Subject: Re: linux-next: manual merge of the netfilter-next tree with the net tree

From: Stephen Rothwell <[email-masked]>
Date: Fri, 21 May 2021 09:12:22 +1000

Hi all,

On Wed, 19 May 2021 14:05:32 +1000 Stephen Rothwell <[email-masked]> wrote:
>
> On Wed, 19 May 2021 09:56:27 +1000 Stephen Rothwell <[email-masked]> wrote:
> >
> > Today's linux-next merge of the netfilter-next tree got a conflict in:
> > 
> >   net/netfilter/nft_set_pipapo.c
> > 
> > between commit:
> > 
> >   f0b3d338064e ("netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version")
> > 
> > from the net tree and commit:
> > 
> >   b1bc08f6474f ("netfilter: nf_tables: prefer direct calls for set lookups")
> > 
> > from the netfilter-next tree.
> > 
> > I fixed it up (I just used the latter) and can carry the fix as necessary. This
> > is now fixed as far as linux-next is concerned, but any non trivial
> > conflicts should be mentioned to your upstream maintainer when your tree
> > is submitted for merging.  You may also want to consider cooperating
> > with the maintainer of the conflicting tree to minimise any particularly
> > complex conflicts.  
> 
> This merge also needs the following merge resolution patch:
> 
> From: Stephen Rothwell <[email-masked]>
> Date: Wed, 19 May 2021 13:48:22 +1000
> Subject: [PATCH] fix up for merge involving nft_pipapo_lookup()
> 
> Signed-off-by: Stephen Rothwell <[email-masked]>
> ---
>  net/netfilter/nft_set_pipapo.h | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/net/netfilter/nft_set_pipapo.h b/net/netfilter/nft_set_pipapo.h
> index d84afb8fa79a..25a75591583e 100644
> --- a/net/netfilter/nft_set_pipapo.h
> +++ b/net/netfilter/nft_set_pipapo.h
> @@ -178,8 +178,6 @@ struct nft_pipapo_elem {
>  
>  int pipapo_refill(unsigned long *map, int len, int rules, unsigned long *dst,
>  		  union nft_pipapo_map_bucket *mt, bool match_only);
> -bool nft_pipapo_lookup(const struct net *net, const struct nft_set *set,
> -		       const u32 *key, const struct nft_set_ext **ext);
>  
>  /**
>   * pipapo_and_field_buckets_4bit() - Intersect 4-bit buckets
> -- 
> 2.30.2

Actually it appears to also need this:

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)
 {

-- 
Cheers,
Stephen Rothwell