[][MAC80211][hostapd][Add support to disable ZWDFS CAC when its channel is overlapped with operating channel]
[Description]
Add support to disable ZWDFS CAC when background channel is overlapped
with operating channel
[Release-log]
N/A
Change-Id: I97f344406139655cd0d237884c41a27d6ec0c6fb
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7715801
diff --git a/autobuild_mac80211_release/package/network/services/hostapd_new/patches/mtk-0033-hostapd-mtk-Fix-background-channel-overlapping-opera.patch b/autobuild_mac80211_release/package/network/services/hostapd_new/patches/mtk-0033-hostapd-mtk-Fix-background-channel-overlapping-opera.patch
new file mode 100644
index 0000000..dd121ca
--- /dev/null
+++ b/autobuild_mac80211_release/package/network/services/hostapd_new/patches/mtk-0033-hostapd-mtk-Fix-background-channel-overlapping-opera.patch
@@ -0,0 +1,64 @@
+From 76e54b095fdd8ab65a562c28fba330afcfb519ec Mon Sep 17 00:00:00 2001
+From: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
+Date: Wed, 5 Jul 2023 10:44:15 +0800
+Subject: [PATCH] hostapd: mtk: Fix background channel overlapping operating
+ channel issue
+
+Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
+---
+ src/ap/dfs.c | 18 ++++++++++++++++++
+ 1 file changed, 18 insertions(+)
+
+diff --git a/src/ap/dfs.c b/src/ap/dfs.c
+index 2f5c86e..c9a9c6c 100644
+--- a/src/ap/dfs.c
++++ b/src/ap/dfs.c
+@@ -807,6 +807,20 @@ static int dfs_are_channels_overlapped(struct hostapd_iface *iface, int freq,
+ }
+
+
++static void dfs_check_background_overlapped(struct hostapd_iface *iface)
++{
++ int width = hostapd_get_oper_chwidth(iface->conf);
++
++ if (!dfs_use_radar_background(iface))
++ return;
++
++ if (dfs_are_channels_overlapped(iface, iface->radar_background.freq,
++ width, iface->radar_background.centr_freq_seg0_idx,
++ iface->radar_background.centr_freq_seg1_idx))
++ iface->radar_background.channel = -1;
++}
++
++
+ static unsigned int dfs_get_cac_time(struct hostapd_iface *iface,
+ int start_chan_idx, int n_chans)
+ {
+@@ -1127,6 +1141,8 @@ static void hostpad_dfs_update_background_chain(struct hostapd_iface *iface)
+ &oper_centr_freq_seg1_idx,
+ &channel_type);
+ if (!channel ||
++ channel->chan == iface->conf->channel ||
++ channel->chan == iface->radar_background.channel ||
+ hostapd_start_dfs_cac(iface, iface->conf->hw_mode,
+ channel->freq, channel->chan,
+ iface->conf->ieee80211n,
+@@ -1361,6 +1377,7 @@ static int hostapd_dfs_start_channel_switch_cac(struct hostapd_iface *iface)
+ hostapd_set_oper_centr_freq_seg1_idx(iface->conf,
+ oper_centr_freq_seg1_idx);
+ err = 0;
++ dfs_check_background_overlapped(iface);
+
+ hostapd_setup_interface_complete(iface, err);
+ return err;
+@@ -1488,6 +1505,7 @@ static int hostapd_dfs_start_channel_switch(struct hostapd_iface *iface)
+ hostapd_set_oper_centr_freq_seg1_idx(
+ iface->conf, oper_centr_freq_seg1_idx);
+
++ dfs_check_background_overlapped(iface);
+ hostapd_disable_iface(iface);
+ hostapd_enable_iface(iface);
+ return 0;
+--
+2.18.0
+