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/* Copyright (c) 2023, Nokia
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <odp/api/atomic.h>
#include <odp/api/buffer.h>
#include <odp/api/debug.h>
#include <odp/api/event.h>
#include <odp/api/hints.h>
#include <odp/api/packet.h>
#include <odp/api/shared_memory.h>
#include <odp_buffer_internal.h>
#include <odp_debug_internal.h>
#include <odp_event_internal.h>
#include <odp_event_validation_internal.h>
#include <odp_global_data.h>
#include <odp_init_internal.h>
#include <odp_libconfig_internal.h>
#include <odp_macros_internal.h>
#include <odp_print_internal.h>
#include <inttypes.h>
#include <string.h>
#define EVENT_VALIDATION_NONE 0
#define EVENT_VALIDATION_WARN 1
#define EVENT_VALIDATION_ABORT 2
#define EVENT_DATA_PRINT_MAX_LEN 128
typedef struct {
odp_atomic_u64_t err_count[_ODP_EV_MAX];
odp_shm_t shm;
} event_validation_global_t;
typedef struct {
const char *str;
} _odp_ev_info_t;
static event_validation_global_t *_odp_ev_glb;
#if _ODP_EVENT_VALIDATION
/* Table for mapping function IDs to API function names */
static const _odp_ev_info_t ev_info_tbl[] = {
[_ODP_EV_BUFFER_FREE] = {.str = "odp_buffer_free()"},
[_ODP_EV_BUFFER_FREE_MULTI] = {.str = "odp_buffer_free_multi()"},
[_ODP_EV_BUFFER_IS_VALID] = {.str = "odp_buffer_is_valid()"},
[_ODP_EV_EVENT_FREE] = {.str = "odp_event_free()"},
[_ODP_EV_EVENT_FREE_MULTI] = {.str = "odp_event_free_multi()"},
[_ODP_EV_EVENT_FREE_SP] = {.str = "odp_event_free()_sp"},
[_ODP_EV_EVENT_IS_VALID] = {.str = "odp_event_is_valid()"},
[_ODP_EV_PACKET_FREE] = {.str = "odp_packet_free()"},
[_ODP_EV_PACKET_FREE_MULTI] = {.str = "odp_packet_free_multi()"},
[_ODP_EV_PACKET_FREE_SP] = {.str = "odp_packet_free_sp()"},
[_ODP_EV_PACKET_IS_VALID] = {.str = "odp_packet_is_valid()"},
[_ODP_EV_QUEUE_ENQ] = {.str = "odp_queue_enq()"},
[_ODP_EV_QUEUE_ENQ_MULTI] = {.str = "odp_queue_enq_multi()"}
};
ODP_STATIC_ASSERT(_ODP_ARRAY_SIZE(ev_info_tbl) == _ODP_EV_MAX, "ev_info_tbl missing entries");
static void print_event_data(odp_event_t event, odp_event_type_t type)
{
const char *type_str;
const uint32_t bytes_per_row = 16;
uint32_t byte_len;
int num_rows, max_len, n;
int len = 0;
uint8_t *data;
if (type == ODP_EVENT_PACKET) {
odp_packet_t pkt = odp_packet_from_event(event);
data = odp_packet_data(pkt);
byte_len = odp_packet_seg_len(pkt);
type_str = "Packet";
} else {
odp_buffer_t buf = odp_buffer_from_event(event);
data = odp_buffer_addr(buf);
byte_len = odp_buffer_size(buf);
type_str = "Buffer";
}
if (byte_len > EVENT_DATA_PRINT_MAX_LEN)
byte_len = EVENT_DATA_PRINT_MAX_LEN;
num_rows = (byte_len + bytes_per_row - 1) / bytes_per_row;
max_len = 256 + (3 * byte_len) + (3 * num_rows);
n = max_len - 1;
char str[max_len];
len += _odp_snprint(&str[len], n - len, "%s %p data %p:\n", type_str, event, data);
while (byte_len) {
uint32_t row_len = byte_len > bytes_per_row ? bytes_per_row : byte_len;
len += _odp_snprint(&str[len], n - len, " ");
for (uint32_t i = 0; i < row_len; i++)
len += _odp_snprint(&str[len], n - len, " %02x", data[i]);
len += _odp_snprint(&str[len], n - len, "\n");
byte_len -= row_len;
data += row_len;
}
_ODP_PRINT("%s\n", str);
}
static inline int validate_event_endmark(odp_event_t event, _odp_ev_id_t id, odp_event_type_t type)
