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- /*
- * QEMU Crypto Device Implementation
- *
- * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
- *
- * Authors:
- * Gonglei <arei.gonglei@huawei.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- *
- */
- #include "qemu/osdep.h"
- #include "sysemu/cryptodev.h"
- #include "sysemu/stats.h"
- #include "qapi/error.h"
- #include "qapi/qapi-commands-cryptodev.h"
- #include "qapi/qapi-types-stats.h"
- #include "qapi/visitor.h"
- #include "qemu/config-file.h"
- #include "qemu/error-report.h"
- #include "qemu/main-loop.h"
- #include "qom/object_interfaces.h"
- #include "hw/virtio/virtio-crypto.h"
- #define SYM_ENCRYPT_OPS_STR "sym-encrypt-ops"
- #define SYM_DECRYPT_OPS_STR "sym-decrypt-ops"
- #define SYM_ENCRYPT_BYTES_STR "sym-encrypt-bytes"
- #define SYM_DECRYPT_BYTES_STR "sym-decrypt-bytes"
- #define ASYM_ENCRYPT_OPS_STR "asym-encrypt-ops"
- #define ASYM_DECRYPT_OPS_STR "asym-decrypt-ops"
- #define ASYM_SIGN_OPS_STR "asym-sign-ops"
- #define ASYM_VERIFY_OPS_STR "asym-verify-ops"
- #define ASYM_ENCRYPT_BYTES_STR "asym-encrypt-bytes"
- #define ASYM_DECRYPT_BYTES_STR "asym-decrypt-bytes"
- #define ASYM_SIGN_BYTES_STR "asym-sign-bytes"
- #define ASYM_VERIFY_BYTES_STR "asym-verify-bytes"
- typedef struct StatsArgs {
- union StatsResultsType {
- StatsResultList **stats;
- StatsSchemaList **schema;
- } result;
- strList *names;
- Error **errp;
- } StatsArgs;
- static QTAILQ_HEAD(, CryptoDevBackendClient) crypto_clients;
- static int qmp_query_cryptodev_foreach(Object *obj, void *data)
- {
- CryptoDevBackend *backend;
- QCryptodevInfoList **infolist = data;
- uint32_t services, i;
- if (!object_dynamic_cast(obj, TYPE_CRYPTODEV_BACKEND)) {
- return 0;
- }
- QCryptodevInfo *info = g_new0(QCryptodevInfo, 1);
- info->id = g_strdup(object_get_canonical_path_component(obj));
- backend = CRYPTODEV_BACKEND(obj);
- services = backend->conf.crypto_services;
- for (i = 0; i < QCRYPTODEV_BACKEND_SERVICE_TYPE__MAX; i++) {
- if (services & (1 << i)) {
- QAPI_LIST_PREPEND(info->service, i);
- }
- }
- for (i = 0; i < backend->conf.peers.queues; i++) {
- CryptoDevBackendClient *cc = backend->conf.peers.ccs[i];
- QCryptodevBackendClient *client = g_new0(QCryptodevBackendClient, 1);
- client->queue = cc->queue_index;
- client->type = cc->type;
- QAPI_LIST_PREPEND(info->client, client);
- }
- QAPI_LIST_PREPEND(*infolist, info);
- return 0;
- }
- QCryptodevInfoList *qmp_query_cryptodev(Error **errp)
- {
- QCryptodevInfoList *list = NULL;
- Object *objs = container_get(object_get_root(), "/objects");
- object_child_foreach(objs, qmp_query_cryptodev_foreach, &list);
- return list;
- }
- CryptoDevBackendClient *cryptodev_backend_new_client(void)
- {
- CryptoDevBackendClient *cc;
- cc = g_new0(CryptoDevBackendClient, 1);
- QTAILQ_INSERT_TAIL(&crypto_clients, cc, next);
- return cc;
- }
- void cryptodev_backend_free_client(
- CryptoDevBackendClient *cc)
- {
- QTAILQ_REMOVE(&crypto_clients, cc, next);
- g_free(cc->info_str);
- g_free(cc);
- }
- void cryptodev_backend_cleanup(
- CryptoDevBackend *backend,
- Error **errp)
- {
- CryptoDevBackendClass *bc =
- CRYPTODEV_BACKEND_GET_CLASS(backend);
- if (bc->cleanup) {
- bc->cleanup(backend, errp);
- }
- g_free(backend->sym_stat);
- g_free(backend->asym_stat);
- }
- int cryptodev_backend_create_session(
- CryptoDevBackend *backend,
- CryptoDevBackendSessionInfo *sess_info,
- uint32_t queue_index,
- CryptoDevCompletionFunc cb,
- void *opaque)
- {
- CryptoDevBackendClass *bc =
