> On Mon, Dec 20, 2021 at 04:48:23PM +0100, Lorenzo Bianconi wrote: > > On radar detection on the main chain switch to the channel monitored > > by the background chain if we have already performed the CAC there. > > Is it clear that the channel on the background chain, if one is > available with CAC performed, comply with the ETSI uniform spreading > requirements? The comment below feels a bit misleading, but the way > patch 5/9 picks the channel for background CAC might be sufficient for > this. If so, it would be good to note that in the comment here: ack, got your point here. We should force channel_type to DFS_ANY_CHANNEL for ETSI regdmain in hostpad_dfs_update_background_chain() and not just DFS_NO_CAC_YET. I will fix it in next revision. Thanks. Regards, Lorenzo > > > diff --git a/src/ap/dfs.c b/src/ap/dfs.c > > +hostapd_dfs_background_start_channel_switch(struct hostapd_iface *iface, > > > + /* > > + * If background radar detection is supported and radar channel > > + * monitored by background chain is available switch to it without > > + * waiting for the CAC otherwise let's keep a random channel. > > That first part leaves it a bit open whether the random channel part from > the end of the sentence applies in practice for the new operating > channel. It is important to make this clearly describe the functionality > needed to meet uniform spreading requirement. > > -- > Jouni Malinen PGP id EFC895FA >
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