/* SCTP kernel reference Implementation * Copyright (c) 2003 International Business Machines, Corp. * * This file is part of the SCTP kernel reference Implementation * * The SCTP reference implementation is free software; * you can redistribute it and/or modify it under the terms of * the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * The SCTP reference implementation is distributed in the hope that it * will be useful, but WITHOUT ANY WARRANTY; without even the implied * ************************ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GNU CC; see the file COPYING. If not, write to * the Free Software Foundation, 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * * Please send any bug reports or fixes you make to the * email address(es): * lksctp developers * * Or submit a bug report through the following website: * http://www.sf.net/projects/lksctp * * Written or modified by: * Sridhar Samudrala * * Any bugs reported given to us we will try to fix... any fixes shared will * be incorporated into the next SCTP release. */ #include #include #include #include static struct snmp_mib sctp_snmp_list[] = { SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB), SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS), SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS), SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS), SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS), SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES), SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS), SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS), SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS), SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS), SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS), SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS), SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS), SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS), SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS), SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS), SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS), SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS), SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS), SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS), SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS), SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS), SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS), SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS), SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS), SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS), SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS), SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS), SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ), SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG), SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS), SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS), SNMP_MIB_SENTINEL }; /* Return the current value of a particular entry in the mib by adding its * per cpu counters. */ static unsigned long fold_field(void *mib[], int nr) { unsigned long res = 0; int i; for_each_possible_cpu(i) { res += *((unsigned long *) (((void *) per_cpu_ptr(mib[0], i)) + sizeof (unsigned long) * nr)); res += *((unsigned long *) (((void *) per_cpu_ptr(mib[1], i)) + sizeof (unsigned long) * nr)); } return res; } /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ static int sctp_snmp_seq_show(struct seq_file *seq, void *v) { int i; for (i = 0; sctp_snmp_list[i].name != NULL; i++) seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, fold_field((void **)sctp_statistics, sctp_snmp_list[i].entry)); return 0; } /* Initialize the seq file operations for 'snmp' object. */ static int sctp_snmp_seq_open(struct inode *inode, struct file *file) { return single_open(file, sctp_snmp_seq_show, NULL); } static const struct file_operations sctp_snmp_seq_fops = { .owner = THIS_MODULE, .open = sctp_snmp_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; /* Set up the proc fs entry for 'snmp' object. */ int __init sctp_snmp_proc_init(void) { struct proc_dir_entry *p; p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp); if (!p) return -ENOMEM; p->proc_fops = &sctp_snmp_seq_fops; return 0; } /* Cleanup the proc fs entry for 'snmp' object. */ void sctp_snmp_proc_exit(void) { remove_proc_entry("snmp", proc_net_sctp); } /* Dump local addresses of an association/endpoint. */ static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) { struct list_head *pos; struct sctp_association *asoc; struct sctp_sockaddr_entry *laddr; struct sctp_transport *peer; union sctp_addr *addr, *primary = NULL; struct sctp_af *af; if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { asoc = sctp_assoc(epb); peer = asoc->peer.primary_path; primary = &peer->saddr; } list_for_each(pos, &epb->bind_addr.address_list) { laddr = list_entry(pos, struct sctp_sockaddr_entry, list); addr = &laddr->a; af = sctp_get_af_specific(addr->sa.sa_family); if (primary && af->cmp_addr(addr, primary)) { seq_printf(seq, "*"); } af->seq_dump_addr(seq, addr); } } /* Dump remote addresses of an association. */ static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) { struct list_head *pos; struct sctp_transport *transport; union sctp_addr *addr, *primary; struct sctp_af *af; primary = &assoc->peer.primary_addr; list_for_each(pos, &assoc->peer.transport_addr_list) { transport = list_entry(pos, struct sctp_transport, transports); addr = &transport->ipaddr; af = sctp_get_af_specific(addr->sa.sa_family); if (af->cmp_addr(addr, primary)) { seq_printf(seq, "*"); } af->seq_dump_addr(seq, addr); } } static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) { if (*pos >= sctp_ep_hashsize) return NULL; if (*pos < 0) *pos = 0; if (*pos == 0) seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); return (void *)pos; } static void sctp_eps_seq_stop(struct seq_file *seq, void *v) { return; } static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) { if (++*pos >= sctp_ep_hashsize) return NULL; return pos; } /* Display sctp endpoints (/proc/net/sctp/eps). */ static int sctp_eps_seq_show(struct seq_file *seq, void *v) { struct sctp_hashbucket *head; struct sctp_ep_common *epb; struct sctp_endpoint *ep; struct sock *sk; struct hlist_node *node; int hash = *(loff_t *)v; if (hash >= sctp_ep_hashsize) return -ENOMEM; head = &sctp_ep_hashtable[hash]; sctp_local_bh_disable(); read_lock(&head->lock); sctp_for_each_hentry(epb, node, &head->chain) { ep = sctp_ep(epb); sk = epb->sk; seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk, sctp_sk(sk)->type, sk->sk_state, hash, epb->bind_addr.port, sock_i_uid(sk), sock_i_ino(sk)); sctp_seq_dump_local_addrs(seq, epb); seq_printf(seq, "\n"); } read_unlock(&head->lock); sctp_local_bh_enable(); return 0; } static const struct seq_operations sctp_eps_ops = { .start = sctp_eps_seq_start, .next = sctp_eps_seq_next, .stop = sctp_eps_seq_stop, .show = sctp_eps_seq_show, }; /* Initialize the seq file operations for 'eps' object. */ static int sctp_eps_seq_open(struct inode *inode, struct file *file) { return seq_open(file, &sctp_eps_ops); } static const struct file_operations sctp_eps_seq_fops = { .open = sctp_eps_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; /* Set up the proc fs entry for 'eps' object. */ int __init sctp_eps_proc_init(void) { struct proc_dir_entry *p; p = create_proc_entry("eps", S_IRUGO, proc_net_sctp); if (!p) return -ENOMEM; p->proc_fops = &sctp_eps_seq_fops; return 0; } /* Cleanup the proc fs entry for 'eps' object. */ void sctp_eps_proc_exit(void) { remove_proc_entry("eps", proc_net_sctp); } static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos) { if (*pos >= sctp_assoc_hashsize) return NULL; if (*pos < 0) *pos = 0; if (*pos == 0) seq_printf(seq, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " "RPORT LADDRS <-> RADDRS\n"); return (void *)pos; } static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) { return; } static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) { if (++*pos >= sctp_assoc_hashsize) return NULL; return pos; } /* Display sctp associations (/proc/net/sctp/assocs). */ static int sctp_assocs_seq_show(struct seq_file *seq, void *v) { struct sctp_hashbucket *head; struct sctp_ep_common *epb; struct sctp_association *assoc; struct sock *sk; struct hlist_node *node; int hash = *(loff_t *)v; if (hash >= sctp_assoc_hashsize) return -ENOMEM; head = &sctp_assoc_hashtable[hash]; sctp_local_bh_disable(); read_lock(&head->lock); sctp_for_each_hentry(epb, node, &head->chain) { assoc = sctp_assoc(epb); sk = epb->sk; seq_printf(seq, "%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ", assoc, sk, sctp_sk(sk)->type, sk->sk_state, assoc->state, hash, assoc->assoc_id, assoc->sndbuf_used, atomic_read(&assoc->rmem_alloc), sock_i_uid(sk), sock_i_ino(sk), epb->bind_addr.port, assoc->peer.port); seq_printf(seq, " "); sctp_seq_dump_local_addrs(seq, epb); seq_printf(seq, "<-> "); sctp_seq_dump_remote_addrs(seq, assoc); seq_printf(seq, "\n"); } read_unlock(&head->lock); sctp_local_bh_enable(); return 0; } static const struct seq_operations sctp_assoc_ops = { .start = sctp_assocs_seq_start, .next = sctp_assocs_seq_next, .stop = sctp_assocs_seq_stop, .show = sctp_assocs_seq_show, }; /* Initialize the seq file operations for 'assocs' object. */ static int sctp_assocs_seq_open(struct inode *inode, struct file *file) { return seq_open(file, &sctp_assoc_ops); } static const struct file_operations sctp_assocs_seq_fops = { .open = sctp_assocs_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; /* Set up the proc fs entry for 'assocs' object. */ int __init sctp_assocs_proc_init(void) { struct proc_dir_entry *p; p = create_proc_entry("assocs", S_IRUGO, proc_net_sctp); if (!p) return -ENOMEM; p->proc_fops = &sctp_assocs_seq_fops; return 0; } /* Cleanup the proc fs entry for 'assocs' object. */ void sctp_assocs_proc_exit(void) { remove_proc_entry("assocs", proc_net_sctp); }