netdev - Re: [net-next PATCH RFC 4/8] net: core: add recycle capabilities on skbs via 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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <20181207.231514.1338299086653086987.davem@davemloft.net>
Date:   Fri, 07 Dec 2018 23:15:14 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     brouer@...hat.com
Cc:     netdev@...r.kernel.org, toke@...e.dk, ard.biesheuvel@...aro.org,
        jasowang@...hat.com, ilias.apalodimas@...aro.org,
        bjorn.topel@...el.com, w@....eu, saeedm@...lanox.com,
        mykyta.iziumtsev@...il.com, borkmann@...earbox.net,
        alexei.starovoitov@...il.com, tariqt@...lanox.com
Subject: Re: [net-next PATCH RFC 4/8] net: core: add recycle capabilities
 on skbs via page_pool API

From: Jesper Dangaard Brouer <brouer@...hat.com>
Date: Fri, 07 Dec 2018 00:25:47 +0100

> @@ -744,6 +745,10 @@ struct sk_buff {
>  				head_frag:1,
>  				xmit_more:1,
>  				pfmemalloc:1;
> +	/* TODO: Future idea, extend mem_info with __u8 flags, and
> +	 * move bits head_frag and pfmemalloc there.
> +	 */
> +	struct xdp_mem_info	mem_info;

This is 4 bytes right?

I guess I can live with this.

Please do some microbenchmarks to make sure this doesn't show any
obvious regressions.

Thanks.