[PATCH 10/11] kvargs: make the NULL key to match all entries

[Olivier Matz <olivier.matz-pdR9zngts4EAvxtiuMwx3w@public.gmane.org>]

In rte_kvargs_process() and rte_kvargs_count(), if the key_match
argument is NULL, process all entries.

Signed-off-by: Olivier Matz <olivier.matz-pdR9zngts4EAvxtiuMwx3w@public.gmane.org>
---
 lib/librte_kvargs/rte_kvargs.c | 4 ++--
 lib/librte_kvargs/rte_kvargs.h | 5 +++--
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c
index 1ff7056..3d65437 100644
--- a/lib/librte_kvargs/rte_kvargs.c
+++ b/lib/librte_kvargs/rte_kvargs.c
@@ -139,7 +139,7 @@ rte_kvargs_count(const struct rte_kvargs *kvlist, const char *key_match)
 	ret = 0;
 	for (i = 0; i < kvlist->count; i++) {
 		pair = &kvlist->pairs[i];
-		if (strcmp(pair->key, key_match) == 0)
+		if (key_match == NULL || strcmp(pair->key, key_match) == 0)
 			ret++;
 	}
 
@@ -160,7 +160,7 @@ rte_kvargs_process(const struct rte_kvargs *kvlist,
 
 	for (i = 0; i < kvlist->count; i++) {
 		pair = &kvlist->pairs[i];
-		if (strcmp(pair->key, key_match) == 0) {
+		if (key_match == NULL || strcmp(pair->key, key_match) == 0) {
 			if ((*handler)(pair->key, pair->value, opaque_arg) < 0)
 				return -1;
 		}
diff --git a/lib/librte_kvargs/rte_kvargs.h b/lib/librte_kvargs/rte_kvargs.h
index c080c06..e375547 100644
--- a/lib/librte_kvargs/rte_kvargs.h
+++ b/lib/librte_kvargs/rte_kvargs.h
@@ -120,7 +120,8 @@ void rte_kvargs_free(struct rte_kvargs *kvlist);
  * @param kvlist
  *   The rte_kvargs structure
  * @param key_match
- *   The key on which the handler should be called
+ *   The key on which the handler should be called, or NULL to process handler
+ *   on all associations
  * @param handler
  *   The function to call for each matching key
  * @param opaque_arg
@@ -139,7 +140,7 @@ int rte_kvargs_process(const struct rte_kvargs *kvlist,
  * @param kvlist
  *   The rte_kvargs structure
  * @param key_match
- *   The key that should match
+ *   The key that should match, or NULL to count all associations
 
  * @return
  *   The number of entries
-- 
1.8.4.rc3