netdev - Re: [PATCH net] net: sched: shrink struct qdisc_skb

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: <20140922.142200.2003937036676881256.davem@davemloft.net>
Date:	Mon, 22 Sep 2014 14:22:00 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	or.gerlitz@...il.com, _govind@....com, yinghai@...nel.org,
	netdev@...r.kernel.org, ssujith@...co.com, gvaradar@...co.com,
	benve@...co.com
Subject: Re: [PATCH net] net: sched: shrink struct qdisc_skb_cb to 28 bytes

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 18 Sep 2014 08:02:05 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> We cannot make struct qdisc_skb_cb bigger without impacting IPoIB,
> or increasing skb->cb[] size.
> 
> Commit e0f31d849867 ("flow_keys: Record IP layer protocol in
> skb_flow_dissect()") broke IPoIB.
> 
> Only current offender is sch_choke, and this one do not need an
> absolutely precise flow key.
> 
> If we store 17 bytes of flow key, its more than enough. (Its the actual
> size of flow_keys if it was a packed structure, but we might add new
> fields at the end of it later)
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Fixes: e0f31d849867 ("flow_keys: Record IP layer protocol in skb_flow_dissect()")

Applied, thanks Eric.
--
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