[v2,07/15] virtio-crypto: introduce virtio-crypto.h

Commit Message

Gonglei (Arei) Sept. 13, 2016, 3:52 a.m. UTC

This patch introduces the header of virtio crypto emulation.

Signed-off-by: Gonglei <[e-mail]>
---
 include/hw/virtio/virtio-crypto.h | 84 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 include/hw/virtio/virtio-crypto.h

Patch

diff --git a/include/hw/virtio/virtio-crypto.h b/include/hw/virtio/virtio-crypto.h
new file mode 100644
index 0000000..243ed71
--- /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 <[e-mail]>
+ *
+ * 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 */