On 08/02/2011 01:35 PM, Daniel Drake wrote:
Hi, I'm looking at libertas scanning code, and I'm wondering exactly what the cfg80211_scan_request.n_ssids field is supposed to mean. I would guess that it is supposed to indicate how many SSIDs should be explicitly scanned for. However, this doesn't seem to be the case. iwlist eth0 scan essid test iw dev eth0 scan ssid test Both of those commands result in libertas being called with cfg80211_scan_request with n_ssids=1 and the "test" SSID present in cfg80211_scan_request.ssids[0], as expected. iwlist eth0 scan iw dev eth0 scan Both of those commands result in libertas being called with cfg80211_scan_request with n_ssids=1 and a zero-length SSID present in cfg80211_scan_request.ssids[0]. Is this a bug? I would expect it to be passed n_ssids=0 in this case.
I believe n_ssids is the number of probe requests to be sent per channel. It scanning for all SSIDs, one probe request is sent. It is only for passive scanning that we don't need any probes.
-- Regards, Pavel Roskin -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
