RDMA: Convert drivers to use sgid_attr instead of sgid_index

The core code now ensures that all driver callbacks that receive an
rdma_ah_attrs will have a sgid_attr's pointer if there is a GRH present.

Drivers can use this pointer instead of calling a query function with
sgid_index. This simplifies the drivers and also avoids races where a
gid_index lookup may return different data if it is changed.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

drivers/infiniband/hw/bnxt_re/ib_verbs.c

@@ -672,8 +672,6 @@ struct ib_ah *bnxt_re_create_ah(struct ib_pd *ib_pd,
 	int rc;
 	u8 nw_type;
 
-	struct ib_gid_attr sgid_attr;
-
 	if (!(rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH)) {
 		dev_err(rdev_to_dev(rdev), "Failed to alloc AH: GRH not set");
 		return ERR_PTR(-EINVAL);
@@ -704,20 +702,11 @@ struct ib_ah *bnxt_re_create_ah(struct ib_pd *ib_pd,
 				    grh->dgid.raw) &&
 	    !rdma_link_local_addr((struct in6_addr *)
 				  grh->dgid.raw)) {
-		union ib_gid sgid;
+		const struct ib_gid_attr *sgid_attr;
 
-		rc = ib_get_cached_gid(&rdev->ibdev, 1,
-				       grh->sgid_index, &sgid,
-				       &sgid_attr);
-		if (rc) {
-			dev_err(rdev_to_dev(rdev),
-				"Failed to query gid at index %d",
-				grh->sgid_index);
-			goto fail;
-		}
-		dev_put(sgid_attr.ndev);
+		sgid_attr = grh->sgid_attr;
 		/* Get network header type for this GID */
-		nw_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);
+		nw_type = rdma_gid_attr_network_type(sgid_attr);
 		switch (nw_type) {
 		case RDMA_NETWORK_IPV4:
 			ah->qplib_ah.nw_type = CMDQ_CREATE_AH_TYPE_V2IPV4;
@@ -1598,9 +1587,6 @@ int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr,
 	struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
 	enum ib_qp_state curr_qp_state, new_qp_state;
 	int rc, entries;
-	int status;
-	union ib_gid sgid;
-	struct ib_gid_attr sgid_attr;
 	unsigned int flags;
 	u8 nw_type;
 
@@ -1667,6 +1653,7 @@ int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr,
 	if (qp_attr_mask & IB_QP_AV) {
 		const struct ib_global_route *grh =
 			rdma_ah_read_grh(&qp_attr->ah_attr);
+		const struct ib_gid_attr *sgid_attr;
 
 		qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
 				     CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
@@ -1690,15 +1677,10 @@ int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr,
 		ether_addr_copy(qp->qplib_qp.ah.dmac,
 				qp_attr->ah_attr.roce.dmac);
 
-		status = ib_get_cached_gid(&rdev->ibdev, 1,
-					   grh->sgid_index,
-					   &sgid, &sgid_attr);
-		if (!status) {
-			memcpy(qp->qplib_qp.smac, sgid_attr.ndev->dev_addr,
+		sgid_attr = qp_attr->ah_attr.grh.sgid_attr;
+		memcpy(qp->qplib_qp.smac, sgid_attr->ndev->dev_addr,
 		       ETH_ALEN);
-			dev_put(sgid_attr.ndev);
-			nw_type = ib_gid_to_network_type(sgid_attr.gid_type,
-							 &sgid);
+		nw_type = rdma_gid_attr_network_type(sgid_attr);
 		switch (nw_type) {
 		case RDMA_NETWORK_IPV4:
 			qp->qplib_qp.nw_type =
@@ -1714,7 +1696,6 @@ int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr,
 			break;
 		}
 	}
-	}
 
 	if (qp_attr_mask & IB_QP_PATH_MTU) {
 		qp->qplib_qp.modify_flags |=
@@ -1934,7 +1915,7 @@ static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp,
 		dev_put(sgid_attr.ndev);
 	}
 	/* Get network header type for this GID */
-	nw_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);
+	nw_type = rdma_gid_attr_network_type(&sgid_attr);
 	switch (nw_type) {
 	case RDMA_NETWORK_IPV4:
 		nw_type = BNXT_RE_ROCEV2_IPV4_PACKET;

drivers/infiniband/hw/hns/hns_roce_ah.c

@@ -44,13 +44,11 @@ struct ib_ah *hns_roce_create_ah(struct ib_pd *ibpd,
 				 struct ib_udata *udata)
 {
 	struct hns_roce_dev *hr_dev = to_hr_dev(ibpd->device);
+	const struct ib_gid_attr *gid_attr;
 	struct device *dev = hr_dev->dev;
-	struct ib_gid_attr gid_attr;
 	struct hns_roce_ah *ah;
 	u16 vlan_tag = 0xffff;
 	const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
-	union ib_gid sgid;
-	int ret;
 
 	ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
 	if (!ah)
@@ -59,18 +57,9 @@ struct ib_ah *hns_roce_create_ah(struct ib_pd *ibpd,
 	/* Get mac address */
 	memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
 
-	/* Get source gid */
-	ret = ib_get_cached_gid(ibpd->device, rdma_ah_get_port_num(ah_attr),
-				grh->sgid_index, &sgid, &gid_attr);
-	if (ret) {
-		dev_err(dev, "get sgid failed! ret = %d\n", ret);
-		kfree(ah);
-		return ERR_PTR(ret);
-	}
-
-	if (is_vlan_dev(gid_attr.ndev))
-		vlan_tag = vlan_dev_vlan_id(gid_attr.ndev);
-	dev_put(gid_attr.ndev);
+	gid_attr = ah_attr->grh.sgid_attr;
+	if (is_vlan_dev(gid_attr->ndev))
+		vlan_tag = vlan_dev_vlan_id(gid_attr->ndev);
 
 	if (vlan_tag < 0x1000)
 		vlan_tag |= (rdma_ah_get_sl(ah_attr) &

drivers/infiniband/hw/mlx4/ah.c

@@ -82,12 +82,11 @@ static struct ib_ah *create_iboe_ah(struct ib_pd *pd,
 				    struct mlx4_ib_ah *ah)
 {
 	struct mlx4_ib_dev *ibdev = to_mdev(pd->device);
+	const struct ib_gid_attr *gid_attr;
 	struct mlx4_dev *dev = ibdev->dev;
 	int is_mcast = 0;
 	struct in6_addr in6;
 	u16 vlan_tag = 0xffff;
-	union ib_gid sgid;
-	struct ib_gid_attr gid_attr;
 	const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
 	int ret;
 
@@ -96,15 +95,12 @@ static struct ib_ah *create_iboe_ah(struct ib_pd *pd,
 		is_mcast = 1;
 
 	memcpy(ah->av.eth.mac, ah_attr->roce.dmac, ETH_ALEN);
-	ret = ib_get_cached_gid(pd->device, rdma_ah_get_port_num(ah_attr),
-				grh->sgid_index, &sgid, &gid_attr);
-	if (ret)
-		return ERR_PTR(ret);
 	eth_zero_addr(ah->av.eth.s_mac);
-	if (is_vlan_dev(gid_attr.ndev))
-		vlan_tag = vlan_dev_vlan_id(gid_attr.ndev);
-	memcpy(ah->av.eth.s_mac, gid_attr.ndev->dev_addr, ETH_ALEN);
-	dev_put(gid_attr.ndev);
+	gid_attr = ah_attr->grh.sgid_attr;
+	if (is_vlan_dev(gid_attr->ndev))
+		vlan_tag = vlan_dev_vlan_id(gid_attr->ndev);
+	memcpy(ah->av.eth.s_mac, gid_attr->ndev->dev_addr, ETH_ALEN);
+
 	if (vlan_tag < 0x1000)
 		vlan_tag |= (rdma_ah_get_sl(ah_attr) & 7) << 13;
 	ah->av.eth.port_pd = cpu_to_be32(to_mpd(pd)->pdn |

