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event/vmd: write_config_json support

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This patch adds support for saving VMD subsystem's configuration to a
JSON formatted file.  It allows saving and then loading configuration
with VMD enabled without having to send the `enable_vmd` RPC.

Change-Id: I59b380ec1e1f25f60f45d2363724ed7ac78c365c
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/473405
Community-CI: Broadcom SPDK FC-NVMe CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Konrad Sztyber 2019-11-06 10:06:14 +01:00 committed by Jim Harris
parent 6f3ca0804e
commit 933bf632d6
2 changed files with 27 additions and 3 deletions
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26
module/event/subsystems/vmd/vmd.c
View File

@ -42,6 +42,7 @@
#include "event_vmd.h"
static struct spdk_poller *g_hotplug_poller;
static bool g_enabled;
static int
vmd_hotplug_monitor(void *ctx)
@ -54,8 +55,7 @@ vmd_subsystem_init(void)
{
int rc;
/* If the poller is registered, the initialization already took place */
if (g_hotplug_poller != NULL) {
if (g_enabled) {
SPDK_ERRLOG("The initialization has already been performed\n");
return -EBUSY;
}
@ -66,12 +66,16 @@ vmd_subsystem_init(void)
return rc;
}
assert(g_hotplug_poller == NULL);
g_hotplug_poller = spdk_poller_register(vmd_hotplug_monitor, NULL, 1000000ULL);
if (g_hotplug_poller == NULL) {
SPDK_ERRLOG("Failed to register hotplug monitor poller\n");
return -ENOMEM;
}
g_enabled = true;
return 0;
}
@ -99,12 +103,28 @@ spdk_vmd_subsystem_fini(void)
spdk_subsystem_fini_next();
}
static void
spdk_vmd_write_config_json(struct spdk_json_write_ctx *w)
{
spdk_json_write_array_begin(w);
if (g_enabled) {
spdk_json_write_object_begin(w);
spdk_json_write_named_string(w, "method", "enable_vmd");
spdk_json_write_named_object_begin(w, "params");
spdk_json_write_object_end(w);
spdk_json_write_object_end(w);
}
spdk_json_write_array_end(w);
}
static struct spdk_subsystem g_spdk_subsystem_vmd = {
.name = "vmd",
.init = spdk_vmd_subsystem_init,
.fini = spdk_vmd_subsystem_fini,
.config = NULL,
.write_config_json = NULL,
.write_config_json = spdk_vmd_write_config_json,
};
SPDK_SUBSYSTEM_REGISTER(g_spdk_subsystem_vmd);

4
test/json_config/clear_config.py
View File

@ -153,6 +153,10 @@ def clear_vhost_subsystem(args, vhost_config):
args.client.call("vhost_delete_controller", {'ctrlr': vhost['params']['ctrlr']})
def clear_vmd_subsystem(args, vmd_config):
pass
def call_test_cmd(func):
def rpc_test_cmd(*args, **kwargs):
try: