s390/qeth: clean up initial MTU determination

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1. Drop the support for Token Ring,
2. use the ETH_DATA_LEN macro for the default L2 MTU,
3. handle OSM via the default case (as OSM is L2-only), and
4. document why the L3 MTU is reduced.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Julian Wiedmann 2017-10-18 17:40:18 +02:00 • committed by David S. Miller

parent 83cf79a2fe

commit 6e6f472d92

1 changed files with 4 additions and 10 deletions

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drivers/s390/net/qeth_core_main.c

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