netdev - Re: [PATCH v2 net-next 0/9] ipv6: fib6: socket dst

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:	Fri, 26 Sep 2014 00:28:53 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	hannes@...essinduktion.org
Cc:	netdev@...r.kernel.org, eric.dumazet@...il.com,
	hideaki@...hifuji.org, vyasevich@...il.com,
	nicolas.dichtel@...nd.com, kafai@...com
Subject: Re: [PATCH v2 net-next 0/9] ipv6: fib6: socket dst_entry
 improvments and cleanups

From: Hannes Frederic Sowa <hannes@...essinduktion.org>
Date: Sun, 21 Sep 2014 16:11:44 +0200

> Eric Dumazet noticed that rt6_nodes wich are neither RTF_NONEXTHOP nor
> RTF_GATEWAY but DST_HOST ones cause major routing lookup churn because
> their rt6_genid is never renewed, thus ip6_dst_check always considers
> them outdated. This is a major problem, because these kind of routes
> are normally used to in input handling.

This series is a disappointment for me from the perspective of the
fact that we have a regression in mainline and this is too complex
of a set of changes for there.

If we relookup the thing every TCP input packet, we might as well
not do the input route caching in the socket.
--
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