diff options
Diffstat (limited to 'kernel/net/sctp/proc.c')
| -rw-r--r-- | kernel/net/sctp/proc.c | 555 |
1 files changed, 555 insertions, 0 deletions
diff --git a/kernel/net/sctp/proc.c b/kernel/net/sctp/proc.c new file mode 100644 index 000000000..0697eda5a --- /dev/null +++ b/kernel/net/sctp/proc.c @@ -0,0 +1,555 @@ +/* SCTP kernel implementation + * Copyright (c) 2003 International Business Machines, Corp. + * + * This file is part of the SCTP kernel implementation + * + * This SCTP 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. + * + * This SCTP 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, see + * <http://www.gnu.org/licenses/>. + * + * Please send any bug reports or fixes you make to the + * email address(es): + * lksctp developers <linux-sctp@vger.kernel.org> + * + * Written or modified by: + * Sridhar Samudrala <sri@us.ibm.com> + */ + +#include <linux/types.h> +#include <linux/seq_file.h> +#include <linux/init.h> +#include <linux/export.h> +#include <net/sctp/sctp.h> +#include <net/ip.h> /* for snmp_fold_field */ + +static const 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 +}; + +/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ +static int sctp_snmp_seq_show(struct seq_file *seq, void *v) +{ + struct net *net = seq->private; + int i; + + for (i = 0; sctp_snmp_list[i].name != NULL; i++) + seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, + snmp_fold_field(net->sctp.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_net(inode, file, sctp_snmp_seq_show); +} + +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_net, +}; + +/* Set up the proc fs entry for 'snmp' object. */ +int __net_init sctp_snmp_proc_init(struct net *net) +{ + struct proc_dir_entry *p; + + p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp, + &sctp_snmp_seq_fops); + if (!p) + return -ENOMEM; + + return 0; +} + +/* Cleanup the proc fs entry for 'snmp' object. */ +void sctp_snmp_proc_exit(struct net *net) +{ + remove_proc_entry("snmp", net->sctp.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 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; + if (unlikely(peer == NULL)) { + WARN(1, "Association %p with NULL primary path!\n", asoc); + return; + } + + primary = &peer->saddr; + } + + rcu_read_lock(); + list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) { + if (!laddr->valid) + continue; + + 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); + } + rcu_read_unlock(); +} + +/* Dump remote addresses of an association. */ +static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) +{ + struct sctp_transport *transport; + union sctp_addr *addr, *primary; + struct sctp_af *af; + + primary = &assoc->peer.primary_addr; + rcu_read_lock(); + list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list, + transports) { + addr = &transport->ipaddr; + if (transport->dead) + continue; + + af = sctp_get_af_specific(addr->sa.sa_family); + if (af->cmp_addr(addr, primary)) { + seq_printf(seq, "*"); + } + af->seq_dump_addr(seq, addr); + } + rcu_read_unlock(); +} + +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) +{ +} + + +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; + int hash = *(loff_t *)v; + + if (hash >= sctp_ep_hashsize) + return -ENOMEM; + + head = &sctp_ep_hashtable[hash]; + local_bh_disable(); + read_lock(&head->lock); + sctp_for_each_hentry(epb, &head->chain) { + ep = sctp_ep(epb); + sk = epb->sk; + if (!net_eq(sock_net(sk), seq_file_net(seq))) + continue; + seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk, + sctp_sk(sk)->type, sk->sk_state, hash, + epb->bind_addr.port, + from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), + sock_i_ino(sk)); + + sctp_seq_dump_local_addrs(seq, epb); + seq_printf(seq, "\n"); + } + read_unlock(&head->lock); + 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_net(inode, file, &sctp_eps_ops, + sizeof(struct seq_net_private)); +} + +static const struct file_operations sctp_eps_seq_fops = { + .open = sctp_eps_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_net, +}; + +/* Set up the proc fs entry for 'eps' object. */ +int __net_init sctp_eps_proc_init(struct net *net) +{ + struct proc_dir_entry *p; + + p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp, + &sctp_eps_seq_fops); + if (!p) + return -ENOMEM; + + return 0; +} + +/* Cleanup the proc fs entry for 'eps' object. */ +void sctp_eps_proc_exit(struct net *net) +{ + remove_proc_entry("eps", net->sctp.