On Tue, 2008-12-09 at 16:28 +0100, Christian Lamparter wrote:
> This patch replaces the newly introduced sta_notify_ps function,
> which can be used to notify the driver about every power state
> transition for all associated stations, by integrating its functionality
> back into the original sta_notify callback.
>
> Signed-off-by: Christian Lamparter <chunkeey@xxxxxx>
Looks good to me.
Acked-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
> ---
> It turned out that sta_notify needs to be atomic as well. so
> we don't break locking requirement.
>
> Let me know, if you find any spelling errors in the documentation.
>
> and @ Johannes:
> make htmldocs -j3
> DOCPROC Documentation/DocBook/mac80211.xml
> HTML Documentation/DocBook/mac80211.html
> [...]
> ---
> diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
> index f43da1c..af6cd83 100644
> --- a/drivers/net/wireless/mac80211_hwsim.c
> +++ b/drivers/net/wireless/mac80211_hwsim.c
> @@ -524,6 +524,10 @@ static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
> case STA_NOTIFY_REMOVE:
> hwsim_clear_sta_magic(sta);
> break;
> + case STA_NOTIFY_SLEEP:
> + case STA_NOTIFY_AWAKE:
> + /* TODO: make good use of these flags */
> + break;
> }
> }
>
> diff --git a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c
> index 719bdab..1e1c06e 100644
> --- a/drivers/net/wireless/p54/p54common.c
> +++ b/drivers/net/wireless/p54/p54common.c
> @@ -1052,19 +1052,6 @@ static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
> return 0;
> }
>
> -static void p54_sta_notify_ps(struct ieee80211_hw *dev,
> - enum sta_notify_ps_cmd notify_cmd,
> - struct ieee80211_sta *sta)
> -{
> - switch (notify_cmd) {
> - case STA_NOTIFY_AWAKE:
> - p54_sta_unlock(dev, sta->addr);
> - break;
> - default:
> - break;
> - }
> -}
> -
> static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
> enum sta_notify_cmd notify_cmd,
> struct ieee80211_sta *sta)
> @@ -1079,6 +1066,10 @@ static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
>
> p54_sta_unlock(dev, sta->addr);
> break;
> + case STA_NOTIFY_AWAKE:
> + /* update the firmware's filter table */
> + p54_sta_unlock(dev, sta->addr);
> + break;
> default:
> break;
> }
> @@ -2028,7 +2019,6 @@ static const struct ieee80211_ops p54_ops = {
> .add_interface = p54_add_interface,
> .remove_interface = p54_remove_interface,
> .set_tim = p54_set_tim,
> - .sta_notify_ps = p54_sta_notify_ps,
> .sta_notify = p54_sta_notify,
> .set_key = p54_set_key,
> .config = p54_config,
> diff --git a/include/net/mac80211.h b/include/net/mac80211.h
> index 346f373..674f90d 100644
> --- a/include/net/mac80211.h
> +++ b/include/net/mac80211.h
> @@ -773,25 +773,16 @@ struct ieee80211_sta {
> * enum sta_notify_cmd - sta notify command
> *
> * Used with the sta_notify() callback in &struct ieee80211_ops, this
> - * indicates addition and removal of a station to station table.
> + * indicates addition and removal of a station to station table,
> + * or if a associated station made a power state transition.
> *
> * @STA_NOTIFY_ADD: a station was added to the station table
> * @STA_NOTIFY_REMOVE: a station being removed from the station table
> - */
> -enum sta_notify_cmd {
> - STA_NOTIFY_ADD, STA_NOTIFY_REMOVE
> -};
> -
> -/**
> - * enum sta_notify_ps_cmd - sta power save notify command
> - *
> - * Used with the sta_notify_ps() callback in &struct ieee80211_ops to
> - * notify the driver if a station made a power state transition.
> - *
> * @STA_NOTIFY_SLEEP: a station is now sleeping
> * @STA_NOTIFY_AWAKE: a sleeping station woke up
> */
> -enum sta_notify_ps_cmd {
> +enum sta_notify_cmd {
> + STA_NOTIFY_ADD, STA_NOTIFY_REMOVE,
> STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE,
> };
>
> @@ -1262,11 +1253,9 @@ enum ieee80211_ampdu_mlme_action {
> * the device does fragmentation by itself; if this method is assigned then
> * the stack will not do fragmentation.
> *
> - * @sta_notify: Notifies low level driver about addition or removal of an
> - * associated station, AP, IBSS/WDS/mesh peer etc. Must be atomic.
> - *
> - * @sta_ps_notify: Notifies low level driver about the power state transition
> - * of a associated station. Must be atomic.
> + * @sta_notify: Notifies low level driver about addition, removal or power
> + * state transition of an associated station, AP, IBSS/WDS/mesh peer etc.
> + * Must be atomic.
> *
> * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
> * bursting) for a hardware TX queue.
> @@ -1334,8 +1323,6 @@ struct ieee80211_ops {
> int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value);
> void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
> enum sta_notify_cmd, struct ieee80211_sta *sta);
> - void (*sta_notify_ps)(struct ieee80211_hw *hw,
> - enum sta_notify_ps_cmd, struct ieee80211_sta *sta);
> int (*conf_tx)(struct ieee80211_hw *hw, u16 queue,
> const struct ieee80211_tx_queue_params *params);
> int (*get_tx_stats)(struct ieee80211_hw *hw,
> diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
> index 59f356a..ffaaa2a 100644
> --- a/net/mac80211/rx.c
> +++ b/net/mac80211/rx.c
> @@ -659,9 +659,9 @@ static void ap_sta_ps_start(struct sta_info *sta)
>
> atomic_inc(&sdata->bss->num_sta_ps);
> set_and_clear_sta_flags(sta, WLAN_STA_PS, WLAN_STA_PSPOLL);
> - if (local->ops->sta_notify_ps)
> - local->ops->sta_notify_ps(local_to_hw(local), STA_NOTIFY_SLEEP,
> - &sta->sta);
> + if (local->ops->sta_notify)
> + local->ops->sta_notify(local_to_hw(local), &sdata->vif,
> + STA_NOTIFY_SLEEP, &sta->sta);
> #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
> printk(KERN_DEBUG "%s: STA %s aid %d enters power save mode\n",
> sdata->dev->name, print_mac(mac, sta->sta.addr), sta->sta.aid);
> @@ -679,9 +679,9 @@ static int ap_sta_ps_end(struct sta_info *sta)
> atomic_dec(&sdata->bss->num_sta_ps);
>
> clear_sta_flags(sta, WLAN_STA_PS | WLAN_STA_PSPOLL);
> - if (local->ops->sta_notify_ps)
> - local->ops->sta_notify_ps(local_to_hw(local), STA_NOTIFY_AWAKE,
> - &sta->sta);
> + if (local->ops->sta_notify)
> + local->ops->sta_notify(local_to_hw(local), &sdata->vif,
> + STA_NOTIFY_AWAKE, &sta->sta);
>
> if (!skb_queue_empty(&sta->ps_tx_buf))
> sta_info_clear_tim_bit(sta);
>
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