linux/net/sctp/proc.c
<<
>>
Prefs
   1/* SCTP kernel implementation
   2 * Copyright (c) 2003 International Business Machines, Corp.
   3 *
   4 * This file is part of the SCTP kernel implementation
   5 *
   6 * This SCTP implementation is free software;
   7 * you can redistribute it and/or modify it under the terms of
   8 * the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2, or (at your option)
  10 * any later version.
  11 *
  12 * This SCTP implementation is distributed in the hope that it
  13 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  14 *                 ************************
  15 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16 * See the GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with GNU CC; see the file COPYING.  If not, write to
  20 * the Free Software Foundation, 59 Temple Place - Suite 330,
  21 * Boston, MA 02111-1307, USA.
  22 *
  23 * Please send any bug reports or fixes you make to the
  24 * email address(es):
  25 *    lksctp developers <lksctp-developers@lists.sourceforge.net>
  26 *
  27 * Or submit a bug report through the following website:
  28 *    http://www.sf.net/projects/lksctp
  29 *
  30 * Written or modified by:
  31 *    Sridhar Samudrala <sri@us.ibm.com>
  32 *
  33 * Any bugs reported given to us we will try to fix... any fixes shared will
  34 * be incorporated into the next SCTP release.
  35 */
  36
  37#include <linux/types.h>
  38#include <linux/seq_file.h>
  39#include <linux/init.h>
  40#include <linux/export.h>
  41#include <net/sctp/sctp.h>
  42#include <net/ip.h> /* for snmp_fold_field */
  43
  44static const struct snmp_mib sctp_snmp_list[] = {
  45        SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
  46        SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
  47        SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
  48        SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
  49        SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
  50        SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
  51        SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
  52        SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
  53        SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
  54        SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
  55        SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
  56        SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
  57        SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
  58        SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
  59        SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
  60        SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
  61        SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
  62        SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
  63        SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
  64        SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
  65        SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
  66        SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
  67        SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
  68        SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
  69        SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
  70        SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
  71        SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
  72        SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
  73        SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
  74        SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
  75        SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
  76        SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
  77        SNMP_MIB_SENTINEL
  78};
  79
  80/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
  81static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
  82{
  83        int i;
  84
  85        for (i = 0; sctp_snmp_list[i].name != NULL; i++)
  86                seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
  87                           snmp_fold_field((void __percpu **)sctp_statistics,
  88                                      sctp_snmp_list[i].entry));
  89
  90        return 0;
  91}
  92
  93/* Initialize the seq file operations for 'snmp' object. */
  94static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
  95{
  96        return single_open(file, sctp_snmp_seq_show, NULL);
  97}
  98
  99static const struct file_operations sctp_snmp_seq_fops = {
 100        .owner   = THIS_MODULE,
 101        .open    = sctp_snmp_seq_open,
