Date: Tue, 29 Jun 2010 21:56:42 +0000 (UTC) From: Weongyo Jeong <weongyo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r209598 - head/sys/dev/bwi Message-ID: <201006292156.o5TLugpT047853@svn.freebsd.org>
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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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