cfg80211: implement iwpower

Just on/off and timeout, and with a hacky cfg80211 method
until we figure out what we want, though this is probably
sufficient as we want to use pm_qos for wifi everywhere.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

7 files changed, 114 insertions, 90 deletions

diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index ba2643a43c73..41a32cd919af 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -14,22 +14,6 @@ config MAC80211
 comment "CFG80211 needs to be enabled for MAC80211"
         depends on CFG80211=n
 
-config MAC80211_DEFAULT_PS
-        bool "enable powersave by default"
-        depends on MAC80211
-        default y
-        help
-          This option enables powersave mode by default.
-
-          If this causes your applications to misbehave you should fix your
-          applications instead -- they need to register their network
-          latency requirement, see Documentation/power/pm_qos_interface.txt.
-
-config MAC80211_DEFAULT_PS_VALUE
-        int
-        default 1 if MAC80211_DEFAULT_PS
-        default 0
-
 menu "Rate control algorithm selection"
         depends on MAC80211 != n
 
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 03de4024597a..8c7b2cdbeeda 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1388,6 +1388,31 @@ int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
 }
 #endif
 
+static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
+                                    bool enabled, int timeout)
+{
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+        struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+        struct ieee80211_conf *conf = &local->hw.conf;
+
+        if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
+                return -EOPNOTSUPP;
+
+        if (enabled == sdata->u.mgd.powersave &&
+            timeout == conf->dynamic_ps_timeout)
+                return 0;
+
+        sdata->u.mgd.powersave = enabled;
+        conf->dynamic_ps_timeout = timeout;
+
+        if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
+                ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+
+        ieee80211_recalc_ps(local, -1);
+
+        return 0;
+}
+
 struct cfg80211_ops mac80211_config_ops = {
         .add_virtual_intf = ieee80211_add_iface,
         .del_virtual_intf = ieee80211_del_iface,
@@ -1431,4 +1456,5 @@ struct cfg80211_ops mac80211_config_ops = {
         .get_tx_power = ieee80211_get_tx_power,
         .rfkill_poll = ieee80211_rfkill_poll,
         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
+        .set_power_mgmt = ieee80211_set_power_mgmt,
 };
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index fbb93a70ddc7..2a7860009f9c 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2360,11 +2360,6 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
                 ifmgd->flags |= IEEE80211_STA_WMM_ENABLED;
 
         hw_flags = sdata->local->hw.flags;
-
-        if (hw_flags & IEEE80211_HW_SUPPORTS_PS) {
-                ifmgd->powersave = CONFIG_MAC80211_DEFAULT_PS_VALUE;
-                sdata->local->hw.conf.dynamic_ps_timeout = 500;
-        }
 }
 
 /* configuration hooks */
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index d4e61dc903e8..f77929802c7a 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -255,72 +255,6 @@ static int ieee80211_ioctl_giwrate(struct net_device *dev,
         return 0;
 }
 
-static int ieee80211_ioctl_siwpower(struct net_device *dev,
-                                    struct iw_request_info *info,
-                                    struct iw_param *wrq,
-                                    char *extra)
-{
-        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-        struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-        struct ieee80211_conf *conf = &local->hw.conf;
-        int timeout = 0;
-        bool ps;
-
-        if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
-                return -EOPNOTSUPP;
-
-        if (sdata->vif.type != NL80211_IFTYPE_STATION)
-                return -EINVAL;
-
-        if (wrq->disabled) {
-                ps = false;
-                timeout = 0;
-                goto set;
-        }
-
-        switch (wrq->flags & IW_POWER_MODE) {
-        case IW_POWER_ON:       /* If not specified */
-        case IW_POWER_MODE:     /* If set all mask */
-        case IW_POWER_ALL_R:    /* If explicitely state all */
-                ps = true;
-                break;
-        default:                /* Otherwise we ignore */
-                return -EINVAL;
-        }
-
-        if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
-                return -EINVAL;
-
-        if (wrq->flags & IW_POWER_TIMEOUT)
-                timeout = wrq->value / 1000;
-
- set:
-        if (ps == sdata->u.mgd.powersave && timeout == conf->dynamic_ps_timeout)
-                return 0;
-
-        sdata->u.mgd.powersave = ps;
-        conf->dynamic_ps_timeout = timeout;
-
-        if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
-                ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
-
-        ieee80211_recalc_ps(local, -1);
-
-        return 0;
-}
-
-static int ieee80211_ioctl_giwpower(struct net_device *dev,
-                                    struct iw_request_info *info,
-                                    union iwreq_data *wrqu,
-                                    char *extra)
-{
-        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
-        wrqu->power.disabled = !sdata->u.mgd.powersave;
-
-        return 0;
-}
-
 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
 static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
 {
@@ -436,8 +370,8 @@ static const iw_handler ieee80211_handler[] =
         (iw_handler) cfg80211_wext_giwretry,            /* SIOCGIWRETRY */
         (iw_handler) cfg80211_wext_siwencode,           /* SIOCSIWENCODE */
         (iw_handler) cfg80211_wext_giwencode,           /* SIOCGIWENCODE */
-        (iw_handler) ieee80211_ioctl_siwpower,          /* SIOCSIWPOWER */
-        (iw_handler) ieee80211_ioctl_giwpower,          /* SIOCGIWPOWER */
+        (iw_handler) cfg80211_wext_siwpower,            /* SIOCSIWPOWER */
+        (iw_handler) cfg80211_wext_giwpower,            /* SIOCGIWPOWER */
         (iw_handler) NULL,                              /* -- hole -- */
         (iw_handler) NULL,                              /* -- hole -- */
         (iw_handler) cfg80211_wext_siwgenie,            /* SIOCSIWGENIE */
diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index 040263118a20..c6031d5b135f 100644
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -26,6 +26,22 @@ config CFG80211_REG_DEBUG
 
