From: Jim Mott <jim@mellanox.com>
Date: Tue, 23 Oct 2007 17:51:30 +0000 (-0700)
Subject: SDP bug646 - Do not send DisConn if there is only 1 credit
X-Git-Tag: v4.1.12-92~264^2~5^2~343
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9563c51c8b4a3c3e43e8263e943300aae1527398;p=users%2Fjedix%2Flinux-maple.git

SDP bug646 - Do not send DisConn if there is only 1 credit

Compliance with CA4-82:
  If one credit is available, an implementation shall only send SDP
messages that provide additional credits and also do not contain ULP
payload.

Signed-off-by: Jim Mott <jim@mellanox.com>
---

diff --git a/drivers/infiniband/ulp/sdp/sdp_bcopy.c b/drivers/infiniband/ulp/sdp/sdp_bcopy.c
index e8e4673bffab8..41ae38e0da8ce 100644
--- a/drivers/infiniband/ulp/sdp/sdp_bcopy.c
+++ b/drivers/infiniband/ulp/sdp/sdp_bcopy.c
@@ -492,7 +492,7 @@ void sdp_post_sends(struct sdp_sock *ssk, int nonagle)
 	if (unlikely((1 << ssk->isk.sk.sk_state) &
 			(TCPF_FIN_WAIT1 | TCPF_LAST_ACK)) &&
 		!ssk->isk.sk.sk_send_head &&
-		ssk->bufs) {
+		ssk->bufs > (ssk->remote_credits >= ssk->rx_head - ssk->rx_tail)) {
 		skb = sk_stream_alloc_skb(&ssk->isk.sk,
 					  sizeof(struct sdp_bsdh),
 					  GFP_KERNEL);