ethernet: fix coverity 218549

Check that the pointer is non-null before dereferencing it.

Type: fix
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
Change-Id: I611a1042d08bbe455dd09a4fa5711fe86c440240

diff --git a/src/vnet/ethernet/node.c b/src/vnet/ethernet/node.c
index 214e688..21346a8 100644 (file)
--- a/src/vnet/ethernet/node.c
+++ b/src/vnet/ethernet/node.c
@@ -225,7 +225,7 @@ identify_subint (ethernet_main_t * em,
       // A unicast packet arriving on an L3 interface must have a dmac
       // matching the interface mac. If interface has STATUS_L3 bit set
       // mac filter is already done.
-      if (!(*is_l2 || (ei->flags & ETHERNET_INTERFACE_FLAG_STATUS_L3)))
+      if (!(*is_l2 || (ei && (ei->flags & ETHERNET_INTERFACE_FLAG_STATUS_L3))))
        {
          u64 dmacs[2];
          u8 dmacs_bad[2];