X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Ftcp%2Ftcp_output.c;fp=src%2Fvnet%2Ftcp%2Ftcp_output.c;h=db42029e7b34c8e5cea373978749b02bca018501;hb=bc1640a5044e8b7a06c3cc6d41543198b81e610c;hp=cfdd1da9188100b3d5c6c8624a38f02625a6a111;hpb=2e3a79ff50dbb853059aee8c48610e3610f9c66f;p=vpp.git

diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index cfdd1da9188..db42029e7b3 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -613,11 +613,11 @@ tcp_buffer_make_reset (vlib_main_t *vm, vlib_buffer_t *b, u8 is_ip4)
 
   /* Zero all flags but free list index and trace flag */
   b->flags &= VLIB_BUFFER_NEXT_PRESENT - 1;
-  b->current_data = 0;
+  /* Make sure new tcp header comes after current ip */
+  b->current_data = ((u8 *) th - b->data) + sizeof (tcp_header_t);
   b->current_length = 0;
   b->total_length_not_including_first_buffer = 0;
   vnet_buffer (b)->tcp.flags = 0;
-  vlib_buffer_make_headroom (b, TRANSPORT_MAX_HDRS_LEN);
 
   /*
    * Add TCP and IP headers