netdev - Re: [PATCHv2 net-next 7/8] net: sched: cls: add extack support for tc_setup_cb

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Message-ID: <CAOHTApgR-syku46FFtMBr9NGyzPuBoysAW7Zb6RAucV4TdY1+A@mail.gmail.com>
Date:   Thu, 18 Jan 2018 10:38:51 -0500
From:   Alexander Aring <aring@...atatu.com>
To:     Jakub Kicinski <kubakici@...pl>
Cc:     Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiří Pírko <jiri@...nulli.us>,
        David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        kernel@...atatu.com, David Ahern <dsahern@...il.com>
Subject: Re: [PATCHv2 net-next 7/8] net: sched: cls: add extack support for tc_setup_cb_call

Hi,

On Wed, Jan 17, 2018 at 8:25 PM, Jakub Kicinski <kubakici@...pl> wrote:
> On Wed, 17 Jan 2018 17:40:26 -0500, Alexander Aring wrote:
>> diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
>> index 9f88107c29c5..e864ad523800 100644
>> --- a/net/sched/cls_api.c
>> +++ b/net/sched/cls_api.c
>> @@ -1566,21 +1566,26 @@ static int tc_exts_setup_cb_egdev_call(struct tcf_exts *exts,
>>  }
>>
>>  int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts,
>> -                  enum tc_setup_type type, void *type_data, bool err_stop)
>> +                  enum tc_setup_type type, void *type_data, bool err_stop,
>> +                  struct netlink_ext_ack *extack)
>>  {
>>       int ok_count;
>>       int ret;
>>
>>       ret = tcf_block_cb_call(block, type, type_data, err_stop);
>> -     if (ret < 0)
>> +     if (ret < 0) {
>> +             NL_SET_ERR_MSG(extack, "Failed to initialize tcf block");
>
> This has nothing to do with block init.
>
>>               return ret;
>> +     }
>>       ok_count = ret;
>>
>>       if (!exts)
>>               return ok_count;
>>       ret = tc_exts_setup_cb_egdev_call(exts, type, type_data, err_stop);
>> -     if (ret < 0)
>> +     if (ret < 0) {
>> +             NL_SET_ERR_MSG(extack, "Failed to initialize tcf block extensions");
>
> Ditto, plus this is about redirections to other devices (hence
> eg[ress ]dev).  exts part is an internal detail.
>

Ok, I am going to remove this patch.

- Alex