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-rw-r--r--package/kernel/mac80211/patches/320-mac80211-notify-drivers-on-sta-rate-table-changes.patch92
1 files changed, 92 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/320-mac80211-notify-drivers-on-sta-rate-table-changes.patch b/package/kernel/mac80211/patches/320-mac80211-notify-drivers-on-sta-rate-table-changes.patch
new file mode 100644
index 0000000000..2ae0729901
--- /dev/null
+++ b/package/kernel/mac80211/patches/320-mac80211-notify-drivers-on-sta-rate-table-changes.patch
@@ -0,0 +1,92 @@
+From: Johannes Berg <johannes.berg@intel.com>
+Date: Tue, 18 Nov 2014 23:26:40 +0100
+Subject: [PATCH] mac80211: notify drivers on sta rate table changes
+
+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>
+---
+
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -2631,6 +2631,9 @@ 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.
+@@ -2972,6 +2975,9 @@ 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);
+--- a/net/mac80211/driver-ops.h
++++ b/net/mac80211/driver-ops.h
+@@ -621,6 +621,21 @@ static inline void drv_sta_rc_update(str
+ 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)
+--- a/net/mac80211/rate.c
++++ b/net/mac80211/rate.c
+@@ -696,6 +696,7 @@ int rate_control_set_rates(struct ieee80
+ 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 ieee80
+ 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);
+--- a/net/mac80211/trace.h
++++ b/net/mac80211/trace.h
+@@ -826,6 +826,13 @@ DEFINE_EVENT(sta_event, drv_sta_pre_rcu_
+ 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,