Commit Graph

18251 Commits

Author SHA1 Message Date
Yuriy Umanets
5ba9b78e17 bdev/crypto: Cleanup with crypto opts fields duplication
- Fixed duplication of key, key2, drv_name, cipher, etc., fields in
  struct bdev_names and struct vbdev_crypto. Moved all of them into
  the new struct vbdev_crypto_opts, which is re-used by both structs.
  This aslo removes duplication in error handling and fininalization
  logic that checks the keys are zeroed out and properly freed.
- Moved unhexlify into vbdev rpc code. All keys passed to vbdev
  already in the binary form.
- Provide meaningful error messages in the rpc response on keys
  validation issues during setup of crypto vbdev.
- Updated unit tests.

Signed-off-by: Yuriy Umanets <yumanets@nvidia.com>
Change-Id: I1fab8771bbbc0cd2f359f0d105fec28fb86893b3
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11631
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2022-03-24 09:21:35 +00:00
Yuriy Umanets
1434e255ef bdev/crypto: Critical fix about using binary keys
- Added hexlify() and unhexlify() for key and key2. This is required
  for keys that contain zero and non-ascii characters. Since binary
  keys may contain zero character, strlen(key) cannot be used and
  key_size and key2_size are used instead. Non-asci chars are not
  allowed in json and using hexlified keys fixes this issue as well.
- Updated documentation to clearly state that hexlified keys must
  be used.
- Updated test scripts.

Signed-off-by: Yuriy Umanets <yumanets@nvidia.com>
Change-Id: I3fce7839f7eaa67d0307071eba80b4cea472d731
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11891
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: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-24 09:21:35 +00:00
Yuriy Umanets
45f24aebe7 bdev/crypto: MLX5 AES_XTS general support
- General MLX5 crypto support.
- Unit-tests MLX5 crypto support.
- Documentation update to list the MLX5 driver as supported,
  enumerate the cipher algorithms and provide some configuration
  hints.

Signed-off-by: Yuriy Umanets <yumanets@nvidia.com>
Change-Id: I0da1f49f4acd068d75a4d8633f84fe626d774431
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11630
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
2022-03-24 09:21:35 +00:00
John Levon
bd5bf8cf79 nvmf/vfio-user: set cq->group properly
Make sure cq->group is set even in interrupt mode.

Signed-off-by: John Levon <john.levon@nutanix.com>
Change-Id: I9f722917a8e3aebbd5d66648a3909f795897ec1a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11997
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
2022-03-23 09:02:33 +00:00
Alexis Lescouet
dc52f23536 test/nvme: Fix unittest_nvme failure
Fix conditional jump depending on uninitialized qpair->reserved_req value.

Signed-off-by: Alexis Lescouet <alexis.lescouet@nutanix.com>
Change-Id: I8d3078aa66fa0e2a3bdb06f2c5cdaf3b8ad112bd
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11640
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: John Levon <levon@movementarian.org>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-23 09:02:21 +00:00
zhaoshushu.zss
eacab9269a bdev/trace: convert trace submit parameter into uint64_t type
Parameters submitted by bdev trace record may not be uint64_t
type (ex: bdev_io->type), which may bring outliers in trace parsing
results. The reason is that, in _spdk_trace_record() function,
va_list hold information about variable arguments, when passing
SPDK_TRACE_ARG_TYPE_INT arguments, it will call va_arg(vl, uint64_t)
to get value. However, if the submitted type is not uint64_t,
va_arg may return outlier.

To solve the problem, the parameter should be converted into
uint64_t before be delivered into trace record if it is not
uint64_t.

Signed-off-by: zhaoshushu.zss <zhaoshushu.zss@alibaba-inc.com>
Change-Id: Id710e39581f5e7b7551f3ff3a308f122f1344f1f
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11691
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: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
2022-03-23 09:02:15 +00:00
Tomasz Zawadzki
c706c20c50 lib/vhost: move pending_async_op_num from generic vhost
pending_async_op_num is specific to vhost_user.
To prepare for virtio_blk transport abstraction,
checking for the pending operations is moved to vhost_user
specific code from vhost_blk.

