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mac80211: notify drivers on sta rate table changes

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This allows drivers with a firmware or chip-based rate lookup table to
use the most recent default rate selection without having to get it from
per-packet data or explicit ieee80211_get_tx_rate calls

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2014-11-19 00:10:42 +01:00
parent 8f894be2df
commit f815e2b3c0
4 changed files with 31 additions and 0 deletions
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6
include/net/mac80211.h
View File

@ -2695,6 +2695,9 @@ enum ieee80211_reconfig_type {
* uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since
* otherwise the rate control algorithm is notified directly.
* Must be atomic.
* @sta_rate_tbl_update: Notifies the driver that the rate table changed. This
* is only used if the configured rate control algorithm actually uses
* the new rate table API, and is therefore optional. Must be atomic.
*
* @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
* bursting) for a hardware TX queue.
@ -3056,6 +3059,9 @@ struct ieee80211_ops {
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
u32 changed);
void (*sta_rate_tbl_update)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
int (*conf_tx)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u16 ac,
const struct ieee80211_tx_queue_params *params);

15
net/mac80211/driver-ops.h
View File

@ -624,6 +624,21 @@ static inline void drv_sta_rc_update(struct ieee80211_local *local,
trace_drv_return_void(local);
}
static inline void drv_sta_rate_tbl_update(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta)
{
sdata = get_bss_sdata(sdata);
if (!check_sdata_in_driver(sdata))
return;
trace_drv_sta_rate_tbl_update(local, sdata, sta);
if (local->ops->sta_rate_tbl_update)
local->ops->sta_rate_tbl_update(&local->hw, &sdata->vif, sta);
trace_drv_return_void(local);
}
static inline int drv_conf_tx(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata, u16 ac,
const struct ieee80211_tx_queue_params *params)

3
net/mac80211/rate.c
View File

@ -696,6 +696,7 @@ int rate_control_set_rates(struct ieee80211_hw *hw,
struct ieee80211_sta *pubsta,
struct ieee80211_sta_rates *rates)
{
struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
struct ieee80211_sta_rates *old;
/*
@ -709,6 +710,8 @@ int rate_control_set_rates(struct ieee80211_hw *hw,
if (old)
kfree_rcu(old, rcu_head);
drv_sta_rate_tbl_update(hw_to_local(hw), sta->sdata, pubsta);
return 0;
}
EXPORT_SYMBOL(rate_control_set_rates);

7
net/mac80211/trace.h
View File

@ -846,6 +846,13 @@ DEFINE_EVENT(sta_event, drv_sta_pre_rcu_remove,
TP_ARGS(local, sdata, sta)
);
DEFINE_EVENT(sta_event, drv_sta_rate_tbl_update,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta),
TP_ARGS(local, sdata, sta)
);
TRACE_EVENT(drv_conf_tx,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,