Neale Ranns
4c3ba81709
this can be used by e.g. tunnels so it doesn't need to be implemented for each tunnel type. Change-Id: I0790f89aa49f83421612b35108cce67693285999 Signed-off-by: Neale Ranns <nranns@cisco.com>
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
/*
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* ipip.h: types/functions for ipip.
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*
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* Copyright (c) 2018 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 aipiped 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_ipip_h
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#define included_ipip_h
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#include <vnet/adj/adj_types.h>
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#include <vnet/ip/ip6_packet.h>
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#include <vnet/ip/format.h>
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#include <vnet/ip/ip.h>
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#include <vnet/vnet.h>
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extern vnet_hw_interface_class_t ipip_hw_interface_class;
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#define foreach_ipip_error \
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/* Must be first. */ \
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_(DECAP_PKTS, "packets decapsulated") \
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_(BAD_PROTOCOL, "bad protocol") \
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_(NO_TUNNEL, "no tunnel") \
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_(FRAGMENTED_PACKET, "fragmented outer packet")
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typedef enum
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{
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#define _(sym, str) IPIP_ERROR_##sym,
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foreach_ipip_error
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#undef _
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IPIP_N_ERROR,
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} ipip_error_t;
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/**
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* @brief IPIP Tunnel key
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*/
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typedef enum
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{
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IPIP_TRANSPORT_IP4,
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IPIP_TRANSPORT_IP6,
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} ipip_transport_t;
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typedef struct
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{
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ip46_address_t src;
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ip46_address_t dst;
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ipip_transport_t transport;
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u32 fib_index;
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} __attribute__ ((packed)) ipip_tunnel_key_t;
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typedef enum
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{
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IPIP_MODE_P2P = 0,
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IPIP_MODE_6RD,
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} ipip_mode_t;
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/**
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* @brief A representation of a IPIP tunnel
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*/
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typedef struct
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{
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/* Required for pool_get_aligned */
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CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
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ipip_mode_t mode;
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ipip_transport_t transport;
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ipip_tunnel_key_t *key;
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ip46_address_t tunnel_src;
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ip46_address_t tunnel_dst;
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u32 fib_index;
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u32 hw_if_index;
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u32 sw_if_index;
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u32 dev_instance; /* Real device instance in tunnel vector */
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u32 user_instance; /* Instance name being shown to user */
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u8 tc_tos;
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struct
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{
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ip6_address_t ip6_prefix;
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ip4_address_t ip4_prefix;
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u8 ip6_prefix_len;
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u8 ip4_prefix_len;
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u8 shift;
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bool security_check;
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u32 ip6_fib_index;
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} sixrd;
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} ipip_tunnel_t;
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typedef struct
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{
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ipip_tunnel_t *tunnels;
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uword *tunnel_by_key;
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u32 *tunnel_index_by_sw_if_index;
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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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/* Record used instances */
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uword *instance_used;
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bool ip4_protocol_registered;
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bool ip6_protocol_registered;
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} ipip_main_t;
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extern ipip_main_t ipip_main;
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extern vlib_node_registration_t ipip4_input_node;
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extern vlib_node_registration_t ipip6_input_node;
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/*
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* sixrd_get_addr_net
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*/
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static_always_inline u32
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sixrd_get_addr_net (const ipip_tunnel_t * t, u64 dal)
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{
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/* 1:1 mode */
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if (t->sixrd.ip4_prefix_len == 32)
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return (t->sixrd.ip4_prefix.as_u32);
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dal = clib_net_to_host_u64 (dal);
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/* Grab 32 - ip4_prefix_len bits out of IPv6 address from offset
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* ip6_prefix_len */
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u32 mask = ~(~0ULL << (32 - t->sixrd.ip4_prefix_len));
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u32 ip4 =
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clib_net_to_host_u32 (t->sixrd.
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ip4_prefix.as_u32) | ((u32) (dal >> t->sixrd.
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shift) & mask);
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return clib_host_to_net_u32 (ip4);
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}
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int ipip_add_tunnel (ipip_transport_t transport, u32 instance,
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ip46_address_t * src, ip46_address_t * dst,
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u32 fib_index, u8 tc_tos, u32 * sw_if_indexp);
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int ipip_del_tunnel (u32 sw_if_index);
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int sixrd_add_tunnel (ip6_address_t * ip6_prefix, u8 ip6_prefix_len,
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ip4_address_t * ip4_prefix, u8 ip4_prefix_len,
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ip4_address_t * ip4_src, bool security_check,
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u32 ip4_fib_index, u32 ip6_fib_index,
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u32 * sw_if_index);
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int sixrd_del_tunnel (u32 sw_if_index);
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void ipip_tunnel_db_add (ipip_tunnel_t * t, ipip_tunnel_key_t * key);
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void ipip_tunnel_db_remove (ipip_tunnel_t * t);
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ipip_tunnel_t *ipip_tunnel_db_find (ipip_tunnel_key_t * key);
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ipip_tunnel_t *ipip_tunnel_db_find_by_sw_if_index (u32 sw_if_index);
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#endif
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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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