linux-kernel - Re: [PATCH net-next v6 0/4] net/sched: retpoline wrappers for tc

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Message-ID: <20221227134706.GA344240@19b382bb30c4>
Date:   Tue, 27 Dec 2022 13:47:06 +0000
From:   Rudi Heitbaum <rudi@...tbaum.com>
To:     Pedro Tammela <pctammela@...atatu.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, jhs@...atatu.com,
        xiyou.wangcong@...il.com, jiri@...nulli.us, kuniyu@...zon.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v6 0/4] net/sched: retpoline wrappers for tc

On Tue, Dec 27, 2022 at 09:24:22AM -0300, Pedro Tammela wrote:
> On 27/12/2022 05:33, Rudi Heitbaum wrote:
> > Hi Pedro,
> > 
> > Compiling kernel 6.2-rc1 fails on x86_64 when CONFIG_NET_CLS or
> > CONFIG_NET_CLS_ACT is not set, when CONFIG_RETPOLINE=y is set.

...

> Hi Rudi,
> 
> Thanks for the report.
> Could you try the following patch?
> 
> diff --git a/include/net/tc_wrapper.h b/include/net/tc_wrapper.h
> index ceed2fc089ff..d323fffb839a 100644
> --- a/include/net/tc_wrapper.h
> +++ b/include/net/tc_wrapper.h
> @@ -216,6 +216,8 @@ static inline int tc_classify(struct sk_buff *skb, const
> struct tcf_proto *tp,
>         return tp->classify(skb, tp, res);
>  }
> 
> +#endif /* CONFIG_NET_CLS */
> +
>  static inline void tc_wrapper_init(void)
>  {
>  #ifdef CONFIG_X86
> @@ -224,8 +226,6 @@ static inline void tc_wrapper_init(void)
>  #endif
>  }
> 
> -#endif /* CONFIG_NET_CLS */
> -
>  #else
> 
>  #define TC_INDIRECT_SCOPE static

Hi Pedro,

I had to adjust it slightly to apply cleanly.
But works correctly with my .config now.

Thanks
Rudi

Tested-by: Rudi Heitbaum <rudi@...tbaum.com>

diff --git a/include/net/tc_wrapper.h b/include/net/tc_wrapper.h
index ceed2fc089ff..d323fffb839a 100644
--- a/include/net/tc_wrapper.h
+++ b/include/net/tc_wrapper.h
@@ -216,6 +216,8 @@
 	return tp->classify(skb, tp, res);
 }
 
+#endif /* CONFIG_NET_CLS */
+
 static inline void tc_wrapper_init(void)
 {
 #ifdef CONFIG_X86
@@ -224,8 +226,6 @@
 #endif
 }
 
-#endif /* CONFIG_NET_CLS */
-
 #else
 
 #define TC_INDIRECT_SCOPE static