IB/mlx4: Set traffic class in AH

Set traffic class within sl_tclass_flowlabel when create iboe AH.
Without this the TOS value will be empty when running VLAN tagged
traffic, because the TOS value is taken from the traffic class in the
address handle attributes.

Fixes: 9106c4106974 ('IB/mlx4: Fix SL to 802.1Q priority-bits mapping for IBoE')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/mlx4/ah.c b/drivers/infiniband/hw/mlx4/ah.c
index 5fc62336273132a80eebe1e8f3045758edd12d72..6be7dc320ff72defaf2f6619527908b66c7f7a4e 100644 (file)
--- a/drivers/infiniband/hw/mlx4/ah.c
+++ b/drivers/infiniband/hw/mlx4/ah.c
@@ -111,7 +111,9 @@ static struct ib_ah *create_iboe_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr
                       !(1 << ah->av.eth.stat_rate & dev->caps.stat_rate_support))
                        --ah->av.eth.stat_rate;
        }
-
+       ah->av.eth.sl_tclass_flowlabel |=
+                       cpu_to_be32((ah_attr->grh.traffic_class << 20) |
+                                   ah_attr->grh.flow_label);
        /*
         * HW requires multicast LID so we just choose one.
         */
@@ -119,7 +121,7 @@ static struct ib_ah *create_iboe_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr
                ah->av.ib.dlid = cpu_to_be16(0xc000);
 
        memcpy(ah->av.eth.dgid, ah_attr->grh.dgid.raw, 16);
-       ah->av.eth.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 29);
+       ah->av.eth.sl_tclass_flowlabel |= cpu_to_be32(ah_attr->sl << 29);
 
        return &ah->ibah;
 }