[dpdk-dev,v11,5/8] ethdev: add speed capabilities

diff --git a/doc/guides/nics/overview.rst b/doc/guides/nics/overview.rst
index 2d4f014..893da5f 100644
--- a/doc/guides/nics/overview.rst
+++ b/doc/guides/nics/overview.rst
@@ -88,6 +88,7 @@  Most of these differences are summarized below.
    ==================== = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
    link status                  X     X X                                   X
    link status event                  X X
+   speed capabilities
    Rx interrupt                       X X X X
    queue start/stop             X     X X X X                               X
    MTU update                   X
diff --git a/doc/guides/rel_notes/release_16_04.rst b/doc/guides/rel_notes/release_16_04.rst
index 2785b29..6ecd304 100644
--- a/doc/guides/rel_notes/release_16_04.rst
+++ b/doc/guides/rel_notes/release_16_04.rst
@@ -47,6 +47,11 @@  This section should contain new features added in this release. Sample format:
   A new function ``rte_pktmbuf_alloc_bulk()`` has been added to allow the user
   to allocate a bulk of mbufs.
 
+* **Added device link speed capabilities.**
+
+  The structure ``rte_eth_dev_info`` has now a ``speed_capa`` bitmap, which
+  allows the application to know the supported speeds of each device.
+
 * **Restored vmxnet3 Tx data ring.**
 
   Tx data ring has been shown to improve small pkt forwarding performance
@@ -394,6 +399,9 @@  This section should contain API changes. Sample format:
 * Add a short 1-2 sentence description of the API change. Use fixed width
   quotes for ``rte_function_names`` or ``rte_struct_names``. Use the past tense.
 
+* The ethdev structure ``rte_eth_dev_info`` was changed to support device
+  speed capabilities.
+
 * The functions ``rte_eth_dev_udp_tunnel_add`` and ``rte_eth_dev_udp_tunnel_delete``
   have been renamed into ``rte_eth_dev_udp_tunnel_port_add`` and
   ``rte_eth_dev_udp_tunnel_port_delete``.
diff --git a/drivers/net/bnx2x/bnx2x_ethdev.c b/drivers/net/bnx2x/bnx2x_ethdev.c
index dc9ce84..607d2f4 100644
--- a/drivers/net/bnx2x/bnx2x_ethdev.c
+++ b/drivers/net/bnx2x/bnx2x_ethdev.c
@@ -327,6 +327,7 @@  bnx2x_dev_infos_get(struct rte_eth_dev *dev, __rte_unused struct rte_eth_dev_inf
 	dev_info->min_rx_bufsize = BNX2X_MIN_RX_BUF_SIZE;
 	dev_info->max_rx_pktlen  = BNX2X_MAX_RX_PKT_LEN;
 	dev_info->max_mac_addrs  = BNX2X_MAX_MAC_ADDRS;
+	dev_info->speed_capa = ETH_LINK_SPEED_10G | ETH_LINK_SPEED_20G;
 }
 
 static void
diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
index 8c6dd59..bccdca0 100644
--- a/drivers/net/cxgbe/cxgbe_ethdev.c
+++ b/drivers/net/cxgbe/cxgbe_ethdev.c
@@ -171,6 +171,7 @@  static void cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
 
 	device_info->rx_desc_lim = cxgbe_desc_lim;
 	device_info->tx_desc_lim = cxgbe_desc_lim;
+	device_info->speed_capa = ETH_LINK_SPEED_10G | ETH_LINK_SPEED_40G;
 }
 
 static void cxgbe_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c
index b9dbc0f..2a50857 100644
--- a/drivers/net/e1000/em_ethdev.c
+++ b/drivers/net/e1000/em_ethdev.c
@@ -1055,6 +1055,10 @@  eth_em_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 		.nb_min = E1000_MIN_RING_DESC,
 		.nb_align = EM_TXD_ALIGN,
 	};
+
+	dev_info->speed_capa = ETH_LINK_SPEED_10M_HD | ETH_LINK_SPEED_10M |
+			ETH_LINK_SPEED_100M_HD | ETH_LINK_SPEED_100M |
+			ETH_LINK_SPEED_1G;
 }
 
 /* return 0 means link status changed, -1 means not changed */
diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 11786ef..b7e706a 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -1919,6 +1919,10 @@  eth_igb_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 
 	dev_info->rx_desc_lim = rx_desc_lim;
 	dev_info->tx_desc_lim = tx_desc_lim;
+
+	dev_info->speed_capa = ETH_LINK_SPEED_10M_HD | ETH_LINK_SPEED_10M |
+			ETH_LINK_SPEED_100M_HD | ETH_LINK_SPEED_100M |
+			ETH_LINK_SPEED_1G;
 }
 
 static void
diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index edc8c11..2a1c222 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -1410,6 +1410,10 @@  fm10k_dev_infos_get(struct rte_eth_dev *dev,
 		.nb_min = FM10K_MIN_TX_DESC,
 		.nb_align = FM10K_MULT_TX_DESC,
 	};
+
+	dev_info->speed_capa = ETH_LINK_SPEED_1G | ETH_LINK_SPEED_2_5G |
+			ETH_LINK_SPEED_10G | ETH_LINK_SPEED_25G |
+			ETH_LINK_SPEED_40G;
 }
 
 static int
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 5d8bdd9..dee7ef7 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -2274,6 +2274,7 @@  static void
 i40e_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 {
 	struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct i40e_vsi *vsi = pf->main_vsi;
 
