On 10/16/07, Michael Wu <flamingice@xxxxxxxxxxxx> wrote: > On Friday 12 October 2007 16:48:30 Johannes Berg wrote: > > (a) the driver registers which channel center frequencies it can > > operate with, it could in theory just be a range (e.g. 2400-2500 > > MHz) or more practically be list of center frequencies. > List would be best, but.. > > > Just > > contains frequencies and possibly hardware dependent values for the > > frequency. This is done in "bands", something like > > FREQUENCY_BAND_2_4GHZ and FREQUENCY_BAND_5GHZ, "bands" replace the > > current "modes". > Being able to just register frequency bands would work for many (but not all) > drivers out there and would be more convenient than listing everything. > > > (b) additionally, the driver registers as flags > > - whether it can support G mode short slot operation > > - whether it can receive B mode short barker preambles > > (both of which are only relevant if it supports 2.4 GHz operation) > I haven't seen any softmac 11b hardware that doesn't support receiving short > preamble yet. > There are old AP can be configured to use long preamble, so it shell be configurable also in station. > > (d) now, selecting a channel by frequency is unique, but we need to > > give new options to select short slot, short preamble and allowed > > bitrates. > Short preamble? What would the hardware do with this bit? > Will use short preamble ? In B/G it should use long preamble if not configured otherwise. > > Does anyone see problems with this? > More specific examples of the API you have in mind would be helpful. > > Thanks, > -Michael Wu > > - 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
