From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gaetan Rivet Subject: [PATCH v4 11/20] kvargs: add generic string matching callback Date: Thu, 29 Mar 2018 23:23:35 +0200 Message-ID: References: Cc: Gaetan Rivet To: dev@dpdk.org Return-path: Received: from mail-wm0-f65.google.com (mail-wm0-f65.google.com [74.125.82.65]) by dpdk.org (Postfix) with ESMTP id E85C27CC4 for ; Thu, 29 Mar 2018 23:24:26 +0200 (CEST) Received: by mail-wm0-f65.google.com with SMTP id r82so14019716wme.0 for ; Thu, 29 Mar 2018 14:24:26 -0700 (PDT) In-Reply-To: In-Reply-To: References: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This function can be used as a callback to rte_kvargs_process. This should reduce code duplication. Signed-off-by: Gaetan Rivet --- lib/Makefile | 1 + lib/librte_kvargs/rte_kvargs.c | 10 ++++++++++ lib/librte_kvargs/rte_kvargs.h | 28 ++++++++++++++++++++++++++++ lib/librte_kvargs/rte_kvargs_version.map | 7 +++++++ 4 files changed, 46 insertions(+) diff --git a/lib/Makefile b/lib/Makefile index 1b17526f7..4206485d3 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -5,6 +5,7 @@ include $(RTE_SDK)/mk/rte.vars.mk DIRS-y += librte_compat DIRS-$(CONFIG_RTE_LIBRTE_KVARGS) += librte_kvargs +DEPDIRS-librte_kvargs := librte_compat DIRS-$(CONFIG_RTE_LIBRTE_EAL) += librte_eal DEPDIRS-librte_eal := librte_kvargs DIRS-$(CONFIG_RTE_LIBRTE_PCI) += librte_pci diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c index 0a1abf579..6ee04cbb9 100644 --- a/lib/librte_kvargs/rte_kvargs.c +++ b/lib/librte_kvargs/rte_kvargs.c @@ -180,3 +180,13 @@ rte_kvargs_parse(const char *args, const char * const valid_keys[]) return kvlist; } + +__rte_experimental +int +rte_kvargs_strcmp(const char *key __rte_unused, + const char *value, void *opaque) +{ + const char *str = opaque; + + return -strcmp(str, value); +} diff --git a/lib/librte_kvargs/rte_kvargs.h b/lib/librte_kvargs/rte_kvargs.h index 51b8120b8..c07c6fea5 100644 --- a/lib/librte_kvargs/rte_kvargs.h +++ b/lib/librte_kvargs/rte_kvargs.h @@ -25,6 +25,8 @@ extern "C" { #endif +#include + /** Maximum number of key/value associations */ #define RTE_KVARGS_MAX 32 @@ -121,6 +123,32 @@ int rte_kvargs_process(const struct rte_kvargs *kvlist, unsigned rte_kvargs_count(const struct rte_kvargs *kvlist, const char *key_match); +/** + * Generic kvarg handler for string comparison. + * + * This function can be used for a generic string comparison processing + * on a list of kvargs. + * + * @param key + * kvarg pair key. + * + * @param value + * kvarg pair value. + * + * @param opaque + * Opaque pointer to a string. + * + * @return + * 0 if the strings match. + * !0 otherwise or on error. + * + * Unless strcmp, comparison ordering is not kept. + * In order for rte_kvargs_process to stop processing on match error, + * a negative value is returned even if strcmp had returned a positive one. + */ +__rte_experimental +int rte_kvargs_strcmp(const char *key, const char *value, void *opaque); + #ifdef __cplusplus } #endif diff --git a/lib/librte_kvargs/rte_kvargs_version.map b/lib/librte_kvargs/rte_kvargs_version.map index 2030ec46c..e2f663a88 100644 --- a/lib/librte_kvargs/rte_kvargs_version.map +++ b/lib/librte_kvargs/rte_kvargs_version.map @@ -8,3 +8,10 @@ DPDK_2.0 { local: *; }; + +EXPERIMENTAL { + global: + + rte_kvargs_strcmp; + +} DPDK_2.0; -- 2.11.0