drivers/infiniband/hw/mlx5/ib_virt.c

   1 /*
   2  * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/mlx5/vport.h>
  35 #include "mlx5_ib.h"
  36
  37 static inline u32 mlx_to_net_policy(enum port_state_policy mlx_policy)
  38 {
  39         switch (mlx_policy) {
  40         case MLX5_POLICY_DOWN:
  41                 return IFLA_VF_LINK_STATE_DISABLE;
  42         case MLX5_POLICY_UP:
  43                 return IFLA_VF_LINK_STATE_ENABLE;
  44         case MLX5_POLICY_FOLLOW:
  45                 return IFLA_VF_LINK_STATE_AUTO;
  46         default:
  47                 return __IFLA_VF_LINK_STATE_MAX;
  48         }
  49 }
  50
  51 int mlx5_ib_get_vf_config(struct ib_device *device, int vf, u8 port,
  52                           struct ifla_vf_info *info)
  53 {
  54         struct mlx5_ib_dev *dev = to_mdev(device);
  55         struct mlx5_core_dev *mdev = dev->mdev;
  56         struct mlx5_hca_vport_context *rep;
  57         int err;
  58
  59         rep = kzalloc(sizeof(*rep), GFP_KERNEL);
  60         if (!rep)
  61                 return -ENOMEM;
  62
  63         err = mlx5_query_hca_vport_context(mdev, 1, 1,  vf + 1, rep);
  64         if (err) {
  65                 mlx5_ib_warn(dev, "failed to query port policy for vf %d (%d)\n",
  66                              vf, err);
  67                 goto free;
  68         }
  69         memset(info, 0, sizeof(*info));
  70         info->linkstate = mlx_to_net_policy(rep->policy);
  71         if (info->linkstate == __IFLA_VF_LINK_STATE_MAX)
  72                 err = -EINVAL;
  73
  74 free:
  75         kfree(rep);
  76         return err;
  77 }
  78
  79 static inline enum port_state_policy net_to_mlx_policy(int policy)
  80 {
  81         switch (policy) {
  82         case IFLA_VF_LINK_STATE_DISABLE:
  83                 return MLX5_POLICY_DOWN;
  84         case IFLA_VF_LINK_STATE_ENABLE:
  85                 return MLX5_POLICY_UP;
  86         case IFLA_VF_LINK_STATE_AUTO:
  87                 return MLX5_POLICY_FOLLOW;
  88         default:
  89                 return MLX5_POLICY_INVALID;
  90         }
  91 }
  92
  93 int mlx5_ib_set_vf_link_state(struct ib_device *device, int vf,
  94                               u8 port, int state)
  95 {
  96         struct mlx5_ib_dev *dev = to_mdev(device);
  97         struct mlx5_core_dev *mdev = dev->mdev;
  98         struct mlx5_hca_vport_context *in;
  99         struct mlx5_vf_context *vfs_ctx = mdev->priv.sriov.vfs_ctx;
 100         int err;
 101
 102         in = kzalloc(sizeof(*in), GFP_KERNEL);
 103         if (!in)
 104                 return -ENOMEM;
 105
 106         in->policy = net_to_mlx_policy(state);
 107         if (in->policy == MLX5_POLICY_INVALID) {
 108                 err = -EINVAL;
 109                 goto out;
 110         }
 111         in->field_select = MLX5_HCA_VPORT_SEL_STATE_POLICY;
 112         err = mlx5_core_modify_hca_vport_context(mdev, 1, 1, vf + 1, in);
 113         if (!err)
 114                 vfs_ctx[vf].policy = in->policy;
 115
 116 out:
 117         kfree(in);
 118         return err;
 119 }
 120
 121 int mlx5_ib_get_vf_stats(struct ib_device *device, int vf,
 122                          u8 port, struct ifla_vf_stats *stats)
 123 {
 124         int out_sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
 125         struct mlx5_core_dev *mdev;
 126         struct mlx5_ib_dev *dev;
 127         void *out;
 128         int err;
 129
 130         dev = to_mdev(device);
 131         mdev = dev->mdev;
 132
 133         out = kzalloc(out_sz, GFP_KERNEL);
