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/* 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 <lksctp-developers@lists.sourceforge.net>
*
* Or submit a bug report through the following website:
* http://www.sf.net/projects/lksctp
*
* Written or modified by:
* Sridhar Samudrala <sri@us.ibm.com>
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
*/
#include <linux/types.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <net/sctp/sctp.h>
static char *sctp_snmp_list[] = {
#define SCTP_SNMP_ENTRY(x) #x
SCTP_SNMP_ENTRY(SctpCurrEstab),
SCTP_SNMP_ENTRY(SctpActiveEstabs),
SCTP_SNMP_ENTRY(SctpPassiveEstabs),
SCTP_SNMP_ENTRY(SctpAborteds),
SCTP_SNMP_ENTRY(SctpShutdowns),
SCTP_SNMP_ENTRY(SctpOutOfBlues),
SCTP_SNMP_ENTRY(SctpChecksumErrors),
SCTP_SNMP_ENTRY(SctpOutCtrlChunks),
SCTP_SNMP_ENTRY(SctpOutOrderChunks),
SCTP_SNMP_ENTRY(SctpOutUnorderChunks),
SCTP_SNMP_ENTRY(SctpInCtrlChunks),
SCTP_SNMP_ENTRY(SctpInOrderChunks),
SCTP_SNMP_ENTRY(SctpInUnorderChunks),
SCTP_SNMP_ENTRY(SctpFragUsrMsgs),
SCTP_SNMP_ENTRY(SctpReasmUsrMsgs),
SCTP_SNMP_ENTRY(SctpOutSCTPPacks),
SCTP_SNMP_ENTRY(SctpInSCTPPacks),
#undef SCTP_SNMP_ENTRY
};
/* 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 (i = 0; i < NR_CPUS; i++) {
if (!cpu_possible(i))
continue;
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; i < sizeof(sctp_snmp_list) / sizeof(char *); i++)
seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i],
fold_field((void **)sctp_statistics, i));
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 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_sockaddr_entry *laddr;
union sctp_addr *addr;
struct sctp_af *af;
list_for_each(pos, &epb->bind_addr.address_list) {
laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
addr = (union sctp_addr *)&laddr->a;
af = sctp_get_af_specific(addr->sa.sa_family);
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;
struct sctp_af *af;
list_for_each(pos, &assoc->peer.transport_addr_list) {
transport = list_entry(pos, struct sctp_transport, transports);
addr = (union sctp_addr *)&transport->ipaddr;
af = sctp_get_af_specific(addr->sa.sa_family);
af->seq_dump_addr(seq, addr);
}
}
/* 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;
seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT LADDRS\n");
for (hash = 0; hash < sctp_ep_hashsize; hash++) {
head = &sctp_ep_hashtable[hash];
read_lock(&head->lock);
for (epb = head->chain; epb; epb = epb->next) {
ep = sctp_ep(epb);
sk = epb->sk;
seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d ", ep, sk,
sctp_sk(sk)->type, sk->sk_state, hash,
epb->bind_addr.port);
sctp_seq_dump_local_addrs(seq, epb);
seq_printf(seq, "\n");
}
read_unlock(&head->lock);
}
return 0;
}
/* Initialize the seq file operations for 'eps' object. */
static int sctp_eps_seq_open(struct inode *inode, struct file *file)
{
return single_open(file, sctp_eps_seq_show, NULL);
}
static struct file_operations sctp_eps_seq_fops = {
.open = sctp_eps_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_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);
}
/* 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;
seq_printf(seq, " ASSOC SOCK STY SST ST HBKT LPORT RPORT "
"LADDRS <-> RADDRS\n");
for (hash = 0; hash < sctp_assoc_hashsize; hash++) {
head = &sctp_assoc_hashtable[hash];
read_lock(&head->lock);
for (epb = head->chain; epb; epb = epb->next) {
assoc = sctp_assoc(epb);
sk = epb->sk;
seq_printf(seq,
"%8p %8p %-3d %-3d %-2d %-4d %-5d %-5d ",
assoc, sk, sctp_sk(sk)->type, sk->sk_state,
assoc->state, hash, epb->bind_addr.port,
assoc->peer.port);
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);
}
return 0;
}
/* Initialize the seq file operations for 'assocs' object. */
static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
{
return single_open(file, sctp_assocs_seq_show, NULL);
}
static struct file_operations sctp_assocs_seq_fops = {
.open = sctp_assocs_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_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);
}