Author: weongyo
Date: Tue Jun 29 21:56:42 2010
New Revision: 209598
URL: http://svn.freebsd.org/changeset/base/209598
Log:
Initializes the ratectl for a node when the state is changed to RUN.
This prevents a kernel fault by dividing with zero because the initial
rate was 0 and didn't be initialized.
Tested by: Warren Block <wblock at wonkity.com>
MFC after: 3 days
Modified:
head/sys/dev/bwi/if_bwi.c
Modified: head/sys/dev/bwi/if_bwi.c
==============================================================================
--- head/sys/dev/bwi/if_bwi.c Tue Jun 29 21:52:40 2010 (r209597)
+++ head/sys/dev/bwi/if_bwi.c Tue Jun 29 21:56:42 2010 (r209598)
@@ -1769,6 +1769,7 @@ static int
bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct bwi_vap *bvp = BWI_VAP(vap);
+ const struct ieee80211_txparam *tp;
struct ieee80211com *ic= vap->iv_ic;
struct ifnet *ifp = ic->ic_ifp;
enum ieee80211_state ostate = vap->iv_state;
@@ -1822,6 +1823,11 @@ bwi_newstate(struct ieee80211vap *vap, e
sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
#endif
+ /* Initializes ratectl for a node. */
+ tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
+ if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE)
+ ieee80211_ratectl_node_init(vap->iv_bss);
+
callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
}
back:
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