Ideally the vhost_user_dev_unregister() should be the only
function that checks this field, but due to
order of calls in vhost_scsi it needs to remain there separetly.
This should not pose any issue, as vhost_scsi is still dependent
directly on vhost_user.

Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I53dde73766dcf8596715560f6909a4679f8da930
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11811
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2022-03-23 09:02:09 +00:00
Krzysztof Karas
0c97e22ccc spdk_top: fix scheduler data error display
spdk_top constantly shows scheduler data error
due to missing "_relaxed" suffix in
spdk_json_decode_object() function. This happens
when SPDK scheduler is switched to "dynamic", because
it provides more data than defined in spdk_top's
scheduler_decoders structure.

Additionally delete leftover governor code.

Fixes #2433

Change-Id: I1f849f0cb48fce5312cdc3c25d7b4529b407283c
Signed-off-by: Krzysztof Karas <krzysztof.karas@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12010
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
2022-03-23 09:01:46 +00:00
Alexey Marchuk
94a10ad2ea test/dma: Add option to fail test if memory domains
are not supported

That will be used to test memory domains with logical
volumes, we need to make sure that lvol correctly
reports memory domains. Also add a counter for the
number of translation_cb calls and verify that
it is not smaller than the total number of
completed IO requests

Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Change-Id: I42f0cb14fd24c95de830146a603de64f1a8848be
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11374
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
2022-03-23 09:01:40 +00:00
Alexey Marchuk
8e7688c5a7 bdev: Copy ext_opts when request is split
That is done to correctly handle metadata pointer which is part
of ext_opts structure. It will also be used by the next patch to
remove memory_domain pointer if request which uses local buffers
is split

Force the user to set correct ext_opts size, update API functions
description.

Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Change-Id: I77517d70df34a998d718cc6474fb4c538a42918f
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11349
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
2022-03-23 09:01:40 +00:00
Alexey Marchuk
c20dd8afee bdev: Add ext_opts in public bdev_io section
Bdev modules must not access internal bdev_io
structure, so add a new pointer in a public
section. Pointer in internal section will be
used in next patch

Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Change-Id: Ib631563015b3e5fa9300d22b7ae59d8db43c8275
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10421
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2022-03-23 09:01:40 +00:00
Alexey Marchuk
c03985a068 bdev: Copy data asynchronously when bounce buffer is used
This patch is a preparation for enabling of memory domains
pull/psuh functionality. Since memory domains API is
asynchronous, this patch makes asynchronous operations
with bounce buffers.

Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Change-Id: Ieb1f2a0c151149af58cfd7607dbde4c76c3c288d
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10420
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
2022-03-23 09:01:40 +00:00
Michal Berger
cbda5664f5 test/nvmf: Remove support for soft-RoCE setups
Motivation: https://github.com/spdk/spdk/issues/2277

Signed-off-by: Michal Berger <michalx.berger@intel.com>
Change-Id: I6a85816c65ebecf63c2f454e4b97484542faef9e
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10929
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2022-03-22 16:01:54 +00:00
Yifan Bian
9c37603b4a test/llvm_nvme_fuzz: add READ and WRITE command test case
Change-Id: If3134b067d30b2546a7814151e7d9d61153a5ad7
Signed-off-by: Yifan Bian <yifan.bian@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11936
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
2022-03-22 09:29:54 +00:00
Jun Wen
d740599bde test/nvmf: add aer test for vfio-user
Signed-off-by: Jun Wen <junx.wen@intel.com>
Change-Id: Ia650f91c21ce5495eaf49027cca0e10f71be1f6f
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11724
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: GangCao <gang.cao@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Dong Yi <dongx.yi@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
2022-03-22 09:29:47 +00:00
yidong0635
57eee18288 blobfs: Add missing error checks for strdup.
Here were some cases for file->name using strdup
missing check for no memory, but some had.
So add them.

