Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull Mellanox rdma updates from Doug Ledford:
 "Mellanox specific updates for 4.11 merge window

  Because the Mellanox code required being based on a net-next tree, I
  keept it separate from the remainder of the RDMA stack submission that
  is based on 4.10-rc3.

  This branch contains:

   - Various mlx4 and mlx5 fixes and minor changes

   - Support for adding a tag match rule to flow specs

   - Support for cvlan offload operation for raw ethernet QPs

   - A change to the core IB code to recognize raw eth capabilities and
     enumerate them (touches non-Mellanox code)

   - Implicit On-Demand Paging memory registration support"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (40 commits)
  IB/mlx5: Fix configuration of port capabilities
  IB/mlx4: Take source GID by index from HW GID table
  IB/mlx5: Fix blue flame buffer size calculation
  IB/mlx4: Remove unused variable from function declaration
  IB: Query ports via the core instead of direct into the driver
  IB: Add protocol for USNIC
  IB/mlx4: Support raw packet protocol
  IB/mlx5: Support raw packet protocol
  IB/core: Add raw packet protocol
  IB/mlx5: Add implicit MR support
  IB/mlx5: Expose MR cache for mlx5_ib
  IB/mlx5: Add null_mkey access
  IB/umem: Indicate that process is being terminated
  IB/umem: Update on demand page (ODP) support
  IB/core: Add implicit MR flag
  IB/mlx5: Support creation of a WQ with scatter FCS offload
  IB/mlx5: Enable QP creation with cvlan offload
  IB/mlx5: Enable WQ creation and modification with cvlan offload
  IB/mlx5: Expose vlan offloads capabilities
  IB/uverbs: Enable QP creation with cvlan offload
  ...

drivers/infiniband/hw/mlx4/alias_GUID.c

@@ -499,6 +499,7 @@ static int set_guid_rec(struct ib_device *ibdev,
 	struct list_head *head =
 		&dev->sriov.alias_guid.ports_guid[port - 1].cb_list;
 
+	memset(&attr, 0, sizeof(attr));
 	err = __mlx4_ib_query_port(ibdev, port, &attr, 1);
 	if (err) {
 		pr_debug("mlx4_ib_query_port failed (err: %d), port: %d\n",

drivers/infiniband/hw/mlx4/main.c

@@ -678,7 +678,7 @@ static u8 state_to_phys_state(enum ib_port_state state)
 }
 
 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
-			       struct ib_port_attr *props, int netw_view)
+			       struct ib_port_attr *props)
 {
 
 	struct mlx4_ib_dev *mdev = to_mdev(ibdev);
@@ -741,11 +741,11 @@ int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
 {
 	int err;
 
-	memset(props, 0, sizeof *props);
+	/* props being zeroed by the caller, avoid zeroing it here */
 
 	err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
 		ib_link_query_port(ibdev, port, props, netw_view) :
-				eth_link_query_port(ibdev, port, props, netw_view);
+				eth_link_query_port(ibdev, port, props);
 
 	return err;
 }
@@ -1014,7 +1014,7 @@ static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 
 	mutex_lock(&mdev->cap_mask_mutex);
 
-	err = mlx4_ib_query_port(ibdev, port, &attr);
+	err = ib_query_port(ibdev, port, &attr);
 	if (err)
 		goto out;
 
@@ -2537,24 +2537,27 @@ static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
 	struct mlx4_ib_dev *mdev = to_mdev(ibdev);
 	int err;
 
-	err = mlx4_ib_query_port(ibdev, port_num, &attr);
-	if (err)
-		return err;
-
-	immutable->pkey_tbl_len = attr.pkey_tbl_len;
-	immutable->gid_tbl_len = attr.gid_tbl_len;
-
 	if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND) {
 		immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
+		immutable->max_mad_size = IB_MGMT_MAD_SIZE;
 	} else {
 		if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
 			immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
 		if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2)
 			immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
 				RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
+		immutable->core_cap_flags |= RDMA_CORE_PORT_RAW_PACKET;
+		if (immutable->core_cap_flags & (RDMA_CORE_PORT_IBA_ROCE |
+		    RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP))
+			immutable->max_mad_size = IB_MGMT_MAD_SIZE;
 	}
 
-	immutable->max_mad_size = IB_MGMT_MAD_SIZE;
+	err = ib_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
 
 	return 0;
 }

drivers/infiniband/hw/mlx4/qp.c

@@ -2420,11 +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;
@@ -2450,8 +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
@@ -2462,18 +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);
+			err = fill_gid_by_hw_index(ibdev, sqp->qp.port,
+					    ah->av.ib.gid_index,
+					    &sgid, &gid_type);
 			if (!err) {
-				if (gid_attr.ndev)
-					dev_put(gid_attr.ndev);
-				if (!memcmp(&sgid, &zgid, sizeof(sgid)))
-					err = -ENOENT;
-			}
-			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;
@@ -2951,21 +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);
-			}
 		}
 	}
 

drivers/infiniband/hw/mlx4/sysfs.c

@@ -226,6 +226,7 @@ static int add_port_entries(struct mlx4_ib_dev *device, int port_num)
 	int ret = 0 ;
 	struct ib_port_attr attr;
 
+	memset(&attr, 0, sizeof(attr));
 	/* get the physical gid and pkey table sizes.*/
 	ret = __mlx4_ib_query_port(&device->ib_dev, port_num, &attr, 1);
 	if (ret)