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bf3d670796
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4 Commits

Author SHA1 Message Date
Tomasz Kulasek
bf3d670796 lib/nvme: stop all NVMe io producers on detach 
Now all registered producers should be stopped (unregistered) before
NVMe detach, otherwise NVMe controller cannot be safely detached.

This patch allows to stop all not unregistered io producers before
NVMe detach:

1. Callback to the "struct nvme_io_msg_producer" to stop producer
   started on selected controller.
2. On nvme_io_msg_ctrlr_detach() if there's some unregistered producers,
   stop all before freeing resources.

This approach also fixes issue with not to stop CUSE device when
NVMe controller is detached without unregistering producer (github
issue #1033).

	Fixes #1033

Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/474273 (master)

(cherry picked from commit fd2af7afa9)
Change-Id: Ia1ffef566bb745edb55c54d6786ea481a35bbefd
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/478350
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>
 2019-12-23 08:04:56 +00:00
Tomasz Kulasek
277cb377d9 lib/nvme: change api for io message 
API changes in this patch:

 1) nvme_io_msg_ctrlr_start                         => nvme_io_msg_ctrlr_register
 2) nvme_io_msg_ctrlr_stop with (shutdown == false) => nvme_io_msg_ctrlr_unregister
 3) nvme_io_msg_ctrlr_stop with (shutdown == true)  => nvme_io_msg_ctrlr_detach

Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/474096 (master)

(cherry picked from commit 9eb0ffa90c)
Change-Id: I60153ebbfb0d0b22575128d106f9333c3887213d
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/478346
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
 2019-12-23 08:04:56 +00:00
Tomasz Kulasek
9cd5302810 lib/nvme: fix do not use external_io_msg_qpair after free 
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/473282 (master)

(cherry picked from commit 53184430a5)
Change-Id: I20ef8303c2fae6abf43d15ebb025ea368c0dfd67
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/478585
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>
Reviewed-by: Alexey Marchuk <alexeymar@mellanox.com>
 2019-12-23 08:04:56 +00:00
Maciej Szwed
72e079a880 lib/nvme: implement external IO processing 
This patch allows to send IO requests from external module to the nvme
device.

External module should call nvme_io_msg_ctrlr_start() to start IO message
producer on the controller and enable sending messages.

nvme_io_msg_send() is used to send IO to NVMe driver thread context,
where passed function will be called. Allowing the external module to
issue IO as needed.

NVMe driver users should poll spdk_nvme_io_msg_process() to move forward,
sending IO from external module and process their completions.

Change-Id: Ie59abac69870c4e4daa50120c747f3b620395921
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Signed-off-by: Maciej Szwed <maciej.szwed@intel.com>
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/471386
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
 2019-10-24 23:43:59 +00:00