Signed-off-by: yidong0635 <dongx.yi@intel.com>
Change-Id: I91feeea3711f127135aedf37e53624811a4ab5e8
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11989
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
2022-03-22 09:29:42 +00:00
yidong0635
ebf077cbf8 configure: Correct without-pmdk configure message.
without-pmdk should notice with no path specified.

Signed-off-by: yidong0635 <dongx.yi@intel.com>
Change-Id: I10f881c4677db2d9282f8f16975e3aab674c26d0
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11988
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: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-22 09:29:42 +00:00
John Levon
70f3606bfc add USDT tracepoints for interrupt wakeups
With these we can write a simple bpftrace script to identify work being done,
and in particular what woke us up from sleeping.

Signed-off-by: John Levon <john.levon@nutanix.com>
Change-Id: I8997d847625ee4558092dbd753e6fc1b17beca92
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9424
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
2022-03-21 11:07:05 +00:00
Ben Walker
f0bf4e75f5 idxd: Eliminate configs
SPDK has settled on what the optimal DSA configuration is, so let's
always use it.

Change-Id: I24b9b717709d553789285198b1aa391f4d7f0445
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11532
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: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
2022-03-21 11:05:28 +00:00
Ben Walker
049bb9e41f idxd: Update register names for idxd_group_flags
The names on these were changed.

Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Change-Id: Ib75a60342c08f72dad39635a9244421c1cca5485
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11793
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: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-21 11:05:28 +00:00
Jim Harris
26d4436a52 bdev/nvme: rename discovery_ctx->detach to ->stop
Detach and stop are two different operations.  This
->detach field was used to denote when the associated
discovery service should be stopped.  So call the field
'stop' instead.  That may trigger the currently
attached discovery controller to be detached.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I61c7fc860cd9dbcfab71eedfd223c06c51a41f27
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11771
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
2022-03-21 11:05:17 +00:00
Jim Harris
40a9d6a03e bdev/nvme: add entry_ctx_in_use
We will now keep a list of the possible paths to
the discovery subsystem.  One of them will be the
path we are currently connected to (which at service
start, is the path specified by the user).

Additional entries are added for discovery log page
entries referencing the discovery subsystem.

When the discovery service starts, we just have the
initial entry in the list - the discovery poller
tries to connect to it, and if the connect starts
successfully, removes it from the list and points
ctx->entry_ctx_in_use to it.

This will be useful later when we want to iterate
through the available paths to the discovery
subsystem if the current path fails.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I5b18e0f20c4607e29ac0f12f27ba7eb169d0206d
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11770
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
2022-03-21 11:05:17 +00:00
Jim Harris
5428fb0133 bdev/nvme: add function to create an entry_ctx for discovery
This reduces some code duplication since the same
function will be reused in an upcoming patch.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Id6764171ff93c95de49792a4488f2c205b8eddb6
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11769
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
2022-03-21 11:05:17 +00:00
Jim Harris
81587f0663 bdev/nvme: always defer start of discovery service
We used to wait until the discovery service could
connect to the discovery subsystem before calling
the callback function provided by the caller (mainly
the start_discovery RPC).

Moving forward, we will be handling the case where
the discovery subsystem is unavailable temporarily.
For now, let's not fail the bdev_nvme_start_discovery
call if we cannot connect to the discovery subsystem.
This will keep the initial service start path the same
as the path where the discovery subsystem is temporarily
unavailable.  In the future, we can consider adding
functionality to the start_discovery RPC that waits
up to X number of seconds to see if we were able to
connect and fail otherwise.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Icb05523b9d59f508bfbc0233595c8bf58c10488f
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11768
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 <smatsumoto@nvidia.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-21 11:05:17 +00:00
Shuhei Matsumoto
6a89f75ec7 nvme_rdma: Remove handling stale connect
The feature will be redesigned and restored in the following patches.
For the NVMe bdev module, it can reconnect by itself without relying
on the feature.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: I2d9c0437f7ad8412ad8cf40d11e574723b735bee
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11440
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
0c77cf90bf nvme_rdma: Consolidate fail_qpair() calls into a single place
For nvme_rdma_qpair_process_completions(), consolidate the operations to
call nvme_rdma_fail_qpair() and return -ENXIO into a single place.

