ip: Fragmentation fixes

[vpp.git] / src / vnet / interface_output.h

diff --git a/src/vnet/interface_output.h b/src/vnet/interface_output.h
index 58f7f61..f1fa4d8 100644 (file)
--- a/src/vnet/interface_output.h
+++ b/src/vnet/interface_output.h
@@ -62,7 +62,6 @@ calc_checksums (vlib_main_t * vm, vlib_buffer_t * b)
 
   if (is_ip4)
     {
-      ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
       if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
        ip4->checksum = ip4_header_checksum (ip4);
       if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
@@ -71,7 +70,10 @@ calc_checksums (vlib_main_t * vm, vlib_buffer_t * b)
          th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
        }
       if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
-       uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+       {
+         uh->checksum = 0;
+         uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+       }
     }
   if (is_ip6)
     {