diff options
Diffstat (limited to 'src/vnet/ipip/ipip.h')
| -rw-r--r-- | src/vnet/ipip/ipip.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/vnet/ipip/ipip.h b/src/vnet/ipip/ipip.h new file mode 100644 index 00000000000..e9277d8a061 --- /dev/null +++ b/src/vnet/ipip/ipip.h @@ -0,0 +1,168 @@ +/* + * ipip.h: types/functions for ipip. + * + * Copyright (c) 2018 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 aipiped 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_ipip_h +#define included_ipip_h + +#include <vnet/adj/adj_types.h> +#include <vnet/ip/ip6_packet.h> +#include <vnet/ip/format.h> +#include <vnet/ip/ip.h> +#include <vnet/vnet.h> + +extern vnet_hw_interface_class_t ipip_hw_interface_class; + +#define foreach_ipip_error \ + /* Must be first. */ \ + _(DECAP_PKTS, "packets decapsulated") \ + _(BAD_PROTOCOL, "bad protocol") \ + _(NO_TUNNEL, "no tunnel") + +typedef enum +{ +#define _(sym, str) IPIP_ERROR_##sym, + foreach_ipip_error +#undef _ + IPIP_N_ERROR, +} ipip_error_t; + +/** + * @brief IPIP Tunnel key + */ +typedef enum +{ + IPIP_TRANSPORT_IP4, + IPIP_TRANSPORT_IP6, +} ipip_transport_t; + +typedef struct +{ + ipip_transport_t transport; + u32 fib_index; + ip46_address_t src; + ip46_address_t dst; +} __attribute__ ((packed)) ipip_tunnel_key_t; + +typedef enum +{ + IPIP_MODE_P2P = 0, + IPIP_MODE_6RD, +} ipip_mode_t; + +/** + * @brief A representation of a IPIP tunnel + */ +typedef struct +{ + ipip_mode_t mode; + ipip_transport_t transport; + ipip_tunnel_key_t *key; + ip46_address_t tunnel_src; + ip46_address_t tunnel_dst; + u32 fib_index; + u32 hw_if_index; + u32 sw_if_index; + u32 dev_instance; /* Real device instance in tunnel vector */ + u32 user_instance; /* Instance name being shown to user */ + + union + { + struct + { + fib_node_t node; + fib_node_index_t fib_entry_index; + u32 sibling_index; + } p2p; + struct + { + ip6_address_t ip6_prefix; + ip4_address_t ip4_prefix; + u8 ip6_prefix_len; + u8 ip4_prefix_len; + u8 shift; + bool security_check; + } sixrd; + }; +} ipip_tunnel_t; + +typedef struct +{ + ipip_tunnel_t *tunnels; + uword *tunnel_by_key; + u32 *tunnel_index_by_sw_if_index; + fib_node_type_t fib_node_type; + + /* convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + /* Record used instances */ + uword *instance_used; + + bool ip4_protocol_registered; + bool ip6_protocol_registered; +} ipip_main_t; + +extern ipip_main_t ipip_main; +extern vlib_node_registration_t ipip4_input_node; +extern vlib_node_registration_t ipip6_input_node; + +/* + * sixrd_get_addr_net + */ +static_always_inline u32 +sixrd_get_addr_net (const ipip_tunnel_t * t, u64 dal) +{ + /* 1:1 mode */ + if (t->sixrd.ip4_prefix_len == 32) + return (t->sixrd.ip4_prefix.as_u32); + + dal = clib_net_to_host_u64 (dal); + + /* Grab 32 - ip4_prefix_len bits out of IPv6 address from offset + * ip6_prefix_len */ + u32 mask = ~(~0ULL << (32 - t->sixrd.ip4_prefix_len)); + u32 ip4 = + clib_net_to_host_u32 (t->sixrd. + ip4_prefix.as_u32) | ((u32) (dal >> t->sixrd. + shift) & mask); + return clib_host_to_net_u32 (ip4); +} + +int ipip_add_tunnel (ipip_transport_t transport, u32 instance, + ip46_address_t * src, ip46_address_t * dst, + u32 fib_index, u32 * sw_if_indexp); +int ipip_del_tunnel (u32 sw_if_index); +int sixrd_add_tunnel (ip6_address_t * ip6_prefix, u8 ip6_prefix_len, + ip4_address_t * ip4_prefix, u8 ip4_prefix_len, + ip4_address_t * ip4_src, bool security_check, + u32 fib_index, u32 * sw_if_index); +int sixrd_del_tunnel (u32 sw_if_index); +void ipip_tunnel_db_add (ipip_tunnel_t * t, ipip_tunnel_key_t * key); +void ipip_tunnel_db_remove (ipip_tunnel_t * t); +ipip_tunnel_t *ipip_tunnel_db_find (ipip_tunnel_key_t * key); +ipip_tunnel_t *ipip_tunnel_db_find_by_sw_if_index (u32 sw_if_index); + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |