freebsd-src/sbin/nvmecontrol/resv.c
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C

/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2019 Alexander Motin <mav@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/ioccom.h>
#include <err.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "nvmecontrol.h"
/* Tables for command line parsing */
static cmd_fn_t resv;
static cmd_fn_t resvacquire;
static cmd_fn_t resvregister;
static cmd_fn_t resvrelease;
static cmd_fn_t resvreport;
#define NONE 0xffffffffu
#define NONE64 0xffffffffffffffffull
#define OPT(l, s, t, opt, addr, desc) { l, s, t, &opt.addr, desc }
#define OPT_END { NULL, 0, arg_none, NULL, NULL }
static struct cmd resv_cmd = {
.name = "resv",
.fn = resv,
.descr = "Reservation commands",
.ctx_size = 0,
.opts = NULL,
.args = NULL,
};
CMD_COMMAND(resv_cmd);
static struct acquire_options {
uint64_t crkey;
uint64_t prkey;
uint8_t rtype;
uint8_t racqa;
const char *dev;
} acquire_opt = {
.crkey = 0,
.prkey = 0,
.rtype = 0,
.racqa = 0,
.dev = NULL,
};
static const struct opts acquire_opts[] = {
OPT("crkey", 'c', arg_uint64, acquire_opt, crkey,
"Current Reservation Key"),
OPT("prkey", 'p', arg_uint64, acquire_opt, prkey,
"Preempt Reservation Key"),
OPT("rtype", 't', arg_uint8, acquire_opt, rtype,
"Reservation Type"),
OPT("racqa", 'a', arg_uint8, acquire_opt, racqa,
"Acquire Action (0=acq, 1=pre, 2=pre+ab)"),
{ NULL, 0, arg_none, NULL, NULL }
};
static const struct args acquire_args[] = {
{ arg_string, &acquire_opt.dev, "namespace-id" },
{ arg_none, NULL, NULL },
};
static struct cmd acquire_cmd = {
.name = "acquire",
.fn = resvacquire,
.descr = "Acquire/preempt reservation",
.ctx_size = sizeof(acquire_opt),
.opts = acquire_opts,
.args = acquire_args,
};
CMD_SUBCOMMAND(resv_cmd, acquire_cmd);
static struct register_options {
uint64_t crkey;
uint64_t nrkey;
uint8_t rrega;
bool iekey;
uint8_t cptpl;
const char *dev;
} register_opt = {
.crkey = 0,
.nrkey = 0,
.rrega = 0,
.iekey = false,
.cptpl = 0,
.dev = NULL,
};
static const struct opts register_opts[] = {
OPT("crkey", 'c', arg_uint64, register_opt, crkey,
"Current Reservation Key"),
OPT("nrkey", 'k', arg_uint64, register_opt, nrkey,
"New Reservation Key"),
OPT("rrega", 'r', arg_uint8, register_opt, rrega,
"Register Action (0=reg, 1=unreg, 2=replace)"),
OPT("iekey", 'i', arg_none, register_opt, iekey,
"Ignore Existing Key"),
OPT("cptpl", 'p', arg_uint8, register_opt, cptpl,
"Change Persist Through Power Loss State"),
{ NULL, 0, arg_none, NULL, NULL }
};
static const struct args register_args[] = {
{ arg_string, &register_opt.dev, "namespace-id" },
{ arg_none, NULL, NULL },
};
static struct cmd register_cmd = {
.name = "register",
.fn = resvregister,
.descr = "Register/unregister reservation",
.ctx_size = sizeof(register_opt),
.opts = register_opts,
.args = register_args,
};
CMD_SUBCOMMAND(resv_cmd, register_cmd);
static struct release_options {
uint64_t crkey;
uint8_t rtype;
uint8_t rrela;
const char *dev;
} release_opt = {
.crkey = 0,
.rtype = 0,
.rrela = 0,
.dev = NULL,
};
static const struct opts release_opts[] = {
OPT("crkey", 'c', arg_uint64, release_opt, crkey,
