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net: report min and max mtu network device settings

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Report the minimum and maximum MTU allowed on a device
via netlink so that it can be displayed by tools like
ip link.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2018-07-27 13:43:22 -07:00 • committed by David S. Miller
parent 3260155ac7
commit 3e7a50ceb1
2 changed files with 8 additions and 0 deletions
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2
include/uapi/linux/if_link.h
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@ -164,6 +164,8 @@ enum {
IFLA_CARRIER_UP_COUNT,
IFLA_CARRIER_DOWN_COUNT,
IFLA_NEW_IFINDEX,
IFLA_MIN_MTU,
IFLA_MAX_MTU,
__IFLA_MAX
};