diff options
| author |   Jesse Brandeburg <jesse.brandeburg@intel.com> | 2008-07-08 15:51:22 -0700 |
|---|---|---|
| committer |   Jeff Garzik <jgarzik@redhat.com> | 2008-07-11 01:20:27 -0400 |
| commit | a3dc3da02a7c29237ca4ce3ec17f0e1f87ff0a06 (patch) | |
| tree | 427de9c92a8c12385629f6083755dd20d29939e6 /drivers/net/ixgb | |
| parent | ixgb: fix bug in descriptor ring due to prefetch corruption (diff) | |
| download | linux-dev-a3dc3da02a7c29237ca4ce3ec17f0e1f87ff0a06.tar.xz linux-dev-a3dc3da02a7c29237ca4ce3ec17f0e1f87ff0a06.zip | |
ixgb: leave room for extra hardware memory usage
ixgb hardware (not ixgbe) has a problem where it might dma past the
end of a buffer in certain cases. leave 8 bytes extra room.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/ixgb')
| -rw-r--r-- | drivers/net/ixgb/ixgb_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index ecd5252c4bf4..ec8bce154364 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -560,7 +560,7 @@ ixgb_sw_init(struct ixgb_adapter *adapter) hw->subsystem_id = pdev->subsystem_device; hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; - adapter->rx_buffer_len = hw->max_frame_size; + adapter->rx_buffer_len = hw->max_frame_size + 8; /* + 8 for errata */ if((hw->device_id == IXGB_DEVICE_ID_82597EX) || (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4) @@ -1573,7 +1573,7 @@ ixgb_change_mtu(struct net_device *netdev, int new_mtu) return -EINVAL; } - adapter->rx_buffer_len = max_frame; + adapter->rx_buffer_len = max_frame + 8; /* + 8 for errata */ netdev->mtu = new_mtu; |