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/*
* Copyright (c) 2018 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_stat_segment_h
#define included_stat_segment_h
#include <stdatomic.h>
#include <vlib/vlib.h>
#include <vppinfra/socket.h>
/* Default socket to exchange segment fd */
#define STAT_SEGMENT_SOCKET_FILE "/run/vpp/stats.sock"
typedef enum
{
STAT_DIR_TYPE_ILLEGAL = 0,
STAT_DIR_TYPE_SCALAR_INDEX,
STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE,
STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED,
STAT_DIR_TYPE_ERROR_INDEX,
} stat_directory_type_t;
typedef enum
{
STAT_COUNTER_VECTOR_RATE = 0,
STAT_COUNTER_INPUT_RATE,
STAT_COUNTER_LAST_UPDATE,
STAT_COUNTER_LAST_STATS_CLEAR,
STAT_COUNTER_HEARTBEAT,
STAT_COUNTER_NODE_CLOCKS,
STAT_COUNTER_NODE_VECTORS,
STAT_COUNTER_NODE_CALLS,
STAT_COUNTER_NODE_SUSPENDS,
STAT_COUNTERS
} stat_segment_counter_t;
#define foreach_stat_segment_counter_name \
_(VECTOR_RATE, SCALAR_INDEX, vector_rate,) \
_(INPUT_RATE, SCALAR_INDEX, input_rate,) \
_(LAST_UPDATE, SCALAR_INDEX, last_update,) \
_(LAST_STATS_CLEAR, SCALAR_INDEX, last_stats_clear,) \
_(HEARTBEAT, SCALAR_INDEX, heartbeat,) \
_(NODE_CLOCKS, COUNTER_VECTOR_SIMPLE, clocks, /node) \
_(NODE_VECTORS, COUNTER_VECTOR_SIMPLE, vectors, /node) \
_(NODE_CALLS, COUNTER_VECTOR_SIMPLE, calls, /node) \
_(NODE_SUSPENDS, COUNTER_VECTOR_SIMPLE, suspends, /node)
typedef struct
{
stat_directory_type_t type;
union {
uint64_t offset;
uint64_t index;
uint64_t value;
};
uint64_t offset_vector;
char name[128]; // TODO change this to pointer to "somewhere"
} stat_segment_directory_entry_t;
/* Default stat segment 32m */
#define STAT_SEGMENT_DEFAULT_SIZE (32<<20)
/*
* Shared header first in the shared memory segment.
*/
typedef struct
{
atomic_int_fast64_t epoch;
atomic_int_fast64_t in_progress;
atomic_int_fast64_t directory_offset;
atomic_int_fast64_t error_offset;
atomic_int_fast64_t stats_offset;
} stat_segment_shared_header_t;
static inline uint64_t
stat_segment_offset (void *start, void *data)
{
return (char *) data - (char *) start;
}
static inline void *
stat_segment_pointer (void *start, uint64_t offset)
{
return ((char *) start + offset);
}
typedef struct
{
/* statistics segment */
uword *directory_vector_by_name;
stat_segment_directory_entry_t *directory_vector;
clib_spinlock_t *stat_segment_lockp;
clib_socket_t *socket;
u8 *socket_name;
ssize_t memory_size;
u8 node_counters_enabled;
void *heap;
stat_segment_shared_header_t *shared_header; /* pointer to shared memory segment */
int memfd;
u64 last_input_packets;
} stat_segment_main_t;
extern stat_segment_main_t stat_segment_main;
#endif
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