Linux Virtualization - May 2021 - [PATCH 4/4] tun: indicate support for USO feature

Signed-off-by: Yuri Benditovich <yuri.benditovich at daynix.com>
---
 drivers/net/tun.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 84f832806313..a35054f9d941 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -2812,7 +2812,7 @@ static int set_offload(struct tun_struct *tun, unsigned
long arg)
 			arg &= ~(TUN_F_TSO4|TUN_F_TSO6);
 		}
 
-		arg &= ~TUN_F_UFO;
+		arg &= ~(TUN_F_UFO|TUN_F_USO);
 	}
 
 	/* This gives the user a way to test for new features in future by
-- 
2.26.3

? 2021/5/11 ??12:42, Yuri Benditovich ??:
> Signed-off-by: Yuri Benditovich <yuri.benditovich at daynix.com>
> ---
>   drivers/net/tun.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> index 84f832806313..a35054f9d941 100644
> --- a/drivers/net/tun.c
> +++ b/drivers/net/tun.c
> @@ -2812,7 +2812,7 @@ static int set_offload(struct tun_struct *tun,
unsigned long arg)
>   			arg &= ~(TUN_F_TSO4|TUN_F_TSO6);
>   		}
>   
> -		arg &= ~TUN_F_UFO;
> +		arg &= ~(TUN_F_UFO|TUN_F_USO);

It looks to me kernel doesn't use "USO", so TUN_F_UDP_GSO_L4 is a
better
name for this and I guess we should toggle NETIF_F_UDP_GSO_l4 here?

And how about macvtap?

Thanks

>   	}
>   
>   	/* This gives the user a way to test for new features in future by