devices: fix the l2 hdr offset in af_packet transmit side
Type: fix
af_packet transmit node uses header offsets to set the
appropriate metadata for packet with offload. But
l2_hdr_offset is not correctly set by previous node.
This patch makes use of curren_data field as l2_hdr_offset.
@@ -291,8 +291,7 @@ static_always_inline void
fill_gso_offload (vlib_buffer_t *b0, vnet_virtio_net_hdr_t *vnet_hdr)
{
vnet_buffer_oflags_t oflags = vnet_buffer (b0)->oflags;
- i16 l4_hdr_offset =
- vnet_buffer (b0)->l4_hdr_offset - vnet_buffer (b0)->l2_hdr_offset;
+ i16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset - b0->current_data;
if (b0->flags & VNET_BUFFER_F_IS_IP4)
{
ip4_header_t *ip4;
@@ -329,8 +328,7 @@ static_always_inline void
fill_cksum_offload (vlib_buffer_t *b0, vnet_virtio_net_hdr_t *vnet_hdr)
{
vnet_buffer_oflags_t oflags = vnet_buffer (b0)->oflags;
- i16 l4_hdr_offset =
- vnet_buffer (b0)->l4_hdr_offset - vnet_buffer (b0)->l2_hdr_offset;
+ i16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset - b0->current_data;
if (b0->flags & VNET_BUFFER_F_IS_IP4)
{
ip4_header_t *ip4;
