mctp: serial: enforce fixed MTU

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The current serial driver requires a maximum MTU of 68, and it doesn't
make sense to set a MTU below the MCTP-required baseline (of 68) either.

This change sets the min_mtu & max_mtu of the mctp netdev, essentially
disallowing changes. By using these instead of a ndo_change_mtu op, we
get the netlink extacks reported too.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Jeremy Kerr 2021-11-25 14:07:38 +08:00 • committed by Jakub Kicinski

parent 7bd9890f3d

commit d154cd078a

1 changed files with 7 additions and 0 deletions

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drivers/net/mctp/mctp-serial.c

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