drivers/infiniband/hw/mlx4/qp.c

@@ -2176,6 +2176,7 @@ static int __mlx4_ib_modify_qp(void *src, enum mlx4_ib_source_type src_type,
 {
 	struct ib_uobject *ibuobject;
 	struct ib_srq  *ibsrq;
+	const struct ib_gid_attr *gid_attr = NULL;
 	struct ib_rwq_ind_table *rwq_ind_tbl;
 	enum ib_qp_type qp_type;
 	struct mlx4_ib_dev *dev;
@@ -2356,29 +2357,17 @@ static int __mlx4_ib_modify_qp(void *src, enum mlx4_ib_source_type src_type,
 	if (attr_mask & IB_QP_AV) {
 		u8 port_num = mlx4_is_bonded(dev->dev) ? 1 :
 			attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
-		union ib_gid gid;
-		struct ib_gid_attr gid_attr = {.gid_type = IB_GID_TYPE_IB};
 		u16 vlan = 0xffff;
 		u8 smac[ETH_ALEN];
-		int status = 0;
 		int is_eth =
 			rdma_cap_eth_ah(&dev->ib_dev, port_num) &&
 			rdma_ah_get_ah_flags(&attr->ah_attr) & IB_AH_GRH;
 
 		if (is_eth) {
-			int index =
-				rdma_ah_read_grh(&attr->ah_attr)->sgid_index;
-
-			status = ib_get_cached_gid(&dev->ib_dev, port_num,
-						   index, &gid, &gid_attr);
-			if (!status) {
-				vlan = rdma_vlan_dev_vlan_id(gid_attr.ndev);
-				memcpy(smac, gid_attr.ndev->dev_addr, ETH_ALEN);
-				dev_put(gid_attr.ndev);
-			}
+			gid_attr = attr->ah_attr.grh.sgid_attr;
+			vlan = rdma_vlan_dev_vlan_id(gid_attr->ndev);
+			memcpy(smac, gid_attr->ndev->dev_addr, ETH_ALEN);
 		}
-		if (status)
-			goto out;
 
 		if (mlx4_set_path(dev, attr, attr_mask, qp, &context->pri_path,
 				  port_num, vlan, smac))
@@ -2389,7 +2378,7 @@ static int __mlx4_ib_modify_qp(void *src, enum mlx4_ib_source_type src_type,
 
 		if (is_eth &&
 		    (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR)) {
-			u8 qpc_roce_mode = gid_type_to_qpc(gid_attr.gid_type);
+			u8 qpc_roce_mode = gid_type_to_qpc(gid_attr->gid_type);
 
 			if (qpc_roce_mode == MLX4_QPC_ROCE_MODE_UNDEFINED) {
 				err = -EINVAL;
@@ -3181,10 +3170,12 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr,
 					to_mdev(ib_dev)->sriov.demux[sqp->qp.port - 1].
 						       guid_cache[ah->av.ib.gid_index];
 			} else {
-				ib_get_cached_gid(ib_dev,
+				err = rdma_query_gid(ib_dev,
 					be32_to_cpu(ah->av.ib.port_pd) >> 24,
 					ah->av.ib.gid_index,
-						  &sqp->ud_header.grh.source_gid, NULL);
+					&sqp->ud_header.grh.source_gid);
+				if (err)
+					return err;
 			}
 		}
 		memcpy(sqp->ud_header.grh.destination_gid.raw,

drivers/infiniband/hw/mlx5/ah.c

@@ -37,7 +37,6 @@ static struct ib_ah *create_ib_ah(struct mlx5_ib_dev *dev,
 				  struct rdma_ah_attr *ah_attr)
 {
 	enum ib_gid_type gid_type;
-	int err;
 
 	if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) {
 		const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
@@ -53,18 +52,12 @@ static struct ib_ah *create_ib_ah(struct mlx5_ib_dev *dev,
 	ah->av.stat_rate_sl = (rdma_ah_get_static_rate(ah_attr) << 4);
 
 	if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) {
-		err = mlx5_get_roce_gid_type(dev, ah_attr->port_num,
-					     ah_attr->grh.sgid_index,
-					     &gid_type);
-		if (err)
-			return ERR_PTR(err);
+		gid_type = ah_attr->grh.sgid_attr->gid_type;
 
 		memcpy(ah->av.rmac, ah_attr->roce.dmac,
 		       sizeof(ah_attr->roce.dmac));
 		ah->av.udp_sport =
-		mlx5_get_roce_udp_sport(dev,
-					rdma_ah_get_port_num(ah_attr),
-					rdma_ah_read_grh(ah_attr)->sgid_index);
+			mlx5_get_roce_udp_sport(dev, ah_attr->grh.sgid_attr);
 		ah->av.stat_rate_sl |= (rdma_ah_get_sl(ah_attr) & 0x7) << 1;
 		if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
 #define MLX5_ECN_ENABLED BIT(1)

drivers/infiniband/hw/mlx5/main.c

@@ -524,41 +524,15 @@ static int mlx5_ib_del_gid(const struct ib_gid_attr *attr,
 			     attr->index, NULL, NULL);
 }
 
-__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num,
-			       int index)
+__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev,
+			       const struct ib_gid_attr *attr)
 {
-	struct ib_gid_attr attr;
-	union ib_gid gid;
-
-	if (ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr))
-		return 0;
-
-	dev_put(attr.ndev);
-
-	if (attr.gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
+	if (attr->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
 		return 0;
 
 	return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port));
 }
 
-int mlx5_get_roce_gid_type(struct mlx5_ib_dev *dev, u8 port_num,
-			   int index, enum ib_gid_type *gid_type)
-{
-	struct ib_gid_attr attr;
-	union ib_gid gid;
-	int ret;
-
-	ret = ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr);
-	if (ret)
-		return ret;
-
-	dev_put(attr.ndev);
-
-	*gid_type = attr.gid_type;
-
-	return 0;
-}
-
 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
 {
 	if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB)

drivers/infiniband/hw/mlx5/mlx5_ib.h

@@ -1183,10 +1183,8 @@ int mlx5_ib_get_vf_stats(struct ib_device *device, int vf,
 int mlx5_ib_set_vf_guid(struct ib_device *device, int vf, u8 port,
 			u64 guid, int type);
 
-__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num,
-			       int index);
-int mlx5_get_roce_gid_type(struct mlx5_ib_dev *dev, u8 port_num,
-			   int index, enum ib_gid_type *gid_type);
+__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev,
+			       const struct ib_gid_attr *attr);
 
 void mlx5_ib_cleanup_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);
 int mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);

drivers/infiniband/hw/mlx5/qp.c

@@ -2555,18 +2555,16 @@ static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
 	if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) {
 		if (!(ah_flags & IB_AH_GRH))
 			return -EINVAL;
-		err = mlx5_get_roce_gid_type(dev, port, grh->sgid_index,
-					     &gid_type);
-		if (err)
-			return err;
+
 		memcpy(path->rmac, ah->roce.dmac, sizeof(ah->roce.dmac));
 		if (qp->ibqp.qp_type == IB_QPT_RC ||
 		    qp->ibqp.qp_type == IB_QPT_UC ||
 		    qp->ibqp.qp_type == IB_QPT_XRC_INI ||
 		    qp->ibqp.qp_type == IB_QPT_XRC_TGT)
-			path->udp_sport = mlx5_get_roce_udp_sport(dev, port,
-								  grh->sgid_index);
+			path->udp_sport =
+				mlx5_get_roce_udp_sport(dev, ah->grh.sgid_attr);
 		path->dci_cfi_prio_sl = (sl & 0x7) << 4;
+		gid_type = ah->grh.sgid_attr->gid_type;
 		if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
 			path->ecn_dscp = (grh->traffic_class >> 2) & 0x3f;
 	} else {

drivers/infiniband/hw/ocrdma/ocrdma_ah.c

@@ -71,7 +71,7 @@ static u16 ocrdma_hdr_type_to_proto_num(int devid, u8 hdr_type)
 }
 
 static inline int set_av_attr(struct ocrdma_dev *dev, struct ocrdma_ah *ah,
-			struct rdma_ah_attr *attr, union ib_gid *sgid,
+			struct rdma_ah_attr *attr, const union ib_gid *sgid,
 			int pdid, bool *isvlan, u16 vlan_tag)
 {
 	int status;
@@ -164,11 +164,10 @@ struct ib_ah *ocrdma_create_ah(struct ib_pd *ibpd, struct rdma_ah_attr *attr,
 	struct ocrdma_ah *ah;
 	bool isvlan = false;
 	u16 vlan_tag = 0xffff;
-	struct ib_gid_attr sgid_attr;
+	const struct ib_gid_attr *sgid_attr;
 	struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
 	struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
 	const struct ib_global_route *grh;
-	union ib_gid sgid;
 
 	if ((attr->type != RDMA_AH_ATTR_TYPE_ROCE) ||
 	    !(rdma_ah_get_ah_flags(attr) & IB_AH_GRH))
@@ -186,20 +185,15 @@ struct ib_ah *ocrdma_create_ah(struct ib_pd *ibpd, struct rdma_ah_attr *attr,
 	if (status)
 		goto av_err;
 
-	status = ib_get_cached_gid(&dev->ibdev, 1, grh->sgid_index, &sgid,
-				   &sgid_attr);
-	if (status) {
-		pr_err("%s(): Failed to query sgid, status = %d\n",
-		      __func__, status);
-		goto av_conf_err;
-	}
-	if (is_vlan_dev(sgid_attr.ndev))
-		vlan_tag = vlan_dev_vlan_id(sgid_attr.ndev);
-	dev_put(sgid_attr.ndev);
+	sgid_attr = attr->grh.sgid_attr;
+	if (is_vlan_dev(sgid_attr->ndev))
+		vlan_tag = vlan_dev_vlan_id(sgid_attr->ndev);
+
 	/* Get network header type for this GID */
-	ah->hdr_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);
+	ah->hdr_type = rdma_gid_attr_network_type(sgid_attr);
 
-	status = set_av_attr(dev, ah, attr, &sgid, pd->id, &isvlan, vlan_tag);
+	status = set_av_attr(dev, ah, attr, &sgid_attr->gid, pd->id,
+			     &isvlan, vlan_tag);
 	if (status)
 		goto av_conf_err;
 

drivers/infiniband/hw/ocrdma/ocrdma_hw.c

@@ -2494,8 +2494,7 @@ static int ocrdma_set_av_params(struct ocrdma_qp *qp,
 {
 	int status;
 	struct rdma_ah_attr *ah_attr = &attrs->ah_attr;
-	union ib_gid sgid;
-	struct ib_gid_attr sgid_attr;
+	const struct ib_gid_attr *sgid_attr;
 	u32 vlan_id = 0xFFFF;
 	u8 mac_addr[6], hdr_type;
 	union {
@@ -2525,25 +2524,23 @@ static int ocrdma_set_av_params(struct ocrdma_qp *qp,
 	memcpy(&cmd->params.dgid[0], &grh->dgid.raw[0],
 	       sizeof(cmd->params.dgid));
 
-	status = ib_get_cached_gid(&dev->ibdev, 1, grh->sgid_index,
-				   &sgid, &sgid_attr);
-	if (!status) {
-		vlan_id = rdma_vlan_dev_vlan_id(sgid_attr.ndev);
-		memcpy(mac_addr, sgid_attr.ndev->dev_addr, ETH_ALEN);
-		dev_put(sgid_attr.ndev);
-	}
+	sgid_attr = ah_attr->grh.sgid_attr;
+	vlan_id = rdma_vlan_dev_vlan_id(sgid_attr->ndev);
+	memcpy(mac_addr, sgid_attr->ndev->dev_addr, ETH_ALEN);
 
 	qp->sgid_idx = grh->sgid_index;
-	memcpy(&cmd->params.sgid[0], &sgid.raw[0], sizeof(cmd->params.sgid));
+	memcpy(&cmd->params.sgid[0], &sgid_attr->gid.raw[0],
+	       sizeof(cmd->params.sgid));
 	status = ocrdma_resolve_dmac(dev, ah_attr, &mac_addr[0]);
 	if (status)
 		return status;
+
 	cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) |
 				(mac_addr[2] << 16) | (mac_addr[3] << 24);
 
-	hdr_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);
+	hdr_type = rdma_gid_attr_network_type(sgid_attr);
 	if (hdr_type == RDMA_NETWORK_IPV4) {
-		rdma_gid2ip(&sgid_addr._sockaddr, &sgid);
+		rdma_gid2ip(&sgid_addr._sockaddr, &sgid_attr->gid);
 		rdma_gid2ip(&dgid_addr._sockaddr, &grh->dgid);
 		memcpy(&cmd->params.dgid[0],
 		       &dgid_addr._sockaddr_in.sin_addr.s_addr, 4);

drivers/infiniband/hw/qedr/verbs.c

@@ -1075,27 +1075,19 @@ static inline int get_gid_info_from_table(struct ib_qp *ibqp,
 					  struct qed_rdma_modify_qp_in_params
 					  *qp_params)
 {
+	const struct ib_gid_attr *gid_attr;
 	enum rdma_network_type nw_type;
-	struct ib_gid_attr gid_attr;
 	const struct ib_global_route *grh = rdma_ah_read_grh(&attr->ah_attr);
-	union ib_gid gid;
 	u32 ipv4_addr;
-	int rc = 0;
 	int i;
 
-	rc = ib_get_cached_gid(ibqp->device,
-			       rdma_ah_get_port_num(&attr->ah_attr),
-			       grh->sgid_index, &gid, &gid_attr);
-	if (rc)
-		return rc;
-
-	qp_params->vlan_id = rdma_vlan_dev_vlan_id(gid_attr.ndev);
+	gid_attr = grh->sgid_attr;
+	qp_params->vlan_id = rdma_vlan_dev_vlan_id(gid_attr->ndev);
 
-	dev_put(gid_attr.ndev);
-	nw_type = ib_gid_to_network_type(gid_attr.gid_type, &gid);
+	nw_type = rdma_gid_attr_network_type(gid_attr);
 	switch (nw_type) {
 	case RDMA_NETWORK_IPV6:
-		memcpy(&qp_params->sgid.bytes[0], &gid.raw[0],
+		memcpy(&qp_params->sgid.bytes[0], &gid_attr->gid.raw[0],
 		       sizeof(qp_params->sgid));
 		memcpy(&qp_params->dgid.bytes[0],
 		       &grh->dgid,
@@ -1105,7 +1097,7 @@ static inline int get_gid_info_from_table(struct ib_qp *ibqp,
 			  QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1);
 		break;
 	case RDMA_NETWORK_IB:
-		memcpy(&qp_params->sgid.bytes[0], &gid.raw[0],
+		memcpy(&qp_params->sgid.bytes[0], &gid_attr->gid.raw[0],
 		       sizeof(qp_params->sgid));
 		memcpy(&qp_params->dgid.bytes[0],
 		       &grh->dgid,
@@ -1115,7 +1107,7 @@ static inline int get_gid_info_from_table(struct ib_qp *ibqp,
 	case RDMA_NETWORK_IPV4:
 		memset(&qp_params->sgid, 0, sizeof(qp_params->sgid));
 		memset(&qp_params->dgid, 0, sizeof(qp_params->dgid));
-		ipv4_addr = qedr_get_ipv4_from_gid(gid.raw);
+		ipv4_addr = qedr_get_ipv4_from_gid(gid_attr->gid.raw);
 		qp_params->sgid.ipv4_addr = ipv4_addr;
 		ipv4_addr =
 		    qedr_get_ipv4_from_gid(grh->dgid.raw);

drivers/infiniband/sw/rxe/rxe_av.c

@@ -82,15 +82,14 @@ void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr)
 	rdma_ah_set_port_num(attr, av->port_num);
 }
 
-void rxe_av_fill_ip_info(struct rxe_av *av,
-			struct rdma_ah_attr *attr,
-			struct ib_gid_attr *sgid_attr,
-			union ib_gid *sgid)
+void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr)
 {
-	rdma_gid2ip((struct sockaddr *)&av->sgid_addr, sgid);
+	const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr;
+
+	rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
 	rdma_gid2ip((struct sockaddr *)&av->dgid_addr,
 		    &rdma_ah_read_grh(attr)->dgid);
-	av->network_type = ib_gid_to_network_type(sgid_attr->gid_type, sgid);
+	av->network_type = rdma_gid_attr_network_type(sgid_attr);
 }
 
 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt)

drivers/infiniband/sw/rxe/rxe_loc.h

@@ -43,10 +43,7 @@ void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
 
 void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr);
 
-void rxe_av_fill_ip_info(struct rxe_av *av,
-			struct rdma_ah_attr *attr,
-			struct ib_gid_attr *sgid_attr,
-			union ib_gid *sgid);
+void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr);
 
 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt);
 

drivers/infiniband/sw/rxe/rxe_qp.c

@@ -580,9 +580,6 @@ int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
 		     struct ib_udata *udata)
 {
 	int err;
-	struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
-	union ib_gid sgid;
-	struct ib_gid_attr sgid_attr;
 
 	if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
 		int max_rd_atomic = __roundup_pow_of_two(attr->max_rd_atomic);
@@ -623,30 +620,14 @@ int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
 		qp->attr.qkey = attr->qkey;
 
 	if (mask & IB_QP_AV) {
-		ib_get_cached_gid(&rxe->ib_dev, 1,
-				  rdma_ah_read_grh(&attr->ah_attr)->sgid_index,
-				  &sgid, &sgid_attr);
 		rxe_av_from_attr(attr->port_num, &qp->pri_av, &attr->ah_attr);
-		rxe_av_fill_ip_info(&qp->pri_av, &attr->ah_attr,
-				    &sgid_attr, &sgid);
-		if (sgid_attr.ndev)
-			dev_put(sgid_attr.ndev);
+		rxe_av_fill_ip_info(&qp->pri_av, &attr->ah_attr);
 	}
 
 	if (mask & IB_QP_ALT_PATH) {
-		u8 sgid_index =
-			rdma_ah_read_grh(&attr->alt_ah_attr)->sgid_index;
-
-		ib_get_cached_gid(&rxe->ib_dev, 1, sgid_index,
-				  &sgid, &sgid_attr);
-
 		rxe_av_from_attr(attr->alt_port_num, &qp->alt_av,
 				 &attr->alt_ah_attr);
-		rxe_av_fill_ip_info(&qp->alt_av, &attr->alt_ah_attr,
-				    &sgid_attr, &sgid);
-		if (sgid_attr.ndev)
-			dev_put(sgid_attr.ndev);
-
+		rxe_av_fill_ip_info(&qp->alt_av, &attr->alt_ah_attr);
 		qp->attr.alt_port_num = attr->alt_port_num;
 		qp->attr.alt_pkey_index = attr->alt_pkey_index;
 		qp->attr.alt_timeout = attr->alt_timeout;

drivers/infiniband/sw/rxe/rxe_verbs.c

@@ -222,25 +222,11 @@ static int rxe_dealloc_pd(struct ib_pd *ibpd)
 	return 0;
 }
 
-static int rxe_init_av(struct rxe_dev *rxe, struct rdma_ah_attr *attr,
+static void rxe_init_av(struct rxe_dev *rxe, struct rdma_ah_attr *attr,
 			struct rxe_av *av)
 {
-	int err;
-	union ib_gid sgid;
-	struct ib_gid_attr sgid_attr;
-
-	err = ib_get_cached_gid(&rxe->ib_dev, rdma_ah_get_port_num(attr),
-				rdma_ah_read_grh(attr)->sgid_index, &sgid,
-				&sgid_attr);
-	if (err) {
-		pr_err("Failed to query sgid. err = %d\n", err);
-		return err;
-	}
-
 	rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr);
-	rxe_av_fill_ip_info(av, attr, &sgid_attr, &sgid);
-	dev_put(sgid_attr.ndev);
-	return 0;
+	rxe_av_fill_ip_info(av, attr);
 }
 
 static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd,
@@ -266,13 +252,9 @@ static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd,
 	rxe_add_ref(pd);
 	ah->pd = pd;
 
-	err = rxe_init_av(rxe, attr, &ah->av);
-	if (err)
-		goto err2;
-
+	rxe_init_av(rxe, attr, &ah->av);
 	return &ah->ibah;
 
-err2:
 	rxe_drop_ref(pd);
 	rxe_drop_ref(ah);
 err1:
@@ -289,10 +271,7 @@ static int rxe_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr)
 	if (err)
 		return err;
 
-	err = rxe_init_av(rxe, attr, &ah->av);
-	if (err)
-		return err;
-
+	rxe_init_av(rxe, attr, &ah->av);
 	return 0;
 }
 

include/rdma/ib_verbs.h

@@ -149,13 +149,13 @@ static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type net
 	return IB_GID_TYPE_IB;
 }
 
-static inline enum rdma_network_type ib_gid_to_network_type(enum ib_gid_type gid_type,
-							    union ib_gid *gid)
+static inline enum rdma_network_type
+rdma_gid_attr_network_type(const struct ib_gid_attr *attr)
 {
-	if (gid_type == IB_GID_TYPE_IB)
+	if (attr->gid_type == IB_GID_TYPE_IB)
 		return RDMA_NETWORK_IB;
 
-	if (ipv6_addr_v4mapped((struct in6_addr *)gid))
+	if (ipv6_addr_v4mapped((struct in6_addr *)&attr->gid))
 		return RDMA_NETWORK_IPV4;
 	else
 		return RDMA_NETWORK_IPV6;