Besides, shorten pointer references for
nvme_rdma_qpair_process_completions() and
nvme_rdma_poll_group_process_completions().

These will make the following patches a little easier.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: Iaf72cfca0b5b3ba223d86e267da8069d43a15292
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11439
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
df7c2a2253 nvme: Call ctrlr_disconnect_done() after qpair_process_comletions() returns -ENXIO
Add a new flag is_disconnecting to struct spdk_nvme_ctrlr.

Separate calling nvme_ctrlr_disconnect() and nvme_ctrlr_disconnect_done()
by using the flag is_disconnecting.

Additionally, change nvme_ctrlr_fail() to skip setting ctrlr->is_failed
to true if ctrlr->is_disconnecting is true.

Change-Id: Ie2c74ba41f120662a30f6198751d07005d23abcf
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11000
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
8926303b59 nvme: Caller polls qpair until disconnected if async connect failed
nvme_transport_ctrlr_connect_qpair() calls
nvme_transport_ctrlr_disconnect_qpair() if failed.

If async qpair disconnect is supported, even when connect qpair failed,
nvme_transport_ctrlr_connect_qpair() may complete asynchronously later.

The cases that qpair->async is set to true are I/O qpair for the NVMe
bdev module and admin qpair.

example/nvme/perf and example/nvme/reconnect use I/O qpair but both
set qpair->async to false.

For the NVMe bdev module, I/O qpair is connected when creating I/O
channel or resetting ctrlr. If spdk_nvme_ctrlr_connect_io_qpair()
returns 0 for a I/O qpair, the qpair is in a poll group and is polled
by spdk_nvme_poll_group_process_completions() and a disconnected
callback is called to the qpair. Hence we do not need to add additional
polling for I/O qpair in the NVMe bdev module.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: I6e0aadcfd98e5cb77b362ef1a79e0eca2985f36e
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11112
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
9d1063d732 nvme: qpair_process_completions() processes if qpair is disconnecting
If poll group is not used and if qpair is disconnecting,
spdk_nvme_qpair_process_completions() has to poll qpair until it is
actually disconnected even if ctrlr is failed.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: I6da84f1e35780d21480fbe6f07e76af3048a777b
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11018
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
21322e01dd nvme: Separate spdk_nvme_ctrlr_disconnect() into disconnect and after it
Serparate spdk_nvme_ctrlr_disconnect() into nvme_ctrlr_disconnect()
and nvme_ctrlr_disconnect_done() to call nvme_ctrlr_disconnect_done()
after adminq is actually disconnected when disconnecting adminq
asynchronously.

The following patches will add a new flag is_disconnecting to struct
spdk_nvme_ctrlr and prevent us from setting ctrlr->is_failed to true
between nvme_ctrlr_disconnect() and nvme_ctrlr_disconnect_done().

By this patch, nvme_ctrlr_disconnect() and nvme_ctrlr_disconnect_done()
are executed in the same context. So it is not possible to set
ctrlr->is_failed to true between nvme_ctrlr_disconnect() and
nvme_ctrlr_disconnect_done().

Hence nvme_ctrlr_disconnect_done() does not have to clear ctrlr->is_failed
again.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: I18b5b68f37e27b54782691823edae9738c26faa1
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10999
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
4a73675dbf nvme: Remove deprecated spdk_nvme_ctrlr_reset_async() and _reset_poll_async()
Change spdk_nvme_ctrlr_reset() to use spdk_nvme_ctrlr_disconnect(),
spdk_nvme_ctrlr_reconnect_async(), and
spdk_nvme_ctrlr_reconnect_poll_async().

Then remove the deprecated spdk_nvme_ctrlr_reset_async() and
spdk_nvme_ctrlr_reset_poll_async().

