smc: support variable CLC proposal messages

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According to RFC7609 [1] the CLC proposal message contains an area of
unknown length for future growth. Additionally it may contain up to
8 IPv6 prefixes. The current version of the SMC-code does not
understand CLC proposal messages using these variable length fields and,
thus, is incompatible with SMC implementations in other operating
systems.

This patch makes sure, SMC understands incoming CLC proposals
* with arbitrary length values for future growth
* with up to 8 IPv6 prefixes

[1] SMC-R Informational RFC: http://www.rfc-editor.org/info/rfc7609

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Hans Wippel <hwippel@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Ursula Braun 2017-12-07 13:38:49 +01:00 • committed by David S. Miller

parent 6b5771aa3c

commit e7b7a64a84

3 changed files with 107 additions and 24 deletions

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15

net/smc/af_smc.c

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82

net/smc/smc_clc.c

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34

net/smc/smc_clc.h

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