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nvmf: Add a pointer to the target to the subsystem

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This eliminates a couple of references to g_nvmf_tgt
and sets the stage for eliminating that global entirely
in the future.

Change-Id: I068d0874cc8ba122be780e8dbd55bb1efabe10b7
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/374876
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Ben Walker 2017-08-18 15:26:41 -07:00 committed by Jim Harris
parent d868cd0895
commit 02b640bfdf
3 changed files with 19 additions and 12 deletions
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13
lib/nvmf/ctrlr.c
View File

@ -59,7 +59,10 @@ spdk_nvmf_ctrlr_create(struct spdk_nvmf_subsystem *subsystem,
struct spdk_nvmf_fabric_connect_cmd *connect_cmd,
struct spdk_nvmf_fabric_connect_data *connect_data)
{
struct spdk_nvmf_ctrlr *ctrlr;
struct spdk_nvmf_ctrlr *ctrlr;
struct spdk_nvmf_tgt *tgt;
tgt = subsystem->tgt;
ctrlr = calloc(1, sizeof(*ctrlr));
if (ctrlr == NULL) {
@ -88,7 +91,7 @@ spdk_nvmf_ctrlr_create(struct spdk_nvmf_subsystem *subsystem,
ctrlr->async_event_config.raw = 0;
ctrlr->num_qpairs = 0;
ctrlr->subsys = subsystem;
ctrlr->max_qpairs_allowed = g_nvmf_tgt.opts.max_qpairs_per_ctrlr;
ctrlr->max_qpairs_allowed = tgt->opts.max_qpairs_per_ctrlr;
memcpy(ctrlr->hostid, connect_data->hostid, sizeof(ctrlr->hostid));
@ -100,7 +103,7 @@ spdk_nvmf_ctrlr_create(struct spdk_nvmf_subsystem *subsystem,
ctrlr->vcprop.cap.raw = 0;
ctrlr->vcprop.cap.bits.cqr = 1; /* NVMe-oF specification required */
ctrlr->vcprop.cap.bits.mqes = g_nvmf_tgt.opts.max_queue_depth - 1; /* max queue depth */
ctrlr->vcprop.cap.bits.mqes = tgt->opts.max_queue_depth - 1; /* max queue depth */
ctrlr->vcprop.cap.bits.ams = 0; /* optional arb mechanisms */
ctrlr->vcprop.cap.bits.to = 1; /* ready timeout - 500 msec units */
ctrlr->vcprop.cap.bits.dstrd = 0; /* fixed to 0 for NVMe-oF */
@ -235,9 +238,9 @@ spdk_nvmf_ctrlr_connect(struct spdk_nvmf_qpair *qpair,
* SQSIZE is a 0-based value, so it must be at least 1 (minimum queue depth is 2) and
* strictly less than max_queue_depth.
*/
if (cmd->sqsize == 0 || cmd->sqsize >= g_nvmf_tgt.opts.max_queue_depth) {
if (cmd->sqsize == 0 || cmd->sqsize >= subsystem->tgt->opts.max_queue_depth) {
SPDK_ERRLOG("Invalid SQSIZE %u (min 1, max %u)\n",
cmd->sqsize, g_nvmf_tgt.opts.max_queue_depth - 1);
cmd->sqsize, subsystem->tgt->opts.max_queue_depth - 1);
INVALID_CONNECT_CMD(sqsize);
return;
}

2
lib/nvmf/nvmf_internal.h
View File

@ -86,6 +86,8 @@ struct spdk_nvmf_subsystem {
enum spdk_nvmf_subtype subtype;
bool is_removed;
struct spdk_nvmf_tgt *tgt;
char sn[MAX_SN_LEN + 1];
struct spdk_nvmf_ns ns[MAX_VIRTUAL_NAMESPACE];

16
lib/nvmf/subsystem.c
View File

@ -165,9 +165,11 @@ spdk_nvmf_create_subsystem(const char *nqn,
return NULL;
}
g_nvmf_tgt.current_subsystem_id++;
subsystem->tgt = &g_nvmf_tgt;
subsystem->id = g_nvmf_tgt.current_subsystem_id;
subsystem->tgt->current_subsystem_id++;
subsystem->id = subsystem->tgt->current_subsystem_id;
subsystem->subtype = type;
subsystem->cb_ctx = cb_ctx;
subsystem->connect_cb = connect_cb;
@ -177,8 +179,8 @@ spdk_nvmf_create_subsystem(const char *nqn,
TAILQ_INIT(&subsystem->hosts);
TAILQ_INIT(&subsystem->ctrlrs);
TAILQ_INSERT_TAIL(&g_nvmf_tgt.subsystems, subsystem, entries);
g_nvmf_tgt.discovery_genctr++;
TAILQ_INSERT_TAIL(&subsystem->tgt->subsystems, subsystem, entries);
subsystem->tgt->discovery_genctr++;
return subsystem;
}
@ -213,8 +215,8 @@ spdk_nvmf_delete_subsystem(struct spdk_nvmf_subsystem *subsystem)
spdk_nvmf_subsystem_bdev_detach(subsystem);
TAILQ_REMOVE(&g_nvmf_tgt.subsystems, subsystem, entries);
g_nvmf_tgt.discovery_genctr++;
TAILQ_REMOVE(&subsystem->tgt->subsystems, subsystem, entries);
subsystem->tgt->discovery_genctr++;
free(subsystem);
}
@ -240,7 +242,7 @@ spdk_nvmf_subsystem_add_host(struct spdk_nvmf_subsystem *subsystem, const char *
}
TAILQ_INSERT_HEAD(&subsystem->hosts, host, link);
g_nvmf_tgt.discovery_genctr++;
subsystem->tgt->discovery_genctr++;
return 0;
}