commit fdbc38249a8c672937a74667dcfaafa2cfd292e7
author Florin Coras <fcoras@cisco.com> Thu Jul 27 00:34:12 2017 -0700
committer Dave Barach <openvpp@barachs.net> Wed Aug 02 00:03:45 2017 +0000
tree 266d4b90330e508163c560ba01226c3248d5a39c
parent a0a908f1dfb679c384ab34ee3c1a2a63ba2448df

Make ip csum configurable in vlib buffer functions

Also fixes csum computation for lisp control plane 4o6 encapsulated control
messages.

Change-Id: I991e0b5c0d16dc51e0b5bdc79e1d752270b34765
Signed-off-by: Florin Coras <fcoras@cisco.com>

src/vnet/ip/ip4.h

diff --git a/src/vnet/ip/ip4.h b/src/vnet/ip/ip4.h
index 872b516..8f9a8e2 100644
--- a/src/vnet/ip/ip4.h
+++ b/src/vnet/ip/ip4.h
@@ -329,7 +329,8 @@
  */
 always_inline void *
 vlib_buffer_push_ip4 (vlib_main_t * vm, vlib_buffer_t * b,
-		      ip4_address_t * src, ip4_address_t * dst, int proto)
+		      ip4_address_t * src, ip4_address_t * dst, int proto,
+		      u8 csum_offload)
 {
   ip4_header_t *ih;
 
@@ -348,7 +349,7 @@
   ih->dst_address.as_u32 = dst->as_u32;
 
   /* Offload ip4 header checksum generation */
-  if (1)
+  if (csum_offload)
     {
       ih->checksum = 0;
       b->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM | VNET_BUFFER_F_IS_IP4;