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authorMohsin Kazmi <sykazmi@cisco.com>2019-10-22 13:33:13 +0200
committerAndrew Yourtchenko <ayourtch@gmail.com>2019-12-05 00:44:06 +0000
commit72e7312af04bf8f6ecbc8ce70fe1a6e2ad8852ec (patch)
tree67343be3386884743d6a079a9b9d54738971f420 /src/vnet/devices
parent1043fd38d83434d6c4e002c5354a30027988fbfa (diff)
gso: add protocol header parser
Type: feature Change-Id: I7c6be2b96d19f82be237f6159944f3164ea512d0 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/devices')
-rw-r--r--src/vnet/devices/virtio/node.c43
1 files changed, 10 insertions, 33 deletions
diff --git a/src/vnet/devices/virtio/node.c b/src/vnet/devices/virtio/node.c
index ec28fbb5e08..fc2317ecc69 100644
--- a/src/vnet/devices/virtio/node.c
+++ b/src/vnet/devices/virtio/node.c
@@ -145,11 +145,11 @@ 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)
{
- ethernet_header_t *eh = (ethernet_header_t *) b0->data;
+ ethernet_header_t *eh =
+ (ethernet_header_t *) vlib_buffer_get_current (b0);
u16 ethertype = clib_net_to_host_u16 (eh->type);
u16 l2hdr_sz = sizeof (ethernet_header_t);
@@ -167,47 +167,29 @@ 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 *) (b0->data + l2hdr_sz);
- vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4);
+ ip4_header_t *ip4 =
+ (ip4_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
l4_proto = ip4->protocol;
b0->flags |=
- (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID
- | VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
- VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
- b0->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
+ (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_OFFLOAD_IP_CKSUM);
}
else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6))
{
- ip6_header_t *ip6 = (ip6_header_t *) (b0->data + l2hdr_sz);
+ ip6_header_t *ip6 =
+ (ip6_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
/* FIXME IPv6 EH traversal */
- vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t);
l4_proto = ip6->protocol;
- 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);
+ b0->flags |= VNET_BUFFER_F_IS_IP6;
}
if (l4_proto == IP_PROTOCOL_TCP)
{
b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
- tcp_header_t *tcp = (tcp_header_t *) (b0->data +
- 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 *) (b0->data +
- vnet_buffer
- (b0)->l4_hdr_offset);
- l4_hdr_sz = sizeof (*udp);
- udp->checksum = 0;
}
}
@@ -215,21 +197,16 @@ 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;
- b0->flags |= VNET_BUFFER_F_IS_IP4;
+ 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;
- b0->flags |= VNET_BUFFER_F_IS_IP6;
+ b0->flags |= VNET_BUFFER_F_GSO | VNET_BUFFER_F_IS_IP6;
}
}
-
static_always_inline uword
virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame, virtio_if_t * vif, u16 qid,