mac80211: remove non-upstream antenna gain configuration patch

It seems that this was not functioning properly and was likely completely unused.
Keeping this out of tree also introduced some annoying churn when updating, because
of the iw nl80211.h sync patch.
If this is needed, it will be reintroduced when/if it is added upstream

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 0 insertions, 162 deletions

diff --git a/package/kernel/mac80211/patches/subsys/500-mac80211_configure_antenna_gain.patch b/package/kernel/mac80211/patches/subsys/500-mac80211_configure_antenna_gain.patch
deleted file mode 100644
index 58a590682a..0000000000
--- a/package/kernel/mac80211/patches/subsys/500-mac80211_configure_antenna_gain.patch
+++ /dev/null
@@ -1,162 +0,0 @@
---- a/include/net/cfg80211.h
-+++ b/include/net/cfg80211.h
-@@ -4084,6 +4084,7 @@ struct mgmt_frame_regs {
-  *	(as advertised by the nl80211 feature flag.)
-  * @get_tx_power: store the current TX power into the dbm variable;
-  *	return 0 if successful
-+ * @set_antenna_gain: set antenna gain to reduce maximum tx power if necessary
-  *
-  * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
-  *	functions to adjust rfkill hw state
-@@ -4434,6 +4435,7 @@ struct cfg80211_ops {
- 				enum nl80211_tx_power_setting type, int mbm);
- 	int	(*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
- 				int *dbm);
-+	int	(*set_antenna_gain)(struct wiphy *wiphy, int dbi);
- 
- 	void	(*rfkill_poll)(struct wiphy *wiphy);
- 
---- a/include/net/mac80211.h
-+++ b/include/net/mac80211.h
-@@ -1677,6 +1677,7 @@ enum ieee80211_smps_mode {
-  *
-  * @power_level: requested transmit power (in dBm), backward compatibility
-  *	value only that is set to the minimum of all interfaces
-+ * @max_antenna_gain: maximum antenna gain adjusted by user config (in dBi)
-  *
-  * @chandef: the channel definition to tune to
-  * @radar_enabled: whether radar detection is enabled
-@@ -1697,6 +1698,7 @@ enum ieee80211_smps_mode {
- struct ieee80211_conf {
- 	u32 flags;
- 	int power_level, dynamic_ps_timeout;
-+	int max_antenna_gain;
- 
- 	u16 listen_interval;
- 	u8 ps_dtim_period;
---- a/include/uapi/linux/nl80211.h
-+++ b/include/uapi/linux/nl80211.h
-@@ -2749,6 +2749,9 @@ enum nl80211_commands {
-  *	When used with %NL80211_CMD_FRAME_TX_STATUS, indicates the ack RX
-  *	timestamp. When used with %NL80211_CMD_FRAME RX notification, indicates
-  *	the incoming frame RX timestamp.
-+ * @NL80211_ATTR_WIPHY_ANTENNA_GAIN: Configured antenna gain. Used to reduce
-+ *	transmit power to stay within regulatory limits. u32, dBi.
-+ *
-  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
-  * @NL80211_ATTR_MAX: highest attribute number currently defined
-  * @__NL80211_ATTR_AFTER_LAST: internal use
-@@ -3277,6 +3280,8 @@ enum nl80211_attrs {
- 	NL80211_ATTR_TX_HW_TIMESTAMP,
- 	NL80211_ATTR_RX_HW_TIMESTAMP,
- 
-+	NL80211_ATTR_WIPHY_ANTENNA_GAIN,
-+
- 	/* add attributes here, update the policy in nl80211.c */
- 
- 	__NL80211_ATTR_AFTER_LAST,
---- a/net/mac80211/cfg.c
-+++ b/net/mac80211/cfg.c
-@@ -3046,6 +3046,19 @@ static int ieee80211_get_tx_power(struct
- 	return 0;
- }
- 
-+static int ieee80211_set_antenna_gain(struct wiphy *wiphy, int dbi)
-+{
-+	struct ieee80211_local *local = wiphy_priv(wiphy);
-+
-+	if (dbi < 0)
-+		return -EINVAL;
-+
-+	local->user_antenna_gain = dbi;
-+	ieee80211_hw_config(local, 0);
-+
-+	return 0;
-+}
-+
- static void ieee80211_rfkill_poll(struct wiphy *wiphy)
- {
- 	struct ieee80211_local *local = wiphy_priv(wiphy);
-@@ -4956,6 +4969,7 @@ const struct cfg80211_ops mac80211_confi
- 	.set_wiphy_params = ieee80211_set_wiphy_params,
- 	.set_tx_power = ieee80211_set_tx_power,
- 	.get_tx_power = ieee80211_get_tx_power,
-+	.set_antenna_gain = ieee80211_set_antenna_gain,
- 	.rfkill_poll = ieee80211_rfkill_poll,
- 	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
- 	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
---- a/net/mac80211/ieee80211_i.h
-+++ b/net/mac80211/ieee80211_i.h
-@@ -1542,6 +1542,7 @@ struct ieee80211_local {
- 	int dynamic_ps_forced_timeout;
- 
- 	int user_power_level; /* in dBm, for all interfaces */
-+	int user_antenna_gain; /* in dBi */
- 
- 	enum ieee80211_smps_mode smps_mode;
- 
---- a/net/mac80211/main.c
-+++ b/net/mac80211/main.c
-@@ -96,7 +96,7 @@ static u32 ieee80211_hw_conf_chan(struct
- 	struct ieee80211_sub_if_data *sdata;
- 	struct cfg80211_chan_def chandef = {};
- 	u32 changed = 0;
--	int power;
-+	int power, max_power;
- 	u32 offchannel_flag;
- 
- 	offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
-@@ -157,6 +157,12 @@ static u32 ieee80211_hw_conf_chan(struct
- 	}
- 	rcu_read_unlock();
- 
-+	max_power = chandef.chan->max_reg_power;
-+	if (local->user_antenna_gain > 0) {
-+		max_power -= local->user_antenna_gain;
-+		power = min(power, max_power);
-+	}
-+
- 	if (local->hw.conf.power_level != power) {
- 		changed |= IEEE80211_CONF_CHANGE_POWER;
- 		local->hw.conf.power_level = power;
-@@ -762,6 +768,7 @@ struct ieee80211_hw *ieee80211_alloc_hw_
- 					 IEEE80211_RADIOTAP_MCS_HAVE_BW;
- 	local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
- 					 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
-+	local->user_antenna_gain = 0;
- 	local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
- 	local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
- 	local->hw.max_mtu = IEEE80211_MAX_DATA_LEN;
---- a/net/wireless/nl80211.c
-+++ b/net/wireless/nl80211.c
-@@ -799,6 +799,7 @@ static const struct nla_policy nl80211_p
- 	[NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
- 	[NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
- 	[NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
-+	[NL80211_ATTR_WIPHY_ANTENNA_GAIN] = { .type = NLA_U32 },
- };
- 
- /* policy for the key attributes */
-@@ -3511,6 +3512,22 @@ static int nl80211_set_wiphy(struct sk_b
- 		if (result)
- 			goto out;
- 	}
-+
-+	if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_GAIN]) {
-+		int idx, dbi = 0;
-+
-+		if (!rdev->ops->set_antenna_gain) {
-+			result = -EOPNOTSUPP;
-+			goto out;
-+		}
-+
-+		idx = NL80211_ATTR_WIPHY_ANTENNA_GAIN;
-+		dbi = nla_get_u32(info->attrs[idx]);
-+
-+		result = rdev->ops->set_antenna_gain(&rdev->wiphy, dbi);
-+		if (result)
-+			goto out;
-+	}
- 
- 	if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
- 		struct wireless_dev *txp_wdev = wdev;