92 lines
3.1 KiB
Diff
92 lines
3.1 KiB
Diff
From: Johannes Berg <johannes.berg@intel.com>
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Date: Tue, 18 Nov 2014 23:26:40 +0100
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Subject: [PATCH] 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
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use the most recent default rate selection without having to get it from
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per-packet data or explicit ieee80211_get_tx_rate calls
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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---
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--- a/include/net/mac80211.h
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+++ b/include/net/mac80211.h
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@@ -2631,6 +2631,9 @@ enum ieee80211_reconfig_type {
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* uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since
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* otherwise the rate control algorithm is notified directly.
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* Must be atomic.
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+ * @sta_rate_tbl_update: Notifies the driver that the rate table changed. This
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+ * is only used if the configured rate control algorithm actually uses
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+ * the new rate table API, and is therefore optional. Must be atomic.
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*
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* @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
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* bursting) for a hardware TX queue.
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@@ -2972,6 +2975,9 @@ struct ieee80211_ops {
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struct ieee80211_vif *vif,
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struct ieee80211_sta *sta,
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u32 changed);
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+ void (*sta_rate_tbl_update)(struct ieee80211_hw *hw,
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+ struct ieee80211_vif *vif,
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+ struct ieee80211_sta *sta);
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int (*conf_tx)(struct ieee80211_hw *hw,
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struct ieee80211_vif *vif, u16 ac,
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const struct ieee80211_tx_queue_params *params);
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--- a/net/mac80211/driver-ops.h
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+++ b/net/mac80211/driver-ops.h
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@@ -621,6 +621,21 @@ static inline void drv_sta_rc_update(str
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trace_drv_return_void(local);
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}
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+static inline void drv_sta_rate_tbl_update(struct ieee80211_local *local,
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+ struct ieee80211_sub_if_data *sdata,
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+ struct ieee80211_sta *sta)
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+{
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+ sdata = get_bss_sdata(sdata);
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+ if (!check_sdata_in_driver(sdata))
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+ return;
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+
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+ trace_drv_sta_rate_tbl_update(local, sdata, sta);
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+ if (local->ops->sta_rate_tbl_update)
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+ local->ops->sta_rate_tbl_update(&local->hw, &sdata->vif, sta);
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+
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+ trace_drv_return_void(local);
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+}
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+
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static inline int drv_conf_tx(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata, u16 ac,
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const struct ieee80211_tx_queue_params *params)
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--- a/net/mac80211/rate.c
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+++ b/net/mac80211/rate.c
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@@ -696,6 +696,7 @@ int rate_control_set_rates(struct ieee80
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struct ieee80211_sta *pubsta,
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struct ieee80211_sta_rates *rates)
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{
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+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
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struct ieee80211_sta_rates *old;
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/*
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@@ -709,6 +710,8 @@ int rate_control_set_rates(struct ieee80
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if (old)
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kfree_rcu(old, rcu_head);
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+ drv_sta_rate_tbl_update(hw_to_local(hw), sta->sdata, pubsta);
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+
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return 0;
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}
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EXPORT_SYMBOL(rate_control_set_rates);
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--- a/net/mac80211/trace.h
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+++ b/net/mac80211/trace.h
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@@ -826,6 +826,13 @@ DEFINE_EVENT(sta_event, drv_sta_pre_rcu_
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TP_ARGS(local, sdata, sta)
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);
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+DEFINE_EVENT(sta_event, drv_sta_rate_tbl_update,
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+ TP_PROTO(struct ieee80211_local *local,
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+ struct ieee80211_sub_if_data *sdata,
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+ struct ieee80211_sta *sta),
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+ TP_ARGS(local, sdata, sta)
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+);
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+
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TRACE_EVENT(drv_conf_tx,
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TP_PROTO(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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