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/*-
* 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 "vbdev_delay.h"
#include "spdk/rpc.h"
#include "spdk/util.h"
#include "spdk/string.h"
#include "spdk_internal/log.h"
#include "spdk_internal/assert.h"
struct rpc_update_latency {
char *delay_bdev_name;
char *latency_type;
uint64_t latency_us;
};
static const struct spdk_json_object_decoder rpc_update_latency_decoders[] = {
{"delay_bdev_name", offsetof(struct rpc_update_latency, delay_bdev_name), spdk_json_decode_string},
{"latency_type", offsetof(struct rpc_update_latency, latency_type), spdk_json_decode_string},
{"latency_us", offsetof(struct rpc_update_latency, latency_us), spdk_json_decode_uint64}
};
static void
free_rpc_update_latency(struct rpc_update_latency *req)
{
free(req->delay_bdev_name);
free(req->latency_type);
}
static void
rpc_bdev_delay_update_latency(struct spdk_jsonrpc_request *request,
const struct spdk_json_val *params)
{
struct rpc_update_latency req = {NULL};
struct spdk_json_write_ctx *w;
enum delay_io_type latency_type;
int rc = 0;
if (spdk_json_decode_object(params, rpc_update_latency_decoders,
SPDK_COUNTOF(rpc_update_latency_decoders),
&req)) {
SPDK_DEBUGLOG(SPDK_LOG_VBDEV_DELAY, "spdk_json_decode_object failed\n");
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
"spdk_json_decode_object failed");
goto cleanup;
}
if (!strncmp(req.latency_type, "avg_read", 9)) {
latency_type = DELAY_AVG_READ;
} else if (!strncmp(req.latency_type, "p99_read", 9)) {
latency_type = DELAY_P99_READ;
} else if (!strncmp(req.latency_type, "avg_write", 10)) {
latency_type = DELAY_AVG_WRITE;
} else if (!strncmp(req.latency_type, "p99_write", 10)) {
latency_type = DELAY_P99_WRITE;
} else {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
"Please specify a valid latency type.");
goto cleanup;
}
rc = vbdev_delay_update_latency_value(req.delay_bdev_name, req.latency_us, latency_type);
if (rc == -ENODEV) {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
"The requested bdev does not exist.");
goto cleanup;
} else if (rc == -EINVAL) {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_REQUEST,
"The requested bdev is not a delay bdev.");
goto cleanup;
} else if (rc) {
SPDK_UNREACHABLE();
}
w = spdk_jsonrpc_begin_result(request);
spdk_json_write_bool(w, true);
spdk_jsonrpc_end_result(request, w);
cleanup:
free_rpc_update_latency(&req);
}
SPDK_RPC_REGISTER("bdev_delay_update_latency", rpc_bdev_delay_update_latency, SPDK_RPC_RUNTIME)
struct rpc_construct_delay {
char *base_bdev_name;
char *name;
uint64_t avg_read_latency;
uint64_t p99_read_latency;
uint64_t avg_write_latency;
uint64_t p99_write_latency;
};
static void
free_rpc_construct_delay(struct rpc_construct_delay *r)
{
free(r->base_bdev_name);
free(r->name);
}
static const struct spdk_json_object_decoder rpc_construct_delay_decoders[] = {
{"base_bdev_name", offsetof(struct rpc_construct_delay, base_bdev_name), spdk_json_decode_string},
{"name", offsetof(struct rpc_construct_delay, name), spdk_json_decode_string},
{"avg_read_latency", offsetof(struct rpc_construct_delay, avg_read_latency), spdk_json_decode_uint64},
{"p99_read_latency", offsetof(struct rpc_construct_delay, p99_read_latency), spdk_json_decode_uint64},
{"avg_write_latency", offsetof(struct rpc_construct_delay, avg_write_latency), spdk_json_decode_uint64},
{"p99_write_latency", offsetof(struct rpc_construct_delay, p99_write_latency), spdk_json_decode_uint64},
};
static void
rpc_bdev_delay_create(struct spdk_jsonrpc_request *request,
const struct spdk_json_val *params)
{
struct rpc_construct_delay req = {NULL};
struct spdk_json_write_ctx *w;
int rc;
if (spdk_json_decode_object(params, rpc_construct_delay_decoders,
SPDK_COUNTOF(rpc_construct_delay_decoders),
&req)) {
SPDK_DEBUGLOG(SPDK_LOG_VBDEV_DELAY, "spdk_json_decode_object failed\n");
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
"spdk_json_decode_object failed");
goto cleanup;
}
rc = create_delay_disk(req.base_bdev_name, req.name, req.avg_read_latency, req.p99_read_latency,
req.avg_write_latency, req.p99_write_latency);
if (rc != 0) {
spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
goto cleanup;
}
w = spdk_jsonrpc_begin_result(request);
spdk_json_write_string(w, req.name);
spdk_jsonrpc_end_result(request, w);
cleanup:
free_rpc_construct_delay(&req);
}
SPDK_RPC_REGISTER("bdev_delay_create", rpc_bdev_delay_create, SPDK_RPC_RUNTIME)
struct rpc_delete_delay {
char *name;
};
static void
free_rpc_delete_delay(struct rpc_delete_delay *req)
{
free(req->name);
}
static const struct spdk_json_object_decoder rpc_delete_delay_decoders[] = {
{"name", offsetof(struct rpc_delete_delay, name), spdk_json_decode_string},
};
static void
rpc_bdev_delay_delete_cb(void *cb_arg, int bdeverrno)
{
struct spdk_jsonrpc_request *request = cb_arg;
struct spdk_json_write_ctx *w;
w = spdk_jsonrpc_begin_result(request);
spdk_json_write_bool(w, bdeverrno == 0);
spdk_jsonrpc_end_result(request, w);
}
static void
rpc_bdev_delay_delete(struct spdk_jsonrpc_request *request,
const struct spdk_json_val *params)
{
struct rpc_delete_delay req = {NULL};
struct spdk_bdev *bdev;
if (spdk_json_decode_object(params, rpc_delete_delay_decoders,
SPDK_COUNTOF(rpc_delete_delay_decoders),
&req)) {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
"spdk_json_decode_object failed");
goto cleanup;
}
bdev = spdk_bdev_get_by_name(req.name);
if (bdev == NULL) {
spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV));
goto cleanup;
}
delete_delay_disk(bdev, rpc_bdev_delay_delete_cb, request);
cleanup:
free_rpc_delete_delay(&req);
}
SPDK_RPC_REGISTER("bdev_delay_delete", rpc_bdev_delay_delete, SPDK_RPC_RUNTIME)
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