summaryrefslogtreecommitdiffstats
path: root/src/plugins/srv6-ad-flow/ad-flow.h
blob: e92a21d93c5b3c3976462e9ca48ce1575bdfab6e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
/*
 * 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.
 */
#ifndef __included_srv6_ad_flow_h__
#define __included_srv6_ad_flow_h__

#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vnet/srv6/sr.h>
#include <vnet/srv6/sr_packet.h>

#include <vppinfra/error.h>
#include <vppinfra/elog.h>

#include <vppinfra/dlist.h>
#include <vppinfra/bihash_40_8.h>

#define AD_TYPE_IP4 IP_PROTOCOL_IP_IN_IP
#define AD_TYPE_IP6 IP_PROTOCOL_IPV6

#define SRV6_AD_FLOW_DEFAULT_CACHE_SIZE 100
#define SRV6_AD_CACHE_TIMEOUT		300

/*
 * Cache entries
 */
typedef struct
{
  /* Cache key (5-tuple) */
  struct
  {
    ip46_address_t s_addr;
    ip46_address_t d_addr;
    u8 proto;
    u16 s_port;
    u16 d_port;
  } key;

  /* Cached encapsulation headers */
  u32 rw_len;
  u8 *rw_data;

  /* Index in global LRU list */
  u32 lru_index;

  /* Last update timestamp */
  f64 last_lru_update;

  /* Last heard timestamp */
  f64 last_heard;
} srv6_ad_flow_entry_t;

/*
 * This is the memory that will be stored per each localsid
 * the user instantiates
 */
typedef struct
{
  ip46_address_t nh_addr; /**< Proxied device address */
  u32 sw_if_index_out;	  /**< Outgoing iface to proxied dev. */
  u32 nh_adj;		  /**< Adjacency index for out. iface */
  u8 inner_type;

  u32 sw_if_index_in; /**< Incoming iface from proxied dev. */

  u32 cache_size;
  u32 cache_buckets;
  uword cache_memory_size;

  clib_bihash_40_8_t ftable;   /**< Flow table */
  srv6_ad_flow_entry_t *cache; /**< Cache table */
  dlist_elt_t *lru_pool;
  u32 lru_head_index;

  u32 index;
} srv6_ad_flow_localsid_t;

typedef struct
{
  u16 msg_id_base; /**< API message ID base */

  vlib_main_t *vlib_main; /**< [convenience] vlib main */
  vnet_main_t *vnet_main; /**< [convenience] vnet main */

  dpo_type_t srv6_ad_flow_dpo_type; /**< DPO type */

  u32 srv6_localsid_behavior_id; /**< SRv6 LocalSID behavior number */

  u32 *sw_iface_localsid2; /**< Retrieve local SID from iface */
  u32 *sw_iface_localsid4; /**< Retrieve local SID from iface */
  u32 *sw_iface_localsid6; /**< Retrieve local SID from iface */

  srv6_ad_flow_localsid_t **sids; /**< Pool of AD SID pointers */

  vlib_combined_counter_main_t
    sid_bypass_counters; /**< Packets/bytes bypassing NF */
  vlib_combined_counter_main_t sid_punt_counters; /**< Packets/bytes punted */
  vlib_combined_counter_main_t sid_cache_full_counters;

  vlib_combined_counter_main_t
    rw_valid_counters; /**< Valid rewrite counters */
  vlib_combined_counter_main_t
    rw_invalid_counters; /**< Invalid rewrite counters */
} srv6_ad_flow_main_t;

typedef struct
{
  srv6_ad_flow_localsid_t *ls;
  f64 now;
} srv6_ad_is_idle_entry_ctx_t;

extern srv6_ad_flow_main_t srv6_ad_flow_main;

format_function_t format_srv6_ad_flow_localsid;
unformat_function_t unformat_srv6_ad_flow_localsid;

void srv6_ad_flow_dpo_lock (dpo_id_t *dpo);
void srv6_ad_flow_dpo_unlock (dpo_id_t *dpo);

extern vlib_node_registration_t srv6_ad_flow_localsid_node;

#endif /* __included_srv6_ad_flow_h__ */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */