net/virtio: support LRO

[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 adae9a9..157e44c 100644 (file)
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1369,6 +1369,10 @@ virtio_dev_configure(struct rte_eth_dev *dev)
        req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
        if (rxmode->hw_ip_checksum)
                req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
+       if (rxmode->enable_lro)
+               req_features |=
+                       (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
+                       (1ULL << VIRTIO_NET_F_GUEST_TSO6);
 
        /* if request features changed, reinit the device */
        if (req_features != hw->req_guest_features) {
@@ -1384,6 +1388,14 @@ virtio_dev_configure(struct rte_eth_dev *dev)
                return -ENOTSUP;
        }
 
+       if (rxmode->enable_lro &&
+               (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
+                       !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4))) {
+               PMD_DRV_LOG(NOTICE,
+                       "lro not available on this host");
+               return -ENOTSUP;
+       }
+
        /* Setup and start control queue */
        if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
                ret = virtio_dev_cq_queue_setup(dev,
@@ -1599,7 +1611,8 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
        };
        dev_info->rx_offload_capa =
                DEV_RX_OFFLOAD_TCP_CKSUM |
-               DEV_RX_OFFLOAD_UDP_CKSUM;
+               DEV_RX_OFFLOAD_UDP_CKSUM |
+               DEV_RX_OFFLOAD_TCP_LRO;
        dev_info->tx_offload_capa = 0;
 
        if (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) {