"Current Reservation Key"),
OPT("rtype", 't', arg_uint8, release_opt, rtype,
"Reservation Type"),
OPT("rrela", 'a', arg_uint8, release_opt, rrela,
"Release Action (0=release, 1=clear)"),
{ NULL, 0, arg_none, NULL, NULL }
};
static const struct args release_args[] = {
{ arg_string, &release_opt.dev, "namespace-id" },
{ arg_none, NULL, NULL },
};
static struct cmd release_cmd = {
.name = "release",
.fn = resvrelease,
.descr = "Release/clear reservation",
.ctx_size = sizeof(release_opt),
.opts = release_opts,
.args = release_args,
};
CMD_SUBCOMMAND(resv_cmd, release_cmd);
static struct report_options {
bool hex;
bool verbose;
bool eds;
const char *dev;
} report_opt = {
.hex = false,
.verbose = false,
.eds = false,
.dev = NULL,
};
static const struct opts report_opts[] = {
OPT("hex", 'x', arg_none, report_opt, hex,
"Print reservation status in hex"),
OPT("verbose", 'v', arg_none, report_opt, verbose,
"More verbosity"),
OPT("eds", 'e', arg_none, report_opt, eds,
"Extended Data Structure"),
{ NULL, 0, arg_none, NULL, NULL }
};
static const struct args report_args[] = {
{ arg_string, &report_opt.dev, "namespace-id" },
{ arg_none, NULL, NULL },
};
static struct cmd report_cmd = {
.name = "report",
.fn = resvreport,
.descr = "Print reservation status",
.ctx_size = sizeof(report_opt),
.opts = report_opts,
.args = report_args,
};
CMD_SUBCOMMAND(resv_cmd, report_cmd);
/* handles NVME_OPC_RESERVATION_* NVM commands */
static void
resvacquire(const struct cmd *f, int argc, char *argv[])
{
struct nvme_pt_command pt;
uint64_t data[2];
int fd;
uint32_t nsid;
if (arg_parse(argc, argv, f))
return;
open_dev(acquire_opt.dev, &fd, 0, 1);
get_nsid(fd, NULL, &nsid);
if (nsid == 0) {
fprintf(stderr, "This command require namespace-id\n");
arg_help(argc, argv, f);
}
data[0] = htole64(acquire_opt.crkey);
data[1] = htole64(acquire_opt.prkey);
memset(&pt, 0, sizeof(pt));
pt.cmd.opc = NVME_OPC_RESERVATION_ACQUIRE;
pt.cmd.cdw10 = htole32((acquire_opt.racqa & 7) |
(acquire_opt.rtype << 8));
pt.buf = &data;
pt.len = sizeof(data);
pt.is_read = 0;
if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0)
err(EX_IOERR, "acquire request failed");
if (nvme_completion_is_error(&pt.cpl))
errx(EX_IOERR, "acquire request returned error");
close(fd);
exit(0);
}
static void
resvregister(const struct cmd *f, int argc, char *argv[])
{
struct nvme_pt_command pt;
uint64_t data[2];
int fd;
uint32_t nsid;
if (arg_parse(argc, argv, f))
return;
open_dev(register_opt.dev, &fd, 0, 1);
get_nsid(fd, NULL, &nsid);
if (nsid == 0) {
fprintf(stderr, "This command require namespace-id\n");
arg_help(argc, argv, f);
}
data[0] = htole64(register_opt.crkey);
data[1] = htole64(register_opt.nrkey);
memset(&pt, 0, sizeof(pt));
pt.cmd.opc = NVME_OPC_RESERVATION_REGISTER;
pt.cmd.cdw10 = htole32((register_opt.rrega & 7) |
(register_opt.iekey << 3) | (register_opt.cptpl << 30));
pt.buf = &data;
pt.len = sizeof(data);
pt.is_read = 0;
if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0)
err(EX_IOERR, "register request failed");
if (nvme_completion_is_error(&pt.cpl))
errx(EX_IOERR, "register request returned error");