These changes simplify the following patches to make
spdk_nvme_ctrlr_disconnect() asynchronous.

Change-Id: Ia71e8e0ad5b2dff42b7423634f66de47863926e2
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10913
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
cfe11bd1db nvme: Factor out operations done after disconnect qpair completes
This is a preparation to make nvme_transport_ctrlr_disconnect_qpair()
asynchronous.

For nvme_transport_ctrlr_disconnect_qpair(), factor out operations after
returning from transport's specific ctrlr_disconnect_qpair() into a helper
function nvme_transport_ctrlr_disconnect_qpair_done().

Then move nvme_transport_ctrlr_disconnect_qpair_done() into the end of
the transport specific ctrlr_disconnect_qpair().

Additionally remove the operation to overwrite the qpair state to
DISCONNECTED from nvme_transport_connect_qpair_fail() because
this is duplicated and nvme_transport_ctrlr_disconnect_qpair() is responsible
to make the qpair disconnected even after it completes asynchronously.

Change-Id: I9c8faa7039d306d3e31a8f51826755ce8840a8aa
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10851
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
0b32309bf6 bdev/nvme: Check not only I/O qpair but also adminq when finding optimal I/O path
For RDMA transport, adminq will find transport error first because
usually only adminq polls CM events.

Change-Id: I7b22cc8883bf02198f1a90d2654c1de6f2e736e6
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11331
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
3edbcba287 bdev/nvme: Factor out clearing all I/O path caches into a helper function
This is a preparation to the following patches.

Change-Id: I1bb0052c745d4f83ff621e4110907a8ac1f1d597
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11330
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
3182be6d26 bdev/nvme: Fail fast I/O qpair if poll_group_process_completions() returns negated errno
If qpair is disconnected asynchronously, it takes time from detecting
transport error to actually disconnected. We should avoid using the
path as soon as possible after detecting any transport error.

Poll group clears I/O path cache if it finds transport error and avoid
using the path which had transport error.

These changes will reduce the failover time.

Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: I00580159a84372a115ed5e62a6ce13eed4368999
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11329
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
aca0d56e3d bdev/nvme: Reconnect ctrlr after it is disconnected at completion poller
spdk_nvme_ctrlr_disconnect() will be made asynchronous in the
following patches and so we will need to have some changes.

spdk_nvme_ctrlr_disconnect() disconnects adminq and ctrlr synchronously
now.

If spdk_nvme_ctrlr_disconnect() is made asynchronous,
spdk_nvme_ctrlr_process_admin_completions() will complete to disconnect
adminq and ctrlr, and will return -ENXIO only if adminq is disconnected.

However even now spdk_nvme_ctrlr_process_admin_completions() returns
-ENXIO if adminq is disconnected.

So as a preparation, set a callback before calling spdk_nvme_ctrlr_disconnect()
and call the callback if it is set and spdk_nvme_ctrlr_process_admin_completions()
returns -ENXIO.

Besides, fix the return value of bdev_nvme_poll_adminq() in this patch.

Change-Id: I2559f86bb8cf9a92b5b386ed816c00b08c9832df
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10950
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
Shuhei Matsumoto
a76bbe3553 bdev/nvme: Disconnect and then free I/O qpair in a ctrlr reset sequence
As we do when deleting ctrlr_channel, disconnect and then free I/O
qpair in a ctrlr reset sequence.

Deleting ctrlr_channel and resetting ctrlr_channel may cause conflicts.
This patch processes such conflicts correctly.

If destroy_ctrlr_channel_cb() is executed between pending and executing
reset_destroy_qpair(), reset_destroy_qpair() is not executed because
ctrlr_channel is not found. In this case, destroy_qpair_channel()
starts disconnecting qpair and deletes ctrlr_channel. Then
disconnected_qpair_cb() releases a reference to poll group.

If destroy_ctrlr_channel_cb() is excuted between executing reset_destroy_qpair()
and disconnected_qpair_cb(), destroy_ctrlr_channel_cb() skips
ctrlr_channel for a reset sequence.

