netdev - Re: [PATCHv2 net 1/2] Revert "net/sched: act_api: move TCA_EXT_WARN

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Date:   Thu, 16 Mar 2023 05:40:52 -0400
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     Hangbin Liu <liuhangbin@...il.com>
Cc:     netdev@...r.kernel.org, Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        David Ahern <dsahern@...nel.org>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Davide Caratti <dcaratti@...hat.com>,
        Pedro Tammela <pctammela@...atatu.com>,
        Marcelo Leitner <mleitner@...hat.com>,
        Phil Sutter <psutter@...hat.com>
Subject: Re: [PATCHv2 net 1/2] Revert "net/sched: act_api: move
 TCA_EXT_WARN_MSG to the correct hierarchy"

On Wed, Mar 15, 2023 at 11:38 PM Hangbin Liu <liuhangbin@...il.com> wrote:
>
> This reverts commit 923b2e30dc9cd05931da0f64e2e23d040865c035.
>
> This is not a correct fix as TCA_EXT_WARN_MSG is not a hierarchy to
> TCA_ACT_TAB. I didn't notice the TC actions use different enum when adding
> TCA_EXT_WARN_MSG. To fix the difference I will add a new WARN enum in
> TCA_ROOT_MAX as Jamal suggested.
>
> Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
> ---
>  net/sched/act_api.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/net/sched/act_api.c b/net/sched/act_api.c
> index 34c508675041..fce522886099 100644
> --- a/net/sched/act_api.c
> +++ b/net/sched/act_api.c
> @@ -1596,12 +1596,12 @@ static int tca_get_fill(struct sk_buff *skb, struct tc_action *actions[],
>         if (tcf_action_dump(skb, actions, bind, ref, false) < 0)
>                 goto out_nlmsg_trim;
>
> +       nla_nest_end(skb, nest);
> +
>         if (extack && extack->_msg &&
>             nla_put_string(skb, TCA_EXT_WARN_MSG, extack->_msg))
>                 goto out_nlmsg_trim;
>
> -       nla_nest_end(skb, nest);
> -
>         nlh->nlmsg_len = skb_tail_pointer(skb) - b;
>
>         return skb->len;

Acked-by: Jamal Hadi Salim <jhs@...atatu.com>

cheers,
jamal

> 2.38.1
>