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nvmf/rpc: add max_namespaces to get_nvmf_subsystems

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This is one of the construct_nvmf_subsystems parameters, so we need a
public API to retrieve it for informational purposes and for the
JSON-RPC configuration dump.

Change-Id: I8a7cafa487209311e964ea9ff1b8e09ee8b23c07
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/414864
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Daniel Verkamp 2018-06-12 10:11:45 -07:00 committed by Jim Harris
parent 34de1542eb
commit 6546fd10f8
3 changed files with 22 additions and 0 deletions
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9
include/spdk/nvmf.h
View File

@ -566,6 +566,15 @@ struct spdk_nvmf_ns *spdk_nvmf_subsystem_get_next_ns(struct spdk_nvmf_subsystem
struct spdk_nvmf_ns *spdk_nvmf_subsystem_get_ns(struct spdk_nvmf_subsystem *subsystem, struct spdk_nvmf_ns *spdk_nvmf_subsystem_get_ns(struct spdk_nvmf_subsystem *subsystem,
uint32_t nsid); uint32_t nsid);
/**
* Get the maximum number of namespaces allowed in a subsystem.
*
* \param subsystem Subsystem to query.
*
* \return Maximum number of namespaces allowed in the subsystem, or 0 for unlimited.
*/
uint32_t spdk_nvmf_subsystem_get_max_namespaces(const struct spdk_nvmf_subsystem *subsystem);
/** /**
* Get a namespace's NSID. * Get a namespace's NSID.
* *

7
lib/event/subsystems/nvmf/nvmf_rpc.c
View File

@ -251,9 +251,16 @@ dump_nvmf_subsystem(struct spdk_json_write_ctx *w, struct spdk_nvmf_subsystem *s
if (spdk_nvmf_subsystem_get_type(subsystem) == SPDK_NVMF_SUBTYPE_NVME) { if (spdk_nvmf_subsystem_get_type(subsystem) == SPDK_NVMF_SUBTYPE_NVME) {
struct spdk_nvmf_ns *ns; struct spdk_nvmf_ns *ns;
struct spdk_nvmf_ns_opts ns_opts; struct spdk_nvmf_ns_opts ns_opts;
uint32_t max_namespaces;
spdk_json_write_name(w, "serial_number"); spdk_json_write_name(w, "serial_number");
spdk_json_write_string(w, spdk_nvmf_subsystem_get_sn(subsystem)); spdk_json_write_string(w, spdk_nvmf_subsystem_get_sn(subsystem));
max_namespaces = spdk_nvmf_subsystem_get_max_namespaces(subsystem);
if (max_namespaces != 0) {
spdk_json_write_named_uint32(w, "max_namespaces", max_namespaces);
}
spdk_json_write_name(w, "namespaces"); spdk_json_write_name(w, "namespaces");
spdk_json_write_array_begin(w); spdk_json_write_array_begin(w);
for (ns = spdk_nvmf_subsystem_get_first_ns(subsystem); ns != NULL; for (ns = spdk_nvmf_subsystem_get_first_ns(subsystem); ns != NULL;

6
lib/nvmf/subsystem.c
View File

@ -1245,3 +1245,9 @@ spdk_nvmf_subsystem_get_ctrlr(struct spdk_nvmf_subsystem *subsystem, uint16_t cn
return NULL; return NULL;
} }
uint32_t
spdk_nvmf_subsystem_get_max_namespaces(const struct spdk_nvmf_subsystem *subsystem)
{
return subsystem->max_allowed_nsid;
}