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https://github.com/Motorhead1991/qemu.git
synced 2025-08-03 15:53:54 -06:00
cryptodev: add vhost support
Impliment the vhost-crypto's funtions, such as startup, stop and notification etc. Introduce an enum QCryptoCryptoDevBackendOptionsType in order to identify the cryptodev vhost backend is vhost-user or vhost-kernel-module (If exist). At this point, the cryptdoev-vhost-user works. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com> Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gonglei
Michael S. Tsirkin
parent
042cea274c
commit
5da73dabe8
7 changed files with 398 additions and 0 deletions
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@ -23,9 +23,16 @@
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*/
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#include "qemu/osdep.h"
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#include "hw/virtio/virtio-bus.h"
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#include "sysemu/cryptodev-vhost.h"
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#ifdef CONFIG_VHOST_CRYPTO
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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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#include "hw/virtio/virtio-crypto.h"
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#include "sysemu/cryptodev-vhost-user.h"
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uint64_t
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cryptodev_vhost_get_max_queues(
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CryptoDevBackendVhost *crypto)
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@ -70,6 +77,228 @@ fail:
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return NULL;
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}
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static int
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cryptodev_vhost_start_one(CryptoDevBackendVhost *crypto,
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VirtIODevice *dev)
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{
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int r;
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crypto->dev.nvqs = 1;
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crypto->dev.vqs = crypto->vqs;
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r = vhost_dev_enable_notifiers(&crypto->dev, dev);
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if (r < 0) {
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goto fail_notifiers;
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}
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r = vhost_dev_start(&crypto->dev, dev);
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if (r < 0) {
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goto fail_start;
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}
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return 0;
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fail_start:
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vhost_dev_disable_notifiers(&crypto->dev, dev);
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fail_notifiers:
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return r;
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}
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static void
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cryptodev_vhost_stop_one(CryptoDevBackendVhost *crypto,
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VirtIODevice *dev)
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{
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vhost_dev_stop(&crypto->dev, dev);
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vhost_dev_disable_notifiers(&crypto->dev, dev);
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}
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CryptoDevBackendVhost *
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cryptodev_get_vhost(CryptoDevBackendClient *cc,
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CryptoDevBackend *b,
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uint16_t queue)
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{
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CryptoDevBackendVhost *vhost_crypto = NULL;
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if (!cc) {
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return NULL;
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}
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switch (cc->type) {
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#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
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case CRYPTODEV_BACKEND_TYPE_VHOST_USER:
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vhost_crypto = cryptodev_vhost_user_get_vhost(cc, b, queue);
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break;
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#endif
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default:
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break;
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}
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return vhost_crypto;
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}
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static void
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cryptodev_vhost_set_vq_index(CryptoDevBackendVhost *crypto,
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int vq_index)
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{
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crypto->dev.vq_index = vq_index;
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}
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static int
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vhost_set_vring_enable(CryptoDevBackendClient *cc,
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CryptoDevBackend *b,
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uint16_t queue, int enable)
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{
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CryptoDevBackendVhost *crypto =
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cryptodev_get_vhost(cc, b, queue);
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const VhostOps *vhost_ops;
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cc->vring_enable = enable;
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if (!crypto) {
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return 0;
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}
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vhost_ops = crypto->dev.vhost_ops;
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if (vhost_ops->vhost_set_vring_enable) {
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return vhost_ops->vhost_set_vring_enable(&crypto->dev, enable);
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}
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return 0;
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}
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int cryptodev_vhost_start(VirtIODevice *dev, int total_queues)
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{
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VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev);
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BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(dev)));
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VirtioBusState *vbus = VIRTIO_BUS(qbus);
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VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
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int r, e;
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int i;
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CryptoDevBackend *b = vcrypto->cryptodev;
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CryptoDevBackendVhost *vhost_crypto;
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CryptoDevBackendClient *cc;
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if (!k->set_guest_notifiers) {
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error_report("binding does not support guest notifiers");
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return -ENOSYS;
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}
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for (i = 0; i < total_queues; i++) {
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cc = b->conf.peers.ccs[i];
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vhost_crypto = cryptodev_get_vhost(cc, b, i);
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cryptodev_vhost_set_vq_index(vhost_crypto, i);
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/* Suppress the masking guest notifiers on vhost user
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* because vhost user doesn't interrupt masking/unmasking
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* properly.
