Revert to [HICN-638] Check if systemd is running before enabling hicn-light service

Signed-off-by: Mauro Sardara <msardara@cisco.com>
Change-Id: I1810d96e001a4e6e097e1efa331b682af750925d

1 files changed, 99 insertions, 0 deletions

diff --git a/hicn-plugin/src/strategy.h b/hicn-plugin/src/strategy.h
new file mode 100644
index 000000000..d949f38a4
--- /dev/null
+++ b/hicn-plugin/src/strategy.h
@@ -0,0 +1,99 @@
+/*
+ * 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.
+ */
+
+#ifndef __HICN_STRATEGY__
+#define __HICN_STRATEGY__
+
+#include "hicn.h"
+#include "hashtb.h"
+#include "mgmt.h"
+#include "faces/face.h"
+
+/**
+ * @file strategy.h
+ *
+ * A strategy is defined as a dpo and a set of function (vft) that will be called
+ * during the packet processing. A strategy is associated to an entry in the fib by
+ * assigning the corresponding dpo to the fib entry. The dpo points to a hICN dpo
+ * context (ctx) which contains the information needed by the strategy to compute
+ * the next hop. Each strategy hash its own dpo type, which means that the dpo_type
+ * uniquely identifies a strategy and its vft. The strategy node will use the dpo_type
+ * to retrieve the corresponding vft.
+ * Here we provide:
+ * - a template for the callbacks to implement in order to create a new strategy
+ *   (hicn_fwd_strategy_t)
+ * - a default implementation for the strategy node which will call the strategy
+ *   functions while processing the interest packets
+ */
+
+/* Trace context struct */
+typedef struct
+{
+  u32 next_index;
+  u32 sw_if_index;
+  u8 pkt_type;
+  dpo_type_t dpo_type;
+} hicn_strategy_trace_t;
+
+typedef struct hicn_strategy_vft_s
+{
+  void (*hicn_receive_data) (index_t dpo_idx, int nh_idx);
+  void (*hicn_on_interest_timeout) (index_t dpo_idx);
+  void (*hicn_add_interest) (index_t dpo_idx, hicn_hash_entry_t * pit_entry);
+    u32 (*hicn_select_next_hop) (index_t dpo_idx, int *nh_idx,
+				 hicn_face_id_t* outface);
+  u8 *(*hicn_format_strategy_trace) (u8 *, hicn_strategy_trace_t *);
+  u8 *(*hicn_format_strategy) (u8 * s, va_list * ap);
+  /**< Format an hICN dpo*/
+} hicn_strategy_vft_t;
+
+typedef enum
+{
+  HICN_STRATEGY_NEXT_INTEREST_HITPIT,
+  HICN_STRATEGY_NEXT_INTEREST_HITCS,
+  HICN_STRATEGY_NEXT_INTEREST_FACE4,
+  HICN_STRATEGY_NEXT_INTEREST_FACE6,
+  HICN_STRATEGY_NEXT_ERROR_DROP,
+  HICN_STRATEGY_N_NEXT,
+} hicn_strategy_next_t;
+
+const static char *const hicn_ip6_nodes[] =
+{
+ "hicn6-iface-input",	// this is the name you give your node in VLIB_REGISTER_NODE
+ NULL,
+};
+
+const static char *const hicn_ip4_nodes[] =
+{
+ "hicn4-iface-input",	// this is the name you give your node in VLIB_REGISTER_NODE
+ NULL,
+};
+
+const static char *const *const hicn_nodes_strategy[DPO_PROTO_NUM] =
+{
+ [DPO_PROTO_IP6] = hicn_ip6_nodes,
+ [DPO_PROTO_IP4] = hicn_ip4_nodes,
+};
+
+
+extern vlib_node_registration_t hicn_strategy_node;
+
+#endif /* //__HICN_STRATEGY__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */