From 52ac8c488774b7ac6d1b0ed4c323b5de90d39d6e Mon Sep 17 00:00:00 2001 From: Thomas Pedersen Date: Sat, 16 Feb 2013 10:41:04 -0800 Subject: [PATCH] mac80211: clean up mesh HT operation ieee80211_ht_cap_ie_to_sta_ht_cap() will clean up the ht_supported flag and station bandwidth field for us if the peer beacon doesn't have an HT capability element (is operating as non-HT). Also, we don't really need a special station ch_width member to track the station operating mode any more so use sta.bandwidth instead. Signed-off-by: Thomas Pedersen Signed-off-by: Johannes Berg --- net/mac80211/mesh_plink.c | 62 +++++++++++++++------------------------ net/mac80211/sta_info.h | 2 -- 2 files changed, 24 insertions(+), 40 deletions(-) diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index 0b58e8139937..d74bdf94c8a4 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -129,7 +129,6 @@ static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) { struct ieee80211_local *local = sdata->local; struct sta_info *sta; - u32 changed = 0; u16 ht_opmode; bool non_ht_sta = false, ht20_sta = false; @@ -142,23 +141,19 @@ static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) sta->plink_state != NL80211_PLINK_ESTAB) continue; - switch (sta->ch_width) { - case NL80211_CHAN_WIDTH_20_NOHT: - mpl_dbg(sdata, - "mesh_plink %pM: nonHT sta (%pM) is present\n", - sdata->vif.addr, sta->sta.addr); + if (sta->sta.bandwidth > IEEE80211_STA_RX_BW_20) + continue; + + if (!sta->sta.ht_cap.ht_supported) { + mpl_dbg(sdata, "nonHT sta (%pM) is present\n", + sta->sta.addr); non_ht_sta = true; - goto out; - case NL80211_CHAN_WIDTH_20: - mpl_dbg(sdata, - "mesh_plink %pM: HT20 sta (%pM) is present\n", - sdata->vif.addr, sta->sta.addr); - ht20_sta = true; - default: break; } + + mpl_dbg(sdata, "HT20 sta (%pM) is present\n", sta->sta.addr); + ht20_sta = true; } -out: rcu_read_unlock(); if (non_ht_sta) @@ -169,16 +164,13 @@ out: else ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; - if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { - sdata->vif.bss_conf.ht_operation_mode = ht_opmode; - sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; - changed = BSS_CHANGED_HT; - mpl_dbg(sdata, - "mesh_plink %pM: protection mode changed to %d\n", - sdata->vif.addr, ht_opmode); - } + if (sdata->vif.bss_conf.ht_operation_mode == ht_opmode) + return 0; - return changed; + sdata->vif.bss_conf.ht_operation_mode = ht_opmode; + sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; + mpl_dbg(sdata, "selected new HT protection mode %d\n", ht_opmode); + return BSS_CHANGED_HT; } /** @@ -371,24 +363,18 @@ static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, if (sta->sta.supp_rates[band] != rates) changed |= IEEE80211_RC_SUPP_RATES_CHANGED; sta->sta.supp_rates[band] = rates; - if (elems->ht_cap_elem && - sdata->vif.bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) - ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, - elems->ht_cap_elem, sta); - else - memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); - if (elems->ht_operation) { - struct cfg80211_chan_def chandef; + if (ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, + elems->ht_cap_elem, sta)) + changed |= IEEE80211_RC_BW_CHANGED; - if (!(elems->ht_operation->ht_param & - IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) - sta->sta.bandwidth = IEEE80211_STA_RX_BW_20; - ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan, - elems->ht_operation, &chandef); - if (sta->ch_width != chandef.width) + /* HT peer is operating 20MHz-only */ + if (elems->ht_operation && + !(elems->ht_operation->ht_param & + IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { + if (sta->sta.bandwidth != IEEE80211_STA_RX_BW_20) changed |= IEEE80211_RC_BW_CHANGED; - sta->ch_width = chandef.width; + sta->sta.bandwidth = IEEE80211_STA_RX_BW_20; } if (insert) diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 63dfdb5e91da..4947341a2a82 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -285,7 +285,6 @@ struct sta_ampdu_mlme { * @t_offset: timing offset relative to this host * @t_offset_setpoint: reference timing offset of this sta to be used when * calculating clockdrift - * @ch_width: peer's channel width * @local_pm: local link-specific power save mode * @peer_pm: peer-specific power save mode towards local STA * @nonpeer_pm: STA power save mode towards non-peer neighbors @@ -386,7 +385,6 @@ struct sta_info { struct timer_list plink_timer; s64 t_offset; s64 t_offset_setpoint; - enum nl80211_chan_width ch_width; /* mesh power save */ enum nl80211_mesh_power_mode local_pm; enum nl80211_mesh_power_mode peer_pm; -- 2.39.5