[PATCH v2 04/12] mesh: do not set offchanok on DFS channels in non-ETSI

[Markus Theil]

From: Peter Oh <peter.oh at bowerswilkins.com>

mac80211 does not allow mgmt tx to use off channel on
DFS channels in non-ETSI domain, because it will invalidate
CAC result on current operating channel.
(mac80211 commit: 34373d12f3cbb74960a73431138ef619d857996f)
Hence don't set offchanok for mgmt tx in case of DFS channels
in non-ETSI.

Signed-off-by: Peter Oh <peter.oh at bowerswilkins.com>
---
 src/drivers/driver_nl80211.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index ea16d8daf..3a91c7c70 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -7876,7 +7876,11 @@ static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
 	int ret = -1;
 	u8 *buf;
 	struct ieee80211_hdr *hdr;
+	struct hostapd_hw_modes *modes;
 	int offchanok = 1;
+	u16 num_modes, flags;
+	u8 dfs_domain;
+	int i;
 
 	if (is_ap_interface(drv->nlmode) && (int) freq == bss->freq &&
 	    bss->beacon_set)
@@ -7905,6 +7909,21 @@ static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
 		os_memset(bss->rand_addr, 0, ETH_ALEN);
 	}
 
+	if (is_mesh_interface(drv->nlmode)) {
+		modes = nl80211_get_hw_feature_data(bss, &num_modes,
+						    &flags, &dfs_domain);
+		if (dfs_domain != HOSTAPD_DFS_REGION_ETSI &&
+		    ieee80211_is_dfs(bss->freq, modes, num_modes))
+			offchanok = 0;
+		if (modes) {
+			for (i = 0; i < num_modes; i++) {
+				os_free(modes[i].channels);
+				os_free(modes[i].rates);
+			}
+			os_free(modes);
+		}
+	}
+
 	if (is_ap_interface(drv->nlmode) &&
 	    (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
 	     (int) freq == bss->freq || drv->device_ap_sme ||
-- 
2.27.0