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Commit 5e99b139 authored by Noa Osherovich's avatar Noa Osherovich Committed by Doug Ledford
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IB/mlx4: Use correct SL on AH query under RoCE 



The mlx4 IB driver implementation for ib_query_ah used a wrong offset
(28 instead of 29) when link type is Ethernet. Fixed to use the correct one.

Fixes: fa417f7b ('IB/mlx4: Add support for IBoE')
Signed-off-by: default avatarShani Michaeli <shanim@mellanox.com>
Signed-off-by: default avatarNoa Osherovich <noaos@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 2b135db3

drivers/infiniband/hw/mlx4/ah.c

+5 −1
Original line number Diff line number Diff line
@@ -148,9 +148,13 @@ int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr) 
	enum rdma_link_layer ll;



	memset(ah_attr, 0, sizeof *ah_attr);

	ah_attr->sl = be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28;

	ah_attr->port_num = be32_to_cpu(ah->av.ib.port_pd) >> 24;

	ll = rdma_port_get_link_layer(ibah->device, ah_attr->port_num);

	if (ll == IB_LINK_LAYER_ETHERNET)

		ah_attr->sl = be32_to_cpu(ah->av.eth.sl_tclass_flowlabel) >> 29;

	else

		ah_attr->sl = be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28;



	ah_attr->dlid = ll == IB_LINK_LAYER_INFINIBAND ? be16_to_cpu(ah->av.ib.dlid) : 0;

	if (ah->av.ib.stat_rate)

		ah_attr->static_rate = ah->av.ib.stat_rate - MLX4_STAT_RATE_OFFSET;