[Ofvwg] OFVWG meeting notes (11/3/2015)

[Liran Liss]

Currently, OFVWG meetings concentrate on significant, relatively mature topics.
Consequently, meetings are not always regular, and valuable feedback is sometimes delayed.
Instead, it was proposed to meet on a bi-weekly bases, and cover important developments on a regular basis.

Sagi Grimberg provided an update on the new kernel s/g patches.
The new API is simpler than the previous FRWR API, and uses standard s/g data structures.
Specifically, the notion of independent page lists was removed.
In addition, the same API would be used for generic s/g (arbitrary byte alignment and sizes) for devices that support it.
In any case, it is up to the ULP to honor s/g alignment requirements depending on the device.
The kernel code was submitted.
A user-space equivalent is currently available in MOFED, but work is done to prepare it for upstream.

Eran Ben Elisha provided an update on self-loopback prevention, which until recently pertained only to kernel UD QPs.
The latest kernel patches extend support to raw Ethernet QPs, add ConnectX-3 device support and expose the interface to user-space.
ConnectX-4 device support is in review.
In user-space, libibvers and ConnectX-3 device support are under review, and ConnectX-4 support will be sent to the list soon.
The user-space extensions follow the extended Verbs guide lines.

--Liran
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