My understanding is that this does not disable auto-negotiation but rather
just sets what is advertised during auto-negotiation as supported rates.
We are working with an rather odd experimental system where we are trying to
create a 10G link between two 82599 based NICs (ATTO FastFrame NS12 with
dual SFP+ modules) over an optical link with 100 msec of latency in each
direction. We are experiencing long delays in getting a link light that we
believe is related to auto-negotiation. We would like to try running
without auto-negotiation. It appears the 82599 controller supports, so
Does the 82599 support 1GbE and 10GbE via SFP+ without auto-negotiation?
I was hoping to get some guidance on how to go about modifying the ixgbe
driver so that I can try 1G and 10G without auto-negotiation.
I need to be able to configure for two test cases:
(1) 10G full duplex no auto-negotiation
(2) 1G full duplex no auto-negotiation
Would something like the following code achieve this? Where would I place
this code.
10G:
reg_data = IXGBE_READ_REG(hw, IXGBE_AUTOC);
reg_data &= ~IXGBE_AUTOC_LMS_MASK;
reg_data |= IXGBE_AUTOC_LMS_10G_LINK_NO_AN;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_data);
IXGBE_WRITE_FLUSH(hw);
1G:
reg_data = IXGBE_READ_REG(hw, IXGBE_AUTOC);
reg_data &= ~IXGBE_AUTOC_LMS_MASK;
reg_data |= IXGBE_AUTOC_LMS_1G_LINK_NO_AN;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_data);
IXGBE_WRITE_FLUSH(hw);
Tantilov, Emil S writes:
> You can use the advertise option of ethtool
>
> ethtool -s eth2 advertise 0x1000 (10Gbps/Full)
>
> ethtool -s eth2 advertise 0x020 (1Gbps/Full)
>
> Check the current and supported modes:
> ethtool eth2
>
> Thanks,
> Emil
>
>
>>-----Original Message-----
>>From: [email protected] [mailto:[email protected]]
>>Sent: Sunday, March 10, 2013 5:12 AM
>>To: [email protected]
>>Subject: [E1000-devel] ixgbe for 82599, how to disable autoneg?
>>
>>I am using the ixgbe driver with an Intel 82599 based NIC, specifically an
>>ATTO FastFrame NS12.
>>
>>My understanding is that the ixgbe driver does not support disabling
>>auto-negotitation (ethtool -s eth2 speed 10000 autoneg off).
>>
>>We have an application that requires running with either a fixed 1G or 10G
>>rate without auto-negotitation.
>>
>>How would I go about modifying the ixgbe driver to support disabling
>>auto-negotiation?
>>
>>---------------------------------------------------------------------------
>>---
>>Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
>>Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
>>endpoint security space. For insight on selecting the right partner to
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>>http://p.sf.net/sfu/symantec-dev2dev
>>_______________________________________________
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>>[email protected]
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>>http://communities.intel.com/community/wired
------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
endpoint security space. For insight on selecting the right partner to
tackle endpoint security challenges, access the full report.
http://p.sf.net/sfu/symantec-dev2dev
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