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-rw-r--r--vnet/vnet/sr/sr.h262
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diff --git a/vnet/vnet/sr/sr.h b/vnet/vnet/sr/sr.h
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-/*
- * Copyright (c) 2015 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.
- */
-/**
- * @file
- * @brief Segment Routing header
- *
- * @note sr_replicate only works using DPDK today
- */
-#ifndef included_vnet_sr_h
-#define included_vnet_sr_h
-
-#include <vnet/vnet.h>
-#include <vnet/sr/sr_packet.h>
-#include <vnet/ip/ip6_packet.h>
-
-#include <openssl/opensslconf.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <openssl/crypto.h>
-#include <openssl/sha.h>
-#include <openssl/opensslv.h>
-#include <openssl/hmac.h>
-
-/**
- * @brief Segment Route tunnel key
- */
-typedef struct
-{
- ip6_address_t src;
- ip6_address_t dst;
-} ip6_sr_tunnel_key_t;
-
-/**
- * @brief Segment Route tunnel
- */
-typedef struct
-{
- /** src, dst address */
- ip6_sr_tunnel_key_t key;
-
- /** Pptional tunnel name */
- u8 *name;
-
- /** Mask width for FIB entry */
- u32 dst_mask_width;
-
- /** First hop, to save 1 elt in the segment list */
- ip6_address_t first_hop;
-
- /** RX Fib index */
- u32 rx_fib_index;
- /** TX Fib index */
- u32 tx_fib_index;
-
- /** The actual ip6 SR header */
- u8 *rewrite;
-
- /** Indicates that this tunnel is part of a policy comprising
- of multiple tunnels. If == ~0 tunnel is not part of a policy */
- u32 policy_index;
-} ip6_sr_tunnel_t;
-
-/**
- * @brief Shared secret for keyed-hash message authentication code (HMAC).
- */
-typedef struct
-{
- u8 *shared_secret;
-} ip6_sr_hmac_key_t;
-
-/**
- * @brief Args required for add/del tunnel.
- *
- * Else we end up passing a LOT of parameters around.
- */
-typedef struct
-{
- /** Key (header imposition case) */
- ip6_address_t *src_address;
- ip6_address_t *dst_address;
- u32 dst_mask_width;
- u32 rx_table_id;
- u32 tx_table_id;
-
- /** optional name argument - for referencing SR tunnel/policy by name */
- u8 *name;
-
- /** optional policy name */
- u8 *policy_name;
-
- /** segment list, when inserting an ip6 SR header */
- ip6_address_t *segments;
-
- /**
- * "Tag" list, aka segments inserted at the end of the list,
- * past last_seg
- */
- ip6_address_t *tags;
-
- /** Shared secret => generate SHA-256 HMAC security fields */
- u8 *shared_secret;
-
- /** Flags, e.g. cleanup, policy-list flags */
- u16 flags_net_byte_order;
-
- /** Delete the tunnnel? */
- u8 is_del;
-} ip6_sr_add_del_tunnel_args_t;
-
-/**
- * @brief Args for creating a policy.
- *
- * Typically used for multicast replication.
- * ie a multicast address can be associated with a policy,
- * then replicated across a number of unicast SR tunnels.
- */
-typedef struct
-{
- /** policy name */
- u8 *name;
-
- /** tunnel names */
- u8 **tunnel_names;
-
- /** Delete the policy? */
- u8 is_del;
-} ip6_sr_add_del_policy_args_t;
-
-/**
- * @brief Segment Routing policy.
- *
- * Typically used for multicast replication.
- * ie a multicast address can be associated with a policy,
- * then replicated across a number of unicast SR tunnels.
- */
-typedef struct
-{
- /** name of policy */
- u8 *name;
-
- /** vector to SR tunnel index */
- u32 *tunnel_indices;
-
-} ip6_sr_policy_t;
-
-/**
- * @brief Args for mapping of multicast address to policy name.
- *
- * Typically used for multicast replication.
- * ie a multicast address can be associated with a policy,
- * then replicated across a number of unicast SR tunnels.
- */
-typedef struct
-{
- /** multicast IP6 address */
- ip6_address_t *multicast_address;
-
- /** name of policy to map to */
- u8 *policy_name;
-
- /** Delete the mapping */
- u8 is_del;
-
-} ip6_sr_add_del_multicastmap_args_t;
-
-/**
- * @brief Segment Routing state.
- */
-typedef struct
-{
- /** pool of tunnel instances, sr entry only */
- ip6_sr_tunnel_t *tunnels;
-
- /** find an sr "tunnel" by its outer-IP src/dst */
- uword *tunnel_index_by_key;
-
- /** find an sr "tunnel" by its name */
- uword *tunnel_index_by_name;
-
- /** policy pool */
- ip6_sr_policy_t *policies;
-
- /** find a policy by name */
- uword *policy_index_by_policy_name;
-
- /** multicast address to policy mapping */
- uword *policy_index_by_multicast_address;
-
- /** hmac key id by shared secret */
- uword *hmac_key_by_shared_secret;
-
- /** ip6-rewrite next index for reinstalling the original dst address */
- u32 ip6_rewrite_sr_next_index;
-
- /** ip6-replicate next index for multicast tunnel */
- u32 ip6_lookup_sr_replicate_index;
-
- /** application API callback */
- void *sr_local_cb;
-
- /** validate hmac keys */
- u8 validate_hmac;
-
- /** pool of hmac keys */
- ip6_sr_hmac_key_t *hmac_keys;
-
- /** Openssl var */
- EVP_MD *md;
- /** Openssl var */
- HMAC_CTX *hmac_ctx;
-
- /** enable debug spew */
- u8 is_debug;
-
- /** convenience */
- vlib_main_t *vlib_main;
- /** convenience */
- vnet_main_t *vnet_main;
-} ip6_sr_main_t;
-
-ip6_sr_main_t sr_main;
-
-format_function_t format_ip6_sr_header;
-format_function_t format_ip6_sr_header_with_length;
-
-vlib_node_registration_t ip6_sr_input_node;
-
-#if DPDK > 0
-extern vlib_node_registration_t sr_replicate_node;
-#endif /* DPDK */
-
-int ip6_sr_add_del_tunnel (ip6_sr_add_del_tunnel_args_t * a);
-int ip6_sr_add_del_policy (ip6_sr_add_del_policy_args_t * a);
-int ip6_sr_add_del_multicastmap (ip6_sr_add_del_multicastmap_args_t * a);
-
-void vnet_register_sr_app_callback (void *cb);
-
-void sr_fix_hmac (ip6_sr_main_t * sm, ip6_header_t * ip,
- ip6_sr_header_t * sr);
-
-#endif /* included_vnet_sr_h */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */