ethdev: add support for device offload capabilities

1) Make device RX and TX offload capabilities to be returned in the
   rte_eth_dev_info data structure by the function rte_eth_dev_info_get

   The following initial set of RX offload capabilities are defined:
   - VLAN header stripping
   - IPv4 header checksum check
   - UDP checksum check
   - TCP checksum check
   - TCP large receive offload (LRO)

   The following initial set of TX offload capabilities are defined:
   - VLAN header insertion
   - IPv4 header checksum computation
   - UDP checksum computation
   - TCP checksum computation
   - SCTP checksum computation
   - TCP segmentation offload (Transmit Segmentation Offload)
   - UDP segmentation offload

   2) Update the eth_dev_infos_get() function of the igb and ixgbe PMDs
      to return the offload capabilities which are supported by the
      device and that are effectively managed by the driver.

Signed-off-by: Ivan Boule <ivan.boule@6wind.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index c1c64bf..4bb27ce 100644 (file)
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -1034,6 +1034,9 @@ rte_eth_dev_info_get(uint8_t port_id, struct rte_eth_dev_info *dev_info)
        }
        dev = &rte_eth_devices[port_id];
 
+       /* Default device offload capabilities to zero */
+       dev_info->rx_offload_capa = 0;
+       dev_info->tx_offload_capa = 0;
        FUNC_PTR_OR_RET(*dev->dev_ops->dev_infos_get);
        (*dev->dev_ops->dev_infos_get)(dev, dev_info);
        dev_info->pci_dev = dev->pci_dev;

diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 63bc173..9b0924a 100644 (file)
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -759,6 +759,27 @@ struct rte_eth_conf {
  * an Ethernet device, such as the controlling driver of the device,
  * its PCI context, etc...
  */
+
+/**
+ * RX offload capabilities of a device.
+ */
+#define DEV_RX_OFFLOAD_VLAN_STRIP  0x00000001
+#define DEV_RX_OFFLOAD_IPV4_CKSUM  0x00000002
+#define DEV_RX_OFFLOAD_UDP_CKSUM   0x00000004
+#define DEV_RX_OFFLOAD_TCP_CKSUM   0x00000008
+#define DEV_RX_OFFLOAD_TCP_LRO     0x00000010
+
+/**
+ * TX offload capabilities of a device.
+ */
+#define DEV_TX_OFFLOAD_VLAN_INSERT 0x00000001
+#define DEV_TX_OFFLOAD_IPV4_CKSUM  0x00000002
+#define DEV_TX_OFFLOAD_UDP_CKSUM   0x00000004
+#define DEV_TX_OFFLOAD_TCP_CKSUM   0x00000008
+#define DEV_TX_OFFLOAD_SCTP_CKSUM  0x00000010
+#define DEV_TX_OFFLOAD_TCP_TSO     0x00000020
+#define DEV_TX_OFFLOAD_UDP_TSO     0x00000040
+
 struct rte_eth_dev_info {
        struct rte_pci_device *pci_dev; /**< Device PCI information. */
        const char *driver_name; /**< Device Driver name. */
@@ -771,6 +792,8 @@ struct rte_eth_dev_info {
        /** Maximum number of hash MAC addresses for MTA and UTA. */
        uint16_t max_vfs; /**< Maximum number of VFs. */
        uint16_t max_vmdq_pools; /**< Maximum number of VMDq pools. */
+       uint32_t rx_offload_capa; /**< Device RX offload capabilities. */
+       uint32_t tx_offload_capa; /**< Device TX offload capabilities. */
 };
 
 struct rte_eth_dev;

diff --git a/lib/librte_pmd_e1000/igb_ethdev.c b/lib/librte_pmd_e1000/igb_ethdev.c
index 5536444..9ac3340 100644 (file)
--- a/lib/librte_pmd_e1000/igb_ethdev.c
+++ b/lib/librte_pmd_e1000/igb_ethdev.c
@@ -1125,6 +1125,17 @@ eth_igb_infos_get(struct rte_eth_dev *dev,
        dev_info->min_rx_bufsize = 256; /* See BSIZE field of RCTL register. */
        dev_info->max_rx_pktlen  = 0x3FFF; /* See RLPML register. */
        dev_info->max_mac_addrs = hw->mac.rar_entry_count;
+       dev_info->rx_offload_capa =
+               DEV_RX_OFFLOAD_VLAN_STRIP |
+               DEV_RX_OFFLOAD_IPV4_CKSUM |
+               DEV_RX_OFFLOAD_UDP_CKSUM  |
+               DEV_RX_OFFLOAD_TCP_CKSUM;
+       dev_info->tx_offload_capa =
+               DEV_TX_OFFLOAD_VLAN_INSERT |
+               DEV_TX_OFFLOAD_IPV4_CKSUM  |
+               DEV_TX_OFFLOAD_UDP_CKSUM   |
+               DEV_TX_OFFLOAD_TCP_CKSUM   |
+               DEV_TX_OFFLOAD_SCTP_CKSUM;
 
        switch (hw->mac.type) {
        case e1000_82575:

diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
index af72dbb..82c5542 100644 (file)
--- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
@@ -1699,6 +1699,17 @@ ixgbe_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
                dev_info->max_vmdq_pools = ETH_16_POOLS;
        else
                dev_info->max_vmdq_pools = ETH_64_POOLS;
+       dev_info->rx_offload_capa =
+               DEV_RX_OFFLOAD_VLAN_STRIP |
+               DEV_RX_OFFLOAD_IPV4_CKSUM |
+               DEV_RX_OFFLOAD_UDP_CKSUM  |
+               DEV_RX_OFFLOAD_TCP_CKSUM;
+       dev_info->tx_offload_capa =
+               DEV_TX_OFFLOAD_VLAN_INSERT |
+               DEV_TX_OFFLOAD_IPV4_CKSUM  |
+               DEV_TX_OFFLOAD_UDP_CKSUM   |
+               DEV_TX_OFFLOAD_TCP_CKSUM   |
+               DEV_TX_OFFLOAD_SCTP_CKSUM;
 }
 
 /* return 0 means link status changed, -1 means not changed */