diff options
| author |   Jay Sternberg <jay.e.sternberg@intel.com> | 2018-11-12 13:56:40 -0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-12-07 22:26:57 -0700 |
| commit | b662a078576e7d6e235b4e1b94863f0474cd8555 (patch) | |
| tree | caa02a640907f3cd851d628ec71679ab8fe9c082 /drivers/nvme/target/nvmet.h | |
| parent | nvmet: allow host connect even if no allowed subsystems are exported (diff) | |
| download | linux-dev-b662a078576e7d6e235b4e1b94863f0474cd8555.tar.xz linux-dev-b662a078576e7d6e235b4e1b94863f0474cd8555.zip | |
nvmet: enable Discovery Controller AENs
Add functions to find connections requesting Discovery Change events
and send a notification to hosts that maintain an explicit persistent
connection and have and active Asynchronous Event Request pending.
Only Hosts that have access to the Subsystem effected by the change
will receive notifications of Discovery Change event.
Call these functions each time there is a configfs change that effects
the Discover Log Pages.
Set the OAES field in the Identify Controller response to advertise the
support for Asynchronous Event Notifications.
Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com>
Reviewed-by: Phil Cayton <phil.cayton@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | drivers/nvme/target/nvmet.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 05b98f25d65c..31474940e373 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -139,6 +139,7 @@ struct nvmet_port { struct list_head subsystems; struct config_group referrals_group; struct list_head referrals; + struct list_head global_entry; struct config_group ana_groups_group; struct nvmet_ana_group ana_default_group; enum nvme_ana_state *ana_state; @@ -422,7 +423,7 @@ int nvmet_enable_port(struct nvmet_port *port); void nvmet_disable_port(struct nvmet_port *port); void nvmet_referral_enable(struct nvmet_port *parent, struct nvmet_port *port); -void nvmet_referral_disable(struct nvmet_port *port); +void nvmet_referral_disable(struct nvmet_port *parent, struct nvmet_port *port); u16 nvmet_copy_to_sgl(struct nvmet_req *req, off_t off, const void *buf, size_t len); @@ -432,6 +433,14 @@ u16 nvmet_zero_sgl(struct nvmet_req *req, off_t off, size_t len); u32 nvmet_get_log_page_len(struct nvme_command *cmd); +extern struct list_head *nvmet_ports; +void nvmet_port_disc_changed(struct nvmet_port *port, + struct nvmet_subsys *subsys); +void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys, + struct nvmet_host *host); +void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type, + u8 event_info, u8 log_page); + #define NVMET_QUEUE_SIZE 1024 #define NVMET_NR_QUEUES 128 #define NVMET_MAX_CMD NVMET_QUEUE_SIZE |