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nvme: create _nvme_get_host_buffer_sector_size helper function

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Create a _nvme_get_host_buffer_sector_size helper function,
to avoid the same code being duplicated in several functions.

Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Change-Id: I8c14683c683a44e03c97eefa186833831f754bcc
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6035
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Niklas Cassel 2021-01-21 21:46:03 +00:00 committed by Tomasz Zawadzki
parent ffd18d43e3
commit c078941ca1
1 changed files with 20 additions and 26 deletions
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46
lib/nvme/nvme_ns_cmd.c
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@ -62,6 +62,21 @@ nvme_ns_check_request_length(uint32_t lba_count, uint32_t sectors_per_max_io,
return child_per_io >= qdepth;
}
static inline uint32_t
_nvme_get_host_buffer_sector_size(struct spdk_nvme_ns *ns, uint32_t io_flags)
{
uint32_t sector_size = ns->extended_lba_size;
if ((io_flags & SPDK_NVME_IO_FLAGS_PRACT) &&
(ns->flags & SPDK_NVME_NS_EXTENDED_LBA_SUPPORTED) &&
(ns->flags & SPDK_NVME_NS_DPS_PI_SUPPORTED) &&
(ns->md_size == 8)) {
sector_size -= 8;
}
return sector_size;
}
static struct nvme_request *
_nvme_add_child_request(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
const struct nvme_payload *payload,
@ -95,20 +110,10 @@ _nvme_ns_cmd_split_request(struct spdk_nvme_ns *ns,
uint32_t sectors_per_max_io, uint32_t sector_mask,
uint16_t apptag_mask, uint16_t apptag)
{
uint32_t sector_size;
uint32_t md_size = ns->md_size;
uint32_t sector_size = _nvme_get_host_buffer_sector_size(ns, io_flags);
uint32_t remaining_lba_count = lba_count;
struct nvme_request *child;
sector_size = ns->extended_lba_size;
if ((io_flags & SPDK_NVME_IO_FLAGS_PRACT) &&
(ns->flags & SPDK_NVME_NS_EXTENDED_LBA_SUPPORTED) &&
(ns->flags & SPDK_NVME_NS_DPS_PI_SUPPORTED) &&
(md_size == 8)) {
sector_size -= 8;
}
while (remaining_lba_count > 0) {
lba_count = sectors_per_max_io - (lba & sector_mask);
lba_count = spdk_min(remaining_lba_count, lba_count);
@ -123,7 +128,7 @@ _nvme_ns_cmd_split_request(struct spdk_nvme_ns *ns,
remaining_lba_count -= lba_count;
lba += lba_count;
payload_offset += lba_count * sector_size;
md_offset += lba_count * md_size;
md_offset += lba_count * ns->md_size;
}
return req;
@ -387,20 +392,9 @@ _nvme_ns_cmd_rw(struct spdk_nvme_ns *ns, struct spdk_nvme_qpair *qpair,
uint32_t io_flags, uint16_t apptag_mask, uint16_t apptag, bool check_sgl)
{
struct nvme_request *req;
uint32_t sector_size;
uint32_t sectors_per_max_io;
uint32_t sectors_per_stripe;
sector_size = ns->extended_lba_size;
sectors_per_max_io = ns->sectors_per_max_io;
sectors_per_stripe = ns->sectors_per_stripe;
if ((io_flags & SPDK_NVME_IO_FLAGS_PRACT) &&
(ns->flags & SPDK_NVME_NS_EXTENDED_LBA_SUPPORTED) &&
(ns->flags & SPDK_NVME_NS_DPS_PI_SUPPORTED) &&
(ns->md_size == 8)) {
sector_size -= 8;
}
uint32_t sector_size = _nvme_get_host_buffer_sector_size(ns, io_flags);
uint32_t sectors_per_max_io = ns->sectors_per_max_io;
uint32_t sectors_per_stripe = ns->sectors_per_stripe;
req = nvme_allocate_request(qpair, payload, lba_count * sector_size, lba_count * ns->md_size,
cb_fn, cb_arg);