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authorThomas Pedersen <thomas@cozybit.com>2013-02-16 10:41:04 -0800
committerJohannes Berg <johannes.berg@intel.com>2013-02-18 15:31:23 +0100
commit52ac8c488774b7ac6d1b0ed4c323b5de90d39d6e (patch)
tree06b25764ec6c7f1fded25bc7db004e028810fad7 /net/mac80211
parent572078be54856bf751af9a43d501ffb8d09b1ea7 (diff)
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 <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/mesh_plink.c62
-rw-r--r--net/mac80211/sta_info.h2
2 files changed, 24 insertions, 40 deletions
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 0b58e813993..d74bdf94c8a 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 63dfdb5e91d..4947341a2a8 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;