From 42e5425aa0dfd8a6cdd7e177cfd9703df05c7411 Mon Sep 17 00:00:00 2001 From: Tung Nguyen Date: Thu, 18 Apr 2019 21:02:19 +0700 Subject: 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 Acked-by: Jon Maloy Signed-off-by: David S. Miller --- include/uapi/linux/tipc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/tipc.h b/include/uapi/linux/tipc.h index 6b2fd4d9655f..7df026ea6aff 100644 --- a/include/uapi/linux/tipc.h +++ b/include/uapi/linux/tipc.h @@ -190,6 +190,7 @@ struct sockaddr_tipc { #define TIPC_MCAST_REPLICAST 134 /* Default: TIPC selects. No arg */ #define TIPC_GROUP_JOIN 135 /* Takes struct tipc_group_req* */ #define TIPC_GROUP_LEAVE 136 /* No argument */ +#define TIPC_SOCK_RECVQ_USED 137 /* Default: none (read only) */ /* * Flag values -- cgit