 102        .read    = seq_read,
 103        .llseek  = seq_lseek,
 104        .release = single_release,
 105};
 106
 107/* Set up the proc fs entry for 'snmp' object. */
 108int __init sctp_snmp_proc_init(void)
 109{
 110        struct proc_dir_entry *p;
 111
 112        p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
 113        if (!p)
 114                return -ENOMEM;
 115
 116        return 0;
 117}
 118
 119/* Cleanup the proc fs entry for 'snmp' object. */
 120void sctp_snmp_proc_exit(void)
 121{
 122        remove_proc_entry("snmp", proc_net_sctp);
 123}
 124
 125/* Dump local addresses of an association/endpoint. */
 126static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
 127{
 128        struct sctp_association *asoc;
 129        struct sctp_sockaddr_entry *laddr;
 130        struct sctp_transport *peer;
 131        union sctp_addr *addr, *primary = NULL;
 132        struct sctp_af *af;
 133
 134        if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
 135            asoc = sctp_assoc(epb);
 136            peer = asoc->peer.primary_path;
 137            primary = &peer->saddr;
 138        }
 139
 140        list_for_each_entry(laddr, &epb->bind_addr.address_list, list) {
 141                addr = &laddr->a;
 142                af = sctp_get_af_specific(addr->sa.sa_family);
 143                if (primary && af->cmp_addr(addr, primary)) {
 144                        seq_printf(seq, "*");
 145                }
 146                af->seq_dump_addr(seq, addr);
 147        }
 148}
 149
 150/* Dump remote addresses of an association. */
 151static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
 152{
 153        struct sctp_transport *transport;
 154        union sctp_addr *addr, *primary;
 155        struct sctp_af *af;
 156
 157        primary = &assoc->peer.primary_addr;
 158        list_for_each_entry(transport, &assoc->peer.transport_addr_list,
 159                        transports) {
 160                addr = &transport->ipaddr;
 161                af = sctp_get_af_specific(addr->sa.sa_family);
 162                if (af->cmp_addr(addr, primary)) {
 163                        seq_printf(seq, "*");
 164                }
 165                af->seq_dump_addr(seq, addr);
 166        }
 167}
 168
 169static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
 170{
 171        if (*pos >= sctp_ep_hashsize)
 172                return NULL;
 173
 174        if (*pos < 0)
 175                *pos = 0;
 176
 177        if (*pos == 0)
 178                seq_printf(seq, " ENDPT     SOCK   STY SST HBKT LPORT   UID INODE LADDRS\n");
 179
 180        return (void *)pos;
 181}
 182
 183static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
 184{
 185}
 186
 187
 188static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 189{
 190        if (++*pos >= sctp_ep_hashsize)
 191                return NULL;
 192
 193        return pos;
 194}
 195
 196
 197/* Display sctp endpoints (/proc/net/sctp/eps). */
 198static int sctp_eps_seq_show(struct seq_file *seq, void *v)
 199{
 200        struct sctp_hashbucket *head;
 201        struct sctp_ep_common *epb;
 202        struct sctp_endpoint *ep;
 203        struct sock *sk;
 204        struct hlist_node *node;
 205        int    hash = *(loff_t *)v;
 206
 207        if (hash >= sctp_ep_hashsize)
 208                return -ENOMEM;
 209
 210        head = &sctp_ep_hashtable[hash];
 211        sctp_local_bh_disable();
 212        read_lock(&head->lock);
 213        sctp_for_each_hentry(epb, node, &head->chain) {
 214                ep = sctp_ep(epb);
 215                sk = epb->sk;
 216                seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
 217                           sctp_sk(sk)->type, sk->sk_state, hash,
 218                           epb->bind_addr.port,
 219                           sock_i_uid(sk), sock_i_ino(sk));
 220
 221                sctp_seq_dump_local_addrs(seq, epb);
 222                seq_printf(seq, "\n");
 223        }
 224        read_unlock(&head->lock);
 225        sctp_local_bh_enable();
 226
 227        return 0;
 228}
 229
 230static const struct seq_operations sctp_eps_ops = {
 231        .start = sctp_eps_seq_start,
 232        .next  = sctp_eps_seq_next,
 233        .stop  = sctp_eps_seq_stop,
 234        .show  = sctp_eps_seq_show,
 235};
 236
 237
 238/* Initialize the seq file operations for 'eps' object. */
 239static int sctp_eps_seq_open(struct inode *inode, struct file *file)
 240{
 241        return seq_open(file, &sctp_eps_ops);
 242}
 243
 244static const struct file_operations sctp_eps_seq_fops = {
 245        .open    = sctp_eps_seq_open,