- CRYPTODEV_BACKEND_GET_CLASS(backend);
- if (bc->create_session) {
- return bc->create_session(backend, sess_info, queue_index, cb, opaque);
- }
- return -VIRTIO_CRYPTO_NOTSUPP;
- }
- int cryptodev_backend_close_session(
- CryptoDevBackend *backend,
- uint64_t session_id,
- uint32_t queue_index,
- CryptoDevCompletionFunc cb,
- void *opaque)
- {
- CryptoDevBackendClass *bc =
- CRYPTODEV_BACKEND_GET_CLASS(backend);
- if (bc->close_session) {
- return bc->close_session(backend, session_id, queue_index, cb, opaque);
- }
- return -VIRTIO_CRYPTO_NOTSUPP;
- }
- static int cryptodev_backend_operation(
- CryptoDevBackend *backend,
- CryptoDevBackendOpInfo *op_info)
- {
- CryptoDevBackendClass *bc =
- CRYPTODEV_BACKEND_GET_CLASS(backend);
- if (bc->do_op) {
- return bc->do_op(backend, op_info);
- }
- return -VIRTIO_CRYPTO_NOTSUPP;
- }
- static int cryptodev_backend_account(CryptoDevBackend *backend,
- CryptoDevBackendOpInfo *op_info)
- {
- enum QCryptodevBackendAlgType algtype = op_info->algtype;
- int len;
- if (algtype == QCRYPTODEV_BACKEND_ALG_ASYM) {
- CryptoDevBackendAsymOpInfo *asym_op_info = op_info->u.asym_op_info;
- len = asym_op_info->src_len;
- if (unlikely(!backend->asym_stat)) {
- error_report("cryptodev: Unexpected asym operation");
- return -VIRTIO_CRYPTO_NOTSUPP;
- }
- switch (op_info->op_code) {
- case VIRTIO_CRYPTO_AKCIPHER_ENCRYPT:
- CryptodevAsymStatIncEncrypt(backend, len);
- break;
- case VIRTIO_CRYPTO_AKCIPHER_DECRYPT:
- CryptodevAsymStatIncDecrypt(backend, len);
- break;
- case VIRTIO_CRYPTO_AKCIPHER_SIGN:
- CryptodevAsymStatIncSign(backend, len);
- break;
- case VIRTIO_CRYPTO_AKCIPHER_VERIFY:
- CryptodevAsymStatIncVerify(backend, len);
- break;
- default:
- return -VIRTIO_CRYPTO_NOTSUPP;
- }
- } else if (algtype == QCRYPTODEV_BACKEND_ALG_SYM) {
- CryptoDevBackendSymOpInfo *sym_op_info = op_info->u.sym_op_info;
- len = sym_op_info->src_len;
- if (unlikely(!backend->sym_stat)) {
- error_report("cryptodev: Unexpected sym operation");
- return -VIRTIO_CRYPTO_NOTSUPP;
- }
- switch (op_info->op_code) {
- case VIRTIO_CRYPTO_CIPHER_ENCRYPT:
- CryptodevSymStatIncEncrypt(backend, len);
- break;
- case VIRTIO_CRYPTO_CIPHER_DECRYPT:
- CryptodevSymStatIncDecrypt(backend, len);
- break;
- default:
- return -VIRTIO_CRYPTO_NOTSUPP;
- }
- } else {
- error_report("Unsupported cryptodev alg type: %" PRIu32 "", algtype);
- return -VIRTIO_CRYPTO_NOTSUPP;
- }
- return len;
- }
- static void cryptodev_backend_throttle_timer_cb(void *opaque)
- {
- CryptoDevBackend *backend = (CryptoDevBackend *)opaque;
- CryptoDevBackendOpInfo *op_info, *tmpop;
- int ret;
- QTAILQ_FOREACH_SAFE(op_info, &backend->opinfos, next, tmpop) {
- QTAILQ_REMOVE(&backend->opinfos, op_info, next);
- ret = cryptodev_backend_account(backend, op_info);
- if (ret < 0) {
- op_info->cb(op_info->opaque, ret);
- continue;
- }
- throttle_account(&backend->ts, THROTTLE_WRITE, ret);
- cryptodev_backend_operation(backend, op_info);
- if (throttle_enabled(&backend->tc) &&
- throttle_schedule_timer(&backend->ts, &backend->tt,
- THROTTLE_WRITE)) {
- break;
- }
- }
- }
- int cryptodev_backend_crypto_operation(
- CryptoDevBackend *backend,
- CryptoDevBackendOpInfo *op_info)
- {
- int ret;
- if (!throttle_enabled(&backend->tc)) {
- goto do_account;
- }
- if (throttle_schedule_timer(&backend->ts, &backend->tt, THROTTLE_WRITE) ||
- !QTAILQ_EMPTY(&backend->opinfos)) {
- QTAILQ_INSERT_TAIL(&backend->opinfos, op_info, next);
- return 0;
- }
- do_account:
- ret = cryptodev_backend_account(backend, op_info);
