crypto: change cryptodev with new cryptodev API

Type: feature

This patch updateds cryptodev engine uses new DPDK Cryptodev
API planned to be upstreamed in DPDK 20.11.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Signed-off-by: Piotr Bronowski <piotrX.bronowski@intel.com>
Change-Id: I8dd1a8ac643f1e952deb787e466b76ea7aa5f420

1 files changed, 1536 insertions, 0 deletions

diff --git a/src/plugins/dpdk/cryptodev/cryptodev_dp_api.c b/src/plugins/dpdk/cryptodev/cryptodev_dp_api.c
new file mode 100644
index 00000000000..8fcfa2edf48
--- /dev/null
+++ b/src/plugins/dpdk/cryptodev/cryptodev_dp_api.c
@@ -0,0 +1,1536 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2020 Intel and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/plugin/plugin.h>
+#include <vnet/crypto/crypto.h>
+#include <vnet/vnet.h>
+#include <vpp/app/version.h>
+
+#include <dpdk/buffer.h>
+#include <dpdk/device/dpdk.h>
+#include <dpdk/device/dpdk_priv.h>
+#undef always_inline
+#include <rte_bus_vdev.h>
+#include <rte_cryptodev.h>
+#include <rte_crypto_sym.h>
+#include <rte_crypto.h>
+#include <rte_cryptodev_pmd.h>
+#include <rte_config.h>
+
+#if CLIB_DEBUG > 0
+#define always_inline static inline
+#else
+#define always_inline static inline __attribute__ ((__always_inline__))
+#endif
+
+#define CRYPTODEV_NB_CRYPTO_OPS	1024
+#define CRYPTODEV_MAX_INFLIGHT	(CRYPTODEV_NB_CRYPTO_OPS - 1)
+#define CRYPTODEV_AAD_MASK	(CRYPTODEV_NB_CRYPTO_OPS - 1)
+#define CRYPTODEV_DEQ_CACHE_SZ	32
+#define CRYPTODEV_NB_SESSION	10240
+#define CRYPTODEV_MAX_AAD_SIZE	16
+#define CRYPTODEV_MAX_N_SGL	8 /**< maximum number of segments */
+
+/* VNET_CRYPTO_ALGO, TYPE, DPDK_CRYPTO_ALGO, IV_LEN, TAG_LEN, AAD_LEN */
+#define foreach_vnet_aead_crypto_conversion \
+  _(AES_128_GCM, AEAD, AES_GCM, 12, 16, 8)  \
+  _(AES_128_GCM, AEAD, AES_GCM, 12, 16, 12) \
+  _(AES_192_GCM, AEAD, AES_GCM, 12, 16, 8)  \
+  _(AES_192_GCM, AEAD, AES_GCM, 12, 16, 12) \
+  _(AES_256_GCM, AEAD, AES_GCM, 12, 16, 8)  \
+  _(AES_256_GCM, AEAD, AES_GCM, 12, 16, 12)
+
+/**
+ * crypto (alg, cryptodev_alg), hash (alg, digest-size)
+ **/
+#define foreach_cryptodev_link_async_alg	\
+  _ (AES_128_CBC, AES_CBC, SHA1, 12)		\
+  _ (AES_192_CBC, AES_CBC, SHA1, 12)		\
+  _ (AES_256_CBC, AES_CBC, SHA1, 12)		\
+  _ (AES_128_CBC, AES_CBC, SHA224, 14)		\
+  _ (AES_192_CBC, AES_CBC, SHA224, 14)		\
+  _ (AES_256_CBC, AES_CBC, SHA224, 14)		\
+  _ (AES_128_CBC, AES_CBC, SHA256, 16)		\
+  _ (AES_192_CBC, AES_CBC, SHA256, 16)		\
+  _ (AES_256_CBC, AES_CBC, SHA256, 16)		\
+  _ (AES_128_CBC, AES_CBC, SHA384, 24)		\
+  _ (AES_192_CBC, AES_CBC, SHA384, 24)		\
+  _ (AES_256_CBC, AES_CBC, SHA384, 24)		\
+  _ (AES_128_CBC, AES_CBC, SHA512, 32)		\
+  _ (AES_192_CBC, AES_CBC, SHA512, 32)		\
+  _ (AES_256_CBC, AES_CBC, SHA512, 32)
+
+typedef enum
+{
+  CRYPTODEV_OP_TYPE_ENCRYPT = 0,
+  CRYPTODEV_OP_TYPE_DECRYPT,
+  CRYPTODEV_N_OP_TYPES,
+} cryptodev_op_type_t;
+
+typedef struct
+{
+  struct rte_cryptodev_sym_session *keys[CRYPTODEV_N_OP_TYPES];
+} cryptodev_key_t;
+
+typedef struct
+{
+  u32 dev_id;
+  u32 q_id;
+  u8 *dp_service_buffer;
+  char *desc;
+} cryptodev_inst_t;
+
+typedef struct
+{
+  struct rte_mempool *sess_pool;
+  struct rte_mempool *sess_priv_pool;
+} cryptodev_numa_data_t;
+
+typedef struct
+{
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+  vlib_buffer_t *b[VNET_CRYPTO_FRAME_SIZE];
+  struct rte_crypto_dp_service_ctx *dp_service;
+  struct rte_crypto_vec vec[CRYPTODEV_MAX_N_SGL];
+  struct rte_ring *cached_frame;
+  u16 aad_index;
+  u8 *aad_buf;
+  u64 aad_phy_addr;
+  u16 cryptodev_id;
+  u16 cryptodev_q;
+  u16 inflight;
+} cryptodev_engine_thread_t;
+
+typedef struct
+{
+  cryptodev_numa_data_t *per_numa_data;
+  cryptodev_key_t *keys;
+  cryptodev_engine_thread_t *per_thread_data;
+  enum rte_iova_mode iova_mode;
+  cryptodev_inst_t *cryptodev_inst;
+  clib_bitmap_t *active_cdev_inst_mask;
+  clib_spinlock_t tlock;
+} cryptodev_main_t;
+
+cryptodev_main_t cryptodev_main;
+
+static int
+prepare_aead_xform (struct rte_crypto_sym_xform *xform,
+		    cryptodev_op_type_t op_type,
+		    const vnet_crypto_key_t * key, u32 aad_len)
+{
+  struct rte_crypto_aead_xform *aead_xform = &xform->aead;
+  memset (xform, 0, sizeof (*xform));
+  xform->type = RTE_CRYPTO_SYM_XFORM_AEAD;
+  xform->next = 0;
+
+  if (key->alg != VNET_CRYPTO_ALG_AES_128_GCM &&
+      key->alg != VNET_CRYPTO_ALG_AES_192_GCM &&
+      key->alg != VNET_CRYPTO_ALG_AES_256_GCM)
+    return -1;
+
+  aead_xform->algo = RTE_CRYPTO_AEAD_AES_GCM;
+  aead_xform->op = (op_type == CRYPTODEV_OP_TYPE_ENCRYPT) ?
+    RTE_CRYPTO_AEAD_OP_ENCRYPT : RTE_CRYPTO_AEAD_OP_DECRYPT;
+  aead_xform->aad_length = aad_len;
+  aead_xform->digest_length = 16;
+  aead_xform->iv.offset = 0;
+  aead_xform->iv.length = 12;
+  aead_xform->key.data = key->data;
+  aead_xform->key.length = vec_len (key->data);
+
+  return 0;
+}
+
+static int
+prepare_linked_xform (struct rte_crypto_sym_xform *xforms,
+		      cryptodev_op_type_t op_type,
+		      const vnet_crypto_key_t * key)
+{
+  struct rte_crypto_sym_xform *xform_cipher, *xform_auth;
+  vnet_crypto_key_t *key_cipher, *key_auth;
+  enum rte_crypto_cipher_algorithm cipher_algo = ~0;
+  enum rte_crypto_auth_algorithm auth_algo = ~0;
+  u32 digest_len = ~0;
+
+  key_cipher = vnet_crypto_get_key (key->index_crypto);
+  key_auth = vnet_crypto_get_key (key->index_integ);
+  if (!key_cipher || !key_auth)
+    return -1;
+
+  if (op_type == CRYPTODEV_OP_TYPE_ENCRYPT)
+    {
+      xform_cipher = xforms;
+      xform_auth = xforms + 1;
+      xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
+      xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_GENERATE;
+    }
+  else
+    {
+      xform_cipher = xforms + 1;
+      xform_auth = xforms;
+      xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT;
+      xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_VERIFY;
+    }
+
+  xform_cipher->type = RTE_CRYPTO_SYM_XFORM_CIPHER;
+  xform_auth->type = RTE_CRYPTO_SYM_XFORM_AUTH;
+  xforms->next = xforms + 1;
+
+  switch (key->async_alg)
+    {
+#define _(a, b, c, d) \
+  case VNET_CRYPTO_ALG_##a##_##c##_TAG##d:\
+    cipher_algo = RTE_CRYPTO_CIPHER_##b; \
+    auth_algo = RTE_CRYPTO_AUTH_##c##_HMAC; \
+    digest_len = d; \
+    break;
+
+      foreach_cryptodev_link_async_alg
+#undef _
+    default:
+      return -1;
+    }
+
+  xform_cipher->cipher.algo = cipher_algo;
+  xform_cipher->cipher.key.data = key_cipher->data;
+  xform_cipher->cipher.key.length = vec_len (key_cipher->data);
+  xform_cipher->cipher.iv.length = 16;
+  xform_cipher->cipher.iv.offset = 0;
+
+  xform_auth->auth.algo = auth_algo;
+  xform_auth->auth.digest_length = digest_len;
+  xform_auth->auth.key.data = key_auth->data;
+  xform_auth->auth.key.length = vec_len (key_auth->data);
+
+  return 0;
+}
+
+static int
+cryptodev_session_create (vnet_crypto_key_t * const key,
+			  struct rte_mempool *sess_priv_pool,
+			  cryptodev_key_t * session_pair, u32 aad_len)
+{
+  struct rte_crypto_sym_xform xforms_enc[2] = { {0} };
+  struct rte_crypto_sym_xform xforms_dec[2] = { {0} };
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_inst_t *dev_inst;
+  struct rte_cryptodev *cdev;
+  int ret;
+  uint8_t dev_id = 0;
+
+  if (key->type == VNET_CRYPTO_KEY_TYPE_LINK)
+    ret = prepare_linked_xform (xforms_enc, CRYPTODEV_OP_TYPE_ENCRYPT, key);
+  else
+    ret = prepare_aead_xform (xforms_enc, CRYPTODEV_OP_TYPE_ENCRYPT, key,
+			      aad_len);
+  if (ret)
+    return 0;
+
+  if (key->type == VNET_CRYPTO_KEY_TYPE_LINK)
+    prepare_linked_xform (xforms_dec, CRYPTODEV_OP_TYPE_DECRYPT, key);
+  else
+    prepare_aead_xform (xforms_dec, CRYPTODEV_OP_TYPE_DECRYPT, key, aad_len);
+
+  vec_foreach (dev_inst, cmt->cryptodev_inst)
+  {
+    dev_id = dev_inst->dev_id;
+    cdev = rte_cryptodev_pmd_get_dev (dev_id);
+
+    /* if the session is already configured for the driver type, avoid
+       configuring it again to increase the session data's refcnt */
+    if (session_pair->keys[0]->sess_data[cdev->driver_id].data &&
+	session_pair->keys[1]->sess_data[cdev->driver_id].data)
+      continue;
+
+    ret = rte_cryptodev_sym_session_init (dev_id, session_pair->keys[0],
+					  xforms_enc, sess_priv_pool);
+    ret = rte_cryptodev_sym_session_init (dev_id, session_pair->keys[1],
+					  xforms_dec, sess_priv_pool);
+    if (ret < 0)
+      return ret;
+  }
+  session_pair->keys[0]->opaque_data = aad_len;
+  session_pair->keys[1]->opaque_data = aad_len;
+
+  return 0;
+}
+
+static void
+cryptodev_session_del (struct rte_cryptodev_sym_session *sess)
+{
+  u32 n_devs, i;
+
+  if (sess == NULL)
+    return;
+
+  n_devs = rte_cryptodev_count ();
+
+  for (i = 0; i < n_devs; i++)
+    rte_cryptodev_sym_session_clear (i, sess);
+
+  rte_cryptodev_sym_session_free (sess);
+}
+
+static int
+cryptodev_check_supported_vnet_alg (vnet_crypto_key_t * key)
+{
+  vnet_crypto_alg_t alg;
+  if (key->type == VNET_CRYPTO_KEY_TYPE_LINK)
+    return 0;
+
+  alg = key->alg;
+
+#define _(a, b, c, d, e, f)	\
+  if (alg == VNET_CRYPTO_ALG_##a) \
+    return 0;
+
+  foreach_vnet_aead_crypto_conversion
+#undef _
+    return -1;
+}
+
+static_always_inline void
+cryptodev_sess_handler (vlib_main_t * vm, vnet_crypto_key_op_t kop,
+			vnet_crypto_key_index_t idx, u32 aad_len)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_numa_data_t *numa_data;
+  vnet_crypto_key_t *key = vnet_crypto_get_key (idx);
+  struct rte_mempool *sess_pool, *sess_priv_pool;
+  cryptodev_key_t *ckey = 0;
+  int ret = 0;
+
+  if (kop == VNET_CRYPTO_KEY_OP_DEL)
+    {
+      if (idx >= vec_len (cmt->keys))
+	return;
+
+      ckey = pool_elt_at_index (cmt->keys, idx);
+      cryptodev_session_del (ckey->keys[0]);
+      cryptodev_session_del (ckey->keys[1]);
+      ckey->keys[0] = 0;
+      ckey->keys[1] = 0;
+      pool_put (cmt->keys, ckey);
+      return;
+    }
+  else if (kop == VNET_CRYPTO_KEY_OP_MODIFY)
+    {
+      if (idx >= vec_len (cmt->keys))
+	return;
+
+      ckey = pool_elt_at_index (cmt->keys, idx);
+
+      cryptodev_session_del (ckey->keys[0]);
+      cryptodev_session_del (ckey->keys[1]);
+      ckey->keys[0] = 0;
+      ckey->keys[1] = 0;
+    }
+  else				/* create key */
+    pool_get_zero (cmt->keys, ckey);
+
+  /* do not create session for unsupported alg */
+  if (cryptodev_check_supported_vnet_alg (key))
+    return;
+
+  numa_data = vec_elt_at_index (cmt->per_numa_data, vm->numa_node);
+  sess_pool = numa_data->sess_pool;
