linux/net/openvswitch
David Wragg 7e059158d5 vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices
Prior to 4.3, openvswitch tunnel vports (vxlan, gre and geneve) could
transmit vxlan packets of any size, constrained only by the ability to
send out the resulting packets.  4.3 introduced netdevs corresponding
to tunnel vports.  These netdevs have an MTU, which limits the size of
a packet that can be successfully encapsulated.  The default MTU
values are low (1500 or less), which is awkwardly small in the context
of physical networks supporting jumbo frames, and leads to a
conspicuous change in behaviour for userspace.

Instead, set the MTU on openvswitch-created netdevs to be the relevant
maximum (i.e. the maximum IP packet size minus any relevant overhead),
effectively restoring the behaviour prior to 4.3.

Signed-off-by: David Wragg <david@weave.works>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-10 05:50:03 -05:00
..
Kconfig openvswitch: Fix dependency on IPv6 defrag. 2015-09-11 15:39:04 -07:00
Makefile openvswitch: Remove conntrack Kconfig option. 2015-09-06 23:48:33 -07:00
actions.c ovs: limit ovs recursions in ovs_execute_actions to not corrupt stack 2016-01-18 12:09:45 -05:00
conntrack.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-31 18:20:10 -05:00
conntrack.h openvswitch: Fix double-free on ip_defrag() errors 2015-10-27 19:32:14 -07:00
datapath.c net: preserve IP control block during GSO segmentation 2016-01-15 14:35:24 -05:00
datapath.h openvswitch: Fix egress tunnel info. 2015-10-22 19:39:25 -07:00
dp_notify.c openvswitch: fix hangup on vxlan/gre/geneve device deletion 2015-12-03 14:29:25 -05:00
flow.c openvswitch: add tunnel protocol to sw_flow_key 2015-10-07 04:17:59 -07:00
flow.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-20 06:08:27 -07:00
flow_netlink.c openvswitch: correct encoding of set tunnel action attributes 2015-12-18 16:35:35 -05:00
flow_netlink.h openvswitch: Fix egress tunnel info. 2015-10-22 19:39:25 -07:00
flow_table.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-20 06:08:27 -07:00
flow_table.h openvswitch: Zero flows on allocation. 2015-09-22 17:33:41 -07:00
vport-geneve.c openvswitch: fix struct geneve_port member name 2016-01-10 23:49:21 -05:00
vport-gre.c openvswitch: properly refcount vport-vxlan module 2015-12-02 11:50:59 -05:00
vport-internal_dev.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-24 06:54:12 -07:00
vport-internal_dev.h openvswitch: introduce rtnl ops stub 2014-07-01 14:40:17 -07:00
vport-netdev.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
vport-netdev.h openvswitch: Use dev_queue_xmit for vport send. 2015-10-22 06:46:16 -07:00
vport-vxlan.c vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices 2016-02-10 05:50:03 -05:00
vport.c openvswitch: properly refcount vport-vxlan module 2015-12-02 11:50:59 -05:00
vport.h openvswitch: update kernel doc for struct vport 2016-01-10 23:49:21 -05:00