- if (ret < 0) {
- return ret;
- }
- throttle_account(&backend->ts, THROTTLE_WRITE, ret);
- return cryptodev_backend_operation(backend, op_info);
- }
- static void
- cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name,
- void *opaque, Error **errp)
- {
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
- uint32_t value = backend->conf.peers.queues;
- visit_type_uint32(v, name, &value, errp);
- }
- static void
- cryptodev_backend_set_queues(Object *obj, Visitor *v, const char *name,
- void *opaque, Error **errp)
- {
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
- uint32_t value;
- if (!visit_type_uint32(v, name, &value, errp)) {
- return;
- }
- if (!value) {
- error_setg(errp, "Property '%s.%s' doesn't take value '%" PRIu32 "'",
- object_get_typename(obj), name, value);
- return;
- }
- backend->conf.peers.queues = value;
- }
- static void cryptodev_backend_set_throttle(CryptoDevBackend *backend, int field,
- uint64_t value, Error **errp)
- {
- uint64_t orig = backend->tc.buckets[field].avg;
- bool enabled = throttle_enabled(&backend->tc);
- if (orig == value) {
- return;
- }
- backend->tc.buckets[field].avg = value;
- if (!throttle_enabled(&backend->tc)) {
- throttle_timers_destroy(&backend->tt);
- cryptodev_backend_throttle_timer_cb(backend); /* drain opinfos */
- return;
- }
- if (!throttle_is_valid(&backend->tc, errp)) {
- backend->tc.buckets[field].avg = orig; /* revert change */
- return;
- }
- if (!enabled) {
- throttle_init(&backend->ts);
- throttle_timers_init(&backend->tt, qemu_get_aio_context(),
- QEMU_CLOCK_REALTIME, NULL,
- cryptodev_backend_throttle_timer_cb, backend);
- }
- throttle_config(&backend->ts, QEMU_CLOCK_REALTIME, &backend->tc);
- }
- static void cryptodev_backend_get_bps(Object *obj, Visitor *v,
- const char *name, void *opaque,
- Error **errp)
- {
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
- uint64_t value = backend->tc.buckets[THROTTLE_BPS_TOTAL].avg;
- visit_type_uint64(v, name, &value, errp);
- }
- static void cryptodev_backend_set_bps(Object *obj, Visitor *v, const char *name,
- void *opaque, Error **errp)
- {
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
- uint64_t value;
- if (!visit_type_uint64(v, name, &value, errp)) {
- return;
- }
- cryptodev_backend_set_throttle(backend, THROTTLE_BPS_TOTAL, value, errp);
- }
- static void cryptodev_backend_get_ops(Object *obj, Visitor *v, const char *name,
- void *opaque, Error **errp)
- {
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
- uint64_t value = backend->tc.buckets[THROTTLE_OPS_TOTAL].avg;
- visit_type_uint64(v, name, &value, errp);
- }
- static void cryptodev_backend_set_ops(Object *obj, Visitor *v,
- const char *name, void *opaque,
- Error **errp)
- {
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
- uint64_t value;
- if (!visit_type_uint64(v, name, &value, errp)) {
- return;
- }
- cryptodev_backend_set_throttle(backend, THROTTLE_OPS_TOTAL, value, errp);
- }
- static void
- cryptodev_backend_complete(UserCreatable *uc, Error **errp)
- {
- ERRP_GUARD();
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(uc);
- CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(uc);
- uint32_t services;
- uint64_t value;
- QTAILQ_INIT(&backend->opinfos);
- value = backend->tc.buckets[THROTTLE_OPS_TOTAL].avg;
- cryptodev_backend_set_throttle(backend, THROTTLE_OPS_TOTAL, value, errp);
- if (*errp) {
- return;
- }
- value = backend->tc.buckets[THROTTLE_BPS_TOTAL].avg;
