Sanity check on dequeued mbufs, also keep track of correct interface

for statistics purposes.

diff --git a/sys/net/if_enc.c b/sys/net/if_enc.c
index 329a342..74cf10e 100644 (file)
--- a/sys/net/if_enc.c
+++ b/sys/net/if_enc.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: if_enc.c,v 1.28 2000/04/12 18:05:47 angelos Exp $     */
+/*     $OpenBSD: if_enc.c,v 1.29 2000/04/18 06:35:02 angelos Exp $     */
 
 /*
  * The authors of this code are John Ioannidis (ji@tla.org),
@@ -239,7 +239,15 @@ struct ifnet *ifp;
 
        if (m == NULL) /* Empty queue */
          return;
+ 
+       /* Sanity check */
+       if ((m->m_flags & M_PKTHDR) == 0)
+       {
+           m_freem(m);
+           continue;
+       }
 
+       m->m_pkthdr.rcvif = ifp;
        mp = NULL;
 
        /* Encapsulate in etherip or ip-in-ip, depending on interface flag */