Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx> wrote: > From: Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx> > > Fetch target operating channel during potential radar detection when > the interface is just brought up, but no channel is assigned from > userspace. In this scenario rx_channel may not be having a valid pointer > hence fetch the target operating channel to avoid warnings as below > which can be triggered by the commands with DFS testing over longer run > > comamnds: > iw wlan1 set type mesh > ifconfig wlan1 up (valid tgt_oper_chan only) > iw wlan1 cac trigger freq 5260 HT20 (valid rx_channel, tgt_oper_chan) > iw wlan1 cac trigger freq 5280 HT20 > iw wlan1 cac trigger freq 5300 HT20 > > Once the CAC expires, current channel context will be removed and > we are only left with the fallback option of using 'target operating > channel' > > Firmware and driver log: > ath: phy1: DFS: radar found on freq=5300: id=1, pri=1125, count=5, > count_false=4 > ath: phy1: DFS: radar found on freq=5260: id=5, pri=3151, count=6, > count_false=11 > ath: phy1: DFS: radar found on freq=5280: id=1, pri=1351, count=6, > count_false=4 > ath: phy1: DFS: radar found on freq=5300: id=1, pri=1125, count=5, > count_false=4 > ath10k_pci 0001:01:00.0: failed to derive channel for radar pulse, > treating as radar > ath10k_pci 0001:01:00.0: failed to derive channel for radar pulse, > treating as radar > > Call trace: > > WARNING: CPU: 1 PID: 2145 at > backports-20161201-3.14.77-9ab3068/net/wireless/chan.c:265 > cfg80211_set_dfs_state+0x3c/0x88 [cfg80211]() > > Workqueue: phy1 ieee80211_dfs_radar_detected_work > [mac80211] > [<c0320770>] (warn_slowpath_null) from [<bf79b90c>] > (cfg80211_set_dfs_state+0x3c/0x88 [cfg80211]) > [<bf79b90c>] (cfg80211_set_dfs_state [cfg80211]) from > [<bf79697c>] (cfg80211_radar_event+0xc4/0x140 [cfg80211]) > [<bf79697c>] (cfg80211_radar_event [cfg80211]) from > [<bf83c058>] (ieee80211_dfs_radar_detected_work+0xa8/0xb4 [mac80211]) > [<bf83c058>] (ieee80211_dfs_radar_detected_work > [mac80211]) from [<c0339518>] (process_one_work+0x298/0x4a4) > > Signed-off-by: Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. a28f6f27a88f ath10k: fix fetching channel during potential radar detection -- https://patchwork.kernel.org/patch/9610979/ Documentation about submitting wireless patches and checking status from patchwork: https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
