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// SPDX-License-Identifier: LGPL-2.1-or-later
/**
* This file is part of libnvme.
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
*
* Authors: Keith Busch <keith.busch@wdc.com>
*/
/**
* Search out for ZNS type namespaces, and if found, report their properties.
*/
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdlib.h>
#include <libnvme.h>
#include <inttypes.h>
#include <ccan/endian/endian.h>
static void show_zns_properties(nvme_ns_t n)
{
struct nvme_zns_id_ns zns_ns;
struct nvme_zns_id_ctrl zns_ctrl;
struct nvme_zone_report *zr;
__u32 result;
zr = calloc(1, 0x1000);
if (!zr)
return;
if (nvme_zns_identify_ns(nvme_ns_get_fd(n), nvme_ns_get_nsid(n),
&zns_ns)) {
fprintf(stderr, "failed to identify zns ns\n");;
}
printf("zoc:%x ozcs:%x mar:%x mor:%x\n", le16_to_cpu(zns_ns.zoc),
le16_to_cpu(zns_ns.ozcs), le32_to_cpu(zns_ns.mar),
le32_to_cpu(zns_ns.mor));
if (nvme_zns_identify_ctrl(nvme_ns_get_fd(n), &zns_ctrl)) {
fprintf(stderr, "failed to identify zns ctrl\n");;
free(zr);
return;
}
printf("zasl:%u\n", zns_ctrl.zasl);
if (nvme_zns_report_zones(nvme_ns_get_fd(n), nvme_ns_get_nsid(n), 0,
NVME_ZNS_ZRAS_REPORT_ALL, false,
true, 0x1000, (void *)zr,
NVME_DEFAULT_IOCTL_TIMEOUT, &result)) {
fprintf(stderr, "failed to report zones, result %x\n",
le32_to_cpu(result));
free(zr);
return;
}
printf("nr_zones:%"PRIu64"\n", le64_to_cpu(zr->nr_zones));
free(zr);
}
int main()
{
nvme_subsystem_t s;
nvme_root_t r;
nvme_host_t h;
nvme_ctrl_t c;
nvme_ns_t n;
r = nvme_scan(NULL);
if (!r)
return -1;
nvme_for_each_host(r, h) {
nvme_for_each_subsystem(h, s) {
nvme_subsystem_for_each_ctrl(s, c) {
nvme_ctrl_for_each_ns(c, n) {
if (nvme_ns_get_csi(n) == NVME_CSI_ZNS)
show_zns_properties(n);
}
}
nvme_subsystem_for_each_ns(s, n) {
if (nvme_ns_get_csi(n) == NVME_CSI_ZNS)
show_zns_properties(n);
}
}
}
nvme_free_tree(r);
}
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