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         int err;
 100
 101         in = kzalloc(sizeof(*in), GFP_KERNEL);
 102         if (!in)
 103                 return -ENOMEM;
 104
 105         in->policy = net_to_mlx_policy(state);
 106         if (in->policy == MLX5_POLICY_INVALID) {
 107                 err = -EINVAL;
 108                 goto out;
 109         }
 110         in->field_select = MLX5_HCA_VPORT_SEL_STATE_POLICY;
 111         err = mlx5_core_modify_hca_vport_context(mdev, 1, 1, vf + 1, in);
 112
 113 out:
 114         kfree(in);
 115         return err;
 116 }
 117
 118 int mlx5_ib_get_vf_stats(struct ib_device *device, int vf,
 119                          u8 port, struct ifla_vf_stats *stats)
 120 {
 121         int out_sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
 122         struct mlx5_core_dev *mdev;
 123         struct mlx5_ib_dev *dev;
 124         void *out;
 125         int err;
 126
 127         dev = to_mdev(device);
 128         mdev = dev->mdev;
 129
 130         out = kzalloc(out_sz, GFP_KERNEL);
 131         if (!out)
 132                 return -ENOMEM;
 133
 134         err = mlx5_core_query_vport_counter(mdev, true, vf, port, out, out_sz);
 135         if (err)
 136                 goto ex;
 137
 138         stats->rx_packets = MLX5_GET64_PR(query_vport_counter_out, out, received_ib_unicast.packets);
 139         stats->tx_packets = MLX5_GET64_PR(query_vport_counter_out, out, transmitted_ib_unicast.packets);
 140         stats->rx_bytes = MLX5_GET64_PR(query_vport_counter_out, out, received_ib_unicast.octets);
 141         stats->tx_bytes = MLX5_GET64_PR(query_vport_counter_out, out, transmitted_ib_unicast.octets);
 142         stats->multicast = MLX5_GET64_PR(query_vport_counter_out, out, received_ib_multicast.packets);
 143
 144 ex:
 145         kfree(out);
 146         return err;
 147 }
 148
 149 static int set_vf_node_guid(struct ib_device *device, int vf, u8 port, u64 guid)
 150 {
 151         struct mlx5_ib_dev *dev = to_mdev(device);
 152         struct mlx5_core_dev *mdev = dev->mdev;
 153         struct mlx5_hca_vport_context *in;
 154         int err;
 155
 156         in = kzalloc(sizeof(*in), GFP_KERNEL);
 157         if (!in)
 158                 return -ENOMEM;
 159
 160         in->field_select = MLX5_HCA_VPORT_SEL_NODE_GUID;
 161         in->node_guid = guid;
 162         err = mlx5_core_modify_hca_vport_context(mdev, 1, 1, vf + 1, in);
 163         kfree(in);
 164         return err;
 165 }
 166
 167 static int set_vf_port_guid(struct ib_device *device, int vf, u8 port, u64 guid)
 168 {
 169         struct mlx5_ib_dev *dev = to_mdev(device);
 170         struct mlx5_core_dev *mdev = dev->mdev;
 171         struct mlx5_hca_vport_context *in;
 172         int err;
 173
 174         in = kzalloc(sizeof(*in), GFP_KERNEL);
 175         if (!in)
 176                 return -ENOMEM;
 177
 178         in->field_select = MLX5_HCA_VPORT_SEL_PORT_GUID;
 179         in->port_guid = guid;
 180         err = mlx5_core_modify_hca_vport_context(mdev, 1, 1, vf + 1, in);
 181         kfree(in);
 182         return err;
 183 }
 184
 185 int mlx5_ib_set_vf_guid(struct ib_device *device, int vf, u8 port,
 186                         u64 guid, int type)
 187 {
 188         if (type == IFLA_VF_IB_NODE_GUID)
 189                 return set_vf_node_guid(device, vf, port, guid);
 190         else if (type == IFLA_VF_IB_PORT_GUID)
 191                 return set_vf_port_guid(device, vf, port, guid);
 192
 193         return -EINVAL;
 194 }