RDMA/cxgb4: Use ULP_MODE_TCPDDP

Set the ULP mode for initial RDMA connection setup to the proper DDP
mode.  This avoids wasting some HW resources while in streaming mode.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

drivers/infiniband/hw/cxgb4/cm.c

@@ -482,6 +482,7 @@ static int send_connect(struct c4iw_ep *ep)
 	       TX_CHAN(ep->tx_chan) |
 	       SMAC_SEL(ep->smac_idx) |
 	       DSCP(ep->tos) |
+	       ULP_MODE(ULP_MODE_TCPDDP) |
 	       RCV_BUFSIZ(rcv_win>>10);
 	opt2 = RX_CHANNEL(0) |
 	       RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid);
@@ -1274,6 +1275,7 @@ static void accept_cr(struct c4iw_ep *ep, __be32 peer_ip, struct sk_buff *skb,
 	       TX_CHAN(ep->tx_chan) |
 	       SMAC_SEL(ep->smac_idx) |
 	       DSCP(ep->tos) |
+	       ULP_MODE(ULP_MODE_TCPDDP) |
 	       RCV_BUFSIZ(rcv_win>>10);
 	opt2 = RX_CHANNEL(0) |
 	       RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid);