diff options
| author | Malli Chilakala <mallikarjuna.chilakala@intel.com> | 2005-04-28 19:44:25 -0700 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-05-12 20:48:55 -0400 |
| commit | 1125ecbc0a89db07bb4eb1ba892a23367c3bdeb5 (patch) | |
| tree | 5302b4334c8f1f9ed6984231101e97e761b8b903 /drivers/net | |
| parent | 0e6ef3e02b6f07e37ba1c1abc059f8bee4e0847f (diff) | |
| download | op-kernel-dev-1125ecbc0a89db07bb4eb1ba892a23367c3bdeb5.zip op-kernel-dev-1125ecbc0a89db07bb4eb1ba892a23367c3bdeb5.tar.gz | |
[PATCH] e1000:Adjust flow control watermarks for Jumbo Frames
Adjust flow control watermarks for Jumbo Frames
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 13bde90..24d96c0 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -409,7 +409,10 @@ e1000_down(struct e1000_adapter *adapter) void e1000_reset(struct e1000_adapter *adapter) { + struct net_device *netdev = adapter->netdev; uint32_t pba, manc; + uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; + uint16_t fc_low_water_mark = E1000_FC_LOW_DIFF; /* Repartition Pba for greater than 9k mtu * To take effect CTRL.RST is required. @@ -428,6 +431,16 @@ e1000_reset(struct e1000_adapter *adapter) break; } + if((adapter->hw.mac_type != e1000_82573) && + (adapter->rx_buffer_len > E1000_RXBUFFER_8192)) { + pba -= 8; /* allocate more FIFO for Tx */ + /* send an XOFF when there is enough space in the + * Rx FIFO to hold one extra full size Rx packet + */ + fc_high_water_mark = netdev->mtu + ENET_HEADER_SIZE + + ETHERNET_FCS_SIZE + 1; + fc_low_water_mark = fc_high_water_mark + 8; + } if(adapter->hw.mac_type == e1000_82547) { @@ -442,9 +455,9 @@ e1000_reset(struct e1000_adapter *adapter) /* flow control settings */ adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) - - E1000_FC_HIGH_DIFF; + fc_high_water_mark; adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) - - E1000_FC_LOW_DIFF; + fc_low_water_mark; adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; adapter->hw.fc_send_xon = 1; adapter->hw.fc = adapter->hw.original_fc; |
