DPDK  18.11.0-rc3
examples/quota_watermark/qw/init.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
#include <rte_eal.h>
#include <rte_common.h>
#include <rte_errno.h>
#include <rte_ethdev.h>
#include <rte_memzone.h>
#include <rte_ring.h>
#include <rte_string_fns.h>
#include "args.h"
#include "init.h"
#include "main.h"
#include "../include/conf.h"
static struct rte_eth_conf port_conf = {
.rxmode = {
},
.txmode = {
.mq_mode = ETH_DCB_NONE,
},
};
static struct rte_eth_fc_conf fc_conf = {
.high_water = 80 * 510 / 100,
.low_water = 60 * 510 / 100,
.pause_time = 1337,
.send_xon = 0,
};
void configure_eth_port(uint16_t port_id)
{
int ret;
uint16_t nb_rxd = RX_DESC_PER_QUEUE;
uint16_t nb_txd = TX_DESC_PER_QUEUE;
struct rte_eth_rxconf rxq_conf;
struct rte_eth_txconf txq_conf;
struct rte_eth_dev_info dev_info;
struct rte_eth_conf local_port_conf = port_conf;
rte_eth_dev_stop(port_id);
rte_eth_dev_info_get(port_id, &dev_info);
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
local_port_conf.txmode.offloads |=
ret = rte_eth_dev_configure(port_id, 1, 1, &local_port_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Cannot configure port %u (error %d)\n",
(unsigned int) port_id, ret);
ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_id, &nb_rxd, &nb_txd);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Cannot adjust number of descriptors for port %u (error %d)\n",
(unsigned int) port_id, ret);
/* Initialize the port's RX queue */
rxq_conf = dev_info.default_rxconf;
rxq_conf.offloads = local_port_conf.rxmode.offloads;
ret = rte_eth_rx_queue_setup(port_id, 0, nb_rxd,
&rxq_conf,
mbuf_pool);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Failed to setup RX queue on port %u (error %d)\n",
(unsigned int) port_id, ret);
/* Initialize the port's TX queue */
txq_conf = dev_info.default_txconf;
txq_conf.offloads = local_port_conf.txmode.offloads;
ret = rte_eth_tx_queue_setup(port_id, 0, nb_txd,
&txq_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Failed to setup TX queue on port %u (error %d)\n",
(unsigned int) port_id, ret);
/* Initialize the port's flow control */
ret = rte_eth_dev_flow_ctrl_set(port_id, &fc_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Failed to setup hardware flow control on port %u (error %d)\n",
(unsigned int) port_id, ret);
/* Start the port */
ret = rte_eth_dev_start(port_id);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Failed to start port %u (error %d)\n",
(unsigned int) port_id, ret);
/* Put it in promiscuous mode */
}
void
init_dpdk(void)
{
rte_exit(EXIT_FAILURE, "Not enough ethernet port available\n");
}
void init_ring(int lcore_id, uint16_t port_id)
{
struct rte_ring *ring;
char ring_name[RTE_RING_NAMESIZE];
snprintf(ring_name, RTE_RING_NAMESIZE,
"core%d_port%d", lcore_id, port_id);
ring = rte_ring_create(ring_name, RING_SIZE, rte_socket_id(),
if (ring == NULL)
rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
*high_watermark = 80 * RING_SIZE / 100;
rings[lcore_id][port_id] = ring;
}
void
pair_ports(void)
{
uint16_t i, j;
/* Pair ports with their "closest neighbour" in the portmask */
for (i = 0; i < RTE_MAX_ETHPORTS; i++)
if (is_bit_set(i, portmask))
for (j = i + 1; j < RTE_MAX_ETHPORTS; j++)
if (is_bit_set(j, portmask)) {
port_pairs[i] = j;
port_pairs[j] = i;
i = j;
break;
}
}
void
setup_shared_variables(void)
{
const struct rte_memzone *qw_memzone;
qw_memzone = rte_memzone_reserve(QUOTA_WATERMARK_MEMZONE_NAME,
3 * sizeof(int), rte_socket_id(), 0);
if (qw_memzone == NULL)
rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno));
quota = qw_memzone->addr;
low_watermark = (unsigned int *) qw_memzone->addr + 1;
high_watermark = (unsigned int *) qw_memzone->addr + 2;
}