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Diffstat (limited to 'vnet/vnet/l2tp/l2tp.h')
-rw-r--r-- | vnet/vnet/l2tp/l2tp.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/vnet/vnet/l2tp/l2tp.h b/vnet/vnet/l2tp/l2tp.h new file mode 100644 index 00000000000..9e7ac131a7f --- /dev/null +++ b/vnet/vnet/l2tp/l2tp.h @@ -0,0 +1,131 @@ +/* + * 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 <vnet/l2tp/packet.h> + +typedef struct { + /* ip6 addresses */ + ip6_address_t our_address; + ip6_address_t client_address; + + /* $$$$ maybe add encap-path lookup fib ID? */ + + /* 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; + + u8 l2tp_hdr_size; + u8 l2_sublayer_present; + u8 cookie_flags; /* in host byte order */ +} 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; + +} 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; + +l2t_main_t l2t_main; +vlib_node_registration_t l2t_encap_node; +vlib_node_registration_t l2t_decap_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); +void l2tp_decap_init (void); +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 * 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__ */ |