xnvme: bump to 0.7.5

Required for unmap support.

Change-Id: I55ac2e9d96feea336d31332fa445881a5379b0d1
Signed-off-by: Nadja Brix Koch <n.koch@samsung.com>
Reviewed-on: https://review.spdk.io/gerrit/

xnvme: bump to 0.7.5

Required for unmap support.

Change-Id: I55ac2e9d96feea336d31332fa445881a5379b0d1
Signed-off-by: Nadja Brix Koch <n.koch@samsung.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/25082
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>

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xnvme: bump to 0.7.3

This includes significant performance improvements in the AIO and URING
backends.

For this to work I have also needed to:
* Fix Meson args in xnvmebuild
- The Meson arguments

xnvme: bump to 0.7.3

This includes significant performance improvements in the AIO and URING
backends.

For this to work I have also needed to:
* Fix Meson args in xnvmebuild
- The Meson arguments for xNVMe have been changed since 0.5.0.
* Fix double declaration in headers in bdev_xnvme
- Since xNVMe 0.7.0 libxnvme.h includes everything needed for using the xNVMe library.
* Support shared and static linking in mk/xnvme
- Since 0.7.0 xNVMe always creates a shared and static library,
with this change SPDK can support using either.
- Additionally, the linker flags have been moved out of spdk.common.mk,
CFLAGS are no longer added twice, and LDFLAGS have been removed, since
we are now specifiying the full path to the xNVMe libs.

Change-Id: I86760655ae9898a82f0a83ab4c33122854c0384f
Signed-off-by: Karl Bonde Torp <k.torp@samsung.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/20605
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Ben Walker <ben@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

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xnvme: update submodule to v0.5.0

This updates the xNVMe submodule to v0.5.0 and adjusts the Makefile,
disabling a backend (libvfn) introduced in v0.5.0 which is not of
interest.

With xNVMe v0.5.0

xnvme: update submodule to v0.5.0

This updates the xNVMe submodule to v0.5.0 and adjusts the Makefile,
disabling a backend (libvfn) introduced in v0.5.0 which is not of
interest.

With xNVMe v0.5.0 two things important for the bdev_xnvme has changed:

* The 'libaio' backend implementation responds to 'opts.poll_io'. It
does so by 'xnvme_queue_poke()' returning immediatly instead of
waiting for at least one outstanding IO to complete or for a timeout
to occur. This dramatically improves the IO-rate and reduces latency.

* Prior to xNVMe v0.5.0, the liburing library was vendored and "bundled"
into the xNVMe library. This library-bundling can cause linker issue
and is thus replaced by linking "properly" with liburing on the system
via pkg-config discovery.

To make sure linker can properly link libxnvme.a's content we need to
make sure we point at system's -luring during the build. Effectively,
this can now work together with --with-uring[=/uring].

This change is made in preparation to adding the 'conserve_cpu' option
which makes use of 'opts.poll_io' for 'io_mechanism=libaio'.

Signed-off-by: Simon A. F. Lund <simon.lund@samsung.com>
Signed-off-by: Michal Berger <michal.berger@intel.com>
Change-Id: Ibd6e620679a3991a4a8642bb39390a61284aac74
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14677
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot

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bdev : xNVMe BDEV module implementation

This implementation of xNVMe BDEV module supports the char-device / ioctl-over-uring,
along with the "regular" io_uring, libaio, POSIX aio, emulated aio (via

bdev : xNVMe BDEV module implementation

This implementation of xNVMe BDEV module supports the char-device / ioctl-over-uring,
along with the "regular" io_uring, libaio, POSIX aio, emulated aio (via threadpools) etc.

Code changes done :
a. Addition of xNVMe submodule to SPDK
b. Modification of RPC scripts to Create / Delete xNVMe BDEVs
c. Implementation of xNVMe BDEV module

Signed-off-by: Krishna Kanth Reddy <krish.reddy@samsung.com>
Change-Id: If814ca1c784124df429d283015a6570068b44f87
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11161
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>

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