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authorSrikanth A <srakula@cisco.com>2019-10-02 17:48:58 -0700
committerJohn Lo <loj@cisco.com>2019-10-10 16:37:40 +0000
commit02833ff3294f4abbd8e3d52b38446e0f8f533ffc (patch)
treee2e9de14d3939938e502347723006f7bb374a02d /src/vnet/ip/ip6.h
parent8a047ed741072bdb8d93b0841473eae06ae3c9d0 (diff)
tcp: custom checksum calculations for Ipv4/Ipv6
Type: feature Based on the configuration, we can disable checksum offload capability and calculate checksum while pushing the TCP & IP header. This saves some cycles when VPP stack is used in legacy hardware devices. Signed-off-by: Srikanth A <srakula@cisco.com> Change-Id: Ic1b3fcf3040917e47ee65263694ebf7437ac5668 (cherry picked from commit 3642782a2748503f5b5ccf89d1575c1d489948ef)
Diffstat (limited to 'src/vnet/ip/ip6.h')
-rw-r--r--src/vnet/ip/ip6.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/vnet/ip/ip6.h b/src/vnet/ip/ip6.h
index 810fd70ff0c..94c5080a0aa 100644
--- a/src/vnet/ip/ip6.h
+++ b/src/vnet/ip/ip6.h
@@ -683,7 +683,8 @@ vlib_buffer_push_ip6 (vlib_main_t * vm, vlib_buffer_t * b,
sizeof (ip6h->src_address));
clib_memcpy_fast (ip6h->dst_address.as_u8, dst->as_u8,
sizeof (ip6h->src_address));
- b->flags |= VNET_BUFFER_F_IS_IP6;
+ vnet_buffer (b)->l3_hdr_offset = (u8 *) ip6h - b->data;
+ b->flags |= VNET_BUFFER_F_IS_IP6 | VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
return ip6h;
}