+++ /dev/null
-/*-
- * 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/env.h"
-#include "spdk/log.h"
-#include "spdk/rpc.h"
-#include "spdk/string.h"
-#include "spdk/util.h"
-#include "spdk/histogram_data.h"
-#include "spdk/base64.h"
-
-#include "spdk/bdev_module.h"
-
-struct rpc_get_bdevs_iostat_ctx {
- int bdev_count;
- struct spdk_jsonrpc_request *request;
- struct spdk_json_write_ctx *w;
-};
-
-static void
-spdk_rpc_get_bdevs_iostat_cb(struct spdk_bdev *bdev,
- struct spdk_bdev_io_stat *stat, void *cb_arg, int rc)
-{
- struct rpc_get_bdevs_iostat_ctx *ctx = cb_arg;
- struct spdk_json_write_ctx *w = ctx->w;
- const char *bdev_name;
-
- if (rc != 0) {
- goto done;
- }
-
- bdev_name = spdk_bdev_get_name(bdev);
- if (bdev_name != NULL) {
- spdk_json_write_object_begin(w);
-
- spdk_json_write_named_string(w, "name", bdev_name);
-
- spdk_json_write_named_uint64(w, "bytes_read", stat->bytes_read);
-
- spdk_json_write_named_uint64(w, "num_read_ops", stat->num_read_ops);
-
- spdk_json_write_named_uint64(w, "bytes_written", stat->bytes_written);
-
- spdk_json_write_named_uint64(w, "num_write_ops", stat->num_write_ops);
-
- spdk_json_write_named_uint64(w, "bytes_unmapped", stat->bytes_unmapped);
-
- spdk_json_write_named_uint64(w, "num_unmap_ops", stat->num_unmap_ops);
-
- spdk_json_write_named_uint64(w, "read_latency_ticks", stat->read_latency_ticks);
-
- spdk_json_write_named_uint64(w, "write_latency_ticks", stat->write_latency_ticks);
-
- spdk_json_write_named_uint64(w, "unmap_latency_ticks", stat->unmap_latency_ticks);
-
- if (spdk_bdev_get_qd_sampling_period(bdev)) {
- spdk_json_write_named_uint64(w, "queue_depth_polling_period",
- spdk_bdev_get_qd_sampling_period(bdev));
-
- spdk_json_write_named_uint64(w, "queue_depth", spdk_bdev_get_qd(bdev));
-
- spdk_json_write_named_uint64(w, "io_time", spdk_bdev_get_io_time(bdev));
-
- spdk_json_write_named_uint64(w, "weighted_io_time",
- spdk_bdev_get_weighted_io_time(bdev));
- }
-
- spdk_json_write_object_end(w);
- }
-
-done:
- free(stat);
- if (--ctx->bdev_count == 0) {
- spdk_json_write_array_end(ctx->w);
- spdk_json_write_object_end(w);
- spdk_jsonrpc_end_result(ctx->request, ctx->w);
- free(ctx);
- }
-}
-
-struct rpc_get_bdevs_iostat {
- char *name;
-};
-
-static void
-free_rpc_get_bdevs_iostat(struct rpc_get_bdevs_iostat *r)
-{
- free(r->name);
-}
-
-static const struct spdk_json_object_decoder rpc_get_bdevs_iostat_decoders[] = {
- {"name", offsetof(struct rpc_get_bdevs_iostat, name), spdk_json_decode_string, true},
-};
-
-static void
-spdk_rpc_get_bdevs_iostat(struct spdk_jsonrpc_request *request,
- const struct spdk_json_val *params)
-{
- struct rpc_get_bdevs_iostat req = {};
- struct spdk_bdev *bdev = NULL;
- struct spdk_json_write_ctx *w;
- struct spdk_bdev_io_stat *stat;
- struct rpc_get_bdevs_iostat_ctx *ctx;
-
- if (params != NULL) {
- if (spdk_json_decode_object(params, rpc_get_bdevs_iostat_decoders,
- SPDK_COUNTOF(rpc_get_bdevs_iostat_decoders),
- &req)) {
- SPDK_ERRLOG("spdk_json_decode_object failed\n");
- goto invalid;
- }
-
- if (req.name) {
- bdev = spdk_bdev_get_by_name(req.name);
- if (bdev == NULL) {
- SPDK_ERRLOG("bdev '%s' does not exist\n", req.name);
- goto invalid;
- }
- }
- }
-
- free_rpc_get_bdevs_iostat(&req);
-
- ctx = calloc(1, sizeof(struct rpc_get_bdevs_iostat_ctx));
- if (ctx == NULL) {
- SPDK_ERRLOG("Failed to allocate rpc_get_bdevs_iostat_ctx struct\n");
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, "No memory left");
- return;
- }
-
- w = spdk_jsonrpc_begin_result(request);
- if (w == NULL) {
- free(ctx);
- return;
- }
-
- /*
- * Increment initial bdev_count so that it will never reach 0 in the middle
- * of iterating.
