Re: [Lksctp-developers] [RFC PATCH] [SCTP]: Support the new specification

[Vlad Yasevich <vladislav.yasevich@hp.com>]

Ivan Skytte Jørgensen wrote:
> On Friday 28 March 2008 20:54:38 Vlad Yasevich wrote:
>> The specification of sctp_connectx() has been changed to return
>> an association id.  Sence it is guaranteed the association id will
>> be a positive 32 bit integer, we can simply return that from our
>> setsockopt() in the case of success.  The library that implements
>> sctp_connectx() will re-interpret the call.
> 
> Partial NAK.
> 
> It breaks old versions of lksctp. I am not aware that we previously have 
> required lksctp to match the kernel exactly unless there was no other way.
> 
> A new sockopt is safer.
> 
> /isj


In what way?  The only possible problem is that sctp_connectx()
can return a positive value on success in addition to 0, depending
on which kernel is used.

How much of a problem is this really?

A new socket option is actually problematic as well, because the 
behavior will depend on the system that lksctp libraries are built
on.

So, I am not sure which tradeoff is better...

-vlad