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Sat, 15 Jul 2017 18:21:34 +0800 (CST) Received: from localhost (10.177.18.62) by DGGEML401-HUB.china.huawei.com (10.3.17.32) with Microsoft SMTP Server id 14.3.301.0; Sat, 15 Jul 2017 18:21:23 +0800 From: Gonglei To: Date: Sat, 15 Jul 2017 18:21:08 +0800 Message-ID: <1500114070-181004-2-git-send-email-arei.gonglei@huawei.com> X-Mailer: git-send-email 2.8.2.windows.1 In-Reply-To: <1500114070-181004-1-git-send-email-arei.gonglei@huawei.com> References: <1500114070-181004-1-git-send-email-arei.gonglei@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.18.62] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020201.5969ECB0.00D5, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 8d26af92761dbb4982f2d6525254dd0a X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 45.249.212.189 Subject: [Qemu-devel] [RFC 1/3] cryptodev: add vhost-user as a new cryptodev backend X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: pasic@linux.vnet.ibm.com, weidong.huang@huawei.com, mst@redhat.com, xin.zeng@intel.com, linqiangmin@huawei.com, Gonglei , roy.fan.zhang@intel.com, stefanha@redhat.com, jianjay.zhou@huawei.com, marcandre.lureau@redhat.com, longpeng2@huawei.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP 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 Signed-off-by: Longpeng(Mike) Signed-off-by: Zhoujian --- backends/Makefile.objs | 1 + 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, 586 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..a415401 100644 --- a/backends/Makefile.objs +++ b/backends/Makefile.objs @@ -8,3 +8,4 @@ common-obj-$(CONFIG_LINUX) += hostmem-file.o common-obj-y += cryptodev.o common-obj-y += cryptodev-builtin.o +common-obj-y += cryptodev-vhost.o cryptodev-vhost-user.o 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 + * + * 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 . + * + */ + +#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..111e428 --- /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 + * Jian Zhou + * + * 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 . + * + */ + +#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..76721d0 --- /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 + * Jian Zhou + * + * 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 . + * + */ +#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 2cc70b9..24df63b 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4340,6 +4340,27 @@ which specify the queue number of cryptodev backend, the default of [...] @end example +@item -object cryptodev-vhost-user,id=@var{id},chardev=@var{chardevid}[,queues=@var{queues}] + +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. + +@example + + # 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 \ + [...] +@end example + @item -object secret,id=@var{id},data=@var{string},format=@var{raw|base64}[,keyid=@var{secretid},iv=@var{string}] @item -object secret,id=@var{id},file=@var{filename},format=@var{raw|base64}[,keyid=@var{secretid},iv=@var{string}] diff --git a/vl.c b/vl.c index fb6b2ef..4d96ea7 100644 --- a/vl.c +++ b/vl.c @@ -2811,6 +2811,10 @@ 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