netdev - [PATCH 1/7 net-2.6.26] [TIPC]: Skip connection flow control in connectionless sockets

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Message-Id: <1208207794-2229-2-git-send-email-allan.stephens@windriver.com>
Date:	Mon, 14 Apr 2008 17:16:28 -0400
From:	Allan Stephens <allan.stephens@...driver.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, allan.stephens@...driver.com
Subject: [PATCH 1/7 net-2.6.26] [TIPC]: Skip connection flow control in connectionless sockets

This patch optimizes the receive path for SOCK_DGRAM and SOCK_RDM
messages by skipping over code that handles connection-based flow
control.

Signed-off-by: Allan Stephens <allan.stephens@...driver.com>
---
 net/tipc/socket.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index ca6f52f..91aa2dc 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -919,7 +919,8 @@ restart:
 	/* Consume received message (optional) */
 
 	if (likely(!(flags & MSG_PEEK))) {
-		if (unlikely(++tsock->p->conn_unacked >= TIPC_FLOW_CONTROL_WIN))
+		if ((sock->state != SS_READY) &&
+		    (++tsock->p->conn_unacked >= TIPC_FLOW_CONTROL_WIN))
 			tipc_acknowledge(tsock->p->ref, tsock->p->conn_unacked);
 		advance_queue(tsock);
 	}
-- 
1.5.3.2

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