 246        .read    = seq_read,
 247        .llseek  = seq_lseek,
 248        .release = seq_release,
 249};
 250
 251/* Set up the proc fs entry for 'eps' object. */
 252int __init sctp_eps_proc_init(void)
 253{
 254        struct proc_dir_entry *p;
 255
 256        p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
 257        if (!p)
 258                return -ENOMEM;
 259
 260        return 0;
 261}
 262
 263/* Cleanup the proc fs entry for 'eps' object. */
 264void sctp_eps_proc_exit(void)
 265{
 266        remove_proc_entry("eps", proc_net_sctp);
 267}
 268
 269
 270static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
 271{
 272        if (*pos >= sctp_assoc_hashsize)
 273                return NULL;
 274
 275        if (*pos < 0)
 276                *pos = 0;
 277
 278        if (*pos == 0)
 279                seq_printf(seq, " ASSOC     SOCK   STY SST ST HBKT "
 280                                "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
 281                                "RPORT LADDRS <-> RADDRS "
 282                                "HBINT INS OUTS MAXRT T1X T2X RTXC\n");
 283
 284        return (void *)pos;
 285}
 286
 287static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
 288{
 289}
 290
 291
 292static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 293{
 294        if (++*pos >= sctp_assoc_hashsize)
 295                return NULL;
 296
 297        return pos;
 298}
 299
 300/* Display sctp associations (/proc/net/sctp/assocs). */
 301static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
 302{
 303        struct sctp_hashbucket *head;
 304        struct sctp_ep_common *epb;
 305        struct sctp_association *assoc;
 306        struct sock *sk;
 307        struct hlist_node *node;
 308        int    hash = *(loff_t *)v;
 309
 310        if (hash >= sctp_assoc_hashsize)
 311                return -ENOMEM;
 312
 313        head = &sctp_assoc_hashtable[hash];
 314        sctp_local_bh_disable();
 315        read_lock(&head->lock);
 316        sctp_for_each_hentry(epb, node, &head->chain) {
 317                assoc = sctp_assoc(epb);
 318                sk = epb->sk;
 319                seq_printf(seq,
 320                           "%8pK %8pK %-3d %-3d %-2d %-4d "
 321                           "%4d %8d %8d %7d %5lu %-5d %5d ",
 322                           assoc, sk, sctp_sk(sk)->type, sk->sk_state,
 323                           assoc->state, hash,
 324                           assoc->assoc_id,
 325                           assoc->sndbuf_used,
 326                           atomic_read(&assoc->rmem_alloc),
 327                           sock_i_uid(sk), sock_i_ino(sk),
 328                           epb->bind_addr.port,
 329                           assoc->peer.port);
 330                seq_printf(seq, " ");
 331                sctp_seq_dump_local_addrs(seq, epb);
 332                seq_printf(seq, "<-> ");
 333                sctp_seq_dump_remote_addrs(seq, assoc);
 334                seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ",
 335                        assoc->hbinterval, assoc->c.sinit_max_instreams,
 336                        assoc->c.sinit_num_ostreams, assoc->max_retrans,
 337                        assoc->init_retries, assoc->shutdown_retries,
 338                        assoc->rtx_data_chunks);
 339                seq_printf(seq, "\n");
 340        }
 341        read_unlock(&head->lock);
 342        sctp_local_bh_enable();
 343
 344        return 0;
 345}
 346
 347static const struct seq_operations sctp_assoc_ops = {
 348        .start = sctp_assocs_seq_start,
 349        .next  = sctp_assocs_seq_next,
 350        .stop  = sctp_assocs_seq_stop,
 351        .show  = sctp_assocs_seq_show,
 352};
 353
 354/* Initialize the seq file operations for 'assocs' object. */
 355static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
 356{
 357        return seq_open(file, &sctp_assoc_ops);
 358}
 359
 360static const struct file_operations sctp_assocs_seq_fops = {
 361        .open    = sctp_assocs_seq_open,
 362        .read    = seq_read,
 363        .llseek  = seq_lseek,
 364        .release = seq_release,
 365};
 366
 367/* Set up the proc fs entry for 'assocs' object. */
 368int __init sctp_assocs_proc_init(void)
 369{
 370        struct proc_dir_entry *p;
 371
 372        p = proc_create("assocs", S_IRUGO, proc_net_sctp,
 373                        &sctp_assocs_seq_fops);
 374        if (!p)
 375                return -ENOMEM;
 376
 377        return 0;
 378}
 379
 380/* Cleanup the proc fs entry for 'assocs' object. */
 381void sctp_assocs_proc_exit(void)
 382{
