Hi Eliad, sorry for the late reply, I'm on vacation and enjoying Finland's great summer, 18 C and raining :) Eliad Peller <eliad@xxxxxxxxxx> writes: > On Mon, Jun 25, 2012 at 4:27 PM, Kalle Valo <kvalo@xxxxxxxxxx> wrote: >>> beacon_ies is needed only in order to extract the dtim >>> period. However, even if it's missing we can still enter >>> ps with dtim=1 (which also happens if the TIM ie is invalid). >>> >>> Most drivers don't use conf.max_sleep_period/ps_dtim_period >>> anyway, and this check prevents them from entering ps if >>> they don't have beacon (but only probe response), even though >>> the beacon is not needed at all. >> >> Does this increase the chances of accidentally using dtim 1 even though >> AP has dtim > 1? I'm just worried that it's difficult to detect cases >> when we are forcing dtim to 1 and nobody might not notice it. How often >> will this happen? >> > doesn't dtim=1 is still better than not entering ps at all? > i think the only bad effect of using dtim=1 (instead of greater value) > is wrt power saving. but entering psm with dtim=1 is still better than > not entering psm at all. Sure. I was just thinking ahead and trying to avoid future problems (ie. accidentally using dtim=1). -- Kalle Valo -- 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
