This new API signals that the ctrlr will soon be
reset. This allows the transport to skip unnecessary
steps in following calls to the driver prior to the
reset - for example, skipping PCIe DELETE_SQ/CQ
commands when freeing an IO qpair.
Note that if we are deleting a qpair after
prepare_for_reset was called, and the qpair is
still waiting for a CREATE_IO_CQ or CREATE_IO_SQ,
we cannot poll for those commands to complete,
but we also cannot free the qpair immediately.
So set a flag for this case to defer the
destruction until the outstanding CREATE_IO_CQ or
CREATE_IO_SQ callback is invoked (typically as an
aborted command when the reset happens).
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I34c6276ae71e7d61ad4a3720f1a985b1ee96bd8b
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9249
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
The pcie layer can't always detect bad addresses
in the request at submission time - for example,
the transport may not have any trackers available
and the request gets queued at the generic
nvme level.
So this means that we might detect vtophys failures
during submission time, or in a process_completions
context - the latter happening when we complete
one request which triggers submitting a new request.
Currently if the vtophys failure happens during
submission context, we return -EFAULT to the
caller *and* call the completion callback. Nowhere
else in the driver do we do both - the intention
has always been that you get one or the other.
So make all of this consistent by tagging the
tracker and the qpair with a flag if we hit a vtophys
error in the submission path. Return 0 to the caller,
who will then later get a completion callback for the
bad request when the qpair is next processed for
completions.
I considered a separate TAILQ to hold these 'bad'
trackers, but that would have required duplicating
quite a bit of the tracker completion code for this
one case. The flag on the pqpair is already in the
hot cacheline, so it's cheap to check it. We will
only interate the outstanding_tr list when that flag
is set, so this should have zero impact to performance.
Fixes issue #2085.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I60b135fb32d899188e51545b69feb1b27758fd7f
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9234
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
The generic transport layer still does a busy wait, but at least
the logic in the PCIe transport now creates the queue pair
asynchronously.
Signed-off-by: Monica Kenguva <monica.kenguva@intel.com>
Change-Id: I9669ccb81a90ee0a36d3f5512bc49c503923b293
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/8910
Community-CI: Mellanox Build Bot
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
The PCIE and VFIOUSER both can use this function, the only difference
is VFIOUSER should use IOVA=VA to do the vtophys translation, so
here we will move the function to the common PCIe layer as the first
step.
Change-Id: I699edb67a00a2fa534072fc02ac2dd4a27aba8f4
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/8030
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ziye Yang <ziye.yang@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Check if qpair has a poll group during the connect process,
use poll group's statistics or allocate own structure per
qpair. That is done due to not all applications use poll
groups and we want to avoid "if (qpair->group)"
conditions in data path.
Admin qpair always allocates its own statistics
structure but the statistics are not reported
since this qpair is not attached to a poll group.
Statistics are reported by spdk_nvme_perf tool
if --transport-stats and in bdev_nvme_transport_statistics
RPC method.
Change-Id: I58765be161491fe394968ea65ea22db1478b219a
Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6304
Community-CI: Broadcom CI
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
The data path for PCIe and vfio-user transports are almost
same too, so move the code from nvme_pcie.c to nvme_pcie_common.c,
so that these APIs can be reused by vfio_user.
No logic change for this patch.
Change-Id: I82f480bba3bae0ce35e2a98f29839081095f7d50
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6040
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: <dongx.yi@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
There are some common data structures and APIs in pcie transport
which can be used both for pcie and vfio-user transport, so move
the common code into a new header and source file.
No actual logic change just the code movement except remove the
static function declarations.
Change-Id: Ie9021e703a5780fdd6840f0e3cfea76a0017a811
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/5923
Community-CI: Broadcom CI
Reviewed-by: sunshihao <sunshihao@huawei.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
