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

Pull main InfiniBand/RDMA updates from Roland Dreier:

 - add iWARP port mapper to avoid conflicts between RDMA and normal
   stack TCP connections.

 - fixes for i386 / x86-64 structure padding differences (ABI
   compatibility for 32-on-64) from Yann Droneaud.

 - a pile of SRP initiator fixes from Bart Van Assche.

 - fixes for a writeback / memory allocation deadlock with NFS over
   IPoIB connected mode from Jiri Kosina.

 - the usual fixes and cleanups to mlx4, mlx5, cxgb4 and other low-level
   drivers.

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (61 commits)
  RDMA/cxgb4: Add support for iWARP Port Mapper user space service
  RDMA/nes: Add support for iWARP Port Mapper user space service
  RDMA/core: Add support for iWARP Port Mapper user space service
  IB/mlx4: Fix gfp passing in create_qp_common()
  IB/umad: Fix use-after-free on close
  IB/core: Fix kobject leak on device register error flow
  RDMA/cxgb4: add missing padding at end of struct c4iw_alloc_ucontext_resp
  mlx4_core: Fix GFP flags parameters to be gfp_t
  IB/core: Fix port kobject deletion during error flow
  IB/core: Remove unneeded kobject_get/put calls
  IB/core: Fix sparse warnings about redeclared functions
  IB/mad: Fix sparse warning about gfp_t use
  IB/mlx4: Implement IB_QP_CREATE_USE_GFP_NOIO
  IB: Add a QP creation flag to use GFP_NOIO allocations
  IB: Return error for unsupported QP creation flags
  IB: Allow build of hw/ and ulp/ subdirectories independently
  mlx4_core: Move handling of MLX4_QP_ST_MLX to proper switch statement
  RDMA/cxgb4: Add missing padding at end of struct c4iw_create_cq_resp
  IB/srp: Avoid problems if a header uses pr_fmt
  IB/umad: Fix error handling
  ...

drivers/infiniband/hw/mlx4/main.c

@@ -545,12 +545,11 @@ static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
 	return 0;
 }
 
-static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
-			 u32 cap_mask)
+static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
+			    u32 cap_mask)
 {
 	struct mlx4_cmd_mailbox *mailbox;
 	int err;
-	u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 
 	mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
 	if (IS_ERR(mailbox))
@@ -564,8 +563,8 @@ static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 		((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
 	}
 
-	err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
-		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
+	err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
+		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
 
 	mlx4_free_cmd_mailbox(dev->dev, mailbox);
 	return err;
@@ -574,11 +573,20 @@ static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 			       struct ib_port_modify *props)
 {
+	struct mlx4_ib_dev *mdev = to_mdev(ibdev);
+	u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 	struct ib_port_attr attr;
 	u32 cap_mask;
 	int err;
 
-	mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
+	/* return OK if this is RoCE. CM calls ib_modify_port() regardless
+	 * of whether port link layer is ETH or IB. For ETH ports, qkey
+	 * violations and port capabilities are not meaningful.
+	 */
+	if (is_eth)
+		return 0;
+
+	mutex_lock(&mdev->cap_mask_mutex);
 
 	err = mlx4_ib_query_port(ibdev, port, &attr);
 	if (err)
@@ -587,9 +595,9 @@ static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
 	cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
 		~props->clr_port_cap_mask;
 
-	err = mlx4_SET_PORT(to_mdev(ibdev), port,
-			    !!(mask & IB_PORT_RESET_QKEY_CNTR),
-			    cap_mask);
+	err = mlx4_ib_SET_PORT(mdev, port,
+			       !!(mask & IB_PORT_RESET_QKEY_CNTR),
+			       cap_mask);
 
 out:
 	mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);