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Re: [Qemu-devel] [PATCH v3 1/4] cryptodev: add vhost-user as a new crypt
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH v3 1/4] cryptodev: add vhost-user as a new cryptodev backend |
Date: |
Tue, 16 Jan 2018 18:41:22 +0200 |
On Tue, Jan 16, 2018 at 10:06:50PM +0800, Jay Zhou wrote:
> From: Gonglei <address@hidden>
>
> Usage:
> -chardev socket,id=charcrypto0,path=/path/to/your/socket
> -object cryptodev-vhost-user,id=cryptodev0,chardev=charcrypto0
> -device virtio-crypto-pci,id=crypto0,cryptodev=cryptodev0
>
> Signed-off-by: Gonglei <address@hidden>
> Signed-off-by: Longpeng(Mike) <address@hidden>
> Signed-off-by: Jay Zhou <address@hidden>
> ---
> backends/Makefile.objs | 4 +
> backends/cryptodev-vhost-user.c | 333
> +++++++++++++++++++++++++++++++++++++++
> backends/cryptodev-vhost.c | 73 +++++++++
> include/sysemu/cryptodev-vhost.h | 154 ++++++++++++++++++
> qemu-options.hx | 21 +++
> vl.c | 4 +
> 6 files changed, 589 insertions(+)
> create mode 100644 backends/cryptodev-vhost-user.c
> create mode 100644 backends/cryptodev-vhost.c
> create mode 100644 include/sysemu/cryptodev-vhost.h
>
> diff --git a/backends/Makefile.objs b/backends/Makefile.objs
> index 0400799..9e1fb76 100644
> --- a/backends/Makefile.objs
> +++ b/backends/Makefile.objs
> @@ -8,3 +8,7 @@ common-obj-$(CONFIG_LINUX) += hostmem-file.o
>
> common-obj-y += cryptodev.o
> common-obj-y += cryptodev-builtin.o
> +
> +ifeq ($(CONFIG_VIRTIO),y)
> +common-obj-$(CONFIG_LINUX) += cryptodev-vhost.o cryptodev-vhost-user.o
> +endif
Shouldn't this depend on CONFIG_VHOST_USER?
> diff --git a/backends/cryptodev-vhost-user.c b/backends/cryptodev-vhost-user.c
> new file mode 100644
> index 0000000..4e63ece
> --- /dev/null
> +++ b/backends/cryptodev-vhost-user.c
> @@ -0,0 +1,333 @@
> +/*
> + * QEMU Cryptodev backend for QEMU cipher APIs
> + *
> + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
> + *
> + * Authors:
> + * Gonglei <address@hidden>
> + *
> + * 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 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 "hw/boards.h"
> +#include "qapi/error.h"
> +#include "qapi/qmp/qerror.h"
> +#include "qemu/error-report.h"
> +#include "standard-headers/linux/virtio_crypto.h"
> +#include "sysemu/cryptodev-vhost.h"
> +#include "chardev/char-fe.h"
> +
> +
> +/**
> + * @TYPE_CRYPTODEV_BACKEND_VHOST_USER:
> + * name of backend that uses vhost user server
> + */
> +#define TYPE_CRYPTODEV_BACKEND_VHOST_USER "cryptodev-vhost-user"
> +
> +#define CRYPTODEV_BACKEND_VHOST_USER(obj) \
> + OBJECT_CHECK(CryptoDevBackendVhostUser, \
> + (obj), TYPE_CRYPTODEV_BACKEND_VHOST_USER)
> +
> +
> +typedef struct CryptoDevBackendVhostUser {
> + CryptoDevBackend parent_obj;
> +
> + CharBackend chr;
> + char *chr_name;
> + bool opened;
> + CryptoDevBackendVhost *vhost_crypto[MAX_CRYPTO_QUEUE_NUM];
> +} CryptoDevBackendVhostUser;
> +
> +static int
> +cryptodev_vhost_user_running(
> + CryptoDevBackendVhost *crypto)
> +{
> + return crypto ? 1 : 0;
> +}
> +
> +static void cryptodev_vhost_user_stop(int queues,
> + CryptoDevBackendVhostUser *s)
> +{
> + size_t i;
> +
