Thomas Gleixner | 47505b8 | 2019-05-23 11:14:41 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Vlad Yasevich | 60c778b | 2008-01-11 09:57:09 -0500 | [diff] [blame] | 2 | /* SCTP kernel implementation |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Copyright (c) 2003 International Business Machines, Corp. |
| 4 | * |
Vlad Yasevich | 60c778b | 2008-01-11 09:57:09 -0500 | [diff] [blame] | 5 | * This file is part of the SCTP kernel implementation |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * Please send any bug reports or fixes you make to the |
| 8 | * email address(es): |
Daniel Borkmann | 91705c6 | 2013-07-23 14:51:47 +0200 | [diff] [blame] | 9 | * lksctp developers <linux-sctp@vger.kernel.org> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * Written or modified by: |
| 12 | * Sridhar Samudrala <sri@us.ibm.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | */ |
| 14 | |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/seq_file.h> |
| 17 | #include <linux/init.h> |
Paul Gortmaker | bc3b2d7 | 2011-07-15 11:47:34 -0400 | [diff] [blame] | 18 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <net/sctp/sctp.h> |
Pavel Emelyanov | 3f5340a | 2008-02-09 23:23:44 -0800 | [diff] [blame] | 20 | #include <net/ip.h> /* for snmp_fold_field */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Alexey Dobriyan | 5833929 | 2010-01-22 10:17:26 +0000 | [diff] [blame] | 22 | static const struct snmp_mib sctp_snmp_list[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB), |
| 24 | SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS), |
| 25 | SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS), |
| 26 | SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS), |
| 27 | SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS), |
| 28 | SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES), |
| 29 | SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS), |
| 30 | SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS), |
| 31 | SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS), |
| 32 | SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS), |
| 33 | SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS), |
| 34 | SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS), |
| 35 | SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS), |
| 36 | SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS), |
| 37 | SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS), |
| 38 | SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS), |
| 39 | SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS), |
Sridhar Samudrala | ac0b046 | 2006-08-22 00:15:33 -0700 | [diff] [blame] | 40 | SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS), |
| 41 | SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS), |
| 42 | SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS), |
| 43 | SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS), |
| 44 | SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS), |
| 45 | SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS), |
| 46 | SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS), |
| 47 | SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS), |
| 48 | SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS), |
| 49 | SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS), |
| 50 | SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS), |
| 51 | SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ), |
| 52 | SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG), |
| 53 | SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS), |
| 54 | SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS), |
Vlad Yasevich | d2287f8 | 2005-08-23 10:12:04 -0700 | [diff] [blame] | 55 | SNMP_MIB_SENTINEL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | }; |
| 57 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ |
| 59 | static int sctp_snmp_seq_show(struct seq_file *seq, void *v) |
| 60 | { |
Jia He | 7d64a94 | 2016-09-30 11:29:01 +0800 | [diff] [blame] | 61 | unsigned long buff[SCTP_MIB_MAX]; |
Eric W. Biederman | 13d782f | 2012-08-06 08:45:15 +0000 | [diff] [blame] | 62 | struct net *net = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | int i; |
| 64 | |
Jia He | 7d64a94 | 2016-09-30 11:29:01 +0800 | [diff] [blame] | 65 | memset(buff, 0, sizeof(unsigned long) * SCTP_MIB_MAX); |
| 66 | |
| 67 | snmp_get_cpu_field_batch(buff, sctp_snmp_list, |
| 68 | net->sctp.sctp_statistics); |
