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| author | Auke Kok <auke-jan.h.kok@intel.com> | 2008-02-11 09:25:56 -0800 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2008-02-11 14:51:40 -0500 |
| commit | 0c254d863338ceff630814bf17cf8e4b61cb8aa3 (patch) | |
| tree | ffad0ddfa0fbd201df414eecc4502afa8e979424 | |
| parent | 23b66e2bc2bcebacab7292d7731b7372065b3f98 (diff) | |
| download | op-kernel-dev-0c254d863338ceff630814bf17cf8e4b61cb8aa3.zip op-kernel-dev-0c254d863338ceff630814bf17cf8e4b61cb8aa3.tar.gz | |
ixgbe: warn when device is in a x4 or lower width slot
It's easy to oversee this issue when working with this card
as evrything will work OK but performance is severely limited
(something like 1.5gbit on a x1 link) if the pci-express
slot does not offer more bandwidth.
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_main.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index ead49e5..576fb51e 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -2778,6 +2778,14 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, hw->mac.type, hw->phy.type, (part_num >> 8), (part_num & 0xff)); + if (link_width <= IXGBE_PCI_LINK_WIDTH_4) { + dev_warn(&pdev->dev, "PCI-Express bandwidth available for " + "this card is not sufficient for optimal " + "performance.\n"); + dev_warn(&pdev->dev, "For optimal performance a x8 " + "PCI-Express slot is required.\n"); + } + /* reset the hardware with the new settings */ ixgbe_start_hw(hw); |
