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Date: Wed, 17 Aug 2022 15:21:05 +0800
From: shaozhengchao <shaozhengchao@...wei.com>
To: Jamal Hadi Salim <jhs@...atatu.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
<pabeni@...hat.com>, <xiyou.wangcong@...il.com>,
<jiri@...nulli.us>, <weiyongjun1@...wei.com>,
<yuehaibing@...wei.com>
Subject: Re: [PATCH net-next] net: sched: make tcf_action_dump_1() static
On 2022/8/15 19:53, Jamal Hadi Salim wrote:
> You shouldnt have so many line changes to remove the EXPORT and change
> "int" to "static int".
> What am i missing?
> Unnecessary line changes add extra effort to git archeology
>
> cheers,
> jamal
>
> On Mon, Aug 15, 2022 at 2:58 AM Zhengchao Shao <shaozhengchao@...wei.com> wrote:
>>
>> Function tcf_action_dump_1() is not used outside of act_api.c, so remove
>> the superfluous EXPORT_SYMBOL() and marks it static.
>>
>> Signed-off-by: Zhengchao Shao <shaozhengchao@...wei.com>
>> ---
>> include/net/act_api.h | 1 -
>> net/sched/act_api.c | 100 +++++++++++++++++++++---------------------
>> 2 files changed, 49 insertions(+), 52 deletions(-)
>>
>> diff --git a/include/net/act_api.h b/include/net/act_api.h
>> index 9cf6870b526e..d51b3f931771 100644
>> --- a/include/net/act_api.h
>> +++ b/include/net/act_api.h
>> @@ -215,7 +215,6 @@ struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
>> int tcf_action_dump(struct sk_buff *skb, struct tc_action *actions[], int bind,
>> int ref, bool terse);
>> int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
>> -int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
>>
>> static inline void tcf_action_update_bstats(struct tc_action *a,
>> struct sk_buff *skb)
>> diff --git a/net/sched/act_api.c b/net/sched/act_api.c
>> index b69fcde546ba..9fd98bf5c724 100644
>> --- a/net/sched/act_api.c
>> +++ b/net/sched/act_api.c
>> @@ -510,6 +510,55 @@ tcf_action_dump_terse(struct sk_buff *skb, struct tc_action *a, bool from_act)
>> return -1;
>> }
>>
>> +int
>> +tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
>> +{
>> + return a->ops->dump(skb, a, bind, ref);
>> +}
>> +
>> +static int
>> +tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
>> +{
>> + int err = -EINVAL;
>> + unsigned char *b = skb_tail_pointer(skb);
>> + struct nlattr *nest;
>> + u32 flags;
>> +
>> + if (tcf_action_dump_terse(skb, a, false))
>> + goto nla_put_failure;
>> +
>> + if (a->hw_stats != TCA_ACT_HW_STATS_ANY &&
>> + nla_put_bitfield32(skb, TCA_ACT_HW_STATS,
>> + a->hw_stats, TCA_ACT_HW_STATS_ANY))
>> + goto nla_put_failure;
>> +
>> + if (a->used_hw_stats_valid &&
>> + nla_put_bitfield32(skb, TCA_ACT_USED_HW_STATS,
>> + a->used_hw_stats, TCA_ACT_HW_STATS_ANY))
>> + goto nla_put_failure;
>> +
>> + flags = a->tcfa_flags & TCA_ACT_FLAGS_USER_MASK;
>> + if (flags &&
>> + nla_put_bitfield32(skb, TCA_ACT_FLAGS,
>> + flags, flags))
>> + goto nla_put_failure;
>> +
>> + if (nla_put_u32(skb, TCA_ACT_IN_HW_COUNT, a->in_hw_count))
>> + goto nla_put_failure;
>> +
>> + nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
>> + if (!nest)
>> + goto nla_put_failure;
>> + err = tcf_action_dump_old(skb, a, bind, ref);
>> + if (err > 0) {
>> + nla_nest_end(skb, nest);
>> + return err;
>> + }
>> +
>> +nla_put_failure:
>> + nlmsg_trim(skb, b);
>> + return -1;
>> +}
>> static int tcf_dump_walker(struct tcf_idrinfo *idrinfo, struct sk_buff *skb,
>> struct netlink_callback *cb)
>> {
>> @@ -1132,57 +1181,6 @@ static void tcf_action_put_many(struct tc_action *actions[])
>> }
>> }
>>
>> -int
>> -tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
>> -{
>> - return a->ops->dump(skb, a, bind, ref);
>> -}
>> -
>> -int
>> -tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
>> -{
>> - int err = -EINVAL;
>> - unsigned char *b = skb_tail_pointer(skb);
>> - struct nlattr *nest;
>> - u32 flags;
>> -
>> - if (tcf_action_dump_terse(skb, a, false))
>> - goto nla_put_failure;
>> -
>> - if (a->hw_stats != TCA_ACT_HW_STATS_ANY &&
>> - nla_put_bitfield32(skb, TCA_ACT_HW_STATS,
>> - a->hw_stats, TCA_ACT_HW_STATS_ANY))
>> - goto nla_put_failure;
>> -
>> - if (a->used_hw_stats_valid &&
>> - nla_put_bitfield32(skb, TCA_ACT_USED_HW_STATS,
>> - a->used_hw_stats, TCA_ACT_HW_STATS_ANY))
>> - goto nla_put_failure;
>> -
>> - flags = a->tcfa_flags & TCA_ACT_FLAGS_USER_MASK;
>> - if (flags &&
>> - nla_put_bitfield32(skb, TCA_ACT_FLAGS,
>> - flags, flags))
>> - goto nla_put_failure;
>> -
>> - if (nla_put_u32(skb, TCA_ACT_IN_HW_COUNT, a->in_hw_count))
>> - goto nla_put_failure;
>> -
>> - nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
>> - if (nest == NULL)
>> - goto nla_put_failure;
>> - err = tcf_action_dump_old(skb, a, bind, ref);
>> - if (err > 0) {
>> - nla_nest_end(skb, nest);
>> - return err;
>> - }
>> -
>> -nla_put_failure:
>> - nlmsg_trim(skb, b);
>> - return -1;
>> -}
>> -EXPORT_SYMBOL(tcf_action_dump_1);
>> -
>> int tcf_action_dump(struct sk_buff *skb, struct tc_action *actions[],
>> int bind, int ref, bool terse)
>> {
>> --
>> 2.17.1
>>
>
Hi Jamal，
Thank you for your reply. Maybe just declare function in the file
without moving the line number?
Zhengchao Shao
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