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Put a check for an impossible case inside '#ifdef DIAGNOSTIC'.

This commit is contained in:
mycroft 2004-07-30 17:45:21 +00:00
parent 85e28ec5ee
commit 8e9a02ab5e
1 changed files with 8 additions and 6 deletions
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14
sys/net80211/ieee80211_input.c
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@ -1,4 +1,4 @@
/* $NetBSD: ieee80211_input.c,v 1.33 2004/07/29 22:28:05 mycroft Exp $ */
/* $NetBSD: ieee80211_input.c,v 1.34 2004/07/30 17:45:21 mycroft Exp $ */
/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
@ -35,7 +35,7 @@
#ifdef __FreeBSD__
__FBSDID("$FreeBSD: src/sys/net80211/ieee80211_input.c,v 1.20 2004/04/02 23:35:24 sam Exp $");
#else
__KERNEL_RCSID(0, "$NetBSD: ieee80211_input.c,v 1.33 2004/07/29 22:28:05 mycroft Exp $");
__KERNEL_RCSID(0, "$NetBSD: ieee80211_input.c,v 1.34 2004/07/30 17:45:21 mycroft Exp $");
#endif
#include "opt_inet.h"
@ -964,16 +964,18 @@ ieee80211_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0,
* o adhoc mode: to discover neighbors
* o hostap mode: for passive scanning of neighbor APs
* o when scanning
* Frames otherwise received are discarded.
* In other words, in all modes other than monitor (which
* does not process incoming packets) and adhoc-demo (which
* does not use management frames at all).
*/
#ifdef DIAGNOSTIC
if (ic->ic_opmode != IEEE80211_M_STA &&
ic->ic_opmode != IEEE80211_M_IBSS &&
ic->ic_opmode != IEEE80211_M_HOSTAP &&
ic->ic_state != IEEE80211_S_SCAN) {
/* XXX: may be useful for background scan */
ic->ic_stats.is_rx_mgtdiscard++;
return;
panic("%s: impossible", __func__);
}
#endif
/*
* beacon/probe response frame format
* [8] time stamp