On 04/04/2018 04:25 PM, Fan Zhang wrote:
This patch adds the implementation that parses virtio crypto request
to dpdk crypto operation.
Signed-off-by: Fan Zhang <roy.fan.zh...@intel.com>
---
lib/librte_vhost/rte_vhost_crypto.h | 14 +
lib/librte_vhost/vhost_crypto.c | 622 ++++++++++++++++++++++++++++++++++++
2 files changed, 636 insertions(+)
create mode 100644 lib/librte_vhost/rte_vhost_crypto.h
...
diff --git a/lib/librte_vhost/vhost_crypto.c b/lib/librte_vhost/vhost_crypto.c
index 34587c27e..5608e94ad 100644
--- a/lib/librte_vhost/vhost_crypto.c
+++ b/lib/librte_vhost/vhost_crypto.c
@@ -8,9 +8,11 @@
...
+static uint8_t
+prepare_sym_cipher_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op,
+ struct vhost_crypto_data_req *vc_req,
+ struct virtio_crypto_cipher_data_req *cipher,
+ struct vring_desc *cur_desc)
+{
+ struct vring_desc *head = vc_req->head;
+ struct vring_desc *desc = cur_desc;
+ struct rte_vhost_memory *mem = vc_req->mem;
+ struct rte_mbuf *m_src = op->sym->m_src, *m_dst = op->sym->m_dst;
+ uint8_t *iv_data = rte_crypto_op_ctod_offset(op, uint8_t *, IV_OFFSET);
+ uint8_t ret = 0;
+
+ /* prepare */
+ /* iv */
+ if (unlikely(copy_data(iv_data, head, mem, &desc,
+ cipher->para.iv_len) < 0)) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+
+#ifdef RTE_LIBRTE_VHOST_DEBUG
+ rte_hexdump(stdout, "IV:", iv_data, cipher->para.iv_len);
+#endif
+
+ m_src->data_len = cipher->para.src_data_len;
+
+ switch (vcrypto->option) {
+ case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE:
+ m_src->buf_iova = gpa_to_hpa(vcrypto->dev, desc->addr,
+ cipher->para.src_data_len);
+ m_src->buf_addr = get_data_ptr(head, mem, &desc,
+ cipher->para.src_data_len);
+ if (unlikely(m_src->buf_iova == 0 ||
+ m_src->buf_addr == NULL)) {
+ VC_LOG_ERR("zero_copy may fail due to cross page data");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+ break;
+ case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE:
+ if (unlikely(cipher->para.src_data_len >
+ RTE_MBUF_DEFAULT_BUF_SIZE)) {
+ VC_LOG_ERR("Not enough space to do data copy");
+ ret = VIRTIO_CRYPTO_ERR;
+ goto error_exit;
+ }
+ if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *), head,
+ mem, &desc, cipher->para.src_data_len))
+ < 0) {
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ }
+ break;
+ default:
+ ret = VIRTIO_CRYPTO_BADMSG;
+ goto error_exit;
+ break;
Note: I removed the break to make checkpatch happy.
