This series extracts the testpmd flow CLI parser into a reusable library, enabling external applications to parse rte_flow rules using testpmd syntax.
Motivation ---------- External applications like Suricata IDS [1] need to express hardware filtering rules in a consistent, human-readable format. Rather than inventing custom syntax, reusing testpmd's well-tested flow grammar provides immediate compatibility with existing documentation and user knowledge. Note: This library provides only one way to create rte_flow structures. Applications can also construct rte_flow_attr, rte_flow_item[], and rte_flow_action[] directly in C code. Design ------ The library (librte_flow_parser) exposes the following APIs: - rte_flow_parser_parse_attr_str(): Parse attributes only - rte_flow_parser_parse_pattern_str(): Parse patterns only - rte_flow_parser_parse_actions_str(): Parse actions only Testpmd is updated to use the library, ensuring a single maintained parser implementation. Testing and Demo ------- - Functional tests in dpdk-test - Example application: examples/flow_parsing Changes ------- v4: - ethdev changes in separate commit - library's public API only exposes attribute, pattern and action parsing, while the full command parsing is kept internal for testpmd usage only. - Addressed Stephen's comments from V3 - dpdk-test now have tests focused on public and internal library functions v3: - Add more functional tests - More concise MAINTAINERS updates - Updated license headers - A thing to note: When playing with flow commands, I figured, some may use non-flow commands, such as raw decap/encap, policy meter and others. Flow parser library itself now supports `set` command to set e.g. the decap/ encap parameters, as the flow syntax only supports defining the index of the encap/decap configs. The library, however, does not support e.g. `create` command to create policy meters, as that is just an ID and it can be created separately using rte_meter APIs. [1] https://github.com/OISF/suricata/pull/13950 Lukas Sismis (7): cmdline: include stddef.h for offsetof ethdev: add RSS type helper APIs flow_parser: add shared parser library app/testpmd: use shared flow parser library examples/flow_parsing: add flow parser demo dpdk-test: add flow parser library functional tests mailmap: update a new contributor email .mailmap | 2 +- MAINTAINERS | 6 +- app/test-pmd/cmd_flex_item.c | 41 +- app/test-pmd/cmdline.c | 268 +- app/test-pmd/config.c | 112 +- app/test-pmd/flow_parser.c | 406 + app/test-pmd/flow_parser.h | 8 + app/test-pmd/flow_parser_cli.c | 149 + app/test-pmd/meson.build | 5 +- app/test-pmd/testpmd.c | 4 + app/test-pmd/testpmd.h | 126 +- app/test/meson.build | 1 + app/test/test_ethdev_api.c | 51 + app/test/test_flow_parser.c | 923 ++ doc/api/doxy-api-index.md | 1 + doc/api/doxy-api.conf.in | 1 + doc/guides/prog_guide/flow_parser_lib.rst | 115 + doc/guides/prog_guide/index.rst | 1 + doc/guides/rel_notes/release_26_03.rst | 9 + examples/flow_parsing/main.c | 291 + examples/flow_parsing/meson.build | 11 + examples/meson.build | 1 + lib/cmdline/cmdline_parse.h | 2 + lib/ethdev/rte_ethdev.c | 107 + lib/ethdev/rte_ethdev.h | 60 + lib/flow_parser/meson.build | 7 + .../flow_parser/rte_flow_parser.c | 11377 ++++++++-------- lib/flow_parser/rte_flow_parser.h | 124 + lib/flow_parser/rte_flow_parser_internal.h | 1236 ++ lib/meson.build | 2 + 30 files changed, 9642 insertions(+), 5805 deletions(-) create mode 100644 app/test-pmd/flow_parser.c create mode 100644 app/test-pmd/flow_parser.h create mode 100644 app/test-pmd/flow_parser_cli.c create mode 100644 app/test/test_flow_parser.c create mode 100644 doc/guides/prog_guide/flow_parser_lib.rst create mode 100644 examples/flow_parsing/main.c create mode 100644 examples/flow_parsing/meson.build create mode 100644 lib/flow_parser/meson.build rename app/test-pmd/cmdline_flow.c => lib/flow_parser/rte_flow_parser.c (55%) create mode 100644 lib/flow_parser/rte_flow_parser.h create mode 100644 lib/flow_parser/rte_flow_parser_internal.h -- 2.43.7
