If a value contains a comma, rte_kvargs_tokenize() will split here.
In order to support list syntax [a,b] as value, an extra parsing of
the square brackets is added.

Signed-off-by: Thomas Monjalon <tho...@monjalon.net>
---
 lib/librte_kvargs/rte_kvargs.c | 10 ++++++++++
 test/test/test_kvargs.c        | 17 +++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c
index a28f76945..b0774effb 100644
--- a/lib/librte_kvargs/rte_kvargs.c
+++ b/lib/librte_kvargs/rte_kvargs.c
@@ -44,6 +44,16 @@ rte_kvargs_tokenize(struct rte_kvargs *kvlist, const char 
*params)
                    kvlist->pairs[i].value == NULL)
                        return -1;
 
+               /* Detect list [a,b] to skip comma delimiter in list. */
+               if (kvlist->pairs[i].value[0] == '[') {
+                       /* Parse the end of the list. */
+                       str = strtok_r(NULL, "]", &ctx1);
+                       if (str == NULL)
+                               return -1; /* no closing bracket */
+                       /* Add back the bracket erased by strtok_t(). */
+                       *(str - 1) = ']';
+               }
+
                kvlist->count++;
                str = NULL;
        }
diff --git a/test/test/test_kvargs.c b/test/test/test_kvargs.c
index e6738624e..cb38b385c 100644
--- a/test/test/test_kvargs.c
+++ b/test/test/test_kvargs.c
@@ -137,6 +137,22 @@ static int test_valid_kvargs(void)
        }
        rte_kvargs_free(kvlist);
 
+       /* third test using list as value */
+       args = "foo=[0,1],check=value2";
+       valid_keys = valid_keys_list;
+       kvlist = rte_kvargs_parse(args, valid_keys);
+       if (kvlist == NULL) {
+               printf("rte_kvargs_parse() error");
+               goto fail;
+       }
+       count = kvlist->count;
+       if (count != 2) {
+               printf("invalid count value %d\n", count);
+               rte_kvargs_free(kvlist);
+               goto fail;
+       }
+       rte_kvargs_free(kvlist);
+
        return 0;
 
  fail:
@@ -162,6 +178,7 @@ static int test_invalid_kvargs(void)
                "foo=1,,foo=2",    /* empty key/value */
                "foo=1,foo",       /* no value */
                "foo=1,=2",        /* no key */
+               "foo=[1,2",        /* no closing bracket in value */
                ",=",              /* also test with a smiley */
                NULL };
        const char **args;
-- 
2.19.0

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