Jia He | 6d4a741 | 2016-09-30 11:29:04 +0800 | [diff] [blame] | 69 | for (i = 0; sctp_snmp_list[i].name; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, |
Jia He | 7d64a94 | 2016-09-30 11:29:01 +0800 | [diff] [blame] | 71 | buff[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | return 0; |
| 74 | } |
| 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | /* Dump local addresses of an association/endpoint. */ |
| 77 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) |
| 78 | { |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 79 | struct sctp_association *asoc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | struct sctp_sockaddr_entry *laddr; |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 81 | struct sctp_transport *peer; |
| 82 | union sctp_addr *addr, *primary = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | struct sctp_af *af; |
| 84 | |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 85 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
Daniel Borkmann | f9e42b8 | 2013-06-14 18:24:04 +0200 | [diff] [blame] | 86 | asoc = sctp_assoc(epb); |
| 87 | |
| 88 | peer = asoc->peer.primary_path; |
| 89 | if (unlikely(peer == NULL)) { |
Daniel Borkmann | b527fe6 | 2013-06-25 18:17:28 +0200 | [diff] [blame] | 90 | WARN(1, "Association %p with NULL primary path!\n", asoc); |
Daniel Borkmann | f9e42b8 | 2013-06-14 18:24:04 +0200 | [diff] [blame] | 91 | return; |
| 92 | } |
| 93 | |
| 94 | primary = &peer->saddr; |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 95 | } |
| 96 | |
Thomas Graf | 0b0fe91 | 2012-12-06 09:25:04 +0000 | [diff] [blame] | 97 | rcu_read_lock(); |
| 98 | list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) { |
| 99 | if (!laddr->valid) |
| 100 | continue; |
| 101 | |
Al Viro | 5f242a13 | 2006-11-20 17:05:23 -0800 | [diff] [blame] | 102 | addr = &laddr->a; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | af = sctp_get_af_specific(addr->sa.sa_family); |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 104 | if (primary && af->cmp_addr(addr, primary)) { |
| 105 | seq_printf(seq, "*"); |
| 106 | } |
Al Viro | 5f242a13 | 2006-11-20 17:05:23 -0800 | [diff] [blame] | 107 | af->seq_dump_addr(seq, addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | } |
Thomas Graf | 0b0fe91 | 2012-12-06 09:25:04 +0000 | [diff] [blame] | 109 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | /* Dump remote addresses of an association. */ |
| 113 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) |
| 114 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | struct sctp_transport *transport; |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 116 | union sctp_addr *addr, *primary; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | struct sctp_af *af; |
| 118 | |
Al Viro | acd2bc9 | 2006-11-20 17:06:04 -0800 | [diff] [blame] | 119 | primary = &assoc->peer.primary_addr; |
Thomas Graf | 45122ca26 | 2012-12-06 09:25:05 +0000 | [diff] [blame] | 120 | list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list, |
Robert P. J. Day | 9dbc15f0 | 2008-04-12 18:54:24 -0700 | [diff] [blame] | 121 | transports) { |
Al Viro | 5f242a13 | 2006-11-20 17:05:23 -0800 | [diff] [blame] | 122 | addr = &transport->ipaddr; |
Thomas Graf | 45122ca26 | 2012-12-06 09:25:05 +0000 | [diff] [blame] | 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | af = sctp_get_af_specific(addr->sa.sa_family); |
Al Viro | acd2bc9 | 2006-11-20 17:06:04 -0800 | [diff] [blame] | 125 | if (af->cmp_addr(addr, primary)) { |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 126 | seq_printf(seq, "*"); |
| 127 | } |
Al Viro | 5f242a13 | 2006-11-20 17:05:23 -0800 | [diff] [blame] | 128 | af->seq_dump_addr(seq, addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | } |
| 130 | } |
| 131 | |
wangweidong | 26ac8e5 | 2013-12-23 12:16:51 +0800 | [diff] [blame] | 132 | static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 133 | { |
Vlad Yasevich | 49392e5 | 2006-01-17 11:53:06 -0800 | [diff] [blame] | 134 | if (*pos >= sctp_ep_hashsize) |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 135 | return NULL; |
| 136 | |
| 137 | if (*pos < 0) |
| 138 | *pos = 0; |
| 139 | |
| 140 | if (*pos == 0) |
| 141 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); |
| 142 | |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 143 | return (void *)pos; |
| 144 | } |
| 145 | |
| 146 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) |
