1 files changed, 543 insertions, 0 deletions

diff --git a/src/spdk/module/event/rpc/app_rpc.c b/src/spdk/module/event/rpc/app_rpc.c
new file mode 100644
index 000000000..f223c1734
--- /dev/null
+++ b/src/spdk/module/event/rpc/app_rpc.c
@@ -0,0 +1,543 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) Intel Corporation. All rights reserved.
+ *   Copyright (c) 2019 Mellanox Technologies LTD. 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/event.h"
+#include "spdk/rpc.h"
+#include "spdk/string.h"
+#include "spdk/util.h"
+#include "spdk/env.h"
+#include "spdk/thread.h"
+
+#include "spdk_internal/log.h"
+#include "spdk_internal/event.h"
+#include "spdk_internal/thread.h"
+
+struct rpc_spdk_kill_instance {
+	char *sig_name;
+};
+
+static void
+free_rpc_spdk_kill_instance(struct rpc_spdk_kill_instance *req)
+{
+	free(req->sig_name);
+}
+
+static const struct spdk_json_object_decoder rpc_spdk_kill_instance_decoders[] = {
+	{"sig_name", offsetof(struct rpc_spdk_kill_instance, sig_name), spdk_json_decode_string},
+};
+
+static void
+rpc_spdk_kill_instance(struct spdk_jsonrpc_request *request,
+		       const struct spdk_json_val *params)
+{
+	static const struct {
+		const char	*signal_string;
+		int32_t		signal;
+	} signals[] = {
+		{"SIGINT",	SIGINT},
+		{"SIGTERM",	SIGTERM},
+		{"SIGQUIT",	SIGQUIT},
+		{"SIGHUP",	SIGHUP},
+		{"SIGKILL",	SIGKILL},
+		{"SIGUSR1",	SIGUSR1},
+	};
+	size_t i, sig_count;
+	int signal;
+	struct rpc_spdk_kill_instance req = {};
+	struct spdk_json_write_ctx *w;
+
+	if (spdk_json_decode_object(params, rpc_spdk_kill_instance_decoders,
+				    SPDK_COUNTOF(rpc_spdk_kill_instance_decoders),
+				    &req)) {
+		SPDK_DEBUGLOG(SPDK_LOG_APP_RPC, "spdk_json_decode_object failed\n");
+		goto invalid;
+	}
+
+	sig_count = SPDK_COUNTOF(signals);
+	signal = spdk_strtol(req.sig_name, 10);
+	for (i = 0 ; i < sig_count; i++) {
+		if (strcmp(req.sig_name, signals[i].signal_string) == 0 ||
+		    signal == signals[i].signal) {
+			break;
+		}
+	}
+
+	if (i == sig_count) {
+		goto invalid;
+	}
+
+	SPDK_DEBUGLOG(SPDK_LOG_APP_RPC, "sending signal %d\n", signals[i].signal);
+	free_rpc_spdk_kill_instance(&req);
+	kill(getpid(), signals[i].signal);
+
+	w = spdk_jsonrpc_begin_result(request);
+	spdk_json_write_bool(w, true);
+	spdk_jsonrpc_end_result(request, w);
+	return;
+
+invalid:
+	spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");
+	free_rpc_spdk_kill_instance(&req);
+}
+SPDK_RPC_REGISTER("spdk_kill_instance", rpc_spdk_kill_instance, SPDK_RPC_RUNTIME)
+SPDK_RPC_REGISTER_ALIAS_DEPRECATED(spdk_kill_instance, kill_instance)
+
+
+struct rpc_framework_monitor_context_switch {
+	bool enabled;
+};
+
+static const struct spdk_json_object_decoder rpc_framework_monitor_context_switch_decoders[] = {
+	{"enabled", offsetof(struct rpc_framework_monitor_context_switch, enabled), spdk_json_decode_bool},
+};
+
+static void
+rpc_framework_monitor_context_switch(struct spdk_jsonrpc_request *request,
+				     const struct spdk_json_val *params)
+{
+	struct rpc_framework_monitor_context_switch req = {};
+	struct spdk_json_write_ctx *w;
+
+	if (params != NULL) {
+		if (spdk_json_decode_object(params, rpc_framework_monitor_context_switch_decoders,
+					    SPDK_COUNTOF(rpc_framework_monitor_context_switch_decoders),
+					    &req)) {
+			SPDK_DEBUGLOG(SPDK_LOG_APP_RPC, "spdk_json_decode_object failed\n");
+			spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");
+			return;
+		}
+
+		spdk_framework_enable_context_switch_monitor(req.enabled);
+	}
+
+	w = spdk_jsonrpc_begin_result(request);
+	spdk_json_write_object_begin(w);
+
+	spdk_json_write_named_bool(w, "enabled", spdk_framework_context_switch_monitor_enabled());
+
+	spdk_json_write_object_end(w);
+	spdk_jsonrpc_end_result(request, w);
+}
+
+SPDK_RPC_REGISTER("framework_monitor_context_switch", rpc_framework_monitor_context_switch,
+		  SPDK_RPC_RUNTIME)
+SPDK_RPC_REGISTER_ALIAS_DEPRECATED(framework_monitor_context_switch, context_switch_monitor)
+
+struct rpc_get_stats_ctx {
+	struct spdk_jsonrpc_request *request;
+	struct spdk_json_write_ctx *w;
+	uint64_t now;
+};
+
+static void
+rpc_thread_get_stats_done(void *arg)
+{
+	struct rpc_get_stats_ctx *ctx = arg;
+
+	spdk_json_write_array_end(ctx->w);
+	spdk_json_write_object_end(ctx->w);
+	spdk_jsonrpc_end_result(ctx->request, ctx->w);
+
+	free(ctx);
+}
+
+static void
+rpc_thread_get_stats_for_each(struct spdk_jsonrpc_request *request, spdk_msg_fn fn)
+{
+	struct rpc_get_stats_ctx *ctx;
+
+	ctx = calloc(1, sizeof(*ctx));
+	if (!ctx) {
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 "Memory allocation error");
+		return;
+	}
+	ctx->request = request;
+
+	ctx->w = spdk_jsonrpc_begin_result(ctx->request);
+	spdk_json_write_object_begin(ctx->w);
+	spdk_json_write_named_uint64(ctx->w, "tick_rate", spdk_get_ticks_hz());
+	spdk_json_write_named_array_begin(ctx->w, "threads");
+
+	spdk_for_each_thread(fn, ctx, rpc_thread_get_stats_done);
+}
+
+static void
+_rpc_thread_get_stats(void *arg)
+{
+	struct rpc_get_stats_ctx *ctx = arg;
+	struct spdk_thread *thread = spdk_get_thread();
+	struct spdk_poller *poller;
+	struct spdk_thread_stats stats;
+	uint64_t active_pollers_count = 0;
+	uint64_t timed_pollers_count = 0;
+	uint64_t paused_pollers_count = 0;
+
+	TAILQ_FOREACH(poller, &thread->active_pollers, tailq) {
+		active_pollers_count++;
+	}
+	TAILQ_FOREACH(poller, &thread->timed_pollers, tailq) {
+		timed_pollers_count++;
+	}
+	TAILQ_FOREACH(poller, &thread->paused_pollers, tailq) {
+		paused_pollers_count++;
+	}
+
+	if (0 == spdk_thread_get_stats(&stats)) {
+		spdk_json_write_object_begin(ctx->w);
+		spdk_json_write_named_string(ctx->w, "name", spdk_thread_get_name(thread));
+		spdk_json_write_named_uint64(ctx->w, "id", spdk_thread_get_id(thread));
+		spdk_json_write_named_string(ctx->w, "cpumask",
+					     spdk_cpuset_fmt(spdk_thread_get_cpumask(thread)));
+		spdk_json_write_named_uint64(ctx->w, "busy", stats.busy_tsc);
+		spdk_json_write_named_uint64(ctx->w, "idle", stats.idle_tsc);
+		spdk_json_write_named_uint64(ctx->w, "active_pollers_count", active_pollers_count);
+		spdk_json_write_named_uint64(ctx->w, "timed_pollers_count", timed_pollers_count);
+		spdk_json_write_named_uint64(ctx->w, "paused_pollers_count", paused_pollers_count);
