55b047a776
This gives us a place to initialize iobuf pools, specify subsystem dependencies, and execute RPCs to configure the sizes of the pools. We allow users to configure the size of the pools either through the options in spdk_bdev_opts or through the new RPC, iobuf_set_options. The second option has higher priority, so it will override the options set by the bdev layer. Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com> Change-Id: I7c45ace04bc71c8343658f98248fc7babcf24e5d Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15765 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Community-CI: Mellanox Build Bot Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2022 Intel Corporation.
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* All rights reserved.
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*/
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#include "spdk/stdinc.h"
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#include "spdk/bdev.h"
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#include "spdk/log.h"
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#include "spdk/thread.h"
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#include "spdk_internal/init.h"
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int iobuf_set_opts(struct spdk_iobuf_opts *opts);
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static struct spdk_iobuf_opts g_opts;
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static bool g_opts_set;
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int
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iobuf_set_opts(struct spdk_iobuf_opts *opts)
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{
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int rc;
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rc = spdk_iobuf_set_opts(opts);
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if (rc != 0) {
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return rc;
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}
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g_opts = *opts;
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g_opts_set = true;
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return 0;
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}
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static void
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iobuf_subsystem_initialize(void)
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{
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int rc;
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if (g_opts_set) {
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/* We want to allow users to keep using bdev layer's spdk_bdev_opts to specify the
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* sizes of the pools, but want to have iobuf_set_opts to take precedence over what
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* was set by the spdk_bdev_opts. So, reset the opts here in case bdev layer set
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* them after iobuf_set_opts.
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*/
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rc = spdk_iobuf_set_opts(&g_opts);
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if (rc != 0) {
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/* This should never happen, we've already validated these options */
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assert(0);
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goto finish;
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}
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}
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rc = spdk_iobuf_initialize();
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if (rc != 0) {
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SPDK_ERRLOG("Failed to initialize iobuf\n");
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}
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finish:
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spdk_subsystem_init_next(rc);
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}
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static void
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iobuf_finish_cb(void *ctx)
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{
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spdk_subsystem_fini_next();
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}
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static void
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iobuf_subsystem_finish(void)
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{
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spdk_iobuf_finish(iobuf_finish_cb, NULL);
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}
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static void
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iobuf_write_config_json(struct spdk_json_write_ctx *w)
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{
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struct spdk_iobuf_opts opts;
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spdk_iobuf_get_opts(&opts);
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spdk_json_write_array_begin(w);
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/* Make sure we don't override the options from spdk_bdev_opts, unless iobuf_set_options
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* has been executed
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*/
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if (g_opts_set) {
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spdk_json_write_object_begin(w);
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spdk_json_write_named_string(w, "method", "iobuf_set_options");
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spdk_json_write_named_object_begin(w, "params");
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spdk_json_write_named_uint64(w, "small_pool_count", opts.small_pool_count);
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spdk_json_write_named_uint64(w, "large_pool_count", opts.large_pool_count);
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spdk_json_write_named_uint32(w, "small_bufsize", opts.small_bufsize);
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spdk_json_write_named_uint32(w, "large_bufsize", opts.large_bufsize);
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spdk_json_write_object_end(w);
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spdk_json_write_object_end(w);
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}
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spdk_json_write_array_end(w);
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}
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static struct spdk_subsystem g_subsystem_iobuf = {
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.name = "iobuf",
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.init = iobuf_subsystem_initialize,
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.fini = iobuf_subsystem_finish,
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.write_config_json = iobuf_write_config_json,
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};
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SPDK_SUBSYSTEM_REGISTER(g_subsystem_iobuf);
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