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| author | jfv <jfv@FreeBSD.org> | 2013-08-13 00:25:39 +0000 |
|---|---|---|
| committer | jfv <jfv@FreeBSD.org> | 2013-08-13 00:25:39 +0000 |
| commit | 346033d48721c1b1a962a58bfccf2b821b74277f (patch) | |
| tree | d5292fb5851302d75a27a5122c9f20c1fa608103 | |
| parent | 28bd1409da1e9911c4152b06c5c7b89235e2b17a (diff) | |
| download | FreeBSD-src-346033d48721c1b1a962a58bfccf2b821b74277f.zip FreeBSD-src-346033d48721c1b1a962a58bfccf2b821b74277f.tar.gz | |
Alter the mq_start routine to do a TRYLOCK and call to the locked routine
rather than just queueing. The former code was an attempt at getting
UDP performance up, but there have been customer reports of problems with it,
so the ixgbe approach seems the best solution for now.
| -rw-r--r-- | sys/dev/e1000/if_igb.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/dev/e1000/if_igb.c b/sys/dev/e1000/if_igb.c index 65f4205..6887bcf 100644 --- a/sys/dev/e1000/if_igb.c +++ b/sys/dev/e1000/if_igb.c @@ -972,7 +972,13 @@ igb_mq_start(struct ifnet *ifp, struct mbuf *m) que = &adapter->queues[i]; err = drbr_enqueue(ifp, txr->br, m); - taskqueue_enqueue(que->tq, &txr->txq_task); + if (err) + return (err); + if (IGB_TX_TRYLOCK(txr)) { + err = igb_mq_start_locked(ifp, txr); + IGB_TX_UNLOCK(txr); + } else + taskqueue_enqueue(que->tq, &txr->txq_task); return (err); } |
