netdev - Re: [PATCH v2 net] fq_codel: fix NET_XMIT

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:	Tue, 07 Jun 2016 15:39:35 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	fw@...len.de, netdev@...r.kernel.org, stasn77@...il.com,
	xiyou.wangcong@...il.com, jhs@...atatu.com
Subject: Re: [PATCH v2 net] fq_codel: fix NET_XMIT_CN behavior

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Sat, 04 Jun 2016 12:55:13 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> My prior attempt to fix the backlogs of parents failed.
> 
> If we return NET_XMIT_CN, our parents wont increase their backlog,
> so our qdisc_tree_reduce_backlog() should take this into account.
> 
> v2: Florian Westphal pointed out that we could drop the packet,
> so we need to save qdisc_pkt_len(skb) in a temp variable before
> calling fq_codel_drop()
> 
> Fixes: 9d18562a2278 ("fq_codel: add batch ability to fq_codel_drop()")
> Fixes: 2ccccf5fb43f ("net_sched: update hierarchical backlog too")
> Reported-by: Stas Nichiporovich <stasn77@...il.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied.