netdev - Re: [PATCH 3/4 v2 net-next] net: make GRO aware of skb->head

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: <1335975578.22133.580.camel@edumazet-glaptop>
Date:	Wed, 02 May 2012 18:19:38 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alexander Duyck <alexander.h.duyck@...el.com>
Cc:	Alexander Duyck <alexander.duyck@...il.com>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Neal Cardwell <ncardwell@...gle.com>,
	Tom Herbert <therbert@...gle.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Michael Chan <mchan@...adcom.com>,
	Matt Carlson <mcarlson@...adcom.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>,
	Maciej Żenczykowski <maze@...gle.com>
Subject: Re: [PATCH 3/4 v2 net-next] net: make GRO aware of skb->head_frag

On Wed, 2012-05-02 at 09:16 -0700, Alexander Duyck wrote:

> I was working with the out-of-tree ixgbe because I have the option there
> of stripping out FCoE and RSC via a couple of build flags.  The problem
> is I don't know if the head frag stuff will work out very well with
> ixgbe because RSC and FCoE require that we have to use 1K aligned
> receive buffers.  It would require us to make us have to bump up our
> allocation size by NET_SKB_PAD plus skb_shared_info which would likely
> force us up to order 1 pages on most platforms.

What is RSC exactly, and why RSC is used in the build_skb() context ?



--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html