Wrap the v2 session core with the server-side C ABI the gateway
binds to: prepare/ready/cancel session calls, staging leases for
GET side-loading, the put-view handoff for PUT commits, session
introspection, and the server lifecycle.
The ABI owns the parts that must be shared across sessions: the
verbs device handle, global and per-principal resource limits,
session accounting with consume-once handles keyed by epoch and
nonce, the completion reference that pins a session from the
READY claim until its finalizer, and the reaper that tears
transport objects down once every reference drains. A background
thread expires sessions past their prepare or execute deadlines
so abandoned sessions cannot pin the limits, and teardown
failures keep the affected verbs objects and device alive rather
than freeing memory the NIC may still reference.
A peer-busy READY rolls the claim back and re-arms the QP
through RESET so the client can retry the same session. The
vgwrdma target now links the archive built from these sources.
Signed-off-by: Jihyeon Gim <potatogim@potatogim.net>
Port the hipObject v2 reliable-connection session core into
cuwrapper/rc: the session table and state machine, the wire
codec for the hipobj-rc-v2 headers, request parsing, the
injectable clock and randomness sources, the transport layer
(QP/CQ lifecycle, RTR/RTS transitions, staging registration),
the data phase (RDMA write with immediate for GET, receive with
immediate for PUT), the RDMA token codec, and the dynamically
loaded ibverbs shim (ibv-core.h plus the dlopen host binding).
The sources are a port of the upstream hipObject v2 core, kept
close to the original so the two trees can be diffed during
review. Nothing links against them yet; a Makefile rule builds
the objects into rdma/librcserver.a for the ABI layer that
follows.
Signed-off-by: Jihyeon Gim <potatogim@potatogim.net>
Jihyeon GimandBen McClelland