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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/* SPDX-License-Identifier: Apache-2.0
* Copyright(c) 2022 Cisco Systems, Inc.
*/
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vlib/stats/stats.h>
enum
{
NODE_CLOCKS,
NODE_VECTORS,
NODE_CALLS,
NODE_SUSPENDS,
N_NODE_COUNTERS
};
struct
{
u32 entry_index;
char *name;
} node_counters[] = {
[NODE_CLOCKS] = { .name = "clocks" },
[NODE_VECTORS] = { .name = "vectors" },
[NODE_CALLS] = { .name = "calls" },
[NODE_SUSPENDS] = { .name = "suspends" },
};
static struct
{
u8 *name;
u32 symlinks[N_NODE_COUNTERS];
} *node_data = 0;
static vlib_stats_string_vector_t node_names = 0;
static inline void
update_node_counters (vlib_stats_segment_t *sm)
{
clib_bitmap_t *bmp = 0;
vlib_main_t **stat_vms = 0;
vlib_node_t ***node_dups = 0;
u32 n_nodes;
int i, j;
vlib_node_get_nodes (0 /* vm, for barrier sync */,
(u32) ~0 /* all threads */, 1 /* include stats */,
0 /* barrier sync */, &node_dups, &stat_vms);
n_nodes = vec_len (node_dups[0]);
vec_validate (node_data, n_nodes - 1);
for (i = 0; i < n_nodes; i++)
if (vec_is_equal (node_data[i].name, node_dups[0][i]) == 0)
bmp = clib_bitmap_set (bmp, i, 1);
if (bmp)
{
u32 last_thread = vlib_get_n_threads ();
vlib_stats_segment_lock ();
clib_bitmap_foreach (i, bmp)
{
if (node_data[i].name)
{
vec_free (node_data[i].name);
for (j = 0; j < ARRAY_LEN (node_data->symlinks); j++)
vlib_stats_remove_entry (node_data[i].symlinks[j]);
}
}
/* We can't merge the loops because a node index corresponding to a given
* node name can change between 2 updates. Otherwise, we could add
* already existing symlinks or delete valid ones.
*/
clib_bitmap_foreach (i, bmp)
{
vlib_node_t *n = node_dups[0][i];
node_data[i].name = vec_dup (n->name);
vlib_stats_set_string_vector (&node_names, n->index, "%v", n->name);
for (int j = 0; j < ARRAY_LEN (node_counters); j++)
{
vlib_stats_validate (node_counters[j].entry_index, last_thread,
n_nodes - 1);
node_data[i].symlinks[j] = vlib_stats_add_symlink (
node_counters[j].entry_index, n->index, "/nodes/%U/%s",
format_vlib_stats_symlink, n->name, node_counters[j].name);
ASSERT (node_data[i].symlinks[j] != CLIB_U32_MAX);
}
}
vlib_stats_segment_unlock ();
vec_free (bmp);
}
for (j = 0; j < vec_len (node_dups); j++)
{
vlib_node_t **nodes = node_dups[j];
for (i = 0; i < vec_len (nodes); i++)
{
counter_t **counters;
counter_t *c;
vlib_node_t *n = nodes[i];
counters = vlib_stats_get_entry_data_pointer (
node_counters[NODE_CLOCKS].entry_index);
c = counters[j];
c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
counters = vlib_stats_get_entry_data_pointer (
node_counters[NODE_VECTORS].entry_index);
c = counters[j];
c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
counters = vlib_stats_get_entry_data_pointer (
node_counters[NODE_CALLS].entry_index);
c = counters[j];
c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
counters = vlib_stats_get_entry_data_pointer (
node_counters[NODE_SUSPENDS].entry_index);
c = counters[j];
c[n->index] = n->stats_total.suspends - n->stats_last_clear.suspends;
}
vec_free (node_dups[j]);
}
vec_free (node_dups);
vec_free (stat_vms);
}
static void
do_stat_segment_updates (vlib_main_t *vm, vlib_stats_segment_t *sm)
{
if (sm->node_counters_enabled)
update_node_counters (sm);
vlib_stats_collector_t *c;
pool_foreach (c, sm->collectors)
{
vlib_stats_collector_data_t data = {
.entry_index = c->entry_index,
.vector_index = c->vector_index,
.private_data = c->private_data,
.entry = sm->directory_vector + c->entry_index,
};
c->fn (&data);
}
/* Heartbeat, so clients detect we're still here */
sm->directory_vector[STAT_COUNTER_HEARTBEAT].value++;
}
static uword
stat_segment_collector_process (vlib_main_t *vm, vlib_node_runtime_t *rt,
vlib_frame_t *f)
{
vlib_stats_segment_t *sm = vlib_stats_get_segment ();
if (sm->node_counters_enabled)
{
node_names = vlib_stats_add_string_vector ("/sys/node/names");
ASSERT (node_names);
for (int x = 0; x < ARRAY_LEN (node_counters); x++)
{
node_counters[x].entry_index = vlib_stats_add_counter_vector (
"/sys/node/%s", node_counters[x].name);
ASSERT (node_counters[x].entry_index != CLIB_U32_MAX);
}
}
sm->directory_vector[STAT_COUNTER_BOOTTIME].value = unix_time_now ();
while (1)
{
do_stat_segment_updates (vm, sm);
vlib_process_suspend (vm, sm->update_interval);
}
return 0; /* or not */
}
VLIB_REGISTER_NODE (stat_segment_collector, static) = {
.function = stat_segment_collector_process,
.name = "statseg-collector-process",
.type = VLIB_NODE_TYPE_PROCESS,
};
|
