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nvmet: introduce new max queue size configuration entry

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Using this port configuration, one will be able to set the maximal queue
size to be used for any controller that will be associated to the
configured port.

The default value stayed 1024 but each transport will be able to set the
its own values before enabling the port.

Introduce lower limit of 16 for minimal queue depth (same as we use in
the host fabrics drivers).

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Israel Rukshin <israelr@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Guixin Liu <kanie@linux.alibaba.com>
Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Max Gurtovoy
2024-01-23 16:40:31 +02:00
committed by Keith Busch
parent ad178ba9d9
commit ca2b221d89
3 changed files with 46 additions and 3 deletions
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4
drivers/nvme/target/nvmet.h
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@@ -163,6 +163,7 @@ struct nvmet_port {
void *priv;
bool enabled;
int inline_data_size;
int max_queue_size;
const struct nvmet_fabrics_ops *tr_ops;
bool pi_enable;
};
@@ -543,7 +544,8 @@ void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys,
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_MIN_QUEUE_SIZE 16
#define NVMET_MAX_QUEUE_SIZE 1024
#define NVMET_NR_QUEUES 128
#define NVMET_MAX_CMD(ctrl) (NVME_CAP_MQES(ctrl->cap) + 1)