[PATCH 2/2] nvme-rdma: Add handling for connecting to IPv6 targets

[Sagi Grimberg]

>>>> Currently the target driver doesn't support ipv6 addresses.
>>>>
>>>> These complementary patches [1,2] makes the it work e2e! So,
>>>
>>> I think we should use the same ipv6 addr parsing that Roland used
>>> in the host, and preferably have another module export that as a helper.
>>
>> I can try to unify them, but unlike the host that first tries ipv4 and
>> then fall to ipv6, the target needs to enforce the address family so
>> it's somewhat different. I kinda think that these are different enough
>> to stay separate don't you think?
>
> It'd still need all the scope ID handling similar to what Roland did,
> and that's a fair chunk of code.  We have a few options to handle the
> different allowed addresses:
>
>  (1) v4/v6 only flags
>  (2) having low-level v4/v6 handlers and one that tries these both
>  (3) using the try both handler and rejecting the wrong one after
>      parsing.
>
> (3) seems easiest, but (2) sounds fine to me.  But I'd really like to
> hear from folks on the netdev list what they think of that idea first.

(2) sounds fine to me too.