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hostapd: don't select indoor channel on outdoor operation (#2650)

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Don't select channels designated for exclusive-indoor use when the
country3 element is set on outdoor operation.

This effectively prevents from using indoor-only channels in case
outdoor-mode is activated. It can be seen as a safeguard from selecting
inapprpriate channels in a site outdoor-chanlist.

Signed-off-by: David Bauer <mail@david-bauer.net>

Signed-off-by: David Bauer <mail@david-bauer.net>
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David Bauer 2022-10-08 02:51:31 +02:00 committed by GitHub
parent ad481c9f4f
commit ece6a62637
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1 changed files with 74 additions and 0 deletions
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74
patches/openwrt/0008-hostapd-don-t-select-indoor-channel-on-outdoor-operation.patch Normal file
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@ -0,0 +1,74 @@
From: David Bauer <mail@david-bauer.net>
Date: Sat, 10 Sep 2022 01:06:02 +0200
Subject: hostapd: don't select indoor channel on outdoor operation
Don't select channels designated for exclusive-indoor use when the
country3 element is set on outdoor operation.
Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 5110cf7ebdd5af57f98fe4581ce4c5ddb0a2bf86)
diff --git a/package/network/services/hostapd/patches/800-acs-don-t-select-indoor-channel-on-outdoor-operation.patch b/package/network/services/hostapd/patches/800-acs-don-t-select-indoor-channel-on-outdoor-operation.patch
new file mode 100644
index 0000000000000000000000000000000000000000..96ebdefae9e710a350fa44a359896071b142af67
--- /dev/null
+++ b/package/network/services/hostapd/patches/800-acs-don-t-select-indoor-channel-on-outdoor-operation.patch
@@ -0,0 +1,58 @@
+From 37528a5205cb0b9e2238b7d97fb2ff5457448f1c Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Thu, 8 Sep 2022 01:45:41 +0200
+Subject: [PATCH] acs: don't select indoor channel on outdoor operation
+
+Don't select channels designated for exclusive-indoor use when the
+country3 element is set on outdoor operation.
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+---
+ src/ap/acs.c | 9 +++++++++
+ src/ap/dfs.c | 3 +++
+ 2 files changed, 12 insertions(+)
+
+--- a/src/ap/acs.c
++++ b/src/ap/acs.c
+@@ -552,6 +552,9 @@ static void acs_survey_mode_interference
+ if (chan->max_tx_power < iface->conf->min_tx_power)
+ continue;
+
++ if (chan->flag & HOSTAPD_CHAN_INDOOR_ONLY && iface->conf->country[2] == 0x4f)
++ continue;
++
+ wpa_printf(MSG_DEBUG, "ACS: Survey analysis for channel %d (%d MHz)",
+ chan->chan, chan->freq);
+
+@@ -686,6 +689,9 @@ acs_find_ideal_chan_mode(struct hostapd_
+ if (chan->max_tx_power < iface->conf->min_tx_power)
+ continue;
+
++ if (chan->flag & HOSTAPD_CHAN_INDOOR_ONLY && iface->conf->country[2] == 0x4f)
++ continue;
++
+ if (!chan_bw_allowed(chan, bw, 1, 1)) {
+ wpa_printf(MSG_DEBUG,
+ "ACS: Channel %d: BW %u is not supported",
+@@ -1065,6 +1071,9 @@ static int * acs_request_scan_add_freqs(
+ if (chan->max_tx_power < iface->conf->min_tx_power)
+ continue;
+
++ if (chan->flag & HOSTAPD_CHAN_INDOOR_ONLY && iface->conf->country[2] == 0x4f)
++ continue;
++
+ *freq++ = chan->freq;
+ }
+
+--- a/src/ap/dfs.c
++++ b/src/ap/dfs.c
+@@ -282,6 +282,9 @@ static int dfs_find_channel(struct hosta
+ if (chan->max_tx_power < iface->conf->min_tx_power)
+ continue;
+
++ if (chan->flag & HOSTAPD_CHAN_INDOOR_ONLY && iface->conf->country[2] == 0x4f)
++ continue;
++
+ if (ret_chan && idx == channel_idx) {
+ wpa_printf(MSG_DEBUG, "Selected channel %d (%d)",
+ chan->freq, chan->chan);