IB/pack: IBoE UD packet packing support

Add support for packing IBoE packet headers.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>

[ Clean up and fix ib_ud_header_init() a bit.  - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 6a60827..bb1277c 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -1231,7 +1231,7 @@
 	for (i = 0; i < wr->num_sge; ++i)
 		send_size += wr->sg_list[i].length;
 
-	ib_ud_header_init(send_size, mlx4_ib_ah_grh_present(ah), 0, &sqp->ud_header);
+	ib_ud_header_init(send_size, 1, 0, mlx4_ib_ah_grh_present(ah), 0, &sqp->ud_header);
 
 	sqp->ud_header.lrh.service_level   =
 		be32_to_cpu(ah->av.sl_tclass_flowlabel) >> 28;