DFS: Consider non-contiguous channels
When looking for a new operating channel, consider the case of
non-contiguous channels when checking all the needed channels (e.g., the
driver might support channels 36, 38, 40, so look for channels 36+40
explicitly, instead of failing when encountering channel 38).
Signed-off-by: Eliad Peller <eliad@wizery.com>
diff --git a/src/ap/dfs.c b/src/ap/dfs.c
index da6fd46..18030ac 100644
--- a/src/ap/dfs.c
+++ b/src/ap/dfs.c
@@ -122,6 +122,20 @@
}
+static struct hostapd_channel_data *
+dfs_get_chan_data(struct hostapd_hw_modes *mode, int freq, int first_chan_idx)
+{
+ int i;
+
+ for (i = first_chan_idx; i < mode->num_channels; i++) {
+ if (mode->channels[i].freq == freq)
+ return &mode->channels[i];
+ }
+
+ return NULL;
+}
+
+
static int dfs_chan_range_available(struct hostapd_hw_modes *mode,
int first_chan_idx, int num_chans,
int skip_radar)
@@ -135,9 +149,9 @@
first_chan = &mode->channels[first_chan_idx];
for (i = 0; i < num_chans; i++) {
- chan = &mode->channels[first_chan_idx + i];
-
- if (first_chan->freq + i * 20 != chan->freq)
+ chan = dfs_get_chan_data(mode, first_chan->freq + i * 20,
+ first_chan_idx);
+ if (!chan)
return 0;
if (!dfs_channel_available(chan, skip_radar))
