diff options
Diffstat (limited to 'package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch b/package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch new file mode 100644 index 0000000..be7bd58 --- /dev/null +++ b/package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch @@ -0,0 +1,160 @@ +--- a/include/net/cfg80211.h ++++ b/include/net/cfg80211.h +@@ -2361,6 +2361,7 @@ struct cfg80211_qos_map { + * (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 + * + * @set_wds_peer: set the WDS peer for a WDS interface + * +@@ -2617,6 +2618,7 @@ 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); + + int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, + const u8 *addr); +--- a/include/net/mac80211.h ++++ b/include/net/mac80211.h +@@ -1250,6 +1250,7 @@ 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 +@@ -1270,6 +1271,7 @@ 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 +@@ -1783,6 +1783,9 @@ enum nl80211_commands { + * between scans. The scan plans are executed sequentially. + * Each scan plan is a nested attribute of &enum nl80211_sched_scan_plan. + * ++ * @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 +@@ -2157,6 +2160,8 @@ enum nl80211_attrs { + NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, + NL80211_ATTR_SCHED_SCAN_PLANS, + ++ 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 +@@ -2206,6 +2206,19 @@ 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 int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, + const u8 *addr) + { +@@ -3849,6 +3862,7 @@ 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, + .set_wds_peer = ieee80211_set_wds_peer, + .rfkill_poll = ieee80211_rfkill_poll, + CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) +--- a/net/mac80211/ieee80211_i.h ++++ b/net/mac80211/ieee80211_i.h +@@ -1321,6 +1321,7 @@ 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 +@@ -93,7 +93,7 @@ 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; +@@ -150,6 +150,12 @@ 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; +@@ -580,6 +586,7 @@ 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->user_power_level = IEEE80211_UNSET_POWER_LEVEL; +--- a/net/wireless/nl80211.c ++++ b/net/wireless/nl80211.c +@@ -403,6 +403,7 @@ static const struct nla_policy nl80211_p + [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, + [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, + [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, ++ [NL80211_ATTR_WIPHY_ANTENNA_GAIN] = { .type = NLA_U32 }, + }; + + /* policy for the key attributes */ +@@ -2220,6 +2221,20 @@ static int nl80211_set_wiphy(struct sk_b + if (result) + return result; + } ++ ++ if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_GAIN]) { ++ int idx, dbi = 0; ++ ++ if (!rdev->ops->set_antenna_gain) ++ return -EOPNOTSUPP; ++ ++ idx = NL80211_ATTR_WIPHY_ANTENNA_GAIN; ++ dbi = nla_get_u32(info->attrs[idx]); ++ ++ result = rdev->ops->set_antenna_gain(&rdev->wiphy, dbi); ++ if (result) ++ return result; ++ } + + if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && + info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { |