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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: Lukas Turek <8an@praha12.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Lukáš Turek 2009-12-21 22:50:48 +01:00 committed by John W. Linville
parent 81077e82c3
commit 310bc676e3
4 changed files with 50 additions and 0 deletions
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5
include/net/mac80211.h
View File

@ -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

7
net/mac80211/cfg.c
View File

@ -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);

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

@ -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,

23
net/mac80211/driver-trace.h
View File

@ -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,