On Thu, 2012-12-13 at 14:38 -0800, Luis R. Rodriguez wrote: > On Thu, Dec 6, 2012 at 8:53 AM, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > > - /* TODO: missing regulatory check on 80/160 bandwidth */ > > + /* > > + * TODO: What if there are only certain 80/160/80+80 MHz channels > > + * allowed by the driver, or only certain combinations? > > + * For 40 MHz the driver can set the NO_HT40 flags, but for > > + * 80/160 MHz and in particular 80+80 MHz this isn't really > > + * feasible -- should we ask the driver here? > > + */ > > It'd be real odd if a card could only do certain settings but at least > from what I was told the spec did limit the required combinations to a > smaller set so technically I could see the firmware having the checks > to only allow those settings. I don't think it makes sense to add this > as a limitation that gets annotated by a flag on the driver though. I > suspect we can assume a driver that supports VHT80 will support those > combos defined on the spec and so will a card that can support VHT160 > and the only restriction really should be regulatory. Ok so mostly I'm thinking 80+80 limitations. I could imagine, for example, that a card doesn't want to do 80+80 if they're adjacent (do 160 instead), but I have no idea what 80+80 cards are like... johannes -- 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
