Re: [PATCH net-next] net: ip6_tunnel: use tunnel parameters for fill_forward_path route lookup

[David Ahern <dsahern@kernel.org>]

On 7/8/26 6:48 AM, Lorenzo Bianconi wrote:
> Pass source address, output interface and flowlabel (carrying TClass
> and flow label) from the tunnel configuration to the flowi6 struct in
> ip6_tnl_fill_forward_path(), aligning the route lookup with the slow
> path in ipxip6_tnl_xmit().
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> ---
>  net/ipv6/ip6_tunnel.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
> index bf8e40af60b0..557d8637ac57 100644
> --- a/net/ipv6/ip6_tunnel.c
> +++ b/net/ipv6/ip6_tunnel.c
> @@ -1847,6 +1847,10 @@ static int ip6_tnl_fill_forward_path(struct net_device_path_ctx *ctx,
>  	struct ip6_tnl *t = netdev_priv(ctx->dev);
>  	struct flowi6 fl6 = {
>  		.daddr = t->parms.raddr,
> +		.saddr = t->parms.laddr,
> +		.flowi6_oif = t->parms.link,
> +		.flowlabel = t->parms.flowinfo &
> +			     (IPV6_TCLASS_MASK | IPV6_FLOWLABEL_MASK),
>  	};
>  	struct dst_entry *dst;
>  	int err;
> 
> ---
> base-commit: 08030ddb87b4c6c6a2c03c82731b5e188f02f5b9
> change-id: 20260708-ip6ip6-route-lookup-fill_forward_path-9fc45a9118e9
> 
> Best regards,

Reviewed-by: David Ahern <dsahern@kernel.org>