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-rw-r--r--src/vnet/devices/virtio/device.c21
1 files changed, 10 insertions, 11 deletions
diff --git a/src/vnet/devices/virtio/device.c b/src/vnet/devices/virtio/device.c
index ec5cdbd7bdd..e97da1d4204 100644
--- a/src/vnet/devices/virtio/device.c
+++ b/src/vnet/devices/virtio/device.c
@@ -309,12 +309,13 @@ set_checksum_offsets (vlib_buffer_t *b, vnet_virtio_net_hdr_v1_t *hdr,
const int is_l2)
{
vnet_buffer_oflags_t oflags = vnet_buffer (b)->oflags;
-
+ i16 l4_hdr_offset =
+ vnet_buffer (b)->l4_hdr_offset - vnet_buffer (b)->l2_hdr_offset;
if (b->flags & VNET_BUFFER_F_IS_IP4)
{
ip4_header_t *ip4;
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
- hdr->csum_start = vnet_buffer (b)->l4_hdr_offset; // 0x22;
+ hdr->csum_start = l4_hdr_offset; // 0x22;
/*
* virtio devices do not support IP4 checksum offload. So driver takes
@@ -347,7 +348,7 @@ set_checksum_offsets (vlib_buffer_t *b, vnet_virtio_net_hdr_v1_t *hdr,
{
ip6_header_t *ip6;
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
- hdr->csum_start = vnet_buffer (b)->l4_hdr_offset; // 0x36;
+ hdr->csum_start = l4_hdr_offset; // 0x36;
ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
/*
@@ -376,17 +377,17 @@ set_gso_offsets (vlib_buffer_t *b, vnet_virtio_net_hdr_v1_t *hdr,
const int is_l2)
{
vnet_buffer_oflags_t oflags = vnet_buffer (b)->oflags;
+ i16 l4_hdr_offset =
+ vnet_buffer (b)->l4_hdr_offset - vnet_buffer (b)->l2_hdr_offset;
if (b->flags & VNET_BUFFER_F_IS_IP4)
{
ip4_header_t *ip4;
hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4;
hdr->gso_size = vnet_buffer2 (b)->gso_size;
- hdr->hdr_len = vnet_buffer (b)->l4_hdr_offset -
- vnet_buffer (b)->l2_hdr_offset +
- vnet_buffer2 (b)->gso_l4_hdr_sz;
+ hdr->hdr_len = l4_hdr_offset + vnet_buffer2 (b)->gso_l4_hdr_sz;
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
- hdr->csum_start = vnet_buffer (b)->l4_hdr_offset; // 0x22;
+ hdr->csum_start = l4_hdr_offset; // 0x22;
hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
/*
@@ -400,11 +401,9 @@ set_gso_offsets (vlib_buffer_t *b, vnet_virtio_net_hdr_v1_t *hdr,
{
hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
hdr->gso_size = vnet_buffer2 (b)->gso_size;
- hdr->hdr_len = vnet_buffer (b)->l4_hdr_offset -
- vnet_buffer (b)->l2_hdr_offset +
- vnet_buffer2 (b)->gso_l4_hdr_sz;
+ hdr->hdr_len = l4_hdr_offset + vnet_buffer2 (b)->gso_l4_hdr_sz;
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
- hdr->csum_start = vnet_buffer (b)->l4_hdr_offset; // 0x36;
+ hdr->csum_start = l4_hdr_offset; // 0x36;
hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
}
}