[dpdk-dev] [PATCH v4] net/bonding: fix socket id check

["Min Hu (Connor)" <humin29@huawei.com>]

From: Chengchang Tang <tangchengchang@huawei.com>

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: 2efb58cbab6e ("bond: new link bonding library")
Cc: stable@dpdk.org

Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
v4:
* changed type of socket id getting from 'strtol'.
* delete unused comments.

v3:
* changed type of socket id.

v2:
* fixed socket id type.
---
 drivers/net/bonding/rte_eth_bond_args.c | 8 ++++----
 drivers/net/bonding/rte_eth_bond_pmd.c  | 5 +++--
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/bonding/rte_eth_bond_args.c b/drivers/net/bonding/rte_eth_bond_args.c
index 8c5f90d..dc68e52 100644
--- a/drivers/net/bonding/rte_eth_bond_args.c
+++ b/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;
diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index 2e9cea5..2f7d6ad 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -3333,8 +3333,9 @@ 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;
 
-- 
2.7.4