netdev - [PATCH net-next v3 0/3] geneve: Add support for Remote Checksum Offload

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Date:	Thu, 10 Dec 2015 12:37:43 -0800
From:	Tom Herbert <tom@...bertland.com>
To:	<davem@...emloft.net>, <netdev@...r.kernel.org>
CC:	<kernel-team@...com>
Subject: [PATCH net-next v3 0/3] geneve: Add support for Remote Checksum Offload

This patch set adds UDP checksum configuration via netlink and
Remote Checksum Offload for Geneve,

v2:
  - Fix type in commi log

v3:
  - Fix issue of taking sizeof a pointer instead of the actual object (for real)

Testing (10Gbps mlx4):

Single connection TCP_STREAM in netperf

  - No UDP checksums, no RCO
     4371.9 Mbpos

  - UDP checksums enabled, no RCO
     7263.4 Mbps
   
  - UDP checksums enabled, RCO enabled
     7607.6 Mbps

200 TCP_RR streams

  - No UDP checksums, no RCO
    55.05% CPU utilization
    879284.9 tps
    184/231/742 50/90/99% latencies

  - UDP checksums enabled, no RCO
    55.46% CPU utilization
    901785 tps
    176/222/738 50/90/99% latencies

  - UDP checksums enabled, RCO enabled
    52.36% CPU utilization
    910582 tps
    174/218/706 50/90/99% latencies


Tom Herbert (3):
  rco: Clean up casting errors
  geneve: UDP checksum configuration via netlink
  geneve: Remote Checksum Offload support

 drivers/net/geneve.c         | 249 ++++++++++++++++++++++++++++++++++++++-----
 include/net/checksum.h       |   3 +-
 include/net/geneve.h         |  22 +++-
 include/uapi/linux/if_link.h |   6 ++
 4 files changed, 246 insertions(+), 34 deletions(-)

-- 
2.4.6

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