netdev - for stable: vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices

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>] [day] [month] [year] [list]

Date:	Thu, 19 May 2016 21:53:33 -0400
From:	Dan Streetman <dan.streetman@...onical.com>
To:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: for stable: vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices

Can you queue this 3-commit patch series for stable?

7e059158d57b79159eaf1f504825d19866ef2c42 ("vxlan, gre, geneve: Set a
large MTU on ovs-created tunnel devices")
55e5bfb53cff286c1c1ff49f51325dc15c7fea63 ("geneve: Relax MTU constraints")
72564b59ffc438ea103b0727a921aaddce766728 ("vxlan: Relax MTU constraints")

Without them certain ovs-created tunnels have mtus that are too low
and can't be increased past 1500, even if both endpoints of the tunnel
have larger mtus, causing silently dropped large packets.

They fix:
b2acd1dc3949cd60c571844d495594f05f0351f4 (for gre),
614732eaa12dd462c0ab274700bed14f36afea5e (for ovs vxlan), and
2d07dc79fe04a43d82a346ced6bbf07bdb523f1b (for geneve).