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*/
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if (cc->type == CRYPTODEV_BACKEND_TYPE_VHOST_USER) {
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dev->use_guest_notifier_mask = false;
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}
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}
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r = k->set_guest_notifiers(qbus->parent, total_queues, true);
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if (r < 0) {
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error_report("error binding guest notifier: %d", -r);
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goto err;
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}
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for (i = 0; i < total_queues; i++) {
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cc = b->conf.peers.ccs[i];
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vhost_crypto = cryptodev_get_vhost(cc, b, i);
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r = cryptodev_vhost_start_one(vhost_crypto, dev);
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if (r < 0) {
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goto err_start;
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}
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if (cc->vring_enable) {
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/* restore vring enable state */
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r = vhost_set_vring_enable(cc, b, i, cc->vring_enable);
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if (r < 0) {
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goto err_start;
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}
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}
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}
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return 0;
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err_start:
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while (--i >= 0) {
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cc = b->conf.peers.ccs[i];
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vhost_crypto = cryptodev_get_vhost(cc, b, i);
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cryptodev_vhost_stop_one(vhost_crypto, dev);
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}
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e = k->set_guest_notifiers(qbus->parent, total_queues, false);
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if (e < 0) {
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error_report("vhost guest notifier cleanup failed: %d", e);
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}
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err:
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return r;
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}
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void cryptodev_vhost_stop(VirtIODevice *dev, int total_queues)
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{
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BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(dev)));
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VirtioBusState *vbus = VIRTIO_BUS(qbus);
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VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
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VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev);
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CryptoDevBackend *b = vcrypto->cryptodev;
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CryptoDevBackendVhost *vhost_crypto;
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CryptoDevBackendClient *cc;
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size_t i;
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int r;
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for (i = 0; i < total_queues; i++) {
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cc = b->conf.peers.ccs[i];
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vhost_crypto = cryptodev_get_vhost(cc, b, i);
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cryptodev_vhost_stop_one(vhost_crypto, dev);
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}
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r = k->set_guest_notifiers(qbus->parent, total_queues, false);
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if (r < 0) {
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error_report("vhost guest notifier cleanup failed: %d", r);
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}
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assert(r >= 0);
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}
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void cryptodev_vhost_virtqueue_mask(VirtIODevice *dev,
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int queue,
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int idx, bool mask)
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{
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VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev);
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CryptoDevBackend *b = vcrypto->cryptodev;
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CryptoDevBackendVhost *vhost_crypto;
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CryptoDevBackendClient *cc;
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assert(queue < MAX_CRYPTO_QUEUE_NUM);
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cc = b->conf.peers.ccs[queue];
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vhost_crypto = cryptodev_get_vhost(cc, b, queue);
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vhost_virtqueue_mask(&vhost_crypto->dev, dev, idx, mask);
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}
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bool cryptodev_vhost_virtqueue_pending(VirtIODevice *dev,
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int queue, int idx)
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{
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VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev);
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CryptoDevBackend *b = vcrypto->cryptodev;
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CryptoDevBackendVhost *vhost_crypto;
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CryptoDevBackendClient *cc;
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assert(queue < MAX_CRYPTO_QUEUE_NUM);
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cc = b->conf.peers.ccs[queue];
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vhost_crypto = cryptodev_get_vhost(cc, b, queue);
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return vhost_virtqueue_pending(&vhost_crypto->dev, idx);
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}
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#else
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uint64_t
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cryptodev_vhost_get_max_queues(CryptoDevBackendVhost *crypto)
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@ -86,4 +315,33 @@ cryptodev_vhost_init(CryptoDevBackendVhostOptions *options)
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{
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return NULL;
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}
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CryptoDevBackendVhost *
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cryptodev_get_vhost(CryptoDevBackendClient *cc,
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CryptoDevBackend *b,
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uint16_t queue)
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{
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return NULL;
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}
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int cryptodev_vhost_start(VirtIODevice *dev, int total_queues)
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{
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return -1;
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}
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void cryptodev_vhost_stop(VirtIODevice *dev, int total_queues)
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{
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}
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void cryptodev_vhost_virtqueue_mask(VirtIODevice *dev,
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int queue,
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int idx, bool mask)
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{
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}
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bool cryptodev_vhost_virtqueue_pending(VirtIODevice *dev,
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int queue, int idx)
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{
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return false;
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}
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#endif
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