On Sun, 2009-04-05 at 11:36 +0200, Michael Buesch wrote: > On Sunday 05 April 2009 11:29:38 Michael Buesch wrote: > > On Sunday 05 April 2009 11:23:59 Jaswinder Singh Rajput wrote: > > > With latest linus tree I am getting, .config file attached: > > > > > > [ 22.895051] r8169: eth0: link down > > > [ 22.897564] ADDRCONF(NETDEV_UP): eth0: link is not ready > > > [ 22.928047] ADDRCONF(NETDEV_UP): wlan0: link is not ready > > > [ 22.982292] libvirtd used greatest stack depth: 4200 bytes left > > > [ 63.709879] wlan0: authenticate with AP 00:11:95:9e:df:f6 > > > [ 63.712096] wlan0: authenticated > > > [ 63.712127] wlan0: associate with AP 00:11:95:9e:df:f6 > > > [ 63.726831] wlan0: RX AssocResp from 00:11:95:9e:df:f6 (capab=0x471 status=0 aid=1) > > > [ 63.726855] wlan0: associated > > > [ 63.730093] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready > > > [ 74.296087] wlan0: no IPv6 routers present > > > [ 79.349044] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 119.358200] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 179.354292] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 259.366044] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 359.348292] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 361.953459] packagekitd used greatest stack depth: 4160 bytes left > > > [ 478.824258] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 598.813343] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 718.817292] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 838.824567] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 958.815402] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 1078.848434] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 1198.822913] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 1318.824931] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 1438.814157] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 1558.827336] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 1678.823011] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 1798.830589] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 1918.828044] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 2038.827224] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 2116.517152] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 2158.840243] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > [ 2278.827427] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request > > > > > > I think this message should only show if CONFIG_MAC80211_VERBOSE_DEBUG is set. > > It's kind of expected that we lose a beacon once in a while, so we shouldn't print > > verbose messages to the kernel log (even if they are KERN_DEBUG). > > > > And besides that, I think one can easily remotely trigger this message and flood the logs. > > So it should probably _also_ be ratelimited. > > > I tested you patch: when CONFIG_MAC80211_VERBOSE_DEBUG was not defined: [ 21.928047] r8169: eth0: link down [ 21.930774] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 21.957007] ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 59.872337] wlan0: authenticate with AP 00:11:95:9e:df:f6 [ 59.874350] wlan0: authenticated [ 59.874350] wlan0: associate with AP 00:11:95:9e:df:f6 [ 59.893103] wlan0: RX AssocResp from 00:11:95:9e:df:f6 (capab=0x471 status=0 aid=1) [ 59.893135] wlan0: associated [ 59.896260] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.409313] wlan0: no IPv6 routers present when CONFIG_MAC80211_VERBOSE_DEBUG defined: [ 22.851052] r8169: eth0: link down [ 22.854049] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 22.885982] ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 61.043261] wlan0: authenticate with AP 00:11:95:9e:df:f6 [ 61.044997] wlan0: authenticated [ 61.045016] wlan0: associate with AP 00:11:95:9e:df:f6 [ 61.059901] wlan0: RX AssocResp from 00:11:95:9e:df:f6 (capab=0x471 status=0 aid=1) [ 61.059922] wlan0: associated [ 61.060124] wlan0: switched to short barker preamble (BSSID=00:11:95:9e:df:f6) [ 61.060141] wlan0: switched to short slot time (BSSID=00:11:95:9e:df:f6) [ 61.064651] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.211042] wlan0: no IPv6 routers present [ 79.323009] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 119.333646] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 179.332725] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 259.330506] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 359.311615] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 479.334949] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 599.330222] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 719.001652] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 838.994788] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 958.993262] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 1079.024024] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 1199.023672] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request [ 1319.021355] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request .. So net_ratelimit() does not make any difference in my case where rate is 120 seconds. -- JSR > Something like this: > > > Signed-off-by: Michael Buesch <mb@xxxxxxxxx> > > Index: wireless-testing/net/mac80211/mlme.c > =================================================================== > --- wireless-testing.orig/net/mac80211/mlme.c 2009-04-05 11:32:16.000000000 +0200 > +++ wireless-testing/net/mac80211/mlme.c 2009-04-05 11:35:57.000000000 +0200 > @@ -945,9 +945,13 @@ void ieee80211_beacon_loss_work(struct w > u.mgd.beacon_loss_work); > struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; > > - printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM " > - "- sending probe request\n", sdata->dev->name, > - sdata->u.mgd.bssid); > +#ifdef CONFIG_MAC80211_VERBOSE_DEBUG > + if (net_ratelimit()) { > + printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM " > + "- sending probe request\n", sdata->dev->name, > + sdata->u.mgd.bssid); > + } > +#endif > > ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; > ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, > @@ -1007,9 +1011,13 @@ static void ieee80211_associated(struct > (local->hw.conf.flags & IEEE80211_CONF_PS)) && > time_after(jiffies, > ifmgd->last_beacon + IEEE80211_MONITORING_INTERVAL)) { > - printk(KERN_DEBUG "%s: beacon loss from AP %pM " > - "- sending probe request\n", > - sdata->dev->name, ifmgd->bssid); > +#ifdef CONFIG_MAC80211_VERBOSE_DEBUG > + if (net_ratelimit()) { > + printk(KERN_DEBUG "%s: beacon loss from AP %pM " > + "- sending probe request\n", > + sdata->dev->name, ifmgd->bssid); > + } > +#endif > ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; > ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, > ifmgd->ssid_len, NULL, 0); > -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html