linux-kernel - Re: [PATCH net-next v16 05/13] page

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAHS8izPTqsNQnQWKpDPTxULTFL4vr4k6j9Zw8TQzJVDBMXWMaA@mail.gmail.com>
Date: Wed, 10 Jul 2024 16:42:04 -0700
From: Mina Almasry <almasrymina@...gle.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-doc@...r.kernel.org, linux-alpha@...r.kernel.org, 
	linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org, 
	sparclinux@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
	linux-arch@...r.kernel.org, linux-kselftest@...r.kernel.org, 
	bpf@...r.kernel.org, linux-media@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org, Donald Hunter <donald.hunter@...il.com>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Paolo Abeni <pabeni@...hat.com>, Jonathan Corbet <corbet@....net>, 
	Richard Henderson <richard.henderson@...aro.org>, Ivan Kokshaysky <ink@...assic.park.msu.ru>, 
	Matt Turner <mattst88@...il.com>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
	"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>, Helge Deller <deller@....de>, 
	Andreas Larsson <andreas@...sler.com>, Jesper Dangaard Brouer <hawk@...nel.org>, 
	Ilias Apalodimas <ilias.apalodimas@...aro.org>, Steven Rostedt <rostedt@...dmis.org>, 
	Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
	Arnd Bergmann <arnd@...db.de>, Steffen Klassert <steffen.klassert@...unet.com>, 
	Herbert Xu <herbert@...dor.apana.org.au>, David Ahern <dsahern@...nel.org>, 
	Willem de Bruijn <willemdebruijn.kernel@...il.com>, Shuah Khan <shuah@...nel.org>, 
	Sumit Semwal <sumit.semwal@...aro.org>, Christian König <christian.koenig@....com>, 
	Bagas Sanjaya <bagasdotme@...il.com>, Christoph Hellwig <hch@...radead.org>, 
	Nikolay Aleksandrov <razor@...ckwall.org>, Taehee Yoo <ap420073@...il.com>, 
	Pavel Begunkov <asml.silence@...il.com>, David Wei <dw@...idwei.uk>, Jason Gunthorpe <jgg@...pe.ca>, 
	Yunsheng Lin <linyunsheng@...wei.com>, Shailend Chand <shailend@...gle.com>, 
	Harshitha Ramamurthy <hramamurthy@...gle.com>, Shakeel Butt <shakeel.butt@...ux.dev>, 
	Jeroen de Borst <jeroendb@...gle.com>, Praveen Kaligineedi <pkaligineedi@...gle.com>, linux-mm@...ck.org, 
	Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH net-next v16 05/13] page_pool: devmem support

On Wed, Jul 10, 2024 at 9:49 AM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Wed, 10 Jul 2024 00:17:38 +0000 Mina Almasry wrote:
> > +static inline struct net_iov *__netmem_clear_lsb(netmem_ref netmem)
> > +{
> > +     return (struct net_iov *)((__force unsigned long)netmem & ~NET_IOV);
> > +}
> > +
> > +static inline unsigned long netmem_get_pp_magic(netmem_ref netmem)
> > +{
> > +     return __netmem_clear_lsb(netmem)->pp_magic;
> > +}
> > +
> > +static inline void netmem_or_pp_magic(netmem_ref netmem, unsigned long pp_magic)
> > +{
> > +     __netmem_clear_lsb(netmem)->pp_magic |= pp_magic;
> > +}
> > +
> > +static inline void netmem_clear_pp_magic(netmem_ref netmem)
> > +{
> > +     __netmem_clear_lsb(netmem)->pp_magic = 0;
> > +}
> > +
> > +static inline struct page_pool *netmem_get_pp(netmem_ref netmem)
> > +{
> > +     return __netmem_clear_lsb(netmem)->pp;
> > +}
> > +
> > +static inline void netmem_set_pp(netmem_ref netmem, struct page_pool *pool)
> > +{
> > +     __netmem_clear_lsb(netmem)->pp = pool;
> > +}
>
> Why is all this stuff in the main header? It's really low level.
> Please put helpers which are only used by the core in a header
> under net/core/, like net/core/dev.h

Sorry none of those are only used by net/core/*. Pretty much all of
these are used by include/net/page_pool/helpers.h, and some have
callers in net/core/devmem.c or net/core/skbuff.c

Would you like me to move these pp specific looking ones to
include/net/page_pool/netmem.h or something similar?

-- 
Thanks,
Mina