netdev - Re: [PATCH bpf-next v2 4/6] net: remove duplicate sk

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Message-ID: <20230613190339.65042-1-kuniyu@amazon.com>
Date: Tue, 13 Jun 2023 12:03:39 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <lmb@...valent.com>
CC: <andrii@...nel.org>, <ast@...nel.org>, <bpf@...r.kernel.org>,
	<daniel@...earbox.net>, <davem@...emloft.net>, <dsahern@...nel.org>,
	<edumazet@...gle.com>, <haoluo@...gle.com>, <hemanthmalla@...il.com>,
	<joe@...d.net.nz>, <john.fastabend@...il.com>, <jolsa@...nel.org>,
	<kpsingh@...nel.org>, <kuba@...nel.org>, <kuniyu@...zon.com>,
	<linux-kernel@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
	<martin.lau@...ux.dev>, <mykolal@...com>, <netdev@...r.kernel.org>,
	<pabeni@...hat.com>, <sdf@...gle.com>, <shuah@...nel.org>, <song@...nel.org>,
	<willemdebruijn.kernel@...il.com>, <yhs@...com>
Subject: Re: [PATCH bpf-next v2 4/6] net: remove duplicate sk_lookup helpers

From: Lorenz Bauer <lmb@...valent.com>
Date: Tue, 13 Jun 2023 11:14:59 +0100
> Now that inet[6]_lookup_reuseport are parameterised on the ehashfn
> we can remove two sk_lookup helpers.
> 
> Signed-off-by: Lorenz Bauer <lmb@...valent.com>
> ---
>  include/net/inet6_hashtables.h |  9 +++++++++
>  include/net/inet_hashtables.h  |  7 +++++++
>  net/ipv4/inet_hashtables.c     | 26 +++++++++++++-------------
>  net/ipv4/udp.c                 | 32 +++++---------------------------
>  net/ipv6/inet6_hashtables.c    | 30 +++++++++++++++---------------
>  net/ipv6/udp.c                 | 34 +++++-----------------------------
>  6 files changed, 54 insertions(+), 84 deletions(-)
> 
> diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h
> index 49d586454287..4d2a1a3c0be7 100644
> --- a/include/net/inet6_hashtables.h
> +++ b/include/net/inet6_hashtables.h
> @@ -73,6 +73,15 @@ struct sock *inet6_lookup_listener(struct net *net,
>  				   const unsigned short hnum,
>  				   const int dif, const int sdif);
>  
> +struct sock *inet6_lookup_run_sk_lookup(struct net *net,

I understand this comes from SEC("sk_lookup"), but this sounds
redundant and run_bpf is clearer for non-BPF folks.