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nvmf: Adjust the data structure of spdk_nvmf_subsystem.

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Move the ctrlr and io_qpair out of spdk_nvmf_subsystem, package them
as a new data structure. Union the direct and virtual mode namespaces.

Change-Id: I839aee3372c6c57aa03a0be76f8aaeb5045ecdaf
Signed-off-by: Cunyin Chang <cunyin.chang@intel.com>
This commit is contained in:
Cunyin Chang 2016-07-22 12:06:25 +08:00 committed by Daniel Verkamp
parent 594c19bf69
commit 8c094266ac
5 changed files with 37 additions and 13 deletions
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1
app/nvmf_tgt/Makefile
View File

@ -53,6 +53,7 @@ SPDK_LIBS = \
$(SPDK_ROOT_DIR)/lib/conf/libspdk_conf.a \
$(SPDK_ROOT_DIR)/lib/util/libspdk_util.a \
$(SPDK_ROOT_DIR)/lib/memory/libspdk_memory.a \
$(SPDK_ROOT_DIR)/lib/bdev/libspdk_bdev.a \
LIBS += $(SPDK_LIBS) $(PCIACCESS_LIB)

5
lib/nvmf/request.c
View File

@ -237,7 +237,7 @@ nvmf_process_admin_cmd(struct spdk_nvmf_request *req)
default:
passthrough:
SPDK_TRACELOG(SPDK_TRACE_NVMF, "admin_cmd passthrough: opc 0x%02x\n", cmd->opc);
rc = spdk_nvme_ctrlr_cmd_admin_raw(subsystem->ctrlr,
rc = spdk_nvme_ctrlr_cmd_admin_raw(subsystem->ctrlr.direct.ctrlr,
cmd,
req->data, req->length,
nvmf_complete_cmd,
@ -249,6 +249,7 @@ passthrough:
}
return false;
}
}
static bool
@ -257,7 +258,7 @@ nvmf_process_io_cmd(struct spdk_nvmf_request *req)
struct spdk_nvmf_subsystem *subsystem = req->conn->sess->subsys;
int rc;
rc = spdk_nvme_ctrlr_cmd_io_raw(subsystem->ctrlr, subsystem->io_qpair,
rc = spdk_nvme_ctrlr_cmd_io_raw(subsystem->ctrlr.direct.ctrlr, subsystem->ctrlr.direct.io_qpair,
&req->cmd->nvme_cmd,
req->data, req->length,
nvmf_complete_cmd,

2
lib/nvmf/session.c
View File

@ -90,7 +90,7 @@ nvmf_init_nvme_session_properties(struct nvmf_session *session)
*/
/* Init the virtual controller details using actual HW details */
cdata = spdk_nvme_ctrlr_get_data(session->subsys->ctrlr);
cdata = spdk_nvme_ctrlr_get_data(session->subsys->ctrlr.direct.ctrlr);
memcpy(&session->vcdata, cdata, sizeof(struct spdk_nvme_ctrlr_data));
session->vcdata.aerl = 0;

15
lib/nvmf/subsystem.c
View File

@ -85,8 +85,8 @@ spdk_nvmf_subsystem_poller(void *arg)
/* For NVMe subsystems, check the backing physical device for completions. */
if (subsystem->subtype == SPDK_NVMF_SUBTYPE_NVME) {
spdk_nvme_ctrlr_process_admin_completions(subsystem->ctrlr);
spdk_nvme_qpair_process_completions(subsystem->io_qpair, 0);
spdk_nvme_ctrlr_process_admin_completions(subsystem->ctrlr.direct.ctrlr);
spdk_nvme_qpair_process_completions(subsystem->ctrlr.direct.io_qpair, 0);
}
/* For each connection in the session, check for RDMA completions */
@ -153,8 +153,8 @@ nvmf_delete_subsystem(struct spdk_nvmf_subsystem *subsystem)
spdk_nvmf_session_destruct(subsystem->session);
}
if (subsystem->ctrlr) {
spdk_nvme_detach(subsystem->ctrlr);
if (subsystem->ctrlr.direct.ctrlr) {
spdk_nvme_detach(subsystem->ctrlr.direct.ctrlr);
}
TAILQ_REMOVE(&g_subsystems, subsystem, entries);
@ -199,11 +199,10 @@ int
nvmf_subsystem_add_ctrlr(struct spdk_nvmf_subsystem *subsystem,
struct spdk_nvme_ctrlr *ctrlr)
{
subsystem->ctrlr = ctrlr;
subsystem->ctrlr.direct.ctrlr = ctrlr;
/* Assume that all I/O will be handled on one thread for now */
subsystem->io_qpair = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, 0);
if (subsystem->io_qpair == NULL) {
subsystem->ctrlr.direct.io_qpair = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, 0);
if (subsystem->ctrlr.direct.io_qpair == NULL) {
SPDK_ERRLOG("spdk_nvme_ctrlr_alloc_io_qpair() failed\n");
return -1;
}

27
lib/nvmf/subsystem.h
View File

@ -39,10 +39,13 @@
#include "spdk/event.h"
#include "spdk/nvme.h"
#include "spdk/queue.h"
#include "spdk/bdev.h"
struct spdk_nvmf_conn;
struct spdk_nvmf_subsystem;
#define MAX_NQN_SIZE 255
#define MAX_VIRTUAL_NAMESPACE 16
enum spdk_nvmf_subsystem_mode {
NVMF_SUBSYSTEM_MODE_DIRECT = 0,
@ -61,6 +64,27 @@ struct spdk_nvmf_host {
TAILQ_ENTRY(spdk_nvmf_host) link;
};
struct spdk_nvmf_ns {
uint32_t nsid;
struct spdk_bdev *bdev;
};
union spdk_nvmf_controller {
struct {
struct nvmf_session *session;
struct spdk_nvme_ctrlr *ctrlr;
struct spdk_nvme_qpair *io_qpair;
} direct;
struct {
struct nvmf_session *session;
struct spdk_nvmf_ns *ns_list[MAX_VIRTUAL_NAMESPACE];
uint16_t ns_count;
} virtual;
};
/*
* The NVMf subsystem, as indicated in the specification, is a collection
* of virtual controller sessions. Any individual controller session has
@ -72,8 +96,7 @@ struct spdk_nvmf_subsystem {
enum spdk_nvmf_subsystem_mode mode;
enum spdk_nvmf_subtype subtype;
struct nvmf_session *session;
struct spdk_nvme_ctrlr *ctrlr;
struct spdk_nvme_qpair *io_qpair;
union spdk_nvmf_controller ctrlr;
struct spdk_poller poller;