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