DPDK  20.11.3
examples/l2fwd-event/l2fwd_event.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(C) 2019 Marvell International Ltd.
*/
#include <stdbool.h>
#include <getopt.h>
#include <rte_atomic.h>
#include <rte_cycles.h>
#include <rte_ethdev.h>
#include <rte_eventdev.h>
#include <rte_lcore.h>
#include <rte_malloc.h>
#include <rte_spinlock.h>
#include "l2fwd_event.h"
#define L2FWD_EVENT_SINGLE 0x1
#define L2FWD_EVENT_BURST 0x2
#define L2FWD_EVENT_TX_DIRECT 0x4
#define L2FWD_EVENT_TX_ENQ 0x8
#define L2FWD_EVENT_UPDT_MAC 0x10
static inline int
l2fwd_event_service_enable(uint32_t service_id)
{
uint8_t min_service_count = UINT8_MAX;
uint32_t slcore_array[RTE_MAX_LCORE];
unsigned int slcore = 0;
uint8_t service_count;
int32_t slcore_count;
return -ENOENT;
slcore_count = rte_service_lcore_list(slcore_array, RTE_MAX_LCORE);
if (slcore_count < 0)
return -ENOENT;
/* Get the core which has least number of services running. */
while (slcore_count--) {
/* Reset default mapping */
if (rte_service_map_lcore_set(service_id,
slcore_array[slcore_count], 0) != 0)
return -ENOENT;
slcore_array[slcore_count]);
if (service_count < min_service_count) {
slcore = slcore_array[slcore_count];
min_service_count = service_count;
}
}
if (rte_service_map_lcore_set(service_id, slcore, 1) != 0)
return -ENOENT;
return 0;
}
void
l2fwd_event_service_setup(struct l2fwd_resources *rsrc)
{
struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
struct rte_event_dev_info evdev_info;
uint32_t service_id, caps;
int ret, i;
rte_event_dev_info_get(evt_rsrc->event_d_id, &evdev_info);
ret = rte_event_dev_service_id_get(evt_rsrc->event_d_id,
&service_id);
if (ret != -ESRCH && ret != 0)
rte_panic("Error in starting eventdev service\n");
l2fwd_event_service_enable(service_id);
}
for (i = 0; i < evt_rsrc->rx_adptr.nb_rx_adptr; i++) {
ret = rte_event_eth_rx_adapter_caps_get(evt_rsrc->event_d_id,
evt_rsrc->rx_adptr.rx_adptr[i], &caps);
if (ret < 0)
rte_panic("Failed to get Rx adapter[%d] caps\n",
evt_rsrc->rx_adptr.rx_adptr[i]);
evt_rsrc->event_d_id,
&service_id);
if (ret != -ESRCH && ret != 0)
rte_panic("Error in starting Rx adapter[%d] service\n",
evt_rsrc->rx_adptr.rx_adptr[i]);
l2fwd_event_service_enable(service_id);
}
for (i = 0; i < evt_rsrc->tx_adptr.nb_tx_adptr; i++) {
ret = rte_event_eth_tx_adapter_caps_get(evt_rsrc->event_d_id,
evt_rsrc->tx_adptr.tx_adptr[i], &caps);
if (ret < 0)
rte_panic("Failed to get Rx adapter[%d] caps\n",
evt_rsrc->tx_adptr.tx_adptr[i]);
evt_rsrc->event_d_id,
&service_id);
if (ret != -ESRCH && ret != 0)
rte_panic("Error in starting Rx adapter[%d] service\n",
evt_rsrc->tx_adptr.tx_adptr[i]);
l2fwd_event_service_enable(service_id);
}
}
static void
l2fwd_event_capability_setup(struct l2fwd_event_resources *evt_rsrc)
{
uint32_t caps = 0;
uint16_t i;
int ret;
if (ret)
rte_panic("Invalid capability for Tx adptr port %d\n",
i);
evt_rsrc->tx_mode_q |= !(caps &
}
if (evt_rsrc->tx_mode_q)
l2fwd_event_set_generic_ops(&evt_rsrc->ops);
else
l2fwd_event_set_internal_port_ops(&evt_rsrc->ops);
}
static __rte_noinline int
l2fwd_get_free_event_port(struct l2fwd_event_resources *evt_rsrc)
{
static int index;
int port_id;
rte_spinlock_lock(&evt_rsrc->evp.lock);
if (index >= evt_rsrc->evp.nb_ports) {
printf("No free event port is available\n");
return -1;
}
port_id = evt_rsrc->evp.event_p_id[index];
index++;
rte_spinlock_unlock(&evt_rsrc->evp.lock);
return port_id;
}
l2fwd_event_fwd(struct l2fwd_resources *rsrc, struct rte_event *ev,
const uint8_t tx_q_id, const uint64_t timer_period,
const uint32_t flags)
{
struct rte_mbuf *mbuf = ev->mbuf;
uint16_t dst_port;
dst_port = rsrc->dst_ports[mbuf->port];
if (timer_period > 0)
__atomic_fetch_add(&rsrc->port_stats[mbuf->port].rx,
1, __ATOMIC_RELAXED);
mbuf->port = dst_port;
if (flags & L2FWD_EVENT_UPDT_MAC)
l2fwd_mac_updating(mbuf, dst_port, &rsrc->eth_addr[dst_port]);
if (flags & L2FWD_EVENT_TX_ENQ) {
ev->queue_id = tx_q_id;
}
if (flags & L2FWD_EVENT_TX_DIRECT)
if (timer_period > 0)
__atomic_fetch_add(&rsrc->port_stats[mbuf->port].tx,
1, __ATOMIC_RELAXED);
}
l2fwd_event_loop_single(struct l2fwd_resources *rsrc,
const uint32_t flags)
{
struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
const int port_id = l2fwd_get_free_event_port(evt_rsrc);
const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
evt_rsrc->evq.nb_queues - 1];
const uint64_t timer_period = rsrc->timer_period;
const uint8_t event_d_id = evt_rsrc->event_d_id;
struct rte_event ev;
if (port_id < 0)
return;
printf("%s(): entering eventdev main loop on lcore %u\n", __func__,
while (!rsrc->force_quit) {
/* Read packet from eventdev */
if (!rte_event_dequeue_burst(event_d_id, port_id, &ev, 1, 0))
continue;
l2fwd_event_fwd(rsrc, &ev, tx_q_id, timer_period, flags);
if (flags & L2FWD_EVENT_TX_ENQ) {
while (rte_event_enqueue_burst(event_d_id, port_id,
&ev, 1) &&
!rsrc->force_quit)
;
}
if (flags & L2FWD_EVENT_TX_DIRECT) {
port_id,
&ev, 1, 0) &&
!rsrc->force_quit)
;
}
}
}
l2fwd_event_loop_burst(struct l2fwd_resources *rsrc,
const uint32_t flags)
{
struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
const int port_id = l2fwd_get_free_event_port(evt_rsrc);
const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
evt_rsrc->evq.nb_queues - 1];
const uint64_t timer_period = rsrc->timer_period;
const uint8_t event_d_id = evt_rsrc->event_d_id;
const uint8_t deq_len = evt_rsrc->deq_depth;
struct rte_event ev[MAX_PKT_BURST];
uint16_t nb_rx, nb_tx;
uint8_t i;
if (port_id < 0)
return;
printf("%s(): entering eventdev main loop on lcore %u\n", __func__,
while (!rsrc->force_quit) {
/* Read packet from eventdev */
nb_rx = rte_event_dequeue_burst(event_d_id, port_id, ev,
deq_len, 0);
if (nb_rx == 0)
continue;
for (i = 0; i < nb_rx; i++) {
l2fwd_event_fwd(rsrc, &ev[i], tx_q_id, timer_period,
flags);
}
if (flags & L2FWD_EVENT_TX_ENQ) {
nb_tx = rte_event_enqueue_burst(event_d_id, port_id,
ev, nb_rx);
while (nb_tx < nb_rx && !rsrc->force_quit)
nb_tx += rte_event_enqueue_burst(event_d_id,
port_id, ev + nb_tx,
nb_rx - nb_tx);
}
if (flags & L2FWD_EVENT_TX_DIRECT) {
port_id, ev,
nb_rx, 0);
while (nb_tx < nb_rx && !rsrc->force_quit)
