X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=vnet%2Fvnet%2Fip%2Fip4.h;h=f005522bb7a9e3b3c0739051d2994412c5e2561b;hb=d076f19b5e119265d995a031707c8d78608c439f;hp=c01006ea590c8e132e9157bc9d201e97c2bafca1;hpb=5b7a563ff0a39b74a0f037572b7709e3c9aa5cf2;p=vpp.git

diff --git a/vnet/vnet/ip/ip4.h b/vnet/vnet/ip/ip4.h
index c01006ea590..f005522bb7a 100644
--- a/vnet/vnet/ip/ip4.h
+++ b/vnet/vnet/ip/ip4.h
@@ -237,13 +237,16 @@ ip4_unaligned_destination_matches_route (ip4_main_t * im,
 					 uword dest_length)
 { return 0 == ((clib_mem_unaligned (&key->data_u32, u32) ^ dest->data_u32) & im->fib_masks[dest_length]); }
 
-always_inline void
+always_inline int
 ip4_src_address_for_packet (ip4_main_t * im, vlib_buffer_t * p, ip4_address_t * src, u32 sw_if_index)
 {
   ip_lookup_main_t * lm = &im->lookup_main;
   ip_interface_address_t * ia = ip_interface_address_for_packet (lm, p, sw_if_index);
+  if (ia == NULL)
+    return -1;
   ip4_address_t * a = ip_interface_address_get_address (lm, ia);
   *src = a[0];
+  return 0;
 }
 
 /* Find interface address which matches destination. */