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| author |   mikeb <mikeb@openbsd.org> | 2016-02-05 10:34:52 +0000 |
|---|---|---|
| committer | mikeb <mikeb@openbsd.org> | 2016-02-05 10:34:52 +0000 |
| commit | 5d887499c3e293d4043a3051ca5a272ceed1eed4 (patch) | |
| tree | 4d6faa7994aa38ad5c5b572a1f13478dfb9ef01a | |
| parent | Silence warnings from static analyzers; found by jsg@ (diff) | |
| download | wireguard-openbsd-5d887499c3e293d4043a3051ca5a272ceed1eed4.tar.xz wireguard-openbsd-5d887499c3e293d4043a3051ca5a272ceed1eed4.zip | |
Simple moderation of Tx completion notifications
Follow FreeBSD and schedule the next Tx completion event to fire
when about half of the packet segments scheduled for transmission
are consumed.
| -rw-r--r-- | sys/dev/pv/if_xnf.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/dev/pv/if_xnf.c b/sys/dev/pv/if_xnf.c index cf935b4be54..64188624573 100644 --- a/sys/dev/pv/if_xnf.c +++ b/sys/dev/pv/if_xnf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_xnf.c,v 1.16 2016/01/29 18:49:06 mikeb Exp $ */ +/* $OpenBSD: if_xnf.c,v 1.17 2016/02/05 10:34:52 mikeb Exp $ */ /* * Copyright (c) 2015, 2016 Mike Belopuhov @@ -663,7 +663,8 @@ xnf_txeof(struct xnf_softc *sc) if (pkts > 0) { sc->sc_tx_cons = cons; - txr->txr_cons_event = cons + 1; + txr->txr_cons_event = cons + + ((txr->txr_prod - cons) >> 1) + 1; bus_dmamap_sync(sc->sc_dmat, sc->sc_tx_rmap, 0, 0, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); pkts = 0; |