netdev - Re: [RFC PATCH net-next v1 2/4] net: introduce abstraction for network memory

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <80e14311-61ba-4dda-93bb-991ad4b779df@kernel.org>
Date: Wed, 13 Dec 2023 22:34:43 -0800
From: David Ahern <dsahern@...nel.org>
To: Mina Almasry <almasrymina@...gle.com>, linux-kernel@...r.kernel.org,
 netdev@...r.kernel.org, bpf@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
 x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>,
 Sumit Semwal <sumit.semwal@...aro.org>,
 Christian König <christian.koenig@....com>,
 Michael Chan <michael.chan@...adcom.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>,
 Jesper Dangaard Brouer <hawk@...nel.org>,
 John Fastabend <john.fastabend@...il.com>, Wei Fang <wei.fang@....com>,
 Shenwei Wang <shenwei.wang@....com>, Clark Wang <xiaoning.wang@....com>,
 NXP Linux Team <linux-imx@....com>, Jeroen de Borst <jeroendb@...gle.com>,
 Praveen Kaligineedi <pkaligineedi@...gle.com>,
 Shailend Chand <shailend@...gle.com>, Yisen Zhuang
 <yisen.zhuang@...wei.com>, Salil Mehta <salil.mehta@...wei.com>,
 Jesse Brandeburg <jesse.brandeburg@...el.com>,
 Tony Nguyen <anthony.l.nguyen@...el.com>,
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
 Marcin Wojtas <mw@...ihalf.com>, Russell King <linux@...linux.org.uk>,
 Sunil Goutham <sgoutham@...vell.com>, Geetha sowjanya <gakula@...vell.com>,
 Subbaraya Sundeep <sbhatta@...vell.com>, hariprasad <hkelam@...vell.com>,
 Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>,
 Sean Wang <sean.wang@...iatek.com>, Mark Lee <Mark-MC.Lee@...iatek.com>,
 Lorenzo Bianconi <lorenzo@...nel.org>,
 Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>,
 Horatiu Vultur <horatiu.vultur@...rochip.com>, UNGLinuxDriver@...rochip.com,
 "K. Y. Srinivasan" <kys@...rosoft.com>,
 Haiyang Zhang <haiyangz@...rosoft.com>, Wei Liu <wei.liu@...nel.org>,
 Dexuan Cui <decui@...rosoft.com>, Jassi Brar <jaswinder.singh@...aro.org>,
 Ilias Apalodimas <ilias.apalodimas@...aro.org>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Jose Abreu <joabreu@...opsys.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Siddharth Vadapalli <s-vadapalli@...com>,
 Ravi Gunasekaran <r-gunasekaran@...com>, Roger Quadros <rogerq@...nel.org>,
 Jiawen Wu <jiawenwu@...stnetic.com>, Mengyuan Lou
 <mengyuanlou@...-swift.com>, Ronak Doshi <doshir@...are.com>,
 VMware PV-Drivers Reviewers <pv-drivers@...are.com>,
 Ryder Lee <ryder.lee@...iatek.com>, Shayne Chen <shayne.chen@...iatek.com>,
 Kalle Valo <kvalo@...nel.org>, Juergen Gross <jgross@...e.com>,
 Stefano Stabellini <sstabellini@...nel.org>,
 Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
 Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau
 <martin.lau@...ux.dev>, Song Liu <song@...nel.org>,
 Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>,
 Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>,
 Jiri Olsa <jolsa@...nel.org>, Stefan Hajnoczi <stefanha@...hat.com>,
 Stefano Garzarella <sgarzare@...hat.com>, Shuah Khan <shuah@...nel.org>,
 Mickaël Salaün <mic@...ikod.net>,
 Nathan Chancellor <nathan@...nel.org>,
 Nick Desaulniers <ndesaulniers@...gle.com>, Bill Wendling
 <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>,
 Jason Gunthorpe <jgg@...dia.com>, Shakeel Butt <shakeelb@...gle.com>,
 Yunsheng Lin <linyunsheng@...wei.com>,
 Willem de Bruijn <willemdebruijn.kernel@...il.com>
Subject: Re: [RFC PATCH net-next v1 2/4] net: introduce abstraction for
 network memory

On 12/13/23 7:05 PM, Mina Almasry wrote:
> diff --git a/include/net/netmem.h b/include/net/netmem.h
> new file mode 100644
> index 000000000000..e4309242d8be
> --- /dev/null
> +++ b/include/net/netmem.h
> @@ -0,0 +1,35 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + *
> + * netmem.h
> + *	Author:	Mina Almasry <almasrymina@...gle.com>
> + *	Copyright (C) 2023 Google LLC
> + */
> +
> +#ifndef _NET_NETMEM_H
> +#define _NET_NETMEM_H
> +
> +struct netmem {
> +	union {
> +		struct page page;
> +
> +		/* Stub to prevent compiler implicitly converting from page*
> +		 * to netmem_t* and vice versa.
> +		 *
> +		 * Other memory type(s) net stack would like to support
> +		 * can be added to this union.
> +		 */
> +		void *addr;
> +	};
> +};
> +
> +static inline struct page *netmem_to_page(struct netmem *netmem)
> +{
> +	return &netmem->page;
> +}
> +
> +static inline struct netmem *page_to_netmem(struct page *page)
> +{
> +	return (struct netmem *)page;

container_of; no typecasts.

> +}
> +
> +#endif /* _NET_NETMEM_H */