diff options
Diffstat (limited to 'src/spdk/examples/nvme/reserve/reserve.c')
| -rw-r--r-- | src/spdk/examples/nvme/reserve/reserve.c | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/src/spdk/examples/nvme/reserve/reserve.c b/src/spdk/examples/nvme/reserve/reserve.c new file mode 100644 index 00000000..4e0d54e2 --- /dev/null +++ b/src/spdk/examples/nvme/reserve/reserve.c @@ -0,0 +1,394 @@ +/*- + * BSD LICENSE + * + * Copyright (c) Intel Corporation. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * 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. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 COPYRIGHT + * OWNER OR CONTRIBUTORS 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 "spdk/stdinc.h" + +#include "spdk/endian.h" +#include "spdk/nvme.h" +#include "spdk/env.h" +#include "spdk/log.h" + +#define MAX_DEVS 64 + +struct dev { + struct spdk_pci_addr pci_addr; + struct spdk_nvme_ctrlr *ctrlr; + char name[100]; +}; + +static struct dev devs[MAX_DEVS]; +static int num_devs = 0; + +#define foreach_dev(iter) \ + for (iter = devs; iter - devs < num_devs; iter++) + +static int outstanding_commands; +static int reserve_command_result; +static bool get_host_id_successful; + +#define HOST_ID 0xABABABABCDCDCDCD +#define EXT_HOST_ID ((uint8_t[]){0x0f, 0x97, 0xcd, 0x74, 0x8c, 0x80, 0x41, 0x42, \ + 0x99, 0x0f, 0x65, 0xc4, 0xf0, 0x39, 0x24, 0x20}) + +#define CR_KEY 0xDEADBEAF5A5A5A5B + +static void +get_feature_completion(void *cb_arg, const struct spdk_nvme_cpl *cpl) +{ + if (spdk_nvme_cpl_is_error(cpl)) { + fprintf(stdout, "Get Features - Host Identifier failed\n"); + get_host_id_successful = false; + } else { + get_host_id_successful = true; + } + outstanding_commands--; +} + +static int +get_host_identifier(struct spdk_nvme_ctrlr *ctrlr) +{ + int ret; + uint8_t host_id[16]; + uint32_t host_id_size; + uint32_t cdw11; + + if (spdk_nvme_ctrlr_get_data(ctrlr)->ctratt.host_id_exhid_supported) { + host_id_size = 16; + cdw11 = 1; + printf("Using 128-bit extended host identifier\n"); + } else { + host_id_size = 8; + cdw11 = 0; + printf("Using 64-bit host identifier\n"); + } + + outstanding_commands = 0; + ret = spdk_nvme_ctrlr_cmd_get_feature(ctrlr, SPDK_NVME_FEAT_HOST_IDENTIFIER, cdw11, host_id, + host_id_size, + get_feature_completion, NULL); + if (ret) { + fprintf(stdout, "Get Feature: Failed\n"); + return -1; + } + + outstanding_commands++; + get_host_id_successful = false; + + while (outstanding_commands) { + spdk_nvme_ctrlr_process_admin_completions(ctrlr); + } + + if (get_host_id_successful) { + spdk_trace_dump(stdout, "Get Feature: Host Identifier:", host_id, host_id_size); + } + + return 0; +} + +static void +reservation_ns_completion(void *cb_arg, const struct spdk_nvme_cpl *cpl) +{ + if (spdk_nvme_cpl_is_error(cpl)) { + reserve_command_result = -1; + } else { + reserve_command_result = 0; + } + + outstanding_commands--; +} + +static int +reservation_ns_register(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair, + uint32_t ns_id) +{ + int ret; + struct spdk_nvme_reservation_register_data rr_data; + struct spdk_nvme_ns *ns; + + ns = spdk_nvme_ctrlr_get_ns(ctrlr, ns_id); + + rr_data.crkey = CR_KEY; + rr_data.nrkey = CR_KEY; + + outstanding_commands = 0; + reserve_command_result = -1; + + ret = spdk_nvme_ns_cmd_reservation_register(ns, qpair, &rr_data, true, + SPDK_NVME_RESERVE_REGISTER_KEY, + SPDK_NVME_RESERVE_PTPL_NO_CHANGES, + reservation_ns_completion, NULL); + if (ret) { + fprintf(stderr, "Reservation Register Failed\n"); + return -1; + } + + outstanding_commands++; + while (outstanding_commands) { + spdk_nvme_qpair_process_completions(qpair, 100); + } + + if (reserve_command_result) { + fprintf(stderr, "Reservation Register Failed\n"); + } + + return 0; +} + +static int +reservation_ns_report(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair, uint32_t ns_id) +{ + int ret, i; + uint8_t *payload; + struct spdk_nvme_reservation_status_data *status; + struct spdk_nvme_reservation_ctrlr_data *cdata; + struct spdk_nvme_ns *ns; + + ns = spdk_nvme_ctrlr_get_ns(ctrlr, ns_id); + + outstanding_commands = 0; + reserve_command_result = -1; + + payload = spdk_dma_zmalloc(0x1000, 0x1000, NULL); + if (!payload) { + fprintf(stderr, "DMA Buffer Allocation Failed\n"); + return -1; + } + + ret = spdk_nvme_ns_cmd_reservation_report(ns, qpair, payload, 0x1000, + reservation_ns_completion, NULL); + if (ret) { + fprintf(stderr, "Reservation Report Failed\n"); + spdk_dma_free(payload); + return -1; + } + + outstanding_commands++; + while (outstanding_commands) { + spdk_nvme_qpair_process_completions(qpair, 100); + } + + if (reserve_command_result) { + fprintf(stderr, "Reservation Report Failed\n"); + spdk_dma_free(payload); + return 0; + } + + status = (struct spdk_nvme_reservation_status_data *)payload; + fprintf(stdout, "Reservation Generation Counter %u\n", status->generation); + fprintf(stdout, "Reservation type %u\n", status->type); + fprintf(stdout, "Reservation Number of Registered Controllers %u\n", status->nr_regctl); + fprintf(stdout, "Reservation Persist Through Power Loss State %u\n", status->ptpl_state); + for (i = 0; i < status->nr_regctl; i++) { + cdata = (struct spdk_nvme_reservation_ctrlr_data *)(payload + sizeof(struct + spdk_nvme_reservation_status_data) * (i + 1)); + fprintf(stdout, "Controller ID %u\n", cdata->ctrlr_id); + fprintf(stdout, "Controller Reservation Status %u\n", cdata->rcsts.status); + fprintf(stdout, "Controller Host ID 0x%"PRIx64"\n", cdata->host_id); + fprintf(stdout, "Controller Reservation Key 0x%"PRIx64"\n", cdata->key); + } + + spdk_dma_free(payload); + return 0; +} + +static int +reservation_ns_acquire(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair, uint32_t ns_id) +{ + int ret; + struct spdk_nvme_reservation_acquire_data cdata; + struct spdk_nvme_ns *ns; + + ns = spdk_nvme_ctrlr_get_ns(ctrlr, ns_id); + cdata.crkey = CR_KEY; + cdata.prkey = 0; + + outstanding_commands = 0; + reserve_command_result = -1; + + ret = spdk_nvme_ns_cmd_reservation_acquire(ns, qpair, &cdata, + false, + SPDK_NVME_RESERVE_ACQUIRE, + SPDK_NVME_RESERVE_WRITE_EXCLUSIVE, + reservation_ns_completion, NULL); + if (ret) { + fprintf(stderr, "Reservation Acquire Failed\n"); + return -1; + } + + outstanding_commands++; + while (outstanding_commands) { + spdk_nvme_qpair_process_completions(qpair, 100); + } + + if (reserve_command_result) { + fprintf(stderr, "Reservation Acquire Failed\n"); + } + + return 0; +} + +static int +reservation_ns_release(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair, uint32_t