Re: [PATCH net-next 05/12] ipv4: ip_tunnel: Unmask upper DSCP bits in ip_tunnel_bind_dev()

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On Thu, Sep 05, 2024 at 07:51:33PM +0300, Ido Schimmel wrote:
> Unmask the upper DSCP bits when initializing an IPv4 flow key via
> ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
> in the future we could perform the FIB lookup according to the full DSCP
> value.
> 
> Signed-off-by: Ido Schimmel <idosch@xxxxxxxxxx>
> ---
>  net/ipv4/ip_tunnel.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
> index 18964394d6bd..b632c128ecb7 100644
> --- a/net/ipv4/ip_tunnel.c
> +++ b/net/ipv4/ip_tunnel.c
> @@ -293,7 +293,7 @@ static int ip_tunnel_bind_dev(struct net_device *dev)
>  
>  		ip_tunnel_init_flow(&fl4, iph->protocol, iph->daddr,
>  				    iph->saddr, tunnel->parms.o_key,
> -				    RT_TOS(iph->tos), dev_net(dev),
> +				    iph->tos & INET_DSCP_MASK, dev_net(dev),

The net/inet_dscp.h header file is only included in patch 6, while it's
needed here in patch 5.

>  				    tunnel->parms.link, tunnel->fwmark, 0, 0);
>  		rt = ip_route_output_key(tunnel->net, &fl4);
>  
> -- 
> 2.46.0
> 





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