Previously we didn't post the response for CREATE IO SQ command
until the queue pair is connected finally, but for coming live
migration support, we will connect IO queue pairs in the destination
VM, and this function will also be called for this case, so here
we add a flag to indicate the CREATE IO SQ case.
Change-Id: Iab4c64a7ebb72bcffbfff712dc729c40eead7c7d
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9464
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Reviewed-by: Ben Walker <benjamin.walker@intel.com>
The miration region data structure is from `vfio_device_migration_info`
defined in `linux/vfio.h`, `vfio_device_migration_info` is in the 0th
offset of the VFIO_REGION_SUBTYPE_MIGRATION region, and in vfio-user,
we reserve first one page of BAR9 for this MMIO accesses.
libvfio-user already helps us to hide some implementation details
based on vfio migration specification, here we just use the two
fields to help the migration process.
Change-Id: I8917ba892bbfdfdf4f135f5d6b4923ab0e4a6250
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7628
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
We will report the live migration region to VM via sparse
mmap, offset after 0x1000 is the NVMe device state data
structure, and offset start from 0 is the structure
vfio_device_migration_info defined by the VFIO driver.
All accesses between 0x0-0x1000 will use the MMIO callbacks,
and accesses to NVMe device state will use shared memory map
way.
Change-Id: Ib456fc61f587c1bffa8b38506b4480a6066abe87
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7627
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
We will use the NVMe device state data structure to save/restore
a NVMe controller in source/destination VM.
NVMe device migration region is defined as below:
----------------------------------------------------------------------
| nvme_migr_device_state | private controller data | queue pairs | BARs |
----------------------------------------------------------------------
Change-Id: Idc73976e1de7f6da2da58e71db86df8cbb0d314d
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7626
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
For CREATE IO SQ command, we will defer to post completion
until the SQ was connected, we may call post_completion()
in different threads, so here we will send a message
to CQ thread when necessary.
Change-Id: I87a0f8982811c76ce8eb49db6a136f4cbe6e0a93
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11078
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We will assign each SQ with different poll group in round
robin way by default, this may cause race condition to
post completions to one CQ in different threads, so here
we will assign the SQs which share one CQ into same poll
group.
Also enable multiple cores NVMe compliance tests so that
to cover shared IO CQ case.
Change-Id: I9d7cc78aaedceed23986d9f89ed945e0eb337e09
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11115
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Previously we mixed SQ/CQ definition together, one queue pair
data structure may contain CQ,SQ or both CQ and SQ separately,
while here, we split the queue pair definition into SQ and CQ
respectively as code cleanup.
The NVMf library uses queue pair concept, but for vfio-user
case, each SQ created by VM is mapped to NVMf queue pair, so
we also change `connected_qps` to `connected_sqs` to reflect
the fact.
No actual code logic change in this commit.
Change-Id: I293ccbfbf054fe864d348fc56793dd1ccd366f6d
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11036
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libvfio-user will call quiesce callback when there are
memory region add/remove and device state change requests
from client, and in the quiesce callback, we will pause
the subsystem so that it's safe to do everything after
it, then after quiesce callback, we will resume the
subsystem. The quiesce callback is also used in
live migration, each device state change will quiesce
the device first.
Change-Id: I3a6a0320ad76c6b2d1d65c754b9f79cce5c9c683
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10620
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
We will use the controller state to implement the coming
device quiesce feature, it's safe to do anyting when
a subsystem is in PAUSED state.
Change-Id: I3b466ed01848e668a1ffcea1d4f1466e971afa23
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10619
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Users may remove the listener while VM is connected, the endpoint is
associated with Unix Domain socket file, we should destroy the endpoint,
however, the controller maybe still active for now, because nvmf
library will help us to disconnect all queue pairs in asynchronous
way. Here we use the same way as the NVMf library to destroy the
controller when there is no connected queue pairs.
Fix#2246.
Change-Id: I0775d5294269d848d859968edafc8eaa1d89a32c
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10379
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The controller may be freed eailer than endpoint, so we still
need to unregister the memory region from SPDK. The case
can happen when removing the listener while VM is connected.
Change-Id: I95d49cefdbff3e0bdea316fac824ef8b218fcd2c
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10378
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We should hold the transport lock to iterate endpoints.
Fix issue #2313.
Change-Id: I8e0539a51e843a3299908d9da7749fe9becb5e7e
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11037
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Reviewed-by: Dong Yi <dongx.yi@intel.com>
Reviewed-by: John Levon <levon@movementarian.org>
We met an issue that client got a NVMe completion with old SC
bit, so we add a memory barrier here to ensure the NVMe completion
is fully populated.
