linux-kernel - Re: [PATCH net-next v2] net/sched: cls_api: complement tcf_tfilter_dump

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Date: Wed, 03 Jan 2024 12:00:24 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Lin Ma <linma@....edu.cn>
Cc: jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2] net/sched: cls_api: complement
 tcf_tfilter_dump_policy

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@...emloft.net>:

On Thu, 28 Dec 2023 14:43:58 +0800 you wrote:
> In function `tc_dump_tfilter`, the attributes array is parsed via
> tcf_tfilter_dump_policy which only describes TCA_DUMP_FLAGS. However,
> the NLA TCA_CHAIN is also accessed with `nla_get_u32`.
> 
> The access to TCA_CHAIN is introduced in commit 5bc1701881e3 ("net:
> sched: introduce multichain support for filters") and no nla_policy is
> provided for parsing at that point. Later on, tcf_tfilter_dump_policy is
> introduced in commit f8ab1807a9c9 ("net: sched: introduce terse dump
> flag") while still ignoring the fact that TCA_CHAIN needs a check. This
> patch does that by complementing the policy to allow the access
> discussed here can be safe as other cases just choose rtm_tca_policy as
> the parsing policy.
> 
> [...]

Here is the summary with links:
  - [net-next,v2] net/sched: cls_api: complement tcf_tfilter_dump_policy
    https://git.kernel.org/netdev/net-next/c/2ab1efad60ad

You are awesome, thank you!
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