netdev - Re: [PATCH net-next 03/12] ipv4: icmp: Unmask upper DSCP bits in icmp_route

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Message-ID: <Zs3fpuuLDo7vPBQq@debian>
Date: Tue, 27 Aug 2024 16:16:06 +0200
From: Guillaume Nault <gnault@...hat.com>
To: Ido Schimmel <idosch@...dia.com>
Cc: netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
	pabeni@...hat.com, edumazet@...gle.com, dsahern@...nel.org,
	ast@...nel.org, daniel@...earbox.net, martin.lau@...ux.dev,
	john.fastabend@...il.com, steffen.klassert@...unet.com,
	herbert@...dor.apana.org.au, bpf@...r.kernel.org
Subject: Re: [PATCH net-next 03/12] ipv4: icmp: Unmask upper DSCP bits in
 icmp_route_lookup()

On Tue, Aug 27, 2024 at 02:18:04PM +0300, Ido Schimmel wrote:
> The function is called to resolve a route for an ICMP message that is
> sent in response to a situation. Based on the type of the generated ICMP
> message, the function is either passed the DS field of the packet that
> generated the ICMP message or a DS field that is derived from it.
> 
> Unmask the upper DSCP bits before resolving and output route via
> ip_route_output_key_hash() so that in the future the lookup could be
> performed according to the full DSCP value.

Reviewed-by: Guillaume Nault <gnault@...hat.com>