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bnx2x: Pause settings

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Pause settings
- 1G pause was not working due to missing write to the emac block
  (TX_MODE_FLOW_EN)
- The flow control should use the negotiated result (after autoneg) so
  we should save both the requested autoneg and the result
- The HW credits with flow control at 1G speed were not optimized and
  caused low throughput
- It is recommended to turn off flow control if the MTU is bigger than
  5000B due to internal buffers size

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yaniv Rosner
2008-08-13 15:56:17 -07:00
committed by David S. Miller
parent 57963ed94c
commit 8c99e7b043
4 changed files with 128 additions and 91 deletions
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9
drivers/net/bnx2x_main.c
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@@ -1946,7 +1946,14 @@ static u8 bnx2x_initial_phy_init(struct bnx2x *bp)
u8 rc;
/* Initialize link parameters structure variables */
bp->link_params.mtu = bp->dev->mtu;
/* It is recommended to turn off RX FC for jumbo frames
for better performance */
if (IS_E1HMF(bp))
bp->link_params.req_fc_auto_adv = FLOW_CTRL_BOTH;
else if (bp->dev->mtu > 5000)
bp->link_params.req_fc_auto_adv = FLOW_CTRL_TX;
else
bp->link_params.req_fc_auto_adv = FLOW_CTRL_BOTH;
bnx2x_acquire_phy_lock(bp);
rc = bnx2x_phy_init(&bp->link_params, &bp->link_vars);