This patch set adds support for HT datarates in IBSS. It is based on Alexander Simons previous work. The changes can be found in the individual patch messages. The first patch fixes probe requests sending no rates supported (at least wireshark does not find this funny). The second patch adds support for nl80211. Feature checking is implicitly performed through rdev_freq_to_chan(), which denies the configuration if HT support is not available. The third patch adds the mac80211 ibss support. Finally, further IEEE 802.11 standard compatibility questions are adressed in the fourth patch. The HT configuration set through nl80211 is not adopted from other STAs as the standard (10.3.2.2.2/11.14.2) suggests - after several discussion with other developers, we agreed that this may lead to unpredictable behaviour. We prefer to keep the local configuration and adapt the HT parameters for transmission to other STAs individually. For further standard compatibility (see fourth patch): * 9.13.3.1: IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED is set and may be used, so far only a few drivers consider it (iwl*, rt2x00, wl12xx, brcm80211, mwl8k) * 9.13.3.1: IEEE80211_HT_PARAM_RIFS_MODE is set and may be used, so far no driver seems to consider it. * 11.5.1.1: BA is only allowed when we previously received a probe response or beacon with HT information. Therefore, this is partially implemented - we don't implement a probe request. However, this should serve the same purpose IMHO and and avoids sending the ADDBA requests to legacy stations. I have tested this feature in an IBSS of two ath9k and one ath5k device. The devices join the cell succesfully and the ath9k use HT40 if the configuration matches (I've measured 70 Mbit/s) or HT20 (~40 Mbit/s) if it does not. Also the (legacy) communication to ath5k works. There is an iw patch as well to make use of this feature. It should apply well on the latest wireless-testing kernel. Signed-off-by: Simon Wunderlich <siwu@xxxxxxxxxxxxxxxxxx> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@xxxxxxxxxxxxxxxxxxx> Simon Wunderlich (4): mac80211: fill rate filter for internal scan requests nl80211: Parse channel type attribute in an ibss join request mac80211: Add HT operation modes for IBSS mac80211: handle protection mode, RIFS and ADDBA for HT IBSS include/net/cfg80211.h | 11 +++++ net/mac80211/agg-rx.c | 2 + net/mac80211/agg-tx.c | 26 +++++++++++- net/mac80211/ht.c | 2 + net/mac80211/ibss.c | 101 ++++++++++++++++++++++++++++++++++++++++---- net/mac80211/ieee80211_i.h | 1 + net/mac80211/main.c | 6 +++ net/mac80211/rx.c | 3 +- net/mac80211/util.c | 3 + net/wireless/chan.c | 12 +++-- net/wireless/nl80211.c | 27 +++++++++++- 11 files changed, 176 insertions(+), 18 deletions(-) -- 1.7.7.3 -- 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
