[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, 337 deletions

diff --git a/hicn-plugin/src/mapme_ctrl_node.c b/hicn-plugin/src/mapme_ctrl_node.c
deleted file mode 100644
index a0be2be1d..000000000
--- a/hicn-plugin/src/mapme_ctrl_node.c
+++ /dev/null
@@ -1,337 +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.
- */
-
-/*
- * This node processses MAP-Me control messages.
- */
-#include <vnet/ip/ip6_packet.h>
-#include <vnet/dpo/load_balance.h>
-
-#include "hicn.h"
-#include "mapme.h"
-#include "mapme_ctrl.h"
-#include "mapme_eventmgr.h"
-#include "mgmt.h"
-#include "parser.h"
-#include "infra.h"
-#include "strategy_dpo_manager.h"
-#include "strategy_dpo_ctx.h"
-#include "error.h"
-#include "state.h"
-
-extern hicn_mapme_main_t mapme_main;
-
-#define MS2NS(x) x * 1000000
-
-/* Functions declarations */
-
-/* packet trace format function */
-static u8 *hicn_mapme_ctrl_format_trace (u8 * s, va_list * args);
-
-
-/* Stats string values */
-static char *hicn_mapme_ctrl_error_strings[] = {
-#define _(sym, string) string,
-  foreach_hicnfwd_error
-#undef _
-};
-
-/*
- * @brief Process incoming control messages (Interest Update)
- * @param vm vlib main data structure
- * @param b Control packet (IU)
- * @param face_id Ingress face id
- *
- * NOTE:
- *  - this function answers locally to the IU interest by replying with a Ack
- *  (Data) packet, unless in case of outdated information, in which we can
- *  consider the interest is dropped, and another IU (aka ICMP error) is sent so
- *  that retransmissions stop.
- */
-static_always_inline bool
-hicn_mapme_process_ctrl (vlib_main_t * vm, vlib_buffer_t * b,
-			 hicn_face_id_t in_face_id)
-{
-  seq_t fib_seq;
-  const dpo_id_t *dpo;
-  hicn_prefix_t prefix;
-  mapme_params_t params;
-  int rc;
-
-  /* Parse incoming message */
-  rc =
-    hicn_mapme_parse_packet (vlib_buffer_get_current (b), &prefix, &params);
-  if (rc < 0)
-    goto ERR_PARSE;
-
-  vlib_cli_output (vm, "IU - type:%d seq:%d len:%d", params.type, params.seq,
-		   prefix.len);
-
-  /* if (params.seq == INVALID_SEQ) */
-  /*   { */
-  /*     vlib_log_warn (mapme_main.log_class, */
-  /*                 "Invalid sequence number found in IU"); */
-
-  /*     return true; */
-  /*   } */
-
-  /* We forge the ACK which we be the packet forwarded by the node */
-  hicn_mapme_create_ack (vlib_buffer_get_current (b), &params);
-
-  dpo = fib_epm_lookup (&prefix.name, prefix.len);
-  if (!dpo)
-    {
-#ifdef HICN_MAPME_ALLOW_NONEXISTING_FIB_ENTRY
-      /*
-       * This might happen for a node hosting a producer which has moved.
-       * Destroying the face has led to removing all corresponding FIB
-       * entries. In that case, we need to correctly restore the FIB entries.
-       */
-      DEBUG ("Re-creating FIB entry with next hop on connection")
-#error "not implemented"
-#else
-      //ERROR("Received IU for non-existing FIB entry");
-      return false;
-#endif /* HICN_MAPME_ALLOW_NONEXISTING_FIB_ENTRY */
-
-    }
-
-#ifdef HICN_MAPME_ALLOW_LOCATORS
-  if (!dpo_is_hicn ((dpo)))
-    {
-      /* We have an IP DPO */
-      WARN ("Not implemented yet.");
-      return false;
-    }
-#endif
-
-  /* Process the hICN DPO */
-  hicn_mapme_tfib_t *tfib =
-    TFIB (hicn_strategy_dpo_ctx_get (dpo->dpoi_index));
-
-  if (tfib == NULL)
-    {
-      WARN ("Unable to get strategy ctx.");
-      return false;
-    }
-
-  fib_seq = tfib->seq;
-
-  if (params.seq > fib_seq)
-    {
-      DEBUG
-	("Higher sequence number than FIB %d > %d, updating seq and next hops",
-	 params.seq, fib_seq);
-
-      /* This has to be done first to allow processing ack */
-      tfib->seq = params.seq;
-
-      // in_face and next_hops are face_id_t
-
-      /* Remove ingress face from TFIB in case it was present */
-      hicn_mapme_tfib_del (tfib, in_face_id);
-
-      /* Move next hops to TFIB... but in_face... */
-      for (u8 pos = 0; pos < tfib->entry_count; pos++)
-	{
-          hicn_face_t * face = hicn_dpoi_get_from_idx(tfib->next_hops[pos]);
-          hicn_face_t * in_face = hicn_dpoi_get_from_idx(in_face_id);
-          if (dpo_is_adj(&face->dpo))
-            {
-              ip_adjacency_t * adj = adj_get (dpo->dpoi_index);
-              if (ip46_address_cmp(&(adj->sub_type.nbr.next_hop), &(in_face->nat_addr))== 0)
-                  break;
-            }
-	  DEBUG
-	    ("Adding nexthop to the tfib, dpo index in_face %d, dpo index tfib %d",
-	     in_face_id, tfib->next_hops[pos]);
-	  hicn_mapme_tfib_add (tfib, tfib->next_hops[pos]);
-	}
-
-      hicn_mapme_nh_set (tfib, in_face_id);
-
-      /* We transmit both the prefix and the full dpo (type will be needed to pick the right transmit node */
-      retx_t *retx = vlib_process_signal_event_data (vm,
-						     hicn_mapme_eventmgr_process_node.
