Previously hostapd would not stop transmitting when a DFS event was
detected and no available channel to switch to was available.
Disable and re-enable the interface to enter DFS state. This way, TX
does not happen until the kernel notifies hostapd about the NOP
expiring.
Signed-off-by: David Bauer <mail@xxxxxxxxxxxxxxx>
---
src/ap/dfs.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/src/ap/dfs.c b/src/ap/dfs.c
index 3c078b9cb..9dddca338 100644
--- a/src/ap/dfs.c
+++ b/src/ap/dfs.c
@@ -1066,8 +1066,16 @@ static int hostapd_dfs_start_channel_switch(struct hostapd_iface *iface)
&oper_centr_freq_seg0_idx,
&oper_centr_freq_seg1_idx,
&skip_radar);
- if (!channel)
- return err;
+ if (!channel) {
+ /*
+ * Toggle interface state to enter DFS state
+ * until NOP is finished.
+ */
+ hostapd_disable_iface(iface);
+ hostapd_enable_iface(iface);
+ return 0;
+ }
+
if (!skip_radar) {
iface->freq = channel->freq;
iface->conf->channel = channel->chan;
--
2.27.0
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