b68010bfe7a724cf3683472d4c33169d245c0a7d
[openwrt/staging/dedeckeh.git] / package / kernel / mac80211 / patches / subsys / 522-mac80211_configure_antenna_gain.patch
1 --- a/include/net/cfg80211.h
2 +++ b/include/net/cfg80211.h
3 @@ -2959,6 +2959,7 @@ struct cfg80211_external_auth_params {
4 * (as advertised by the nl80211 feature flag.)
5 * @get_tx_power: store the current TX power into the dbm variable;
6 * return 0 if successful
7 + * @set_antenna_gain: set antenna gain to reduce maximum tx power if necessary
8 *
9 * @set_wds_peer: set the WDS peer for a WDS interface
10 *
11 @@ -3259,6 +3260,7 @@ struct cfg80211_ops {
12 enum nl80211_tx_power_setting type, int mbm);
13 int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
14 int *dbm);
15 + int (*set_antenna_gain)(struct wiphy *wiphy, int dbi);
16
17 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev,
18 const u8 *addr);
19 --- a/include/net/mac80211.h
20 +++ b/include/net/mac80211.h
21 @@ -1389,6 +1389,7 @@ enum ieee80211_smps_mode {
22 *
23 * @power_level: requested transmit power (in dBm), backward compatibility
24 * value only that is set to the minimum of all interfaces
25 + * @max_antenna_gain: maximum antenna gain adjusted by user config (in dBi)
26 *
27 * @chandef: the channel definition to tune to
28 * @radar_enabled: whether radar detection is enabled
29 @@ -1409,6 +1410,7 @@ enum ieee80211_smps_mode {
30 struct ieee80211_conf {
31 u32 flags;
32 int power_level, dynamic_ps_timeout;
33 + int max_antenna_gain;
34
35 u16 listen_interval;
36 u8 ps_dtim_period;
37 --- a/include/uapi/linux/nl80211.h
38 +++ b/include/uapi/linux/nl80211.h
39 @@ -2241,6 +2241,26 @@ enum nl80211_commands {
40 * association request when used with NL80211_CMD_NEW_STATION). Can be set
41 * only if %NL80211_STA_FLAG_WME is set.
42 *
43 + * @NL80211_ATTR_FTM_RESPONDER: nested attribute which user-space can include
44 + * in %NL80211_CMD_START_AP or %NL80211_CMD_SET_BEACON for fine timing
45 + * measurement (FTM) responder functionality and containing parameters as
46 + * possible, see &enum nl80211_ftm_responder_attr
47 + *
48 + * @NL80211_ATTR_FTM_RESPONDER_STATS: Nested attribute with FTM responder
49 + * statistics, see &enum nl80211_ftm_responder_stats.
50 + *
51 + * @NL80211_ATTR_TIMEOUT: Timeout for the given operation in milliseconds (u32),
52 + * if the attribute is not given no timeout is requested. Note that 0 is an
53 + * invalid value.
54 + *
55 + * @NL80211_ATTR_PEER_MEASUREMENTS: peer measurements request (and result)
56 + * data, uses nested attributes specified in
57 + * &enum nl80211_peer_measurement_attrs.
58 + * This is also used for capability advertisement in the wiphy information,
59 + * with the appropriate sub-attributes.
60 + * @NL80211_ATTR_WIPHY_ANTENNA_GAIN: Configured antenna gain. Used to reduce
61 + * transmit power to stay within regulatory limits. u32, dBi.
62 + *
63 * @NUM_NL80211_ATTR: total number of nl80211_attrs available
64 * @NL80211_ATTR_MAX: highest attribute number currently defined
65 * @__NL80211_ATTR_AFTER_LAST: internal use
66 @@ -2682,6 +2702,16 @@ enum nl80211_attrs {
67
68 NL80211_ATTR_HE_CAPABILITY,
69
70 + NL80211_ATTR_FTM_RESPONDER,
71 +
72 + NL80211_ATTR_FTM_RESPONDER_STATS,
73 +
74 + NL80211_ATTR_TIMEOUT,
75 +
76 + NL80211_ATTR_PEER_MEASUREMENTS,
77 +
78 + NL80211_ATTR_WIPHY_ANTENNA_GAIN,
79 +
80 /* add attributes here, update the policy in nl80211.c */
81
82 __NL80211_ATTR_AFTER_LAST,
83 --- a/net/mac80211/cfg.c
84 +++ b/net/mac80211/cfg.c
85 @@ -2494,6 +2494,19 @@ static int ieee80211_get_tx_power(struct
86 return 0;
87 }
88
89 +static int ieee80211_set_antenna_gain(struct wiphy *wiphy, int dbi)
90 +{
91 + struct ieee80211_local *local = wiphy_priv(wiphy);
92 +
93 + if (dbi < 0)
94 + return -EINVAL;
95 +
96 + local->user_antenna_gain = dbi;
97 + ieee80211_hw_config(local, 0);
98 +
99 + return 0;
100 +}
101 +
102 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
103 const u8 *addr)
104 {
105 @@ -3861,6 +3874,7 @@ const struct cfg80211_ops mac80211_confi
106 .set_wiphy_params = ieee80211_set_wiphy_params,
107 .set_tx_power = ieee80211_set_tx_power,
108 .get_tx_power = ieee80211_get_tx_power,
109 + .set_antenna_gain = ieee80211_set_antenna_gain,
110 .set_wds_peer = ieee80211_set_wds_peer,
111 .rfkill_poll = ieee80211_rfkill_poll,
112 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
113 --- a/net/mac80211/ieee80211_i.h
114 +++ b/net/mac80211/ieee80211_i.h
115 @@ -1354,6 +1354,7 @@ struct ieee80211_local {
116 int dynamic_ps_forced_timeout;
117
118 int user_power_level; /* in dBm, for all interfaces */
119 + int user_antenna_gain; /* in dBi */
120
121 enum ieee80211_smps_mode smps_mode;
122
123 --- a/net/mac80211/main.c
124 +++ b/net/mac80211/main.c
125 @@ -94,7 +94,7 @@ static u32 ieee80211_hw_conf_chan(struct
126 struct ieee80211_sub_if_data *sdata;
127 struct cfg80211_chan_def chandef = {};
128 u32 changed = 0;
129 - int power;
130 + int power, max_power;
131 u32 offchannel_flag;
132
133 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
134 @@ -151,6 +151,12 @@ static u32 ieee80211_hw_conf_chan(struct
135 }
136 rcu_read_unlock();
137
138 + max_power = chandef.chan->max_reg_power;
139 + if (local->user_antenna_gain > 0) {
140 + max_power -= local->user_antenna_gain;
141 + power = min(power, max_power);
142 + }
143 +
144 if (local->hw.conf.power_level != power) {
145 changed |= IEEE80211_CONF_CHANGE_POWER;
146 local->hw.conf.power_level = power;
147 @@ -626,6 +632,7 @@ struct ieee80211_hw *ieee80211_alloc_hw_
148 IEEE80211_RADIOTAP_MCS_HAVE_BW;
149 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
150 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
151 + local->user_antenna_gain = 0;
152 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
153 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
154 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
155 --- a/net/wireless/nl80211.c
156 +++ b/net/wireless/nl80211.c
157 @@ -430,6 +430,7 @@ static const struct nla_policy nl80211_p
158 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
159 [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
160 .len = NL80211_HE_MAX_CAPABILITY_LEN },
161 + [NL80211_ATTR_WIPHY_ANTENNA_GAIN] = { .type = NLA_U32 },
162 };
163
164 /* policy for the key attributes */
165 @@ -2587,6 +2588,20 @@ static int nl80211_set_wiphy(struct sk_b
166 if (result)
167 return result;
168 }
169 +
170 + if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_GAIN]) {
171 + int idx, dbi = 0;
172 +
173 + if (!rdev->ops->set_antenna_gain)
174 + return -EOPNOTSUPP;
175 +
176 + idx = NL80211_ATTR_WIPHY_ANTENNA_GAIN;
177 + dbi = nla_get_u32(info->attrs[idx]);
178 +
179 + result = rdev->ops->set_antenna_gain(&rdev->wiphy, dbi);
180 + if (result)
181 + return result;
182 + }
183
184 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
185 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {