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mac80211: Framework to get wifi-driver stats via ethtool.

Browse source 
This adds hooks to call into the driver to get additional
stats for the ethtool API.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ben Greear 2012-04-23 12:50:31 -07:00 committed by John W. Linville
parent b1ab79255c
commit e352114fd6
4 changed files with 86 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
include/net/mac80211.h
View file

@ -2223,6 +2223,14 @@ enum ieee80211_rate_control_changed {
* The @tids parameter is a bitmap and tells the driver which TIDs the
* frames will be on; it will at most have two bits set.
* This callback must be atomic.
*
* @get_et_sset_count: Ethtool API to get string-set count.
*
* @get_et_stats: Ethtool API to get a set of u64 stats.
*
* @get_et_strings: Ethtool API to get a set of strings to describe stats
* and perhaps other supported types of ethtool data-sets.
*
*/
struct ieee80211_ops {
void (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb);
@ -2353,6 +2361,15 @@ struct ieee80211_ops {
u16 tids, int num_frames,
enum ieee80211_frame_release_type reason,
bool more_data);
int (*get_et_sset_count)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, int sset);
void (*get_et_stats)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ethtool_stats *stats, u64 *data);
void (*get_et_strings)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u32 sset, u8 *data);
};
/**

21
net/mac80211/cfg.c
View file

@ -463,10 +463,17 @@ static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
struct net_device *dev,
int sset)
{
if (sset == ETH_SS_STATS)
return STA_STATS_LEN;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int rv = 0;
return -EOPNOTSUPP;
if (sset == ETH_SS_STATS)
rv += STA_STATS_LEN;
rv += drv_get_et_sset_count(sdata, sset);
if (rv == 0)
return -EOPNOTSUPP;
return rv;
}
static void ieee80211_get_et_stats(struct wiphy *wiphy,
@ -527,16 +534,22 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy,
}
rcu_read_unlock();
drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
}
static void ieee80211_get_et_strings(struct wiphy *wiphy,
struct net_device *dev,
u32 sset, u8 *data)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int sz_sta_stats = 0;
if (sset == ETH_SS_STATS) {
int sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
}
drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
}
static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,

37
net/mac80211/driver-ops.h
View file

@ -35,6 +35,43 @@ static inline void drv_tx_frags(struct ieee80211_local *local,
local->ops->tx_frags(&local->hw, vif, sta, skbs);
}
static inline void drv_get_et_strings(struct ieee80211_sub_if_data *sdata,
u32 sset, u8 *data)
{
struct ieee80211_local *local = sdata->local;
if (local->ops->get_et_strings) {
trace_drv_get_et_strings(local, sset);
local->ops->get_et_strings(&local->hw, &sdata->vif, sset, data);
trace_drv_return_void(local);
}
}
static inline void drv_get_et_stats(struct ieee80211_sub_if_data *sdata,
struct ethtool_stats *stats,
u64 *data)
{
struct ieee80211_local *local = sdata->local;
if (local->ops->get_et_stats) {
trace_drv_get_et_stats(local);
local->ops->get_et_stats(&local->hw, &sdata->vif, stats, data);
trace_drv_return_void(local);
}
}
static inline int drv_get_et_sset_count(struct ieee80211_sub_if_data *sdata,
int sset)
{
struct ieee80211_local *local = sdata->local;
int rv = 0;
if (local->ops->get_et_sset_count) {
trace_drv_get_et_sset_count(local, sset);
rv = local->ops->get_et_sset_count(&local->hw, &sdata->vif,
sset);
trace_drv_return_int(local, rv);
}
return rv;
}
static inline int drv_start(struct ieee80211_local *local)
{
int ret;

15
net/mac80211/driver-trace.h
View file

@ -161,6 +161,21 @@ DEFINE_EVENT(local_only_evt, drv_start,
TP_ARGS(local)
);
DEFINE_EVENT(local_u32_evt, drv_get_et_strings,
TP_PROTO(struct ieee80211_local *local, u32 sset),
TP_ARGS(local, sset)
);
DEFINE_EVENT(local_u32_evt, drv_get_et_sset_count,
TP_PROTO(struct ieee80211_local *local, u32 sset),
TP_ARGS(local, sset)
);
DEFINE_EVENT(local_only_evt, drv_get_et_stats,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local)
);
DEFINE_EVENT(local_only_evt, drv_suspend,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local)