ns_id) +{ + int ret; + struct spdk_nvme_reservation_key_data cdata; + struct spdk_nvme_ns *ns; + + ns = spdk_nvme_ctrlr_get_ns(ctrlr, ns_id); + cdata.crkey = CR_KEY; + + outstanding_commands = 0; + reserve_command_result = -1; + + ret = spdk_nvme_ns_cmd_reservation_release(ns, qpair, &cdata, + false, + SPDK_NVME_RESERVE_RELEASE, + SPDK_NVME_RESERVE_WRITE_EXCLUSIVE, + reservation_ns_completion, NULL); + if (ret) { + fprintf(stderr, "Reservation Release Failed\n"); + return -1; + } + + outstanding_commands++; + while (outstanding_commands) { + spdk_nvme_qpair_process_completions(qpair, 100); + } + + if (reserve_command_result) { + fprintf(stderr, "Reservation Release Failed\n"); + } + + return 0; +} + +static void +reserve_controller(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_qpair *qpair, + const struct spdk_pci_addr *pci_addr) +{ + const struct spdk_nvme_ctrlr_data *cdata; + + cdata = spdk_nvme_ctrlr_get_data(ctrlr); + + printf("=====================================================\n"); + printf("NVMe Controller at PCI bus %d, device %d, function %d\n", + pci_addr->bus, pci_addr->dev, pci_addr->func); + printf("=====================================================\n"); + + printf("Reservations: %s\n", + cdata->oncs.reservations ? "Supported" : "Not Supported"); + + if (!cdata->oncs.reservations) { + return; + } + + get_host_identifier(ctrlr); + + /* tested 1 namespace */ + reservation_ns_register(ctrlr, qpair, 1); + reservation_ns_acquire(ctrlr, qpair, 1); + reservation_ns_report(ctrlr, qpair, 1); + reservation_ns_release(ctrlr, qpair, 1); +} + +static bool +probe_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid, + struct spdk_nvme_ctrlr_opts *opts) +{ + /* + * Provide both 64-bit and 128-bit host identifiers. + * + * The NVMe library will choose which one to use based on whether the controller + * supports extended host identifiers. + */ + to_le64(opts->host_id, HOST_ID); + memcpy(opts->extended_host_id, EXT_HOST_ID, sizeof(opts->extended_host_id)); + + return true; +} + +static void +attach_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid, + struct spdk_nvme_ctrlr *ctrlr, const struct spdk_nvme_ctrlr_opts *opts) +{ + struct dev *dev; + + /* add to dev list */ + dev = &devs[num_devs++]; + spdk_pci_addr_parse(&dev->pci_addr, trid->traddr); + dev->ctrlr = ctrlr; +} + +int main(int argc, char **argv) +{ + struct dev *iter; + int rc, i; + struct spdk_env_opts opts; + + spdk_env_opts_init(&opts); + opts.name = "reserve"; + opts.core_mask = "0x1"; + opts.shm_id = 0; + if (spdk_env_init(&opts) < 0) { + fprintf(stderr, "Unable to initialize SPDK env\n"); + return 1; + } + + if (spdk_nvme_probe(NULL, NULL, probe_cb, attach_cb, NULL) != 0) { + fprintf(stderr, "spdk_nvme_probe() failed\n"); + return 1; + } + + rc = 0; + + foreach_dev(iter) { + struct spdk_nvme_qpair *qpair; + + qpair = spdk_nvme_ctrlr_alloc_io_qpair(iter->ctrlr, NULL, 0); + if (!qpair) { + fprintf(stderr, "spdk_nvme_ctrlr_alloc_io_qpair() failed\n"); + rc = 1; + } else { + reserve_controller(iter->ctrlr, qpair, &iter->pci_addr); + } + } + + printf("Cleaning up...\n"); + + for (i = 0; i < num_devs; i++) { + struct dev *dev = &devs[i]; + spdk_nvme_detach(dev->ctrlr); + } + + return rc; +} |