net/mlx5: support sub-function representor

[dpdk.git] / drivers / net / mlx5 / mlx5_ethdev.c

diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 51b39dd..1ffb13c 100644 (file)
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -377,6 +377,106 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
        return 0;
 }
 
+/**
+ * Calculate representor ID from port switch info.
+ *
+ * Uint16 representor ID bits definition:
+ *   pf: 2
+ *   type: 2
+ *   vf/sf: 12
+ *
+ * @param info
+ *   Port switch info.
+ *
+ * @return
+ *   Encoded representor ID.
+ */
+uint16_t
+mlx5_representor_id_encode(const struct mlx5_switch_info *info)
+{
+       enum rte_eth_representor_type type = RTE_ETH_REPRESENTOR_VF;
+       uint16_t repr = info->port_name;
+
+       if (info->representor == 0)
+               return UINT16_MAX;
+       if (info->name_type == MLX5_PHYS_PORT_NAME_TYPE_PFSF)
+               type = RTE_ETH_REPRESENTOR_SF;
+       if (info->name_type == MLX5_PHYS_PORT_NAME_TYPE_PFHPF)
+               repr = UINT16_MAX;
+       return MLX5_REPRESENTOR_ID(info->pf_num, type, repr);
+}
+
+/**
+ * DPDK callback to get information about representor.
+ *
+ * Representor ID bits definition:
+ *   vf/sf: 12
+ *   type: 2
+ *   pf: 2
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param[out] info
+ *   Nullable info structure output buffer.
+ *
+ * @return
+ *   negative on error, or the number of representor ranges.
+ */
+int
+mlx5_representor_info_get(struct rte_eth_dev *dev,
+                         struct rte_eth_representor_info *info)
+{
+       struct mlx5_priv *priv = dev->data->dev_private;
+       int n_type = 3; /* Number of representor types, VF, HPF and SF. */
+       int n_pf = 2; /* Number of PFs. */
+       int i = 0, pf;
+
+       if (info == NULL)
+               goto out;
+       info->controller = 0;
+       info->pf = priv->pf_bond >= 0 ? priv->pf_bond : 0;
+       for (pf = 0; pf < n_pf; ++pf) {
+               /* VF range. */
+               info->ranges[i].type = RTE_ETH_REPRESENTOR_VF;
+               info->ranges[i].controller = 0;
+               info->ranges[i].pf = pf;
+               info->ranges[i].vf = 0;
+               info->ranges[i].id_base =
+                       MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, 0);
+               info->ranges[i].id_end =
+                       MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
+               snprintf(info->ranges[i].name,
+                        sizeof(info->ranges[i].name), "pf%dvf", pf);
+               i++;
+               /* HPF range. */
+               info->ranges[i].type = RTE_ETH_REPRESENTOR_VF;
+               info->ranges[i].controller = 0;
+               info->ranges[i].pf = pf;
+               info->ranges[i].vf = UINT16_MAX;
+               info->ranges[i].id_base =
+                       MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
+               info->ranges[i].id_end =
+                       MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
+               snprintf(info->ranges[i].name,
+                        sizeof(info->ranges[i].name), "pf%dvf", pf);
+               i++;
+               /* SF range. */
+               info->ranges[i].type = RTE_ETH_REPRESENTOR_SF;
+               info->ranges[i].controller = 0;
+               info->ranges[i].pf = pf;
+               info->ranges[i].vf = 0;
+               info->ranges[i].id_base =
+                       MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, 0);
+               info->ranges[i].id_end =
+                       MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
+               snprintf(info->ranges[i].name,
+                        sizeof(info->ranges[i].name), "pf%dsf", pf);
+               i++;
+       }
+out:
+       return n_type * n_pf;
+}
+
 /**
  * Get firmware version of a device.
  *