>-----Original Message----- >From: Johannes Berg [mailto:johannes@xxxxxxxxxxxxxxxx] >Sent: Wednesday, March 05, 2008 12:04 PM >To: Rindjunsky, Ron >Cc: Chatre, Reinette; linville@xxxxxxxxxxxxx; linux- >wireless@xxxxxxxxxxxxxxx; ipw3945-devel@xxxxxxxxxxxxxxxxxxxxx; Winkler, >Tomas >Subject: Re: [PATCH 05/11] mac80211: adding mac80211_tx_control_flags andHT >flags > > >On Wed, 2008-03-05 at 12:00 +0200, Ron Rindjunsky wrote: >> > > Tx command can be a combination of any of these flags, along with >> > > bitrate represented by ieee80211_rate. this will allow legacy drivers >to >> > > switch easily to any 11n rate representation. >> > >> > Looks good, but I wonder if there's any chance we'll see a generic rate >> > control algorithm use these flags? I.e. one not tied to Intel HW and >> > hidden in the iwlwifi subdir. >> > >> I sure hope so. the problem with current use of ieee80211_rates is >> since it is targeted for ABG rates you can have all rates ready in >> advance in the ieee80211_rates vector, but as soon an algorithm will >> need to move those rates to siso/mimo, 40 mhz, ect. each combination >> will multiple this vector, ending in a very big one. using the flags >> will allow any rate scaling algorithm to keep using current >> ieee80211_rates vector method, with any flags combination suitable. > >Hmm. Can you explain the new HT flags a bit better? All the flags we added are from spec there are not 4965 specific > >What, for example, is OFDM_HT? What happens when you select a bitrate >of, say, 11MBit and have the 40_MHZ_WIDTH flag set? HT doesn't work on CCK modulations, so this flag just basically says it's HT rate and not legacy rate. Tomas >johannes --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -- 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