> + for (i = 0; i < queues; i++) {
> + if (!cryptodev_vhost_user_running(s->vhost_crypto[i])) {
> + continue;
> + }
> +
> + if (s->vhost_crypto) {
> + cryptodev_vhost_cleanup(s->vhost_crypto[i]);
> + s->vhost_crypto[i] = NULL;
> + }
> + }
> +}
> +
> +static int
> +cryptodev_vhost_user_start(int queues,
> + CryptoDevBackendVhostUser *s)
> +{
> + CryptoDevBackendVhostOptions options;
> + CryptoDevBackend *b = CRYPTODEV_BACKEND(s);
> + int max_queues;
> + size_t i;
> +
> + for (i = 0; i < queues; i++) {
> + if (cryptodev_vhost_user_running(s->vhost_crypto[i])) {
> + continue;
> + }
> +
> + options.opaque = &s->chr;
> + options.backend_type = VHOST_BACKEND_TYPE_USER;
> + options.cc = b->conf.peers.ccs[i];
> + s->vhost_crypto[i] = cryptodev_vhost_init(&options);
> + if (!s->vhost_crypto[i]) {
> + error_report("failed to init vhost_crypto for queue %lu", i);
> + goto err;
> + }
> +
> + if (i == 0) {
> + max_queues =
> + cryptodev_vhost_get_max_queues(s->vhost_crypto[i]);
> + if (queues > max_queues) {
> + error_report("you are asking more queues than supported: %d",
> + max_queues);
> + goto err;
> + }
> + }
> + }
> +
> + return 0;
> +
> +err:
> + cryptodev_vhost_user_stop(i + 1, s);
> + return -1;
> +}
> +
> +static Chardev *
> +cryptodev_vhost_claim_chardev(CryptoDevBackendVhostUser *s,
> + Error **errp)
> +{
> + Chardev *chr;
> +
> + if (s->chr_name == NULL) {
> + error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
> + "chardev", "a valid character device");
> + return NULL;
> + }
> +
> + chr = qemu_chr_find(s->chr_name);
> + if (chr == NULL) {
> + error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
> + "Device '%s' not found", s->chr_name);
> + return NULL;
> + }
> +
> + return chr;
> +}
> +
> +static void cryptodev_vhost_user_event(void *opaque, int event)
> +{
> + CryptoDevBackendVhostUser *s = opaque;
> + CryptoDevBackend *b = CRYPTODEV_BACKEND(s);
> + Error *err = NULL;
> + int queues = b->conf.peers.queues;
> +
> + assert(queues < MAX_CRYPTO_QUEUE_NUM);
> +
> + switch (event) {
> + case CHR_EVENT_OPENED:
> + if (cryptodev_vhost_user_start(queues, s) < 0) {
> + exit(1);
> + }
> + b->ready = true;
> + break;
> + case CHR_EVENT_CLOSED:
> + b->ready = false;
> + cryptodev_vhost_user_stop(queues, s);
> + break;
> + }
> +
> + if (err) {
> + error_report_err(err);
> + }
> +}
> +
> +static void cryptodev_vhost_user_init(
> + CryptoDevBackend *backend, Error **errp)
> +{
> + int queues = backend->conf.peers.queues;
> + size_t i;
> + Error *local_err = NULL;
> + Chardev *chr;
> + CryptoDevBackendClient *cc;
> + CryptoDevBackendVhostUser *s =
> + CRYPTODEV_BACKEND_VHOST_USER(backend);
> +
> + chr = cryptodev_vhost_claim_chardev(s, &local_err);
> + if (local_err) {
> + error_propagate(errp, local_err);
> + return;
> + }
> +
> + s->opened = true;
> +
> + for (i = 0; i < queues; i++) {
> + cc = cryptodev_backend_new_client(
> + "cryptodev-vhost-user", NULL);
> + cc->info_str = g_strdup_printf("cryptodev-vhost-user%lu to %s ",
> + i, chr->label);
> + cc->queue_index = i;
> +
> + backend->conf.peers.ccs[i] = cc;
> +
> + if (i == 0) {
> + if (!qemu_chr_fe_init(&s->chr, chr, &local_err)) {
> + error_propagate(errp, local_err);
> + return;
> + }
> + }
> + }
> +
> + qemu_chr_fe_set_handlers(&s->chr, NULL, NULL,
> + cryptodev_vhost_user_event, NULL, s, NULL, true);
> +
> + backend->conf.crypto_services =
> + 1u << VIRTIO_CRYPTO_SERVICE_CIPHER |
> + 1u << VIRTIO_CRYPTO_SERVICE_HASH |
> + 1u << VIRTIO_CRYPTO_SERVICE_MAC;
> + backend->conf.cipher_algo_l = 1u << VIRTIO_CRYPTO_CIPHER_AES_CBC;
> + backend->conf.hash_algo = 1u << VIRTIO_CRYPTO_HASH_SHA1;
> +}
> +
> +static int64_t cryptodev_vhost_user_sym_create_session(
> + CryptoDevBackend *backend,
> + CryptoDevBackendSymSessionInfo *sess_info,
> + uint32_t queue_index, Error **errp)
> +{
> + return 0;
> +}
> +
> +static int cryptodev_vhost_user_sym_close_session(
> + CryptoDevBackend *backend,
> + uint64_t session_id,
> + uint32_t queue_index, Error **errp)
> +{
> + return 0;
> +}
> +
> +static int cryptodev_vhost_user_sym_operation(
> + CryptoDevBackend *backend,
> + CryptoDevBackendSymOpInfo *op_info,
> + uint32_t queue_index, Error **errp)
> +{
> + return VIRTIO_CRYPTO_OK;
> +}
> +
> +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;
> + }
> + }
> +}
> +
> +static void cryptodev_vhost_user_set_chardev(Object *obj,
> + const char *value, Error **errp)
> +{
> + CryptoDevBackendVhostUser *s =
> + CRYPTODEV_BACKEND_VHOST_USER(obj);
> +
> + if (s->opened) {
> + error_setg(errp, QERR_PERMISSION_DENIED);
> + } 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_instance_int(Object *obj)
> +{
> + object_property_add_str(obj, "chardev",
> + cryptodev_vhost_user_get_chardev,
> + cryptodev_vhost_user_set_chardev,
> + 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;
> + bc->create_session = cryptodev_vhost_user_sym_create_session;
> + bc->close_session = cryptodev_vhost_user_sym_close_session;
> + bc->do_sym_op = cryptodev_vhost_user_sym_operation;
> +}
> +
> +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_init = cryptodev_vhost_user_instance_int,
> + .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);
> diff --git a/backends/cryptodev-vhost.c b/backends/cryptodev-vhost.c
> new file mode 100644
> index 0000000..2c7df3f
> --- /dev/null
> +++ b/backends/cryptodev-vhost.c
> @@ -0,0 +1,73 @@
> +/*
> + * QEMU Cryptodev backend for QEMU cipher APIs
> + *
> + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
> + *
> + * Authors:
> + * Gonglei <address@hidden>
> + * Jay Zhou <address@hidden>
> + *
> + * 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 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 "qapi/error.h"
> +#include "qapi/qmp/qerror.h"
> +#include "sysemu/cryptodev-vhost.h"
> +
> +
> +uint64_t
> +cryptodev_vhost_get_max_queues(
> + CryptoDevBackendVhost *crypto)
> +{
> + return crypto->dev.max_queues;
> +}
> +
> +void cryptodev_vhost_cleanup(CryptoDevBackendVhost *crypto)
> +{
> + vhost_dev_cleanup(&crypto->dev);
> + g_free(crypto);
> +}
> +
> +struct CryptoDevBackendVhost *
> +cryptodev_vhost_init(
> + CryptoDevBackendVhostOptions *options)
> +{
> + int r;
> + CryptoDevBackendVhost *crypto;
> +
> + crypto = g_new(CryptoDevBackendVhost, 1);
> + crypto->dev.max_queues = 1;
> + crypto->dev.nvqs = 1;
> + crypto->dev.vqs = crypto->vqs;
> +
> + crypto->cc = options->cc;
