[HICN-574] Host stack plugin for VPP.

Signed-off-by: Mauro Sardara <msardara@cisco.com>
Change-Id: I8d8fdffef31a7013265d6529c5f52f3d5ec70d18
Signed-off-by: Mauro Sardara <msardara@cisco.com>
Signed-off-by: Mauro <you@example.com>
Signed-off-by: Mauro Sardara <msardara@cisco.com>

1 files changed, 0 insertions, 323 deletions

diff --git a/hicn-plugin/src/strategy_node.c b/hicn-plugin/src/strategy_node.c
deleted file mode 100644
index 0659a871a..000000000
--- a/hicn-plugin/src/strategy_node.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * Copyright (c) 2017-2020 Cisco 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/vnet.h>
-
-#include "hicn.h"
-#include "parser.h"
-#include "strategy.h"
-#include "strategy_dpo_ctx.h"
-#include "face_db.h"
-#include "infra.h"
-#include "mgmt.h"
-#include "pcs.h"
-#include "state.h"
-#include "strategies/strategy_mw.h"
-
-/* Registration struct for a graph node */
-vlib_node_registration_t hicn_strategy_node;
-
-/*
- * Node context data (to be used in all the strategy nodes); we think this is
- * per-thread/instance
- */
-typedef struct hicn_strategy_runtime_s
-{
-  int id;
-  hicn_pit_cs_t *pitcs;
-} hicn_strategy_runtime_t;
-
-/* Stats string values */
-static char *hicn_strategy_error_strings[] = {
-#define _(sym, string) string,
-  foreach_hicnfwd_error
-#undef _
-};
-
-/* packet trace format function */
-u8 *
-hicn_strategy_format_trace (u8 * s, va_list * args)
-{
-  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
-  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
-  hicn_strategy_trace_t *t = va_arg (*args, hicn_strategy_trace_t *);
-
-  const hicn_strategy_vft_t *vft = hicn_dpo_get_strategy_vft (t->dpo_type);
-
-  return vft->hicn_format_strategy_trace (s, t);
-}
-
-
-always_inline int
-hicn_new_interest (hicn_strategy_runtime_t * rt, vlib_buffer_t * b0,
-		   u32 * next, f64 tnow, u8 * nameptr,
-		   u16 namelen, hicn_face_id_t outface, int nh_idx,
-		   index_t dpo_ctx_id0, const hicn_strategy_vft_t * strategy,
-		   dpo_type_t dpo_type, u8 isv6,
-		   vl_api_hicn_api_node_stats_get_reply_t * stats)
-{
-  int ret;
-  hicn_hash_node_t *nodep;
-  hicn_pcs_entry_t *pitp;
-  hicn_header_t *hicn0;
-  hicn_main_t *sm = &hicn_main;
-  hicn_buffer_t *hicnb0 = hicn_get_buffer (b0);
-  u32 node_id0 = 0;
-  u8 vft_id0 = dpo_type;
-  u8 is_cs0 = 0;
-  u8 hash_entry_id = 0;
-  u8 bucket_is_overflow = 0;
-  u32 bucket_id = ~0;
-
-
-  /* Create PIT node and init PIT entry */
-  nodep = hicn_hashtb_alloc_node (rt->pitcs->pcs_table);
-  if (PREDICT_FALSE (nodep == NULL))
-    {
-      /* Nothing we can do - no mem */
-      *next = HICN_STRATEGY_NEXT_ERROR_DROP;
-      return HICN_ERROR_HASHTB_NOMEM;
-    }
-  pitp = hicn_pit_get_data (nodep);
-  hicn_pit_init_data (pitp);
-  pitp->shared.create_time = tnow;
-
-  hicn0 = vlib_buffer_get_current (b0);
-  hicn_lifetime_t imsg_lifetime;
-  hicn_type_t type = hicnb0->type;
-  hicn_ops_vft[type.l1]->get_lifetime (type, &hicn0->protocol,
-				       &imsg_lifetime);
-
-  if (imsg_lifetime > sm->pit_lifetime_max_ms)
-    {
-      imsg_lifetime = sm->pit_lifetime_max_ms;
-    }
-  pitp->shared.expire_time = hicn_pcs_get_exp_time (tnow, imsg_lifetime);
-
-  /* Set up the hash node and insert it */
