Adds a new function to get value of a specific key from kvargs list. Signed-off-by: Xueming Li <xuemi...@nvidia.com> --- lib/librte_kvargs/rte_kvargs.c | 20 ++++++++++++++++++++ lib/librte_kvargs/rte_kvargs.h | 14 ++++++++++++++ lib/librte_kvargs/version.map | 1 + 3 files changed, 35 insertions(+)
diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c index 285081c86c..bc734915f9 100644 --- a/lib/librte_kvargs/rte_kvargs.c +++ b/lib/librte_kvargs/rte_kvargs.c @@ -160,6 +160,26 @@ rte_kvargs_free(struct rte_kvargs *kvlist) free(kvlist); } +/* lookup the rte_kvargs structure by key */ +const char * +rte_kvargs_get(struct rte_kvargs *kvlist, const char *key) +{ + unsigned int i; + + if (!kvlist) + return NULL; + for (i = 0; i < kvlist->count; ++i) { + /* Allows key to be NULL. */ + if (!key && !kvlist->pairs[i].key) + return kvlist->pairs[i].value; + if (!key || !kvlist->pairs[i].key) + continue; + if (!strcmp(kvlist->pairs[i].key, key)) + return kvlist->pairs[i].value; + } + return NULL; +} + /* * Parse the arguments "key=value,key=value,..." string and return * an allocated structure that contains a key/value list. Also diff --git a/lib/librte_kvargs/rte_kvargs.h b/lib/librte_kvargs/rte_kvargs.h index eff598e08b..6d426241ea 100644 --- a/lib/librte_kvargs/rte_kvargs.h +++ b/lib/librte_kvargs/rte_kvargs.h @@ -114,6 +114,20 @@ struct rte_kvargs *rte_kvargs_parse_delim(const char *args, */ void rte_kvargs_free(struct rte_kvargs *kvlist); +/** + * Get the value matching the given key + * + * @param kvlist + * The rte_kvargs structure + * @param key + * The key that should match + + * @return + * The value that match, NULL if not found. + */ +__rte_experimental +const char *rte_kvargs_get(struct rte_kvargs *kvlist, const char *key); + /** * Call a handler function for each key/value matching the key * diff --git a/lib/librte_kvargs/version.map b/lib/librte_kvargs/version.map index ed375bf4a3..d6cde16f30 100644 --- a/lib/librte_kvargs/version.map +++ b/lib/librte_kvargs/version.map @@ -14,5 +14,6 @@ EXPERIMENTAL { rte_kvargs_parse_delim; rte_kvargs_strcmp; + rte_kvargs_get; }; -- 2.25.1