It was <2022-09-12 pon 12:40>, when Nathan Huckleberry wrote:
> The ndo_start_xmit field in net_device_ops is expected to be of type
> netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev).
>
> The mismatched return type breaks forward edge kCFI since the underlying
> function definition does not match the function hook definition.
>
> The return type of ax88796c_start_xmit should be changed from int to
> netdev_tx_t.
>
> Reported-by: Dan Carpenter <[email protected]>
> Link: [...]
> Cc: [email protected]
> Signed-off-by: Nathan Huckleberry <[email protected]>
> ---
> drivers/net/ethernet/asix/ax88796c_main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
Acked-by: Lukasz Stelmach <[email protected]>
> diff --git a/drivers/net/ethernet/asix/ax88796c_main.c b/drivers/net/ethernet/asix/ax88796c_main.c
> index 6ba5b024a7be..f1d610efd69e 100644
> --- a/drivers/net/ethernet/asix/ax88796c_main.c
> +++ b/drivers/net/ethernet/asix/ax88796c_main.c
> @@ -381,7 +381,7 @@ static int ax88796c_hard_xmit(struct ax88796c_device *ax_local)
> return 1;
> }
>
> -static int
> +static netdev_tx_t
> ax88796c_start_xmit(struct sk_buff *skb, struct net_device *ndev)
> {
> struct ax88796c_device *ax_local = to_ax88796c_device(ndev);
--
Łukasz Stelmach
Samsung R&D Institute Poland
Samsung Electronics