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/*
// Copyright (c) 2010-2017 Intel Corporation
//
// 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 _STATS_TASK_H_
#define _STATS_TASK_H_
#include <inttypes.h>
#include "clock.h"
/* The struct task_stats is read/write from the task itself and
read-only from the core that collects the stats. Since only the
task executing the actual work ever modifies the stats, no locking
is required. Both a read and a write are atomic (assuming the
correct alignment). From this, it followed that the statistics can
be incremented directly by the task itself. In cases where these
assumptions do not hold, a possible solution (although slightly
less accurate) would be to keep accumulate statistics temporarily
in a separate structure and periodically copying the statistics to
the statistics core through atomic primitives, for example through
rte_atomic32_set(). The accuracy would be determined by the
frequency at which the statistics are transferred to the statistics
core. */
struct task_rt_stats {
uint32_t rx_pkt_count;
uint32_t tx_pkt_count;
uint32_t drop_tx_fail;
uint32_t drop_discard;
uint32_t drop_handled;
uint32_t idle_cycles;
uint64_t rx_bytes;
uint64_t tx_bytes;
uint64_t drop_bytes;
} __attribute__((packed)) __rte_cache_aligned;
#ifdef PROX_STATS
#define TASK_STATS_ADD_IDLE(stats, cycles) do { \
(stats)->idle_cycles += (cycles) + rdtsc_overhead_stats; \
} while(0) \
#define TASK_STATS_ADD_TX(stats, ntx) do { \
(stats)->tx_pkt_count += ntx; \
} while(0) \
#define TASK_STATS_ADD_DROP_TX_FAIL(stats, ntx) do { \
(stats)->drop_tx_fail += ntx; \
} while(0) \
#define TASK_STATS_ADD_DROP_HANDLED(stats, ntx) do { \
(stats)->drop_handled += ntx; \
} while(0) \
#define TASK_STATS_ADD_DROP_DISCARD(stats, ntx) do { \
(stats)->drop_discard += ntx; \
} while(0) \
#define TASK_STATS_ADD_RX(stats, ntx) do { \
(stats)->rx_pkt_count += ntx; \
} while (0) \
#define TASK_STATS_ADD_RX_BYTES(stats, bytes) do { \
(stats)->rx_bytes += bytes; \
} while (0) \
#define TASK_STATS_ADD_TX_BYTES(stats, bytes) do { \
(stats)->tx_bytes += bytes; \
} while (0) \
#define TASK_STATS_ADD_DROP_BYTES(stats, bytes) do { \
(stats)->drop_bytes += bytes; \
} while (0) \
#define START_EMPTY_MEASSURE() uint64_t cur_tsc = rte_rdtsc();
#else
#define TASK_STATS_ADD_IDLE(stats, cycles) do {} while(0)
#define TASK_STATS_ADD_TX(stats, ntx) do {} while(0)
#define TASK_STATS_ADD_DROP_TX_FAIL(stats, ntx) do {} while(0)
#define TASK_STATS_ADD_DROP_HANDLED(stats, ntx) do {} while(0)
#define TASK_STATS_ADD_DROP_DISCARD(stats, ntx) do {} while(0)
#define TASK_STATS_ADD_RX(stats, ntx) do {} while(0)
#define TASK_STATS_ADD_RX_BYTES(stats, bytes) do {} while(0)
#define TASK_STATS_ADD_TX_BYTES(stats, bytes) do {} while(0)
#define TASK_STATS_ADD_DROP_BYTES(stats, bytes) do {} while(0)
#define START_EMPTY_MEASSURE() do {} while(0)
#endif
struct task_stats_sample {
uint64_t tsc;
uint32_t tx_pkt_count;
uint32_t drop_tx_fail;
uint32_t drop_discard;
uint32_t drop_handled;
uint32_t rx_pkt_count;
uint32_t empty_cycles;
uint64_t rx_bytes;
uint64_t tx_bytes;
uint64_t drop_bytes;
};
struct task_stats {
uint64_t tot_tx_pkt_count;
uint64_t tot_drop_tx_fail;
uint64_t tot_drop_discard;
uint64_t tot_drop_handled;
uint64_t tot_rx_pkt_count;
struct task_stats_sample sample[2];
struct task_rt_stats *stats;
/* flags set if total RX/TX values need to be reported set at
initialization time, only need to access stats values in port */
uint8_t flags;
};
void stats_task_reset(void);
void stats_task_post_proc(void);
void stats_task_update(void);
void stats_task_init(void);
int stats_get_n_tasks_tot(void);
struct task_stats *stats_get_task_stats(uint32_t lcore_id, uint32_t task_id);
struct task_stats_sample *stats_get_task_stats_sample(uint32_t lcore_id, uint32_t task_id, int last);
void stats_task_get_host_rx_tx_packets(uint64_t *rx, uint64_t *tx, uint64_t *tsc);
uint64_t stats_core_task_tot_rx(uint8_t lcore_id, uint8_t task_id);
uint64_t stats_core_task_tot_tx(uint8_t lcore_id, uint8_t task_id);
uint64_t stats_core_task_tot_drop(uint8_t lcore_id, uint8_t task_id);
uint64_t stats_core_task_last_tsc(uint8_t lcore_id, uint8_t task_id);
#endif /* _STATS_TASK_H_ */
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