misc: Move l2tp to plugin

Type: refactor

Change-Id: Ifb36eeb146b87e9e305881429d32d6879e955e1e
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 148 insertions, 0 deletions

diff --git a/src/plugins/l2tp/l2tp.h b/src/plugins/l2tp/l2tp.h
new file mode 100644
index 00000000000..949d5d369bd
--- /dev/null
+++ b/src/plugins/l2tp/l2tp.h
@@ -0,0 +1,148 @@
+/*
+ * l2tp.h : L2TPv3 tunnel support
+ *
+ * Copyright (c) 2013 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 __included_l2tp_h__
+#define __included_l2tp_h__
+
+#include <vlib/vlib.h>
+#include <vnet/ip/ip.h>
+#include <l2tp/packet.h>
+
+typedef struct
+{
+  /* ip6 addresses */
+  ip6_address_t our_address;
+  ip6_address_t client_address;
+
+  /* l2tpv3 header parameters */
+  u64 local_cookie[2];
+  u64 remote_cookie;
+  u32 local_session_id;
+  u32 remote_session_id;
+
+  /* tunnel interface */
+  u32 hw_if_index;
+  u32 sw_if_index;
+
+  /* fib index used for outgoing encapsulated packets */
+  u32 encap_fib_index;
+
+  u8 l2tp_hdr_size;
+  u8 l2_sublayer_present;
+  u8 cookie_flags;		/* in host byte order */
+
+  u8 admin_up;
+} l2t_session_t;
+
+typedef enum
+{
+  L2T_LOOKUP_SRC_ADDRESS = 0,
+  L2T_LOOKUP_DST_ADDRESS,
+  L2T_LOOKUP_SESSION_ID,
+} ip6_to_l2_lookup_t;
+
+typedef struct
+{
+  /* session pool */
+  l2t_session_t *sessions;
+
+  /* ip6 -> l2 hash tables. Make up your minds, people... */
+  uword *session_by_src_address;
+  uword *session_by_dst_address;
+  uword *session_by_session_id;
+
+  ip6_to_l2_lookup_t lookup_type;
+
+  /* Counters */
+  vlib_combined_counter_main_t counter_main;
+
+  /* vector of free l2tpv3 tunnel interfaces */
+  u32 *free_l2tpv3_tunnel_hw_if_indices;
+
+  /* show device instance by real device instance */
+  u32 *dev_inst_by_real;
+
+  /* convenience */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+
+  bool proto_registered;
+
+} l2t_main_t;
+
+/* Packet trace structure */
+typedef struct
+{
+  int is_user_to_network;
+  u32 session_index;
+  ip6_address_t our_address;
+  ip6_address_t client_address;
+} l2t_trace_t;
+
+extern l2t_main_t l2t_main;
+extern vlib_node_registration_t l2t_encap_node;
+extern vlib_node_registration_t l2t_decap_node;
+extern vlib_node_registration_t l2t_decap_local_node;
+
+enum
+{
+  SESSION_COUNTER_USER_TO_NETWORK = 0,
+  SESSION_COUNTER_NETWORK_TO_USER,
+};
+
+static inline u32
+session_index_to_counter_index (u32 session_index, u32 counter_id)
+{
+  return ((session_index << 1) + counter_id);
+}
+
+u8 *format_l2t_trace (u8 * s, va_list * args);
+
+typedef struct
+{
+  /* Any per-interface config would go here */
+} ip6_l2tpv3_config_t;
+
+uword unformat_pg_l2tp_header (unformat_input_t * input, va_list * args);
+
+void l2tp_encap_init (vlib_main_t * vm);
+int create_l2tpv3_ipv6_tunnel (l2t_main_t * lm,
+			       ip6_address_t * client_address,
+			       ip6_address_t * our_address,
+			       u32 local_session_id,
+			       u32 remote_session_id,
+			       u64 local_cookie,
+			       u64 remote_cookie,
+			       int l2_sublayer_present,
+			       u32 encap_fib_index, u32 * sw_if_index);
+
+int l2tpv3_set_tunnel_cookies (l2t_main_t * lm,
+			       u32 sw_if_index,
+			       u64 new_local_cookie, u64 new_remote_cookie);
+
+int l2tpv3_interface_enable_disable (vnet_main_t * vnm,
+				     u32 sw_if_index, int enable_disable);
+
+#endif /* __included_l2tp_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */