On 2022/6/23 下午7:59, Alexandra Winter wrote:
On 16.06.22 15:49, D. Wythe wrote:
On 2022/6/1 下午2:33, D. Wythe wrote:
在 2022/5/25 下午9:42, Alexandra Winter 写道:
We need to carefully evaluate them and make sure everything is compatible
with the existing implementations of SMC-D and SMC-R v1 and v2. In the
typical s390 environment ROCE LAG is propably not good enough, as the card
is still a single point of failure. So your ideas need to be compatible
with link redundancy. We also need to consider that the extension of the
protocol does not block other desirable extensions.
Your prototype is very helpful for the understanding. Before submitting any
code patches to net-next, we should agree on the details of the protocol
extension. Maybe you could formulate your proposal in plain text, so we can
discuss it here?
We also need to inform you that several public holidays are upcoming in the
next weeks and several of our team will be out for summer vacation, so please
allow for longer response times.
Kind regards
Alexandra Winter
Hi alls,
In order to achieve signle-link compatibility, we must
complete at least once negotiation. We wish to provide
higher scalability while meeting this feature. There are
few ways to reach this.
1. Use the available reserved bits. According to
the SMC v2 protocol, there are at least 28 reserved octets
in PROPOSAL MESSAGE and at least 10 reserved octets in
ACCEPT MESSAGE are available. We can define an area in which
as a feature area, works like bitmap. Considering the subsequent scalability, we MAY use at least 2 reserved ctets, which can support negotiation of at least 16 features.
2. Unify all the areas named extension in current
SMC v2 protocol spec without reinterpreting any existing field
and field offset changes, including 'PROPOSAL V1 IP Subnet Extension',
'PROPOSAL V2 Extension', 'PROPOSAL SMC-DV2 EXTENSION' .etc. And provides
the ability to grow dynamically as needs expand. This scheme will use
at least 10 reserved octets in the PROPOSAL MESSAGE and at least 4 reserved octets in ACCEPT MESSAGE and CONFIRM MESSAGE. Fortunately, we only need to use reserved fields, and the current reserved fields are sufficient. And then we can easily add a new extension named SIGNLE LINK. Limited by space, the details will be elaborated after the scheme is finalized.
[...]
Look forward to your advice and comments.
Thanks.
Hi all,
On the basis of previous，If we can put the application data over the PROPOSAL message,
we can achieve SMC 0-RTT. Its process should be similar to the following:
[...]
Thank you D. Wythe for the detailed proposal, I have forwarded it to the protocol owner
and we are currently reviewing it.
We may contact you and Tony Lu directly to discuss the details, if that is ok for you.
Kind regards
Alexandra Winter
Thanks a lot for your support, it seems good to us. We are totally okay with that.
Best Wishes.
D. Wythe
