[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, 308 deletions

diff --git a/hicn-plugin/src/interest_hitpit_node.c b/hicn-plugin/src/interest_hitpit_node.c
deleted file mode 100644
index 9ebf183c5..000000000
--- a/hicn-plugin/src/interest_hitpit_node.c
+++ /dev/null
@@ -1,308 +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 <vnet/ip/ip6_packet.h>
-
-#include "interest_hitpit.h"
-#include "mgmt.h"
-#include "parser.h"
-#include "data_fwd.h"
-#include "infra.h"
-#include "strategy.h"
-#include "strategy_dpo_ctx.h"
-#include "strategy_dpo_manager.h"
-#include "state.h"
-#include "error.h"
-#include "face_db.h"
-
-/* packet trace format function */
-static u8 *hicn_interest_hitpit_format_trace (u8 * s, va_list * args);
-
-/* Stats string values */
-static char *hicn_interest_hitpit_error_strings[] = {
-#define _(sym, string) string,
-  foreach_hicnfwd_error
-#undef _
-};
-
-vlib_node_registration_t hicn_interest_hitpit_node;
-
-always_inline void drop_packet (u32 * next0);
-
-/*
- * hICN forwarder node for interests hitting the PIT
- */
-static uword
-hicn_interest_hitpit_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
-			      vlib_frame_t * frame)
-{
-  u32 n_left_from, *from, *to_next;
-  hicn_interest_hitpit_next_t next_index;
-  hicn_interest_hitpit_runtime_t *rt;
-  vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
-  f64 tnow;
-
-  rt = vlib_node_get_runtime_data (vm, hicn_interest_hitpit_node.index);
-
-  if (PREDICT_FALSE (rt->pitcs == NULL))
-    {
-      rt->pitcs = &hicn_main.pitcs;
-    }
-  from = vlib_frame_vector_args (frame);
-  n_left_from = frame->n_vectors;
-  next_index = node->cached_next_index;
-
-  /* Capture time in vpp terms */
-  tnow = vlib_time_now (vm);
-
-  while (n_left_from > 0)
-    {
-      u32 n_left_to_next;
-      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  vlib_buffer_t *b0;
-	  u8 isv6;
-	  u8 *nameptr;
-	  u16 namelen;
-	  u32 bi0;
-	  u32 next0 = HICN_INTEREST_HITPIT_NEXT_ERROR_DROP;
-	  hicn_name_t name;
-	  hicn_header_t *hicn0;
-	  hicn_hash_node_t *node0;
-	  const hicn_strategy_vft_t *strategy_vft0;
-	  const hicn_dpo_vft_t *dpo_vft0;
-	  hicn_pcs_entry_t *pitp;
-	  u8 dpo_ctx_id0;
-	  u8 found = 0;
-	  int nh_idx;
-	  hicn_face_id_t outface;
-	  hicn_hash_entry_t *hash_entry0;
-	  hicn_buffer_t *hicnb0;
-	  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->data, 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);
-
-	  /* Get hicn buffer and state */
-	  hicnb0 = hicn_get_buffer (b0);
-	  hicn_get_internal_state (hicnb0, rt->pitcs, &node0, &strategy_vft0,
-				   &dpo_vft0, &dpo_ctx_id0, &hash_entry0);
-
-
-	  ret = hicn_interest_parse_pkt (b0, &name, &namelen, &hicn0, &isv6);
-	  nameptr = (u8 *) (&name);
-	  pitp = hicn_pit_get_data (node0);
-	  dpo_id_t hicn_dpo_id0 =
-	    { dpo_vft0->hicn_dpo_get_type (), 0, 0, dpo_ctx_id0 };
-
-	  /*
-	   * Check if the hit is instead a collision in the
-	   * hash table. Unlikely to happen.
-	   */
-	  if (PREDICT_FALSE
-	      (ret != HICN_ERROR_NONE
-	       || !hicn_node_compare (nameptr, namelen, node0)))
-	    {
-	      stats.interests_hash_collision++;
-	      /* Remove lock from the entry */
-	      hicn_pcs_remove_lock (rt->pitcs, &pitp, &node0, vm, hash_entry0,
-				    dpo_vft0, &hicn_dpo_id0);
-	      drop_packet (&next0);
-
-	      goto end_processing;
-	    }
-	  /*
-	   * If the entry is expired, remove it no matter of
-	   * the possible cases.
