netdev - Re: [PATCH v2 1/8] net: expose sock_use_custom_sol

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Date: Tue, 8 Aug 2023 10:21:03 -0700
From: Breno Leitao <leitao@...ian.org>
To: Hugo Villeneuve <hugo@...ovil.com>
Cc: sdf@...gle.com, axboe@...nel.dk, asml.silence@...il.com,
	willemdebruijn.kernel@...il.com,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, io-uring@...r.kernel.org
Subject: Re: [PATCH v2 1/8] net: expose sock_use_custom_sol_socket

Hello  Hugo,

On Tue, Aug 08, 2023 at 12:13:23PM -0400, Hugo Villeneuve wrote:
> On Tue,  8 Aug 2023 06:40:41 -0700
> Breno Leitao <leitao@...ian.org> wrote:
> 
> > Exposing function sock_use_custom_sol_socket(), so it could be used by
> > io_uring subsystem.
> > 
> > This function will be used in the function io_uring_cmd_setsockopt() in
> > the coming patch, so, let's move it to the socket.h header file.
> 
> Hi,
> this description doesn't seem to match the code change below...

I re-read the patch comment and it seems to match what the code does,
so, probably this description only makes sense to me (?).

That said, hat have you understood from reading the description above?

Thanks for the review,

> > ---
> >  include/linux/net.h | 5 +++++
> >  net/socket.c        | 5 -----
> >  2 files changed, 5 insertions(+), 5 deletions(-)
> > 
> > diff --git a/include/linux/net.h b/include/linux/net.h
> > index 41c608c1b02c..14a956e4530e 100644
> > --- a/include/linux/net.h
> > +++ b/include/linux/net.h
> > @@ -355,4 +355,9 @@ u32 kernel_sock_ip_overhead(struct sock *sk);
> >  #define MODULE_ALIAS_NET_PF_PROTO_NAME(pf, proto, name) \
> >  	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
> >  		     name)
> > +
> > +static inline bool sock_use_custom_sol_socket(const struct socket *sock)
> > +{
> > +	return test_bit(SOCK_CUSTOM_SOCKOPT, &sock->flags);
> > +}
> >  #endif	/* _LINUX_NET_H */
> > diff --git a/net/socket.c b/net/socket.c
> > index 1dc23f5298ba..8df54352af83 100644
> > --- a/net/socket.c
> > +++ b/net/socket.c
> > @@ -2216,11 +2216,6 @@ SYSCALL_DEFINE4(recv, int, fd, void __user *, ubuf, size_t, size,
> >  	return __sys_recvfrom(fd, ubuf, size, flags, NULL, NULL);
> >  }
> >  
> > -static bool sock_use_custom_sol_socket(const struct socket *sock)
> > -{
> > -	return test_bit(SOCK_CUSTOM_SOCKOPT, &sock->flags);
> > -}
> > -
> >  /*
> >   *	Set a socket option. Because we don't know the option lengths we have
> >   *	to pass the user mode parameter for the protocols to sort out.
> > -- 
> > 2.34.1
> >