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-rw-r--r--package/kernel/mac80211/patches/570-restrict_dfs_regions.patch82
1 files changed, 82 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/570-restrict_dfs_regions.patch b/package/kernel/mac80211/patches/570-restrict_dfs_regions.patch
new file mode 100644
index 0000000..10157dc
--- /dev/null
+++ b/package/kernel/mac80211/patches/570-restrict_dfs_regions.patch
@@ -0,0 +1,82 @@
+--- a/drivers/net/wireless/ath/ath10k/mac.c
++++ b/drivers/net/wireless/ath/ath10k/mac.c
+@@ -4321,6 +4321,7 @@ static const struct ieee80211_iface_comb
+ BIT(NL80211_CHAN_WIDTH_20) |
+ BIT(NL80211_CHAN_WIDTH_40) |
+ BIT(NL80211_CHAN_WIDTH_80),
++ .radar_detect_regions = BIT(NL80211_DFS_ETSI),
+ #endif
+ },
+ };
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -688,6 +688,7 @@ static const struct ieee80211_iface_comb
+ .beacon_int_infra_match = true,
+ .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
+ BIT(NL80211_CHAN_WIDTH_20),
++ .radar_detect_regions = BIT(NL80211_DFS_ETSI),
+ }
+ #endif
+ };
+--- a/include/net/cfg80211.h
++++ b/include/net/cfg80211.h
+@@ -2620,6 +2620,7 @@ struct ieee80211_iface_limit {
+ * between infrastructure and AP types must match. This is required
+ * only in special cases.
+ * @radar_detect_widths: bitmap of channel widths supported for radar detection
++ * @radar_detect_regions: bitmap of regions supported for radar detection
+ *
+ * With this structure the driver can describe which interface
+ * combinations it supports concurrently.
+@@ -2677,6 +2678,7 @@ struct ieee80211_iface_combination {
+ u8 n_limits;
+ bool beacon_int_infra_match;
+ u8 radar_detect_widths;
++ u8 radar_detect_regions;
+ };
+
+ struct ieee80211_txrx_stypes {
+--- a/net/wireless/util.c
++++ b/net/wireless/util.c
+@@ -1259,6 +1259,7 @@ int cfg80211_can_use_iftype_chan(struct
+ enum cfg80211_chan_mode chanmode,
+ u8 radar_detect)
+ {
++ const struct ieee80211_regdomain *regdom;
+ struct wireless_dev *wdev_iter;
+ u32 used_iftypes = BIT(iftype);
+ int num[NUM_NL80211_IFTYPES];
+@@ -1267,6 +1268,7 @@ int cfg80211_can_use_iftype_chan(struct
+ struct ieee80211_channel *ch;
+ enum cfg80211_chan_mode chmode;
+ int num_different_channels = 0;
++ enum nl80211_dfs_regions region = 0;
+ int total = 1;
+ int i, j;
+
+@@ -1285,6 +1287,14 @@ int cfg80211_can_use_iftype_chan(struct
+ return 0;
+ }
+
++ if (radar_detect) {
++ rcu_read_lock();
++ regdom = rcu_dereference(cfg80211_regdomain);
++ if (regdom)
++ region = regdom->dfs_region;
++ rcu_read_unlock();
++ }
++
+ memset(num, 0, sizeof(num));
+ memset(used_channels, 0, sizeof(used_channels));
+
+@@ -1392,6 +1402,10 @@ int cfg80211_can_use_iftype_chan(struct
+ if (radar_detect && !(c->radar_detect_widths & radar_detect))
+ goto cont;
+
++ if (radar_detect && c->radar_detect_regions &&
++ !(c->radar_detect_regions & BIT(region)))
++ goto cont;
++
+ /*
+ * Finally check that all iftypes that we're currently
+ * using are actually part of this combination. If they