           If unsure, say N.
 
+config CFG80211_DEFAULT_PS
+        bool "enable powersave by default"
+        depends on CFG80211
+        default y
+        help
+          This option enables powersave mode by default.
+
+          If this causes your applications to misbehave you should fix your
+          applications instead -- they need to register their network
+          latency requirement, see Documentation/power/pm_qos_interface.txt.
+
+config CFG80211_DEFAULT_PS_VALUE
+        int
+        default 1 if CFG80211_DEFAULT_PS
+        default 0
+
 config CFG80211_DEBUGFS
         bool "cfg80211 DebugFS entries"
         depends on CFG80211 && DEBUG_FS
diff --git a/net/wireless/core.c b/net/wireless/core.c
index e2f80dd0e4a6..413d291d07d7 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -550,12 +550,21 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
                 }
                 wdev->netdev = dev;
                 wdev->sme_state = CFG80211_SME_IDLE;
+                mutex_unlock(&rdev->devlist_mtx);
 #ifdef CONFIG_WIRELESS_EXT
                 wdev->wext.default_key = -1;
                 wdev->wext.default_mgmt_key = -1;
                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
+                wdev->wext.ps = CONFIG_CFG80211_DEFAULT_PS_VALUE;
+                wdev->wext.ps_timeout = 500;
+                if (rdev->ops->set_power_mgmt)
+                        if (rdev->ops->set_power_mgmt(wdev->wiphy, dev,
+                                                      wdev->wext.ps,
+                                                      wdev->wext.ps_timeout)) {
+                                /* assume this means it's off */
+                                wdev->wext.ps = false;
+                        }
 #endif
-                mutex_unlock(&rdev->devlist_mtx);
                 break;
         case NETDEV_GOING_DOWN:
                 if (!wdev->ssid_len)
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 02f052fc1808..2e1ab78fb0d7 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -987,3 +987,63 @@ int cfg80211_wext_giwauth(struct net_device *dev,
         return -EOPNOTSUPP;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
+
+int cfg80211_wext_siwpower(struct net_device *dev,
+                           struct iw_request_info *info,
+                           struct iw_param *wrq, char *extra)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+        bool ps = wdev->wext.ps;
+        int timeout = wdev->wext.ps_timeout;
+        int err;
+
+        if (wdev->iftype != NL80211_IFTYPE_STATION)
+                return -EINVAL;
+
+        if (!rdev->ops->set_power_mgmt)
+                return -EOPNOTSUPP;
+
+        if (wrq->disabled) {
+                ps = false;
+        } else {
+                switch (wrq->flags & IW_POWER_MODE) {
+                case IW_POWER_ON:       /* If not specified */
+                case IW_POWER_MODE:     /* If set all mask */
+                case IW_POWER_ALL_R:    /* If explicitely state all */
+                        ps = true;
+                        break;
+                default:                /* Otherwise we ignore */
+                        return -EINVAL;
+                }
+
+                if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
+                        return -EINVAL;
+
+                if (wrq->flags & IW_POWER_TIMEOUT)
+                        timeout = wrq->value / 1000;
+        }
+
+        err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
+        if (err)
+                return err;
+
+        wdev->wext.ps = ps;
+        wdev->wext.ps_timeout = timeout;
+
+        return 0;
+
+}
+EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
+
+int cfg80211_wext_giwpower(struct net_device *dev,
+                           struct iw_request_info *info,
+                           struct iw_param *wrq, char *extra)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+        wrq->disabled = !wdev->wext.ps;
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);