diff options
| author |   Mohsin Kazmi <sykazmi@cisco.com> | 2019-12-06 15:47:48 +0100 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2019-12-06 17:22:32 +0000 |
| commit | 157a4ab4043cd9d1b6ac26b7853f1471a9095756 (patch) | |
| tree | f36d68b2f1a3b85704cd241131f3153a8e1492e4 /src/vnet/devices/virtio/node.c | |
| parent | b0384230d95d9de5e5fec0a311b8644c99f85c31 (diff) | |
gso: fix the tap/virtio driver for header offset
Type: fix
Change-Id: Ied34466907fa8ad44f997c600dbf481be4d22027
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/devices/virtio/node.c')
| -rw-r--r-- | src/vnet/devices/virtio/node.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/src/vnet/devices/virtio/node.c b/src/vnet/devices/virtio/node.c index fc2317ecc69..e9c72ebdaa1 100644 --- a/src/vnet/devices/virtio/node.c +++ b/src/vnet/devices/virtio/node.c @@ -145,6 +145,7 @@ static_always_inline void fill_gso_buffer_flags (vlib_buffer_t * b0, struct virtio_net_hdr_v1 *hdr) { u8 l4_proto = 0; + u8 l4_hdr_sz = 0; if (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) { @@ -167,29 +168,50 @@ fill_gso_buffer_flags (vlib_buffer_t * b0, struct virtio_net_hdr_v1 *hdr) } } + vnet_buffer (b0)->l2_hdr_offset = 0; + vnet_buffer (b0)->l3_hdr_offset = l2hdr_sz; if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4)) { ip4_header_t *ip4 = (ip4_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz); + vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4); l4_proto = ip4->protocol; b0->flags |= (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_OFFLOAD_IP_CKSUM); + b0->flags |= + (VNET_BUFFER_F_L2_HDR_OFFSET_VALID + | VNET_BUFFER_F_L3_HDR_OFFSET_VALID | + VNET_BUFFER_F_L4_HDR_OFFSET_VALID); } else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6)) { ip6_header_t *ip6 = (ip6_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz); + vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t); /* FIXME IPv6 EH traversal */ l4_proto = ip6->protocol; - b0->flags |= VNET_BUFFER_F_IS_IP6; + b0->flags |= (VNET_BUFFER_F_IS_IP6 | + VNET_BUFFER_F_L2_HDR_OFFSET_VALID + | VNET_BUFFER_F_L3_HDR_OFFSET_VALID | + VNET_BUFFER_F_L4_HDR_OFFSET_VALID); } if (l4_proto == IP_PROTOCOL_TCP) { b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM; + tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b0) + + vnet_buffer + (b0)->l4_hdr_offset); + l4_hdr_sz = tcp_header_bytes (tcp); + tcp->checksum = 0; } else if (l4_proto == IP_PROTOCOL_UDP) { b0->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; + udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b0) + + vnet_buffer + (b0)->l4_hdr_offset); + l4_hdr_sz = sizeof (*udp); + udp->checksum = 0; } } @@ -197,12 +219,14 @@ fill_gso_buffer_flags (vlib_buffer_t * b0, struct virtio_net_hdr_v1 *hdr) { ASSERT (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM); vnet_buffer2 (b0)->gso_size = hdr->gso_size; + vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz; b0->flags |= VNET_BUFFER_F_GSO | VNET_BUFFER_F_IS_IP4; } if (hdr->gso_type == VIRTIO_NET_HDR_GSO_TCPV6) { ASSERT (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM); vnet_buffer2 (b0)->gso_size = hdr->gso_size; + vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz; b0->flags |= VNET_BUFFER_F_GSO | VNET_BUFFER_F_IS_IP6; } } |