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Add KASSERT. The input point expects struct ether_header to be there.

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Now, I'm wondering whether it can be triggered by L2 encapsulation
protocols - they may not provide a contiguous area.
This commit is contained in:
maxv 2018-04-09 11:35:22 +00:00
parent ce5bc9fcd8
commit 00a2f9f8be
1 changed files with 3 additions and 2 deletions
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5
sys/net/if_ethersubr.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_ethersubr.c,v 1.261 2018/04/09 11:05:59 maxv Exp $ */
/* $NetBSD: if_ethersubr.c,v 1.262 2018/04/09 11:35:22 maxv Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@ -61,7 +61,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ethersubr.c,v 1.261 2018/04/09 11:05:59 maxv Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_ethersubr.c,v 1.262 2018/04/09 11:35:22 maxv Exp $");
#ifdef _KERNEL_OPT
#include "opt_inet.h"
@ -588,6 +588,7 @@ ether_input(struct ifnet *ifp, struct mbuf *m)
KASSERT(!cpu_intr_p());
KASSERT((m->m_flags & M_PKTHDR) != 0);
KASSERT(m->m_len >= sizeof(*eh));
if ((ifp->if_flags & IFF_UP) == 0) {
m_freem(m);