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hookup the parent device's if_input and if_output to stub routines

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to catch unintended use (one might argue about if_output but it's
behaviour is ill-defined without vap context)

Noticed by:	Paul B. Mahol
This commit is contained in:
Sam Leffler 2008-04-25 19:45:42 +00:00
parent 48c89a5a29
commit 0095127918
1 changed files with 19 additions and 0 deletions
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19
sys/net80211/ieee80211.c
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@ -181,6 +181,22 @@ null_update_promisc(struct ifnet *ifp)
if_printf(ifp, "need promiscuous mode update callback\n");
}
static int
null_output(struct ifnet *ifp, struct mbuf *m,
struct sockaddr *dst, struct rtentry *rt0)
{
if_printf(ifp, "discard raw packet\n");
m_freem(m);
return EIO;
}
static void
null_input(struct ifnet *ifp, struct mbuf *m)
{
if_printf(ifp, "if_input should not be called\n");
m_freem(m);
}
/*
* Attach/setup the common net80211 state. Called by
* the driver on attach to prior to creating any vap's.
@ -225,6 +241,9 @@ ieee80211_ifattach(struct ieee80211com *ic)
if_attach(ifp);
ifp->if_mtu = IEEE80211_MTU_MAX;
ifp->if_broadcastaddr = ieee80211broadcastaddr;
ifp->if_output = null_output;
ifp->if_input = null_input; /* just in case */
ifp->if_resolvemulti = NULL; /* NB: callers check */
ifa = ifaddr_byindex(ifp->if_index);
KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));