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authorDave Barach <dave@barachs.net>2017-06-29 09:30:15 -0400
committerFlorin Coras <florin.coras@gmail.com>2017-07-18 17:05:01 +0000
commit2c0a4f407f565d8dd33ff3a9fada346860d30ad2 (patch)
treefeef8e57bc4f7b434715bd04c9be218ce215bdd0 /src/vnet/tcp
parent758137a7b70806dc9ec7a28fbe1bc01bc7df2586 (diff)
TCP/UDP checksum offload API
Change-Id: I2cb6ce4e29813f6602b14e6e61713fb381fbcef8 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vnet/tcp')
-rw-r--r--src/vnet/tcp/tcp_output.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index f34eb797c77..35f3eba15e0 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -1485,7 +1485,12 @@ tcp46_output_inline (vlib_main_t * vm,
ip4_header_t *ih0;
ih0 = vlib_buffer_push_ip4 (vm, b0, &tc0->c_lcl_ip4,
&tc0->c_rmt_ip4, IP_PROTOCOL_TCP);
- th0->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ih0);
+ b0->flags |= VNET_BUFFER_F_IS_IP4 |
+ VNET_BUFFER_F_OFFLOAD_IP_CKSUM |
+ VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ vnet_buffer (b0)->l3_hdr_offset = (u8 *) ih0 - b0->data;
+ vnet_buffer (b0)->l4_hdr_offset = (u8 *) th0 - b0->data;
+ th0->checksum = 0;
}
else
{
@@ -1494,8 +1499,13 @@ tcp46_output_inline (vlib_main_t * vm,
ih0 = vlib_buffer_push_ip6 (vm, b0, &tc0->c_lcl_ip6,
&tc0->c_rmt_ip6, IP_PROTOCOL_TCP);
- th0->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b0, ih0,
- &bogus);
+
+ b0->flags |= VNET_BUFFER_F_IS_IP6 |
+ VNET_BUFFER_F_OFFLOAD_IP_CKSUM |
+ VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ vnet_buffer (b0)->l3_hdr_offset = (u8 *) ih0 - b0->data;
+ vnet_buffer (b0)->l4_hdr_offset = (u8 *) th0 - b0->data;
+ th0->checksum = 0;
ASSERT (!bogus);
}