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authorNeil Horman <nhorman@tuxdriver.com>2008-05-10 02:14:50 +0400
committerDavid S. Miller <davem@davemloft.net>2008-05-10 02:14:50 +0400
commit20c2c1fd6c842caf70dcb1d94b9d58861949fd3d (patch)
tree4bce7be751ae0d460b8c2be5a6454100c93f0697 /net/sctp/proc.c
parent88a0a948e752bb9b617a8c55417a9fd9b0257199 (diff)
downloadlinux-20c2c1fd6c842caf70dcb1d94b9d58861949fd3d.tar.xz
sctp: add sctp/remaddr table to complete RFC remote address table OID
Add support for RFC3873 remote address table OID. +--(5) sctpAssocRemAddrTable | | | |--(-) sctpAssocId (shared index) | | | +--(1) sctpAssocRemAddrType (index) . | . +--(2) sctpAssocRemAddr (index) . | +--(3) sctpAssocRemAddrActive | +--(4) sctpAssocRemAddrHBActive | +--(5) sctpAssocRemAddrRTO | +--(6) sctpAssocRemAddrMaxPathRtx | +--(7) sctpAssocRemAddrRtx | +--(8) sctpAssocRemAddrStartTime This patch places all the requsite data in /proc/net/sctp/remaddr. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/proc.c')
-rw-r--r--net/sctp/proc.c141
1 files changed, 141 insertions, 0 deletions
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 0aba759cb9b7..5dd89831eceb 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -383,3 +383,144 @@ void sctp_assocs_proc_exit(void)
{
remove_proc_entry("assocs", 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\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)
+{
+ return;
+}
+
+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 hlist_node *node;
+ struct sctp_transport *tsp;
+ 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);
+ list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
+ transports) {
+ /*
+ * 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_printf(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_printf(seq, "0");
+
+ seq_printf(seq, "\n");
+ }
+ }
+
+ read_unlock(&head->lock);
+ sctp_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(void)
+{
+ remove_proc_entry("remaddr", proc_net_sctp);
+}
+
+static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &sctp_remaddr_ops);
+}
+
+static const struct file_operations sctp_remaddr_seq_fops = {
+ .open = sctp_remaddr_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+int __init sctp_remaddr_proc_init(void)
+{
+ struct proc_dir_entry *p;
+
+ p = create_proc_entry("remaddr", S_IRUGO, proc_net_sctp);
+ if (!p)
+ return -ENOMEM;
+ p->proc_fops = &sctp_remaddr_seq_fops;
+
+ return 0;
+}
+
+void sctp_assoc_proc_exit(void)
+{
+ remove_proc_entry("remaddr", proc_net_sctp);
+}