 	dev_info->max_rx_queues = vsi->nb_qps;
@@ -2345,6 +2346,13 @@  i40e_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 		dev_info->max_rx_queues += dev_info->vmdq_queue_num;
 		dev_info->max_tx_queues += dev_info->vmdq_queue_num;
 	}
+
+	if (i40e_is_40G_device(hw->device_id))
+		/* For XL710 */
+		dev_info->speed_capa = ETH_LINK_SPEED_1G | ETH_LINK_SPEED_10G;
+	else
+		/* For X710 */
+		dev_info->speed_capa = ETH_LINK_SPEED_10G | ETH_LINK_SPEED_40G;
 }
 
 static int
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 9246fdb..3d2e801 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -2929,6 +2929,14 @@  ixgbe_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->hash_key_size = IXGBE_HKEY_MAX_INDEX * sizeof(uint32_t);
 	dev_info->reta_size = ixgbe_reta_size_get(hw->mac.type);
 	dev_info->flow_type_rss_offloads = IXGBE_RSS_OFFLOAD_ALL;
+
+	dev_info->speed_capa = ETH_LINK_SPEED_1G | ETH_LINK_SPEED_10G;
+	if (hw->mac.type == ixgbe_mac_X540 ||
+	    hw->mac.type == ixgbe_mac_X540_vf ||
+	    hw->mac.type == ixgbe_mac_X550 ||
+	    hw->mac.type == ixgbe_mac_X550_vf) {
+		dev_info->speed_capa |= ETH_LINK_SPEED_100M;
+	}
 }
 
 static void
diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index cc4e9aa..3a4a989 100644
--- a/drivers/net/mlx4/mlx4.c
+++ b/drivers/net/mlx4/mlx4.c
@@ -4301,6 +4301,8 @@  mlx4_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 		 0);
 	if (priv_get_ifname(priv, &ifname) == 0)
 		info->if_index = if_nametoindex(ifname);
+	info->speed_capa = ETH_LINK_SPEED_10G | ETH_LINK_SPEED_40G |
+			ETH_LINK_SPEED_56G;
 	priv_unlock(priv);
 }
 
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 6704382..3487538 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -522,6 +522,9 @@  mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 	 * size if it is not fixed.
 	 * The API should be updated to solve this problem. */
 	info->reta_size = priv->ind_table_max_size;
+	info->speed_capa = ETH_LINK_SPEED_1G | ETH_LINK_SPEED_10G |
+			ETH_LINK_SPEED_25G | ETH_LINK_SPEED_40G |
+			ETH_LINK_SPEED_50G;
 	priv_unlock(priv);
 }
 
diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 9e314bd..c9e1dc5 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -1061,6 +1061,8 @@  nfp_net_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 
 	dev_info->reta_size = NFP_NET_CFG_RSS_ITBL_SZ;
 	dev_info->hash_key_size = NFP_NET_CFG_RSS_KEY_SZ;
+
+	dev_info->speed_capa = ETH_LINK_SPEED_50G;
 }
 
 static uint32_t
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index d7c8a66..7aa39f9 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -242,6 +242,23 @@  struct rte_eth_stats {
 };
 
 /**
+ * Device supported speeds bitmap flags
+ */
+#define ETH_LINK_SPEED_10M_HD   (1 <<  1)  /**<  10 Mbps half-duplex */
+#define ETH_LINK_SPEED_10M      (1 <<  2)  /**<  10 Mbps full-duplex */
+#define ETH_LINK_SPEED_100M_HD  (1 <<  3)  /**< 100 Mbps half-duplex */
+#define ETH_LINK_SPEED_100M     (1 <<  4)  /**< 100 Mbps full-duplex */
+#define ETH_LINK_SPEED_1G       (1 <<  5)  /**<   1 Gbps */
+#define ETH_LINK_SPEED_2_5G     (1 <<  6)  /**< 2.5 Gbps */
+#define ETH_LINK_SPEED_5G       (1 <<  7)  /**<   5 Gbps */
+#define ETH_LINK_SPEED_10G      (1 <<  8)  /**<  10 Gbps */
+#define ETH_LINK_SPEED_20G      (1 <<  9)  /**<  20 Gbps */
+#define ETH_LINK_SPEED_25G      (1 << 10)  /**<  25 Gbps */
+#define ETH_LINK_SPEED_40G      (1 << 11)  /**<  40 Gbps */
+#define ETH_LINK_SPEED_50G      (1 << 12)  /**<  50 Gbps */
+#define ETH_LINK_SPEED_56G      (1 << 13)  /**<  56 Gbps */
+
+/**
  * Ethernet numeric link speeds in Mbps
  */
 #define ETH_LINK_SPEED_AUTONEG     0 /**< Auto-negotiate link speed. */
@@ -850,6 +867,9 @@  struct rte_eth_conf {
 #define DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM 0x00000080 /**< Used for tunneling packet. */
 #define DEV_TX_OFFLOAD_QINQ_INSERT 0x00000100
 
+/**
+ * Ethernet device information
+ */
 struct rte_eth_dev_info {
 	struct rte_pci_device *pci_dev; /**< Device PCI information. */
 	const char *driver_name; /**< Device Driver name. */
@@ -878,6 +898,7 @@  struct rte_eth_dev_info {
 	uint16_t vmdq_pool_base;  /**< First ID of VMDQ pools. */
 	struct rte_eth_desc_lim rx_desc_lim;  /**< RX descriptors limits */
 	struct rte_eth_desc_lim tx_desc_lim;  /**< TX descriptors limits */
+	uint32_t speed_capa;  /**< Supported speeds bitmap (ETH_LINK_SPEED_). */
 };
 
 /**