-	   */
-	  if (tnow > pitp->shared.expire_time)
-	    {
-	      strategy_vft0->hicn_on_interest_timeout (dpo_ctx_id0);
-	      hicn_pcs_delete (rt->pitcs, &pitp, &node0, vm, hash_entry0,
-			       dpo_vft0, &hicn_dpo_id0);
-	      stats.pit_expired_count++;
-	      next0 = HICN_INTEREST_HITPIT_NEXT_STRATEGY;
-	    }
-	  else
-	    {
-	      if ((hash_entry0->he_flags & HICN_HASH_ENTRY_FLAG_CS_ENTRY))
-		{
-		  next0 = HICN_INTEREST_HITPIT_NEXT_INTEREST_HITCS;
-		}
-	      else
-		{
-		  /*
-		   * Distinguish between aggregation or
-		   * retransmission
-		   */
-
-		  found =
-		    hicn_face_search (hicnb0->face_id,
-				      &(pitp->u.pit.faces));
-
-		  if (found)
-		    {
-		      strategy_vft0->hicn_select_next_hop (dpo_ctx_id0,
-							   &nh_idx, &outface);
-		      /* Retransmission */
-		      /*
-		       * Prepare the packet for the
-		       * forwarding
-		       */
-		      next0 = isv6 ? HICN_INTEREST_HITPIT_NEXT_FACE6_OUTPUT :
-                        HICN_INTEREST_HITPIT_NEXT_FACE4_OUTPUT;
-		      vnet_buffer (b0)->ip.adj_index[VLIB_TX] =
-			outface;
-
-		      /*
-		       * Update the egress face in
-		       * the PIT
-		       */
-		      pitp->u.pit.pe_txnh = nh_idx;
-		      stats.interests_retx++;
-		    }
-		  else
-		    {
-		      hicn_face_db_add_face (hicnb0->face_id,
-                                             &pitp->u.pit.faces);
-
-		      /* Aggregation */
-		      drop_packet (&next0);
-		      stats.interests_aggregated++;
-		    }
-		  /* Remove lock from the entry */
-		  hicn_pcs_remove_lock (rt->pitcs, &pitp, &node0, vm,
-					hash_entry0, dpo_vft0, &hicn_dpo_id0);
-
-		}
-	    }
-	end_processing:
-
-	  /* Maybe trace */
-	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
-			     (b0->flags & VLIB_BUFFER_IS_TRACED)))
-	    {
-	      hicn_interest_hitpit_trace_t *t =
-		vlib_add_trace (vm, node, b0, sizeof (*t));
-	      t->pkt_type = HICN_PKT_TYPE_INTEREST;
-	      t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-	      t->next_index = next0;
-	    }
-	  /* Incr packet counter */
-	  stats.pkts_processed += 1;
-
-	  /*
-	   * Verify speculative enqueue, maybe switch current
-	   * next 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);
-    }
-  u32 pit_int_count = hicn_pit_get_int_count (rt->pitcs);
-
-
-  vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index,
-			       HICNFWD_ERROR_PROCESSED, stats.pkts_processed);
-  vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index,
-			       HICNFWD_ERROR_INTEREST_AGG,
-			       stats.interests_aggregated);
-  vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index,
-			       HICNFWD_ERROR_INT_RETRANS,
-			       stats.interests_retx);
-  vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index,
-			       HICNFWD_ERROR_PIT_EXPIRED,
-			       stats.pit_expired_count);
-  vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index,
-			       HICNFWD_ERROR_HASH_COLL_HASHTB_COUNT,
-			       stats.interests_hash_collision);
-
-  update_node_counter (vm, hicn_interest_hitpit_node.index,
-		       HICNFWD_ERROR_INT_COUNT, pit_int_count);
-
-  return (frame->n_vectors);
-}
-
-/* packet trace format function */
-static u8 *
-hicn_interest_hitpit_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_interest_hitpit_trace_t *t =
-    va_arg (*args, hicn_interest_hitpit_trace_t *);
-
-  s = format (s, "INTEREST-HITPIT: pkt: %d, sw_if_index %d, next index %d",
-	      (int) t->pkt_type, t->sw_if_index, t->next_index);
-  return (s);
-}
-
-void
-drop_packet (u32 * next0)
-{
-  *next0 = HICN_INTEREST_HITPIT_NEXT_ERROR_DROP;
-}
-
-/*
- * Node registration for the interest forwarder node
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE(hicn_interest_hitpit_node) =
-{
-  .function = hicn_interest_hitpit_node_fn,
-  .name = "hicn-interest-hitpit",
-  .vector_size = sizeof(u32),
-  .runtime_data_bytes = sizeof(hicn_interest_hitpit_runtime_t),
-  .format_trace = hicn_interest_hitpit_format_trace,
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = ARRAY_LEN(hicn_interest_hitpit_error_strings),
-  .error_strings = hicn_interest_hitpit_error_strings,
-  .n_next_nodes = HICN_INTEREST_HITPIT_N_NEXT,
-  /* edit / add dispositions here */
-  .next_nodes =
-  {
-    [HICN_INTEREST_HITPIT_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs",
-    [HICN_INTEREST_HITPIT_NEXT_STRATEGY] = "hicn-strategy",
-    [HICN_INTEREST_HITPIT_NEXT_FACE4_OUTPUT] = "hicn4-face-output",
-    [HICN_INTEREST_HITPIT_NEXT_FACE6_OUTPUT] = "hicn6-face-output",
-    [HICN_INTEREST_HITPIT_NEXT_ERROR_DROP] = "error-drop",
-  },
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables: eval: (c-set-style "gnu") End:
- */