On Tue, Jul 27, 2010 at 08:12:10AM -0700, Simsek, Burak wrote: > Dear Luis, > > I have found out that you have worked on WoW for ath9k for a while. However, > in the wiki page of wireless.kernel.org the current state is written as > ongoing work. Can you please tell me whether you were successful while > implementing WoW. Is there anything that we could use? WoW worked for me but inconsistantly and at the time of writing the patches I had to do quite a lot of coordination with Johannes since he had a lot of API changes and his changes needed to get merged first. I also found quite a few issues in mac80211 back then but I believe we have resolved all of them by now so I would expect that if the same WoW-only patches to be rebased and tested we may get better results. I stopped working on the WoW stuff due to lack of time to keep testing them but the last series can be edited to remove all of the already merged stuff and test out the new stuff. The more challenging thing for me was to actually get a WoW enabled 802.11 card, these are not as popular as you would hope. The EEPROM would be modified when WoW is enabled but WoW requires some actual hardware mucking to allow for the PCI Wake signal which is typically blocked off. If the EEPROM has WoW enabled then the hardware mucking would have been done. To test WoW you also need to drop Network Manager and use the supplicant directly so that during suspend you remain associated. I should note that WoW will only work on non-WPA networks with ath9k due to the lack of hardware CPU, during suspend there is only power for the 802.11 hardware, the CPU on your box would be asleep but would be required for group key changes. The way I was thinking of doing this was to only enable WoW through cfg80211 for ath9k if and only if you are associated and you are connected to a non WPA network. WoW would work with encryption on our USB devices where there is a CPU though. You can find my last series here: http://www.mk.kernel.org/pub/linux/kernel/people/mcgrof/patches/wow-07-21.patch http://www.mk.kernel.org/pub/linux/kernel/people/mcgrof/patches/iw-add-wow.patch If you manage to do what I noted above, get an actual WoW enabled card, and it works reliably I'd gladly welcome and ACK the patches :) Luis -- 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
