From 6810a77da36c6750938800314c15e840ee2a8c93 Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Fri, 18 Sep 2020 14:05:45 +0000 Subject: misc: Move l2tp to plugin Type: refactor Change-Id: Ifb36eeb146b87e9e305881429d32d6879e955e1e Signed-off-by: Neale Ranns --- src/plugins/l2tp/l2tp.h | 148 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 148 insertions(+) create mode 100644 src/plugins/l2tp/l2tp.h (limited to 'src/plugins/l2tp/l2tp.h') 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 +#include +#include + +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: + */ -- cgit 1.2.3-korg