e38e54f9c4
Properly update TX statistics for wlan(4). ieee80211_pwrsave() can fail due to queue overflow, check its return code and increment oerrors counter when it fails. Also handle more error cases and update oerrors counter when we don't send mbuf due to some errors. Return ENETDOWN when parent interface isn't ready. Update obytes and omcasts counters in corresponding places. PR: 184626 Differential Revision: https://reviews.freebsd.org/D2621