Change-Id: I1f49f74b94aefbea178680aa53ded3a12876c676
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10766
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-03-21 10:49:11 +00:00
John Levon
586d1d6571 nvmf/vfio-user: don't read from completion entry
We were accidentally reading the spdk_nvme_status from the CPL; on one
test, this was contributing to 2% of cache misses.

Signed-off-by: John Levon <john.levon@nutanix.com>
Change-Id: I7c967690458a183799f8d835360800d3094c3131
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11849
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: Thanos Makatos <thanos.makatos@nutanix.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2022-03-18 23:25:14 +00:00
Jon Kohler
7a9d089b68 nvmf: cleanup ana_reporting branching in spdk_nvmf_ctrlr_identify_ctrlr
Trivial chore, cleanup multiple branches for subsystem->flags.ana_reporting
that can be collapsed wtihin spdk_nvmf_ctrlr_identify_ctrlr, which makes the
code easier to read.

Signed-off-by: Jon Kohler <jon@nutanix.com>
Change-Id: Icb2064f078d730d1f28f299582dc46254c7f6df3
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11951
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
2022-03-18 08:02:10 +00:00
Krzysztof Karas
900d049925 CHANGELOG: add a note about scheduler changes
Change-Id: Ia824052f10bc2ebf80015b3e784c3f995d0287e1
Signed-off-by: Krzysztof Karas <krzysztof.karas@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11887
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2022-03-17 17:41:51 +00:00
Krzysztof Karas
835494b53a docs: update scheduler documentation
Updated scheduler documentation with information
about thread and core workloads, scheduling process
and dynamic scheduler parameters.

Added descriptions of new dynamic scheduler parameters
in jsonrpc.md.

Change-Id: I567efe21c425c13c16235d7976aad6ae961381bb
Signed-off-by: Krzysztof Karas <krzysztof.karas@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11886
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
2022-03-17 17:41:51 +00:00
Yuriy Umanets
8ec34933e9 bdev/crypto: Add qp_desc_nr to struct vbdev_crypto
At the moment MLX5 uses different number of qp descriptors than the
other pmd crypto drivers. Adding it to vbdev_crypto on init and re-use
everywhere we need it.

Signed-off-by: Yuriy Umanets <yumanets@nvidia.com>
Change-Id: Iea4d4787fc5fd91f27c4a70cf78c5660f09bc854
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11878
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: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-16 08:20:03 +00:00
Yuriy Umanets
0d857f441c bdev/crypto: Zero out key and key2 before release.
Even released memory contains key and key2 until it is re-allocated
for other purposes. Zero out key and key2 when not longer needed.

Signed-off-by: Yuriy Umanets <yumanets@nvidia.com>
Change-Id: If80f3faeb98b5b5acab7f2f857f284909247d1ac
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11877
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: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-16 08:20:03 +00:00
Yuriy Umanets
15a5bd8264 bdev/crypto: Rename AES_CBC_IV_LENGTH to IV_LENGTH
Since IV length is the same for all pmd crypto drivers,
AES_CBC_IV_LENGTH is renamed to IV_LENGTH.

Signed-off-by: Yuriy Umanets <yumanets@nvidia.com>
Change-Id: If8769db119eb599a17c267e8950f18f5a0ea995b
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11875
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: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2022-03-16 08:20:03 +00:00
Liu Xiaodong
884bcfcf15 bdev_nvme: update reset_start_tsc for failover
When connection is disconnected, bdev_nvme will call
bdev_nvme_failover, and then reset the controller.
nvme_ctrlr->reset_start_tsc should be updated in function
bdev_nvme_failover, then bdev_nvme_check_xxx_timeout can
work well.

Change-Id: I99b639545e9dd4082cdc14696bb7872cb4917b1d
Signed-off-by: Liu Xiaodong <xiaodong.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11957
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
2022-03-16 08:19:58 +00:00
Chunsong Feng
57dc541c0e rdma: set rnr_retry_count when rq is used
When rq is used, rnr_retry_count is not set. As a result, the initiator
cannot connect to the target after some error. Set the rnr_retry_count
to avoid infinite retries.

