pcapif: check that input callback is not NULL

8 years ago · a065b306df
1 changed files with 2 additions and 0 deletions
--- a/ports/win32/pcapif.c
+++ b/ports/win32/pcapif.c
@ -1031,6 +1031,8 @@ pcapif_init(struct netif *netif)
  local_index = ethernetif_index++;
  SYS_ARCH_UNPROTECT(lev);

+  LWIP_ASSERT("pcapif needs an input callback", netif->input != NULL);
+
  netif->name[0] = IFNAME0;
  netif->name[1] = (char)(IFNAME1 + local_index);
  netif->linkoutput = pcapif_low_level_output;