2018-03-01 16:46:28 +03:00
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/*
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* QEMU Cryptodev backend for QEMU cipher APIs
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*
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* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
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*
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* Authors:
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* Gonglei <arei.gonglei@huawei.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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2020-10-14 16:37:22 +03:00
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* version 2.1 of the License, or (at your option) any later version.
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2018-03-01 16:46:28 +03:00
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qapi/qmp/qerror.h"
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#include "qemu/error-report.h"
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2018-05-24 13:33:33 +03:00
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#include "hw/virtio/vhost-user.h"
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2018-03-01 16:46:28 +03:00
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#include "standard-headers/linux/virtio_crypto.h"
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#include "sysemu/cryptodev-vhost.h"
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#include "chardev/char-fe.h"
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2018-03-01 16:46:29 +03:00
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#include "sysemu/cryptodev-vhost-user.h"
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2020-09-03 23:43:22 +03:00
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#include "qom/object.h"
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2018-03-01 16:46:28 +03:00
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/**
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* @TYPE_CRYPTODEV_BACKEND_VHOST_USER:
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* name of backend that uses vhost user server
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*/
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#define TYPE_CRYPTODEV_BACKEND_VHOST_USER "cryptodev-vhost-user"
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2020-09-16 21:25:19 +03:00
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OBJECT_DECLARE_SIMPLE_TYPE(CryptoDevBackendVhostUser, CRYPTODEV_BACKEND_VHOST_USER)
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2018-03-01 16:46:28 +03:00
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2020-09-03 23:43:22 +03:00
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struct CryptoDevBackendVhostUser {
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2018-03-01 16:46:28 +03:00
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CryptoDevBackend parent_obj;
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2019-03-08 17:04:45 +03:00
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VhostUserState vhost_user;
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2018-03-01 16:46:28 +03:00
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CharBackend chr;
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char *chr_name;
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bool opened;
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CryptoDevBackendVhost *vhost_crypto[MAX_CRYPTO_QUEUE_NUM];
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2020-09-03 23:43:22 +03:00
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};
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2018-03-01 16:46:28 +03:00
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static int
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cryptodev_vhost_user_running(
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CryptoDevBackendVhost *crypto)
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{
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return crypto ? 1 : 0;
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}
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2018-03-01 16:46:29 +03:00
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CryptoDevBackendVhost *
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cryptodev_vhost_user_get_vhost(
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CryptoDevBackendClient *cc,
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CryptoDevBackend *b,
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uint16_t queue)
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{
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CryptoDevBackendVhostUser *s =
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CRYPTODEV_BACKEND_VHOST_USER(b);
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assert(cc->type == CRYPTODEV_BACKEND_TYPE_VHOST_USER);
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assert(queue < MAX_CRYPTO_QUEUE_NUM);
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return s->vhost_crypto[queue];
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}
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2018-03-01 16:46:28 +03:00
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static void cryptodev_vhost_user_stop(int queues,
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CryptoDevBackendVhostUser *s)
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{
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size_t i;
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for (i = 0; i < queues; i++) {
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if (!cryptodev_vhost_user_running(s->vhost_crypto[i])) {
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continue;
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}
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cryptodev_vhost_cleanup(s->vhost_crypto[i]);
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s->vhost_crypto[i] = NULL;
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}
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}
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static int
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cryptodev_vhost_user_start(int queues,
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CryptoDevBackendVhostUser *s)
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{
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CryptoDevBackendVhostOptions options;
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CryptoDevBackend *b = CRYPTODEV_BACKEND(s);
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int max_queues;
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size_t i;
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for (i = 0; i < queues; i++) {
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if (cryptodev_vhost_user_running(s->vhost_crypto[i])) {
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continue;
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}
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2019-03-08 17:04:45 +03:00
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options.opaque = &s->vhost_user;
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2018-03-01 16:46:28 +03:00
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options.backend_type = VHOST_BACKEND_TYPE_USER;
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options.cc = b->conf.peers.ccs[i];
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s->vhost_crypto[i] = cryptodev_vhost_init(&options);
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if (!s->vhost_crypto[i]) {
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error_report("failed to init vhost_crypto for queue %zu", i);
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goto err;
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}
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if (i == 0) {
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max_queues =
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cryptodev_vhost_get_max_queues(s->vhost_crypto[i]);
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if (queues > max_queues) {
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error_report("you are asking more queues than supported: %d",
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max_queues);
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goto err;
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}
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}
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}
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return 0;
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err:
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cryptodev_vhost_user_stop(i + 1, s);
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return -1;
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}
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static Chardev *
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cryptodev_vhost_claim_chardev(CryptoDevBackendVhostUser *s,
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Error **errp)
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{
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Chardev *chr;
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if (s->chr_name == NULL) {
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error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
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"chardev", "a valid character device");
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return NULL;
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}
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chr = qemu_chr_find(s->chr_name);
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if (chr == NULL) {
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error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
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"Device '%s' not found", s->chr_name);
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return NULL;
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}
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return chr;
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}
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chardev: Use QEMUChrEvent enum in IOEventHandler typedef
The Chardev events are listed in the QEMUChrEvent enum.
