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([10.237.223.157]) by fmsmga001.fm.intel.com with ESMTP; 18 Jul 2022 06:07:18 -0700 From: Cristian Dumitrescu To: dev@dpdk.org Cc: "Kamalakannan R ." Subject: [PATCH 5/9] pipeline: add API for pipeline code generation Date: Mon, 18 Jul 2022 13:07:09 +0000 Message-Id: <20220718130713.339003-5-cristian.dumitrescu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220718130713.339003-1-cristian.dumitrescu@intel.com> References: <20220718130713.339003-1-cristian.dumitrescu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Previously, the C code generation for the pipeline was hidden under the hood; now, we make this an explicit API operation. Besides the functions for the pipeline actions and the pipeline instructions, the generated C source code now includes the pipeline specification structure required for the pipeline configuration operations. Signed-off-by: Cristian Dumitrescu Signed-off-by: Kamalakannan R. --- lib/pipeline/rte_swx_pipeline.c | 94 +++++++++++++++++++++++++++++++++ lib/pipeline/rte_swx_pipeline.h | 25 +++++++++ lib/pipeline/version.map | 3 ++ 3 files changed, 122 insertions(+) diff --git a/lib/pipeline/rte_swx_pipeline.c b/lib/pipeline/rte_swx_pipeline.c index 3e1c6e9edb..52760111fd 100644 --- a/lib/pipeline/rte_swx_pipeline.c +++ b/lib/pipeline/rte_swx_pipeline.c @@ -18,6 +18,7 @@ #include #include "rte_swx_pipeline_internal.h" +#include "rte_swx_pipeline_spec.h" #define CHECK(condition, err_code) \ do { \ @@ -13476,3 +13477,96 @@ pipeline_compile(struct rte_swx_pipeline *p) return status; } + +int +rte_swx_pipeline_codegen(FILE *spec_file, + FILE *code_file, + uint32_t *err_line, + const char **err_msg) + +{ + struct rte_swx_pipeline *p = NULL; + struct pipeline_spec *s = NULL; + struct instruction_group_list *igl = NULL; + struct action *a; + int status = 0; + + /* Check input arguments. */ + if (!spec_file || !code_file) { + if (err_line) + *err_line = 0; + if (err_msg) + *err_msg = "Invalid input argument."; + status = -EINVAL; + goto free; + } + + /* Pipeline configuration. */ + s = pipeline_spec_parse(spec_file, err_line, err_msg); + if (!s) { + status = -EINVAL; + goto free; + } + + status = rte_swx_pipeline_config(&p, 0); + if (status) { + if (err_line) + *err_line = 0; + if (err_msg) + *err_msg = "Pipeline configuration error."; + goto free; + } + + status = pipeline_spec_configure(p, s, err_msg); + if (status) { + if (err_line) + *err_line = 0; + goto free; + } + + /* + * Pipeline code generation. + */ + + /* Instruction Group List (IGL) computation: the pipeline configuration must be done first, + * but there is no need for the pipeline build to be done as well. + */ + igl = instruction_group_list_create(p); + if (!igl) { + if (err_line) + *err_line = 0; + if (err_msg) + *err_msg = "Memory allocation failed."; + status = -ENOMEM; + goto free; + } + + /* Header file inclusion. */ + fprintf(code_file, "#include \"rte_swx_pipeline_internal.h\"\n"); + fprintf(code_file, "#include \"rte_swx_pipeline_spec.h\"\n\n"); + + /* Code generation for the pipeline specification. */ + pipeline_spec_codegen(code_file, s); + fprintf(code_file, "\n"); + + /* Code generation for the action instructions. */ + TAILQ_FOREACH(a, &p->actions, node) { + fprintf(code_file, "/**\n * Action %s\n */\n\n", a->name); + + action_data_codegen(a, code_file); + fprintf(code_file, "\n"); + + action_instr_codegen(a, code_file); + fprintf(code_file, "\n"); + } + + /* Code generation for the pipeline instructions. */ + instruction_group_list_codegen(igl, p, code_file); + +free: + instruction_group_list_free(igl); + rte_swx_pipeline_free(p); + pipeline_spec_free(s); + + return status; +} diff --git a/lib/pipeline/rte_swx_pipeline.h b/lib/pipeline/rte_swx_pipeline.h index c41ca5cb15..2bd019b05f 100644 --- a/lib/pipeline/rte_swx_pipeline.h +++ b/lib/pipeline/rte_swx_pipeline.h @@ -941,6 +941,31 @@ __rte_experimental int rte_swx_pipeline_build(struct rte_swx_pipeline *p); +/** + * Pipeline C code generate based on input specification file + * + * @param[in] spec_file + * Pipeline specification file (.spec) provided as input. + * @param[in] code_file + * Pipeline C language file (.c) to be generated. + * @param[out] err_line + * In case of error and non-NULL, the line number within the *spec* file where + * the error occurred. The first line number in the file is 1. + * @param[out] err_msg + * In case of error and non-NULL, the error message. + * @return + * 0 on success or the following error codes otherwise: + * -EINVAL: Invalid argument; + * -ENOMEM: Not enough space/cannot allocate memory; + * -EEXIST: Resource with the same name already exists. + */ +__rte_experimental +int +rte_swx_pipeline_codegen(FILE *spec_file, + FILE *code_file, + uint32_t *err_line, + const char **err_msg); + /** * Pipeline build from specification file * diff --git a/lib/pipeline/version.map b/lib/pipeline/version.map index 8312307a7a..51165d48cf 100644 --- a/lib/pipeline/version.map +++ b/lib/pipeline/version.map @@ -145,4 +145,7 @@ EXPERIMENTAL { rte_swx_ctl_pipeline_learner_timeout_get; rte_swx_ctl_pipeline_learner_timeout_set; rte_swx_pipeline_hash_func_register; + + #added in 22.11 + rte_swx_pipeline_codegen; }; -- 2.34.1