-  hicn_hash_entry_t *hash_entry;
-  hicn_hashtb_init_node (rt->pitcs->pcs_table, nodep, nameptr, namelen);
-
-  ret =
-    hicn_pcs_pit_insert (rt->pitcs, pitp, nodep, &hash_entry,
-			 hicnb0->name_hash, &node_id0, &dpo_ctx_id0, &vft_id0,
-			 &is_cs0, &hash_entry_id, &bucket_id,
-			 &bucket_is_overflow);
-
-  if (ret == HICN_ERROR_NONE)
-    {
-      strategy->hicn_add_interest (vnet_buffer (b0)->ip.adj_index[VLIB_TX],
-				   hash_entry);
-
-      /* Add face */
-      hicn_face_db_add_face (hicnb0->face_id, &(pitp->u.pit.faces));
-
-      *next = isv6 ? HICN_STRATEGY_NEXT_INTEREST_FACE6 :
-        HICN_STRATEGY_NEXT_INTEREST_FACE4;
-
-      vnet_buffer (b0)->ip.adj_index[VLIB_TX] = outface;
-      stats->pkts_interest_count++;
-      pitp->u.pit.pe_txnh = nh_idx;
-    }
-  else
-    {
-      /* Interest aggregate in PIT */
-      if (ret == HICN_ERROR_HASHTB_EXIST)
-	{
-	  hicn_store_internal_state (b0, hicnb0->name_hash, node_id0,
-				     dpo_ctx_id0, vft_id0, hash_entry_id,
-				     bucket_id, bucket_is_overflow);
-	  // We need to take a lock as the lock is not taken on the hash
-	  // entry because it is a CS entry (hash_insert function).
-	  hash_entry->locks++;
-	  *next =
-	    is_cs0 ? HICN_STRATEGY_NEXT_INTEREST_HITCS :
-	    HICN_STRATEGY_NEXT_INTEREST_HITPIT;
-	}
-      else
-	{
-	  /* Send the packet to the interest-hitpit node */
-	  *next = HICN_STRATEGY_NEXT_ERROR_DROP;
-	}
-      hicn_faces_flush (&(pitp->u.pit.faces));
-      hicn_hashtb_free_node (rt->pitcs->pcs_table, nodep);
-    }
-
-  return (ret);
-
-}
-
-/*
- * ICN strategy later node for interests: - 1 packet at a time - ipv4/tcp
- * ipv6/tcp
- */
-uword
-hicn_strategy_fn (vlib_main_t * vm,
-		  vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-
-  u32 n_left_from, *from, *to_next, n_left_to_next;
-  hicn_strategy_next_t next_index;
-  hicn_strategy_runtime_t *rt = NULL;
-  vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
-  f64 tnow;
-
-  from = vlib_frame_vector_args (frame);
-  n_left_from = frame->n_vectors;
-  next_index = (hicn_strategy_next_t) node->cached_next_index;
-  rt = vlib_node_get_runtime_data (vm, hicn_strategy_node.index);
-  rt->pitcs = &hicn_main.pitcs;
-  /* Capture time in vpp terms */
-  tnow = vlib_time_now (vm);
-
-  while (n_left_from > 0)
-    {
-
-      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  u8 isv6;
-	  u8 *nameptr;
-	  u16 namelen;
-	  hicn_name_t name;
-	  hicn_header_t *hicn0;
-	  vlib_buffer_t *b0;
-	  u32 bi0;
-	  hicn_face_id_t outface;
-	  int nh_idx;
-	  u32 next0 = next_index;
-	  int ret;
-
-	  /* Prefetch for next iteration. */
-	  if (n_left_from > 1)
-	    {
-	      vlib_buffer_t *b1;
-	      b1 = vlib_get_buffer (vm, from[1]);
-	      CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, LOAD);
-	      CLIB_PREFETCH (&b1->trace_handle, 2 * CLIB_CACHE_LINE_BYTES,
-			     STORE);
-	    }
-	  /* Dequeue a packet buffer */
-	  bi0 = from[0];
-	  from += 1;
-	  n_left_from -= 1;
-	  to_next[0] = bi0;
-	  to_next += 1;
-	  n_left_to_next -= 1;
-
-	  b0 = vlib_get_buffer (vm, bi0);
-	  next0 = HICN_STRATEGY_NEXT_ERROR_DROP;
-
-	  hicn_dpo_ctx_t *dpo_ctx =
-	    hicn_strategy_dpo_ctx_get (vnet_buffer (b0)->ip.
