Return-path: Received: from static.88-198-24-112.clients.your-server.de ([88.198.24.112]:41324 "EHLO nbd.name" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932133AbaKRXKo (ORCPT ); Tue, 18 Nov 2014 18:10:44 -0500 From: Felix Fietkau To: linux-wireless@vger.kernel.org Cc: johannes@sipsolutions.net Subject: [PATCH v2] mac80211: notify drivers on sta rate table changes Date: Wed, 19 Nov 2014 00:10:42 +0100 Message-Id: <1416352242-66124-1-git-send-email-nbd@openwrt.org> (sfid-20141119_001047_867774_375121C6) Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Johannes Berg 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 --- include/net/mac80211.h | 6 ++++++ net/mac80211/driver-ops.h | 15 +++++++++++++++ net/mac80211/rate.c | 3 +++ net/mac80211/trace.h | 7 +++++++ 4 files changed, 31 insertions(+) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 28ea999..b5b4ea2 100644 --- 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); diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index 9759dd1..f61bcb9 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -621,6 +621,21 @@ 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) diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index 6081329..7dea81d 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -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); diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index 809a498..5753379 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -826,6 +826,13 @@ 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, -- 2.1.2