+		spdk_json_write_object_end(ctx->w);
+	}
+}
+
+static void
+rpc_thread_get_stats(struct spdk_jsonrpc_request *request,
+		     const struct spdk_json_val *params)
+{
+	if (params) {
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						 "'thread_get_stats' requires no arguments");
+		return;
+	}
+
+	rpc_thread_get_stats_for_each(request, _rpc_thread_get_stats);
+}
+
+SPDK_RPC_REGISTER("thread_get_stats", rpc_thread_get_stats, SPDK_RPC_RUNTIME)
+
+static void
+rpc_get_poller(struct spdk_poller *poller, struct spdk_json_write_ctx *w)
+{
+	spdk_json_write_object_begin(w);
+	spdk_json_write_named_string(w, "name", poller->name);
+	spdk_json_write_named_string(w, "state", spdk_poller_state_str(poller->state));
+	spdk_json_write_named_uint64(w, "run_count", poller->run_count);
+	spdk_json_write_named_uint64(w, "busy_count", poller->busy_count);
+	if (poller->period_ticks) {
+		spdk_json_write_named_uint64(w, "period_ticks", poller->period_ticks);
+	}
+	spdk_json_write_object_end(w);
+}
+
+static void
+_rpc_thread_get_pollers(void *arg)
+{
+	struct rpc_get_stats_ctx *ctx = arg;
+	struct spdk_thread *thread = spdk_get_thread();
+	struct spdk_poller *poller;
+
+	spdk_json_write_object_begin(ctx->w);
+	spdk_json_write_named_string(ctx->w, "name", spdk_thread_get_name(thread));
+	spdk_json_write_named_uint64(ctx->w, "id", spdk_thread_get_id(thread));
+
+	spdk_json_write_named_array_begin(ctx->w, "active_pollers");
+	TAILQ_FOREACH(poller, &thread->active_pollers, tailq) {
+		rpc_get_poller(poller, ctx->w);
+	}
+	spdk_json_write_array_end(ctx->w);
+
+	spdk_json_write_named_array_begin(ctx->w, "timed_pollers");
+	TAILQ_FOREACH(poller, &thread->timed_pollers, tailq) {
+		rpc_get_poller(poller, ctx->w);
+	}
+	spdk_json_write_array_end(ctx->w);
+
+	spdk_json_write_named_array_begin(ctx->w, "paused_pollers");
+	TAILQ_FOREACH(poller, &thread->paused_pollers, tailq) {
+		rpc_get_poller(poller, ctx->w);
+	}
+	spdk_json_write_array_end(ctx->w);
+
+	spdk_json_write_object_end(ctx->w);
+}
+
+static void
+rpc_thread_get_pollers(struct spdk_jsonrpc_request *request,
+		       const struct spdk_json_val *params)
+{
+	if (params) {
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						 "'thread_get_pollers' requires no arguments");
+		return;
+	}
+
+	rpc_thread_get_stats_for_each(request, _rpc_thread_get_pollers);
+}
+
+SPDK_RPC_REGISTER("thread_get_pollers", rpc_thread_get_pollers, SPDK_RPC_RUNTIME)
+
+static void
+rpc_get_io_channel(struct spdk_io_channel *ch, struct spdk_json_write_ctx *w)
+{
+	spdk_json_write_object_begin(w);
+	spdk_json_write_named_string(w, "name", spdk_io_device_get_name(ch->dev));
+	spdk_json_write_named_uint32(w, "ref", ch->ref);
+	spdk_json_write_object_end(w);
+}
+
+static void
+_rpc_thread_get_io_channels(void *arg)
+{
+	struct rpc_get_stats_ctx *ctx = arg;
+	struct spdk_thread *thread = spdk_get_thread();
+	struct spdk_io_channel *ch;
+
+	spdk_json_write_object_begin(ctx->w);
+	spdk_json_write_named_string(ctx->w, "name", spdk_thread_get_name(thread));
+
+	spdk_json_write_named_array_begin(ctx->w, "io_channels");
+	TAILQ_FOREACH(ch, &thread->io_channels, tailq) {
+		rpc_get_io_channel(ch, ctx->w);