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 " + "HBINT INS OUTS MAXRT T1X T2X RTXC " + "wmema wmemq sndbuf rcvbuf\n"); + + return (void *)pos; +} + +static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) +{ +} + + +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; + int hash = *(loff_t *)v; + + if (hash >= sctp_assoc_hashsize) + return -ENOMEM; + + head = &sctp_assoc_hashtable[hash]; + local_bh_disable(); + read_lock(&head->lock); + sctp_for_each_hentry(epb, &head->chain) { + assoc = sctp_assoc(epb); + sk = epb->sk; + if (!net_eq(sock_net(sk), seq_file_net(seq))) + continue; + seq_printf(seq, + "%8pK %8pK %-3d %-3d %-2d %-4d " + "%4d %8d %8d %7u %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), + from_kuid_munged(seq_user_ns(seq), 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, "\t%8lu %5d %5d %4d %4d %4d %8d " + "%8d %8d %8d %8d", + assoc->hbinterval, assoc->c.sinit_max_instreams, + assoc->c.sinit_num_ostreams, assoc->max_retrans, + assoc->init_retries, assoc->shutdown_retries, + assoc->rtx_data_chunks, + atomic_read(&sk->sk_wmem_alloc), + sk->sk_wmem_queued, + sk->sk_sndbuf, + sk->sk_rcvbuf); + seq_printf(seq, "\n"); + } + read_unlock(&head->lock); + 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_net(inode, file, &sctp_assoc_ops, + sizeof(struct seq_net_private)); +} + +static const struct file_operations sctp_assocs_seq_fops = { + .open = sctp_assocs_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_net, +}; + +/* Set up the proc fs entry for 'assocs' object. */ +int __net_init sctp_assocs_proc_init(struct net *net) +{ + struct proc_dir_entry *p; + + p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp, + &sctp_assocs_seq_fops); + if (!p) + return -ENOMEM; + + return 0; +} + +/* Cleanup the proc fs entry for 'assocs' object. */ +void sctp_assocs_proc_exit(struct net *net) +{ + remove_proc_entry("assocs", net->sctp.proc_net_sctp); +} + +static void *sctp_remaddr_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, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " + "REM_ADDR_RTX START STATE\n"); + + return (void *)pos; +} + +static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos) +{ + if (++*pos >= sctp_assoc_hashsize) + return NULL; + + return pos; +} + +static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v) +{ +} + +static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) +{ + struct sctp_hashbucket *head; + struct sctp_ep_common *epb; + struct sctp_association *assoc; + struct sctp_transport *tsp; + int hash = *(loff_t *)v; + + if (hash >= sctp_assoc_hashsize) + return -ENOMEM; + + head = &sctp_assoc_hashtable[hash]; + local_bh_disable(); + read_lock(&head->lock); + rcu_read_lock(); + sctp_for_each_hentry(epb, &head->chain) { + if (!net_eq(sock_net(epb->sk), seq_file_net(seq))) + continue; + assoc = sctp_assoc(epb); + list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list, + transports) { + if (tsp->dead) + continue; + + /* + * The remote address (ADDR) + */ + tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); + seq_printf(seq, " "); + + /* + * The association ID (ASSOC_ID) + */ + seq_printf(seq, "%d ", tsp->asoc->assoc_id); + + /* + * If the Heartbeat is active (HB_ACT) + * Note: 1 = Active, 0 = Inactive + */ + seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer)); + + /* + * Retransmit time out (RTO) + */ + seq_printf(seq, "%lu ", tsp->rto); + + /* + * Maximum path retransmit count (PATH_MAX_RTX) + */ + seq_printf(seq, "%d ", tsp->pathmaxrxt); + + /* + * remote address retransmit count (REM_ADDR_RTX) + * Note: We don't have a way to tally this at the moment + * so lets just leave it as zero for the moment + */ + seq_puts(seq, "0 "); + + /* + * remote address start time (START). This is also not + * currently implemented, but we can record it with a + * jiffies marker in a subsequent patch + */ + seq_puts(seq, "0 "); + + /* + * The current state of this destination. I.e. + * SCTP_ACTIVE, SCTP_INACTIVE, ... + */ + seq_printf(seq, "%d", tsp->state); + + seq_printf(seq, "\n"); + } + } + + rcu_read_unlock(); + read_unlock(&head->lock); + local_bh_enable(); + + return 0; + +} + +static const struct seq_operations sctp_remaddr_ops = { + .start = sctp_remaddr_seq_start, + .next = sctp_remaddr_seq_next, + .stop = sctp_remaddr_seq_stop, + .show = sctp_remaddr_seq_show, +}; + +/* Cleanup the proc fs entry for 'remaddr' object. */ +void sctp_remaddr_proc_exit(struct net *net) +{ + remove_proc_entry("remaddr", net->sctp.proc_net_sctp); +} + +static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) +{ + return seq_open_net(inode, file, &sctp_remaddr_ops, + sizeof(struct seq_net_private)); +} + +static const struct file_operations sctp_remaddr_seq_fops = { + .open = sctp_remaddr_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_net, +}; + +int __net_init sctp_remaddr_proc_init(struct net *net) +{ + struct proc_dir_entry *p; + + p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp, + &sctp_remaddr_seq_fops); + if (!p) + return -ENOMEM; + return 0; +} |