From: Xuan Ding <xuan.d...@intel.com> RTE_ETH_RX_OFFLOAD_HEADER_SPLIT offload was introduced some time ago to substitute bit-field header_split in struct rte_eth_rxmode. It allows to enable header split offload with the header size controlled using split_hdr_size in the same structure.
Right now, no single PMD actually supports RTE_ETH_RX_OFFLOAD_HEADER_SPLIT with above definition. Many examples and test apps initialize the field to 0 explicitly. The most of drivers simply ignore split_hdr_size since the offload is not advertised, but some double-check that its value is 0. So the RTE_ETH_RX_OFFLOAD_HEADER_SPLIT and split_header_size field will be removed in DPDK 22.11. Signed-off-by: Xuan Ding <xuan.d...@intel.com> --- doc/guides/rel_notes/deprecation.rst | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 4e5b23c53d..b8114f29ed 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -125,3 +125,7 @@ Deprecation Notices applications should be updated to use the ``dmadev`` library instead, with the underlying HW-functionality being provided by the ``ioat`` or ``idxd`` dma drivers + +* ethdev: After bit-field header split was removed, the ``RTE_ETH_RX_OFFLOAD_HEADER_SPLIT`` +offload and the ``split_hdr_size`` field in structure ``rte_eth_rxmode`` to enable header +split offload are not supported in any PMDs. They will be removed in DPDK 22.11. -- 2.17.1