- */
- ctx->bdev_count++;
- ctx->request = request;
- ctx->w = w;
-
-
- spdk_json_write_object_begin(w);
- spdk_json_write_named_uint64(w, "tick_rate", spdk_get_ticks_hz());
-
- spdk_json_write_named_array_begin(w, "bdevs");
-
- if (bdev != NULL) {
- stat = calloc(1, sizeof(struct spdk_bdev_io_stat));
- if (stat == NULL) {
- SPDK_ERRLOG("Failed to allocate rpc_get_bdevs_iostat_ctx struct\n");
- } else {
- ctx->bdev_count++;
- spdk_bdev_get_device_stat(bdev, stat, spdk_rpc_get_bdevs_iostat_cb, ctx);
- }
- } else {
- for (bdev = spdk_bdev_first(); bdev != NULL; bdev = spdk_bdev_next(bdev)) {
- stat = calloc(1, sizeof(struct spdk_bdev_io_stat));
- if (stat == NULL) {
- SPDK_ERRLOG("Failed to allocate spdk_bdev_io_stat struct\n");
- break;
- }
- ctx->bdev_count++;
- spdk_bdev_get_device_stat(bdev, stat, spdk_rpc_get_bdevs_iostat_cb, ctx);
- }
- }
-
- if (--ctx->bdev_count == 0) {
- spdk_json_write_array_end(w);
- spdk_json_write_object_end(w);
- spdk_jsonrpc_end_result(request, w);
- free(ctx);
- }
-
- return;
-
-invalid:
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");
-
- free_rpc_get_bdevs_iostat(&req);
-}
-SPDK_RPC_REGISTER("get_bdevs_iostat", spdk_rpc_get_bdevs_iostat, SPDK_RPC_RUNTIME)
-
-static void
-spdk_rpc_dump_bdev_info(struct spdk_json_write_ctx *w,
- struct spdk_bdev *bdev)
-{
- struct spdk_bdev_alias *tmp;
- uint64_t qos_limits[SPDK_BDEV_QOS_NUM_RATE_LIMIT_TYPES];
- int i;
-
- spdk_json_write_object_begin(w);
-
- spdk_json_write_named_string(w, "name", spdk_bdev_get_name(bdev));
-
- spdk_json_write_named_array_begin(w, "aliases");
-
- TAILQ_FOREACH(tmp, spdk_bdev_get_aliases(bdev), tailq) {
- spdk_json_write_string(w, tmp->alias);
- }
-
- spdk_json_write_array_end(w);
-
- spdk_json_write_named_string(w, "product_name", spdk_bdev_get_product_name(bdev));
-
- spdk_json_write_named_uint32(w, "block_size", spdk_bdev_get_block_size(bdev));
-
- spdk_json_write_named_uint64(w, "num_blocks", spdk_bdev_get_num_blocks(bdev));
-
- if (!spdk_mem_all_zero(&bdev->uuid, sizeof(bdev->uuid))) {
- char uuid_str[SPDK_UUID_STRING_LEN];
-
- spdk_uuid_fmt_lower(uuid_str, sizeof(uuid_str), &bdev->uuid);
- spdk_json_write_named_string(w, "uuid", uuid_str);
- }
-
- if (spdk_bdev_get_md_size(bdev) != 0) {
- spdk_json_write_named_uint32(w, "md_size", spdk_bdev_get_md_size(bdev));
- spdk_json_write_named_bool(w, "md_interleave", spdk_bdev_is_md_interleaved(bdev));
- spdk_json_write_named_uint32(w, "dif_type", spdk_bdev_get_dif_type(bdev));
- if (spdk_bdev_get_dif_type(bdev) != SPDK_DIF_DISABLE) {
- spdk_json_write_named_bool(w, "dif_is_head_of_md", spdk_bdev_is_dif_head_of_md(bdev));
- spdk_json_write_named_object_begin(w, "enabled_dif_check_types");
- spdk_json_write_named_bool(w, "reftag",
- spdk_bdev_is_dif_check_enabled(bdev, SPDK_DIF_CHECK_TYPE_REFTAG));
- spdk_json_write_named_bool(w, "apptag",
- spdk_bdev_is_dif_check_enabled(bdev, SPDK_DIF_CHECK_TYPE_APPTAG));
- spdk_json_write_named_bool(w, "guard",
- spdk_bdev_is_dif_check_enabled(bdev, SPDK_DIF_CHECK_TYPE_GUARD));
- spdk_json_write_object_end(w);
- }
- }
-
- spdk_json_write_named_object_begin(w, "assigned_rate_limits");
- spdk_bdev_get_qos_rate_limits(bdev, qos_limits);
- for (i = 0; i < SPDK_BDEV_QOS_NUM_RATE_LIMIT_TYPES; i++) {
- spdk_json_write_named_uint64(w, spdk_bdev_get_qos_rpc_type(i), qos_limits[i]);
- }
- spdk_json_write_object_end(w);
-
- spdk_json_write_named_bool(w, "claimed", (bdev->internal.claim_module != NULL));
-
- spdk_json_write_named_object_begin(w, "supported_io_types");
- spdk_json_write_named_bool(w, "read",
- spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_READ));
- spdk_json_write_named_bool(w, "write",
- spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_WRITE));
- spdk_json_write_named_bool(w, "unmap",
- spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_UNMAP));
- spdk_json_write_named_bool(w, "write_zeroes",
- spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_WRITE_ZEROES));
- spdk_json_write_named_bool(w, "flush",
- spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_FLUSH));
- spdk_json_write_named_bool(w, "reset",
- spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_RESET));
- spdk_json_write_named_bool(w, "nvme_admin",
- spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_NVME_ADMIN));
- spdk_json_write_named_bool(w, "nvme_io",
- spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_NVME_IO));
- spdk_json_write_object_end(w);
-
- spdk_json_write_named_object_begin(w, "driver_specific");
- spdk_bdev_dump_info_json(bdev, w);
- spdk_json_write_object_end(w);
-
- spdk_json_write_object_end(w);
-}
-
-struct rpc_get_bdevs {
- char *name;
-};
-
-static void
-free_rpc_get_bdevs(struct rpc_get_bdevs *r)
-{
- free(r->name);
-}
-
-static const struct spdk_json_object_decoder rpc_get_bdevs_decoders[] = {
- {"name", offsetof(struct rpc_get_bdevs, name), spdk_json_decode_string, true},
-};
-
-static void
-spdk_rpc_get_bdevs(struct spdk_jsonrpc_request *request,
- const struct spdk_json_val *params)
-{
- struct rpc_get_bdevs req = {};
- struct spdk_json_write_ctx *w;
- struct spdk_bdev *bdev = NULL;
-
- if (params && spdk_json_decode_object(params, rpc_get_bdevs_decoders,
- SPDK_COUNTOF(rpc_get_bdevs_decoders),
- &req)) {
- SPDK_ERRLOG("spdk_json_decode_object failed\n");
- goto invalid;
- }
-
- if (req.name) {
- bdev = spdk_bdev_get_by_name(req.name);
- if (bdev == NULL) {
- SPDK_ERRLOG("bdev '%s' does not exist\n", req.name);
- goto invalid;
- }
- }
-
- free_rpc_get_bdevs(&req);
- w = spdk_jsonrpc_begin_result(request);
- if (w == NULL) {
- return;
- }
-
- spdk_json_write_array_begin(w);
-
- if (bdev != NULL) {
- spdk_rpc_dump_bdev_info(w, bdev);
- } else {
- for (bdev = spdk_bdev_first(); bdev != NULL; bdev = spdk_bdev_next(bdev)) {
- spdk_rpc_dump_bdev_info(w, bdev);
- }
- }
-
- spdk_json_write_array_end(w);
-
- spdk_jsonrpc_end_result(request, w);
-
- return;
-
-invalid:
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");
-
- free_rpc_get_bdevs(&req);
-}
-SPDK_RPC_REGISTER("get_bdevs", spdk_rpc_get_bdevs, SPDK_RPC_RUNTIME)
-
-struct rpc_set_bdev_qd_sampling_period {
- char *name;
- uint64_t period;
-};
-
-static void
