[openib-general] [PATCH] IB_CM: Limit the MRA timeout

[Sean Hefty]

Ishai Rabinovitz wrote:
> There is a bug in SRP Engenio target that send a large value as service 
> timeout. (It gets 30 which mean timeout of (2^(30-8))=4195 sec.) Such a long
> timeout is not reasonable and it may leave the kernel module waiting on
> wait_for_completion and may stuck a lot of processes.
> 
> The following patch allows the load of ib_cm module with a limit on the
> timeout.

There's several timeout values transfered and used by the cm, most notably the 
remote cm response timeout and packet life time.  Does it make more sense to 
have a single, generic timeout maximum instead?  Would it make more sense to 
enable the maximum(s) by default, since we're dependent upon values received 
over the network?

- Sean