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, 164 insertions, 0 deletions

diff --git a/hicn-plugin/src/strategy_dpo_ctx.c b/hicn-plugin/src/strategy_dpo_ctx.c
new file mode 100644
index 000000000..342c78bb5
--- /dev/null
+++ b/hicn-plugin/src/strategy_dpo_ctx.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 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 "strategy_dpo_ctx.h"
+#include "strategy_dpo_manager.h"
+
+hicn_dpo_ctx_t *hicn_strategy_dpo_ctx_pool;
+
+void
+hicn_strategy_init_dpo_ctx_pool ()
+{
+  pool_init_fixed (hicn_strategy_dpo_ctx_pool, 256);
+
+}
+
+void
+hicn_strategy_dpo_ctx_lock (dpo_id_t * dpo)
+{
+  hicn_dpo_ctx_t *dpo_ctx = hicn_strategy_dpo_ctx_get (dpo->dpoi_index);
+
+  if (dpo_ctx != NULL)
+    {
+      dpo_ctx->locks++;
+    }
+}
+
+void
+hicn_strategy_dpo_ctx_unlock (dpo_id_t * dpo)
+{
+  hicn_dpo_ctx_t *hicn_strategy_dpo_ctx =
+    (hicn_dpo_ctx_t *) hicn_strategy_dpo_ctx_get (dpo->dpoi_index);
+
+  if (hicn_strategy_dpo_ctx != NULL)
+    {
+      hicn_strategy_dpo_ctx->locks--;
+
+      if (0 == hicn_strategy_dpo_ctx->locks)
+	{
+	  pool_put (hicn_strategy_dpo_ctx_pool, hicn_strategy_dpo_ctx);
+	}
+    }
+}
+
+u8 *
+hicn_strategy_dpo_format_ctx (u8 * s, va_list * ap)
+{
+  index_t index = va_arg (*ap, index_t);
+  hicn_dpo_ctx_t *dpo = NULL;
+  u32 indent = va_arg (*ap, u32);
+
+  dpo = (hicn_dpo_ctx_t *) hicn_strategy_dpo_ctx_get (index);
+
+  const hicn_dpo_vft_t *dpo_vft = hicn_dpo_get_vft (dpo->dpo_type);
+
+  s = dpo_vft->hicn_dpo_format (s, 2, index, indent);
+
+  return (s);
+}
+
+index_t
+hicn_strategy_dpo_ctx_get_index (hicn_dpo_ctx_t * cd)
+{
+  return (cd - hicn_strategy_dpo_ctx_pool);
+}
+
+hicn_dpo_ctx_t *
+hicn_strategy_dpo_ctx_get (index_t index)
+{
+  hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = NULL;
+  if (!pool_is_free_index (hicn_strategy_dpo_ctx_pool, index))
+    {
+      hicn_strategy_dpo_ctx =
+	(pool_elt_at_index (hicn_strategy_dpo_ctx_pool, index));
+    }
+
+  return hicn_strategy_dpo_ctx;
+}
+
+hicn_dpo_ctx_t *
+hicn_strategy_dpo_ctx_alloc ()
+{
+  hicn_dpo_ctx_t *dpo_ctx;
+  pool_get (hicn_strategy_dpo_ctx_pool, dpo_ctx);
+  return dpo_ctx;
+}
+
+int
+hicn_strategy_dpo_ctx_add_nh (hicn_face_id_t nh, hicn_dpo_ctx_t * dpo_ctx,
+			      u8 * pos)
+{
+
+  int empty = dpo_ctx->entry_count;
+
+  /* Iterate through the list of faces to find if the face is already a next hop */
+  for (int i = 0; i < dpo_ctx->entry_count; i++)
+    {
+      if (nh == dpo_ctx->next_hops[i])
+	{
+	  /* If face is marked as deleted, ignore it */
+	  hicn_face_t *face =
+	    hicn_dpoi_get_from_idx (dpo_ctx->next_hops[i]);
+	  if (face->flags & HICN_FACE_FLAGS_DELETED)
+	    {
+	      continue;
+	    }
+	  return HICN_ERROR_DPO_CTX_NHOPS_EXISTS;
+	}
+    }
+
+  /* Get an empty place */
+  if (empty > HICN_PARAM_FIB_ENTRY_NHOPS_MAX)
+    {
+      return HICN_ERROR_DPO_CTX_NHOPS_NS;
+    }
+
+  dpo_ctx->next_hops[empty] = nh;
+  hicn_face_lock_with_id (nh);
+  dpo_ctx->entry_count++;
+  *pos = empty;
+
+  return HICN_ERROR_NONE;
+}
+
+int
+hicn_strategy_dpo_ctx_del_nh (hicn_face_id_t face_id,
+			      hicn_dpo_ctx_t * dpo_ctx)
+{
+  int ret = HICN_ERROR_DPO_CTX_NOT_FOUND;
+  hicn_face_id_t invalid = NEXT_HOP_INVALID;
+
+  for (int i = 0; i < dpo_ctx->entry_count; i++)
+    {
+      if (dpo_ctx->next_hops[i] == face_id)
+	{
+	  hicn_face_unlock_with_id (dpo_ctx->next_hops[i]);
+	  dpo_ctx->entry_count--;
+	  dpo_ctx->next_hops[i] = dpo_ctx->next_hops[dpo_ctx->entry_count];
+	  dpo_ctx->next_hops[dpo_ctx->entry_count] = invalid;
+	  ret = HICN_ERROR_NONE;
+	  break;
+	}
+    }
+
+  return ret;
+
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */