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Karsten Graul fffe83c8c4 net/smc: fix toleration of fake add_link messages
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: c48254fa48 ("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>
2020-09-03 16:52:33 -07:00
arch
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Documentation doc: net: dsa: Fix typo in config code sample 2020-09-03 10:38:22 -07:00
drivers tg3: Fix soft lockup when tg3_reset_task() fails. 2020-09-03 12:16:54 -07:00
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include netfilter: nfnetlink: nfnetlink_unicast() reports EAGAIN instead of ENOBUFS 2020-08-28 20:11:58 +02:00
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net net/smc: fix toleration of fake add_link messages 2020-09-03 16:52:33 -07:00
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tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2020-08-31 11:22:30 -07:00
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Linux kernel
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