Fix issue #2323.
Change-Id: I7887d789a0acd3634a10aa7dc8de81a153137ae7
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11076
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
For the purpose to support shared IO CQ feature, we will construct
the queue pair data structure at the beginning, and setup SQ/CQ
separately in CREATE IO SQ/CQ routine.
Previously we will disconnect queue pair when got a DELETE IO CQ
command, now we disconnect queue pair when got a DELETE IO SQ command,
and in the disconnect completion callback, we will release the IO SQ
resources, there is a case that the VM will just RESET/SHUTDOWN
controller when IO queue pairs are connected, for this case, we
will also try to release CQ resources in the disconnect completion
callback.
`free_qp` function now is only called when destroying a controller.
Change-Id: I45ec679ddb63bdf1feeba5dc2bd39cae3ba4aa89
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10532
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Reviewed-by: Thanos Makatos <thanos.makatos@nutanix.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
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Currently we only use round robin way to assign queue
pair to each poll group.
Change-Id: I8efaf3ef25402102dd1eaa7f7aa8bd8bbe071c25
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11114
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Reviewed-by: John Levon <levon@movementarian.org>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Acceptor poller is registered using rate value
from transport opts structure, but this structure is
initialized on generic transport layer when create()
function completes, so at this time acceptor poll rate
is 0.
Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Change-Id: I2138825f3ff9dd3cc0ccaa65e8d5c23aab338ad4
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11095
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Reviewed-by: Anil Veerabhadrappa <anil.veerabhadrappa@broadcom.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Set the SQ/CQ size to 0 so that we will not try to remmap
the ADMIN queue pair in the memory region callback before
the ADMIN queue pair was enabled.
Change-Id: I739a2ec3abcb54b17f31f2bc120312cd02ffeef1
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10531
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When deleting a CQ, we will use its reference count to check
how many SQs associate with it.
Change-Id: Ic82e50de0fa92d2f03119ac2cc90ef86a0ea375e
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10530
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
This is a preparation to support shared IO CQ case, and we will
create/delete SQ/CQ separately, so define the queue state as the
first step.
Change-Id: Ie7b5807dc4aa5a2c117e15f61f3a9baa60135653
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10529
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
Macro PCI_CFG_SPACE_EXP_SIZE isn't defined in kernel 4.9.x, so
we use a fixed value here instead.
Fix issue #2282.
Change-Id: Ife1444e919e4c1dc9328437002c15befe2f393e7
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10691
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Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
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Not every transport requires accept poller - transport specific
layer can have its own policy and way of handling new connection.
APIs to notify generic layer are already in place
- spdk_nvmf_poll_group_add
- spdk_nvmf_tgt_new_qpair
Having accept poller removed should simplify interrupt mode impl
in transport specific layer.
Fixes issue #1876
Change-Id: Ia6cac0c2da67a298e88956734c50fb6e6b7521f1
Signed-off-by: Jacek Kalwas <jacek.kalwas@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7268
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
On aarch64 platforms, doorbells update from guest VM may not be seen
on SPDK target side. This is because there is memory type mismatch
situation here. That is on guest VM side, the doorbells are treated as
device memory while on SPDK target side, it is treated as normal
memory. And this situation cause problem on ARM platform.
Refer to "https://developer.arm.com/documentation/102376/0100/
Memory-aliasing-and-mismatched-memory-types". Only using spdk_mb()
cannot fix this. Use "dc civac" to invalidate cache may solve this.
Profiling data did not show big performance degradataion.
Signed-off-by: Rui Chang <rui.chang@arm.com>
Change-Id: I9a18718f8c4307b3007b18c32ab02e6796548958
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10222
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Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
The nvmf library will use INTEL VID/SSVID/IEEE values by default,
each transport can overwrite them if needed.
Change-Id: I9dad521c4d080b6f0cc1aaeb4b5d5f6863c6846d
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10095
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Reviewed-by: Jim Harris <james.r.harris@intel.com>
Doorbell offset starts from 0x1000 is defined by the NVMe
specification, so rename it to remove `VFIO_USER` prefix.
Change-Id: Ie34b12b3d2618f9b0ad0cf7ccbb103ad2c900f47
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10364
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Calculate supported maximum number of queue pairs based on
BAR0 size, this value isn't allowed to change at runtime, also
define BAR4/5 based on number of MSIX vectors.
