From: Simon Wunderlich <siwu@xxxxxxxxxxxxxxxxxx> This patchset adds support for 5 and 10 MHz in nl80211/cfg80211/mac80211 and enables support in ath5k and ath9k, which already support this feature on the driver side. 5 and 10 MHz wide channels might be useful for: * long shot links, as the transmissions are more robust * future support for 802.11y which allows some 5 and 10 MHz channels in 3.6 GHz range * future support for 802.11p which uses 10 MHz in 5.9 GHz range * ... and more "special" applications. Note that the transmissions are only defined for the OFDM PHY in the standard and are therefore limited to 5 GHz, no HT or MIMO here. However, at least my AR5K and AR9K based chips seem to support this mode on 2.4 GHz as well. Datarates are halfed or quartered, leaving up to 27 Mbit/s or 13.5 Mbit/s gross rates respectively. Some benchmark results (IBSS, iperf, ath9k on AR9220, ath5k on AR5213A): * ath5k -> ath5k: 5.23 Mbit/s @ 5 MHz 10.8 Mbit/s @ 10 MHz 19.1 Mbit/s @ 20 MHz (NOHT mode) * ath9k -> ath9k: 5.24 Mbit/s @ 5 MHz 10.9 Mbit/s @ 10 MHz 16.4 Mbit/s @ 20 MHz (NOHT mode, appears to be a little bit low though) Comments: * Is there any special requirement for handling beacons? For example, rates are halfed or quartered, but some rates could not be represented in the rate IEs. For example, 2.25 mbit/s can not be represented as multiple of 500 kbps. * therefore, all rates are handled like the corresponding 20 MHz rates internally, which makes a lot of things easier (no changes required for rc-algos, beacon creation, etc...). We might consider adjusting the output of rates for nl80211 or radiotap, though. As always, any comments are appreciated! Cheers, Simon Simon Wunderlich (8): nl80211/cfg80211: add 5 and 10 MHz defines and wiphy flag mac80211: fix various components for the new 5 and 10 MHz widths mac80211: change IBSS channel state to chandef mac80211: fix timing for 5 MHz and 10 MHz channels nl80211: allow 5 and 10 MHz channels for IBSS ath9k: convert to chandef, enable support for 5/10 MHz channels ath9k: announce that ath9k supports 5/10 MHz ath5k: enable support for 5 MHz and 10 MHz channels drivers/net/wireless/ath/ath5k/ath5k.h | 1 + drivers/net/wireless/ath/ath5k/base.c | 25 +++++++-- drivers/net/wireless/ath/ath5k/base.h | 2 +- drivers/net/wireless/ath/ath5k/mac80211-ops.c | 2 +- drivers/net/wireless/ath/ath9k/common.c | 67 +++++++++++++++---------- drivers/net/wireless/ath/ath9k/common.h | 3 +- drivers/net/wireless/ath/ath9k/htc_drv_main.c | 5 +- drivers/net/wireless/ath/ath9k/init.c | 5 +- drivers/net/wireless/ath/ath9k/main.c | 8 ++- drivers/net/wireless/ath/ath9k/rc.c | 4 +- include/net/cfg80211.h | 2 + include/uapi/linux/nl80211.h | 4 ++ net/mac80211/ibss.c | 24 +++++---- net/mac80211/ieee80211_i.h | 45 +++++++++++++++-- net/mac80211/mesh.c | 4 +- net/mac80211/mesh_plink.c | 8 ++- net/mac80211/mlme.c | 12 +++++ net/mac80211/rate.c | 8 ++- net/mac80211/rc80211_minstrel.c | 14 ++++-- net/mac80211/rc80211_minstrel_ht.c | 8 +-- net/mac80211/tx.c | 10 ++-- net/mac80211/util.c | 43 +++++++++++----- net/wireless/chan.c | 29 +++++++++++ net/wireless/nl80211.c | 23 +++++++-- 24 files changed, 266 insertions(+), 90 deletions(-) -- 1.7.10.4 -- 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
