diff options
| author |   Mohsin Kazmi <sykazmi@cisco.com> | 2019-10-22 13:33:13 +0200 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2019-12-05 00:44:06 +0000 |
| commit | 72e7312af04bf8f6ecbc8ce70fe1a6e2ad8852ec (patch) | |
| tree | 67343be3386884743d6a079a9b9d54738971f420 /src/vnet/pg/input.c | |
| parent | 1043fd38d83434d6c4e002c5354a30027988fbfa (diff) | |
gso: add protocol header parser
Type: feature
Change-Id: I7c6be2b96d19f82be237f6159944f3164ea512d0
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/pg/input.c')
| -rw-r--r-- | src/vnet/pg/input.c | 38 |
1 files changed, 9 insertions, 29 deletions
diff --git a/src/vnet/pg/input.c b/src/vnet/pg/input.c index c47dfe270e7..f4f6bd46fe7 100644 --- a/src/vnet/pg/input.c +++ b/src/vnet/pg/input.c @@ -1535,9 +1535,9 @@ fill_gso_buffer_flags (vlib_main_t * vm, u32 * buffers, u32 n_buffers, { vlib_buffer_t *b0 = vlib_get_buffer (vm, buffers[i]); u8 l4_proto = 0; - u8 l4_hdr_sz = 0; - 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); @@ -1555,50 +1555,30 @@ fill_gso_buffer_flags (vlib_main_t * vm, u32 * buffers, u32 n_buffers, } } - 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; - vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz; + b0->flags |= (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM | VNET_BUFFER_F_GSO); vnet_buffer2 (b0)->gso_size = packet_data_size; - b0->flags |= VNET_BUFFER_F_GSO; } 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); - vnet_buffer2 (b0)->gso_l4_hdr_sz = sizeof (*udp); - udp->checksum = 0; } } } |