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nvme: add API to get outstanding reqs number

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Added spdk_nvme_qpair_get_num_outstanding_reqs to get the number
of outstanding reqs for a specific qpair.

Change-Id: I55d75a7363ac63bd26db76594e70e8b17b3e5830
Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15916
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
This commit is contained in:
Richael Zhuang 2022-12-14 15:03:32 +08:00 committed by Tomasz Zawadzki
parent 41bf6280e9
commit 070d61f2d6
4 changed files with 24 additions and 0 deletions
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3
CHANGELOG.md
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@ -115,6 +115,9 @@ tag that was logged at least once.
Added `transport_tos` to `spdk_nvme_ctrlr_opts` to support setting of the "type of service"
value in the IPv4 header. Only RDMA is supported at this time.
Added API spdk_nvme_qpair_get_num_outstanding_reqs to get the number of outstanding reqs of
a specified qpair.
### bdev_nvme
Updated `bdev_nvme_set_options` RPC (and rpc.py) to support the new `transport_tos` parameter.

14
include/spdk/nvme.h
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@ -3791,6 +3791,20 @@ void spdk_nvme_qpair_print_completion(struct spdk_nvme_qpair *qpair,
*/
uint16_t spdk_nvme_qpair_get_id(struct spdk_nvme_qpair *qpair);
/**
* Gets the number of outstanding requests for the specified qpair.
*
* This number is not decremented until after a request's callback function is completed.
*
* This number is not matched necessarily to the number of NVMe commands submitted by the
* user. For example, nvme driver may split a request due to MDTS limitations, that will
* also allocate a request for the parent, etc.
*
* \param qpair Pointer to the NVMe queue pair.
* \returns number of outstanding requests for the specified qpair.
*/
uint32_t spdk_nvme_qpair_get_num_outstanding_reqs(struct spdk_nvme_qpair *qpair);
/**
* \brief Prints (SPDK_NOTICELOG) the contents of an NVMe submission queue entry (command).
*

6
lib/nvme/nvme_qpair.c
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@ -1197,3 +1197,9 @@ spdk_nvme_qpair_get_id(struct spdk_nvme_qpair *qpair)
{
return qpair->id;
}
uint32_t
spdk_nvme_qpair_get_num_outstanding_reqs(struct spdk_nvme_qpair *qpair)
{
return qpair->num_outstanding_reqs;
}

1
lib/nvme/spdk_nvme.map
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@ -178,6 +178,7 @@
spdk_nvme_qpair_print_command;
spdk_nvme_qpair_print_completion;
spdk_nvme_qpair_get_id;
spdk_nvme_qpair_get_num_outstanding_reqs;
spdk_nvme_print_command;
spdk_nvme_print_completion;