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authorTung Nguyen <tung.q.nguyen@dektech.com.au>2019-04-18 21:02:19 +0700
committerDavid S. Miller <davem@davemloft.net>2019-04-19 14:59:05 -0700
commit42e5425aa0dfd8a6cdd7e177cfd9703df05c7411 (patch)
tree39e900102d0b395f3759cb8d252ec84cfc4fb65e /net/tipc/socket.c
parenta26deec69fa4a1843f11f11e123b49ed0699ff00 (diff)
tipc: introduce new socket option TIPC_SOCK_RECVQ_USED
When using TIPC_SOCK_RECVQ_DEPTH for getsockopt(), it returns the number of buffers in receive socket buffer which is not so helpful for user space applications. This commit introduces the new option TIPC_SOCK_RECVQ_USED which returns the current allocated bytes of the receive socket buffer. This helps user space applications dimension its buffer usage to avoid buffer overload issue. Signed-off-by: Tung Nguyen <tung.q.nguyen@dektech.com.au> Acked-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/socket.c')
-rw-r--r--net/tipc/socket.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 8ac8ddf1e324..1385207a301f 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -3070,6 +3070,9 @@ static int tipc_getsockopt(struct socket *sock, int lvl, int opt,
case TIPC_SOCK_RECVQ_DEPTH:
value = skb_queue_len(&sk->sk_receive_queue);
break;
+ case TIPC_SOCK_RECVQ_USED:
+ value = sk_rmem_alloc_get(sk);
+ break;
case TIPC_GROUP_JOIN:
seq.type = 0;
if (tsk->group)