netdev - Re: [PATCH] IPoIB: Stop lying about hard_header_len and use skb->cb to stash LL addresses

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]

Date:	Wed, 08 Feb 2012 15:50:18 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	roland@...nel.org
Cc:	eric.dumazet@...il.com, ogerlitz@...lanox.com,
	sean.hefty@...el.com, herbert@...dor.hengli.com.au,
	linux-rdma@...r.kernel.org, shlomop@...lanox.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH] IPoIB: Stop lying about hard_header_len and use
 skb->cb to stash LL addresses

From: Roland Dreier <roland@...nel.org>
Date: Tue,  7 Feb 2012 16:51:21 -0800

> From: Roland Dreier <roland@...estorage.com>
> 
> Commit a0417fa3a18a ("net: Make qdisc_skb_cb upper size bound
> explicit.") made it possible for a netdev driver to use skb->cb
> between its header_ops.create method and its .ndo_start_xmit
> method.  Use this in ipoib_hard_header() to stash away the LL address
> (GID + QPN), instead of the "ipoib_pseudoheader" hack.  This allows
> IPoIB to stop lying about its hard_header_len, which will let us fix
> the L2 check for GRO.
> 
> Signed-off-by: Roland Dreier <roland@...estorage.com>
> ---
> OK, this works for me.  Definitely looks cleaner and also looks
> obvious enough that it's probably even correct.

I'll toss this, and Eric's updated patch into net-next, thanks!
--
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