Expose the capacity of algorithms supported by
virtio crypto device to the frontend driver using
pci configuration space.

Signed-off-by: Gonglei <arei.gong...@huawei.com>
---
 hw/virtio/virtio-crypto.c         | 40 ++++++++++++++++++++++++++++++++++++++-
 include/hw/virtio/virtio-crypto.h | 14 ++++++++++++++
 2 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c
index 109a504..2032d31 100644
--- a/hw/virtio/virtio-crypto.c
+++ b/hw/virtio/virtio-crypto.c
@@ -42,6 +42,22 @@ static void virtio_crypto_reset(VirtIODevice *vdev)
     }
 }
 
+static void virtio_crypto_init_config(VirtIODevice *vdev)
+{
+    VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev);
+
+    vcrypto->conf.crypto_services =
+                     vcrypto->conf.cryptodev->conf.crypto_services;
+    vcrypto->conf.cipher_algo_l =
+                     vcrypto->conf.cryptodev->conf.cipher_algo_l;
+    vcrypto->conf.cipher_algo_h =
+                     vcrypto->conf.cryptodev->conf.cipher_algo_h;
+    vcrypto->conf.hash_algo = vcrypto->conf.cryptodev->conf.hash_algo;
+    vcrypto->conf.mac_algo_l = vcrypto->conf.cryptodev->conf.mac_algo_l;
+    vcrypto->conf.mac_algo_h = vcrypto->conf.cryptodev->conf.mac_algo_h;
+    vcrypto->conf.aead_algo = vcrypto->conf.cryptodev->conf.aead_algo;
+}
+
 static void virtio_crypto_device_realize(DeviceState *dev, Error **errp)
 {
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
@@ -75,6 +91,8 @@ static void virtio_crypto_device_realize(DeviceState *dev, 
Error **errp)
     } else {
         vcrypto->status |= VIRTIO_CRYPTO_S_HW_READY;
     }
+
+    virtio_crypto_init_config(vdev);
 }
 
 static void virtio_crypto_device_unrealize(DeviceState *dev, Error **errp)
@@ -100,7 +118,27 @@ static Property virtio_crypto_properties[] = {
 
 static void virtio_crypto_get_config(VirtIODevice *vdev, uint8_t *config)
 {
-
+    VirtIOCrypto *c = VIRTIO_CRYPTO(vdev);
+    struct virtio_crypto_config crypto_cfg;
+
+    virtio_stl_p(vdev, &crypto_cfg.status, c->status);
+    virtio_stl_p(vdev, &crypto_cfg.max_dataqueues, c->max_queues);
+    virtio_stl_p(vdev, &crypto_cfg.crypto_services,
+                       c->conf.crypto_services);
+    virtio_stl_p(vdev, &crypto_cfg.cipher_algo_l,
+                       c->conf.cipher_algo_l);
+    virtio_stl_p(vdev, &crypto_cfg.cipher_algo_h,
+                       c->conf.cipher_algo_h);
+    virtio_stl_p(vdev, &crypto_cfg.hash_algo,
+                       c->conf.hash_algo);
+    virtio_stl_p(vdev, &crypto_cfg.mac_algo_l,
+                       c->conf.mac_algo_l);
+    virtio_stl_p(vdev, &crypto_cfg.mac_algo_h,
+                       c->conf.mac_algo_h);
+    virtio_stl_p(vdev, &crypto_cfg.aead_algo,
+                       c->conf.aead_algo);
+
+    memcpy(config, &crypto_cfg, c->config_size);
 }
 
 static void virtio_crypto_class_init(ObjectClass *klass, void *data)
diff --git a/include/hw/virtio/virtio-crypto.h 
b/include/hw/virtio/virtio-crypto.h
index 9bf2b74..a5e826c 100644
--- a/include/hw/virtio/virtio-crypto.h
+++ b/include/hw/virtio/virtio-crypto.h
@@ -39,6 +39,20 @@ do { \
 
 typedef struct VirtIOCryptoConf {
     CryptoDevBackend *cryptodev;
+
+    /* Supported service mask */
+    uint32_t crypto_services;
+
+    /* Detailed algorithms mask */
+    uint32_t cipher_algo_l;
+    uint32_t cipher_algo_h;
+    uint32_t hash_algo;
+    uint32_t mac_algo_l;
+    uint32_t mac_algo_h;
+    uint32_t asym_algo;
+    uint32_t kdf_algo;
+    uint32_t aead_algo;
+    uint32_t primitive_algo;
 } VirtIOCryptoConf;
 
 struct VirtIOCrypto;
-- 
1.8.3.1



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