{
uint64_t err_count;
uint64_t *endmark_ptr = _odp_event_endmark_get_ptr(event);
if (odp_likely(*endmark_ptr == _ODP_EV_ENDMARK_VAL))
return 0;
err_count = odp_atomic_fetch_inc_u64(&_odp_ev_glb->err_count[id]) + 1;
_ODP_ERR("Event %p endmark mismatch in %s: endmark=0x%" PRIx64 " (expected 0x%" PRIx64 ") "
"err_count=%" PRIu64 "\n", event, ev_info_tbl[id].str, *endmark_ptr,
_ODP_EV_ENDMARK_VAL, err_count);
print_event_data(event, type);
if (_ODP_EVENT_VALIDATION == EVENT_VALIDATION_ABORT)
_ODP_ABORT("Abort due to event %p endmark mismatch\n", event);
/* Fix endmark value */
_odp_event_endmark_set(event);
return -1;
}
static inline int buffer_validate(odp_buffer_t buf, _odp_ev_id_t id)
{
return validate_event_endmark(odp_buffer_to_event(buf), id, ODP_EVENT_BUFFER);
}
static inline int packet_validate(odp_packet_t pkt, _odp_ev_id_t id)
{
return validate_event_endmark(odp_packet_to_event(pkt), id, ODP_EVENT_PACKET);
}
static inline int event_validate(odp_event_t event, int id)
{
if (odp_event_type(event) == ODP_EVENT_BUFFER)
return buffer_validate(odp_buffer_from_event(event), id);
if (odp_event_type(event) == ODP_EVENT_PACKET)
return packet_validate(odp_packet_from_event(event), id);
return 0;
}
/* Enable usage from API inline files */
#include <odp/visibility_begin.h>
int _odp_buffer_validate(odp_buffer_t buf, _odp_ev_id_t id)
{
return buffer_validate(buf, id);
}
int _odp_buffer_validate_multi(const odp_buffer_t buf[], int num,
_odp_ev_id_t id)
{
for (int i = 0; i < num; i++) {
if (odp_unlikely(buffer_validate(buf[i], id)))
return -1;
}
return 0;
}
int _odp_packet_validate(odp_packet_t pkt, _odp_ev_id_t id)
{
return packet_validate(pkt, id);
}
int _odp_packet_validate_multi(const odp_packet_t pkt[], int num,
_odp_ev_id_t id)
{
for (int i = 0; i < num; i++) {
if (odp_unlikely(packet_validate(pkt[i], id)))
return -1;
}
return 0;
}
int _odp_event_validate(odp_event_t event, _odp_ev_id_t id)
{
return event_validate(event, id);
}
int _odp_event_validate_multi(const odp_event_t event[], int num,
_odp_ev_id_t id)
{
for (int i = 0; i < num; i++) {
if (odp_unlikely(event_validate(event[i], id)))
return -1;
}
return 0;
}
#include <odp/visibility_end.h>
#endif /* _ODP_EVENT_VALIDATION */
int _odp_event_validation_init_global(void)
{
odp_shm_t shm;
_ODP_PRINT("\nEvent validation mode: %s\n\n",
_ODP_EVENT_VALIDATION == EVENT_VALIDATION_NONE ? "none" :
_ODP_EVENT_VALIDATION == EVENT_VALIDATION_WARN ? "warn" : "abort");
if (_ODP_EVENT_VALIDATION == EVENT_VALIDATION_NONE)
return 0;
shm = odp_shm_reserve("_odp_event_validation_global",
sizeof(event_validation_global_t),
ODP_CACHE_LINE_SIZE, ODP_SHM_EXPORT);
if (shm == ODP_SHM_INVALID)
return -1;
_odp_ev_glb = odp_shm_addr(shm);
if (_odp_ev_glb == NULL)
return -1;
memset(_odp_ev_glb, 0, sizeof(event_validation_global_t));
_odp_ev_glb->shm = shm;
for (int i = 0; i < _ODP_EV_MAX; i++)
odp_atomic_init_u64(&_odp_ev_glb->err_count[i], 0);
return 0;
}
int _odp_event_validation_term_global(void)
{
int ret;
if (_ODP_EVENT_VALIDATION == EVENT_VALIDATION_NONE)
return 0;
if (_odp_ev_glb == NULL)
return 0;
ret = odp_shm_free(_odp_ev_glb->shm);
if (ret) {
_ODP_ERR("SHM free failed: %d\n", ret);
return -1;
}
return 0;
}
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