Since the maximum number of queues is a large value(512), so we
still define a default value when starting, users still can
overwrite this value with a number no greater than 512.
Change-Id: I1b4b6bdf2ff9d129c8bdd493ffdf0a51f8772d51
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10334
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libvfio-user will save a copy inside the library.
Change-Id: If7bb052b03fb92e46abe50fa945b812d149ef01d
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10363
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Change-Id: I58794b7b946eeb8ff82512905af0a296e3b534aa
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9817
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The pointer to struct spdk_nvmf_ctrlr is used to save mandatory
controller registers to the migration region.
Also rename some ctrlr/qpiar to vu_ctrlr/vu_qpiar.
Change-Id: Ifcb862bf4543a9df3c62d3b0a57b7f93228ccaba
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7629
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Reviewed-by: Thanos Makatos <thanos.makatos@nutanix.com>
1. use the transport lock to protect transport endpoints list.
2. don't use mixed errno and -1 as the return value, use -1 for all error cases.
Change-Id: I657fa06a6d82ee8dbeefaa3397df2285ba574b80
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9579
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When destroying controller, we will disconnect each connected qpair,
and in the spdk_nvmf_qpair_disconnect() call, qpair_fini() will also
try to hold the same lock, so existing vfio-user implementation assume
that qpair_fini() will not be called in the same context. Patch
https://review.spdk.io/gerrit/c/spdk/spdk/+/8963 remind me that
vfio-user has this issue. While here, we add one more thread poll
to avoid such issue.
Change-Id: I83b82ddcce3eb54c724291223e794dcb53a08059
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9998
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CAP.CQR (Contiguous Queues Required) is always 1, so we should
return invalid field when PC bit is 1 and return Invalid Interrupt
Vector if Interrupt Vector is too big.
Also fix the issue that just creat/delete a CQ.
Change-Id: I7cc64a5946a1ed3161448fca8b433d08e5fee715
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10080
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
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User may configure opts.max_qpairs_per_ctrlr, so use
opts.max_qpairs_per_ctrlr instead of using fixed default
NVMF_VFIO_USER_DEFAULT_MAX_QPAIRS_PER_CTRLR.
Also do not allow users to configure max_qpairs_per_ctrl >
NVMF_VFIO_USER_DEFAULT_MAX_QPAIRS_PER_CTRLR.
Signed-off-by: Swapnil Ingle <swapnil.ingle@nutanix.com>
Change-Id: Id9f1f796559f3bb8b2d3f5031606050470681b99
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9994
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: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
It's too strict to fail the controller when there are no free requests.
Change-Id: I0a66ff2d294a2fd9326506ea50af4213aaaf8e92
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9848
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: GangCao <gang.cao@intel.com>
For GET/SET FEATURES command, some feature IDs will have data buffer
while some don't have, so here we will return the buffer length base
on the feature ID. The length is defined by the specification.
Change-Id: Ie9798585fc74544b77998aeebc2a20614c1c25f0
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9689
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: Jim Harris <james.r.harris@intel.com>
The spec treats the sizes (MQES or qsize from create/delete
IO queue command) as a 0-based value of uint16_t, but vfio-user
treats them as 1-based value, so we need to use uint32_t to
make sure the value can't overflow. The same for NLB(number of
logical blocks).
Change-Id: I7654b7e12234525c0fce78a713dd50097e9b3d58
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9632
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: Jim Harris <james.r.harris@intel.com>
The function is used to check the IO SQ or CQ exists or not,
so return bool type is better and also rename it.
Change-Id: I1af2a25255b012dcf1e1952b828617ededf9b897
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9680
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: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Andreas Economides <andreas.economides@nutanix.com>
Previously vfio-user will hit an error when creating a deleted IO SQ.
For lookup_io_q() function, actually we should not use the queue's
address to check the queue is exist or not, as when there is a memory
removal, we will also set the queue's address to NULL and reset it again,
so here we use the queue state to indicate the queue is exist or not.
Fix issue #2174.
Change-Id: I56bdd63947c2b30a598c427e64ff2dafe1cc1d2e
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9605
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>
Previously we only use an assertion to address this sceanrio.
Fix issue #2173.
Change-Id: I7a6e715977218d2a3a08c48a9935880f3fe4ec63
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9604
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Andreas Economides <andreas.economides@nutanix.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
According to the specification, we should also post an AER
error event for this error case.
Fix#2171.
Change-Id: Ifb2343453ea5e36ce244938a939537ee6ed1c4e1
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9584
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>