-free_rpc_set_bdev_qd_sampling_period(struct rpc_set_bdev_qd_sampling_period *r)
-{
- free(r->name);
-}
-
-static const struct spdk_json_object_decoder
- rpc_set_bdev_qd_sampling_period_decoders[] = {
- {"name", offsetof(struct rpc_set_bdev_qd_sampling_period, name), spdk_json_decode_string},
- {"period", offsetof(struct rpc_set_bdev_qd_sampling_period, period), spdk_json_decode_uint64},
-};
-
-static void
-spdk_rpc_set_bdev_qd_sampling_period(struct spdk_jsonrpc_request *request,
- const struct spdk_json_val *params)
-{
- struct rpc_set_bdev_qd_sampling_period req = {0};
- struct spdk_bdev *bdev;
- struct spdk_json_write_ctx *w;
-
- req.period = UINT64_MAX;
-
- if (spdk_json_decode_object(params, rpc_set_bdev_qd_sampling_period_decoders,
- SPDK_COUNTOF(rpc_set_bdev_qd_sampling_period_decoders),
- &req)) {
- SPDK_ERRLOG("spdk_json_decode_object failed\n");
- goto invalid;
- }
-
- if (req.name) {
- bdev = spdk_bdev_get_by_name(req.name);
- if (bdev == NULL) {
- SPDK_ERRLOG("bdev '%s' does not exist\n", req.name);
- goto invalid;
- }
- } else {
- SPDK_ERRLOG("Missing name param\n");
- goto invalid;
- }
-
- if (req.period == UINT64_MAX) {
- SPDK_ERRLOG("Missing period param");
- }
-
- w = spdk_jsonrpc_begin_result(request);
- spdk_bdev_set_qd_sampling_period(bdev, req.period);
-
- spdk_json_write_bool(w, true);
- spdk_jsonrpc_end_result(request, w);
- free_rpc_set_bdev_qd_sampling_period(&req);
- return;
-
-invalid:
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");
- free_rpc_set_bdev_qd_sampling_period(&req);
- return;
-}
-SPDK_RPC_REGISTER("set_bdev_qd_sampling_period",
- spdk_rpc_set_bdev_qd_sampling_period,
- SPDK_RPC_RUNTIME)
-
-struct rpc_set_bdev_qos_limit {
- char *name;
- uint64_t limits[SPDK_BDEV_QOS_NUM_RATE_LIMIT_TYPES];
-};
-
-static void
-free_rpc_set_bdev_qos_limit(struct rpc_set_bdev_qos_limit *r)
-{
- free(r->name);
-}
-
-static const struct spdk_json_object_decoder rpc_set_bdev_qos_limit_decoders[] = {
- {"name", offsetof(struct rpc_set_bdev_qos_limit, name), spdk_json_decode_string},
- {
- "rw_ios_per_sec", offsetof(struct rpc_set_bdev_qos_limit,
- limits[SPDK_BDEV_QOS_RW_IOPS_RATE_LIMIT]),
- spdk_json_decode_uint64, true
- },
- {
- "rw_mbytes_per_sec", offsetof(struct rpc_set_bdev_qos_limit,
- limits[SPDK_BDEV_QOS_RW_BPS_RATE_LIMIT]),
- spdk_json_decode_uint64, true
- },
- {
- "r_mbytes_per_sec", offsetof(struct rpc_set_bdev_qos_limit,
- limits[SPDK_BDEV_QOS_R_BPS_RATE_LIMIT]),
- spdk_json_decode_uint64, true
- },
- {
- "w_mbytes_per_sec", offsetof(struct rpc_set_bdev_qos_limit,
- limits[SPDK_BDEV_QOS_W_BPS_RATE_LIMIT]),
- spdk_json_decode_uint64, true
- },
-};
-
-static void
-spdk_rpc_set_bdev_qos_limit_complete(void *cb_arg, int status)
-{
- struct spdk_jsonrpc_request *request = cb_arg;
- struct spdk_json_write_ctx *w;
-
- if (status != 0) {
- spdk_jsonrpc_send_error_response_fmt(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
- "Failed to configure rate limit: %s",
- spdk_strerror(-status));
- return;
- }
-
- w = spdk_jsonrpc_begin_result(request);
- if (w == NULL) {
- return;
- }
-
