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/* 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>
static void
stat_validate_counter_vector2 (vlib_stats_entry_t *ep, u32 max1, u32 max2)
{
counter_t **counters = ep->data;
int i;
vec_validate_aligned (counters, max1, CLIB_CACHE_LINE_BYTES);
for (i = 0; i <= max1; i++)
vec_validate_aligned (counters[i], max2, CLIB_CACHE_LINE_BYTES);
ep->data = counters;
}
static void
stat_validate_counter_vector (vlib_stats_entry_t *ep, u32 max)
{
vlib_thread_main_t *tm = vlib_get_thread_main ();
ASSERT (tm->n_vlib_mains > 0);
stat_validate_counter_vector2 (ep, tm->n_vlib_mains, max);
}
static inline void
update_node_counters (vlib_stats_segment_t *sm)
{
vlib_main_t **stat_vms = 0;
vlib_node_t ***node_dups = 0;
int i, j;
static u32 no_max_nodes = 0;
vlib_node_get_nodes (0 /* vm, for barrier sync */,
(u32) ~0 /* all threads */, 1 /* include stats */,
0 /* barrier sync */, &node_dups, &stat_vms);
u32 l = vec_len (node_dups[0]);
u8 *symlink_name = 0;
/*
* Extend performance nodes if necessary
*/
if (l > no_max_nodes)
{
void *oldheap = clib_mem_set_heap (sm->heap);
vlib_stats_segment_lock ();
stat_validate_counter_vector (
&sm->directory_vector[STAT_COUNTER_NODE_CLOCKS], l - 1);
stat_validate_counter_vector (
&sm->directory_vector[STAT_COUNTER_NODE_VECTORS], l - 1);
stat_validate_counter_vector (
&sm->directory_vector[STAT_COUNTER_NODE_CALLS], l - 1);
stat_validate_counter_vector (
&sm->directory_vector[STAT_COUNTER_NODE_SUSPENDS], l - 1);
vec_validate (sm->nodes, l - 1);
vlib_stats_entry_t *ep;
ep = &sm->directory_vector[STAT_COUNTER_NODE_NAMES];
ep->data = sm->nodes;
/* Update names dictionary */
vlib_node_t **nodes = node_dups[0];
int i;
for (i = 0; i < vec_len (nodes); i++)
{
vlib_node_t *n = nodes[i];
u8 *s = format (0, "%v%c", n->name, 0);
if (sm->nodes[n->index])
vec_free (sm->nodes[n->index]);
sm->nodes[n->index] = s;
oldheap = clib_mem_set_heap (oldheap);
#define _(E, t, name, p) \
vlib_stats_add_symlink (STAT_COUNTER_##E, n->index, "/nodes/%U/" #name, \
format_vlib_stats_symlink, s);
foreach_stat_segment_node_counter_name
#undef _
oldheap = clib_mem_set_heap (oldheap);
}
vlib_stats_segment_unlock ();
clib_mem_set_heap (oldheap);
no_max_nodes = l;
}
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];
if (j == 0)
{
if (strncmp ((char *) sm->nodes[n->index], (char *) n->name,
strlen ((char *) sm->nodes[n->index])))
{
u32 vector_index;
void *oldheap = clib_mem_set_heap (sm->heap);
vlib_stats_segment_lock ();
u8 *s = format (0, "%v%c", n->name, 0);
clib_mem_set_heap (oldheap);
#define _(E, t, name, p) \
vec_reset_length (symlink_name); \
symlink_name = format (symlink_name, "/nodes/%U/" #name, \
format_vlib_stats_symlink, sm->nodes[n->index]); \
vector_index = vlib_stats_find_entry_index ("%v", symlink_name); \
ASSERT (vector_index != -1); \
vlib_stats_rename_symlink (vector_index, "/nodes/%U/" #name, \
format_vlib_stats_symlink, s);
foreach_stat_segment_node_counter_name
#undef _
vec_free (symlink_name);
clib_mem_set_heap (sm->heap);
vec_free (sm->nodes[n->index]);
sm->nodes[n->index] = s;
vlib_stats_segment_unlock ();
clib_mem_set_heap (oldheap);
}
}
counters = sm->directory_vector[STAT_COUNTER_NODE_CLOCKS].data;
c = counters[j];
c[n->index] = n->stats_total.clocks - n->stats_last_clear.clocks;
counters = sm->directory_vector[STAT_COUNTER_NODE_VECTORS].data;
c = counters[j];
c[n->index] = n->stats_total.vectors - n->stats_last_clear.vectors;
counters = sm->directory_vector[STAT_COUNTER_NODE_CALLS].data;
c = counters[j];
c[n->index] = n->stats_total.calls - n->stats_last_clear.calls;
counters = sm->directory_vector[STAT_COUNTER_NODE_SUSPENDS].data;
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 ();
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,
};
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