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Commit d7018be0 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Jeff Kirsher
Browse files

ixgbe: fix documentation 



The MTU values in the documentation do not match the source.
The source has frame limit of IXGBE_MAX_JUMBO_FRAME_SIZE (9728)
which is MTU of 9710 because of the accounting for Ethernet header
and CRC.

Also, don't refer to the obsolete ifconfig command.

Signed-off-by: default avatarStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent c0a34ebd

Documentation/networking/ixgbe.txt

+7 −7
Original line number Diff line number Diff line
@@ -70,10 +70,10 @@ Avago 1000BASE-T SFP ABCU-5710RZ 
82599-based adapters support all passive and active limiting direct attach

cables that comply with SFF-8431 v4.1 and SFF-8472 v10.4 specifications.



Laser turns off for SFP+ when ifconfig down

Laser turns off for SFP+ when device is down

-------------------------------------------

"ifconfig down" turns off the laser for 82599-based SFP+ fiber adapters.

"ifconfig up" turns on the laser.

"ip link set down" turns off the laser for 82599-based SFP+ fiber adapters.

"ip link set up" turns on the laser.





82598-BASED ADAPTERS
@@ -213,13 +213,13 @@ Additional Configurations 
  ------------

  The driver supports Jumbo Frames for all adapters. Jumbo Frames support is

  enabled by changing the MTU to a value larger than the default of 1500.

  The maximum value for the MTU is 16110.  Use the ifconfig command to

  The maximum value for the MTU is 16110.  Use the ip command to

  increase the MTU size.  For example:



        ifconfig ethx mtu 9000 up

        ip link set dev ethx mtu 9000



  The maximum MTU setting for Jumbo Frames is 16110.  This value coincides

  with the maximum Jumbo Frames size of 16128.

  The maximum MTU setting for Jumbo Frames is 9710.  This value coincides

  with the maximum Jumbo Frames size of 9728.



  Generic Receive Offload, aka GRO

  --------------------------------