net/virtio: improve offload check performance

[dpdk.git] / drivers / net / virtio / virtio_ethdev.c

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 15d5b4f..8c636b5 100644 (file)
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1798,6 +1798,22 @@ rte_virtio_pmd_init(void)
        rte_pci_register(&rte_virtio_pmd);
 }
 
+static bool
+rx_offload_enabled(struct virtio_hw *hw)
+{
+       return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
+               vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
+               vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
+}
+
+static bool
+tx_offload_enabled(struct virtio_hw *hw)
+{
+       return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
+               vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
+               vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
+}
+
 /*
  * Configure virtio device
  * It returns 0 on success.
@@ -1877,6 +1893,9 @@ virtio_dev_configure(struct rte_eth_dev *dev)
                return -ENOTSUP;
        }
 
+       hw->has_tx_offload = tx_offload_enabled(hw);
+       hw->has_rx_offload = rx_offload_enabled(hw);
+
        if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
                /* Enable vector (0) for Link State Intrerrupt */
                if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==