[dpdk-dev] Port 0 Link Down - L2fwd sample application

[Jianbo Liu]

On 8 April 2016 at 09:21, Lu, Wenzhuo <wenzhuo.lu at intel.com> wrote:
> Hi Vivek,
>
>
>> -----Original Message-----
>> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Vivek Gupta
>> Sent: Thursday, April 7, 2016 9:19 PM
>> To: Marc Sune
>> Cc: dev at dpdk.org
>> Subject: Re: [dpdk-dev] Port 0 Link Down - L2fwd sample application
>>

>>
>> ./build/l2fwd -c f -n 4 -- -q 8 -p 0x11  but each time I get error
>> *****************************
>> Checking link status..............
>> Port 0 Link Down
>> Port 1 Link Down
>> ********************************************
>>
>> I tried with test-pmd example but same result.Could you please help to up the
>> link?
>>
>> Port status is as below-
>> Network devices using DPDK-compatible driver
>> ============================================
>> 0000:01:00.0 'Ethernet Controller 10-Gigabit X540-AT2' drv=uio_pci_generic
>> unused=igb_uio
>> 0000:01:00.1 'Ethernet Controller 10-Gigabit X540-AT2' drv=uio_pci_generic
>> unused=igb_uio
>> 0000:06:00.0 'Ethernet Controller 10-Gigabit X540-AT2' drv=uio_pci_generic
>> unused=igb_uio
>> 0000:06:00.1 'Ethernet Controller 10-Gigabit X540-AT2' drv=uio_pci_generic
>> unused=igb_uio
>>
>> Network devices using kernel driver
>> ===================================
>> 0000:81:00.0 'Ethernet Controller 10-Gigabit X540-AT2' if=eth4 drv=ixgbe
>> unused=igb_uio,uio_pci_generic
>> 0000:81:00.1 'Ethernet Controller 10-Gigabit X540-AT2' if=eth5 drv=ixgbe
>> unused=igb_uio,uio_pci_generic
>>
>> Other network devices
>> =====================
>> <none>
>>

I met the same problem with the same NICs.
Please try this patch:

diff --git a/drivers/net/ixgbe/base/ixgbe_x540.c
b/drivers/net/ixgbe/base/ixgbe_x540.c
index 4891702..cd09e38 100644
--- a/drivers/net/ixgbe/base/ixgbe_x540.c
+++ b/drivers/net/ixgbe/base/ixgbe_x540.c
@@ -220,7 +220,7 @@ s32 ixgbe_reset_hw_X540(struct ixgbe_hw *hw)
     ixgbe_clear_tx_pending(hw);

 mac_reset_top:
-    ctrl = IXGBE_CTRL_RST;
+    ctrl = IXGBE_CTRL_RST_MASK;
     ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
     IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
     IXGBE_WRITE_FLUSH(hw);

Thanks!
Jianbo