ee275a7333
Change-Id: Ib456558974820d8d45114b2bbad014a3a3aa2d21 Signed-off-by: Calvin <calvin.ference@gmail.com> Signed-off-by: Dave Barach <dave@barachs.net>
148 lines
3.5 KiB
C
148 lines
3.5 KiB
C
/*
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* l2tp.h : L2TPv3 tunnel support
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*
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* Copyright (c) 2013 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __included_l2tp_h__
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#define __included_l2tp_h__
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#include <vlib/vlib.h>
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#include <vnet/ip/ip.h>
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#include <vnet/l2tp/packet.h>
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typedef struct
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{
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/* ip6 addresses */
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ip6_address_t our_address;
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ip6_address_t client_address;
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/* l2tpv3 header parameters */
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u64 local_cookie[2];
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u64 remote_cookie;
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u32 local_session_id;
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u32 remote_session_id;
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/* tunnel interface */
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u32 hw_if_index;
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u32 sw_if_index;
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/* fib index used for outgoing encapsulated packets */
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u32 encap_fib_index;
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u8 l2tp_hdr_size;
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u8 l2_sublayer_present;
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u8 cookie_flags; /* in host byte order */
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u8 admin_up;
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} l2t_session_t;
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typedef enum
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{
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L2T_LOOKUP_SRC_ADDRESS = 0,
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L2T_LOOKUP_DST_ADDRESS,
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L2T_LOOKUP_SESSION_ID,
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} ip6_to_l2_lookup_t;
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typedef struct
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{
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/* session pool */
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l2t_session_t *sessions;
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/* ip6 -> l2 hash tables. Make up your minds, people... */
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uword *session_by_src_address;
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uword *session_by_dst_address;
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uword *session_by_session_id;
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ip6_to_l2_lookup_t lookup_type;
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/* Counters */
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vlib_combined_counter_main_t counter_main;
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/* vector of free l2tpv3 tunnel interfaces */
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u32 *free_l2tpv3_tunnel_hw_if_indices;
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/* show device instance by real device instance */
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u32 *dev_inst_by_real;
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/* convenience */
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vlib_main_t *vlib_main;
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vnet_main_t *vnet_main;
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} l2t_main_t;
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/* Packet trace structure */
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typedef struct
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{
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int is_user_to_network;
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u32 session_index;
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ip6_address_t our_address;
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ip6_address_t client_address;
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} l2t_trace_t;
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l2t_main_t l2t_main;
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extern vlib_node_registration_t l2t_encap_node;
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extern vlib_node_registration_t l2t_decap_node;
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extern vlib_node_registration_t l2t_decap_local_node;
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enum
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{
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SESSION_COUNTER_USER_TO_NETWORK = 0,
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SESSION_COUNTER_NETWORK_TO_USER,
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};
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static inline u32
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session_index_to_counter_index (u32 session_index, u32 counter_id)
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{
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return ((session_index << 1) + counter_id);
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}
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u8 *format_l2t_trace (u8 * s, va_list * args);
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typedef struct
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{
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/* Any per-interface config would go here */
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} ip6_l2tpv3_config_t;
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uword unformat_pg_l2tp_header (unformat_input_t * input, va_list * args);
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void l2tp_encap_init (vlib_main_t * vm);
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void l2tp_decap_init (void);
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int create_l2tpv3_ipv6_tunnel (l2t_main_t * lm,
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ip6_address_t * client_address,
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ip6_address_t * our_address,
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u32 local_session_id,
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u32 remote_session_id,
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u64 local_cookie,
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u64 remote_cookie,
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int l2_sublayer_present,
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u32 encap_fib_index, u32 * sw_if_index);
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int l2tpv3_set_tunnel_cookies (l2t_main_t * lm,
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u32 sw_if_index,
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u64 new_local_cookie, u64 new_remote_cookie);
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int l2tpv3_interface_enable_disable (vnet_main_t * vnm,
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u32 sw_if_index, int enable_disable);
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#endif /* __included_l2tp_h__ */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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