 383        remove_proc_entry("assocs", proc_net_sctp);
 384}
 385
 386static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
 387{
 388        if (*pos >= sctp_assoc_hashsize)
 389                return NULL;
 390
 391        if (*pos < 0)
 392                *pos = 0;
 393
 394        if (*pos == 0)
 395                seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
 396                                "REM_ADDR_RTX  START\n");
 397
 398        return (void *)pos;
 399}
 400
 401static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 402{
 403        if (++*pos >= sctp_assoc_hashsize)
 404                return NULL;
 405
 406        return pos;
 407}
 408
 409static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
 410{
 411}
 412
 413static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
 414{
 415        struct sctp_hashbucket *head;
 416        struct sctp_ep_common *epb;
 417        struct sctp_association *assoc;
 418        struct hlist_node *node;
 419        struct sctp_transport *tsp;
 420        int    hash = *(loff_t *)v;
 421
 422        if (hash >= sctp_assoc_hashsize)
 423                return -ENOMEM;
 424
 425        head = &sctp_assoc_hashtable[hash];
 426        sctp_local_bh_disable();
 427        read_lock(&head->lock);
 428        sctp_for_each_hentry(epb, node, &head->chain) {
 429                assoc = sctp_assoc(epb);
 430                list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
 431                                        transports) {
 432                        /*
 433                         * The remote address (ADDR)
 434                         */
 435                        tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
 436                        seq_printf(seq, " ");
 437
 438                        /*
 439                         * The association ID (ASSOC_ID)
 440                         */
 441                        seq_printf(seq, "%d ", tsp->asoc->assoc_id);
 442
 443                        /*
 444                         * If the Heartbeat is active (HB_ACT)
 445                         * Note: 1 = Active, 0 = Inactive
 446                         */
 447                        seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
 448
 449                        /*
 450                         * Retransmit time out (RTO)
 451                         */
 452                        seq_printf(seq, "%lu ", tsp->rto);
 453
 454                        /*
 455                         * Maximum path retransmit count (PATH_MAX_RTX)
 456                         */
 457                        seq_printf(seq, "%d ", tsp->pathmaxrxt);
 458
 459                        /*
 460                         * remote address retransmit count (REM_ADDR_RTX)
 461                         * Note: We don't have a way to tally this at the moment
 462                         * so lets just leave it as zero for the moment
 463                         */
 464                        seq_printf(seq, "0 ");
 465
 466                        /*
 467                         * remote address start time (START).  This is also not
 468                         * currently implemented, but we can record it with a
 469                         * jiffies marker in a subsequent patch
 470                         */
 471                        seq_printf(seq, "0");
 472
 473                        seq_printf(seq, "\n");
 474                }
 475        }
 476
 477        read_unlock(&head->lock);
 478        sctp_local_bh_enable();
 479
 480        return 0;
 481
 482}
 483
 484static const struct seq_operations sctp_remaddr_ops = {
 485        .start = sctp_remaddr_seq_start,
 486        .next  = sctp_remaddr_seq_next,
 487        .stop  = sctp_remaddr_seq_stop,
 488        .show  = sctp_remaddr_seq_show,
 489};
 490
 491/* Cleanup the proc fs entry for 'remaddr' object. */
 492void sctp_remaddr_proc_exit(void)
 493{
 494        remove_proc_entry("remaddr", proc_net_sctp);
 495}
 496
 497static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
 498{
 499        return seq_open(file, &sctp_remaddr_ops);
 500}
 501
 502static const struct file_operations sctp_remaddr_seq_fops = {
 503        .open = sctp_remaddr_seq_open,
 504        .read = seq_read,
 505        .llseek = seq_lseek,
 506        .release = seq_release,
 507};
 508
 509int __init sctp_remaddr_proc_init(void)
 510{
 511        struct proc_dir_entry *p;
 512
 513        p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
 514        if (!p)
 515                return -ENOMEM;
 516        return 0;
 517}
 518
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.