netdev - Re: mmotm 2021-05-19-23-58 uploaded (net/netfilter/nft_set_pipapo

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Date:   Fri, 21 May 2021 09:07:51 +1000
From:   Stephen Rothwell <sfr@...hwell.id.au>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     akpm@...ux-foundation.org, broonie@...nel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-next@...r.kernel.org, mhocko@...e.cz,
        mm-commits@...r.kernel.org, sfr@...b.auug.org.au,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Stefano Brivio <sbrivio@...hat.com>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org
Subject: Re: mmotm 2021-05-19-23-58 uploaded
 (net/netfilter/nft_set_pipapo_avx2.c)

Hi Randy,

On Thu, 20 May 2021 15:40:54 -0700 Randy Dunlap <rdunlap@...radead.org> wrote:
>
> on x86_64:
> (from linux-next, not mmotm)

Yeah, this is caused by a bad merge resolution by me.

> ../net/netfilter/nft_set_pipapo_avx2.c: In function ‘nft_pipapo_avx2_lookup’:
> ../net/netfilter/nft_set_pipapo_avx2.c:1135:10: error: implicit declaration of function ‘nft_pipapo_lookup’; did you mean ‘nft_pipapo_avx2_lookup’? [-Werror=implicit-function-declaration]
>    return nft_pipapo_lookup(net, set, key, ext);
>           ^~~~~~~~~~~~~~~~~

I have added this to the merge resolution today:

diff --git a/include/net/netfilter/nf_tables_core.h b/include/net/netfilter/nf_tables_core.h
index 789e9eadd76d..8652b2514e57 100644
--- a/include/net/netfilter/nf_tables_core.h
+++ b/include/net/netfilter/nf_tables_core.h
@@ -89,6 +89,8 @@ extern const struct nft_set_type nft_set_bitmap_type;
 extern const struct nft_set_type nft_set_pipapo_type;
 extern const struct nft_set_type nft_set_pipapo_avx2_type;
 
+bool nft_pipapo_lookup(const struct net *net, const struct nft_set *set,
+			    const u32 *key, const struct nft_set_ext **ext);
 #ifdef CONFIG_RETPOLINE
 bool nft_rhash_lookup(const struct net *net, const struct nft_set *set,
 		      const u32 *key, const struct nft_set_ext **ext);
@@ -101,8 +103,6 @@ bool nft_hash_lookup_fast(const struct net *net,
 			  const u32 *key, const struct nft_set_ext **ext);
 bool nft_hash_lookup(const struct net *net, const struct nft_set *set,
 		     const u32 *key, const struct nft_set_ext **ext);
-bool nft_pipapo_lookup(const struct net *net, const struct nft_set *set,
-			    const u32 *key, const struct nft_set_ext **ext);
 bool nft_set_do_lookup(const struct net *net, const struct nft_set *set,
 		       const u32 *key, const struct nft_set_ext **ext);
 #else
diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
index 9addc0b447f7..dce866d93fee 100644
--- a/net/netfilter/nft_set_pipapo.c
+++ b/net/netfilter/nft_set_pipapo.c
@@ -408,7 +408,6 @@ int pipapo_refill(unsigned long *map, int len, int rules, unsigned long *dst,
  *
  * Return: true on match, false otherwise.
  */
-INDIRECT_CALLABLE_SCOPE
 bool nft_pipapo_lookup(const struct net *net, const struct nft_set *set,
 		       const u32 *key, const struct nft_set_ext **ext)
 {

It should apply on top of next-20210520 if you want to test it (I
haven't tested it yet, but will later today).
-- 
Cheers,
Stephen Rothwell

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