[PATCH v6 0/1] ethdev: introduce protocol based buffer split

[xuan.ding@intel.com]

From: Xuan Ding <xuan.ding@intel.com>

Protocol based buffer split consists of splitting a received packet into
several separate segments based on the packet content. It is useful in some
scenarios, such as GPU acceleration. The splitting will help to enable
true zero copy and hence improve the performance significantly.

This patchset aims to support protocol header split based on current buffer
split. When Rx queue is configured with RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT
offload and corresponding protocol, packets received will be directly split
into different mempools.

v5->v6:
* The header split deprecation notice is sent.
* Refine the documents, protocol header based buffer split can actually
support multi-segment split.
* Add buffer split protocol header capability.
* Fix some format issues.

v4->v5:
* Use protocol and mbuf_offset based buffer split instead of header split.
* Use RTE_PTYPE* instead of enum rte_eth_rx_header_split_protocol_type.
* Improve the description of rte_eth_rxseg_split.proto.

v3->v4:
* Use RTE_ETH_RX_HEADER_SPLIT_NONE instead of 0.

v2->v3:
* Fix a PMD bug.
* Add rx queue header split check.
* Revise the log and doc.

v1->v2:
* Add support for all header split protocol types.

Wenxuan Wu (1):
  ethdev: introduce protocol header based buffer split

 lib/ethdev/rte_ethdev.c | 40 +++++++++++++++++++++++++++++++++-------
 lib/ethdev/rte_ethdev.h | 28 +++++++++++++++++++++++++++-
 2 files changed, 60 insertions(+), 8 deletions(-)

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2.17.1