1 files changed, 33 insertions, 29 deletions

diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index c068add8838b..c34eebc7db65 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -76,10 +76,6 @@ enum {
 	MLX4_IB_LSO_HEADER_SPARE	= 128,
 };
 
-enum {
-	MLX4_IB_IBOE_ETHERTYPE		= 0x8915
-};
-
 struct mlx4_ib_sqp {
 	struct mlx4_ib_qp	qp;
 	int			pkey_index;
@@ -2424,11 +2420,31 @@ static u8 sl_to_vl(struct mlx4_ib_dev *dev, u8 sl, int port_num)
 	return vl;
 }
 
+static int fill_gid_by_hw_index(struct mlx4_ib_dev *ibdev, u8 port_num,
+				int index, union ib_gid *gid,
+				enum ib_gid_type *gid_type)
+{
+	struct mlx4_ib_iboe *iboe = &ibdev->iboe;
+	struct mlx4_port_gid_table *port_gid_table;
+	unsigned long flags;
+
+	port_gid_table = &iboe->gids[port_num - 1];
+	spin_lock_irqsave(&iboe->lock, flags);
+	memcpy(gid, &port_gid_table->gids[index].gid, sizeof(*gid));
+	*gid_type = port_gid_table->gids[index].gid_type;
+	spin_unlock_irqrestore(&iboe->lock, flags);
+	if (!memcmp(gid, &zgid, sizeof(*gid)))
+		return -ENOENT;
+
+	return 0;
+}
+
 #define MLX4_ROCEV2_QP1_SPORT 0xC000
 static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr,
 			    void *wqe, unsigned *mlx_seg_len)
 {
 	struct ib_device *ib_dev = sqp->qp.ibqp.device;
+	struct mlx4_ib_dev *ibdev = to_mdev(ib_dev);
 	struct mlx4_wqe_mlx_seg *mlx = wqe;
 	struct mlx4_wqe_ctrl_seg *ctrl = wqe;
 	struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx;
@@ -2454,8 +2470,7 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr,
 	is_eth = rdma_port_get_link_layer(sqp->qp.ibqp.device, sqp->qp.port) == IB_LINK_LAYER_ETHERNET;
 	is_grh = mlx4_ib_ah_grh_present(ah);
 	if (is_eth) {
-		struct ib_gid_attr gid_attr;
-
+		enum ib_gid_type gid_type;
 		if (mlx4_is_mfunc(to_mdev(ib_dev)->dev)) {
 			/* When multi-function is enabled, the ib_core gid
 			 * indexes don't necessarily match the hw ones, so
@@ -2466,18 +2481,11 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr,
 			if (err)
 				return err;
 		} else  {
-			err = ib_get_cached_gid(ib_dev,
-						be32_to_cpu(ah->av.ib.port_pd) >> 24,
-						ah->av.ib.gid_index, &sgid,
-						&gid_attr);
-			if (!err) {
-				if (gid_attr.ndev)
-					dev_put(gid_attr.ndev);
-				if (!memcmp(&sgid, &zgid, sizeof(sgid)))
-					err = -ENOENT;
-			}
+			err = fill_gid_by_hw_index(ibdev, sqp->qp.port,
+					    ah->av.ib.gid_index,
+					    &sgid, &gid_type);
 			if (!err) {
-				is_udp = gid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP;
+				is_udp = gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP;
 				if (is_udp) {
 					if (ipv6_addr_v4mapped((struct in6_addr *)&sgid))
 						ip_version = 4;
@@ -2588,7 +2596,7 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr,
 		u16 ether_type;
 		u16 pcp = (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 29) << 13;
 
-		ether_type = (!is_udp) ? MLX4_IB_IBOE_ETHERTYPE :
+		ether_type = (!is_udp) ? ETH_P_IBOE:
 			(ip_version == 4 ? ETH_P_IP : ETH_P_IPV6);
 
 		mlx->sched_prio = cpu_to_be16(pcp);
@@ -2955,21 +2963,17 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 
 		if (sqp->roce_v2_gsi) {
 			struct mlx4_ib_ah *ah = to_mah(ud_wr(wr)->ah);
-			struct ib_gid_attr gid_attr;
+			enum ib_gid_type gid_type;
 			union ib_gid gid;
 
-			if (!ib_get_cached_gid(ibqp->device,
-					       be32_to_cpu(ah->av.ib.port_pd) >> 24,
-					       ah->av.ib.gid_index, &gid,
-					       &gid_attr)) {
-				if (gid_attr.ndev)
-					dev_put(gid_attr.ndev);
-				qp = (gid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ?
-					to_mqp(sqp->roce_v2_gsi) : qp;
-			} else {
+			if (!fill_gid_by_hw_index(mdev, sqp->qp.port,
+					   ah->av.ib.gid_index,
+					   &gid, &gid_type))
+				qp = (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ?
+						to_mqp(sqp->roce_v2_gsi) : qp;
+			else
 				pr_err("Failed to get gid at index %d. RoCEv2 will not work properly\n",
 				       ah->av.ib.gid_index);
-			}
 		}
 	}