diff options
Diffstat (limited to 'package/mac80211/patches/524-mac80211_configure_antenna_gain.patch')
| -rw-r--r-- | package/mac80211/patches/524-mac80211_configure_antenna_gain.patch | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/package/mac80211/patches/524-mac80211_configure_antenna_gain.patch b/package/mac80211/patches/524-mac80211_configure_antenna_gain.patch new file mode 100644 index 0000000000..9bf7fc94b2 --- /dev/null +++ b/package/mac80211/patches/524-mac80211_configure_antenna_gain.patch @@ -0,0 +1,179 @@ +--- a/include/net/mac80211.h ++++ b/include/net/mac80211.h +@@ -851,6 +851,7 @@ enum ieee80211_smps_mode { + * the CONF_PS flag is set. + * + * @power_level: requested transmit power (in dBm) ++ * @max_antenna_gain: maximum antenna gain adjusted by user config (in dBi) + * + * @channel: the channel to tune to + * @channel_type: the channel (HT) type +@@ -870,6 +871,7 @@ struct ieee80211_conf { + u32 flags; + int power_level, dynamic_ps_timeout; + int max_sleep_period; ++ int max_antenna_gain; + + u16 listen_interval; + u8 ps_dtim_period; +--- a/net/mac80211/main.c ++++ b/net/mac80211/main.c +@@ -101,7 +101,7 @@ int ieee80211_hw_config(struct ieee80211 + { + struct ieee80211_channel *chan; + int ret = 0; +- int power; ++ int power, ant_gain, max_power; + enum nl80211_channel_type channel_type; + u32 offchannel_flag; + +@@ -152,19 +152,31 @@ int ieee80211_hw_config(struct ieee80211 + changed |= IEEE80211_CONF_CHANGE_SMPS; + } + +- if (test_bit(SCAN_SW_SCANNING, &local->scanning) || +- test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) || +- test_bit(SCAN_HW_SCANNING, &local->scanning) || +- !local->ap_power_level) +- power = chan->max_power; +- else +- power = min(chan->max_power, local->ap_power_level); ++ max_power = chan->max_reg_power; ++ if (!test_bit(SCAN_SW_SCANNING, &local->scanning) && ++ !test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) && ++ !test_bit(SCAN_HW_SCANNING, &local->scanning) && ++ local->ap_power_level) ++ max_power = min(max_power, local->ap_power_level); ++ ++ ant_gain = chan->max_antenna_gain; ++ if (local->user_antenna_gain > 0) { ++ if (local->user_antenna_gain > ant_gain) { ++ max_power -= local->user_antenna_gain - ant_gain; ++ ant_gain = 0; ++ } else ++ ant_gain -= local->user_antenna_gain; ++ } ++ ++ power = min(chan->max_power, max_power); + + if (local->user_power_level >= 0) + power = min(power, local->user_power_level); + +- if (local->hw.conf.power_level != power) { ++ if (local->hw.conf.power_level != power || ++ local->hw.conf.max_antenna_gain != ant_gain) { + changed |= IEEE80211_CONF_CHANGE_POWER; ++ local->hw.conf.max_antenna_gain = ant_gain; + local->hw.cur_power_level = power; + local->hw.conf.power_level = power; + } +@@ -620,6 +632,7 @@ struct ieee80211_hw *ieee80211_alloc_hw( + IEEE80211_RADIOTAP_MCS_HAVE_GI | + IEEE80211_RADIOTAP_MCS_HAVE_BW; + local->user_power_level = -1; ++ local->user_antenna_gain = -1; + wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; + + INIT_LIST_HEAD(&local->interfaces); +--- a/net/mac80211/ieee80211_i.h ++++ b/net/mac80211/ieee80211_i.h +@@ -1063,6 +1063,7 @@ struct ieee80211_local { + + int user_power_level; /* in dBm */ + int ap_power_level; /* in dBm */ ++ int user_antenna_gain; /* in dBi */ + + enum ieee80211_smps_mode smps_mode; + +--- a/include/linux/nl80211.h ++++ b/include/linux/nl80211.h +@@ -1517,6 +1517,8 @@ enum nl80211_attrs { + + NL80211_ATTR_USER_REG_HINT_TYPE, + ++ NL80211_ATTR_WIPHY_ANTENNA_GAIN, ++ + /* add attributes here, update the policy in nl80211.c */ + + __NL80211_ATTR_AFTER_LAST, +--- a/net/wireless/nl80211.c ++++ b/net/wireless/nl80211.c +@@ -355,6 +355,7 @@ static const struct nla_policy nl80211_p + [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, + [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, + [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, ++ [NL80211_ATTR_WIPHY_ANTENNA_GAIN] = { .type = NLA_U32 }, + }; + + /* policy for the key attributes */ +@@ -1604,6 +1605,22 @@ static int nl80211_set_wiphy(struct sk_b + goto bad_res; + } + ++ if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_GAIN]) { ++ int idx, dbi = 0; ++ ++ if (!rdev->ops->set_antenna_gain) { ++ result = -EOPNOTSUPP; ++ goto bad_res; ++ } ++ ++ 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 bad_res; ++ } ++ + if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && + info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { + u32 tx_ant, rx_ant; +--- a/net/mac80211/cfg.c ++++ b/net/mac80211/cfg.c +@@ -1986,6 +1986,19 @@ 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) + { +@@ -3084,6 +3097,7 @@ struct cfg80211_ops mac80211_config_ops + .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/include/net/cfg80211.h ++++ b/include/net/cfg80211.h +@@ -1551,6 +1551,7 @@ struct cfg80211_gtk_rekey_data { + * the power passed is in mBm, to get dBm use MBM_TO_DBM(). + * @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 + * +@@ -1750,6 +1751,7 @@ struct cfg80211_ops { + int (*set_tx_power)(struct wiphy *wiphy, + enum nl80211_tx_power_setting type, int mbm); + int (*get_tx_power)(struct wiphy *wiphy, 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); |