+  sess_priv_pool = numa_data->sess_priv_pool;
+
+  ckey->keys[0] = rte_cryptodev_sym_session_create (sess_pool);
+  if (!ckey->keys[0])
+    {
+      ret = -1;
+      goto clear_key;
+    }
+
+  ckey->keys[1] = rte_cryptodev_sym_session_create (sess_pool);
+  if (!ckey->keys[1])
+    {
+      ret = -1;
+      goto clear_key;
+    }
+
+  ret = cryptodev_session_create (key, sess_priv_pool, ckey, aad_len);
+
+clear_key:
+  if (ret != 0)
+    {
+      cryptodev_session_del (ckey->keys[0]);
+      cryptodev_session_del (ckey->keys[1]);
+      memset (ckey, 0, sizeof (*ckey));
+      pool_put (cmt->keys, ckey);
+    }
+}
+
+/*static*/ void
+cryptodev_key_handler (vlib_main_t * vm, vnet_crypto_key_op_t kop,
+		       vnet_crypto_key_index_t idx)
+{
+  cryptodev_sess_handler (vm, kop, idx, 8);
+}
+
+static_always_inline void
+cryptodev_mark_frame_err_status (vnet_crypto_async_frame_t * f,
+				 vnet_crypto_op_status_t s)
+{
+  u32 n_elts = f->n_elts, i;
+
+  for (i = 0; i < n_elts; i++)
+    f->elts[i].status = s;
+  f->state = VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED;
+}
+
+static_always_inline int
+cryptodev_frame_build_sgl (vlib_main_t * vm, enum rte_iova_mode iova_mode,
+			   struct rte_crypto_vec *data_vec,
+			   u16 * n_seg, vlib_buffer_t * b, u32 size)
+{
+  struct rte_crypto_vec *vec = data_vec + 1;
+  if (vlib_buffer_chain_linearize (vm, b) > CRYPTODEV_MAX_N_SGL)
+    return -1;
+
+  while ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && size)
+    {
+      u32 len;
+      b = vlib_get_buffer (vm, b->next_buffer);
+      len = clib_min (b->current_length, size);
+      vec->base = (void *) vlib_buffer_get_current (b);
+      if (iova_mode == RTE_IOVA_VA)
+	vec->iova = pointer_to_uword (vec->base);
+      else
+	vec->iova = vlib_buffer_get_current_pa (vm, b);
+      vec->len = len;
+      size -= len;
+      vec++;
+      *n_seg += 1;
+    }
+
+  if (size)
+    return -1;
+
+  return 0;
+}
+
+static_always_inline u64
+compute_ofs_linked_alg (vnet_crypto_async_frame_elt_t * fe, i16 * min_ofs,
+			u32 * max_end)
+{
+  union rte_crypto_sym_ofs ofs;
+  u32 crypto_end = fe->crypto_start_offset + fe->crypto_total_length;
+  u32 integ_end = fe->integ_start_offset + fe->crypto_total_length +
+    fe->integ_length_adj;
+
+  *min_ofs = clib_min (fe->crypto_start_offset, fe->integ_start_offset);
+  *max_end = clib_max (crypto_end, integ_end);
+
+  ofs.ofs.cipher.head = fe->crypto_start_offset - *min_ofs;
+  ofs.ofs.cipher.tail = *max_end - crypto_end;
+  ofs.ofs.auth.head = fe->integ_start_offset - *min_ofs;
+  ofs.ofs.auth.tail = *max_end - integ_end;
+
+  return ofs.raw;
+}
+
+static_always_inline int
+cryptodev_frame_linked_algs_enqueue (vlib_main_t * vm,
+				     vnet_crypto_async_frame_t * frame,
+				     cryptodev_op_type_t op_type)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_engine_thread_t *cet = cmt->per_thread_data + vm->thread_index;
+  vnet_crypto_async_frame_elt_t *fe;
+  struct rte_crypto_vec *vec;
+  struct rte_crypto_data iv_vec, digest_vec;
+  vlib_buffer_t **b;
+  u32 n_elts;
+  cryptodev_key_t *key;
+  u32 last_key_index;
+  union rte_crypto_sym_ofs cofs;
+  i16 min_ofs;
+  u32 max_end;
+
+  n_elts = frame->n_elts;
+
+  if (PREDICT_FALSE (CRYPTODEV_MAX_INFLIGHT - cet->inflight < n_elts))
+    {
+      cryptodev_mark_frame_err_status (frame,
+				       VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+      return -1;
+    }
+
+  vlib_get_buffers (vm, frame->buffer_indices, cet->b, frame->n_elts);
+
+  vec = cet->vec;
+  b = cet->b;
+
+  fe = frame->elts;
+
+  key = pool_elt_at_index (cmt->keys, fe->key_index);
+  last_key_index = fe->key_index;
+
+  if (PREDICT_FALSE
+      (rte_cryptodev_dp_configure_service
+       (cet->cryptodev_id, cet->cryptodev_q, RTE_CRYPTO_DP_SYM_CHAIN,
+	RTE_CRYPTO_OP_WITH_SESSION,
+	(union rte_cryptodev_session_ctx) key->keys[op_type], cet->dp_service,
+	0) < 0))
+    {
+      cryptodev_mark_frame_err_status (frame,
+				       VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+      return -1;
+    }
+
+  cofs.raw = compute_ofs_linked_alg (fe, &min_ofs, &max_end);
+
+  while (n_elts)
+    {
+      u16 n_seg = 1;
+      int status;
+
+      if (n_elts > 2)
+	{
+	  CLIB_PREFETCH (&fe[1], CLIB_CACHE_LINE_BYTES, LOAD);
+	  CLIB_PREFETCH (&fe[2], CLIB_CACHE_LINE_BYTES, LOAD);
+	  vlib_prefetch_buffer_header (b[1], LOAD);
+	  vlib_prefetch_buffer_header (b[2], LOAD);
+	}
+
+      if (PREDICT_FALSE (last_key_index != fe->key_index))
+	{
+	  cofs.raw = compute_ofs_linked_alg (fe, &min_ofs, &max_end);
+
+	  key = pool_elt_at_index (cmt->keys, fe->key_index);
+	  last_key_index = fe->key_index;
+
+	  if (PREDICT_FALSE
+	      (rte_cryptodev_dp_configure_service
+	       (cet->cryptodev_id, cet->cryptodev_q, RTE_CRYPTO_DP_SYM_CHAIN,
+		RTE_CRYPTO_OP_WITH_SESSION,
+		(union rte_cryptodev_session_ctx) key->keys[op_type],
+		cet->dp_service, 1) < 0))
+	    {
+	      cryptodev_mark_frame_err_status (frame,
+					       VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+	      return -1;
+	    }
+	}
+
+      vec->len = max_end - min_ofs;
+      if (cmt->iova_mode == RTE_IOVA_VA)
+	{
+	  vec->base = (void *) (b[0]->data + min_ofs);
+	  vec->iova = pointer_to_uword (b[0]->data) + min_ofs;
+	  iv_vec.base = (void *) fe->iv;
+	  iv_vec.iova = pointer_to_uword (fe->iv);
+	  digest_vec.base = (void *) fe->tag;
+	  digest_vec.iova = pointer_to_uword (fe->tag);
+	}
+      else
+	{
+	  vec->base = (void *) (b[0]->data + min_ofs);
+	  vec->iova = vlib_buffer_get_pa (vm, b[0]) + min_ofs;
+	  iv_vec.base = (void *) fe->iv;
+	  iv_vec.iova = vlib_physmem_get_pa (vm, fe->iv);
+	  digest_vec.base = (void *) fe->tag;
+	  digest_vec.iova = vlib_physmem_get_pa (vm, fe->digest);
+	}
+
+      if (PREDICT_FALSE (fe->flags & VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS))
+	{
