The acs_exclude_dfs parameter is documented as a way to exclude DFS
channels when performing ACS without disabling DFS altogether.
The problem is this parameter is only enforced when ACS is offloaded
to the driver (WPA_DRIVER_FLAGS_ACS_OFFLOAD).
So from now on, lets also check acs_exclude_dfs in our ACS
implementation to exclude channels marked with radar detection.
Signed-off-by: Nicolas Escande <nico.escande@xxxxxxxxx>
---
src/ap/acs.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/src/ap/acs.c b/src/ap/acs.c
index ef665052c..e2ac1d0d3 100644
--- a/src/ap/acs.c
+++ b/src/ap/acs.c
@@ -541,6 +541,10 @@ static void acs_survey_mode_interference_factor(
if (!acs_usable_chan(chan))
continue;
+ if ((chan->flag & HOSTAPD_CHAN_RADAR) &&
+ iface->conf->acs_exclude_dfs)
+ continue;
+
if (!is_in_chanlist(iface, chan))
continue;
@@ -671,6 +675,10 @@ acs_find_ideal_chan_mode(struct hostapd_iface *iface,
if (!chan_pri_allowed(chan))
continue;
+ if ((chan->flag & HOSTAPD_CHAN_RADAR) &&
+ iface->conf->acs_exclude_dfs)
+ continue;
+
if (!is_in_chanlist(iface, chan))
continue;
@@ -1045,7 +1053,9 @@ static int * acs_request_scan_add_freqs(struct hostapd_iface *iface,
for (i = 0; i < mode->num_channels; i++) {
chan = &mode->channels[i];
- if (chan->flag & HOSTAPD_CHAN_DISABLED)
+ if (chan->flag & HOSTAPD_CHAN_DISABLED ||
+ ((chan->flag & HOSTAPD_CHAN_RADAR) &&
+ iface->conf->acs_exclude_dfs))
continue;
if (!is_in_chanlist(iface, chan))
--
2.35.1
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