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
142
143
144
145
146
147
|
/*
* Copyright (c) 2011-2016 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_cdp_node_h__
#define __included_cdp_node_h__
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/snap/snap.h>
#include <vnet/hdlc/hdlc.h>
#include <vnet/hdlc/packet.h>
#include <vppinfra/format.h>
#include <vppinfra/hash.h>
#include <vnet/cdp/cdp_protocol.h>
typedef enum
{
CDP_PACKET_TEMPLATE_ETHERNET,
CDP_PACKET_TEMPLATE_HDLC,
CDP_PACKET_TEMPLATE_SRP,
CDP_N_PACKET_TEMPLATES,
} cdp_packet_template_id_t;
typedef struct
{
/* neighbor's vlib software interface index */
u32 sw_if_index;
/* Timers */
f64 last_heard;
f64 last_sent;
/* Neighbor time-to-live (usually 180s) */
u8 ttl_in_seconds;
/* "no cdp run" or similar */
u8 disabled;
/* tx packet template id for this neighbor */
u8 packet_template_index;
/* Jenkins hash optimization: avoid tlv scan, send short keepalive msg */
u8 last_packet_signature_valid;
uword last_packet_signature;
/* Info we actually keep about each neighbor */
u8 *device_name;
u8 *version;
u8 *port_id;
u8 *platform;
/* last received packet, for the J-hash optimization */
u8 *last_rx_pkt;
} cdp_neighbor_t;
#define foreach_neighbor_string_field \
_(device_name) \
_(version) \
_(port_id) \
_(platform)
typedef struct
{
/* pool of cdp neighbors */
cdp_neighbor_t *neighbors;
/* tx pcap debug enable */
u8 tx_pcap_debug;
/* rapidly find a neighbor by vlib software interface index */
uword *neighbor_by_sw_if_index;
/* Background process node index */
u32 cdp_process_node_index;
/* Packet templates for different encap types */
vlib_packet_template_t packet_templates[CDP_N_PACKET_TEMPLATES];
/* convenience variables */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
} cdp_main_t;
cdp_main_t cdp_main;
/* Packet counters */
#define foreach_cdp_error \
_ (NONE, "good cdp packets (processed)") \
_ (CACHE_HIT, "good cdp packets (cache hit)") \
_ (BAD_TLV, "cdp packets with bad TLVs") \
_ (PROTOCOL_VERSION, "cdp packets with bad protocol versions") \
_ (CHECKSUM, "cdp packets with bad checksums") \
_ (DISABLED, "cdp packets received on disabled interfaces")
typedef enum
{
#define _(sym,str) CDP_ERROR_##sym,
foreach_cdp_error
#undef _
CDP_N_ERROR,
} cdp_error_t;
/* cdp packet trace capture */
typedef struct
{
u32 len;
u8 data[400];
} cdp_input_trace_t;
typedef enum
{
CDP_EVENT_SEND_NEIGHBOR,
CDP_EVENT_SEND_KEEPALIVE,
} cdp_process_event_t;
cdp_error_t cdp_input (vlib_main_t * vm, vlib_buffer_t * b0, u32 bi0);
void cdp_periodic (vlib_main_t * vm);
void cdp_keepalive (cdp_main_t * cm, cdp_neighbor_t * n);
u16 cdp_checksum (void *p, int count);
u8 *cdp_input_format_trace (u8 * s, va_list * args);
serialize_function_t serialize_cdp_main, unserialize_cdp_main;
#endif /* __included_cdp_node_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
