1 files changed, 288 insertions, 0 deletions
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
new file mode 100644
index 000000000000..e42fd8c2916b
--- /dev/null
+++ b/net/sctp/proc.c
@@ -0,0 +1,288 @@
+/* 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 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),
+};
+
+/* 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; 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 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);
+}