| 147 | { |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | |
wangweidong | 26ac8e5 | 2013-12-23 12:16:51 +0800 | [diff] [blame] | 151 | static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 152 | { |
Vlad Yasevich | 49392e5 | 2006-01-17 11:53:06 -0800 | [diff] [blame] | 153 | if (++*pos >= sctp_ep_hashsize) |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 154 | return NULL; |
| 155 | |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 156 | return pos; |
| 157 | } |
| 158 | |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
| 161 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) |
| 162 | { |
| 163 | struct sctp_hashbucket *head; |
| 164 | struct sctp_ep_common *epb; |
| 165 | struct sctp_endpoint *ep; |
| 166 | struct sock *sk; |
Vlad Yasevich | 38b0e42 | 2006-01-17 11:54:06 -0800 | [diff] [blame] | 167 | int hash = *(loff_t *)v; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
Vlad Yasevich | 49392e5 | 2006-01-17 11:53:06 -0800 | [diff] [blame] | 169 | if (hash >= sctp_ep_hashsize) |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 170 | return -ENOMEM; |
| 171 | |
Vlad Yasevich | 49392e5 | 2006-01-17 11:53:06 -0800 | [diff] [blame] | 172 | head = &sctp_ep_hashtable[hash]; |
Xin Long | c0a4c2d | 2017-06-10 15:13:32 +0800 | [diff] [blame] | 173 | read_lock_bh(&head->lock); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 174 | sctp_for_each_hentry(epb, &head->chain) { |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 175 | ep = sctp_ep(epb); |
| 176 | sk = epb->sk; |
Ulrich Weber | 6932f11 | 2012-08-16 01:24:49 +0000 | [diff] [blame] | 177 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
Eric W. Biederman | 13d782f | 2012-08-06 08:45:15 +0000 | [diff] [blame] | 178 | continue; |
Francesco Fusco | d14c5ab | 2013-08-15 13:42:14 +0200 | [diff] [blame] | 179 | seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk, |
Vlad Yasevich | 49392e5 | 2006-01-17 11:53:06 -0800 | [diff] [blame] | 180 | sctp_sk(sk)->type, sk->sk_state, hash, |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 181 | epb->bind_addr.port, |
Eric W. Biederman | a7cb5a4 | 2012-05-24 01:10:10 -0600 | [diff] [blame] | 182 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
| 183 | sock_i_ino(sk)); |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 184 | |
| 185 | sctp_seq_dump_local_addrs(seq, epb); |
| 186 | seq_printf(seq, "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | } |
Xin Long | c0a4c2d | 2017-06-10 15:13:32 +0800 | [diff] [blame] | 188 | read_unlock_bh(&head->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
Philippe De Muyter | 56b3d97 | 2007-07-10 23:07:31 -0700 | [diff] [blame] | 193 | static const struct seq_operations sctp_eps_ops = { |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 194 | .start = sctp_eps_seq_start, |
| 195 | .next = sctp_eps_seq_next, |
| 196 | .stop = sctp_eps_seq_stop, |
| 197 | .show = sctp_eps_seq_show, |
| 198 | }; |
| 199 | |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 200 | struct sctp_ht_iter { |
| 201 | struct seq_net_private p; |
| 202 | struct rhashtable_iter hti; |
| 203 | }; |
| 204 | |
Xin Long | b5e2f4e | 2016-04-14 15:35:34 +0800 | [diff] [blame] | 205 | static void *sctp_transport_seq_start(struct seq_file *seq, loff_t *pos) |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 206 | { |
Xin Long | 626d16f | 2016-04-14 15:35:31 +0800 | [diff] [blame] | 207 | struct sctp_ht_iter *iter = seq->private; |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 208 | |
Tom Herbert | 97a6ec4 | 2017-12-04 10:31:41 -0800 | [diff] [blame] | 209 | sctp_transport_walk_start(&iter->hti); |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 210 | |
Xin Long | 626d16f | 2016-04-14 15:35:31 +0800 | [diff] [blame] | 211 | return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos); |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 212 | } |
| 213 | |
Xin Long | b5e2f4e | 2016-04-14 15:35:34 +0800 | [diff] [blame] | 214 | static void sctp_transport_seq_stop(struct seq_file *seq, void *v) |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 215 | { |
Xin Long | 626d16f | 2016-04-14 15:35:31 +0800 | [diff] [blame] | 216 | struct sctp_ht_iter *iter = seq->private; |
| 217 | |
| 218 | sctp_transport_walk_stop(&iter->hti); |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 219 | } |
| 220 | |
Xin Long | b5e2f4e | 2016-04-14 15:35:34 +0800 | [diff] [blame] | 221 | static void *sctp_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 222 | { |
