Return-path: Received: from nick.hrz.tu-chemnitz.de ([134.109.228.11]:59407 "EHLO nick.hrz.tu-chemnitz.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753379Ab3F0Q7R (ORCPT ); Thu, 27 Jun 2013 12:59:17 -0400 From: Simon Wunderlich To: Johannes Berg Cc: linux-wireless@vger.kernel.org, Mathias Kretschmer , Simon Wunderlich Subject: [PATCHv5 05/18] cfg80211/mac80211: get mandatory rates based on rate flags Date: Thu, 27 Jun 2013 18:58:46 +0200 Message-Id: <1372352340-20663-6-git-send-email-siwu@hrz.tu-chemnitz.de> (sfid-20130627_185922_976124_7F1F7751) In-Reply-To: <1372352340-20663-1-git-send-email-siwu@hrz.tu-chemnitz.de> References: <1372352340-20663-1-git-send-email-siwu@hrz.tu-chemnitz.de> Sender: linux-wireless-owner@vger.kernel.org List-ID: Mandatory rates for 5 and 10 MHz are different from the rates used for 20 MHz in 2.4 GHz mode, as they use OFDM only. Signed-off-by: Simon Wunderlich Signed-off-by: Mathias Kretschmer --- Changes to PATCHv4: * it is now based on scan_width instead of rate flags --- include/net/cfg80211.h | 4 +++- net/mac80211/ibss.c | 19 +++++++++++++++---- net/wireless/mesh.c | 5 ++++- net/wireless/util.c | 14 ++++++++++---- 4 files changed, 32 insertions(+), 10 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 820cce5..83d52dc 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3069,11 +3069,13 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband, /** * ieee80211_mandatory_rates - get mandatory rates for a given band * @sband: the band to look for rates in + * @scan_width: width of the control channel * * This function returns a bitmap of the mandatory rates for the given * band, bits are set according to the rate position in the bitrates array. */ -u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband); +u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, + enum nl80211_bss_scan_width scan_width); /* * Radiotap parsing functions -- for controlled injection support diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index fa91df8..d0c27dc 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -376,6 +376,7 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, struct sta_info *sta; struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_supported_band *sband; + enum nl80211_bss_scan_width scan_width; int band; /* @@ -404,6 +405,7 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, if (WARN_ON_ONCE(!chanctx_conf)) return NULL; band = chanctx_conf->def.chan->band; + scan_width = cfg80211_chandef_to_scan_width(&chanctx_conf->def); rcu_read_unlock(); sta = sta_info_alloc(sdata, addr, GFP_KERNEL); @@ -417,7 +419,7 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, /* make sure mandatory rates are always added */ sband = local->hw.wiphy->bands[band]; sta->sta.supp_rates[band] = supp_rates | - ieee80211_mandatory_rates(sband); + ieee80211_mandatory_rates(sband, scan_width); return ieee80211_ibss_finish_sta(sta, auth); } @@ -499,6 +501,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, u64 beacon_timestamp, rx_timestamp; u32 supp_rates = 0; enum ieee80211_band band = rx_status->band; + enum nl80211_bss_scan_width scan_width; struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; bool rates_updated = false; @@ -527,9 +530,15 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, prev_rates = sta->sta.supp_rates[band]; /* make sure mandatory rates are always added */ + scan_width = NL80211_BSS_CHAN_WIDTH_20; + if (rx_status->flag & RX_FLAG_5MHZ) + scan_width = NL80211_BSS_CHAN_WIDTH_5; + if (rx_status->flag & RX_FLAG_10MHZ) + scan_width = NL80211_BSS_CHAN_WIDTH_10; + sta->sta.supp_rates[band] = supp_rates | - ieee80211_mandatory_rates(sband); - + ieee80211_mandatory_rates(sband, + scan_width); if (sta->sta.supp_rates[band] != prev_rates) { ibss_dbg(sdata, "updated supp_rates set for %pM based on beacon/probe_resp (0x%x -> 0x%x)\n", @@ -663,6 +672,7 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, struct sta_info *sta; struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_supported_band *sband; + enum nl80211_bss_scan_width scan_width; int band; /* @@ -688,6 +698,7 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, return; } band = chanctx_conf->def.chan->band; + scan_width = cfg80211_chandef_to_scan_width(&chanctx_conf->def); rcu_read_unlock(); sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); @@ -699,7 +710,7 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, /* make sure mandatory rates are always added */ sband = local->hw.wiphy->bands[band]; sta->sta.supp_rates[band] = supp_rates | - ieee80211_mandatory_rates(sband); + ieee80211_mandatory_rates(sband, scan_width); spin_lock(&ifibss->incomplete_lock); list_add(&sta->list, &ifibss->incomplete_stations); diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c index 30c4920..0553fd4 100644 --- a/net/wireless/mesh.c +++ b/net/wireless/mesh.c @@ -167,9 +167,12 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, * basic rates */ if (!setup->basic_rates) { + enum nl80211_bss_scan_width scan_width; struct ieee80211_supported_band *sband = rdev->wiphy.bands[setup->chandef.chan->band]; - setup->basic_rates = ieee80211_mandatory_rates(sband); + scan_width = cfg80211_chandef_to_scan_width(&setup->chandef); + setup->basic_rates = ieee80211_mandatory_rates(sband, + scan_width); } if (!cfg80211_reg_can_beacon(&rdev->wiphy, &setup->chandef)) diff --git a/net/wireless/util.c b/net/wireless/util.c index 74458b7..ce090c1 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -33,7 +33,8 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband, } EXPORT_SYMBOL(ieee80211_get_response_rate); -u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband) +u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, + enum nl80211_bss_scan_width scan_width) { struct ieee80211_rate *bitrates; u32 mandatory_rates = 0; @@ -43,10 +44,15 @@ u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband) if (WARN_ON(!sband)) return 1; - if (sband->band == IEEE80211_BAND_2GHZ) - mandatory_flag = IEEE80211_RATE_MANDATORY_B; - else + if (sband->band == IEEE80211_BAND_2GHZ) { + if (scan_width == NL80211_BSS_CHAN_WIDTH_5 || + scan_width == NL80211_BSS_CHAN_WIDTH_10) + mandatory_flag = IEEE80211_RATE_MANDATORY_G; + else + mandatory_flag = IEEE80211_RATE_MANDATORY_B; + } else { mandatory_flag = IEEE80211_RATE_MANDATORY_A; + } bitrates = sband->bitrates; for (i = 0; i < sband->n_bitrates; i++) -- 1.7.10.4