This is the first commit of the hicn projectv19.01

Change-Id: I6f2544ad9b9f8891c88cc4bcce3cf19bd3cc863f
Signed-off-by: Luca Muscariello <lumuscar+fdio@cisco.com>

1 files changed, 243 insertions, 0 deletions

diff --git a/hicn-plugin/src/faces/app/address_mgr.c b/hicn-plugin/src/faces/app/address_mgr.c
new file mode 100755
index 000000000..76a7e0f6d
--- /dev/null
+++ b/hicn-plugin/src/faces/app/address_mgr.c
@@ -0,0 +1,243 @@
+/*
+ * Copyright (c) 2017-2019 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.
+ */
+
+/*
+ * Copyright (c) 2017-2019 by cisco systems inc. All rights reserved.
+ *
+ */
+
+#include <dlfcn.h>
+
+#include <vlib/vlib.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/ip/ip4.h>	//ip4_add_del_ip_address
+#include <vnet/ip/ip6.h>	//ip6_add_del_ip_address
+#include <vnet/fib/fib_types.h>	//FIB_PROTOCOL_IP4/6, FIB_NODE_INDEX_INVALID
+#include <vnet/fib/fib_entry.h>	//FIB_SOURCE_PLUGIN_HI
+#include <vnet/fib/fib_table.h>
+#include <vppinfra/format.h>
+#include <vnet/interface.h>	//appif_flags
+#include <vnet/interface_funcs.h>	//vnet_sw_interface_set_flags
+
+#include "address_mgr.h"
+#include "../../hicn.h"
+#include "../../infra.h"
+#include "../../error.h"
+#include "../face.h"
+#include "../ip/face_ip.h"
+#include "../../strategy_dpo_ctx.h"
+#include "../../route.h"
+
+typedef struct address_mgr_main_s
+{
+  ip4_address_t next_ip4_local_addr;
+  ip6_address_t next_ip6_local_addr;
+} address_mgr_main_t;
+
+address_mgr_main_t address_mgr_main;
+
+static void
+increment_v4_address (ip4_address_t * a, u32 val)
+{
+  u32 v;
+
+  v = clib_net_to_host_u32 (a->as_u32) + val;
+  a->as_u32 = clib_host_to_net_u32 (v);
+}
+
+static void
+increment_v6_address (ip6_address_t * a, u64 val)
+{
+  u64 v;
+
+  v = clib_net_to_host_u64 (a->as_u64[1]) + val;
+  a->as_u64[1] = clib_host_to_net_u64 (v);
+}
+
+void
+get_two_ip4_addresses (ip4_address_t * appif_addr, ip4_address_t * nh_addr)
+{
+  /* We want two consecutives address that fall into a /31 mask */
+  if (address_mgr_main.next_ip4_local_addr.as_u8[3] & 0x01)
+    increment_v4_address (&(address_mgr_main.next_ip4_local_addr), 1);
+
+  *appif_addr = address_mgr_main.next_ip4_local_addr;
+  increment_v4_address (&(address_mgr_main.next_ip4_local_addr), 1);
+  *nh_addr = address_mgr_main.next_ip4_local_addr;
+  fib_prefix_t fib_pfx;
+  fib_node_index_t fib_entry_index = FIB_NODE_INDEX_INVALID;
+  u32 fib_index;
+
+  fib_pfx.fp_proto = FIB_PROTOCOL_IP4;
+  fib_pfx.fp_len = ADDR_MGR_IP4_LEN;
+  /* At this point the face exists in the face table */
+  do
+    {
+      /* Check if the route already exist in the fib */
+      fib_pfx.fp_addr = to_ip46 ( /* is_v6 */ 0, appif_addr->as_u8);
+      fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
+						     HICN_FIB_TABLE,
+						     FIB_SOURCE_PLUGIN_HI);
+      fib_entry_index = fib_table_lookup_exact_match (fib_index, &fib_pfx);
+      fib_table_unlock (fib_index, fib_pfx.fp_proto, FIB_SOURCE_PLUGIN_HI);
+      if (fib_entry_index != FIB_NODE_INDEX_INVALID)
+	{
+	  fib_pfx.fp_addr = to_ip46 ( /* is_v6 */ 0, nh_addr->as_u8);
+	  fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
+							 HICN_FIB_TABLE,
+							 FIB_SOURCE_PLUGIN_HI);
+	  fib_entry_index =
+	    fib_table_lookup_exact_match (fib_index, &fib_pfx);
+	  fib_table_unlock (fib_index, fib_pfx.fp_proto,
+			    FIB_SOURCE_PLUGIN_HI);
+	}
+      if (fib_entry_index != FIB_NODE_INDEX_INVALID)
+	{
+	  increment_v4_address (appif_addr, 2);
+	  increment_v4_address (nh_addr, 2);
+	}
+    }
+  while (fib_entry_index != FIB_NODE_INDEX_INVALID);
+
+  address_mgr_main.next_ip4_local_addr = *nh_addr;
+  increment_v4_address (&(address_mgr_main.next_ip4_local_addr), 1);
+}
+
+void
+get_two_ip6_addresses (ip6_address_t * appif_addr, ip6_address_t * nh_addr)
+{
+
+  /* We want two consecutives address that fall into a /127 mask */
+  if (address_mgr_main.next_ip6_local_addr.as_u8[15] & 0x01)
+    increment_v6_address (&(address_mgr_main.next_ip6_local_addr), 1);
+
+  *appif_addr = address_mgr_main.next_ip6_local_addr;
+  increment_v6_address (&(address_mgr_main.next_ip6_local_addr), 1);
+  *nh_addr = address_mgr_main.next_ip6_local_addr;
+
+
+  fib_prefix_t fib_pfx;
+  fib_node_index_t fib_entry_index = FIB_NODE_INDEX_INVALID;
+  u32 fib_index;
+
+  fib_pfx.fp_proto = FIB_PROTOCOL_IP6;
+  fib_pfx.fp_len = ADDR_MGR_IP6_LEN;
+  /* At this point the face exists in the face table */
+  do
+    {
+      /* Check if the route already exist in the fib */
+      fib_pfx.fp_addr = to_ip46 ( /* is_v6 */ 1, appif_addr->as_u8);
+      fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
+						     HICN_FIB_TABLE,
+						     FIB_SOURCE_PLUGIN_HI);
+      fib_entry_index = fib_table_lookup_exact_match (fib_index, &fib_pfx);
+      fib_table_unlock (fib_index, fib_pfx.fp_proto, FIB_SOURCE_PLUGIN_HI);
+      if (fib_entry_index != FIB_NODE_INDEX_INVALID)
+	{
+	  fib_pfx.fp_addr = to_ip46 ( /* is_v6 */ 0, nh_addr->as_u8);
+	  fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
+							 HICN_FIB_TABLE,
+							 FIB_SOURCE_PLUGIN_HI);
+	  fib_entry_index =
+	    fib_table_lookup_exact_match (fib_index, &fib_pfx);
+	  fib_table_unlock (fib_index, fib_pfx.fp_proto,
+			    FIB_SOURCE_PLUGIN_HI);
+	}
+      if (fib_entry_index != FIB_NODE_INDEX_INVALID)
+	{
+	  increment_v6_address (appif_addr, 2);
+	  increment_v6_address (nh_addr, 2);
+	}
+    }
+  while (fib_entry_index != FIB_NODE_INDEX_INVALID);
+
+  address_mgr_main.next_ip6_local_addr = *nh_addr;
+  increment_v6_address (&(address_mgr_main.next_ip6_local_addr), 1);
+}
+
+ip4_address_t
+get_ip4_address ()
+{
+  ip4_address_t *prefix = &address_mgr_main.next_ip4_local_addr;
+  fib_prefix_t fib_pfx;
+  fib_node_index_t fib_entry_index = FIB_NODE_INDEX_INVALID;
+  u32 fib_index;
+
+  fib_pfx.fp_proto = FIB_PROTOCOL_IP4;
+  fib_pfx.fp_len = ADDR_MGR_IP4_LEN;
+  /* At this point the face exists in the face table */
+  do
+    {
+      /* Check if the route already exist in the fib */
+      fib_pfx.fp_addr = to_ip46 ( /* is_v6 */ 0, prefix->as_u8);
+      fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
+						     HICN_FIB_TABLE,
+						     FIB_SOURCE_PLUGIN_HI);
+      fib_entry_index = fib_table_lookup_exact_match (fib_index, &fib_pfx);
+      fib_table_unlock (fib_index, fib_pfx.fp_proto, FIB_SOURCE_PLUGIN_HI);
+      increment_v4_address (prefix, 1);
+    }
+  while (fib_entry_index != FIB_NODE_INDEX_INVALID);
+
+  return fib_pfx.fp_addr.ip4;
+}
+
+ip6_address_t
+get_ip6_address ()
+{
+  ip6_address_t *prefix = &address_mgr_main.next_ip6_local_addr;
+  fib_prefix_t fib_pfx;
+  fib_node_index_t fib_entry_index = FIB_NODE_INDEX_INVALID;
+  u32 fib_index;
+
+  fib_pfx.fp_proto = FIB_PROTOCOL_IP6;
+  fib_pfx.fp_len = ADDR_MGR_IP6_LEN;
+  /* At this point the face exists in the face table */
+  do
+    {
+      /* Check if the route already exist in the fib */
+      fib_pfx.fp_addr = to_ip46 ( /* is_v6 */ 1, prefix->as_u8);
+      fib_index = fib_table_find_or_create_and_lock (fib_pfx.fp_proto,
+						     HICN_FIB_TABLE,
+						     FIB_SOURCE_PLUGIN_HI);
+      fib_entry_index = fib_table_lookup_exact_match (fib_index, &fib_pfx);
+      fib_table_unlock (fib_index, fib_pfx.fp_proto, FIB_SOURCE_PLUGIN_HI);
+      increment_v6_address (prefix, 1);
+    }
+  while (fib_entry_index != FIB_NODE_INDEX_INVALID);
+
+  return fib_pfx.fp_addr.ip6;
+}
+
+void
+address_mgr_init ()
+{
+
+  address_mgr_main.next_ip4_local_addr.as_u8[0] = 169;
+  address_mgr_main.next_ip4_local_addr.as_u8[1] = 254;
+  address_mgr_main.next_ip4_local_addr.as_u8[2] = 1;
+  address_mgr_main.next_ip4_local_addr.as_u8[3] = 1;
+
+  ip6_address_set_zero (&address_mgr_main.next_ip6_local_addr);
+  address_mgr_main.next_ip6_local_addr.as_u16[0] =
+    clib_host_to_net_u16 (0xfc00);
+  address_mgr_main.next_ip6_local_addr.as_u8[15] = 1;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */