mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 02:29:01 +00:00
9ca21dc7d5
This updates the mac80211 backport. The removed patches are already integrated in the upstream version. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
102 lines
3.7 KiB
Diff
102 lines
3.7 KiB
Diff
From: Sven Eckelmann <seckelmann@datto.com>
|
|
Date: Wed, 28 Nov 2018 16:16:27 +0100
|
|
Subject: ath10k: adjust tx power reduction for US regulatory domain
|
|
|
|
FCC allows maximum antenna gain of 6 dBi. 15.247(b)(4):
|
|
|
|
> (4) The conducted output power limit
|
|
> specified in paragraph (b) of this section
|
|
> is based on the use of antennas
|
|
> with directional gains that do not exceed
|
|
> 6 dBi. Except as shown in paragraph
|
|
> (c) of this section, if transmitting
|
|
> antennas of directional gain greater
|
|
> than 6 dBi are used, the conducted
|
|
> output power from the intentional radiator
|
|
> shall be reduced below the stated
|
|
> values in paragraphs (b)(1), (b)(2),
|
|
> and (b)(3) of this section, as appropriate,
|
|
> by the amount in dB that the
|
|
> directional gain of the antenna exceeds
|
|
> 6 dBi.
|
|
|
|
https://www.gpo.gov/fdsys/pkg/CFR-2013-title47-vol1/pdf/CFR-2013-title47-vol1-sec15-247.pdf
|
|
|
|
Signed-off-by: Sven Eckelmann <seckelmann@datto.com>
|
|
|
|
Forwarded: no
|
|
|
|
--- a/drivers/net/wireless/ath/ath10k/mac.c
|
|
+++ b/drivers/net/wireless/ath/ath10k/mac.c
|
|
@@ -1010,6 +1010,40 @@ static inline int ath10k_vdev_setup_sync
|
|
return ar->last_wmi_vdev_start_status;
|
|
}
|
|
|
|
+static u32 ath10k_get_max_antenna_gain(struct ath10k *ar,
|
|
+ u32 ch_max_antenna_gain)
|
|
+{
|
|
+ u32 max_antenna_gain;
|
|
+
|
|
+ if (ar->dfs_detector && ar->dfs_detector->region == NL80211_DFS_FCC) {
|
|
+ /* FCC allows maximum antenna gain of 6 dBi. 15.247(b)(4):
|
|
+ *
|
|
+ * > (4) The conducted output power limit
|
|
+ * > specified in paragraph (b) of this section
|
|
+ * > is based on the use of antennas
|
|
+ * > with directional gains that do not exceed
|
|
+ * > 6 dBi. Except as shown in paragraph
|
|
+ * > (c) of this section, if transmitting
|
|
+ * > antennas of directional gain greater
|
|
+ * > than 6 dBi are used, the conducted
|
|
+ * > output power from the intentional radiator
|
|
+ * > shall be reduced below the stated
|
|
+ * > values in paragraphs (b)(1), (b)(2),
|
|
+ * > and (b)(3) of this section, as appropriate,
|
|
+ * > by the amount in dB that the
|
|
+ * > directional gain of the antenna exceeds
|
|
+ * > 6 dBi.
|
|
+ *
|
|
+ * https://www.gpo.gov/fdsys/pkg/CFR-2013-title47-vol1/pdf/CFR-2013-title47-vol1-sec15-247.pdf
|
|
+ */
|
|
+ max_antenna_gain = 6;
|
|
+ } else {
|
|
+ max_antenna_gain = 0;
|
|
+ }
|
|
+
|
|
+ return max(ch_max_antenna_gain, max_antenna_gain);
|
|
+}
|
|
+
|
|
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
|
|
{
|
|
struct cfg80211_chan_def *chandef = NULL;
|
|
@@ -1042,7 +1076,8 @@ static int ath10k_monitor_vdev_start(str
|
|
arg.channel.min_power = 0;
|
|
arg.channel.max_power = channel->max_power * 2;
|
|
arg.channel.max_reg_power = channel->max_reg_power * 2;
|
|
- arg.channel.max_antenna_gain = channel->max_antenna_gain;
|
|
+ arg.channel.max_antenna_gain = ath10k_get_max_antenna_gain(ar,
|
|
+ channel->max_antenna_gain);
|
|
|
|
reinit_completion(&ar->vdev_setup_done);
|
|
reinit_completion(&ar->vdev_delete_done);
|
|
@@ -1488,7 +1523,8 @@ static int ath10k_vdev_start_restart(str
|
|
arg.channel.min_power = 0;
|
|
arg.channel.max_power = chandef->chan->max_power * 2;
|
|
arg.channel.max_reg_power = chandef->chan->max_reg_power * 2;
|
|
- arg.channel.max_antenna_gain = chandef->chan->max_antenna_gain;
|
|
+ arg.channel.max_antenna_gain = ath10k_get_max_antenna_gain(ar,
|
|
+ chandef->chan->max_antenna_gain);
|
|
|
|
if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
|
|
arg.ssid = arvif->u.ap.ssid;
|
|
@@ -3169,7 +3205,8 @@ static int ath10k_update_channel_list(st
|
|
ch->min_power = 0;
|
|
ch->max_power = channel->max_power * 2;
|
|
ch->max_reg_power = channel->max_reg_power * 2;
|
|
- ch->max_antenna_gain = channel->max_antenna_gain;
|
|
+ ch->max_antenna_gain = ath10k_get_max_antenna_gain(ar,
|
|
+ channel->max_antenna_gain);
|
|
ch->reg_class_id = 0; /* FIXME */
|
|
|
|
/* FIXME: why use only legacy modes, why not any
|