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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@david-bauer.net>
38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
From cefc52e6b93731c713f1bba1cb5e7e92105b758b Mon Sep 17 00:00:00 2001
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From: David Bauer <mail@david-bauer.net>
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Date: Fri, 3 Jul 2020 23:00:34 +0200
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Subject: [PATCH] dfs: enter DFS state if no available channel is found
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Previously hostapd would not stop transmitting when a DFS event was
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detected and no available channel to switch to was available.
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Disable and re-enable the interface to enter DFS state. This way, TX
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does not happen until the kernel notifies hostapd about the NOP
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expiring.
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Signed-off-by: David Bauer <mail@david-bauer.net>
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---
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src/ap/dfs.c | 11 +++++++++--
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1 file changed, 9 insertions(+), 2 deletions(-)
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--- a/src/ap/dfs.c
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+++ b/src/ap/dfs.c
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@@ -1066,8 +1066,15 @@ static int hostapd_dfs_start_channel_swi
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&oper_centr_freq_seg0_idx,
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&oper_centr_freq_seg1_idx,
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&skip_radar);
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- if (!channel)
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- return err;
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+ if (!channel) {
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+ /*
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+ * Toggle interface state to enter DFS state
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+ * until NOP is finished.
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+ */
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+ hostapd_disable_iface(iface);
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+ hostapd_enable_iface(iface);
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+ return 0;
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+ }
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if (!skip_radar) {
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iface->freq = channel->freq;
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iface->conf->channel = channel->chan;
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