diff options
| -rw-r--r-- | sys/dev/pci/if_ix.c | 12 | ||||
| -rw-r--r-- | sys/dev/pci/ixgbe_type.h | 3 |
2 files changed, 12 insertions, 3 deletions
diff --git a/sys/dev/pci/if_ix.c b/sys/dev/pci/if_ix.c index c580c9163c7..13ba32acfb8 100644 --- a/sys/dev/pci/if_ix.c +++ b/sys/dev/pci/if_ix.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_ix.c,v 1.45 2010/10/27 20:48:27 deraadt Exp $ */ +/* $OpenBSD: if_ix.c,v 1.46 2010/11/10 15:23:25 claudio Exp $ */ /****************************************************************************** @@ -657,6 +657,11 @@ ixgbe_init(void *arg) if (sc->hw.mac.type == ixgbe_mac_82599EB) { gpie |= IXGBE_SDP1_GPIEN; gpie |= IXGBE_SDP2_GPIEN; + /* + * Set LL interval to max to reduce the number of low latency + * interrupts hitting the card when the ring is getting full. + */ + gpie |= 0xf << IXGBE_GPIE_LLI_DELAY_SHIFT; } /* Enable Fan Failure Interrupt */ @@ -2483,6 +2488,7 @@ ixgbe_initialize_receive_units(struct ix_softc *sc) uint32_t rxctrl, fctrl, srrctl, rxcsum; uint32_t reta, mrqc, hlreg, linkvec; uint32_t random[10]; + uint32_t llimod = 0; int i; /* @@ -2516,8 +2522,10 @@ ixgbe_initialize_receive_units(struct ix_softc *sc) IXGBE_WRITE_REG(&sc->hw, IXGBE_SRRCTL(0), srrctl); /* Set Queue moderation rate */ + if (sc->hw.mac.type == ixgbe_mac_82599EB) + llimod = IXGBE_EITR_LLI_MOD; for (i = 0; i < IXGBE_MSGS; i++) - IXGBE_WRITE_REG(&sc->hw, IXGBE_EITR(i), DEFAULT_ITR); + IXGBE_WRITE_REG(&sc->hw, IXGBE_EITR(i), DEFAULT_ITR | llimod); /* Set Link moderation lower */ linkvec = sc->num_tx_queues + sc->num_rx_queues; diff --git a/sys/dev/pci/ixgbe_type.h b/sys/dev/pci/ixgbe_type.h index 361ea8861c0..3fa9b69c48f 100644 --- a/sys/dev/pci/ixgbe_type.h +++ b/sys/dev/pci/ixgbe_type.h @@ -1,4 +1,4 @@ -/* $OpenBSD: ixgbe_type.h,v 1.6 2010/02/25 10:56:07 jsg Exp $ */ +/* $OpenBSD: ixgbe_type.h,v 1.7 2010/11/10 15:23:25 claudio Exp $ */ /****************************************************************************** @@ -1077,6 +1077,7 @@ #define IXGBE_GPIE_EIMEN 0x00000040 /* Immediate Interrupt Enable */ #define IXGBE_GPIE_EIAME 0x40000000 #define IXGBE_GPIE_PBA_SUPPORT 0x80000000 +#define IXGBE_GPIE_LLI_DELAY_SHIFT 7 #define IXGBE_GPIE_RSC_DELAY_SHIFT 11 #define IXGBE_GPIE_VTMODE_MASK 0x0000C000 /* VT Mode Mask */ #define IXGBE_GPIE_VTMODE_16 0x00004000 /* 16 VFs 8 queues per VF */ |