[PATCH 42/62] net/nfp: use kvargs numeric helpers

[Stephen Hemminger]

nfp_devarg_handle_int() infers overflow from the result being ULONG_MAX
rather than checking errno, so the literal value 18446744073709551615 is
rejected while a genuine overflow of any other value is not detected.

Both users of it parse a boolean, so use rte_kvargs_handle_bool() and
drop the local handler along with the open coded 0/1 check. The
documented "=0" and "=1" forms still work, and the usual spellings such
as "on" and "true" are now accepted as well.

The boolean uses rte_kvargs_process_opt(), so that a bare key with no
value enables the option.

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 drivers/net/nfp/nfp_ethdev.c | 36 ++----------------------------------
 1 file changed, 2 insertions(+), 34 deletions(-)

diff --git a/drivers/net/nfp/nfp_ethdev.c b/drivers/net/nfp/nfp_ethdev.c
index d2da18013c..37005a3cea 100644
--- a/drivers/net/nfp/nfp_ethdev.c
+++ b/drivers/net/nfp/nfp_ethdev.c
@@ -48,28 +48,6 @@ struct nfp_net_init {
 	struct nfp_net_hw_priv *hw_priv;
 };
 
-static int
-nfp_devarg_handle_int(const char *key,
-		const char *value,
-		void *extra_args)
-{
-	char *end_ptr;
-	uint64_t *num = extra_args;
-
-	if (value == NULL)
-		return -EPERM;
-
-	*num = strtoul(value, &end_ptr, 10);
-	if (*num == ULONG_MAX) {
-		PMD_DRV_LOG(ERR, "%s: '%s' is not a valid param.", key, value);
-		return -ERANGE;
-	} else if (value == end_ptr) {
-		return -EPERM;
-	}
-
-	return 0;
-}
-
 static int
 nfp_devarg_parse_bool_para(struct rte_kvargs *kvlist,
 		const char *key_match,
@@ -77,7 +55,6 @@ nfp_devarg_parse_bool_para(struct rte_kvargs *kvlist,
 {
 	int ret;
 	uint32_t count;
-	uint64_t value;
 
 	count = rte_kvargs_count(kvlist, key_match);
 	if (count == 0)
@@ -88,20 +65,11 @@ nfp_devarg_parse_bool_para(struct rte_kvargs *kvlist,
 		return -EINVAL;
 	}
 
-	ret = rte_kvargs_process(kvlist, key_match, &nfp_devarg_handle_int, &value);
+	ret = rte_kvargs_process_opt(kvlist, key_match, rte_kvargs_handle_bool,
+			value_ret);
 	if (ret != 0)
 		return -EINVAL;
 
-	if (value == 1) {
-		*value_ret = true;
-	} else if (value == 0) {
-		*value_ret = false;
-	} else {
-		PMD_DRV_LOG(ERR, "The param does not work, the format is %s=0/1.",
-				key_match);
-		return -EINVAL;
-	}
-
 	return 0;
 }
 
-- 
2.53.0