- cryptodev_backend_set_throttle(backend, THROTTLE_BPS_TOTAL, value, errp);
- if (*errp) {
- return;
- }
- if (bc->init) {
- bc->init(backend, errp);
- if (*errp) {
- return;
- }
- }
- services = backend->conf.crypto_services;
- if (services & (1 << QCRYPTODEV_BACKEND_SERVICE_TYPE_CIPHER)) {
- backend->sym_stat = g_new0(CryptodevBackendSymStat, 1);
- }
- if (services & (1 << QCRYPTODEV_BACKEND_SERVICE_TYPE_AKCIPHER)) {
- backend->asym_stat = g_new0(CryptodevBackendAsymStat, 1);
- }
- }
- void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used)
- {
- backend->is_used = used;
- }
- bool cryptodev_backend_is_used(CryptoDevBackend *backend)
- {
- return backend->is_used;
- }
- void cryptodev_backend_set_ready(CryptoDevBackend *backend, bool ready)
- {
- backend->ready = ready;
- }
- bool cryptodev_backend_is_ready(CryptoDevBackend *backend)
- {
- return backend->ready;
- }
- static bool
- cryptodev_backend_can_be_deleted(UserCreatable *uc)
- {
- return !cryptodev_backend_is_used(CRYPTODEV_BACKEND(uc));
- }
- static void cryptodev_backend_instance_init(Object *obj)
- {
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
- /* Initialize devices' queues property to 1 */
- object_property_set_int(obj, "queues", 1, NULL);
- throttle_config_init(&backend->tc);
- }
- static void cryptodev_backend_finalize(Object *obj)
- {
- CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
- cryptodev_backend_cleanup(backend, NULL);
- if (throttle_enabled(&backend->tc)) {
- throttle_timers_destroy(&backend->tt);
- }
- }
- static StatsList *cryptodev_backend_stats_add(const char *name, int64_t *val,
- StatsList *stats_list)
- {
- Stats *stats = g_new0(Stats, 1);
- stats->name = g_strdup(name);
- stats->value = g_new0(StatsValue, 1);
- stats->value->type = QTYPE_QNUM;
- stats->value->u.scalar = *val;
- QAPI_LIST_PREPEND(stats_list, stats);
- return stats_list;
- }
- static int cryptodev_backend_stats_query(Object *obj, void *data)
- {
- StatsArgs *stats_args = data;
- StatsResultList **stats_results = stats_args->result.stats;
- StatsList *stats_list = NULL;
- StatsResult *entry;
- CryptoDevBackend *backend;
- CryptodevBackendSymStat *sym_stat;
- CryptodevBackendAsymStat *asym_stat;
- if (!object_dynamic_cast(obj, TYPE_CRYPTODEV_BACKEND)) {
- return 0;
- }
- backend = CRYPTODEV_BACKEND(obj);
- sym_stat = backend->sym_stat;
- if (sym_stat) {
- stats_list = cryptodev_backend_stats_add(SYM_ENCRYPT_OPS_STR,
- &sym_stat->encrypt_ops, stats_list);
- stats_list = cryptodev_backend_stats_add(SYM_DECRYPT_OPS_STR,
- &sym_stat->decrypt_ops, stats_list);
- stats_list = cryptodev_backend_stats_add(SYM_ENCRYPT_BYTES_STR,
- &sym_stat->encrypt_bytes, stats_list);
- stats_list = cryptodev_backend_stats_add(SYM_DECRYPT_BYTES_STR,
- &sym_stat->decrypt_bytes, stats_list);
- }
- asym_stat = backend->asym_stat;
- if (asym_stat) {
- stats_list = cryptodev_backend_stats_add(ASYM_ENCRYPT_OPS_STR,
- &asym_stat->encrypt_ops, stats_list);
- stats_list = cryptodev_backend_stats_add(ASYM_DECRYPT_OPS_STR,
- &asym_stat->decrypt_ops, stats_list);
- stats_list = cryptodev_backend_stats_add(ASYM_SIGN_OPS_STR,
- &asym_stat->sign_ops, stats_list);
- stats_list = cryptodev_backend_stats_add(ASYM_VERIFY_OPS_STR,
- &asym_stat->verify_ops, stats_list);
- stats_list = cryptodev_backend_stats_add(ASYM_ENCRYPT_BYTES_STR,
- &asym_stat->encrypt_bytes, stats_list);
- stats_list = cryptodev_backend_stats_add(ASYM_DECRYPT_BYTES_STR,
- &asym_stat->decrypt_bytes, stats_list);
- stats_list = cryptodev_backend_stats_add(ASYM_SIGN_BYTES_STR,