+	  vec->len = b[0]->current_data + b[0]->current_length - min_ofs;
+	  if (cryptodev_frame_build_sgl
+	      (vm, cmt->iova_mode, vec, &n_seg, b[0],
+	       max_end - min_ofs - vec->len) < 0)
+	    {
+	      cryptodev_mark_frame_err_status (frame,
+					       VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+	      return -1;
+	    }
+	}
+
+      status = rte_cryptodev_dp_submit_single_job (cet->dp_service,
+						   vec, n_seg, cofs, &iv_vec,
+						   &digest_vec, 0,
+						   (void *) frame);
+      if (status < 0)
+	{
+	  cryptodev_mark_frame_err_status (frame,
+					   VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+	  return -1;
+	}
+
+      b++;
+      fe++;
+      n_elts--;
+    }
+
+  rte_cryptodev_dp_submit_done (cet->dp_service, frame->n_elts);
+  cet->inflight += frame->n_elts;
+
+  return 0;
+}
+
+static_always_inline int
+cryptodev_frame_gcm_enqueue (vlib_main_t * vm,
+			     vnet_crypto_async_frame_t * frame,
+			     cryptodev_op_type_t op_type, u8 aad_len)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_engine_thread_t *cet = cmt->per_thread_data + vm->thread_index;
+  vnet_crypto_async_frame_elt_t *fe;
+  vlib_buffer_t **b;
+  u32 n_elts;
+  cryptodev_key_t *key;
+  u32 last_key_index;
+  union rte_crypto_sym_ofs cofs;
+  struct rte_crypto_vec *vec;
+  struct rte_crypto_data iv_vec, digest_vec, aad_vec;
+  u8 sess_aad_len;
+
+  n_elts = frame->n_elts;
+
+  if (PREDICT_FALSE (CRYPTODEV_MAX_INFLIGHT - cet->inflight < n_elts))
+    {
+      cryptodev_mark_frame_err_status (frame,
+				       VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+      return -1;
+    }
+
+  vlib_get_buffers (vm, frame->buffer_indices, cet->b, frame->n_elts);
+
+  vec = cet->vec;
+  fe = frame->elts;
+  b = cet->b;
+
+  cofs.raw = 0;
+
+  key = pool_elt_at_index (cmt->keys, fe->key_index);
+  last_key_index = fe->key_index;
+  sess_aad_len = (u8) key->keys[op_type]->opaque_data;
+  if (PREDICT_FALSE (sess_aad_len != aad_len))
+    cryptodev_sess_handler (vm, VNET_CRYPTO_KEY_OP_MODIFY,
+			    fe->key_index, aad_len);
+
+  if (PREDICT_FALSE
+      (rte_cryptodev_dp_configure_service
+       (cet->cryptodev_id, cet->cryptodev_q, RTE_CRYPTO_DP_SYM_AEAD,
+	RTE_CRYPTO_OP_WITH_SESSION,
+	(union rte_cryptodev_session_ctx) key->keys[op_type], cet->dp_service,
+	0) < 0))
+    {
+      cryptodev_mark_frame_err_status (frame,
+				       VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+      return -1;
+    }
+
+  while (n_elts)
+    {
+      u32 aad_offset = ((cet->aad_index++) & CRYPTODEV_AAD_MASK) << 4;
+      int status;
+      u16 n_seg = 1;
+
+      if (n_elts > 1)
+	{
+	  CLIB_PREFETCH (&fe[1], CLIB_CACHE_LINE_BYTES, LOAD);
+	  vlib_prefetch_buffer_header (b[1], LOAD);
+	}
+
+      if (last_key_index != fe->key_index)
+	{
+	  key = pool_elt_at_index (cmt->keys, fe->key_index);
+	  sess_aad_len = (u8) key->keys[op_type]->opaque_data;
+	  if (PREDICT_FALSE (sess_aad_len != aad_len))
+	    {
+	      cryptodev_sess_handler (vm, VNET_CRYPTO_KEY_OP_MODIFY,
+				      fe->key_index, aad_len);
+	    }
+	  last_key_index = fe->key_index;
+
+	  if (PREDICT_FALSE
+	      (rte_cryptodev_dp_configure_service
+	       (cet->cryptodev_id, cet->cryptodev_q, RTE_CRYPTO_DP_SYM_AEAD,
+		RTE_CRYPTO_OP_WITH_SESSION,
+		(union rte_cryptodev_session_ctx) key->keys[op_type],
+		cet->dp_service, 1) < 0))
+	    {
+	      cryptodev_mark_frame_err_status (frame,
+					       VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+	      return -1;
+	    }
+	}
+
+      if (cmt->iova_mode == RTE_IOVA_VA)
+	{
+	  vec[0].base = (void *) (b[0]->data + fe->crypto_start_offset);
+	  vec[0].iova = pointer_to_uword (vec[0].base);
+	  vec[0].len = fe->crypto_total_length;
+	  iv_vec.base = (void *) fe->iv;
+	  iv_vec.iova = pointer_to_uword (fe->iv);
+	  digest_vec.base = (void *) fe->tag;
+	  digest_vec.iova = pointer_to_uword (fe->tag);
+	  aad_vec.base = (void *) (cet->aad_buf + aad_offset);
+	  aad_vec.iova = cet->aad_phy_addr + aad_offset;
+	}
+      else
+	{
+	  vec[0].base = (void *) (b[0]->data + fe->crypto_start_offset);
+	  vec[0].iova =
+	    vlib_buffer_get_pa (vm, b[0]) + fe->crypto_start_offset;
+	  vec[0].len = fe->crypto_total_length;
+	  iv_vec.base = (void *) fe->iv;
+	  iv_vec.iova = vlib_physmem_get_pa (vm, fe->iv);
+	  aad_vec.base = (void *) (cet->aad_buf + aad_offset);
+	  aad_vec.iova = cet->aad_phy_addr + aad_offset;
+	  digest_vec.base = (void *) fe->tag;
+	  digest_vec.iova = vlib_physmem_get_pa (vm, fe->tag);
+	}
+
+      if (aad_len == 8)
+	*(u64 *) (cet->aad_buf + aad_offset) = *(u64 *) fe->aad;
+      else
+	{
+	  /* aad_len == 12 */
+	  *(u64 *) (cet->aad_buf + aad_offset) = *(u64 *) fe->aad;
+	  *(u32 *) (cet->aad_buf + aad_offset + 8) = *(u32 *) (fe->aad + 8);
+	}
+
+      if (PREDICT_FALSE (fe->flags & VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS))
+	{
+	  vec[0].len = b[0]->current_data +
+	    b[0]->current_length - fe->crypto_start_offset;
+	  if (cryptodev_frame_build_sgl
+	      (vm, cmt->iova_mode, vec, &n_seg, b[0],
+	       fe->crypto_total_length - vec[0].len) < 0)
+	    {
+	      cryptodev_mark_frame_err_status (frame,
+					       VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+	      return -1;
+	    }
+	}
+
+      status =
+	rte_cryptodev_dp_submit_single_job (cet->dp_service, vec, n_seg, cofs,
+					    &iv_vec, &digest_vec, &aad_vec,
+					    (void *) frame);
+      if (PREDICT_FALSE (status < 0))
+	{
+	  cryptodev_mark_frame_err_status (frame,
+					   VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR);
+	  return -1;
+	}
+      fe++;
+      b++;
+      n_elts--;
+    }
+
+  rte_cryptodev_dp_submit_done (cet->dp_service, frame->n_elts);
+  cet->inflight += frame->n_elts;
+
+  return 0;
+}
+
+static u32
+cryptodev_get_frame_n_elts (void *frame)
+{
+  vnet_crypto_async_frame_t *f = (vnet_crypto_async_frame_t *) frame;
+  return f->n_elts;
+}
+
+static void
+cryptodev_post_dequeue (void *frame, u32 index, u8 is_op_success)
+{
+  vnet_crypto_async_frame_t *f = (vnet_crypto_async_frame_t *) frame;
+
+  f->elts[index].status = is_op_success ? VNET_CRYPTO_OP_STATUS_COMPLETED :
+    VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
+}
+
+#define GET_RING_OBJ(r, pos, f) do { \
+	vnet_crypto_async_frame_t **ring = (void *)&r[1];     \
+	f = ring[(r->cons.head + pos) & r->mask]; \
+} while (0)
+
+static_always_inline vnet_crypto_async_frame_t *
+cryptodev_frame_dequeue (vlib_main_t * vm, u32 * nb_elts_processed,
+			 u32 * enqueue_thread_idx)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_engine_thread_t *cet = cmt->per_thread_data + vm->thread_index;
+  vnet_crypto_async_frame_t *frame, *frame_ret = 0;
+  u32 n_deq, n_success;
+  u32 n_cached_frame = rte_ring_count (cet->cached_frame), n_room_left;
+  u8 no_job_to_deq = 0;
+  u16 inflight = cet->inflight;
+
+  n_room_left = CRYPTODEV_DEQ_CACHE_SZ - n_cached_frame - 1;
+
+  if (n_cached_frame)
+    {
+      u32 i;
+      for (i = 0; i < n_cached_frame; i++)
+	{
+	  vnet_crypto_async_frame_t *f;
+	  void *f_ret;
+	  u8 n_left, err, j;
+
+	  GET_RING_OBJ (cet->cached_frame, i, f);
+
+	  if (i < n_cached_frame - 2)
+	    {
+	      vnet_crypto_async_frame_t *f1, *f2;
+	      GET_RING_OBJ (cet->cached_frame, i + 1, f1);
+	      GET_RING_OBJ (cet->cached_frame, i + 2, f2);
+	      CLIB_PREFETCH (f1, CLIB_CACHE_LINE_BYTES, LOAD);
+	      CLIB_PREFETCH (f2, CLIB_CACHE_LINE_BYTES, LOAD);
+	    }
+
+	  n_left = f->state & 0x7f;
+	  err = f->state & 0x80;
+
+	  for (j = f->n_elts - n_left; j < f->n_elts && inflight; j++)
+	    {
+	      int ret =
+		rte_cryptodev_dp_sym_dequeue_single_job (cet->dp_service,
+							 &f_ret);
+	      if (ret < 0)
+		break;
+	      f->elts[j].status = ret == 1 ? VNET_CRYPTO_OP_STATUS_COMPLETED :
+		VNET_CRYPTO_OP_STATUS_FAIL_ENGINE_ERR;
+	      err |= ret << 7;
+	      inflight--;
+	    }
+
+	  if (j == f->n_elts)
+	    {
+	      if (i == 0)
+		{
+		  frame_ret = f;
+		  f->state = err ? VNET_CRYPTO_FRAME_STATE_ELT_ERROR :
+		    VNET_CRYPTO_FRAME_STATE_SUCCESS;
+		}
+	      else
+		{
+		  f->state = f->n_elts - j;
+		  f->state |= err;
+		}
+	      if (inflight)
+		continue;
+	    }
+
+	  /* to here f is not completed dequeued and no more job can be
+	   * dequeued
+	   */
+	  f->state = f->n_elts - j;
+	  f->state |= err;
+	  no_job_to_deq = 1;
+	  break;
+	}
+
+      if (frame_ret)
+	{
+	  rte_ring_sc_dequeue (cet->cached_frame, (void **) &frame_ret);
+	  n_room_left++;
+	}
+    }
+
+  /* no point to dequeue further */
+  if (!inflight || no_job_to_deq || !n_room_left)
+    goto end_deq;
+
+  n_deq = rte_cryptodev_dp_sym_dequeue (cet->dp_service,
+					cryptodev_get_frame_n_elts,
+					cryptodev_post_dequeue,
+					(void **) &frame, 0, &n_success);
+  if (!n_deq)
+    goto end_deq;
+
+  inflight -= n_deq;
+  no_job_to_deq = n_deq < frame->n_elts;
+  /* we have to cache the frame */
+  if (frame_ret || n_cached_frame || no_job_to_deq)
+    {
+      frame->state = frame->n_elts - n_deq;
+      frame->state |= ((n_success < n_deq) << 7);
+      rte_ring_sp_enqueue (cet->cached_frame, (void *) frame);
+      n_room_left--;
+    }
+  else
+    {
+      frame->state = n_success == frame->n_elts ?
+	VNET_CRYPTO_FRAME_STATE_SUCCESS : VNET_CRYPTO_FRAME_STATE_ELT_ERROR;
+      frame_ret = frame;
+    }
+
+  /* see if we can dequeue more */
+  while (inflight && n_room_left && !no_job_to_deq)
+    {
+      n_deq = rte_cryptodev_dp_sym_dequeue (cet->dp_service,
+					    cryptodev_get_frame_n_elts,
+					    cryptodev_post_dequeue,
+					    (void **) &frame, 0, &n_success);
+      if (!n_deq)
+	break;
+      inflight -= n_deq;
+      no_job_to_deq = n_deq < frame->n_elts;
+      frame->state = frame->n_elts - n_deq;
+      frame->state |= ((n_success < n_deq) << 7);
+      rte_ring_sp_enqueue (cet->cached_frame, (void *) frame);
+      n_room_left--;
+    }
+
+end_deq:
+  if (inflight < cet->inflight)
+    {
+      rte_cryptodev_dp_dequeue_done (cet->dp_service,
+				     cet->inflight - inflight);
+      cet->inflight = inflight;
+    }
+
+  if (frame_ret)
+    {
+      *nb_elts_processed = frame_ret->n_elts;
+      *enqueue_thread_idx = frame_ret->enqueue_thread_index;
+    }
+
+  return frame_ret;
+}
+
+/* *INDENT-OFF* */
+static_always_inline int
+cryptodev_enqueue_gcm_aad_8_enc (vlib_main_t * vm,
+				 vnet_crypto_async_frame_t * frame)
+{
+  return cryptodev_frame_gcm_enqueue (vm, frame,
+				      CRYPTODEV_OP_TYPE_ENCRYPT, 8);
+}
+static_always_inline int
+cryptodev_enqueue_gcm_aad_12_enc (vlib_main_t * vm,
+				 vnet_crypto_async_frame_t * frame)
+{
+  return cryptodev_frame_gcm_enqueue (vm, frame,
+				      CRYPTODEV_OP_TYPE_ENCRYPT, 12);
+}
+
+static_always_inline int
+cryptodev_enqueue_gcm_aad_8_dec (vlib_main_t * vm,
+				 vnet_crypto_async_frame_t * frame)
+{
+  return cryptodev_frame_gcm_enqueue (vm, frame,
+				      CRYPTODEV_OP_TYPE_DECRYPT, 8);
+}
+static_always_inline int
+cryptodev_enqueue_gcm_aad_12_dec (vlib_main_t * vm,
+				 vnet_crypto_async_frame_t * frame)
+{
+  return cryptodev_frame_gcm_enqueue (vm, frame,
+				      CRYPTODEV_OP_TYPE_DECRYPT, 12);
+}
+
+static_always_inline int
+cryptodev_enqueue_linked_alg_enc (vlib_main_t * vm,
+				  vnet_crypto_async_frame_t * frame)
+{
+  return cryptodev_frame_linked_algs_enqueue (vm, frame,
+					      CRYPTODEV_OP_TYPE_ENCRYPT);
+}
+
+static_always_inline int
+cryptodev_enqueue_linked_alg_dec (vlib_main_t * vm,
+				  vnet_crypto_async_frame_t * frame)
+{
+  return cryptodev_frame_linked_algs_enqueue (vm, frame,
+					      CRYPTODEV_OP_TYPE_DECRYPT);
+}
+
+typedef enum
+{
+  CRYPTODEV_RESOURCE_ASSIGN_AUTO = 0,
+  CRYPTODEV_RESOURCE_ASSIGN_UPDATE,
+} cryptodev_resource_assign_op_t;
+
+/**
+ *  assign a cryptodev resource to a worker.
