[v3,01/10] ethdev: check return result of rte_eth_dev_info_get
Checks
Commit Message
From: Sinan Kaya <okaya@kernel.org>
rte_class_eth: eth_mac_cmp: The status of this call to rte_eth_dev_info_get
is not checked, potentially leaving dev_info uninitialized.
Signed-off-by: Sinan Kaya <okaya@kernel.org>
---
lib/ethdev/rte_class_eth.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Comments
> From: okaya@kernel.org [mailto:okaya@kernel.org]
> Sent: Friday, 20 January 2023 05.42
>
> From: Sinan Kaya <okaya@kernel.org>
>
> rte_class_eth: eth_mac_cmp: The status of this call to
> rte_eth_dev_info_get
> is not checked, potentially leaving dev_info uninitialized.
>
> Signed-off-by: Sinan Kaya <okaya@kernel.org>
> ---
> lib/ethdev/rte_class_eth.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/lib/ethdev/rte_class_eth.c b/lib/ethdev/rte_class_eth.c
> index 838b3a8f9f..559ce22491 100644
> --- a/lib/ethdev/rte_class_eth.c
> +++ b/lib/ethdev/rte_class_eth.c
> @@ -50,8 +50,10 @@ eth_mac_cmp(const char *key __rte_unused,
> if (rte_ether_unformat_addr(value, &mac) < 0)
> return -1; /* invalid devargs value */
>
> + if (rte_eth_dev_info_get(data->port_id, &dev_info) < 0)
> + return -1;
> +
> /* Return 0 if devargs MAC is matching one of the device MACs. */
> - rte_eth_dev_info_get(data->port_id, &dev_info);
> for (index = 0; index < dev_info.max_mac_addrs; index++)
> if (rte_is_same_ether_addr(&mac, &data->mac_addrs[index]))
> return 0;
> --
> 2.25.1
>
Although rte_eth_dev_info_get() can return various error codes, eth_mac_cmp() returns only 0 or -1, so this is correct.
Reviewed-by: Morten Brørup <mb@smartsharesystems.com>
@@ -50,8 +50,10 @@ eth_mac_cmp(const char *key __rte_unused,
if (rte_ether_unformat_addr(value, &mac) < 0)
return -1; /* invalid devargs value */
+ if (rte_eth_dev_info_get(data->port_id, &dev_info) < 0)
+ return -1;
+
/* Return 0 if devargs MAC is matching one of the device MACs. */
- rte_eth_dev_info_get(data->port_id, &dev_info);
for (index = 0; index < dev_info.max_mac_addrs; index++)
if (rte_is_same_ether_addr(&mac, &data->mac_addrs[index]))
return 0;