event_d_id, port_id,
ev + nb_tx, nb_rx - nb_tx, 0);
}
}
}
l2fwd_event_loop(struct l2fwd_resources *rsrc,
const uint32_t flags)
{
if (flags & L2FWD_EVENT_SINGLE)
l2fwd_event_loop_single(rsrc, flags);
if (flags & L2FWD_EVENT_BURST)
l2fwd_event_loop_burst(rsrc, flags);
}
static void __rte_noinline
l2fwd_event_main_loop_tx_d(struct l2fwd_resources *rsrc)
{
l2fwd_event_loop(rsrc,
L2FWD_EVENT_TX_DIRECT | L2FWD_EVENT_SINGLE);
}
static void __rte_noinline
l2fwd_event_main_loop_tx_d_brst(struct l2fwd_resources *rsrc)
{
l2fwd_event_loop(rsrc, L2FWD_EVENT_TX_DIRECT | L2FWD_EVENT_BURST);
}
static void __rte_noinline
l2fwd_event_main_loop_tx_q(struct l2fwd_resources *rsrc)
{
l2fwd_event_loop(rsrc, L2FWD_EVENT_TX_ENQ | L2FWD_EVENT_SINGLE);
}
static void __rte_noinline
l2fwd_event_main_loop_tx_q_brst(struct l2fwd_resources *rsrc)
{
l2fwd_event_loop(rsrc, L2FWD_EVENT_TX_ENQ | L2FWD_EVENT_BURST);
}
static void __rte_noinline
l2fwd_event_main_loop_tx_d_mac(struct l2fwd_resources *rsrc)
{
l2fwd_event_loop(rsrc, L2FWD_EVENT_UPDT_MAC |
L2FWD_EVENT_TX_DIRECT | L2FWD_EVENT_SINGLE);
}
static void __rte_noinline
l2fwd_event_main_loop_tx_d_brst_mac(struct l2fwd_resources *rsrc)
{
l2fwd_event_loop(rsrc, L2FWD_EVENT_UPDT_MAC |
L2FWD_EVENT_TX_DIRECT | L2FWD_EVENT_BURST);
}
static void __rte_noinline
l2fwd_event_main_loop_tx_q_mac(struct l2fwd_resources *rsrc)
{
l2fwd_event_loop(rsrc, L2FWD_EVENT_UPDT_MAC |
L2FWD_EVENT_TX_ENQ | L2FWD_EVENT_SINGLE);
}
static void __rte_noinline
l2fwd_event_main_loop_tx_q_brst_mac(struct l2fwd_resources *rsrc)
{
l2fwd_event_loop(rsrc, L2FWD_EVENT_UPDT_MAC |
L2FWD_EVENT_TX_ENQ | L2FWD_EVENT_BURST);
}
void
l2fwd_event_resource_setup(struct l2fwd_resources *rsrc)
{
/* [MAC_UPDT][TX_MODE][BURST] */
const event_loop_cb event_loop[2][2][2] = {
[0][0][0] = l2fwd_event_main_loop_tx_d,
[0][0][1] = l2fwd_event_main_loop_tx_d_brst,
[0][1][0] = l2fwd_event_main_loop_tx_q,
[0][1][1] = l2fwd_event_main_loop_tx_q_brst,
[1][0][0] = l2fwd_event_main_loop_tx_d_mac,
[1][0][1] = l2fwd_event_main_loop_tx_d_brst_mac,
[1][1][0] = l2fwd_event_main_loop_tx_q_mac,
[1][1][1] = l2fwd_event_main_loop_tx_q_brst_mac,
};
struct l2fwd_event_resources *evt_rsrc;
uint32_t event_queue_cfg;
int ret;
rte_panic("No Eventdev found\n");
evt_rsrc = rte_zmalloc("l2fwd_event",
sizeof(struct l2fwd_event_resources), 0);
if (evt_rsrc == NULL)
rte_panic("Failed to allocate memory\n");
rsrc->evt_rsrc = evt_rsrc;
/* Setup eventdev capability callbacks */
l2fwd_event_capability_setup(evt_rsrc);
/* Event device configuration */
event_queue_cfg = evt_rsrc->ops.event_device_setup(rsrc);
/* Event queue configuration */
evt_rsrc->ops.event_queue_setup(rsrc, event_queue_cfg);
/* Event port configuration */
evt_rsrc->ops.event_port_setup(rsrc);
/* Rx/Tx adapters configuration */
evt_rsrc->ops.adapter_setup(rsrc);
/* Start event device */
ret = rte_event_dev_start(evt_rsrc->event_d_id);
if (ret < 0)
rte_panic("Error in starting eventdev\n");
evt_rsrc->ops.l2fwd_event_loop = event_loop
[rsrc->mac_updating]
[evt_rsrc->tx_mode_q]
[evt_rsrc->has_burst];
}