IB/mlx5: Extend query_device/port to support RoCE

Using the vport access functions to retrieve the Ethernet
specific information and return this information in
ib_query_device and ib_query_port.

Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 69 insertions, 6 deletions

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 8c6e144ae75b..2b6ac2e7b4a0 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -40,6 +40,7 @@
 #include <linux/io-mapping.h>
 #include <linux/sched.h>
 #include <rdma/ib_user_verbs.h>
+#include <rdma/ib_addr.h>
 #include <linux/mlx5/vport.h>
 #include <rdma/ib_smi.h>
 #include <rdma/ib_umem.h>
@@ -120,6 +121,50 @@ static struct net_device *mlx5_ib_get_netdev(struct ib_device *device,
         return ndev;
 }
 
+static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
+                                struct ib_port_attr *props)
+{
+        struct mlx5_ib_dev *dev = to_mdev(device);
+        struct net_device *ndev;
+        enum ib_mtu ndev_ib_mtu;
+
+        memset(props, 0, sizeof(*props));
+
+        props->port_cap_flags  |= IB_PORT_CM_SUP;
+        props->port_cap_flags  |= IB_PORT_IP_BASED_GIDS;
+
+        props->gid_tbl_len      = MLX5_CAP_ROCE(dev->mdev,
+                                                roce_address_table_size);
+        props->max_mtu          = IB_MTU_4096;
+        props->max_msg_sz       = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg);
+        props->pkey_tbl_len     = 1;
+        props->state            = IB_PORT_DOWN;
+        props->phys_state       = 3;
+
+        mlx5_query_nic_vport_qkey_viol_cntr(dev->mdev,
+                                            (u16 *)&props->qkey_viol_cntr);
+
+        ndev = mlx5_ib_get_netdev(device, port_num);
+        if (!ndev)
+                return 0;
+
+        if (netif_running(ndev) && netif_carrier_ok(ndev)) {
+                props->state      = IB_PORT_ACTIVE;
+                props->phys_state = 5;
+        }
+
+        ndev_ib_mtu = iboe_get_mtu(ndev->mtu);
+
+        dev_put(ndev);
+
+        props->active_mtu       = min(props->max_mtu, ndev_ib_mtu);
+
+        props->active_width     = IB_WIDTH_4X;  /* TODO */
+        props->active_speed     = IB_SPEED_QDR; /* TODO */
+
+        return 0;
+}
+
 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
 {
         return !dev->mdev->issi;
@@ -158,13 +203,21 @@ static int mlx5_query_system_image_guid(struct ib_device *ibdev,
 
         case MLX5_VPORT_ACCESS_METHOD_HCA:
                 err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
-                if (!err)
-                        *sys_image_guid = cpu_to_be64(tmp);
-                return err;
+                break;
+
+        case MLX5_VPORT_ACCESS_METHOD_NIC:
+                err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp);
+                break;
 
         default:
                 return -EINVAL;
         }
+
+        if (!err)
+                *sys_image_guid = cpu_to_be64(tmp);
+
+        return err;
+
 }
 
 static int mlx5_query_max_pkeys(struct ib_device *ibdev,
@@ -218,13 +271,20 @@ static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
 
         case MLX5_VPORT_ACCESS_METHOD_HCA:
                 err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
-                if (!err)
-                        *node_guid = cpu_to_be64(tmp);
-                return err;
+                break;
+
+        case MLX5_VPORT_ACCESS_METHOD_NIC:
+                err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp);
+                break;
 
         default:
                 return -EINVAL;
         }
+
+        if (!err)
+                *node_guid = cpu_to_be64(tmp);
+
+        return err;
 }
 
 struct mlx5_reg_node_desc {
@@ -522,6 +582,9 @@ int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
         case MLX5_VPORT_ACCESS_METHOD_HCA:
                 return mlx5_query_hca_port(ibdev, port, props);
 
+        case MLX5_VPORT_ACCESS_METHOD_NIC:
+                return mlx5_query_port_roce(ibdev, port, props);
+
         default:
                 return -EINVAL;
         }