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Karsten Graul authored
Older SMCR implementations had no link failover support and used one link only. Because the handshake protocol requires to try the establishment of a second link the old code sent a fake add_link message and declined any server response afterwards. The current code supports multiple links and inspects the received fake add_link message more closely. To tolerate the fake add_link messages smc_llc_is_local_add_link() needs an improved check of the message to be able to separate between locally enqueued and fake add_link messages. And smc_llc_cli_add_link() needs to check if the provided qp_mtu size is invalid and reject the add_link request in that case. Fixes: c48254fa ("net/smc: move add link processing for new device into llc layer") Reviewed-by:
Ursula Braun <ubraun@linux.ibm.com> Signed-off-by:
Karsten Graul <kgraul@linux.ibm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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