diff options
| author |   Mohsin Kazmi <sykazmi@cisco.com> | 2022-10-17 18:27:21 +0000 |
|---|---|---|
| committer | Mohsin Kazmi <sykazmi@cisco.com> | 2022-10-17 18:32:11 +0000 |
| commit | cacde1212793768cec608ef15c8a530fd44d0715 (patch) | |
| tree | daa8b0aa6d5ec39c5e57b7fd11f6ecd375e771bd /src/vnet/devices | |
| parent | 79f6dbac755573d58c3a27a732f24fe65f411831 (diff) | |
devices: fix the header offsets in af_packet
Type: fix
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Change-Id: I7fc645c46d285ceb13903f5835c99e9b6a9e5b07
Diffstat (limited to 'src/vnet/devices')
| -rw-r--r-- | src/vnet/devices/af_packet/device.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/src/vnet/devices/af_packet/device.c b/src/vnet/devices/af_packet/device.c index 74bc1c8c42c..1d14c9b8dcf 100644 --- a/src/vnet/devices/af_packet/device.c +++ b/src/vnet/devices/af_packet/device.c @@ -235,29 +235,37 @@ 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; if (b0->flags & VNET_BUFFER_F_IS_IP4) { ip4_header_t *ip4; vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; vnet_hdr->gso_size = vnet_buffer2 (b0)->gso_size; - vnet_hdr->hdr_len = - vnet_buffer (b0)->l4_hdr_offset + vnet_buffer2 (b0)->gso_l4_hdr_sz; + vnet_hdr->hdr_len = l4_hdr_offset + vnet_buffer2 (b0)->gso_l4_hdr_sz; vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr->csum_start = vnet_buffer (b0)->l4_hdr_offset; // 0x22; + vnet_hdr->csum_start = l4_hdr_offset; // 0x22; vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum); ip4 = (ip4_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset); if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM) ip4->checksum = ip4_header_checksum (ip4); + tcp_header_t *tcp = + (tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset); + tcp->checksum = ip4_pseudo_header_cksum (ip4); } else if (b0->flags & VNET_BUFFER_F_IS_IP6) { + ip6_header_t *ip6; vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; vnet_hdr->gso_size = vnet_buffer2 (b0)->gso_size; - vnet_hdr->hdr_len = - vnet_buffer (b0)->l4_hdr_offset + vnet_buffer2 (b0)->gso_l4_hdr_sz; + vnet_hdr->hdr_len = l4_hdr_offset + vnet_buffer2 (b0)->gso_l4_hdr_sz; vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr->csum_start = vnet_buffer (b0)->l4_hdr_offset; // 0x36; + vnet_hdr->csum_start = l4_hdr_offset; // 0x36; vnet_hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum); + ip6 = (ip6_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset); + tcp_header_t *tcp = + (tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset); + tcp->checksum = ip6_pseudo_header_cksum (ip6); } } @@ -265,6 +273,8 @@ 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; if (b0->flags & VNET_BUFFER_F_IS_IP4) { ip4_header_t *ip4; @@ -272,7 +282,7 @@ fill_cksum_offload (vlib_buffer_t *b0, vnet_virtio_net_hdr_t *vnet_hdr) if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM) ip4->checksum = ip4_header_checksum (ip4); vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr->csum_start = 0x22; + vnet_hdr->csum_start = l4_hdr_offset; if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM) { tcp_header_t *tcp = @@ -292,7 +302,7 @@ fill_cksum_offload (vlib_buffer_t *b0, vnet_virtio_net_hdr_t *vnet_hdr) { ip6_header_t *ip6; vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr->csum_start = 0x36; + vnet_hdr->csum_start = l4_hdr_offset; ip6 = (ip6_header_t *) (b0->data + vnet_buffer (b0)->l3_hdr_offset); if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM) { |