tipc: Add socket options to get number of queued messages
This patch allows a TIPC application to determine the number of messages
currently waiting in a socket's receive queue (TIPC_SOCK_RECVQ_DEPTH) or
in all TIPC socket receive queues (TIPC_NODE_RECVQ_DEPTH).
Signed-off-by: Oscar Medina <oscar.medina@motorola.com>
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/tipc.h b/include/linux/tipc.h
index bea4694..3d92396 100644
--- a/include/linux/tipc.h
+++ b/include/linux/tipc.h
@@ -209,5 +209,7 @@
#define TIPC_SRC_DROPPABLE 128 /* Default: 0 (resend congested msg) */
#define TIPC_DEST_DROPPABLE 129 /* Default: based on socket type */
#define TIPC_CONN_TIMEOUT 130 /* Default: 8000 (ms) */
+#define TIPC_NODE_RECVQ_DEPTH 131 /* Default: none (read only) */
+#define TIPC_SOCK_RECVQ_DEPTH 132 /* Default: none (read only) */
#endif
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 1848693..e8254e8 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1748,6 +1748,12 @@
value = jiffies_to_msecs(sk->sk_rcvtimeo);
/* no need to set "res", since already 0 at this point */
break;
+ case TIPC_NODE_RECVQ_DEPTH:
+ value = (u32)atomic_read(&tipc_queue_size);
+ break;
+ case TIPC_SOCK_RECVQ_DEPTH:
+ value = skb_queue_len(&sk->sk_receive_queue);
+ break;
default:
res = -EINVAL;
}