By using the enum in the IOEventHandler typedef we:
- make the IOEventHandler type more explicit (this handler
process out-of-band information, while the IOReadHandler
is in-band),
- help static code analyzers.
This patch was produced with the following spatch script:
@match@
expression backend, opaque, context, set_open;
identifier fd_can_read, fd_read, fd_event, be_change;
@@
qemu_chr_fe_set_handlers(backend, fd_can_read, fd_read, fd_event,
be_change, opaque, context, set_open);
@depends on match@
identifier opaque, event;
identifier match.fd_event;
@@
static
-void fd_event(void *opaque, int event)
+void fd_event(void *opaque, QEMUChrEvent event)
{
...
}
Then the typedef was modified manually in
include/chardev/char-fe.h.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20191218172009.8868-15-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-12-18 20:20:09 +03:00
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static void cryptodev_vhost_user_event(void *opaque, QEMUChrEvent event)
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2018-03-01 16:46:28 +03:00
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{
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CryptoDevBackendVhostUser *s = opaque;
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CryptoDevBackend *b = CRYPTODEV_BACKEND(s);
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int queues = b->conf.peers.queues;
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assert(queues < MAX_CRYPTO_QUEUE_NUM);
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switch (event) {
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case CHR_EVENT_OPENED:
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if (cryptodev_vhost_user_start(queues, s) < 0) {
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exit(1);
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}
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b->ready = true;
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break;
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case CHR_EVENT_CLOSED:
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b->ready = false;
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cryptodev_vhost_user_stop(queues, s);
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break;
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2019-12-18 20:20:02 +03:00
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case CHR_EVENT_BREAK:
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case CHR_EVENT_MUX_IN:
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case CHR_EVENT_MUX_OUT:
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/* Ignore */
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break;
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2018-03-01 16:46:28 +03:00
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}
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}
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static void cryptodev_vhost_user_init(
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CryptoDevBackend *backend, Error **errp)
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{
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int queues = backend->conf.peers.queues;
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size_t i;
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Error *local_err = NULL;
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Chardev *chr;
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CryptoDevBackendClient *cc;
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CryptoDevBackendVhostUser *s =
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CRYPTODEV_BACKEND_VHOST_USER(backend);
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chr = cryptodev_vhost_claim_chardev(s, &local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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s->opened = true;
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for (i = 0; i < queues; i++) {
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cc = cryptodev_backend_new_client(
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"cryptodev-vhost-user", NULL);
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cc->info_str = g_strdup_printf("cryptodev-vhost-user%zu to %s ",
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i, chr->label);
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cc->queue_index = i;
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2018-03-01 16:46:29 +03:00
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cc->type = CRYPTODEV_BACKEND_TYPE_VHOST_USER;
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2018-03-01 16:46:28 +03:00
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backend->conf.peers.ccs[i] = cc;
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if (i == 0) {
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error: Eliminate error_propagate() with Coccinelle, part 1
When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away. Convert
if (!foo(..., &err)) {
...
error_propagate(errp, err);
...
return ...
}
to
if (!foo(..., errp)) {
...
...
return ...
}
where nothing else needs @err. Coccinelle script:
@rule1 forall@
identifier fun, err, errp, lbl;
expression list args, args2;
binary operator op;
constant c1, c2;
symbol false;
@@
if (
(
- fun(args, &err, args2)
+ fun(args, errp, args2)
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- !fun(args, &err, args2)
+ !fun(args, errp, args2)
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- fun(args, &err, args2) op c1
+ fun(args, errp, args2) op c1
)
)
{
... when != err
when != lbl:
when strict
- error_propagate(errp, err);
... when != err
(
return;
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return c2;
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return false;
)
}
@rule2 forall@
identifier fun, err, errp, lbl;
expression list args, args2;
expression var;
binary operator op;
constant c1, c2;
symbol false;
@@
- var = fun(args, &err, args2);
+ var = fun(args, errp, args2);
... when != err
if (
(
var
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!var
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var op c1
)
)
{
... when != err
when != lbl:
when strict
- error_propagate(errp, err);
... when != err
(
return;
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return c2;
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return false;
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return var;
)
}
@depends on rule1 || rule2@
identifier err;
@@
- Error *err = NULL;
... when != err
Not exactly elegant, I'm afraid.
The "when != lbl:" is necessary to avoid transforming
if (fun(args, &err)) {
goto out
}
...
out:
error_propagate(errp, err);
even though other paths to label out still need the error_propagate().
For an actual example, see sclp_realize().
Without the "when strict", Coccinelle transforms vfio_msix_setup(),
incorrectly. I don't know what exactly "when strict" does, only that
it helps here.
The match of return is narrower than what I want, but I can't figure
out how to express "return where the operand doesn't use @err". For
an example where it's too narrow, see vfio_intx_enable().
Silently fails to convert hw/arm/armsse.c, because Coccinelle gets
confused by ARMSSE being used both as typedef and function-like macro
there. Converted manually.
Line breaks tidied up manually. One nested declaration of @local_err
deleted manually. Preexisting unwanted blank line dropped in
hw/riscv/sifive_e.c.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 19:06:02 +03:00
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if (!qemu_chr_fe_init(&s->chr, chr, errp)) {
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2018-03-01 16:46:28 +03:00
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return;
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}
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}
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}
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2019-03-08 17:04:45 +03:00
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if (!vhost_user_init(&s->vhost_user, &s->chr, errp)) {
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2018-05-24 13:33:33 +03:00
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return;
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}
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2018-03-01 16:46:28 +03:00
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qemu_chr_fe_set_handlers(&s->chr, NULL, NULL,
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cryptodev_vhost_user_event, NULL, s, NULL, true);
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backend->conf.crypto_services =
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1u << VIRTIO_CRYPTO_SERVICE_CIPHER |
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1u << VIRTIO_CRYPTO_SERVICE_HASH |
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1u << VIRTIO_CRYPTO_SERVICE_MAC;
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backend->conf.cipher_algo_l = 1u << VIRTIO_CRYPTO_CIPHER_AES_CBC;
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backend->conf.hash_algo = 1u << VIRTIO_CRYPTO_HASH_SHA1;
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2018-03-01 16:46:31 +03:00
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backend->conf.max_size = UINT64_MAX;
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backend->conf.max_cipher_key_len = VHOST_USER_MAX_CIPHER_KEY_LEN;
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backend->conf.max_auth_key_len = VHOST_USER_MAX_AUTH_KEY_LEN;
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2018-03-01 16:46:28 +03:00
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}
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static int64_t cryptodev_vhost_user_sym_create_session(
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CryptoDevBackend *backend,
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CryptoDevBackendSymSessionInfo *sess_info,
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uint32_t queue_index, Error **errp)
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{
|
2018-03-01 16:46:30 +03:00
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CryptoDevBackendClient *cc =
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backend->conf.peers.ccs[queue_index];
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CryptoDevBackendVhost *vhost_crypto;
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uint64_t session_id = 0;
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int ret;
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vhost_crypto = cryptodev_vhost_user_get_vhost(cc, backend, queue_index);
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if (vhost_crypto) {
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struct vhost_dev *dev = &(vhost_crypto->dev);
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ret = dev->vhost_ops->vhost_crypto_create_session(dev,
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sess_info,
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&session_id);
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if (ret < 0) {
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return -1;
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} else {
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return session_id;
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}
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}
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return -1;
|
2018-03-01 16:46:28 +03:00
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}
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|
2022-06-11 09:42:43 +03:00
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static int64_t cryptodev_vhost_user_create_session(
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CryptoDevBackend *backend,
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|
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CryptoDevBackendSessionInfo *sess_info,
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|
