[Qemu-devel] [PATCH v1 07/14] virtio-crypto: introduce virtio-crypto.h

[Gonglei]

This patch introduces the header of virtio crypto emulation.

Signed-off-by: Gonglei <address@hidden>
---
 include/hw/virtio/virtio-crypto.h              | 84 ++++++++++++++++++++++++++
 include/standard-headers/linux/virtio_crypto.h | 34 +++++------
 2 files changed, 101 insertions(+), 17 deletions(-)
 create mode 100644 include/hw/virtio/virtio-crypto.h

diff --git a/include/hw/virtio/virtio-crypto.h 
b/include/hw/virtio/virtio-crypto.h
new file mode 100644
index 0000000..fa97e97
--- /dev/null
+++ b/include/hw/virtio/virtio-crypto.h
@@ -0,0 +1,84 @@
+/*
+ * Virtio crypto Support
+ *
+ * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
+ *
+ * Authors:
+ *    Gonglei <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.  See the COPYING file in the
+ * top-level directory.
+ */
+
+#ifndef _QEMU_VIRTIO_CRYPTO_H
+#define _QEMU_VIRTIO_CRYPTO_H
+
+#include "standard-headers/linux/virtio_crypto.h"
+#include "hw/virtio/virtio.h"
+#include "sysemu/iothread.h"
+#include "crypto/crypto.h"
+
+#define VIRTIO_ID_CRYPTO 20
+
+/* #define DEBUG_VIRTIO_CRYPTO */
+
+#ifdef DEBUG_VIRTIO_CRYPTO
+#define DPRINTF(fmt, ...) \
+do { printf("virtio_crypto: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) do { } while (0)
+#endif
+
+#define TYPE_VIRTIO_CRYPTO "virtio-crypto-device"
+#define VIRTIO_CRYPTO(obj) \
+        OBJECT_CHECK(VirtIOCrypto, (obj), TYPE_VIRTIO_CRYPTO)
+#define VIRTIO_CRYPTO_GET_PARENT_CLASS(obj) \
+        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_CRYPTO)
+
+
+/* Limit the number of packets that can be sent via a single flush
+ * of the TX queue.  This gives us a guaranteed exit condition and
+ * ensures fairness in the io path.  256 conveniently matches the
+ * length of the TX queue and shows a good balance of performance
+ * and latency. */
+#define VIRTIO_CRYPTO_TX_BURST 256
+
+typedef struct VirtIOCryptoConf {
+    int32_t txburst;
+} VirtIOCryptoConf;
+
+struct VirtIOCrypto;
+
+typedef struct VirtIOCryptoQueue {
+    VirtQueue *dataq;
+    QEMUBH *tx_bh;
+    int tx_waiting;
+    struct {
+        VirtQueueElement *elem;
+        uint32_t flags;
+        CryptoSymOpInfo *op_info;
+        void *idata_hva;
+    } async_tx;
+    struct VirtIOCrypto *vcrypto;
+} VirtIOCryptoQueue;
+
+typedef struct VirtIOCrypto {
+    VirtIODevice parent_obj;
+
+    VirtIOCryptoQueue *vqs;
+    VirtQueue *ctrl_vq;
+    CryptoLegacyHWState *crypto;
+    CryptoLegacyHWConf legacy_conf;
+
+    VirtIOCryptoConf conf;
+    int32_t tx_burst;
+    uint32_t max_queues;
+    uint32_t status;
+
+    int multiqueue;
+    uint32_t curr_queues;
+    size_t config_size;
+} VirtIOCrypto;
+
+#endif /* _QEMU_VIRTIO_CRYPTO_H */
diff --git a/include/standard-headers/linux/virtio_crypto.h 
b/include/standard-headers/linux/virtio_crypto.h
index 443b2a8..5d8b37e 100644
--- a/include/standard-headers/linux/virtio_crypto.h
+++ b/include/standard-headers/linux/virtio_crypto.h
@@ -13,7 +13,7 @@
 