-						     index,
-						     HICN_MAPME_EVENT_FACE_NH_SET,
-						     1,
-						     sizeof (retx_t));
-      *retx = (retx_t)
-        {
-         .prefix = prefix,
-         .dpo = *dpo
-        };
-
-    }
-  else if (params.seq == fib_seq)
-    {
-      DEBUG ("Same sequence number than FIB %d > %d, adding next hop",
-	     params.seq, fib_seq);
-
-      /* Remove ingress face from TFIB in case it was present */
-      hicn_mapme_tfib_del (tfib, in_face_id);
-
-      /* Add ingress face to next hops */
-      hicn_mapme_nh_add (tfib, in_face_id);
-
-      /* Multipath, multihoming, multiple producers or duplicate interest */
-      retx_t *retx = vlib_process_signal_event_data (vm,
-						     hicn_mapme_eventmgr_process_node.
-						     index,
-						     HICN_MAPME_EVENT_FACE_NH_ADD,
-						     1,
-						     sizeof (retx_t));
-      *retx = (retx_t)
-        {
-         .prefix = prefix,
-         .dpo = *dpo
-        };
-    }
-  else				// params.seq < fib_seq
-    {
-      /*
-       * face is propagating outdated information, we can just consider it as a
-       * prevHops
-       */
-      hicn_mapme_tfib_add (tfib, in_face_id);
-
-      retx_t *retx = vlib_process_signal_event_data (vm,
-						     hicn_mapme_eventmgr_process_node.
-						     index,
-						     HICN_MAPME_EVENT_FACE_PH_ADD,
-						     1,
-						     sizeof (retx_t));
-      *retx = (retx_t)
-        {
-         .prefix = prefix,
-         .dpo = *dpo
-        };
-    }
-
-  /* We just raise events, the event_mgr is in charge of forging packet. */
-
-  return true;
-
-//ERR_ACK_CREATE:
-ERR_PARSE:
-  return false;
-}
-
-vlib_node_registration_t hicn_mapme_ctrl_node;
-
-static uword
-hicn_mapme_ctrl_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
-			 vlib_frame_t * frame)
-{
-  hicn_buffer_t *hb;
-  hicn_mapme_ctrl_next_t next_index;
-  u32 n_left_from, *from, *to_next;
-  n_left_from = frame->n_vectors;
-  //hicn_face_id_t in_face;
-
-  from = vlib_frame_vector_args (frame);
-  n_left_from = frame->n_vectors;
-  next_index = node->cached_next_index;
-
-  while (n_left_from > 0)	// buffers in the current frame
-    {
-      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)
-	{
-	  u32 bi0;
-	  vlib_buffer_t *b0;
-
-	  /* speculatively enqueue b0 to the current next frame */
-	  bi0 = from[0];
-	  to_next[0] = bi0;
-	  from += 1;
-	  to_next += 1;
-	  n_left_from -= 1;
-	  n_left_to_next -= 1;
-	  b0 = vlib_get_buffer (vm, bi0);
-	  hb = hicn_get_buffer (b0);
-
-	  /* This determines the next node on which the ack will be sent back */
-	  u32 next0 = hicn_mapme_ctrl_get_iface_node (hb->face_id);
-
-	  hicn_mapme_process_ctrl (vm, b0, hb->face_id);
-
-	  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = hb->face_id;
-
-	  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_mapme_ctrl_node.index,
-  //                               HICN_MAPME_CTRL_ERROR_SWAPPED, pkts_swapped);
-  return frame->n_vectors;
-}
-
-/* packet trace format function */
-static u8 *
-hicn_mapme_ctrl_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_mapme_ctrl_trace_t *t = va_arg (*args, hicn_mapme_ctrl_trace_t *);
-
-  s = format (s, "MAPME_CTRL: pkt: %d, sw_if_index %d, next index %d",
-	      (int) t->pkt_type, t->sw_if_index, t->next_index);
-  return (s);
-}
-
-
-/*
- * Node registration for the MAP-Me node processing special interests
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (hicn_mapme_ctrl_node) =
-{
-  .function = hicn_mapme_ctrl_node_fn,
-  .name = "hicn-mapme-ctrl",
-  .vector_size =  sizeof (u32),
-  .runtime_data_bytes = sizeof (hicn_mapme_ctrl_runtime_t),
-  .format_trace = hicn_mapme_ctrl_format_trace,
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = ARRAY_LEN (hicn_mapme_ctrl_error_strings),
-  .error_strings = hicn_mapme_ctrl_error_strings,
-  .n_next_nodes = HICN_MAPME_CTRL_N_NEXT,
-  .next_nodes =
-  {
-    /*
-     * Control packets are not forwarded by this node, but sent by the Event
-     * Manager. This node is only responsible for sending ACK back,
-     * Acks are like data packets are output on iface's
-     */
-    [HICN_MAPME_CTRL_NEXT_IP4_OUTPUT]   = "hicn4-iface-output",
-    [HICN_MAPME_CTRL_NEXT_IP6_OUTPUT]   = "hicn6-iface-output",
-    [HICN_MAPME_CTRL_NEXT_ERROR_DROP]   = "error-drop",
-  },
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */