Hello Toke, Thanks for the review. Please see my inline comments. Ming > -----Original Message----- > From: Toke Høiland-Jørgensen <toke@xxxxxxxxxx> > Sent: Friday, November 15, 2019 3:08 AM > To: Ming Chen <ming032217@xxxxxxxxx>; Johannes Berg > <johannes@xxxxxxxxxxxxxxxx> > Cc: linux-wireless@xxxxxxxxxxxxxxx; Ming Chen > <Ming.Chen@xxxxxxxxxxxxxx> > Subject: Re: [PATCH v3] mac80211: Drop the packets whose source or > destination mac address is empty > > Ming Chen <ming032217@xxxxxxxxx> writes: > > > We occasionally found ath9k could receive some packets from Linux IP > > stack with empty source and destination mac address, > > How does that happen? [Ming Chen] To be honest, I not quite sure how it happen. When the radio works as a wireless client, I cloud occasionally reproduce this issue by disabling DHCP and configure a static IP for wireless client, and also try to ping to its gateway without break. My kernel version is 4.14. > > > which will result in the driver cannot find the station node in TX > > complete. And thus, the driver will complete this buffer but without > > updating the block ack window. > > If it can't find the station, how is the packet transmitted (and affecting the BA > window) in the first place? [Ming Chen] Please see the new changelog of version 4. > > -Toke