- spdk_json_write_bool(w, true);
- spdk_jsonrpc_end_result(request, w);
-}
-
-static void
-spdk_rpc_set_bdev_qos_limit(struct spdk_jsonrpc_request *request,
- const struct spdk_json_val *params)
-{
- struct rpc_set_bdev_qos_limit req = {NULL, {UINT64_MAX, UINT64_MAX, UINT64_MAX, UINT64_MAX}};
- struct spdk_bdev *bdev;
- int i;
-
- if (spdk_json_decode_object(params, rpc_set_bdev_qos_limit_decoders,
- SPDK_COUNTOF(rpc_set_bdev_qos_limit_decoders),
- &req)) {
- SPDK_ERRLOG("spdk_json_decode_object failed\n");
- goto invalid;
- }
-
- bdev = spdk_bdev_get_by_name(req.name);
- if (bdev == NULL) {
- SPDK_ERRLOG("bdev '%s' does not exist\n", req.name);
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
- "Bdev does not exist");
- goto exit;
- }
-
- for (i = 0; i < SPDK_BDEV_QOS_NUM_RATE_LIMIT_TYPES; i++) {
- if (req.limits[i] != UINT64_MAX) {
- break;
- }
- }
- if (i == SPDK_BDEV_QOS_NUM_RATE_LIMIT_TYPES) {
- SPDK_ERRLOG("no rate limits specified\n");
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
- "No rate limits specified");
- goto exit;
- }
-
- free_rpc_set_bdev_qos_limit(&req);
- spdk_bdev_set_qos_rate_limits(bdev, req.limits, spdk_rpc_set_bdev_qos_limit_complete, request);
- return;
-
-invalid:
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");
-exit:
- free_rpc_set_bdev_qos_limit(&req);
-}
-
-SPDK_RPC_REGISTER("set_bdev_qos_limit", spdk_rpc_set_bdev_qos_limit, SPDK_RPC_RUNTIME)
-
-/* SPDK_RPC_ENABLE_BDEV_HISTOGRAM */
-
-struct rpc_enable_bdev_histogram_request {
- char *name;
- bool enable;
-};
-
-static void
-free_rpc_enable_bdev_histogram_request(struct rpc_enable_bdev_histogram_request *r)
-{
- free(r->name);
-}
-
-static const struct spdk_json_object_decoder rpc_enable_bdev_histogram_request_decoders[] = {
- {"name", offsetof(struct rpc_enable_bdev_histogram_request, name), spdk_json_decode_string},
- {"enable", offsetof(struct rpc_enable_bdev_histogram_request, enable), spdk_json_decode_bool},
-};
-
-static void
-_spdk_bdev_histogram_status_cb(void *cb_arg, int status)
-{
- struct spdk_jsonrpc_request *request = cb_arg;
- struct spdk_json_write_ctx *w;
-
- w = spdk_jsonrpc_begin_result(request);
- if (w == NULL) {
- return;
- }
-
- spdk_json_write_bool(w, status == 0);
- spdk_jsonrpc_end_result(request, w);
-}
-
-static void
-spdk_rpc_enable_bdev_histogram(struct spdk_jsonrpc_request *request,
- const struct spdk_json_val *params)
-{
- struct rpc_enable_bdev_histogram_request req = {NULL};
- struct spdk_bdev *bdev;
- int rc;
-
- if (spdk_json_decode_object(params, rpc_enable_bdev_histogram_request_decoders,
- SPDK_COUNTOF(rpc_enable_bdev_histogram_request_decoders),
- &req)) {
- SPDK_ERRLOG("spdk_json_decode_object failed\n");
- rc = -EINVAL;
- goto invalid;
- }
-
- bdev = spdk_bdev_get_by_name(req.name);
- if (bdev == NULL) {
- rc = -ENODEV;
- goto invalid;
- }
-
- spdk_bdev_histogram_enable(bdev, _spdk_bdev_histogram_status_cb, request, req.enable);
-
- free_rpc_enable_bdev_histogram_request(&req);
-
- return;
-
-invalid:
- free_rpc_enable_bdev_histogram_request(&req);
