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** Tags added: verification-needed-vivid

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https://bugs.launchpad.net/bugs/1432848

Title:
  ethtool -t ethX failing with Ubuntu 15.04 (3.19.0-8-generic)
  (Mellanox)

Status in libmlx4 package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  New
Status in libmlx4 source package in Vivid:
  New
Status in linux source package in Vivid:
  Fix Committed

Bug description:
  SRU Justification:

  Impact: Ethtool selftest does not work for Mellanox CX3 / CX3 Pro
  Fix: Upstream development, already tested and proved to work.
  Testcase: 
      Execute "ethtool -t <mellanox_cx3_interface>" and see result FAIL
      Use provided PPA for testing the patch (Received good feedback)

  Obs: Affects only 3.19+ kernels (fixes commit dd65bea)

  ----

  Original Bug Description:

  == Comment: #0 - Carol L. Soto <cls...@us.ibm.com> - 2015-03-16 15:54:40 ==
  ---Problem Description---
  ethtool -t eth18
  The test result is FAIL
  The test extra info:
  Interrupt Test   0
  Link Test        0
  Speed Test       0
  Register Test    0
  Loopback Test    1

  Will see this message in dmesg:
  mlx4_en: eth18: Loopback packet didn't arrive

  Contact Information = Carol Soto/cls...@us.ibm.com

  ---uname output---
  Linux powerio-le21 3.19.0-8-generic #8-Ubuntu SMP Tue Mar 10 13:07:58 UTC 
2015 ppc64le ppc64le ppc64le GNU/Linux

  ---Additional Hardware Info---
  Need a Mellanox RoCE adapter like CX3 40G or CX3 Pro 10G

  Machine Type = P8

  ---Debugger---
  A debugger is not configured

  ---Steps to Reproduce---
   ethtool -t ethX

  Stack trace output:
   no

  Oops output:
   no

  System Dump Info:
    The system is not configured to capture a system dump.

  *Additional Instructions for Carol Soto/cls...@us.ibm.com:
  -Attach sysctl -a output output to the bug.

  == Comment: #1 - Carol L. Soto <cls...@us.ibm.com> - 2015-03-16 15:55:36 ==
  Patch to fix this issue is available in upstream:

  From 1037ebbbd262227a91dfdd558159e345d4edf6b7 Mon Sep 17 00:00:00 2001
  From: Ido Shamay <i...@mellanox.com>
  Date: Mon, 2 Mar 2015 18:22:16 +0200
  Subject: net/mlx4_en: Disbale GRO for incoming loopback/selftest packets

  
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/patch/drivers/net/ethernet/mellanox/mlx4?id=1037ebbbd262227a91dfdd558159e345d4edf6b7

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