+	}
+	spdk_json_write_array_end(ctx->w);
+
+	spdk_json_write_object_end(ctx->w);
+}
+
+static void
+rpc_thread_get_io_channels(struct spdk_jsonrpc_request *request,
+			   const struct spdk_json_val *params)
+{
+	if (params) {
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						 "'thread_get_io_channels' requires no arguments");
+		return;
+	}
+
+	rpc_thread_get_stats_for_each(request, _rpc_thread_get_io_channels);
+}
+
+SPDK_RPC_REGISTER("thread_get_io_channels", rpc_thread_get_io_channels, SPDK_RPC_RUNTIME);
+
+static void
+rpc_framework_get_reactors_done(void *arg1, void *arg2)
+{
+	struct rpc_get_stats_ctx *ctx = arg1;
+
+	spdk_json_write_array_end(ctx->w);
+	spdk_json_write_object_end(ctx->w);
+	spdk_jsonrpc_end_result(ctx->request, ctx->w);
+
+	free(ctx);
+}
+
+#define GET_DELTA(end, start)	(end >= start ? end - start : 0)
+
+static void
+_rpc_framework_get_reactors(void *arg1, void *arg2)
+{
+	struct rpc_get_stats_ctx *ctx = arg1;
+	uint32_t current_core;
+	struct spdk_reactor *reactor;
+	struct spdk_lw_thread *lw_thread;
+	struct spdk_thread *thread;
+
+	current_core = spdk_env_get_current_core();
+	reactor = spdk_reactor_get(current_core);
+
+	assert(reactor != NULL);
+
+	spdk_json_write_object_begin(ctx->w);
+	spdk_json_write_named_uint32(ctx->w, "lcore", current_core);
+	spdk_json_write_named_uint64(ctx->w, "busy", reactor->busy_tsc);
+	spdk_json_write_named_uint64(ctx->w, "idle", reactor->idle_tsc);
+
+	spdk_json_write_named_array_begin(ctx->w, "lw_threads");
+	TAILQ_FOREACH(lw_thread, &reactor->threads, link) {
+		thread = spdk_thread_get_from_ctx(lw_thread);
+
+		spdk_json_write_object_begin(ctx->w);
+		spdk_json_write_named_string(ctx->w, "name", spdk_thread_get_name(thread));
+		spdk_json_write_named_uint64(ctx->w, "id", spdk_thread_get_id(thread));
+		spdk_json_write_named_string(ctx->w, "cpumask",
+					     spdk_cpuset_fmt(spdk_thread_get_cpumask(thread)));
+		spdk_json_write_named_uint64(ctx->w, "elapsed",
+					     GET_DELTA(ctx->now, lw_thread->tsc_start));
+		spdk_json_write_object_end(ctx->w);
+	}
+	spdk_json_write_array_end(ctx->w);
+
+	spdk_json_write_object_end(ctx->w);
+}
+
+static void
+rpc_framework_get_reactors(struct spdk_jsonrpc_request *request,
+			   const struct spdk_json_val *params)
+{
+	struct rpc_get_stats_ctx *ctx;
+
+	if (params) {
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						 "`framework_get_reactors` requires no arguments");
+		return;
+	}
+
+	ctx = calloc(1, sizeof(*ctx));
+	if (!ctx) {
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 "Memory allocation error");
+		return;
+	}
+
+	ctx->now = spdk_get_ticks();
+	ctx->request = request;
+	ctx->w = spdk_jsonrpc_begin_result(ctx->request);
+
+	spdk_json_write_object_begin(ctx->w);
+	spdk_json_write_named_uint64(ctx->w, "tick_rate", spdk_get_ticks_hz());
+	spdk_json_write_named_array_begin(ctx->w, "reactors");
+
+	spdk_for_each_reactor(_rpc_framework_get_reactors, ctx, NULL,
+			      rpc_framework_get_reactors_done);
+}
+
+SPDK_RPC_REGISTER("framework_get_reactors", rpc_framework_get_reactors, SPDK_RPC_RUNTIME)
+
+struct rpc_thread_set_cpumask_ctx {
