IB/mlx4: Check if GRH is available before using it
Before reading GRH attributes, need to make sure AH contains GRH,
and in addition, initialize GID type.
Fixes: dbf727de74
('IB/core: Use GID table in AH creation and dmac resolution')
Signed-off-by: Eran Ben Elisha <eranbe@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>
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@ -1764,14 +1764,14 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
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u8 port_num = mlx4_is_bonded(to_mdev(ibqp->device)->dev) ? 1 :
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attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
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union ib_gid gid;
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struct ib_gid_attr gid_attr;
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struct ib_gid_attr gid_attr = {.gid_type = IB_GID_TYPE_IB};
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u16 vlan = 0xffff;
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u8 smac[ETH_ALEN];
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int status = 0;
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int is_eth = rdma_cap_eth_ah(&dev->ib_dev, port_num) &&
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attr->ah_attr.ah_flags & IB_AH_GRH;
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if (is_eth) {
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if (is_eth && attr->ah_attr.ah_flags & IB_AH_GRH) {
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int index = attr->ah_attr.grh.sgid_index;
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status = ib_get_cached_gid(ibqp->device, port_num,
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