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5 Commits

Author SHA1 Message Date
Tomasz Kulasek
fd2af7afa9 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

Change-Id: Ia1ffef566bb745edb55c54d6786ea481a35bbefd
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/474273
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
 2019-11-28 12:36:58 +00:00
Tomasz Kulasek
82a54d29f6 lib/nvme: fix nvme_io_msg_ctrlr_unregister with no io_msg_producer 
Change-Id: If2e0d00560311948570a2d7113dc5f730d937c0c
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/474257
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
 2019-11-21 08:01:57 +00:00
Tomasz Kulasek
9eb0ffa90c 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


Change-Id: I60153ebbfb0d0b22575128d106f9333c3887213d
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/474096
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>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
 2019-11-21 08:01:57 +00:00
Tomasz Kulasek
53184430a5 lib/nvme: fix do not use external_io_msg_qpair after free 
Change-Id: I20ef8303c2fae6abf43d15ebb025ea368c0dfd67
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/473282
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Seth Howell <seth.howell@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
 2019-11-21 08:01:57 +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