netdev - Re: [PATCH bpf-next/net 2/6] net: Allow opt-out from global protocol memory accounting.

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Message-ID: <CAAVpQUB=mNuSE4dNWFHZjv2-R37z=2NkNmn3Nv8uwz_3Z-=Nbw@mail.gmail.com>
Date: Tue, 14 Oct 2025 16:24:23 -0700
From: Kuniyuki Iwashima <kuniyu@...gle.com>
To: Martin KaFai Lau <martin.lau@...ux.dev>
Cc: Alexei Starovoitov <ast@...nel.org>, Andrii Nakryiko <andrii@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, John Fastabend <john.fastabend@...il.com>, 
	Stanislav Fomichev <sdf@...ichev.me>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Neal Cardwell <ncardwell@...gle.com>, Willem de Bruijn <willemb@...gle.com>, 
	Mina Almasry <almasrymina@...gle.com>, Roman Gushchin <roman.gushchin@...ux.dev>, 
	Kuniyuki Iwashima <kuni1840@...il.com>, bpf@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH bpf-next/net 2/6] net: Allow opt-out from global protocol
 memory accounting.

On Tue, Oct 14, 2025 at 4:12 PM Martin KaFai Lau <martin.lau@...ux.dev> wrote:
>
> On 10/6/25 5:07 PM, Kuniyuki Iwashima wrote:
> > diff --git a/include/net/sock.h b/include/net/sock.h
> > index 60bcb13f045c..5cf8de6b6bf2 100644
> > --- a/include/net/sock.h
> > +++ b/include/net/sock.h
> > @@ -118,6 +118,7 @@ typedef __u64 __bitwise __addrpair;
> >    *  @skc_reuseport: %SO_REUSEPORT setting
> >    *  @skc_ipv6only: socket is IPV6 only
> >    *  @skc_net_refcnt: socket is using net ref counting
> > + *   @skc_bypass_prot_mem:
>
> While it needs a respin, maybe useful to add comment on "@skc_bypass_prot_mem"

Ah, I forgot to fill the placeholder, will fix it.

Thanks!

>
> >    *  @skc_bound_dev_if: bound device index if != 0
> >    *  @skc_bind_node: bind hash linkage for various protocol lookup tables
> >    *  @skc_portaddr_node: second hash linkage for UDP/UDP-Lite protocol
> > @@ -174,6 +175,7 @@ struct sock_common {
> >       unsigned char           skc_reuseport:1;
> >       unsigned char           skc_ipv6only:1;
> >       unsigned char           skc_net_refcnt:1;
> > +     unsigned char           skc_bypass_prot_mem:1;
> >       int                     skc_bound_dev_if;
> >       union {
> >               struct hlist_node       skc_bind_node;
>
>