G'day, I'd appreciate a sanity check, as I'm not sure what I am doing. We saw for years that scan results for an OLPC XO-1 laptop would be unreliable in large groups. APs would not be easily found. We presumed other causes until recently. Using monitor mode on another computer, and "iwlist eth0 scan" on the XO-1, I found probe responses from an AP, and ACKs from the host to the AP, but the output omitted the AP. Further, the AP would be missing if there was a probe response from another XO-1 running mesh, and an ACK from the host to that XO-1. Enabling debugging, lbs_ret_scan was reporting "scan response: invalid IE fmt" because the probe response had a zero length SSID IE. Is a zero length SSID IE valid? (We can't change the wireless firmware at this stage.) Background data and dmesg fragments: http://dev.laptop.org/ticket/12757 Patch being tested (lacks signoff and any review): http://dev.laptop.org/git/olpc-kernel/commit/?h=x86-3.3&id=e98f01abce522fb70a3852b23b62205244ef69b8 -- James Cameron http://quozl.linux.org.au/ -- 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
