Commit c8442118 authored by Johannes Berg's avatar Johannes Berg

cfg80211: allow per interface TX power setting

The TX power setting is currently per wiphy (hardware
device) but with multi-channel capabilities that doesn't
make much sense any more.

Allow drivers (and mac80211) to advertise support for
per-interface TX power configuration. When the TX power
is configured for the wiphy, the wdev will be NULL and
the driver can still handle that, but when a wdev is
given the TX power can be set only for that wdev now.
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 71fe96bf
......@@ -1384,11 +1384,8 @@ static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
return 0;
}
/*
* The type nl80211_tx_power_setting replaces the following
* data type from 2.6.36 onwards
*/
static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
struct wireless_dev *wdev,
enum nl80211_tx_power_setting type,
int mbm)
{
......@@ -1423,7 +1420,9 @@ static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
return 0;
}
static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, int *dbm)
static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy,
struct wireless_dev *wdev,
int *dbm)
{
struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
struct ath6kl_vif *vif;
......
......@@ -1721,7 +1721,7 @@ brcmf_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *ndev,
}
static s32
brcmf_cfg80211_set_tx_power(struct wiphy *wiphy,
brcmf_cfg80211_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
enum nl80211_tx_power_setting type, s32 mbm)
{
......@@ -1770,7 +1770,9 @@ done:
return err;
}
static s32 brcmf_cfg80211_get_tx_power(struct wiphy *wiphy, s32 *dbm)
static s32 brcmf_cfg80211_get_tx_power(struct wiphy *wiphy,
struct wireless_dev *wdev,
s32 *dbm)
{
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
......
......@@ -324,6 +324,7 @@ mwifiex_cfg80211_cancel_remain_on_channel(struct wiphy *wiphy,
*/
static int
mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
struct wireless_dev *wdev,
enum nl80211_tx_power_setting type,
int mbm)
{
......
......@@ -490,9 +490,12 @@ static int rndis_scan(struct wiphy *wiphy,
static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
static int rndis_set_tx_power(struct wiphy *wiphy,
struct wireless_dev *wdev,
enum nl80211_tx_power_setting type,
int mbm);
static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
static int rndis_get_tx_power(struct wiphy *wiphy,
struct wireless_dev *wdev,
int *dbm);
static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_connect_params *sme);
......@@ -1903,6 +1906,7 @@ static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
}
static int rndis_set_tx_power(struct wiphy *wiphy,
struct wireless_dev *wdev,
enum nl80211_tx_power_setting type,
int mbm)
{
......@@ -1930,7 +1934,9 @@ static int rndis_set_tx_power(struct wiphy *wiphy,
return -ENOTSUPP;
}
static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
static int rndis_get_tx_power(struct wiphy *wiphy,
struct wireless_dev *wdev,
int *dbm)
{
struct rndis_wlan_private *priv = wiphy_priv(wiphy);
struct usbnet *usbdev = priv->usbdev;
......
......@@ -1551,7 +1551,10 @@ struct cfg80211_gtk_rekey_data {
* struct wiphy. If returning an error, no value should be changed.
*
* @set_tx_power: set the transmit power according to the parameters,
* the power passed is in mBm, to get dBm use MBM_TO_DBM().
* the power passed is in mBm, to get dBm use MBM_TO_DBM(). The
* wdev may be %NULL if power was set for the wiphy, and will
* always be %NULL unless the driver supports per-vif TX power
* (as advertised by the nl80211 feature flag.)
* @get_tx_power: store the current TX power into the dbm variable;
* return 0 if successful
*
......@@ -1748,9 +1751,10 @@ struct cfg80211_ops {
int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed);
int (*set_tx_power)(struct wiphy *wiphy,
int (*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
enum nl80211_tx_power_setting type, int mbm);
int (*get_tx_power)(struct wiphy *wiphy, int *dbm);
int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
int *dbm);
int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
const u8 *addr);
......
......@@ -3051,6 +3051,7 @@ enum nl80211_ap_sme_features {
* @NL80211_FEATURE_LOW_PRIORITY_SCAN: This driver supports low priority scan
* @NL80211_FEATURE_SCAN_FLUSH: Scan flush is supported
* @NL80211_FEATURE_AP_SCAN: Support scanning using an AP vif
* @NL80211_FEATURE_VIF_TXPOWER: The driver supports per-vif TX power setting
*/
enum nl80211_feature_flags {
NL80211_FEATURE_SK_TX_STATUS = 1 << 0,
......@@ -3062,6 +3063,7 @@ enum nl80211_feature_flags {
NL80211_FEATURE_LOW_PRIORITY_SCAN = 1 << 6,
NL80211_FEATURE_SCAN_FLUSH = 1 << 7,
NL80211_FEATURE_AP_SCAN = 1 << 8,
NL80211_FEATURE_VIF_TXPOWER = 1 << 9,
};
/**
......
......@@ -1992,6 +1992,7 @@ static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
}
static int ieee80211_set_tx_power(struct wiphy *wiphy,
struct wireless_dev *wdev,
enum nl80211_tx_power_setting type, int mbm)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
......@@ -2026,7 +2027,9 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy,
return 0;
}
static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
static int ieee80211_get_tx_power(struct wiphy *wiphy,
struct wireless_dev *wdev,
int *dbm)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
......
......@@ -1585,9 +1585,13 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
}
if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
struct wireless_dev *txp_wdev = wdev;
enum nl80211_tx_power_setting type;
int idx, mbm = 0;
if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
txp_wdev = NULL;
if (!rdev->ops->set_tx_power) {
result = -EOPNOTSUPP;
goto bad_res;
......@@ -1607,7 +1611,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
mbm = nla_get_u32(info->attrs[idx]);
}
result = rdev_set_tx_power(rdev, type, mbm);
result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
if (result)
goto bad_res;
}
......
......@@ -476,21 +476,22 @@ rdev_set_wiphy_params(struct cfg80211_registered_device *rdev, u32 changed)
}
static inline int rdev_set_tx_power(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
enum nl80211_tx_power_setting type, int mbm)
{
int ret;
trace_rdev_set_tx_power(&rdev->wiphy, type, mbm);
ret = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
trace_rdev_set_tx_power(&rdev->wiphy, wdev, type, mbm);
ret = rdev->ops->set_tx_power(&rdev->wiphy, wdev, type, mbm);
trace_rdev_return_int(&rdev->wiphy, ret);
return ret;
}
static inline int rdev_get_tx_power(struct cfg80211_registered_device *rdev,
int *dbm)
struct wireless_dev *wdev, int *dbm)
{
int ret;
trace_rdev_get_tx_power(&rdev->wiphy);
ret = rdev->ops->get_tx_power(&rdev->wiphy, dbm);
trace_rdev_get_tx_power(&rdev->wiphy, wdev);
ret = rdev->ops->get_tx_power(&rdev->wiphy, wdev, dbm);
trace_rdev_return_int_int(&rdev->wiphy, ret, *dbm);
return ret;
}
......
......@@ -26,7 +26,7 @@
#define WIPHY_PR_ARG MAC_PR_ARG(wiphy_mac)
#define WDEV_ENTRY __field(u32, id)
#define WDEV_ASSIGN (__entry->id) = (wdev->identifier)
#define WDEV_ASSIGN (__entry->id) = (wdev ? wdev->identifier : 0)
#define WDEV_PR_FMT ", wdev id: %u"
#define WDEV_PR_ARG (__entry->id)
......@@ -260,11 +260,6 @@ DEFINE_EVENT(wiphy_only_evt, rdev_get_antenna,
TP_ARGS(wiphy)
);
DEFINE_EVENT(wiphy_only_evt, rdev_get_tx_power,
TP_PROTO(struct wiphy *wiphy),
TP_ARGS(wiphy)
);
DEFINE_EVENT(wiphy_only_evt, rdev_rfkill_poll,
TP_PROTO(struct wiphy *wiphy),
TP_ARGS(wiphy)
......@@ -1230,22 +1225,29 @@ TRACE_EVENT(rdev_set_wiphy_params,
WIPHY_PR_ARG, __entry->changed)
);
DEFINE_EVENT(wiphy_wdev_evt, rdev_get_tx_power,
TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev),
TP_ARGS(wiphy, wdev)
);
TRACE_EVENT(rdev_set_tx_power,
TP_PROTO(struct wiphy *wiphy, enum nl80211_tx_power_setting type,
int mbm),
TP_ARGS(wiphy, type, mbm),
TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev,
enum nl80211_tx_power_setting type, int mbm),
TP_ARGS(wiphy, wdev, type, mbm),
TP_STRUCT__entry(
WIPHY_ENTRY
WDEV_ENTRY
__field(enum nl80211_tx_power_setting, type)
__field(int, mbm)
),
TP_fast_assign(
WIPHY_ASSIGN;
WDEV_ASSIGN;
__entry->type = type;
__entry->mbm = mbm;
),
TP_printk(WIPHY_PR_FMT ", type: %d, mbm: %d",
WIPHY_PR_ARG, __entry->type, __entry->mbm)
TP_printk(WIPHY_PR_FMT WDEV_PR_FMT ", type: %d, mbm: %d",
WIPHY_PR_ARG, WDEV_PR_ARG,__entry->type, __entry->mbm)
);
TRACE_EVENT(rdev_return_int_int,
......
......@@ -895,7 +895,7 @@ static int cfg80211_wext_siwtxpower(struct net_device *dev,
return 0;
}
return rdev_set_tx_power(rdev, type, DBM_TO_MBM(dbm));
return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
}
static int cfg80211_wext_giwtxpower(struct net_device *dev,
......@@ -914,7 +914,7 @@ static int cfg80211_wext_giwtxpower(struct net_device *dev,
if (!rdev->ops->get_tx_power)
return -EOPNOTSUPP;
err = rdev_get_tx_power(rdev, &val);
err = rdev_get_tx_power(rdev, wdev, &val);
if (err)
return err;
......
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