netdev - Re: [PATCH net 1/2] net_sched: reject unknown tcfa

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Message-ID: <CAM_iQpVhFmMNLubEg1mbc8C9sXH-bL0r7vBmmwVvC6U-hXNjtg@mail.gmail.com>
Date:   Tue, 28 Aug 2018 09:59:23 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Pirko <jiri@...nulli.us>,
        David Miller <davem@...emloft.net>,
        Davide Caratti <dcaratti@...hat.com>
Subject: Re: [PATCH net 1/2] net_sched: reject unknown tcfa_action values

On Tue, Aug 28, 2018 at 7:25 AM Paolo Abeni <pabeni@...hat.com> wrote:
>
> +int tcf_action_destroy_one(struct tc_action *a, int bind)
> +{
> +       struct tc_action *actions[] = { a, NULL };
> +
> +       return tcf_action_destroy(actions, bind);
> +}

Make it static.


> +
>  static int tcf_action_put(struct tc_action *p)
>  {
>         return __tcf_action_put(p, false);
> @@ -881,17 +888,16 @@ struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
>         if (TC_ACT_EXT_CMP(a->tcfa_action, TC_ACT_GOTO_CHAIN)) {
>                 err = tcf_action_goto_chain_init(a, tp);
>                 if (err) {
> -                       struct tc_action *actions[] = { a, NULL };
> -
> -                       tcf_action_destroy(actions, bind);
>                         NL_SET_ERR_MSG(extack, "Failed to init TC action chain");
> +                       tcf_action_destroy_one(a, bind);
>                         return ERR_PTR(err);
>                 }
>         }
>
>         if (!tcf_action_valid(a->tcfa_action)) {
>                 NL_SET_ERR_MSG(extack, "invalid action value, using TC_ACT_UNSPEC instead");


You need to adjust this extack too.



> -               a->tcfa_action = TC_ACT_UNSPEC;
> +               tcf_action_destroy_one(a, bind);
> +               return ERR_PTR(-EINVAL);
>         }

Thanks.