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examples/nvme/hello_world: Optional VMD enumeration

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New flag -V was added for VMD enabling.

Change-Id: I2d090a70b9d9b2bd996467a9b3da908f6eed1062
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/457601
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Wojciech Malikowski 2019-06-11 07:55:22 -04:00 committed by Darek Stojaczyk
parent de6a68e031
commit cda27398e5
1 changed files with 41 additions and 0 deletions
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41
examples/nvme/hello_world/hello_world.c
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@ -34,6 +34,7 @@
#include "spdk/stdinc.h" #include "spdk/stdinc.h"
#include "spdk/nvme.h" #include "spdk/nvme.h"
#include "spdk/vmd.h"
#include "spdk/env.h" #include "spdk/env.h"
struct ctrlr_entry { struct ctrlr_entry {
@ -52,6 +53,8 @@ struct ns_entry {
static struct ctrlr_entry *g_controllers = NULL; static struct ctrlr_entry *g_controllers = NULL;
static struct ns_entry *g_namespaces = NULL; static struct ns_entry *g_namespaces = NULL;
static bool g_vmd = false;
static void static void
register_ns(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_ns *ns) register_ns(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_ns *ns)
{ {
@ -322,11 +325,44 @@ cleanup(void)
} }
} }
static void
usage(const char *program_name)
{
printf("%s [options]", program_name);
printf("\n");
printf("options:\n");
printf(" -V enumerate VMD\n");
}
static int
parse_args(int argc, char **argv)
{
int op;
while ((op = getopt(argc, argv, "V")) != -1) {
switch (op) {
case 'V':
g_vmd = true;
break;
default:
usage(argv[0]);
return 1;
}
}
return 0;
}
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
int rc; int rc;
struct spdk_env_opts opts; struct spdk_env_opts opts;
rc = parse_args(argc, argv);
if (rc != 0) {
return rc;
}
/* /*
* SPDK relies on an abstraction around the local environment * SPDK relies on an abstraction around the local environment
* named env that handles memory allocation and PCI device operations. * named env that handles memory allocation and PCI device operations.
@ -343,6 +379,11 @@ int main(int argc, char **argv)
printf("Initializing NVMe Controllers\n"); printf("Initializing NVMe Controllers\n");
if (g_vmd && spdk_vmd_init()) {
fprintf(stderr, "Failed to initialize VMD."
" Some NVMe devices can be unavailable.\n");
}
/* /*
* Start the SPDK NVMe enumeration process. probe_cb will be called * Start the SPDK NVMe enumeration process. probe_cb will be called
* for each NVMe controller found, giving our application a choice on * for each NVMe controller found, giving our application a choice on