a293ba5e90
scan_curchan_task() functions) (This part should fix the problem, described in https://lists.freebsd.org/pipermail/freebsd-wireless/2016-January/006420.html) - Rename ss_scan_task into ss_scan_start (better describes it's current purpose) - Utilize taskqueue_*_timeout() functions instead of current mechanism: * reschedule scan_curchan_task() via taskqueue_enqueue_timeout() for every 'maxdwell' msecs (will replace infinite loop + sleeping for 'maxdwell' period via cv_wait()); * rerun the task immediately when an external event occurs (instead of waking it up via cv_signal()) Also, use mtx_sleep() to wait for null frame transmission (allows to drop conditional variable). Tested with: * Intel 3945BG, STA mode; * RTL8188EU, STA mode. Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D5145
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