 #define VIRTIO_CRYPTO_OPCODE(service, op)   ((service << 8) | (op))
 
-struct virtio_crypto_ctrl_header{
+struct virtio_crypto_ctrl_header {
 #define VIRTIO_CRYPTO_CIPHER_CREATE_SESSION \
        VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x02)
 #define VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION \
@@ -65,7 +65,7 @@ struct virtio_crypto_cipher_session_para {
 };
 
 struct virtio_crypto_session_input {
-    // Device-writable part
+    /* Device-writable part */
     __virtio64 session_id;
     __virtio32 status;
     __virtio32 padding;
@@ -205,7 +205,7 @@ struct virtio_crypto_sym_create_session_req {
         struct virtio_crypto_alg_chain_session_req chain;
     } u;
 
-    // Device-readable part
+    /* Device-readable part */
 
 /* No operation */
 #define VIRTIO_CRYPTO_SYM_OP_NONE  0
@@ -219,9 +219,9 @@ struct virtio_crypto_sym_create_session_req {
 };
 
 struct virtio_crypto_destroy_session_req {
-    // Device-readable part
+    /* Device-readable part */
     __virtio64  session_id;
-    // Device-writable part
+    /* Device-writable part */
     __virtio32  status;
     __virtio32  padding;
 };
@@ -331,24 +331,24 @@ struct virtio_crypto_aead_output {
 };
 
 struct virtio_crypto_cipher_data_req {
-    // Device-readable part
+    /* Device-readable part */
     struct virtio_crypto_cipher_para para;
     struct virtio_crypto_cipher_output odata;
-    // Device-writable part
+    /* Device-writable part */
     struct virtio_crypto_cipher_input idata;
 };
 
 struct virtio_crypto_hash_data_req {
-    // Device-readable part
+    /* Device-readable part */
     struct virtio_crypto_hash_output odata;
-    // Device-writable part
+    /* Device-writable part */
     struct virtio_crypto_hash_input idata;
 };
 
 struct virtio_crypto_mac_data_req {
-    // Device-readable part
+    /* Device-readable part */
     struct virtio_crypto_mac_output odata;
-    // Device-writable part
+    /* Device-writable part */
     struct virtio_crypto_mac_input idata;
 };
 
@@ -359,7 +359,7 @@ struct virtio_crypto_alg_chain_data_para {
 struct virtio_crypto_alg_chain_data_output {
     struct virtio_crypto_cipher_output cipher;
 
-    // Device-readable part
+    /* Device-readable part */
     __virtio64 aad_data_addr; /* additional auth data guest address */
     __virtio32 aad_len; /* length of additional auth data */
     __virtio32 padding;
@@ -370,10 +370,10 @@ struct virtio_crypto_alg_chain_data_input {
 };
 
 struct virtio_crypto_alg_chain_data_req {
-    // Device-readable part
+    /* Device-readable part */
     struct virtio_crypto_alg_chain_data_para para;
     struct virtio_crypto_alg_chain_data_output odata;
-    // Device-writable part
+    /* Device-writable part */
     struct virtio_crypto_alg_chain_data_input idata;
 };
 
@@ -383,7 +383,7 @@ struct virtio_crypto_sym_data_req {
         struct virtio_crypto_alg_chain_data_req chain;
     } u;
 
-    // Device-readable part
+    /* Device-readable part */
 
     /* See above VIRTIO_CRYPTO_SYM_OP_* */
     __virtio32 op_type;
@@ -391,10 +391,10 @@ struct virtio_crypto_sym_data_req {
 };
 
 struct virtio_crypto_aead_data_req {
-    // Device-readable part
+    /* Device-readable part */
     struct virtio_crypto_aead_para para;
     struct virtio_crypto_aead_output odata;
-    // Device-writable part
+    /* Device-writable part */
     struct virtio_crypto_aead_input idata;
 };
 
-- 
1.7.12.4