sdp: BUG1727 - there is no point of using zcopy when credits are not available.

if credits are not available, data won't be transferred anyway,
so it would be better to use bcopy.

Signed-off-by: Eldad Zinger <eldadz@mellanox.co.il>

diff --git a/drivers/infiniband/ulp/sdp/sdp_main.c b/drivers/infiniband/ulp/sdp/sdp_main.c
index df7e70600e70a6be2b0eb841ca69a59c664fe23e..74d6f0ef31469895667250625318fde430b7eba8 100644 (file)
--- a/drivers/infiniband/ulp/sdp/sdp_main.c
+++ b/drivers/infiniband/ulp/sdp/sdp_main.c
@@ -1845,7 +1845,7 @@ static int sdp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                SDPSTATS_HIST(sendmsg_seglen, seglen);
 
                if (sdp_zcopy_thresh && seglen > sdp_zcopy_thresh &&
-                               seglen > SDP_MIN_ZCOPY_THRESH) {
+                               seglen > SDP_MIN_ZCOPY_THRESH && tx_slots_free(ssk)) {
                        int zcopied = 0;
 
                        zcopied = sdp_sendmsg_zcopy(iocb, sk, iov);