[tipc-discussion] [PATCH v1 1/1] tipc: return allocated buffer when using TIPC_SOCK_RECVQ_DEPTH

[Tung N. <tun...@de...>]

When using TIPC_SOCK_RECVQ_DEPTH for getsockopt(), it returns the
number of buffer elements in receive socket buffer which is not so
helpful for user applications.

By returning the current number of allocated bytes of the receive
socket buffer, applications can dimension its buffer usage to avoid
buffer overload issue.

Signed-off-by: Tung Nguyen <tun...@de...>
---
 net/tipc/socket.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index b542f14ed444..43a60a808493 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -3062,7 +3062,7 @@ static int tipc_getsockopt(struct socket *sock, int lvl, int opt,
 		value = 0; /* was tipc_queue_size, now obsolete */
 		break;
 	case TIPC_SOCK_RECVQ_DEPTH:
-		value = skb_queue_len(&sk->sk_receive_queue);
+		value = sk_rmem_alloc_get(sk);
 		break;
 	case TIPC_GROUP_JOIN:
 		seq.type = 0;
-- 
2.17.1