Re: [PATCH 4/4] tun: indicate support for USO feature

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在 2021/5/11 下午12:42, Yuri Benditovich 写道:
Signed-off-by: Yuri Benditovich <yuri.benditovich@xxxxxxxxxx>
---
  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

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