dpdk: be a plugin

Change-Id: I238258cdeb77035adc5e88903d824593d0a1da90
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 430 insertions, 0 deletions

diff --git a/src/plugins/dpdk/ipsec/ipsec.c b/src/plugins/dpdk/ipsec/ipsec.c
new file mode 100644
index 00000000..16bec20a
--- /dev/null
+++ b/src/plugins/dpdk/ipsec/ipsec.c
@@ -0,0 +1,430 @@
+/*
+ * Copyright (c) 2016 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 <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/api_errno.h>
+#include <vnet/ipsec/ipsec.h>
+#include <vlib/node_funcs.h>
+
+#include <dpdk/device/dpdk.h>
+#include <dpdk/ipsec/ipsec.h>
+#include <dpdk/ipsec/esp.h>
+
+#define DPDK_CRYPTO_NB_SESS_OBJS  20000
+#define DPDK_CRYPTO_CACHE_SIZE	  512
+#define DPDK_CRYPTO_PRIV_SIZE	  128
+#define DPDK_CRYPTO_N_QUEUE_DESC  1024
+#define DPDK_CRYPTO_NB_COPS	  (1024 * 4)
+
+static int
+add_del_sa_sess (u32 sa_index, u8 is_add)
+{
+  dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
+  crypto_worker_main_t *cwm;
+  u8 skip_master = vlib_num_workers () > 0;
+
+  /* *INDENT-OFF* */
+  vec_foreach (cwm, dcm->workers_main)
+    {
+      crypto_sa_session_t *sa_sess;
+      u8 is_outbound;
+
+      if (skip_master)
+	{
+	  skip_master = 0;
+	  continue;
+	}
+
+      for (is_outbound = 0; is_outbound < 2; is_outbound++)
+	{
+	  if (is_add)
+	    {
+	      pool_get (cwm->sa_sess_d[is_outbound], sa_sess);
+	    }
+	  else
+	    {
+	      u8 dev_id;
+
+	      sa_sess = pool_elt_at_index (cwm->sa_sess_d[is_outbound], sa_index);
+	      dev_id = cwm->qp_data[sa_sess->qp_index].dev_id;
+
+	      if (!sa_sess->sess)
+		continue;
+
+	      if (rte_cryptodev_sym_session_free(dev_id, sa_sess->sess))
+		{
+		  clib_warning("failed to free session");
+		  return -1;
+		}
+	      memset(sa_sess, 0, sizeof(sa_sess[0]));
+	    }
+	}
+    }
+  /* *INDENT-OFF* */
+
+  return 0;
+}
+
+static void
+update_qp_data (crypto_worker_main_t * cwm,
+		u8 cdev_id, u16 qp_id, u8 is_outbound, u16 * idx)
+{
+  crypto_qp_data_t *qpd;
+
+  /* *INDENT-OFF* */
+  vec_foreach_index (*idx, cwm->qp_data)
+    {
+      qpd = vec_elt_at_index(cwm->qp_data, *idx);
+
+      if (qpd->dev_id == cdev_id && qpd->qp_id == qp_id &&
+	  qpd->is_outbound == is_outbound)
+	  return;
+    }
+  /* *INDENT-ON* */
+
+  vec_add2 (cwm->qp_data, qpd, 1);
+
+  qpd->dev_id = cdev_id;
+  qpd->qp_id = qp_id;
+  qpd->is_outbound = is_outbound;
+}
+
+/*
+ * return:
+ * 	0: already exist
+ * 	1: mapped
+ */
+static int
+add_mapping (crypto_worker_main_t * cwm,
+	     u8 cdev_id, u16 qp, u8 is_outbound,
+	     const struct rte_cryptodev_capabilities *cipher_cap,
+	     const struct rte_cryptodev_capabilities *auth_cap)
+{
+  u16 qp_index;
+  uword key = 0, data, *ret;
+  crypto_worker_qp_key_t *p_key = (crypto_worker_qp_key_t *) & key;
+
+  p_key->cipher_algo = (u8) cipher_cap->sym.cipher.algo;
+  p_key->auth_algo = (u8) auth_cap->sym.auth.algo;
+  p_key->is_outbound = is_outbound;
+
+  ret = hash_get (cwm->algo_qp_map, key);
+  if (ret)
+    return 0;
+
+  update_qp_data (cwm, cdev_id, qp, is_outbound, &qp_index);
+
+  data = (uword) qp_index;
+  hash_set (cwm->algo_qp_map, key, data);
+
+  return 1;
+}
+
+/*
+ * return:
+ * 	0: already exist
+ * 	1: mapped
+ */
+static int
+add_cdev_mapping (crypto_worker_main_t * cwm,
+		  struct rte_cryptodev_info *dev_info, u8 cdev_id,
+		  u16 qp, u8 is_outbound)
+{
+  const struct rte_cryptodev_capabilities *i, *j;
+  u32 mapped = 0;
+
+  for (i = dev_info->capabilities; i->op != RTE_CRYPTO_OP_TYPE_UNDEFINED; i++)
+    {
+      if (i->sym.xform_type != RTE_CRYPTO_SYM_XFORM_CIPHER)
+	continue;
+
+      if (check_algo_is_supported (i, NULL) != 0)
+	continue;
+
+      for (j = dev_info->capabilities; j->op != RTE_CRYPTO_OP_TYPE_UNDEFINED;
+	   j++)
+	{
+	  if (j->sym.xform_type != RTE_CRYPTO_SYM_XFORM_AUTH)
+	    continue;
+
+	  if (check_algo_is_supported (j, NULL) != 0)
+	    continue;
+
+	  mapped |= add_mapping (cwm, cdev_id, qp, is_outbound, i, j);
+	}
+    }
+
+  return mapped;
+}
+
+static int
+check_cryptodev_queues ()
+{
+  u32 n_qs = 0;
+  u8 cdev_id;
+  u32 n_req_qs = 2;
+
+  if (vlib_num_workers () > 0)
+    n_req_qs = vlib_num_workers () * 2;
+
+  for (cdev_id = 0; cdev_id < rte_cryptodev_count (); cdev_id++)
+    {
+      struct rte_cryptodev_info cdev_info;
+
+      rte_cryptodev_info_get (cdev_id, &cdev_info);
+
+      if (!
+	  (cdev_info.feature_flags & RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING))
+	continue;
+
+      n_qs += cdev_info.max_nb_queue_pairs;
+    }
+
+  if (n_qs >= n_req_qs)
+    return 0;
+  else
+    return -1;
+}
+
+static clib_error_t *
+dpdk_ipsec_check_support (ipsec_sa_t * sa)
+{
+  if (sa->crypto_alg == IPSEC_CRYPTO_ALG_AES_GCM_128)
+    {
+      if (sa->integ_alg != IPSEC_INTEG_ALG_NONE)
+	return clib_error_return (0, "unsupported integ-alg %U with "
+				  "crypto-algo aes-gcm-128",
+				  format_ipsec_integ_alg, sa->integ_alg);
+      sa->integ_alg = IPSEC_INTEG_ALG_AES_GCM_128;
+    }
+  else
+    {
+      if (sa->integ_alg == IPSEC_INTEG_ALG_NONE ||
+	  sa->integ_alg == IPSEC_INTEG_ALG_AES_GCM_128)
+	return clib_error_return (0, "unsupported integ-alg %U",
+				  format_ipsec_integ_alg, sa->integ_alg);
+    }
+
+  return 0;
+}
+
+static uword
+dpdk_ipsec_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+		    vlib_frame_t * f)
+{
+  dpdk_config_main_t *conf = &dpdk_config_main;
+  ipsec_main_t *im = &ipsec_main;
+  dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
+  vlib_thread_main_t *tm = vlib_get_thread_main ();
+  struct rte_cryptodev_config dev_conf;
+  struct rte_cryptodev_qp_conf qp_conf;
+  struct rte_cryptodev_info cdev_info;
+  struct rte_mempool *rmp;
+  i32 dev_id, ret;
+  u32 i, skip_master;
+
+  if (!conf->cryptodev)
+    {
+      clib_warning ("DPDK Cryptodev support is disabled, "
+		    "default to OpenSSL IPsec");
+      return 0;
+    }
+
+  if (check_cryptodev_queues () < 0)
+    {
+      conf->cryptodev = 0;
+      clib_warning ("not enough Cryptodevs, default to OpenSSL IPsec");
+      return 0;
+    }
+
+  vec_alloc (dcm->workers_main, tm->n_vlib_mains);
+  _vec_len (dcm->workers_main) = tm->n_vlib_mains;
+
+  fprintf (stdout, "DPDK Cryptodevs info:\n");
+  fprintf (stdout, "dev_id\tn_qp\tnb_obj\tcache_size\n");
+  /* HW cryptodevs have higher dev_id, use HW first */
+  for (dev_id = rte_cryptodev_count () - 1; dev_id >= 0; dev_id--)
+    {
+      u16 max_nb_qp, qp = 0;
+      skip_master = vlib_num_workers () > 0;
+
+      rte_cryptodev_info_get (dev_id, &cdev_info);
+
+      if (!
+	  (cdev_info.feature_flags & RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING))
+	continue;
+
+      max_nb_qp = cdev_info.max_nb_queue_pairs;
+
+      for (i = 0; i < tm->n_vlib_mains; i++)
+	{
+	  u8 is_outbound;
+	  crypto_worker_main_t *cwm;
+	  uword *map;
+
+	  if (skip_master)
+	    {
+	      skip_master = 0;
+	      continue;
+	    }
+
+	  cwm = vec_elt_at_index (dcm->workers_main, i);
+	  map = cwm->algo_qp_map;
+
+	  if (!map)
+	    {
+	      map = hash_create (0, sizeof (crypto_worker_qp_key_t));
+	      if (!map)
+		{
+		  clib_warning ("unable to create hash table for worker %u",
+				vlib_mains[i]->cpu_index);
+		  goto error;
+		}
+	      cwm->algo_qp_map = map;
+	    }
+
+	  for (is_outbound = 0; is_outbound < 2 && qp < max_nb_qp;
+	       is_outbound++)
+	    qp += add_cdev_mapping (cwm, &cdev_info, dev_id, qp, is_outbound);
+	}
+
+      if (qp == 0)
+	continue;
+
+      dev_conf.socket_id = rte_cryptodev_socket_id (dev_id);
+      dev_conf.nb_queue_pairs = cdev_info.max_nb_queue_pairs;
+      dev_conf.session_mp.nb_objs = DPDK_CRYPTO_NB_SESS_OBJS;
+      dev_conf.session_mp.cache_size = DPDK_CRYPTO_CACHE_SIZE;
+
+      ret = rte_cryptodev_configure (dev_id, &dev_conf);
+      if (ret < 0)
+	{
+	  clib_warning ("cryptodev %u config error", dev_id);
+	  goto error;
+	}
+
+      qp_conf.nb_descriptors = DPDK_CRYPTO_N_QUEUE_DESC;
+      for (qp = 0; qp < dev_conf.nb_queue_pairs; qp++)
+	{
+	  ret = rte_cryptodev_queue_pair_setup (dev_id, qp, &qp_conf,
+						dev_conf.socket_id);
+	  if (ret < 0)
+	    {
+	      clib_warning ("cryptodev %u qp %u setup error", dev_id, qp);
+	      goto error;
+	    }
+	}
+      vec_validate_aligned (dcm->cop_pools, dev_conf.socket_id,
+			    CLIB_CACHE_LINE_BYTES);
+
+      if (!vec_elt (dcm->cop_pools, dev_conf.socket_id))
+	{
+	  u8 *pool_name = format (0, "crypto_op_pool_socket%u%c",
+				  dev_conf.socket_id, 0);
+
+	  rmp = rte_crypto_op_pool_create ((char *) pool_name,
+					   RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+					   DPDK_CRYPTO_NB_COPS *
+					   (1 + vlib_num_workers ()),
+					   DPDK_CRYPTO_CACHE_SIZE,
+					   DPDK_CRYPTO_PRIV_SIZE,
+					   dev_conf.socket_id);
+	  vec_free (pool_name);
+
+	  if (!rmp)
+	    {
+	      clib_warning ("failed to allocate mempool on socket %u",
+			    dev_conf.socket_id);
+	      goto error;
+	    }
+	  vec_elt (dcm->cop_pools, dev_conf.socket_id) = rmp;
+	}
+
+      fprintf (stdout, "%u\t%u\t%u\t%u\n", dev_id, dev_conf.nb_queue_pairs,
+	       DPDK_CRYPTO_NB_SESS_OBJS, DPDK_CRYPTO_CACHE_SIZE);
+    }
+
+  dpdk_esp_init ();
+
+  /* Add new next node and set as default */
+  vlib_node_t *node, *next_node;
+
+  next_node = vlib_get_node_by_name (vm, (u8 *) "dpdk-esp-encrypt");
+  ASSERT (next_node);
+  node = vlib_get_node_by_name (vm, (u8 *) "ipsec-output-ip4");
+  ASSERT (node);
+  im->esp_encrypt_node_index = next_node->index;
+  im->esp_encrypt_next_index =
+    vlib_node_add_next (vm, node->index, next_node->index);
+
+  next_node = vlib_get_node_by_name (vm, (u8 *) "dpdk-esp-decrypt");
+  ASSERT (next_node);
+  node = vlib_get_node_by_name (vm, (u8 *) "ipsec-input-ip4");
+  ASSERT (node);
+  im->esp_decrypt_node_index = next_node->index;
+  im->esp_decrypt_next_index =
+    vlib_node_add_next (vm, node->index, next_node->index);
+
+  im->cb.check_support_cb = dpdk_ipsec_check_support;
+  im->cb.add_del_sa_sess_cb = add_del_sa_sess;
+
+  if (vec_len (vlib_mains) == 0)
+    vlib_node_set_state (&vlib_global_main, dpdk_crypto_input_node.index,
+			 VLIB_NODE_STATE_POLLING);
+  else
+    for (i = 1; i < tm->n_vlib_mains; i++)
+      vlib_node_set_state (vlib_mains[i], dpdk_crypto_input_node.index,
+			   VLIB_NODE_STATE_POLLING);
+
+  /* TODO cryptodev counters */
+
+  return 0;
+
+error:
+  ;
+  crypto_worker_main_t *cwm;
+  struct rte_mempool **mp;
+  /* *INDENT-OFF* */
+  vec_foreach (cwm, dcm->workers_main)
+    hash_free (cwm->algo_qp_map);
+
+  vec_foreach (mp, dcm->cop_pools)
+    {
+      if (mp)
+	rte_mempool_free (mp[0]);
+    }
+  /* *INDENT-ON* */
+  vec_free (dcm->workers_main);
+  vec_free (dcm->cop_pools);
+
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_ipsec_process_node,static) = {
+    .function = dpdk_ipsec_process,
+    .type = VLIB_NODE_TYPE_PROCESS,
+    .name = "dpdk-ipsec-process",
+    .process_log2_n_stack_bytes = 17,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */