netdev - Re: [PATCH] net: Fragment large datagrams even when IP

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 12 Jul 2016 11:11:16 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	Alan.Davey@...aswitch.com
Cc:	paul@...ma.org, netdev@...r.kernel.org, kuznet@....inr.ac.ru,
	jmorris@...ei.org, yoshfuji@...ux-ipv6.org, kaber@...sh.net
Subject: Re: [PATCH] net: Fragment large datagrams even when IP_HDRINCL is
 set.

From: Alan Davey <Alan.Davey@...aswitch.com>
Date: Tue, 12 Jul 2016 12:34:07 +0000

> -  all future applications have to continue to implement their own fragmentation code, duplicating that which already exists in the kernel

They have to do this anyways, don't you see this?

Otherwise they don't support %99 of the kernels out there.

Even if I put this change in now, it would take years for it to
propagate to even a moderate percentage of Linux machines out there.

And applications doing a "we only support kernels > version x.y.z" is
a situation I don't want to promote if you think that's a reasonable
way to handle this.