kvargs: new function to get from key and value

[dpdk.git] / lib / kvargs / rte_kvargs.h

diff --git a/lib/kvargs/rte_kvargs.h b/lib/kvargs/rte_kvargs.h
index ba34b1a..135c4b3 100644 (file)
--- a/lib/kvargs/rte_kvargs.h
+++ b/lib/kvargs/rte_kvargs.h
@@ -116,7 +116,7 @@ void rte_kvargs_free(struct rte_kvargs *kvlist);
 /**
  * Get the value associated with a given key.
  *
- * If multiple key matches, the value of the first one is returned.
+ * If multiple keys match, the value of the first one is returned.
  *
  * The memory returned is allocated as part of the rte_kvargs structure,
  * it must never be modified.
@@ -132,6 +132,33 @@ void rte_kvargs_free(struct rte_kvargs *kvlist);
  */
 const char *rte_kvargs_get(const struct rte_kvargs *kvlist, const char *key);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Get the value associated with a given key and value.
+ *
+ * Find the first entry in the kvlist whose key and value match the
+ * ones passed as argument.
+ *
+ * The memory returned is allocated as part of the rte_kvargs structure,
+ * it must never be modified.
+ *
+ * @param kvlist
+ *   A list of rte_kvargs pair of 'key=value'.
+ * @param key
+ *   The matching key. If NULL, any key will match.
+ * @param value
+ *   The matching value. If NULL, any value will match.
+ *
+ * @return
+ *   NULL if no key matches the input,
+ *   a value associated with a matching key otherwise.
+ */
+__rte_experimental
+const char *rte_kvargs_get_with_value(const struct rte_kvargs *kvlist,
+                                     const char *key, const char *value);
+
 /**
  * Call a handler function for each key/value matching the key
  *