diff options
| author |   mikeb <mikeb@openbsd.org> | 2012-05-14 10:14:44 +0000 |
|---|---|---|
| committer | mikeb <mikeb@openbsd.org> | 2012-05-14 10:14:44 +0000 |
| commit | 5dfaf73770a79603ed5099b4f649d811b9150ba2 (patch) | |
| tree | 76955f7ddd55f49f951d9cb9b93ea54aa468fea2 | |
| parent | ansi. no binary change (diff) | |
| download | wireguard-openbsd-5dfaf73770a79603ed5099b4f649d811b9150ba2.tar.xz wireguard-openbsd-5dfaf73770a79603ed5099b4f649d811b9150ba2.zip | |
trigger tx start routine when link goes up to prevent a lockup
situation when send queue is full and no rx interrupt happen.
initial diff and tests by erik lax, <erik at halon.se>, ok jsg
| -rw-r--r-- | sys/dev/pci/if_em.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sys/dev/pci/if_em.c b/sys/dev/pci/if_em.c index 35f9d414280..b3b2f4bc48b 100644 --- a/sys/dev/pci/if_em.c +++ b/sys/dev/pci/if_em.c @@ -31,7 +31,7 @@ POSSIBILITY OF SUCH DAMAGE. ***************************************************************************/ -/* $OpenBSD: if_em.c,v 1.262 2012/02/15 04:06:27 jsg Exp $ */ +/* $OpenBSD: if_em.c,v 1.263 2012/05/14 10:14:44 mikeb Exp $ */ /* $FreeBSD: if_em.c,v 1.46 2004/09/29 18:28:28 mlaier Exp $ */ #include <dev/pci/if_em.h> @@ -877,9 +877,6 @@ em_intr(void *arg) if (ifp->if_flags & IFF_RUNNING) { em_rxeof(sc, -1); em_txeof(sc); - if (!IFQ_IS_EMPTY(&ifp->if_snd)) - em_start(ifp); - refill = 1; } @@ -897,6 +894,9 @@ em_intr(void *arg) refill = 1; } + if (ifp->if_flags & IFF_RUNNING && !IFQ_IS_EMPTY(&ifp->if_snd)) + em_start(ifp); + if (refill && em_rxfill(sc)) { /* Advance the Rx Queue #0 "Tail Pointer". */ E1000_WRITE_REG(&sc->hw, RDT, sc->last_rx_desc_filled); |