diff options
| author |   mikeb <mikeb@openbsd.org> | 2014-11-10 16:35:06 +0000 |
|---|---|---|
| committer | mikeb <mikeb@openbsd.org> | 2014-11-10 16:35:06 +0000 |
| commit | 120871acba15b5b1422a25a3397266e7800e8cc2 (patch) | |
| tree | 50dc57bed8ea76b1c3f31c60a5ee7335a5d29e16 | |
| parent | don't try to update the link status every second (diff) | |
| download | wireguard-openbsd-120871acba15b5b1422a25a3397266e7800e8cc2.tar.xz wireguard-openbsd-120871acba15b5b1422a25a3397266e7800e8cc2.zip | |
Gather full statistics only when IX_DEBUG is defined
since most of them can't be retrieved otherwise. This
comes with a slight but measurable performance increase
as well.
Also since the hardware has a single counter for missed
packets including those caused by the insufficient DMA
buffers available, this makes it hard to decipher actual
errors when used with Rx ring length limiting mechanisms
like if_rxr or mclgeti.
| -rw-r--r-- | sys/dev/pci/if_ix.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sys/dev/pci/if_ix.c b/sys/dev/pci/if_ix.c index 3e92936aadd..bd184592c1b 100644 --- a/sys/dev/pci/if_ix.c +++ b/sys/dev/pci/if_ix.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_ix.c,v 1.102 2014/11/10 16:01:18 mikeb Exp $ */ +/* $OpenBSD: if_ix.c,v 1.103 2014/11/10 16:35:06 mikeb Exp $ */ /****************************************************************************** @@ -3260,12 +3260,16 @@ ixgbe_update_stats_counters(struct ix_softc *sc) { struct ifnet *ifp = &sc->arpcom.ac_if; struct ixgbe_hw *hw = &sc->hw; - uint32_t missed_rx = 0, bprc, lxon, lxoff, total; uint64_t total_missed_rx = 0; +#ifdef IX_DEBUG + uint32_t missed_rx = 0, bprc, lxon, lxoff, total; int i; +#endif sc->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); + sc->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); +#ifdef IX_DEBUG for (i = 0; i < 8; i++) { uint32_t mp; mp = IXGBE_READ_REG(hw, IXGBE_MPC(i)); @@ -3318,7 +3322,6 @@ ixgbe_update_stats_counters(struct ix_softc *sc) sc->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); sc->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); sc->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); - sc->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); sc->stats.lxontxc += lxon; @@ -3344,6 +3347,7 @@ ixgbe_update_stats_counters(struct ix_softc *sc) sc->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); sc->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); sc->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); +#endif #if 0 /* Fill out the OS statistics structure */ |