From: Guillaume Nault <gnault@redhat.com>
To: Ido Schimmel <idosch@nvidia.com>
Cc: netdev@vger.kernel.org, netfilter-devel@vger.kernel.org,
davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
edumazet@google.com, dsahern@kernel.org, pablo@netfilter.org,
kadlec@netfilter.org, fw@strlen.de
Subject: Re: [RFC PATCH net-next 1/3] ipv4: Mask upper DSCP bits and ECN bits in NETLINK_FIB_LOOKUP family
Date: Fri, 26 Jul 2024 15:12:08 +0200 [thread overview]
Message-ID: <ZqOgqJWJ9cATghR/@debian> (raw)
In-Reply-To: <20240725131729.1729103-2-idosch@nvidia.com>
On Thu, Jul 25, 2024 at 04:17:27PM +0300, Ido Schimmel wrote:
> The NETLINK_FIB_LOOKUP netlink family can be used to perform a FIB
> lookup according to user provided parameters and communicate the result
> back to user space.
>
> However, unlike other users of the FIB lookup API, the upper DSCP bits
> and the ECN bits of the DS field are not masked, which can result in the
> wrong result being returned.
>
> Solve this by masking the upper DSCP bits and the ECN bits using
> IPTOS_RT_MASK.
Reviewed-by: Guillaume Nault <gnault@redhat.com>
next prev parent reply other threads:[~2024-07-26 13:12 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-25 13:17 [RFC PATCH net-next 0/3] Preparations for FIB rule DSCP selector Ido Schimmel
2024-07-25 13:17 ` [RFC PATCH net-next 1/3] ipv4: Mask upper DSCP bits and ECN bits in NETLINK_FIB_LOOKUP family Ido Schimmel
2024-07-26 13:12 ` Guillaume Nault [this message]
2024-07-25 13:17 ` [RFC PATCH net-next 2/3] netfilter: nft_fib: Mask upper DSCP bits before FIB lookup Ido Schimmel
2024-07-26 13:15 ` Guillaume Nault
2024-07-26 13:32 ` Florian Westphal
2024-07-26 15:40 ` Guillaume Nault
2024-07-28 2:30 ` Florian Westphal
2024-07-28 10:51 ` Ido Schimmel
2024-07-25 13:17 ` [RFC PATCH net-next 3/3] ipv4: Centralize TOS matching Ido Schimmel
2024-07-26 13:17 ` Guillaume Nault
2024-07-28 11:34 ` Ido Schimmel
2024-07-29 16:05 ` Guillaume Nault
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