在 2022/3/1 下午9:17, D. Wythe 写道:
From: "D. Wythe" <alibuda@xxxxxxxxxxxxxxxxx>
Remove connections from link group is not synchronous with handling
SMC_LLC_DELETE_RKEY, which means that even the number of connections is
less that SMC_RMBS_PER_LGR_MAX, it does not mean that the connection can
register rtoken successfully later, in other words, the rtoken entry may
have not been released. This will cause an unexpected
SMC_CLC_DECL_ERR_REGRMB to be reported, and then ths smc connection have
to fallback to TCP.
IMHO, if there are SMC_RMBS_PER_LGR_MAX connections in the link group now,
one of them is being removed and here comes a new connection at this moment,
then:
(1) without this patch, the new connection will be added into the old link group
but fallback if the removing connection has not finished unregistering its rmb.
(2) with this patch, a new link group will be created and the new connection
will be added into the new link group.
I am wondering if (1) should be considered as a issue, or just a bydesign?
If it is a issue, I think this patch works, Thanks!
Reviewed-by: Wen Gu <guwen@xxxxxxxxxxxxxxxxx>
Best Regards,
Wen Gu