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uint32_t queue_index, Error **errp)
|
|
|
|
{
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uint32_t op_code = sess_info->op_code;
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CryptoDevBackendSymSessionInfo *sym_sess_info;
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switch (op_code) {
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case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION:
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case VIRTIO_CRYPTO_HASH_CREATE_SESSION:
|
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|
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case VIRTIO_CRYPTO_MAC_CREATE_SESSION:
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|
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case VIRTIO_CRYPTO_AEAD_CREATE_SESSION:
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|
sym_sess_info = &sess_info->u.sym_sess_info;
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|
return cryptodev_vhost_user_sym_create_session(backend, sym_sess_info,
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|
|
queue_index, errp);
|
|
|
|
default:
|
|
|
|
error_setg(errp, "Unsupported opcode :%" PRIu32 "",
|
|
|
|
sess_info->op_code);
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cryptodev_vhost_user_close_session(
|
2018-03-01 16:46:28 +03:00
|
|
|
CryptoDevBackend *backend,
|
|
|
|
uint64_t session_id,
|
|
|
|
uint32_t queue_index, Error **errp)
|
|
|
|
{
|
2018-03-01 16:46:30 +03:00
|
|
|
CryptoDevBackendClient *cc =
|
|
|
|
backend->conf.peers.ccs[queue_index];
|
|
|
|
CryptoDevBackendVhost *vhost_crypto;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
vhost_crypto = cryptodev_vhost_user_get_vhost(cc, backend, queue_index);
|
|
|
|
if (vhost_crypto) {
|
|
|
|
struct vhost_dev *dev = &(vhost_crypto->dev);
|
|
|
|
ret = dev->vhost_ops->vhost_crypto_close_session(dev,
|
|
|
|
session_id);
|
|
|
|
if (ret < 0) {
|
|
|
|
return -1;
|
|
|
|
} else {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return -1;
|
2018-03-01 16:46:28 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
static void cryptodev_vhost_user_cleanup(
|
|
|
|
CryptoDevBackend *backend,
|
|
|
|
Error **errp)
|
|
|
|
{
|
|
|
|
CryptoDevBackendVhostUser *s =
|
|
|
|
CRYPTODEV_BACKEND_VHOST_USER(backend);
|
|
|
|
size_t i;
|
|
|
|
int queues = backend->conf.peers.queues;
|
|
|
|
CryptoDevBackendClient *cc;
|
|
|
|
|
|
|
|
cryptodev_vhost_user_stop(queues, s);
|
|
|
|
|
|
|
|
for (i = 0; i < queues; i++) {
|
|
|
|
cc = backend->conf.peers.ccs[i];
|
|
|
|
if (cc) {
|
|
|
|
cryptodev_backend_free_client(cc);
|
|
|
|
backend->conf.peers.ccs[i] = NULL;
|
|
|
|
}
|
|
|
|
}
|
2018-05-24 13:33:33 +03:00
|
|
|
|
2019-03-08 17:04:45 +03:00
|
|
|
vhost_user_cleanup(&s->vhost_user);
|
2018-03-01 16:46:28 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
static void cryptodev_vhost_user_set_chardev(Object *obj,
|
|
|
|
const char *value, Error **errp)
|
|
|
|
{
|
|
|
|
CryptoDevBackendVhostUser *s =
|
|
|
|
CRYPTODEV_BACKEND_VHOST_USER(obj);
|
|
|
|
|
|
|
|
if (s->opened) {
|
2022-10-12 18:37:59 +03:00
|
|
|
error_setg(errp, "Property 'chardev' can no longer be set");
|
2018-03-01 16:46:28 +03:00
|
|
|
} else {
|
|
|
|
g_free(s->chr_name);
|
|
|
|
s->chr_name = g_strdup(value);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *
|
|
|
|
cryptodev_vhost_user_get_chardev(Object *obj, Error **errp)
|
|
|
|
{
|
|
|
|
CryptoDevBackendVhostUser *s =
|
|
|
|
CRYPTODEV_BACKEND_VHOST_USER(obj);
|
|
|
|
Chardev *chr = qemu_chr_fe_get_driver(&s->chr);
|
|
|
|
|
|
|
|
if (chr && chr->label) {
|
|
|
|
return g_strdup(chr->label);
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void cryptodev_vhost_user_finalize(Object *obj)
|
|
|
|
{
|
|
|
|
CryptoDevBackendVhostUser *s =
|
|
|
|
CRYPTODEV_BACKEND_VHOST_USER(obj);
|
|
|
|
|
|
|
|
qemu_chr_fe_deinit(&s->chr, false);
|
|
|
|
|
|
|
|
g_free(s->chr_name);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
cryptodev_vhost_user_class_init(ObjectClass *oc, void *data)
|
|
|
|
{
|
|
|
|
CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_CLASS(oc);
|
|
|
|
|
|
|
|
bc->init = cryptodev_vhost_user_init;
|
|
|
|
bc->cleanup = cryptodev_vhost_user_cleanup;
|
2022-06-11 09:42:43 +03:00
|
|
|
bc->create_session = cryptodev_vhost_user_create_session;
|
|
|
|
bc->close_session = cryptodev_vhost_user_close_session;
|
|
|
|
bc->do_op = NULL;
|
2020-09-22 01:10:22 +03:00
|
|
|
|
|
|
|
object_class_property_add_str(oc, "chardev",
|
|
|
|
cryptodev_vhost_user_get_chardev,
|
|
|
|
cryptodev_vhost_user_set_chardev);
|
|
|
|
|
2018-03-01 16:46:28 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
static const TypeInfo cryptodev_vhost_user_info = {
|
|
|
|
.name = TYPE_CRYPTODEV_BACKEND_VHOST_USER,
|
|
|
|
.parent = TYPE_CRYPTODEV_BACKEND,
|
|
|
|
.class_init = cryptodev_vhost_user_class_init,
|
|
|
|
.instance_finalize = cryptodev_vhost_user_finalize,
|
|
|
|
.instance_size = sizeof(CryptoDevBackendVhostUser),
|
|
|
|
};
|
|
|
|
|
|
|
|
static void
|
|
|
|
cryptodev_vhost_user_register_types(void)
|
|
|
|
{
|
|
|
|
type_register_static(&cryptodev_vhost_user_info);
|
|
|
|
}
|
|
|
|
|
|
|
|
type_init(cryptodev_vhost_user_register_types);
|