Youghandhar Chintala <youghand@xxxxxxxxxxxxxx> wrote: > Currently after the hardware restart triggered from the driver, > the station interface connection remains intact, since a disconnect > trigger is not sent to userspace. This can lead to a problem in > targets where the wifi mac sequence is added by the firmware. > > After the target restart, its wifi mac sequence number gets > reset to zero. Hence AP to which our device is connected will receive > frames with a wifi mac sequence number jump to the past, thereby > resulting in the AP dropping all these frames, until the frame > arrives with a wifi mac sequence number which AP was expecting. > > To avoid such frame drops, its better to trigger a station disconnect > upon target hardware restart which can be done with API > ieee80211_reconfig_disconnect exposed to mac80211. > > The other targets are not affected by this change, since the hardware > params flag is not set. > > Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1 > Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1 > Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00048 > > Signed-off-by: Youghandhar Chintala <youghand@xxxxxxxxxxxxxx> > Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. 2c3fc50591ff ath10k: Trigger sta disconnect on hardware restart -- https://patchwork.kernel.org/project/linux-wireless/patch/20220315082944.12406-3-youghand@xxxxxxxxxxxxxx/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