 134         if (!out)
 135                 return -ENOMEM;
 136
 137         err = mlx5_core_query_vport_counter(mdev, true, vf, port, out, out_sz);
 138         if (err)
 139                 goto ex;
 140
 141         stats->rx_packets = MLX5_GET64_PR(query_vport_counter_out, out, received_ib_unicast.packets);
 142         stats->tx_packets = MLX5_GET64_PR(query_vport_counter_out, out, transmitted_ib_unicast.packets);
 143         stats->rx_bytes = MLX5_GET64_PR(query_vport_counter_out, out, received_ib_unicast.octets);
 144         stats->tx_bytes = MLX5_GET64_PR(query_vport_counter_out, out, transmitted_ib_unicast.octets);
 145         stats->multicast = MLX5_GET64_PR(query_vport_counter_out, out, received_ib_multicast.packets);
 146
 147 ex:
 148         kfree(out);
 149         return err;
 150 }
 151
 152 static int set_vf_node_guid(struct ib_device *device, int vf, u8 port, u64 guid)
 153 {
 154         struct mlx5_ib_dev *dev = to_mdev(device);
 155         struct mlx5_core_dev *mdev = dev->mdev;
 156         struct mlx5_hca_vport_context *in;
 157         struct mlx5_vf_context *vfs_ctx = mdev->priv.sriov.vfs_ctx;
 158         int err;
 159
 160         in = kzalloc(sizeof(*in), GFP_KERNEL);
 161         if (!in)
 162                 return -ENOMEM;
 163
 164         in->field_select = MLX5_HCA_VPORT_SEL_NODE_GUID;
 165         in->node_guid = guid;
 166         err = mlx5_core_modify_hca_vport_context(mdev, 1, 1, vf + 1, in);
 167         if (!err) {
 168                 vfs_ctx[vf].node_guid = guid;
 169                 vfs_ctx[vf].node_guid_valid = 1;
 170         }
 171         kfree(in);
 172         return err;
 173 }
 174
 175 static int set_vf_port_guid(struct ib_device *device, int vf, u8 port, u64 guid)
 176 {
 177         struct mlx5_ib_dev *dev = to_mdev(device);
 178         struct mlx5_core_dev *mdev = dev->mdev;
 179         struct mlx5_hca_vport_context *in;
 180         struct mlx5_vf_context *vfs_ctx = mdev->priv.sriov.vfs_ctx;
 181         int err;
 182
 183         in = kzalloc(sizeof(*in), GFP_KERNEL);
 184         if (!in)
 185                 return -ENOMEM;
 186
 187         in->field_select = MLX5_HCA_VPORT_SEL_PORT_GUID;
 188         in->port_guid = guid;
 189         err = mlx5_core_modify_hca_vport_context(mdev, 1, 1, vf + 1, in);
 190         if (!err) {
 191                 vfs_ctx[vf].port_guid = guid;
 192                 vfs_ctx[vf].port_guid_valid = 1;
 193         }
 194         kfree(in);
 195         return err;
 196 }
 197
 198 int mlx5_ib_set_vf_guid(struct ib_device *device, int vf, u8 port,
 199                         u64 guid, int type)
 200 {
 201         if (type == IFLA_VF_IB_NODE_GUID)
 202                 return set_vf_node_guid(device, vf, port, guid);
 203         else if (type == IFLA_VF_IB_PORT_GUID)
 204                 return set_vf_port_guid(device, vf, port, guid);
 205
 206         return -EINVAL;
 207 }
 208
 209 int mlx5_ib_get_vf_guid(struct ib_device *device, int vf, u8 port,
 210                         struct ifla_vf_guid *node_guid,
 211                         struct ifla_vf_guid *port_guid)
 212 {
 213         struct mlx5_ib_dev *dev = to_mdev(device);
 214         struct mlx5_core_dev *mdev = dev->mdev;
 215         struct mlx5_vf_context *vfs_ctx = mdev->priv.sriov.vfs_ctx;
 216
 217         node_guid->guid =
 218                 vfs_ctx[vf].node_guid_valid ? vfs_ctx[vf].node_guid : 0;
 219         port_guid->guid =
 220                 vfs_ctx[vf].port_guid_valid ? vfs_ctx[vf].port_guid : 0;
 221
 222         return 0;
 223 }