bnx2: Refine coalescing parameters.

- Set the USE_INT_PARAM bit so the rx-frames-irq and tx-frames-irq will take
  effect on 5709.
- Increase the default rx-frames to reduce interrupt count.
- Decrease the default rx-frames-irq and tx-frames-irq to catch more events
  during NAPI poll.

All these will reduce interrupts without affecting latency.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index e025833e664f190a75c88ecdc9f82b1d09089bdb..ea6e6b73f494b6a86b197d3036c26e127cf09f94 100644 (file)
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -4921,7 +4921,7 @@ bnx2_init_chip(struct bnx2 *bp)
        }
 
        if (bp->flags & BNX2_FLAG_ONE_SHOT_MSI)
-               val |= BNX2_HC_CONFIG_ONE_SHOT;
+               val |= BNX2_HC_CONFIG_ONE_SHOT | BNX2_HC_CONFIG_USE_INT_PARAM;
 
        REG_WR(bp, BNX2_HC_CONFIG, val);
 
@@ -7858,13 +7858,13 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
 
        bp->rx_csum = 1;
 
-       bp->tx_quick_cons_trip_int = 20;
+       bp->tx_quick_cons_trip_int = 2;
        bp->tx_quick_cons_trip = 20;
-       bp->tx_ticks_int = 80;
+       bp->tx_ticks_int = 18;
        bp->tx_ticks = 80;
 
-       bp->rx_quick_cons_trip_int = 6;
-       bp->rx_quick_cons_trip = 6;
+       bp->rx_quick_cons_trip_int = 2;
+       bp->rx_quick_cons_trip = 12;
        bp->rx_ticks_int = 18;
        bp->rx_ticks = 18;