Are there any mandatory callbacks that EFA refuses other than this one
(which Gal said that it will support)?
All the EOPNOTSUPP ones. It *really* doesn't support kverbs at
all.
Oh wow, didn't realize that :)
Make the dicussion take a different light, doesn't it :)
It sorta makes sense for efa I guess..
Which is why my first thought was to just not present it via the
in-kernel client API at all.
Definitely, it should not appear to the client API at all..
This patch is needed most definitely.
Okay, Gal should keep going on that then, and do something about the
mandatory verbs. Probably failing mandatory verbs tests should hide
the driver from the client API (except toward uverbs).
I'm sure that all of those (other than modify_qp) are trivial
to add but it doesn't really make sense to have them if userspace
is not using uverbs for them.
If there is no modify_qp then the driver doesn't support the verbs QP
FSM, and a lot of other stuff. Ie it is not really a verbs QP. :\
Can you explain what does the FSM matter to UD? I always thought
its really just a shim because its sort of irrelevant...
If that is the case, EFA can implement a trivial modify_qp for
UD QPs (i.e. do nothing, but at least fit the interface)?
Only req_notify really extends into userspace verbs though.
Is it? ibv_notify_cq doesn't go to the kernel afair..
There is a IB_USER_VERBS_CMD_REQ_NOTIFY_CQ ..
Hmm.. Many drivers do this via a BAR page write, not via the syscall,
so I guess we don't know if EFA needs this or not.
I'm betting that it doesn't...