-				       adj_index[VLIB_TX]);
-	  const hicn_strategy_vft_t *strategy =
-	    hicn_dpo_get_strategy_vft (dpo_ctx->dpo_type);
-
-	  ret = hicn_interest_parse_pkt (b0, &name, &namelen, &hicn0, &isv6);
-	  stats.pkts_processed++;
-	  /* Select next hop */
-	  /*
-	   * Double check that the interest has been through
-	   * the interest-pcslookup node due to misconfiguration in
-	   * the punting rules.
-	   */
-	  if (PREDICT_TRUE
-	      (ret == HICN_ERROR_NONE && HICN_IS_NAMEHASH_CACHED (b0)
-	       && strategy->hicn_select_next_hop (vnet_buffer (b0)->
-						  ip.adj_index[VLIB_TX],
-						  &nh_idx,
-						  &outface) ==
-	       HICN_ERROR_NONE))
-	    {
-	      /*
-	       * No need to check if parsing was successful
-	       * here. Already checked in the interest_pcslookup
-	       * node
-	       */
-	      nameptr = (u8 *) (&name);
-	      hicn_new_interest (rt, b0, &next0, tnow, nameptr, namelen,
-				 outface, nh_idx,
-				 vnet_buffer (b0)->ip.adj_index[VLIB_TX],
-				 strategy, dpo_ctx->dpo_type, isv6, &stats);
-	    }
-	  /* Maybe trace */
-	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
-			     (b0->flags & VLIB_BUFFER_IS_TRACED)))
-	    {
-	      hicn_strategy_trace_t *t =
-		vlib_add_trace (vm, node, b0, sizeof (*t));
-	      t->pkt_type = HICN_PKT_TYPE_CONTENT;
-	      t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-	      t->next_index = next0;
-	      t->dpo_type = dpo_ctx->dpo_type;
-	    }
-	  /*
-	   * Verify speculative enqueue, maybe switch current
-	   * next frame
-	   */
-	  /*
-	   * Fix in case of a wrong speculation. Needed for
-	   * cloning the data in the right frame
-	   */
-	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
-					   to_next, n_left_to_next,
-					   bi0, next0);
-	}
-
-      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-    }
-
-  vlib_node_increment_counter (vm, hicn_strategy_node.index,
-			       HICNFWD_ERROR_PROCESSED, stats.pkts_processed);
-  vlib_node_increment_counter (vm, hicn_strategy_node.index,
-			       HICNFWD_ERROR_INTERESTS,
-			       stats.pkts_interest_count);
-
-  return (frame->n_vectors);
-}
-
-/*
- * Node registration for the forwarder node
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (hicn_strategy_node) =
-  {
-   .name = "hicn-strategy",
-   .function = hicn_strategy_fn,
-   .vector_size = sizeof (u32),
-   .runtime_data_bytes = sizeof (int) + sizeof(hicn_pit_cs_t *),
-   .format_trace = hicn_strategy_format_trace,
-   .type = VLIB_NODE_TYPE_INTERNAL,
-   .n_errors = ARRAY_LEN (hicn_strategy_error_strings),
-   .error_strings = hicn_strategy_error_strings,
-   .n_next_nodes = HICN_STRATEGY_N_NEXT,
-   .next_nodes =
-   {
-    [HICN_STRATEGY_NEXT_INTEREST_HITPIT] = "hicn-interest-hitpit",
-    [HICN_STRATEGY_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs",
-    [HICN_STRATEGY_NEXT_INTEREST_FACE4] = "hicn4-face-output",
-    [HICN_STRATEGY_NEXT_INTEREST_FACE6] = "hicn6-face-output",
-    [HICN_STRATEGY_NEXT_ERROR_DROP] = "error-drop",
-   },
-  };
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables: eval: (c-set-style "gnu") End:
- */