Hi, I've just hit the '/* TODO: remove expired BSSes */' issue, which normally isn't visible that much: -- usecase: My HW I'm working on doesn't really behave, and it can't tx anything unless it is associated to an AP. So, it can't send probe requests, just listen to beacons initially. Except for worse scan results, not really an issue. Now, since sta_bss_list is never cleaned up, once I do a proper active scan, entries for BSSes found will get bss->probe_resp flag set. If I bring the interface down and back up (ie, can't send out probe request once again), I'm not able to scan (or join) any of those networks, since we prefer stored probe response info to that of beacons (ieee80211_rx_bss_info; bss->last_update won't be updated on beacon either). And finally, ieee80211_sta_scan_result will skip expired BSSes, so even it can receive beacons for such networks, they won't be reported back to the user. -- end of usecase So, my question is whether this is being worked on (didn't find any note on this), and if not, what would be the best place to put this to? (I'm not that familiar with mac80211 internals, so any input on this is kindly welcome). In my case, clearing the list on ifdown/up would help, but periodic cleanup would be better, so I'd better go that way (or maybe both). Then, having bss->last_update being updated also by beacons might be a good idea, otherwise we would expire probed networks, right? Thanks, Vlado
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