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Commit 310bc676 authored by Lukáš Turek's avatar Lukáš Turek Committed by John W. Linville
Browse files

mac80211: Add new callback set_coverage_class 



Mac80211 callback to driver set_coverage_class() sets slot time and ACK
timeout for given IEEE 802.11 coverage class. The callback is optional,
but it's essential for long distance links.

Signed-off-by: default avatarLukas Turek <8an@praha12.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 81077e82

include/net/mac80211.h

+5 −0
Original line number Diff line number Diff line
@@ -1533,6 +1533,10 @@ enum ieee80211_ampdu_mlme_action { 
 *	and need to call wiphy_rfkill_set_hw_state() in the callback.

 *	The callback can sleep.

 *

 * @set_coverage_class: Set slot time for given coverage class as specified

 *	in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout

 *	accordingly. This callback is not required and may sleep.

 *

 * @testmode_cmd: Implement a cfg80211 test mode command.

 *	The callback can sleep.

 *
@@ -1592,6 +1596,7 @@ struct ieee80211_ops { 
			    struct ieee80211_sta *sta, u16 tid, u16 *ssn);



	void (*rfkill_poll)(struct ieee80211_hw *hw);

	void (*set_coverage_class)(struct ieee80211_hw *hw, u8 coverage_class);

#ifdef CONFIG_NL80211_TESTMODE

	int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len);

#endif

net/mac80211/cfg.c

+7 −0
Original line number Diff line number Diff line
@@ -1230,6 +1230,13 @@ static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 
	struct ieee80211_local *local = wiphy_priv(wiphy);

	int err;



	if (changed & WIPHY_PARAM_COVERAGE_CLASS) {

		err = drv_set_coverage_class(local, wiphy->coverage_class);



		if (err)

			return err;

	}



	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {

		err = drv_set_rts_threshold(local, wiphy->rts_threshold);

net/mac80211/driver-ops.h

+15 −0
Original line number Diff line number Diff line
@@ -214,6 +214,21 @@ static inline int drv_set_rts_threshold(struct ieee80211_local *local, 
	return ret;

}



static inline int drv_set_coverage_class(struct ieee80211_local *local,

					 u8 value)

{

	int ret = 0;

	might_sleep();



	if (local->ops->set_coverage_class)

		local->ops->set_coverage_class(&local->hw, value);

	else

		ret = -EOPNOTSUPP;



	trace_drv_set_coverage_class(local, value, ret);

	return ret;

}



static inline void drv_sta_notify(struct ieee80211_local *local,

				  struct ieee80211_sub_if_data *sdata,

				  enum sta_notify_cmd cmd,

net/mac80211/driver-trace.h

+23 −0
Original line number Diff line number Diff line
@@ -491,6 +491,29 @@ TRACE_EVENT(drv_set_rts_threshold, 
	)

);



TRACE_EVENT(drv_set_coverage_class,

	TP_PROTO(struct ieee80211_local *local, u8 value, int ret),



	TP_ARGS(local, value, ret),



	TP_STRUCT__entry(

		LOCAL_ENTRY

		__field(u8, value)

		__field(int, ret)

	),



	TP_fast_assign(

		LOCAL_ASSIGN;

		__entry->ret = ret;

		__entry->value = value;

	),



	TP_printk(

		LOCAL_PR_FMT " value:%d ret:%d",

		LOCAL_PR_ARG, __entry->value, __entry->ret

	)

);



TRACE_EVENT(drv_sta_notify,

	TP_PROTO(struct ieee80211_local *local,

		 struct ieee80211_sub_if_data *sdata,