svn commit: r187835 - head/sys/net80211

[Sam Leffler]

Author: sam
Date: Wed Jan 28 18:39:23 2009
New Revision: 187835
URL: http://svn.freebsd.org/changeset/base/187835

Log:
  add an assert to verify the number of channels returned by ic_getradiocaps
  correlates with the size of the channel array passed down
  
  might want to promote this to be always present to catch for driver errors

Modified:
  head/sys/net80211/ieee80211_ioctl.c

Modified: head/sys/net80211/ieee80211_ioctl.c
==============================================================================
--- head/sys/net80211/ieee80211_ioctl.c	Wed Jan 28 18:37:46 2009	(r187834)
+++ head/sys/net80211/ieee80211_ioctl.c	Wed Jan 28 18:39:23 2009	(r187835)
@@ -715,6 +715,8 @@ ieee80211_ioctl_getdevcaps(struct ieee80
 	dc->dc_htcaps = ic->ic_htcaps;
 	ci = &dc->dc_chaninfo;
 	ic->ic_getradiocaps(ic, maxchans, &ci->ic_nchans, ci->ic_chans);
+	KASSERT(ci->ic_nchans <= maxchans,
+	    ("nchans %d maxchans %d", ci->ic_nchans, maxchans));
 	ieee80211_sort_channels(ci->ic_chans, ci->ic_nchans);
 	error = copyout(dc, ireq->i_data, IEEE80211_DEVCAPS_SPACE(dc));
 	free(dc, M_TEMP);