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mac80211: extend/document powersave API

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This modifies hardware flags for powersave to support three different
flags:
 * IEEE80211_HW_SUPPORTS_PS - indicates general PS support
 * IEEE80211_HW_PS_NULLFUNC_STACK - indicates nullfunc sending in software
 * IEEE80211_HW_SUPPORTS_DYNAMIC_PS - indicates dynamic PS on the device

It also adds documentation for all this which explains how to set the
various flags.

Additionally, it fixes a few things:
 * a spot where && was used to test flags
 * enable CONF_PS only when associated again

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-01-07 18:28:20 +01:00
committed by John W. Linville
parent acbaf32e94
commit 4be8c3873e
11 changed files with 111 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
net/mac80211/mlme.c
View File

@@ -775,17 +775,17 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
bss_info_changed |= BSS_CHANGED_BASIC_RATES;
ieee80211_bss_info_change_notify(sdata, bss_info_changed);
if (local->powersave &&
!(local->hw.flags & IEEE80211_HW_NO_STACK_DYNAMIC_PS)) {
if (local->hw.conf.dynamic_ps_timeout > 0)
if (local->powersave) {
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) &&
local->hw.conf.dynamic_ps_timeout > 0) {
mod_timer(&local->dynamic_ps_timer, jiffies +
msecs_to_jiffies(
local->hw.conf.dynamic_ps_timeout));
else {
ieee80211_send_nullfunc(local, sdata, 1);
} else {
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
ieee80211_send_nullfunc(local, sdata, 1);
conf->flags |= IEEE80211_CONF_PS;
ieee80211_hw_config(local,
IEEE80211_CONF_CHANGE_PS);
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
}
@@ -1779,16 +1779,14 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param,
elems.wmm_param_len);
if (!(local->hw.flags & IEEE80211_HW_NO_STACK_DYNAMIC_PS)) {
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK &&
local->hw.conf.flags & IEEE80211_CONF_PS) {
directed_tim = check_tim(&elems, ifsta->aid, &is_mc);
if (directed_tim || is_mc) {
if (local->hw.conf.flags && IEEE80211_CONF_PS) {
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
ieee80211_hw_config(local,
IEEE80211_CONF_CHANGE_PS);
ieee80211_send_nullfunc(local, sdata, 0);
}
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
ieee80211_send_nullfunc(local, sdata, 0);
}
}
@@ -2694,9 +2692,10 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
if (local->hw.conf.flags & IEEE80211_CONF_PS)
return;
ieee80211_send_nullfunc(local, sdata, 1);
local->hw.conf.flags |= IEEE80211_CONF_PS;
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
ieee80211_send_nullfunc(local, sdata, 1);
local->hw.conf.flags |= IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}