net/bonding: fix socket ID check

[ upstream commit f294e04 ]

The socket ID entered by user is cast to an unsigned integer. However,
the value may be an illegal negative value, which may cause some
problems. In this case, an error should be returned.

In addition, the socket ID may be an invalid positive number, which is
also processed in this patch.

Fixes: 2efb58c ("bond: new link bonding library")

Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

drivers/net/bonding/rte_eth_bond_args.c

@@ -200,20 +200,20 @@ int
 bond_ethdev_parse_socket_id_kvarg(const char *key __rte_unused,
 		const char *value, void *extra_args)
 {
-	int socket_id;
+	long socket_id;
 	char *endptr;
 
 	if (value == NULL || extra_args == NULL)
 		return -1;
 
 	errno = 0;
-	socket_id = (uint8_t)strtol(value, &endptr, 10);
+	socket_id = strtol(value, &endptr, 10);
 	if (*endptr != 0 || errno != 0)
 		return -1;
 
 	/* validate socket id value */
-	if (socket_id >= 0) {
-		*(uint8_t *)extra_args = (uint8_t)socket_id;
+	if (socket_id >= 0 && socket_id < RTE_MAX_NUMA_NODES) {
+		*(int *)extra_args = (int)socket_id;
 		return 0;
 	}
 	return -1;

drivers/net/bonding/rte_eth_bond_pmd.c

@@ -3325,8 +3325,9 @@ bond_probe(struct rte_vdev_device *dev)
 	const char *name;
 	struct bond_dev_private *internals;
 	struct rte_kvargs *kvlist;
-	uint8_t bonding_mode, socket_id/*, agg_mode*/;
-	int  arg_count, port_id;
+	uint8_t bonding_mode;
+	int arg_count, port_id;
+	int socket_id;
 	uint8_t agg_mode;
 	struct rte_eth_dev *eth_dev;