Fix issue #2429

Signed-off-by: Chunsong Feng <fengchunsong@huawei.com>
Change-Id: Iab03ea5ff10f5a9759c41f26589731aa92ef2f56
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11946
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
2022-03-16 08:19:49 +00:00
Krzysztof Karas
ca8e6d2361 event: use implemented set/get methods in RPC calls
Make use of code implemented in previous patches in the series
to get and set dynamic scheduler values.

Modifiy app.py and rpc.py to accomodate new changes and allow
user to specify scheduler parameters in the RPC calls.

Change-Id: I6173aefbf1d774b91b80ee5bce67eea80a2ab23d
Signed-off-by: Krzysztof Karas <krzysztof.karas@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11449
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
2022-03-16 08:19:26 +00:00
Krzysztof Karas
32da70152f scheduler: create and parse JSON values for dynamic scheduler params
Creates a JSON on scheduler side to return after .get_opts is called
and parses a JSON on .set_opts call.

The JSON passed to dynamic scheduler on .set_stats is a copy of a
pointer already available during RPC framework_set_scheduler call.

Getting and setting scheduler stats via RPC calls is going to be
implemented in the next patch in this series.

Change-Id: I62880a71066a140c74336a5725e7b10952008e5c
Signed-off-by: Krzysztof Karas <krzysztof.karas@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11448
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
2022-03-16 08:19:26 +00:00
Michal Berger
3289b8f59b test/nvmf: Fix logic in setting $is_hw
Signed-off-by: Michal Berger <michallinuxstuff@gmail.com>
Change-Id: I30acbe690646ffe771445d1f4fcc944cf34704c6
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11846
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Pawel Piatek <pawelx.piatek@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
2022-03-15 20:27:53 +00:00
Shuhei Matsumoto
068ca77ab2 bdev/nvme: Disconnect and then free I/O qpair when deleting ctrlr_channel
For RDMA transport, current synchronous qpair disconnect occupied CPU for
a second when qpair disconnect gets timeout.

To remove this limitation, we will do the following:
- make spdk_nvme_ctrlr_disconnect_io_qpair() asynchronous,
- spdk_nvme_qpair_process_completions() returns -ENXIO only if the
  qpair is actually disconnected.

Even at this patch, spdk_nvme_poll_group_process_completions() invokes
disconnected_qpair_cb only if a qpair is actually disconnected. This
behavior will be maintained.

To use the upcoming asynchronous qpair disconnect easily, when
deleting a ctrlr_channel, disconnect the qpair, and then free the qpair
and release a reference to the poll group when the qpair is actually
disconnected.

We need to delete a nvme_qpair asynchronously after the corresponding
nvme_ctrlr_channel is deleted and defer the deletion of the corresponding
nvme_ctrlr until the nvme_qpair is deleted. To satisfy this requirement,
utilize the reference count of the nvme_ctrlr.

disconnected_qpair_cb() may call spdk_nvme_ctrlr_free_io_qpair() and
spdk_io_device_unregister() successively. The spdk_io_device_unregister()
will execute spdk_nvme_detach_async() from its callback.
spdk_nvme_ctrlr_free_io_qpair() has to complete earlier than
spdk_nvme_detach_async() starts. spdk_nvme_ctrlr_free_io_qpair() is
executed after unwinding stack. spdk_nvme_detach_async() is executed
after sending a message. Sending message is later than unwinding stack.
Hence the requirement is satisfied naturally.

spdk_io_device_unregister() for the nvme_ctrlr is required to be called
on the nvme_ctrlr->thread. To satisfy this requirement, redirect
nvme_ctrlr_unregister() to the nvme_ctrlr->thread. This change is too
small to stand as an independent patch. So include the change in this
patch.

Change-Id: Id8c01966c40b1dae9c4ef17f1b0b3f60a0bd17d5
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10765
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: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2022-03-15 09:05:09 +00:00