Author: weongyo
Date: Thu Jul 8 19:40:09 2010
New Revision: 209822
URL: http://svn.freebsd.org/changeset/base/209822
Log:
MFC r209598:
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>
Modified:
stable/8/sys/dev/bwi/if_bwi.c
Directory Properties:
stable/8/sys/ (props changed)
stable/8/sys/amd64/include/xen/ (props changed)
stable/8/sys/cddl/contrib/opensolaris/ (props changed)
stable/8/sys/contrib/dev/acpica/ (props changed)
stable/8/sys/contrib/pf/ (props changed)
stable/8/sys/dev/xen/xenpci/ (props changed)
Modified: stable/8/sys/dev/bwi/if_bwi.c
==============================================================================
--- stable/8/sys/dev/bwi/if_bwi.c Thu Jul 8 19:36:38 2010
(r209821)
+++ stable/8/sys/dev/bwi/if_bwi.c Thu Jul 8 19:40:09 2010
(r209822)
@@ -1764,6 +1764,7 @@ 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;
@@ -1817,6 +1818,11 @@ 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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