+ *  @param cet: the worker thread data
+ *  @param cryptodev_inst_index: if op is "ASSIGN_AUTO" this param is ignored.
+ *  @param op: the assignment method.
+ *  @return: 0 if successfully, negative number otherwise.
+ **/
+static_always_inline int
+cryptodev_assign_resource (cryptodev_engine_thread_t * cet,
+			   u32 cryptodev_inst_index,
+			   cryptodev_resource_assign_op_t op)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_inst_t *cinst = 0;
+  uword idx;
+
+  /* assign resource is only allowed when no inflight op is in the queue */
+  if (cet->inflight)
+    return -EBUSY;
+
+  switch (op)
+    {
+    case CRYPTODEV_RESOURCE_ASSIGN_AUTO:
+      if (clib_bitmap_count_set_bits (cmt->active_cdev_inst_mask) >=
+	  vec_len (cmt->cryptodev_inst))
+	return -1;
+
+      clib_spinlock_lock (&cmt->tlock);
+      idx = clib_bitmap_first_clear (cmt->active_cdev_inst_mask);
+      clib_bitmap_set (cmt->active_cdev_inst_mask, idx, 1);
+      cinst = vec_elt_at_index (cmt->cryptodev_inst, idx);
+      cet->cryptodev_id = cinst->dev_id;
+      cet->cryptodev_q = cinst->q_id;
+      cet->dp_service = (struct rte_crypto_dp_service_ctx *)
+	  cinst->dp_service_buffer;
+      clib_spinlock_unlock (&cmt->tlock);
+      break;
+    case CRYPTODEV_RESOURCE_ASSIGN_UPDATE:
+      /* assigning a used cryptodev resource is not allowed */
+      if (clib_bitmap_get (cmt->active_cdev_inst_mask, cryptodev_inst_index)
+	  == 1)
+	return -EBUSY;
+      vec_foreach_index (idx, cmt->cryptodev_inst)
+      {
+	cinst = cmt->cryptodev_inst + idx;
+	if (cinst->dev_id == cet->cryptodev_id &&
+	    cinst->q_id == cet->cryptodev_q)
+	  break;
+      }
+      /* invalid existing worker resource assignment */
+      if (idx == vec_len (cmt->cryptodev_inst))
+	return -EINVAL;
+      clib_spinlock_lock (&cmt->tlock);
+      clib_bitmap_set_no_check (cmt->active_cdev_inst_mask, idx, 0);
+      clib_bitmap_set_no_check (cmt->active_cdev_inst_mask,
+				cryptodev_inst_index, 1);
+      cinst = cmt->cryptodev_inst + cryptodev_inst_index;
+      cet->cryptodev_id = cinst->dev_id;
+      cet->cryptodev_q = cinst->q_id;
+      cet->dp_service = (struct rte_crypto_dp_service_ctx *)
+	  cinst->dp_service_buffer;
+      clib_spinlock_unlock (&cmt->tlock);
+      break;
+    default:
+      return -EINVAL;
+    }
+  return 0;
+}
+
+static u8 *
+format_cryptodev_inst (u8 * s, va_list * args)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  u32 inst = va_arg (*args, u32);
+  cryptodev_inst_t *cit = cmt->cryptodev_inst + inst;
+  u32 thread_index = 0;
+  struct rte_cryptodev_info info;
+
+  rte_cryptodev_info_get (cit->dev_id, &info);
+  s = format (s, "%-25s%-10u", info.device->name, cit->q_id);
+
+  vec_foreach_index (thread_index, cmt->per_thread_data)
+  {
+    cryptodev_engine_thread_t *cet = cmt->per_thread_data + thread_index;
+    if (vlib_num_workers () > 0 && thread_index == 0)
+      continue;
+
+    if (cet->cryptodev_id == cit->dev_id && cet->cryptodev_q == cit->q_id)
+      {
+	s = format (s, "%u (%v)\n", thread_index,
+		    vlib_worker_threads[thread_index].name);
+	break;
+      }
+  }
+
+  if (thread_index == vec_len (cmt->per_thread_data))
+    s = format (s, "%s\n", "free");
+
+  return s;
+}
+
+static clib_error_t *
+cryptodev_show_assignment_fn (vlib_main_t * vm, unformat_input_t * input,
+			      vlib_cli_command_t * cmd)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  u32 inst;
+
+  vlib_cli_output (vm, "%-5s%-25s%-10s%s\n", "No.", "Name", "Queue-id",
+		   "Assigned-to");
+  if (vec_len (cmt->cryptodev_inst) == 0)
+    {
+      vlib_cli_output (vm, "(nil)\n");
+      return 0;
+    }
+
+  vec_foreach_index (inst, cmt->cryptodev_inst)
+    vlib_cli_output (vm, "%-5u%U", inst, format_cryptodev_inst, inst);
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (show_cryptodev_assignment, static) = {
+    .path = "show cryptodev assignment",
+    .short_help = "show cryptodev assignment",
+    .function = cryptodev_show_assignment_fn,
+};
+
+static clib_error_t *
+cryptodev_set_assignment_fn (vlib_main_t * vm, unformat_input_t * input,
+			     vlib_cli_command_t * cmd)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_engine_thread_t *cet;
+  unformat_input_t _line_input, *line_input = &_line_input;
+  u32 thread_index, inst_index;
+  u32 thread_present = 0, inst_present = 0;
+  clib_error_t *error = 0;
+  int ret;
+
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "thread %u", &thread_index))
+	thread_present = 1;
+      else if (unformat (line_input, "resource %u", &inst_index))
+	inst_present = 1;
+      else
+	{
+	  error = clib_error_return (0, "unknown input `%U'",
+				     format_unformat_error, line_input);
+	  return error;
+	}
+    }
+
+  if (!thread_present || !inst_present)
+    {
+      error = clib_error_return (0, "mandatory argument(s) missing");
+      return error;
+    }
+
+  if (thread_index == 0 && vlib_num_workers () > 0)
+    {
+      error =
+	clib_error_return (0, "assign crypto resource for master thread");
+      return error;
+    }
+
+  if (thread_index > vec_len (cmt->per_thread_data) ||
+      inst_index > vec_len (cmt->cryptodev_inst))
+    {
+      error = clib_error_return (0, "wrong thread id or resource id");
+      return error;
+    }
+
+  cet = cmt->per_thread_data + thread_index;
+  ret = cryptodev_assign_resource (cet, inst_index,
+				   CRYPTODEV_RESOURCE_ASSIGN_UPDATE);
+  if (ret)
+    {
+      error = clib_error_return (0, "cryptodev_assign_resource returned %i",
+				 ret);
+      return error;
+    }
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (set_cryptodev_assignment, static) = {
+    .path = "set cryptodev assignment",
+    .short_help = "set cryptodev assignment thread <thread_index> "
+	"resource <inst_index>",
+    .function = cryptodev_set_assignment_fn,
+};
+
+static int
+check_cryptodev_alg_support (u32 dev_id)
+{
+  const struct rte_cryptodev_symmetric_capability *cap;
+  struct rte_cryptodev_sym_capability_idx cap_idx;
+
+#define _(a, b, c, d, e, f) \
+  cap_idx.type = RTE_CRYPTO_SYM_XFORM_##b; \
+  cap_idx.algo.aead = RTE_CRYPTO_##b##_##c; \
+  cap = rte_cryptodev_sym_capability_get (dev_id, &cap_idx); \
+  if (!cap) \
+    return -RTE_CRYPTO_##b##_##c; \
+  else \
+    { \
+      if (cap->aead.digest_size.min > e || cap->aead.digest_size.max < e) \
+	return -RTE_CRYPTO_##b##_##c; \
+      if (cap->aead.aad_size.min > f || cap->aead.aad_size.max < f) \
+	return -RTE_CRYPTO_##b##_##c; \
+      if (cap->aead.iv_size.min > d || cap->aead.iv_size.max < d) \
+	return -RTE_CRYPTO_##b##_##c; \
+    }
+
+  foreach_vnet_aead_crypto_conversion
+#undef _
+
+#define _(a, b, c, d) \
+  cap_idx.type = RTE_CRYPTO_SYM_XFORM_CIPHER; \
+  cap_idx.algo.cipher = RTE_CRYPTO_CIPHER_##b; \
+  cap = rte_cryptodev_sym_capability_get (dev_id, &cap_idx); \
+  if (!cap) \
+    return -RTE_CRYPTO_CIPHER_##b; \
+  cap_idx.type = RTE_CRYPTO_SYM_XFORM_AUTH; \
+  cap_idx.algo.auth = RTE_CRYPTO_AUTH_##c##_HMAC; \
+  cap = rte_cryptodev_sym_capability_get (dev_id, &cap_idx); \
+  if (!cap) \
+    return -RTE_CRYPTO_AUTH_##c;
+
+  foreach_cryptodev_link_async_alg
+#undef _
+    return 0;
+}
+
+static u32
+cryptodev_count_queue (u32 numa)
+{
+  struct rte_cryptodev_info info;
+  u32 n_cryptodev = rte_cryptodev_count ();
+  u32 i, q_count = 0;
+
+  for (i = 0; i < n_cryptodev; i++)
+    {
+      rte_cryptodev_info_get (i, &info);
+      if (rte_cryptodev_socket_id (i) != numa)
+	{
+	  clib_warning ("DPDK crypto resource %s is in different numa node "
+	      "as %u, ignored", info.device->name, numa);
+	  continue;
+	}
+      q_count += info.max_nb_queue_pairs;
+    }
+
+  return q_count;
+}
+
+static int
+cryptodev_configure (vlib_main_t *vm, u32 cryptodev_id)
+{
+  struct rte_cryptodev_info info;
+  struct rte_cryptodev *cdev;
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_numa_data_t *numa_data = vec_elt_at_index (cmt->per_numa_data,
+						       vm->numa_node);
+  u32 dp_size = 0;
+  u32 i;
+  int ret;
+
+  cdev = rte_cryptodev_pmd_get_dev (cryptodev_id);
+  rte_cryptodev_info_get (cryptodev_id, &info);
+
+  if (!(info.feature_flags & RTE_CRYPTODEV_FF_DATA_PLANE_SERVICE))
+    return -1;
+
+  ret = check_cryptodev_alg_support (cryptodev_id);
+  if (ret != 0)
+    return ret;
+
+
+
+  /** If the device is already started, we reuse it, otherwise configure
+   *  both the device and queue pair.
+   **/
+  if (!cdev->data->dev_started)
+    {
+      struct rte_cryptodev_config cfg;
+
+      cfg.socket_id = vm->numa_node;
+      cfg.nb_queue_pairs = info.max_nb_queue_pairs;
+
+      rte_cryptodev_configure (cryptodev_id, &cfg);
+
+      for (i = 0; i < info.max_nb_queue_pairs; i++)
+	{
+	  struct rte_cryptodev_qp_conf qp_cfg;
+
+	  qp_cfg.mp_session = numa_data->sess_pool;
+	  qp_cfg.mp_session_private = numa_data->sess_priv_pool;
+	  qp_cfg.nb_descriptors = CRYPTODEV_NB_CRYPTO_OPS;
+
+	  ret = rte_cryptodev_queue_pair_setup (cryptodev_id, i, &qp_cfg,
+						vm->numa_node);
+	  if (ret)
+	    break;
+	}
+      if (i != info.max_nb_queue_pairs)
+	return -1;
+
+      /* start the device */
+      rte_cryptodev_start (i);
+    }
+
+  ret = rte_cryptodev_get_dp_service_ctx_data_size (cryptodev_id);
+  if (ret < 0)
+    return -1;
+  dp_size = ret;
+
+  for (i = 0; i < info.max_nb_queue_pairs; i++)
+    {
+      cryptodev_inst_t *cdev_inst;
+      vec_add2(cmt->cryptodev_inst, cdev_inst, 1);
+      cdev_inst->desc = vec_new (char, strlen (info.device->name) + 10);
+      cdev_inst->dev_id = cryptodev_id;
+      cdev_inst->q_id = i;
+      vec_validate_aligned(cdev_inst->dp_service_buffer, dp_size, 8);
+      snprintf (cdev_inst->desc, strlen (info.device->name) + 9,
+		"%s_q%u", info.device->name, i);
+    }
+
+  return 0;
+}
+
+static int
+cryptodev_cmp (void *v1, void *v2)
+{
+  cryptodev_inst_t *a1 = v1;
+  cryptodev_inst_t *a2 = v2;
+
+  if (a1->q_id > a2->q_id)
+    return 1;
+  if (a1->q_id < a2->q_id)
+    return -1;
+  return 0;
+}
+
+static int
+cryptodev_probe (vlib_main_t *vm, u32 n_workers)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  u32 n_queues = cryptodev_count_queue (vm->numa_node);
+  u32 i;
+  int ret;
+
+  if (n_queues < n_workers)
+    return -1;
+
+  for (i = 0; i < rte_cryptodev_count (); i++)
+    {
+      ret = cryptodev_configure (vm, i);
+      if (ret)
+	continue;
+    }
+
+  vec_sort_with_function(cmt->cryptodev_inst, cryptodev_cmp);
+
+  /* if there is not enough device stop cryptodev */
+  if (vec_len (cmt->cryptodev_inst) < n_workers)
+    return -1;
+
+  return 0;
+}
+
+static int
