |
| 565 | return _p != &rxrpc_calls ? _p : NULL; |
| 566 | } /* end rxrpc_proc_calls_next() */ |
| 567 | |
| 568 | /*****************************************************************************/ |
| 569 | /* |
| 570 | * clean up after reading from the calls list |
| 571 | */ |
| 572 | static void rxrpc_proc_calls_stop(struct seq_file *p, void *v) |
| 573 | { |
| 574 | up_read(&rxrpc_calls_sem); |
| 575 | |
| 576 | } /* end rxrpc_proc_calls_stop() */ |
| 577 | |
| 578 | /*****************************************************************************/ |
| 579 | /* |
| 580 | * display a header line followed by a load of call lines |
| 581 | */ |
| 582 | static int rxrpc_proc_calls_show(struct seq_file *m, void *v) |
| 583 | { |
| 584 | struct rxrpc_call *call = list_entry(v, struct rxrpc_call, call_link); |
| 585 | |
| 586 | /* display header on line 1 */ |
| 587 | if (v == SEQ_START_TOKEN) { |
| 588 | seq_puts(m, |
| 589 | "LOCAL REMOT SRVC CONN CALL DIR USE " |
| 590 | " L STATE OPCODE ABORT ERRNO\n" |
| 591 | ); |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | /* display one call per line on subsequent lines */ |
| 596 | seq_printf(m, |
| 597 | "%5hu %5hu %04hx %08x %08x %s %3u%c" |
| 598 | " %c %-7.7s %6d %08x %5d\n", |
| 599 | call->conn->trans->port, |
| 600 | ntohs(call->conn->addr.sin_port), |
| 601 | ntohs(call->conn->service_id), |
| 602 | ntohl(call->conn->conn_id), |
| 603 | ntohl(call->call_id), |
| 604 | call->conn->service ? "SVC" : "CLT", |
| 605 | atomic_read(&call->usage), |
| 606 | waitqueue_active(&call->waitq) ? 'w' : ' ', |
| 607 | call->app_last_rcv ? 'Y' : '-', |
| 608 | (call->app_call_state!=RXRPC_CSTATE_ERROR ? |
| 609 | rxrpc_call_states7[call->app_call_state] : |
| 610 | rxrpc_call_error_states7[call->app_err_state]), |
| 611 | call->app_opcode, |
| 612 | call->app_abort_code, |
| 613 | call->app_errno |
| 614 | ); |
| 615 | |
| 616 | return 0; |
| 617 | } /* end rxrpc_proc_calls_show() */ |