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* [dpdk-dev]  [PATCH v2 0/6]: Add LRO support to ixgbe PMD
@ 2015-03-05 11:27 Vlad Zolotarov
  2015-03-05 11:28 ` [dpdk-dev] [PATCH v2 1/6] ixgbe: Cleanups Vlad Zolotarov
                   ` (5 more replies)
  0 siblings, 6 replies; 13+ messages in thread
From: Vlad Zolotarov @ 2015-03-05 11:27 UTC (permalink / raw)
  To: dev

This series adds the missing flow for enabling the LRO in the ethdev and
adds a support for this feature in the ixgbe PMD. There is a big hope that this
initiative is going to be picked up by some Intel developer that would add the LRO support
to other Intel PMDs. ;)
 
The series starts with some cleanup work in the code the final patch (the actual adding of
the LRO support) is going to touch/use/change. There are still quite a few issues in the ixgbe
PMD code left but they have to be a matter of a different series and I've left a few "TODO"
remarks in the code.
 
The LRO ("RSC" in Intel's context) PMD completion handling code follows the same design as the
corresponding Linux and FreeBSD implementation: pass the aggregation's cluster HEAD buffer to
the NEXTP entry of the software ring till EOP is met.
 
HW configuration follows the corresponding specs: this feature is supported only by x540 and
82599 PF devices.
 
The feature has been tested with seastar TCP stack with the following configuration on Tx side:
   - MTU: 400B
   - 100 concurrent TCP connections.
 
The results were:
   - Without LRO: total throughput: 0.12Gbps, coefficient of variance: 1.41%
   - With LRO:    total throughput: 8.21Gbps, coefficient of variance: 0.59%

This is an almost factor 80 improvement.

New in v2:
   - Removed rte_eth_dev_data.lro_bulk_alloc and added ixgbe_hw.rx_bulk_alloc_allowed
     instead.
   - Unified the rx_pkt_bulk callback setting (a separate new patch).
   - Fixed a few styling and spelling issues.

Vlad Zolotarov (6):
  ixgbe: Cleanups
  ixgbe: Bug fix: Properly configure Rx CRC stripping for x540 devices
  ixgbe: Code refactoring
  ixgbe: Unify the rx_pkt_bulk callback initialization
  common_linuxapp: Added CONFIG_RTE_ETHDEV_LRO_SUPPORT option
  ixgbe: Add LRO support

 config/common_linuxapp                  |   1 +
 lib/librte_ether/rte_ethdev.h           |   6 +-
 lib/librte_pmd_ixgbe/ixgbe/ixgbe_type.h |   1 +
 lib/librte_pmd_ixgbe/ixgbe_ethdev.c     |  22 +-
 lib/librte_pmd_ixgbe/ixgbe_ethdev.h     |   5 +
 lib/librte_pmd_ixgbe/ixgbe_rxtx.c       | 869 +++++++++++++++++++++++++++-----
 lib/librte_pmd_ixgbe/ixgbe_rxtx.h       |  26 +-
 7 files changed, 798 insertions(+), 132 deletions(-)

-- 
2.1.0

^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2015-03-05 20:41 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-03-05 11:27 [dpdk-dev] [PATCH v2 0/6]: Add LRO support to ixgbe PMD Vlad Zolotarov
2015-03-05 11:28 ` [dpdk-dev] [PATCH v2 1/6] ixgbe: Cleanups Vlad Zolotarov
2015-03-05 11:28 ` [dpdk-dev] [PATCH v2 2/6] ixgbe: Bug fix: Properly configure Rx CRC stripping for x540 devices Vlad Zolotarov
2015-03-05 11:28 ` [dpdk-dev] [PATCH v2 3/6] ixgbe: Code refactoring Vlad Zolotarov
2015-03-05 11:28 ` [dpdk-dev] [PATCH v2 4/6] ixgbe: Unify the rx_pkt_bulk callback initialization Vlad Zolotarov
2015-03-05 11:28 ` [dpdk-dev] [PATCH v2 5/6] common_linuxapp: Added CONFIG_RTE_ETHDEV_LRO_SUPPORT option Vlad Zolotarov
2015-03-05 13:19   ` Thomas Monjalon
2015-03-05 13:39     ` Vlad Zolotarov
2015-03-05 14:01       ` Thomas Monjalon
2015-03-05 14:18         ` Vlad Zolotarov
2015-03-05 19:13           ` Thomas Monjalon
2015-03-05 20:41             ` Vladislav Zolotarov
2015-03-05 11:28 ` [dpdk-dev] [PATCH v2 6/6] ixgbe: Add LRO support Vlad Zolotarov

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