Enqueue host TSO4/6 offload in guest side. Signed-off-by: Jijiang Liu <jijiang.liu at intel.com> --- drivers/net/virtio/virtio_rxtx.c | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c index c5b53bb..68b293e 100644 --- a/drivers/net/virtio/virtio_rxtx.c +++ b/drivers/net/virtio/virtio_rxtx.c @@ -198,6 +198,31 @@ virtqueue_enqueue_recv_refill(struct virtqueue *vq, struct rte_mbuf *cookie) return 0; } +static int +virtqueue_enqueue_offload(struct virtqueue *txvq, struct rte_mbuf *m, + uint16_t idx, uint16_t hdr_sz) +{ + struct virtio_net_hdr *hdr = (struct virtio_net_hdr *)(uintptr_t) + (txvq->virtio_net_hdr_addr + idx * hdr_sz); + + if (m->tso_segsz != 0 && m->ol_flags & PKT_TX_TCP_SEG) { + if (m->ol_flags & PKT_TX_IPV4) { + if (!vtpci_with_feature(txvq->hw, + VIRTIO_NET_F_HOST_TSO4)) + return -1; + hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; + } else if (m->ol_flags & PKT_TX_IPV6) { + if (!vtpci_with_feature(txvq->hw, + VIRTIO_NET_F_HOST_TSO6)) + return -1; + hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; + } + hdr->gso_size = m->tso_segsz; + hdr->hdr_len = m->l2_len + m->l3_len + m->l4_len; + } + return 0; +} + static int virtqueue_enqueue_xmit(struct virtqueue *txvq, struct rte_mbuf *cookie) { @@ -221,6 +246,9 @@ virtqueue_enqueue_xmit(struct virtqueue *txvq, struct rte_mbuf *cookie) dxp->cookie = (void *)cookie; dxp->ndescs = needed; + if (virtqueue_enqueue_offload(txvq, cookie, idx, head_size) < 0) + return -EPERM; + start_dp = txvq->vq_ring.desc; start_dp[idx].addr = txvq->virtio_net_hdr_mem + idx * head_size; -- 1.7.7.6