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>
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 0aba759..5dd8983 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -383,3 +383,144 @@
{
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);
+}