- &asym_stat->sign_bytes, stats_list);
- stats_list = cryptodev_backend_stats_add(ASYM_VERIFY_BYTES_STR,
- &asym_stat->verify_bytes, stats_list);
- }
- entry = g_new0(StatsResult, 1);
- entry->provider = STATS_PROVIDER_CRYPTODEV;
- entry->qom_path = object_get_canonical_path(obj);
- entry->stats = stats_list;
- QAPI_LIST_PREPEND(*stats_results, entry);
- return 0;
- }
- static void cryptodev_backend_stats_cb(StatsResultList **result,
- StatsTarget target,
- strList *names, strList *targets,
- Error **errp)
- {
- switch (target) {
- case STATS_TARGET_CRYPTODEV:
- {
- Object *objs = container_get(object_get_root(), "/objects");
- StatsArgs stats_args;
- stats_args.result.stats = result;
- stats_args.names = names;
- stats_args.errp = errp;
- object_child_foreach(objs, cryptodev_backend_stats_query, &stats_args);
- break;
- }
- default:
- break;
- }
- }
- static StatsSchemaValueList *cryptodev_backend_schemas_add(const char *name,
- StatsSchemaValueList *list)
- {
- StatsSchemaValueList *schema_entry = g_new0(StatsSchemaValueList, 1);
- schema_entry->value = g_new0(StatsSchemaValue, 1);
- schema_entry->value->type = STATS_TYPE_CUMULATIVE;
- schema_entry->value->name = g_strdup(name);
- schema_entry->next = list;
- return schema_entry;
- }
- static void cryptodev_backend_schemas_cb(StatsSchemaList **result,
- Error **errp)
- {
- StatsSchemaValueList *stats_list = NULL;
- const char *sym_stats[] = { SYM_ENCRYPT_OPS_STR, SYM_DECRYPT_OPS_STR,
- SYM_ENCRYPT_BYTES_STR, SYM_DECRYPT_BYTES_STR };
- const char *asym_stats[] = { ASYM_ENCRYPT_OPS_STR, ASYM_DECRYPT_OPS_STR,
- ASYM_SIGN_OPS_STR, ASYM_VERIFY_OPS_STR,
- ASYM_ENCRYPT_BYTES_STR, ASYM_DECRYPT_BYTES_STR,
- ASYM_SIGN_BYTES_STR, ASYM_VERIFY_BYTES_STR };
- for (int i = 0; i < ARRAY_SIZE(sym_stats); i++) {
- stats_list = cryptodev_backend_schemas_add(sym_stats[i], stats_list);
- }
- for (int i = 0; i < ARRAY_SIZE(asym_stats); i++) {
- stats_list = cryptodev_backend_schemas_add(asym_stats[i], stats_list);
- }
- add_stats_schema(result, STATS_PROVIDER_CRYPTODEV, STATS_TARGET_CRYPTODEV,
- stats_list);
- }
- static void
- cryptodev_backend_class_init(ObjectClass *oc, void *data)
- {
- UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
- ucc->complete = cryptodev_backend_complete;
- ucc->can_be_deleted = cryptodev_backend_can_be_deleted;
- QTAILQ_INIT(&crypto_clients);
- object_class_property_add(oc, "queues", "uint32",
- cryptodev_backend_get_queues,
- cryptodev_backend_set_queues,
- NULL, NULL);
- object_class_property_add(oc, "throttle-bps", "uint64",
- cryptodev_backend_get_bps,
- cryptodev_backend_set_bps,
- NULL, NULL);
- object_class_property_add(oc, "throttle-ops", "uint64",
- cryptodev_backend_get_ops,
- cryptodev_backend_set_ops,
- NULL, NULL);
- add_stats_callbacks(STATS_PROVIDER_CRYPTODEV, cryptodev_backend_stats_cb,
- cryptodev_backend_schemas_cb);
- }
- static const TypeInfo cryptodev_backend_info = {
- .name = TYPE_CRYPTODEV_BACKEND,
- .parent = TYPE_OBJECT,
- .instance_size = sizeof(CryptoDevBackend),
- .instance_init = cryptodev_backend_instance_init,
- .instance_finalize = cryptodev_backend_finalize,
- .class_size = sizeof(CryptoDevBackendClass),
- .class_init = cryptodev_backend_class_init,
- .interfaces = (InterfaceInfo[]) {
- { TYPE_USER_CREATABLE },
- { }
- }
- };
- static void
- cryptodev_backend_register_types(void)
- {
- type_register_static(&cryptodev_backend_info);
- }
- type_init(cryptodev_backend_register_types);
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