> +
> + crypto->dev.protocol_features = 0;
> + crypto->backend = -1;
> +
> + /* vhost-user needs vq_index to initiate a specific queue pair */
> + crypto->dev.vq_index = crypto->cc->queue_index * crypto->dev.nvqs;
> +
> + r = vhost_dev_init(&crypto->dev, options->opaque, options->backend_type,
> 0);
> + if (r < 0) {
> + goto fail;
> + }
> +
> + return crypto;
> +fail:
> + g_free(crypto);
> + return NULL;
> +}
> diff --git a/include/sysemu/cryptodev-vhost.h
> b/include/sysemu/cryptodev-vhost.h
> new file mode 100644
> index 0000000..fb26b86
> --- /dev/null
> +++ b/include/sysemu/cryptodev-vhost.h
> @@ -0,0 +1,154 @@
> +/*
> + * QEMU Crypto Device Common Vhost Implement
> + *
> + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
> + *
> + * Authors:
> + * Gonglei <address@hidden>
> + * Jay Zhou <address@hidden>
> + *
> + * 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 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/>.
> + *
> + */
> +#ifndef CRYPTODEV_VHOST_H
> +#define CRYPTODEV_VHOST_H
> +
> +#include "qemu-common.h"
> +#include "hw/virtio/vhost.h"
> +#include "hw/virtio/vhost-backend.h"
> +#include "chardev/char.h"
> +
> +#include "sysemu/cryptodev.h"
> +
> +
> +typedef struct CryptoDevBackendVhostOptions {
> + VhostBackendType backend_type;
> + void *opaque;
> + int total_queues;
> + CryptoDevBackendClient *cc;
> +} CryptoDevBackendVhostOptions;
> +
> +typedef struct CryptoDevBackendVhost {
> + struct vhost_dev dev;
> + struct vhost_virtqueue vqs[1];
> + int backend;
> + CryptoDevBackendClient *cc;
> +} CryptoDevBackendVhost;
> +
> +/**
> + * cryptodev_vhost_get_max_queues:
> + * @crypto: the cryptodev backend common vhost object
> + *
> + * Get the maximum queue number of @crypto.
> + *
> + *
> + * Returns: the maximum queue number
> + */
> +uint64_t
> +cryptodev_vhost_get_max_queues(
> + CryptoDevBackendVhost *crypto);
> +
> +
> +/**
> + * cryptodev_vhost_init:
> + * @options: the common vhost object's option
> + *
> + * Creates a new cryptodev backend common vhost object
> + *
> + ** The returned object must be released with
> + * cryptodev_vhost_cleanup() when no
> + * longer required
> + *
> + * Returns: the cryptodev backend common vhost object
> + */
> +struct CryptoDevBackendVhost *
> +cryptodev_vhost_init(
> + CryptoDevBackendVhostOptions *options);
> +
> +/**
> + * cryptodev_vhost_cleanup:
> + * @crypto: the cryptodev backend common vhost object
> + *
> + * Clean the resouce associated with @crypto that realizaed
> + * by cryptodev_vhost_init()
> + *
> + */
> +void cryptodev_vhost_cleanup(
> + CryptoDevBackendVhost *crypto);
> +
> +/**
> + * cryptodev_get_vhost:
> + * @cc: the client object for each queue
> + * @b: the cryptodev backend common vhost object
> + * @queue: the cryptodev backend queue index
> + *
> + * Gets a new cryptodev backend common vhost object based on
> + * @b and @queue
> + *
> + * Returns: the cryptodev backend common vhost object
> + */
> +CryptoDevBackendVhost *
> +cryptodev_get_vhost(CryptoDevBackendClient *cc,
> + CryptoDevBackend *b,
> + uint16_t queue);
> +/**
> + * cryptodev_vhost_start:
> + * @dev: the virtio crypto object