+	struct spdk_jsonrpc_request *request;
+	struct spdk_cpuset cpumask;
+	int status;
+	struct spdk_thread *orig_thread;
+};
+
+static void
+rpc_thread_set_cpumask_done(void *_ctx)
+{
+	struct rpc_thread_set_cpumask_ctx *ctx = _ctx;
+	struct spdk_json_write_ctx *w;
+
+	if (ctx->status == 0) {
+		w = spdk_jsonrpc_begin_result(ctx->request);
+		spdk_json_write_bool(w, true);
+		spdk_jsonrpc_end_result(ctx->request, w);
+	} else {
+		spdk_jsonrpc_send_error_response(ctx->request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 spdk_strerror(-ctx->status));
+	}
+
+	free(ctx);
+}
+
+static void
+_rpc_thread_set_cpumask(void *_ctx)
+{
+	struct rpc_thread_set_cpumask_ctx *ctx = _ctx;
+
+	ctx->status = spdk_thread_set_cpumask(&ctx->cpumask);
+
+	spdk_thread_send_msg(ctx->orig_thread, rpc_thread_set_cpumask_done, ctx);
+}
+
+struct rpc_thread_set_cpumask {
+	uint64_t id;
+	char *cpumask;
+};
+
+static const struct spdk_json_object_decoder rpc_thread_set_cpumask_decoders[] = {
+	{"id", offsetof(struct rpc_thread_set_cpumask, id), spdk_json_decode_uint64},
+	{"cpumask", offsetof(struct rpc_thread_set_cpumask, cpumask), spdk_json_decode_string},
+};
+
+static void
+rpc_thread_set_cpumask(struct spdk_jsonrpc_request *request,
+		       const struct spdk_json_val *params)
+{
+	struct rpc_thread_set_cpumask req = {};
+	struct rpc_thread_set_cpumask_ctx *ctx;
+	struct spdk_thread *thread;
+	int rc;
+
+	ctx = calloc(1, sizeof(*ctx));
+	if (ctx == NULL) {
+		SPDK_ERRLOG("Memory allocation failed\n");
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						 "Memory allocation failed");
+		return;
+	}
+
+	if (spdk_json_decode_object(params, rpc_thread_set_cpumask_decoders,
+				    SPDK_COUNTOF(rpc_thread_set_cpumask_decoders),
+				    &req)) {
+		SPDK_ERRLOG("spdk_json_decode_object failed\n");
+		spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						 "spdk_json_decode_object failed");
+		goto err;
+	}
+
+	thread = spdk_thread_get_by_id(req.id);
+	if (thread == NULL) {
+		SPDK_ERRLOG("Thread %" PRIu64 " does not exist\n", req.id);
+		spdk_jsonrpc_send_error_response_fmt(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
+						     "Thread %" PRIu64 " does not exist", req.id);
+		goto err;
+	}
+
+	rc = spdk_app_parse_core_mask(req.cpumask, &ctx->cpumask);
+	if (rc != 0) {
+		SPDK_ERRLOG("Invalid cpumask %s\n", req.cpumask);
+		spdk_jsonrpc_send_error_response_fmt(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						     "Invalid cpumask %s", req.cpumask);
+		goto err;
+	}
+
+	if (spdk_cpuset_count(&ctx->cpumask) == 0) {
+		spdk_jsonrpc_send_error_response_fmt(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
+						     "No CPU is selected from reactor mask %s\n",
+						     spdk_cpuset_fmt(spdk_app_get_core_mask()));
+		goto err;
+	}
+
+	ctx->request = request;
+	ctx->orig_thread = spdk_get_thread();
+
+	spdk_thread_send_msg(thread, _rpc_thread_set_cpumask, ctx);
+
+	free(req.cpumask);
+	return;
+
+err:
+	free(req.cpumask);
+	free(ctx);
+}
+SPDK_RPC_REGISTER("thread_set_cpumask", rpc_thread_set_cpumask, SPDK_RPC_RUNTIME)
+SPDK_LOG_REGISTER_COMPONENT("APP_RPC", SPDK_LOG_APP_RPC)