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, spdk_strerror(-rc));
-}
-
-SPDK_RPC_REGISTER("enable_bdev_histogram", spdk_rpc_enable_bdev_histogram, SPDK_RPC_RUNTIME)
-
-/* SPDK_RPC_GET_BDEV_HISTOGRAM */
-
-struct rpc_get_bdev_histogram_request {
- char *name;
-};
-
-static const struct spdk_json_object_decoder rpc_get_bdev_histogram_request_decoders[] = {
- {"name", offsetof(struct rpc_get_bdev_histogram_request, name), spdk_json_decode_string}
-};
-
-static void
-free_rpc_get_bdev_histogram_request(struct rpc_get_bdev_histogram_request *r)
-{
- free(r->name);
-}
-
-static void
-_spdk_rpc_bdev_histogram_data_cb(void *cb_arg, int status, struct spdk_histogram_data *histogram)
-{
- struct spdk_jsonrpc_request *request = cb_arg;
- struct spdk_json_write_ctx *w;
- int rc;
- char *encoded_histogram;
- size_t src_len, dst_len;
-
-
- if (status != 0) {
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
- spdk_strerror(-status));
- goto invalid;
- }
-
- src_len = SPDK_HISTOGRAM_NUM_BUCKETS(histogram) * sizeof(uint64_t);
- dst_len = spdk_base64_get_encoded_strlen(src_len) + 1;
-
- encoded_histogram = malloc(dst_len);
- if (encoded_histogram == NULL) {
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
- spdk_strerror(ENOMEM));
- goto invalid;
- }
-
- rc = spdk_base64_encode(encoded_histogram, histogram->bucket, src_len);
- if (rc != 0) {
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
- spdk_strerror(-rc));
- goto free_encoded_histogram;
- }
-
- w = spdk_jsonrpc_begin_result(request);
- if (w == NULL) {
- goto free_encoded_histogram;
- }
-
- spdk_json_write_object_begin(w);
- spdk_json_write_named_string(w, "histogram", encoded_histogram);
- spdk_json_write_named_int64(w, "bucket_shift", histogram->bucket_shift);
- spdk_json_write_named_int64(w, "tsc_rate", spdk_get_ticks_hz());
- spdk_json_write_object_end(w);
- spdk_jsonrpc_end_result(request, w);
-
-free_encoded_histogram:
- free(encoded_histogram);
-invalid:
- spdk_histogram_data_free(histogram);
-}
-
-static void
-spdk_rpc_get_bdev_histogram(struct spdk_jsonrpc_request *request,
- const struct spdk_json_val *params)
-{
- struct rpc_get_bdev_histogram_request req = {NULL};
- struct spdk_histogram_data *histogram;
- struct spdk_bdev *bdev;
- int rc;
-
- if (spdk_json_decode_object(params, rpc_get_bdev_histogram_request_decoders,
- SPDK_COUNTOF(rpc_get_bdev_histogram_request_decoders),
- &req)) {
- SPDK_ERRLOG("spdk_json_decode_object failed\n");
- rc = -EINVAL;
- goto invalid;
- }
-
- bdev = spdk_bdev_get_by_name(req.name);
- if (bdev == NULL) {
- rc = -ENODEV;
- goto invalid;
- }
-
- histogram = spdk_histogram_data_alloc();
- if (histogram == NULL) {
- rc = -ENOMEM;
- goto invalid;
- }
-
- spdk_bdev_histogram_get(bdev, histogram, _spdk_rpc_bdev_histogram_data_cb, request);
-
- free_rpc_get_bdev_histogram_request(&req);
- return;
-
-invalid:
- free_rpc_get_bdev_histogram_request(&req);
- spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, spdk_strerror(-rc));
-}
-
-SPDK_RPC_REGISTER("get_bdev_histogram", spdk_rpc_get_bdev_histogram, SPDK_RPC_RUNTIME)
projects / ceph.git / blobdiff