+cryptodev_get_session_sz (vlib_main_t *vm, u32 n_workers)
+{
+  u32 sess_data_sz = 0, i;
+
+  if (rte_cryptodev_count () == 0)
+    {
+      clib_warning ("Failed");
+      return -1;
+    }
+
+  for (i = 0; i < rte_cryptodev_count (); i++)
+    {
+      u32 dev_sess_sz = rte_cryptodev_sym_get_private_session_size (i);
+
+      sess_data_sz = dev_sess_sz > sess_data_sz ? dev_sess_sz : sess_data_sz;
+    }
+
+  return sess_data_sz;
+}
+
+static void
+dpdk_disable_cryptodev_engine (vlib_main_t * vm)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  cryptodev_numa_data_t *numa_data;
+  cryptodev_engine_thread_t *ptd;
+
+  vec_validate (cmt->per_numa_data, vm->numa_node);
+  numa_data = vec_elt_at_index (cmt->per_numa_data, vm->numa_node);
+
+  if (numa_data->sess_pool)
+    rte_mempool_free (numa_data->sess_pool);
+  if (numa_data->sess_priv_pool)
+    rte_mempool_free (numa_data->sess_priv_pool);
+
+  vec_foreach (ptd, cmt->per_thread_data)
+    {
+      if (ptd->aad_buf)
+	rte_free (ptd->aad_buf);
+      if (ptd->cached_frame)
+	rte_ring_free (ptd->cached_frame);
+    }
+}
+
+clib_error_t *
+dpdk_cryptodev_init (vlib_main_t * vm)
+{
+  cryptodev_main_t *cmt = &cryptodev_main;
+  vlib_thread_main_t *tm = vlib_get_thread_main ();
+  cryptodev_engine_thread_t *ptd;
+  cryptodev_numa_data_t *numa_data;
+  struct rte_mempool *mp;
+  u32 skip_master = vlib_num_workers () > 0;
+  u32 n_workers = tm->n_vlib_mains - skip_master;
+  u32 numa = vm->numa_node;
+  i32 sess_sz;
+  u32 eidx;
+  u32 i;
+  u8 *name = 0;
+  clib_error_t *error;
+
+  cmt->iova_mode = rte_eal_iova_mode ();
+
+  sess_sz = cryptodev_get_session_sz(vm, n_workers);
+  if (sess_sz < 0)
+    {
+      error = clib_error_return (0, "Not enough cryptodevs");
+      return error;
+    }
+
+  vec_validate (cmt->per_numa_data, vm->numa_node);
+  numa_data = vec_elt_at_index (cmt->per_numa_data, numa);
+
+  /* create session pool for the numa node */
+  name = format (0, "vcryptodev_sess_pool_%u%c", numa, 0);
+  mp = rte_cryptodev_sym_session_pool_create ((char *) name,
+					      CRYPTODEV_NB_SESSION,
+					      0, 0, 0, numa);
+  if (!mp)
+    {
+      error = clib_error_return (0, "Not enough memory for mp %s", name);
+      goto err_handling;
+    }
+  vec_free (name);
+
+  numa_data->sess_pool = mp;
+
+  /* create session private pool for the numa node */
+  name = format (0, "cryptodev_sess_pool_%u%c", numa, 0);
+  mp = rte_mempool_create ((char *) name, CRYPTODEV_NB_SESSION, sess_sz, 0,
+			   0, NULL, NULL, NULL, NULL, numa, 0);
+  if (!mp)
+    {
+      error = clib_error_return (0, "Not enough memory for mp %s", name);
+      vec_free (name);
+      goto err_handling;
+    }
+
+  vec_free (name);
+
+  numa_data->sess_priv_pool = mp;
+
+  /* probe all cryptodev devices and get queue info */
+  if (cryptodev_probe (vm, n_workers) < 0)
+    {
+      error = clib_error_return (0, "Failed to configure cryptodev");
+      goto err_handling;
+    }
+
+  clib_bitmap_vec_validate (cmt->active_cdev_inst_mask, tm->n_vlib_mains);
+  clib_spinlock_init (&cmt->tlock);
+
+  vec_validate_aligned(cmt->per_thread_data, tm->n_vlib_mains - 1,
+		       CLIB_CACHE_LINE_BYTES);
+  for (i = skip_master; i < tm->n_vlib_mains; i++)
+    {
+      ptd = cmt->per_thread_data + i;
+      cryptodev_assign_resource (ptd, 0, CRYPTODEV_RESOURCE_ASSIGN_AUTO);
+      ptd->aad_buf = rte_zmalloc_socket (0, CRYPTODEV_NB_CRYPTO_OPS *
+					 CRYPTODEV_MAX_AAD_SIZE,
+					 CLIB_CACHE_LINE_BYTES,
+					 numa);
+      if (ptd->aad_buf == 0)
+	{
+	  error = clib_error_return (0, "Failed to alloc aad buf");
+	  goto err_handling;
+	}
+
+      ptd->aad_phy_addr = rte_malloc_virt2iova (ptd->aad_buf);
+
+      name = format (0, "cache_frame_ring_%u%u", numa, i);
+      ptd->cached_frame = rte_ring_create ((char *)name,
+					   CRYPTODEV_DEQ_CACHE_SZ, numa,
+					   RING_F_SC_DEQ | RING_F_SP_ENQ);
+
+      if (ptd->cached_frame == 0)
+	{
+	  error = clib_error_return (0, "Failed to frame ring");
+	  goto err_handling;
+	}
+      vec_free (name);
+    }
+
+  /* register handler */
+  eidx = vnet_crypto_register_engine (vm, "dpdk_cryptodev", 79,
+                                      "DPDK Cryptodev Engine");
+
+#define _(a, b, c, d, e, f) \
+  vnet_crypto_register_async_handler \
+    (vm, eidx, VNET_CRYPTO_OP_##a##_TAG##e##_AAD##f##_ENC, \
+	cryptodev_enqueue_gcm_aad_##f##_enc,\
+	cryptodev_frame_dequeue); \
+  vnet_crypto_register_async_handler \
+    (vm, eidx, VNET_CRYPTO_OP_##a##_TAG##e##_AAD##f##_DEC, \
+	cryptodev_enqueue_gcm_aad_##f##_dec, \
+	cryptodev_frame_dequeue);
+
+  foreach_vnet_aead_crypto_conversion
+#undef _
+
+#define _(a, b, c, d) \
+  vnet_crypto_register_async_handler \
+    (vm, eidx, VNET_CRYPTO_OP_##a##_##c##_TAG##d##_ENC, \
+	cryptodev_enqueue_linked_alg_enc, \
+	cryptodev_frame_dequeue); \
+  vnet_crypto_register_async_handler \
+    (vm, eidx, VNET_CRYPTO_OP_##a##_##c##_TAG##d##_DEC, \
+	cryptodev_enqueue_linked_alg_dec, \
+	cryptodev_frame_dequeue);
+
+    foreach_cryptodev_link_async_alg
+#undef _
+
+  vnet_crypto_register_key_handler (vm, eidx, cryptodev_key_handler);
+
+  return 0;
+
+err_handling:
+  dpdk_disable_cryptodev_engine (vm);
+
+  return error;
+}
+/* *INDENT-On* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */