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net/smc: Add warning about remote memory exposure 

The driver explicitly bypasses APIs to register all memory once a
connection is made, and thus allows remote access to memory.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig 2017-05-16 09:51:38 +03:00 committed by David S. Miller
parent 263eec9b2a
commit 19a0f7e37c
1 changed files with 4 additions and 0 deletions
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4
net/smc/Kconfig
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@ -8,6 +8,10 @@ config SMC
The Linux implementation of the SMC-R solution is designed as The Linux implementation of the SMC-R solution is designed as
a separate socket family SMC. a separate socket family SMC.
Warning: SMC will expose all memory for remote reads and writes
once a connection is established. Don't enable this option except
for tightly controlled lab environment.
Select this option if you want to run SMC socket applications Select this option if you want to run SMC socket applications
config SMC_DIAG config SMC_DIAG