Searched hist:288052 (Results 1 - 2 of 2) sorted by relevance
| /freebsd-11.0-release/sys/dev/usb/wlan/ | ||
| H A D | if_rsureg.h | diff 288052 Mon Sep 21 02:43:10 MDT 2015 adrian Convert if_rsu to use a deferred transmit task rather than using rsu_start() to do it directly. Ensure that we re-queue starting transmit upon TX completion. This solves two issues: * It stops tx stalls - before this, if the transmit path filled the mbuf queue then it'd never start another transmit. * It enforces ordering - this is very required for 802.11n which requires frames to be transmitted in the order they're queued. Since everything remotely involved in USB has an unlock/thing/relock pattern with that mutex, the only way to guarantee TX ordering is to 100% defer it into a separate thread. This now survives an iperf test and gets a reliable 30mbit/sec. |
| H A D | if_rsu.c | diff 288052 Mon Sep 21 02:43:10 MDT 2015 adrian Convert if_rsu to use a deferred transmit task rather than using rsu_start() to do it directly. Ensure that we re-queue starting transmit upon TX completion. This solves two issues: * It stops tx stalls - before this, if the transmit path filled the mbuf queue then it'd never start another transmit. * It enforces ordering - this is very required for 802.11n which requires frames to be transmitted in the order they're queued. Since everything remotely involved in USB has an unlock/thing/relock pattern with that mutex, the only way to guarantee TX ordering is to 100% defer it into a separate thread. This now survives an iperf test and gets a reliable 30mbit/sec. |
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