diff options
Diffstat (limited to 'src/vnet/devices/virtio/device.c')
| -rw-r--r-- | src/vnet/devices/virtio/device.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/src/vnet/devices/virtio/device.c b/src/vnet/devices/virtio/device.c index aa6a342f90b..609ffb47de8 100644 --- a/src/vnet/devices/virtio/device.c +++ b/src/vnet/devices/virtio/device.c @@ -117,7 +117,7 @@ virtio_free_used_desc (vlib_main_t * vm, virtio_vring_t * vring) static_always_inline u16 add_buffer_to_slot (vlib_main_t * vm, virtio_if_t * vif, virtio_vring_t * vring, u32 bi, u16 avail, u16 next, - u16 mask) + u16 mask, int do_gso) { u16 n_added = 0; int hdr_sz = vif->virtio_net_hdr_sz; @@ -127,6 +127,25 @@ add_buffer_to_slot (vlib_main_t * vm, virtio_if_t * vif, struct virtio_net_hdr_v1 *hdr = vlib_buffer_get_current (b) - hdr_sz; clib_memset (hdr, 0, hdr_sz); + if (do_gso && (b->flags & VNET_BUFFER_F_GSO)) + { + if (b->flags & VNET_BUFFER_F_IS_IP4) + { + hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; + hdr->gso_size = vnet_buffer2 (b)->gso_size; + hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; + hdr->csum_start = vnet_buffer (b)->l4_hdr_offset; // 0x22; + hdr->csum_offset = 0x10; + } + else + { + hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; + hdr->gso_size = vnet_buffer2 (b)->gso_size; + hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; + hdr->csum_start = vnet_buffer (b)->l4_hdr_offset; // 0x36; + hdr->csum_offset = 0x10; + } + } if (PREDICT_TRUE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) == 0)) { @@ -219,7 +238,8 @@ add_buffer_to_slot (vlib_main_t * vm, virtio_if_t * vif, static_always_inline uword virtio_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame, virtio_if_t * vif) + vlib_frame_t * frame, virtio_if_t * vif, + int do_gso) { u8 qid = 0; u16 n_left = frame->n_vectors; @@ -246,7 +266,8 @@ virtio_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node, { u16 n_added = 0; n_added = - add_buffer_to_slot (vm, vif, vring, buffers[0], avail, next, mask); + add_buffer_to_slot (vm, vif, vring, buffers[0], avail, next, mask, + do_gso); if (!n_added) break; avail += n_added; @@ -286,7 +307,12 @@ virtio_interface_tx (vlib_main_t * vm, vnet_interface_output_runtime_t *rund = (void *) node->runtime_data; virtio_if_t *vif = pool_elt_at_index (nm->interfaces, rund->dev_instance); - return virtio_interface_tx_inline (vm, node, frame, vif); + vnet_main_t *vnm = vnet_get_main (); + if (vnm->interface_main.gso_interface_count > 0) + return virtio_interface_tx_inline (vm, node, frame, vif, 1 /* do_gso */ ); + else + return virtio_interface_tx_inline (vm, node, frame, vif, + 0 /* no do_gso */ ); } static void |