close(fd);
exit(0);
}
static void
resvrelease(const struct cmd *f, int argc, char *argv[])
{
struct nvme_pt_command pt;
uint64_t data[1];
int fd;
uint32_t nsid;
if (arg_parse(argc, argv, f))
return;
open_dev(release_opt.dev, &fd, 0, 1);
get_nsid(fd, NULL, &nsid);
if (nsid == 0) {
fprintf(stderr, "This command require namespace-id\n");
arg_help(argc, argv, f);
}
data[0] = htole64(release_opt.crkey);
memset(&pt, 0, sizeof(pt));
pt.cmd.opc = NVME_OPC_RESERVATION_RELEASE;
pt.cmd.cdw10 = htole32((release_opt.rrela & 7) |
(release_opt.rtype << 8));
pt.buf = &data;
pt.len = sizeof(data);
pt.is_read = 0;
if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0)
err(EX_IOERR, "release request failed");
if (nvme_completion_is_error(&pt.cpl))
errx(EX_IOERR, "release request returned error");
close(fd);
exit(0);
}
static void
resvreport(const struct cmd *f, int argc, char *argv[])
{
struct nvme_pt_command pt;
struct nvme_resv_status *s;
struct nvme_resv_status_ext *e;
uint8_t data[4096] __aligned(4);
int fd;
u_int i, n;
uint32_t nsid;
if (arg_parse(argc, argv, f))
return;
open_dev(report_opt.dev, &fd, 0, 1);
get_nsid(fd, NULL, &nsid);
if (nsid == 0) {
fprintf(stderr, "This command require namespace-id\n");
arg_help(argc, argv, f);
}
bzero(data, sizeof(data));
memset(&pt, 0, sizeof(pt));
pt.cmd.opc = NVME_OPC_RESERVATION_REPORT;
pt.cmd.cdw10 = htole32(sizeof(data) / 4 - 1);
pt.cmd.cdw11 = htole32(report_opt.eds); /* EDS */
pt.buf = &data;
pt.len = sizeof(data);
pt.is_read = 1;
if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0)
err(EX_IOERR, "report request failed");
if (nvme_completion_is_error(&pt.cpl))
errx(EX_IOERR, "report request returned error");
close(fd);
if (report_opt.eds)
nvme_resv_status_ext_swapbytes((void *)data, sizeof(data));
else
nvme_resv_status_swapbytes((void *)data, sizeof(data));
if (report_opt.hex) {
i = sizeof(data);
if (!report_opt.verbose) {
for (; i > 64; i--) {
if (data[i - 1] != 0)
break;
}
}
print_hex(&data, i);
exit(0);
}
s = (struct nvme_resv_status *)data;
n = (s->regctl[1] << 8) | s->regctl[0];
printf("Generation: %u\n", s->gen);
printf("Reservation Type: %u\n", s->rtype);
printf("Number of Registered Controllers: %u\n", n);
printf("Persist Through Power Loss State: %u\n", s->ptpls);
if (report_opt.eds) {
e = (struct nvme_resv_status_ext *)data;
n = MIN(n, (sizeof(data) - sizeof(e)) / sizeof(e->ctrlr[0]));
for (i = 0; i < n; i++) {
printf("Controller ID: 0x%04x\n",
e->ctrlr[i].ctrlr_id);
printf(" Reservation Status: %u\n",
e->ctrlr[i].rcsts);
printf(" Reservation Key: 0x%08jx\n",
e->ctrlr[i].rkey);
printf(" Host Identifier: 0x%08jx%08jx\n",
e->ctrlr[i].hostid[0], e->ctrlr[i].hostid[1]);
}
} else {
n = MIN(n, (sizeof(data) - sizeof(s)) / sizeof(s->ctrlr[0]));
for (i = 0; i < n; i++) {
printf("Controller ID: 0x%04x\n",
s->ctrlr[i].ctrlr_id);
printf(" Reservation Status: %u\n",
s->ctrlr[i].rcsts);
printf(" Host Identifier: 0x%08jx\n",
s->ctrlr[i].hostid);
printf(" Reservation Key: 0x%08jx\n",
s->ctrlr[i].rkey);
}
}
exit(0);
}
static void
resv(const struct cmd *nf __unused, int argc, char *argv[])
{
cmd_dispatch(argc, argv, &resv_cmd);
}