Xin Long | 626d16f | 2016-04-14 15:35:31 +0800 | [diff] [blame] | 223 | struct sctp_ht_iter *iter = seq->private; |
| 224 | |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 225 | ++*pos; |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 226 | |
Xin Long | 626d16f | 2016-04-14 15:35:31 +0800 | [diff] [blame] | 227 | return sctp_transport_get_next(seq_file_net(seq), &iter->hti); |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 228 | } |
| 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
| 231 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) |
| 232 | { |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 233 | struct sctp_transport *transport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | struct sctp_association *assoc; |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 235 | struct sctp_ep_common *epb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | struct sock *sk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 238 | if (v == SEQ_START_TOKEN) { |
| 239 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " |
| 240 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " |
| 241 | "RPORT LADDRS <-> RADDRS " |
| 242 | "HBINT INS OUTS MAXRT T1X T2X RTXC " |
| 243 | "wmema wmemq sndbuf rcvbuf\n"); |
| 244 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | } |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 246 | |
| 247 | transport = (struct sctp_transport *)v; |
| 248 | assoc = transport->asoc; |
| 249 | epb = &assoc->base; |
| 250 | sk = epb->sk; |
| 251 | |
| 252 | seq_printf(seq, |
| 253 | "%8pK %8pK %-3d %-3d %-2d %-4d " |
| 254 | "%4d %8d %8d %7u %5lu %-5d %5d ", |
| 255 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, |
| 256 | assoc->state, 0, |
| 257 | assoc->assoc_id, |
| 258 | assoc->sndbuf_used, |
| 259 | atomic_read(&assoc->rmem_alloc), |
| 260 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
| 261 | sock_i_ino(sk), |
| 262 | epb->bind_addr.port, |
| 263 | assoc->peer.port); |
| 264 | seq_printf(seq, " "); |
| 265 | sctp_seq_dump_local_addrs(seq, epb); |
| 266 | seq_printf(seq, "<-> "); |
| 267 | sctp_seq_dump_remote_addrs(seq, assoc); |
| 268 | seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d " |
| 269 | "%8d %8d %8d %8d", |
Xin Long | cee360a | 2017-05-31 16:36:31 +0800 | [diff] [blame] | 270 | assoc->hbinterval, assoc->stream.incnt, |
| 271 | assoc->stream.outcnt, assoc->max_retrans, |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 272 | assoc->init_retries, assoc->shutdown_retries, |
| 273 | assoc->rtx_data_chunks, |
Reshetova, Elena | 14afee4 | 2017-06-30 13:08:00 +0300 | [diff] [blame] | 274 | refcount_read(&sk->sk_wmem_alloc), |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 275 | sk->sk_wmem_queued, |
| 276 | sk->sk_sndbuf, |
| 277 | sk->sk_rcvbuf); |
| 278 | seq_printf(seq, "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
Xin Long | fba4c33 | 2016-01-22 01:49:08 +0800 | [diff] [blame] | 280 | sctp_transport_put(transport); |
| 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | return 0; |
| 283 | } |
| 284 | |
Philippe De Muyter | 56b3d97 | 2007-07-10 23:07:31 -0700 | [diff] [blame] | 285 | static const struct seq_operations sctp_assoc_ops = { |
Xin Long | b5e2f4e | 2016-04-14 15:35:34 +0800 | [diff] [blame] | 286 | .start = sctp_transport_seq_start, |
| 287 | .next = sctp_transport_seq_next, |
| 288 | .stop = sctp_transport_seq_stop, |
Vladislav Yasevich | bca735b | 2005-06-13 15:11:57 -0700 | [diff] [blame] | 289 | .show = sctp_assocs_seq_show, |
| 290 | }; |
| 291 | |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 292 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) |
| 293 | { |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 294 | struct sctp_association *assoc; |
Xin Long | 3d73e8f | 2016-02-28 10:33:11 +0800 | [diff] [blame] | 295 | struct sctp_transport *transport, *tsp; |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 296 | |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 297 | if (v == SEQ_START_TOKEN) { |
| 298 | seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " |
| 299 | "REM_ADDR_RTX START STATE\n"); |
| 300 | return 0; |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 301 | } |
| 302 | |
Xin Long | 3d73e8f | 2016-02-28 10:33:11 +0800 | [diff] [blame] | 303 | transport = (struct sctp_transport *)v; |
Xin Long | 3d73e8f | 2016-02-28 10:33:11 +0800 | [diff] [blame] | 304 | assoc = transport->asoc; |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 305 | |
| 306 | list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list, |
| 307 | transports) { |
Xin Long | 39f66a7 | 2015-12-30 23:50:48 +0800 | [diff] [blame] | 308 | /* |
| 309 | * The remote address (ADDR) |
| 310 | */ |
| 311 | tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); |
| 312 | seq_printf(seq, " "); |
| 313 | /* |
| 314 | * The association ID (ASSOC_ID) |
| 315 | */ |
| 316 | seq_printf(seq, "%d ", tsp->asoc->assoc_id); |
| 317 | |
| 318 | /* |
| 319 | * If the Heartbeat is active (HB_ACT) |
| 320 | * Note: 1 = Active, 0 = Inactive |
| 321 | */ |
| 322 | seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer)); |
| 323 | |
| 324 | /* |
| 325 | * Retransmit time out (RTO) |
| 326 | */ |
| 327 | seq_printf(seq, "%lu ", tsp->rto); |
| 328 | |
| 329 | /* |
| 330 | * Maximum path retransmit count (PATH_MAX_RTX) |
| 331 | */ |
| 332 | seq_printf(seq, "%d ", tsp->pathmaxrxt); |
| 333 | |
| 334 | /* |
| 335 | * remote address retransmit count (REM_ADDR_RTX) |
| 336 | * Note: We don't have a way to tally this at the moment |
| 337 | * so lets just leave it as zero for the moment |
| 338 | */ |
| 339 | seq_puts(seq, "0 "); |
| 340 | |
| 341 | /* |
| 342 | * remote address start time (START). This is also not |
| 343 | * currently implemented, but we can record it with a |
| 344 | * jiffies marker in a subsequent patch |
| 345 | */ |
| 346 | seq_puts(seq, "0 "); |
| 347 | |
| 348 | /* |
| 349 | * The current state of this destination. I.e. |
| 350 | * SCTP_ACTIVE, SCTP_INACTIVE, ... |
| 351 | */ |
| 352 | seq_printf(seq, "%d", tsp->state); |
| 353 | |
| 354 | seq_printf(seq, "\n"); |
| 355 | } |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 356 | |
Xin Long | 3d73e8f | 2016-02-28 10:33:11 +0800 | [diff] [blame] | 357 | sctp_transport_put(transport); |
Xin Long | fba4c33 | 2016-01-22 01:49:08 +0800 | [diff] [blame] | 358 | |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 359 | return 0; |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | static const struct seq_operations sctp_remaddr_ops = { |
Xin Long | b5e2f4e | 2016-04-14 15:35:34 +0800 | [diff] [blame] | 363 | .start = sctp_transport_seq_start, |
| 364 | .next = sctp_transport_seq_next, |
| 365 | .stop = sctp_transport_seq_stop, |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 366 | .show = sctp_remaddr_seq_show, |
| 367 | }; |
| 368 | |
Al Viro | d47d08c | 2018-03-16 23:32:51 +0000 | [diff] [blame] | 369 | /* Set up the proc fs entry for the SCTP protocol. */ |
| 370 | int __net_init sctp_proc_init(struct net *net) |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 371 | { |
Al Viro | d47d08c | 2018-03-16 23:32:51 +0000 | [diff] [blame] | 372 | net->sctp.proc_net_sctp = proc_net_mkdir(net, "sctp", net->proc_net); |
| 373 | if (!net->sctp.proc_net_sctp) |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 374 | return -ENOMEM; |
Christoph Hellwig | 3617d94 | 2018-04-13 20:38:35 +0200 | [diff] [blame] | 375 | if (!proc_create_net_single("snmp", 0444, net->sctp.proc_net_sctp, |
| 376 | sctp_snmp_seq_show, NULL)) |
Al Viro | d47d08c | 2018-03-16 23:32:51 +0000 | [diff] [blame] | 377 | goto cleanup; |
Christoph Hellwig | c350637 | 2018-04-10 19:42:55 +0200 | [diff] [blame] | 378 | if (!proc_create_net("eps", 0444, net->sctp.proc_net_sctp, |
| 379 | &sctp_eps_ops, sizeof(struct seq_net_private))) |
Al Viro | d47d08c | 2018-03-16 23:32:51 +0000 | [diff] [blame] | 380 | goto cleanup; |
Christoph Hellwig | c350637 | 2018-04-10 19:42:55 +0200 | [diff] [blame] | 381 | if (!proc_create_net("assocs", 0444, net->sctp.proc_net_sctp, |
| 382 | &sctp_assoc_ops, sizeof(struct sctp_ht_iter))) |
Al Viro | d47d08c | 2018-03-16 23:32:51 +0000 | [diff] [blame] | 383 | goto cleanup; |
Christoph Hellwig | c350637 | 2018-04-10 19:42:55 +0200 | [diff] [blame] | 384 | if (!proc_create_net("remaddr", 0444, net->sctp.proc_net_sctp, |
| 385 | &sctp_remaddr_ops, sizeof(struct sctp_ht_iter))) |
Al Viro | d47d08c | 2018-03-16 23:32:51 +0000 | [diff] [blame] | 386 | goto cleanup; |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 387 | return 0; |
Al Viro | d47d08c | 2018-03-16 23:32:51 +0000 | [diff] [blame] | 388 | |
| 389 | cleanup: |
| 390 | remove_proc_subtree("sctp", net->proc_net); |
| 391 | net->sctp.proc_net_sctp = NULL; |
| 392 | return -ENOMEM; |
Neil Horman | 20c2c1f | 2008-05-09 15:14:50 -0700 | [diff] [blame] | 393 | } |