Hi Alex,
> -----Original Message----- > From: Alexander Kozyrev <akozy...@nvidia.com> > Sent: Friday, 27 January 2023 1:28 > To: dev@dpdk.org > Cc: NBU-Contact-Thomas Monjalon (EXTERNAL) <tho...@monjalon.net>; > ferruh.yi...@amd.com; andrew.rybche...@oktetlabs.ru; Ori Kam > <or...@nvidia.com> > Subject: [PATCH v2 0/4] ethdev: add template table insertion and matching > types > > Bring more flexibility and control over both flow rule insertion > and packet matching mechanisms. Introduce 2 new flow table types: > > 1. Allow a user to specify the insertion type used in template tables. > The insertion type is responsible for choosing the appropriate key > value used to map inserted flow rules into a template table. > > Flow rules can be inserted by calculating the hash value for > the pattern or inserted by index via the new create_by_index() API. > The idea of the index-based insertion is to avoid additional matches > and simply execute predefined actions after jumping to the index. > > The insertion into an already occupied index results in an error. > The old rule must be destroyed first. An index cannot be bigger than > the size of the table, otherwise, the rule is rejected as well. > > 2. Allow a user to specify the hash calculation function used in template > tables. The hash calculation type is responsible for the calculation of > the flow rule index a packet would hit upon arrival at the table. > > Control over this is useful for applications with custom RSS algorithms, > for example. An application can select various packet fields to serve as > a hash calculation source and jump to the appropriate flow rule location. > The RSS hash result will be used as the index in the table. For the linear > hash function, the mapping is one-to-one and the hash result is the index. > For other hash functions, the index is the hash result module table size. > The RSS hash result can be retrieved via modify_field API: HASH_RESULT. > > RFC: > https://patchwork.dpdk.org/project/dpdk/patch/20221214022110.393410-1- > akozy...@nvidia.com/ > v2: changed the behavior in case of insertion into the same index. > > Alexander Kozyrev (4): > ethdev: add template table insertion type > ethdev: add template table hash calculation function > app/testpmd: add template table insertion type > app/testpmd: add template table hash calculation function > > app/test-pmd/cmdline_flow.c | 166 +++++++++++++++++++++++-- > app/test-pmd/config.c | 10 +- > app/test-pmd/testpmd.h | 2 +- > doc/guides/prog_guide/rte_flow.rst | 20 +++ > doc/guides/rel_notes/release_23_03.rst | 10 ++ > lib/ethdev/rte_flow.c | 24 ++++ > lib/ethdev/rte_flow.h | 95 ++++++++++++++ > lib/ethdev/rte_flow_driver.h | 11 ++ > lib/ethdev/version.map | 3 + > 9 files changed, 330 insertions(+), 11 deletions(-) > > -- > 2.18.2 Series-acked-by: Ori Kam <or...@nvidia.com> Best, Ori
