On Sun, Sep 28, 2008 at 7:26 PM, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > On Sun, 2008-09-28 at 19:24 +0300, Tomas Winkler wrote: > >> >> This patch makes mac80211 able to send action frames when toggling >> >> (SM PS) Spacial Multiplexing Power Save mode. > >> > Why is the driver managing the PS mode to start with? >> >> What PS mode, SM PS mode or traditional PS mode? Please be more >> verbose so I don't have to guess what you mean. > > This was mostly concerned about SM PS mode so that's what I'm asking. Hmm, I hoped that two examples I gave explains that. Now I see I missed one sentence in the first example, the movement between PS mode and CAM mode can be actually controlled by mac80211 it just need to convey to AP MS PS mode supported by HW. Bottom line this is dependent on HW capabilities. Second example, only low level driver is running calibrations and knows if it has all rx chains available. The possibility is that not all platforms connect all antennas or physical environment between AP and STA cause some of the antennas not affective we may propagate rx chain status to mac80211 but if this is not opening too much guts. Sometimes it's just hard to keep a clean cut. I have two more patches for these to example of course... >I don't actually know what that is anyway though, hence the question. Actually this is one of more understandable part of the spec. We > keep adding API in mac80211 and nobody really knows when to call it. > Maybe you should (maybe team up with Atheros for it) write a "HT > hardware with mac80211" chapter in the documentation? Yes we should. Tomas -- 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
