vxlan: Relax MTU constraints

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Allow the MTU of vxlan devices without an underlying device to be set
to larger values (up to a maximum based on IP packet limits and vxlan
overhead).

Previously, their MTUs could not be set to higher than the
conventional ethernet value of 1500.  This is a very arbitrary value
in the context of vxlan, and prevented vxlan devices from being able
to take advantage of jumbo frames etc.

The default MTU remains 1500, for compatibility.

Signed-off-by: David Wragg <david@weave.works>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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David Wragg 2016-02-10 00:05:55 +00:00 • committed by David S. Miller

parent 461547f315

commit 72564b59ff

1 changed files with 25 additions and 11 deletions

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48

drivers/net/vxlan.c

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