cxgb3: sge setup fixes

Enable timestamps, update delayed ack threshold for iSCSI/iWARP traffic
Remove the len flag in Tx requests. It might corrupt offload trace packets.
Update SGE context setup to avoid potential H/W misprogrammation.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index fcd1a4f..54667f0 100755
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -1089,7 +1089,7 @@
 	struct tx_desc *d = &q->desc[pidx];
 	struct cpl_tx_pkt *cpl = (struct cpl_tx_pkt *)d;
 
-	cpl->len = htonl(skb->len | 0x80000000);
+	cpl->len = htonl(skb->len);
 	cntrl = V_TXPKT_INTF(pi->port_id);
 
 	if (vlan_tx_tag_present(skb) && pi->vlan_grp)