Re: [PATCH net-next v2 07/12] xfrm: Unmask upper DSCP bits in xfrm_get_tos()

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On Thu, Aug 29, 2024 at 09:54:54AM +0300, Ido Schimmel wrote:
> The function returns a value that is used to initialize 'flowi4_tos'
> before being passed to the FIB lookup API in the following call chain:
> 
> xfrm_bundle_create()
> 	tos = xfrm_get_tos(fl, family)
> 	xfrm_dst_lookup(..., tos, ...)
> 		__xfrm_dst_lookup(..., tos, ...)
> 			xfrm4_dst_lookup(..., tos, ...)
> 				__xfrm4_dst_lookup(..., tos, ...)
> 					fl4->flowi4_tos = tos
> 					__ip_route_output_key(net, fl4)
> 
> Unmask the upper DSCP bits so that in the future the output route lookup
> could be performed according to the full DSCP value.
> 
> Remove IPTOS_RT_MASK since it is no longer used.

Reviewed-by: Guillaume Nault <gnault@xxxxxxxxxx>





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