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mac80211: clean up mesh HT operation

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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>
This commit is contained in:
Thomas Pedersen 2013-02-16 10:41:04 -08:00 committed by Johannes Berg
parent 572078be54
commit 52ac8c4887
2 changed files with 24 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
net/mac80211/mesh_plink.c
View File

@ -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)

2
net/mac80211/sta_info.h
View File

@ -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;