> + * @total_queues: the total count of queue
> + *
> + * Starts the vhost crypto logic
> + *
> + * Returns: 0 for success, negative for errors
> + */
> +int cryptodev_vhost_start(VirtIODevice *dev, int total_queues);
> +
> +/**
> + * cryptodev_vhost_stop:
> + * @dev: the virtio crypto object
> + * @total_queues: the total count of queue
> + *
> + * Stops the vhost crypto logic
> + *
> + */
> +void cryptodev_vhost_stop(VirtIODevice *dev, int total_queues);
> +
> +/**
> + * cryptodev_vhost_virtqueue_mask:
> + * @dev: the virtio crypto object
> + * @queue: the cryptodev backend queue index
> + * @idx: the virtqueue index
> + * @mask: mask or not (true or false)
> + *
> + * Mask/unmask events for @idx virtqueue on @dev device
> + *
> + */
> +void cryptodev_vhost_virtqueue_mask(VirtIODevice *dev,
> + int queue,
> + int idx, bool mask);
> +
> +/**
> + * cryptodev_vhost_virtqueue_pending:
> + * @dev: the virtio crypto object
> + * @queue: the cryptodev backend queue index
> + * @idx: the virtqueue index
> + *
> + * Test and clear event pending status for @idx virtqueue on @dev device.
> + * Should be called after unmask to avoid losing events.
> + *
> + * Returns: true for success, false for errors
> + */
> +bool cryptodev_vhost_virtqueue_pending(VirtIODevice *dev,
> + int queue, int idx);
> +
> +#endif /* CRYPTODEV_VHOST_H */
> diff --git a/qemu-options.hx b/qemu-options.hx
> index 678181c..97db5bc 100644
> --- a/qemu-options.hx
> +++ b/qemu-options.hx
> @@ -4170,6 +4170,27 @@ which specify the queue number of cryptodev backend,
> the default of
> [...]
> @end example
>
> address@hidden -object
> cryptodev-vhost-user,address@hidden,address@hidden,address@hidden
> +
> +Creates a vhost-user cryptodev backend, backed by a chardev @var{chardevid}.
> +The @var{id} parameter is a unique ID that will be used to reference this
> +cryptodev backend from the @option{virtio-crypto} device.
> +The chardev should be a unix domain socket backed one. The vhost-user uses
> +a specifically defined protocol to pass vhost ioctl replacement messages
> +to an application on the other end of the socket.
> +The @var{queues} parameter is optional, which specify the queue number
> +of cryptodev backend for multiqueue vhost-user, the default of @var{queues}
> is 1.
> +
> address@hidden
> +
> + # qemu-system-x86_64 \
> + [...] \
> + -chardev socket,id=chardev0,path=/path/to/socket \
> + -object cryptodev-vhost-user,id=cryptodev0,chardev=chardev0 \
> + -device virtio-crypto-pci,id=crypto0,cryptodev=cryptodev0 \
> + [...]
> address@hidden example
> +
> @item -object
> secret,address@hidden,address@hidden,address@hidden|base64}[,address@hidden,address@hidden
> @item -object
> secret,address@hidden,address@hidden,address@hidden|base64}[,address@hidden,address@hidden
>
> diff --git a/vl.c b/vl.c
> index f1c52fe..3e9d86f 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -2867,6 +2867,10 @@ static bool object_create_initial(const char *type)
> return false;
> }
>
> + if (g_str_equal(type, "cryptodev-vhost-user")) {
> + return false;
> + }
> +
> /*
> * return false for concrete netfilters since
> * they depend on netdevs already existing
> --
> 1.8.3.1
>