DPDK  18.05.1
examples/ip_pipeline/link.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2018 Intel Corporation
*/
#include <stdlib.h>
#include <string.h>
#include <rte_ethdev.h>
#include <rte_string_fns.h>
#include "link.h"
#include "mempool.h"
static struct link_list link_list;
int
link_init(void)
{
TAILQ_INIT(&link_list);
return 0;
}
struct link *
link_find(const char *name)
{
struct link *link;
if (name == NULL)
return NULL;
TAILQ_FOREACH(link, &link_list, node)
if (strcmp(link->name, name) == 0)
return link;
return NULL;
}
static struct rte_eth_conf port_conf_default = {
.rxmode = {
.mq_mode = ETH_MQ_RX_NONE,
.header_split = 0, /* Header split */
.hw_ip_checksum = 0, /* IP checksum offload */
.hw_vlan_filter = 0, /* VLAN filtering */
.hw_vlan_strip = 0, /* VLAN strip */
.hw_vlan_extend = 0, /* Extended VLAN */
.jumbo_frame = 0, /* Jumbo frame support */
.hw_strip_crc = 1, /* CRC strip by HW */
.enable_scatter = 0, /* Scattered packets RX handler */
.max_rx_pkt_len = 9000, /* Jumbo frame max packet len */
.split_hdr_size = 0, /* Header split buffer size */
},
.rx_adv_conf = {
.rss_conf = {
.rss_key = NULL,
.rss_key_len = 40,
.rss_hf = 0,
},
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
},
.lpbk_mode = 0,
};
#define RETA_CONF_SIZE (ETH_RSS_RETA_SIZE_512 / RTE_RETA_GROUP_SIZE)
static int
rss_setup(uint16_t port_id,
uint16_t reta_size,
struct link_params_rss *rss)
{
struct rte_eth_rss_reta_entry64 reta_conf[RETA_CONF_SIZE];
uint32_t i;
int status;
/* RETA setting */
memset(reta_conf, 0, sizeof(reta_conf));
for (i = 0; i < reta_size; i++)
reta_conf[i / RTE_RETA_GROUP_SIZE].mask = UINT64_MAX;
for (i = 0; i < reta_size; i++) {
uint32_t reta_id = i / RTE_RETA_GROUP_SIZE;
uint32_t reta_pos = i % RTE_RETA_GROUP_SIZE;
uint32_t rss_qs_pos = i % rss->n_queues;
reta_conf[reta_id].reta[reta_pos] =
(uint16_t) rss->queue_id[rss_qs_pos];
}
/* RETA update */
status = rte_eth_dev_rss_reta_update(port_id,
reta_conf,
reta_size);
return status;
}
struct link *
link_create(const char *name, struct link_params *params)
{
struct rte_eth_dev_info port_info;
struct rte_eth_conf port_conf;
struct link *link;
struct link_params_rss *rss;
struct mempool *mempool;
uint32_t cpu_id, i;
int status;
uint16_t port_id;
/* Check input params */
if ((name == NULL) ||
link_find(name) ||
(params == NULL) ||
(params->rx.n_queues == 0) ||
(params->rx.queue_size == 0) ||
(params->tx.n_queues == 0) ||
(params->tx.queue_size == 0))
return NULL;
port_id = params->port_id;
if (params->dev_name) {
status = rte_eth_dev_get_port_by_name(params->dev_name,
&port_id);
if (status)
return NULL;
} else
return NULL;
rte_eth_dev_info_get(port_id, &port_info);
mempool = mempool_find(params->rx.mempool_name);
if (mempool == NULL)
return NULL;
rss = params->rx.rss;
if (rss) {
if ((port_info.reta_size == 0) ||
(port_info.reta_size > ETH_RSS_RETA_SIZE_512))
return NULL;
if ((rss->n_queues == 0) ||
(rss->n_queues >= LINK_RXQ_RSS_MAX))
return NULL;
for (i = 0; i < rss->n_queues; i++)
if (rss->queue_id[i] >= port_info.max_rx_queues)
return NULL;
}
/* Port */
memcpy(&port_conf, &port_conf_default, sizeof(port_conf));
if (rss) {
port_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
port_conf.rx_adv_conf.rss_conf.rss_hf =
ETH_RSS_IPV4 | ETH_RSS_IPV6;
}
cpu_id = (uint32_t) rte_eth_dev_socket_id(port_id);
if (cpu_id == (uint32_t) SOCKET_ID_ANY)
cpu_id = 0;
port_id,
params->rx.n_queues,
params->tx.n_queues,
&port_conf);
if (status < 0)
return NULL;
if (params->promiscuous)
/* Port RX */
for (i = 0; i < params->rx.n_queues; i++) {
port_id,
i,
params->rx.queue_size,
cpu_id,
NULL,
mempool->m);
if (status < 0)
return NULL;
}
/* Port TX */
for (i = 0; i < params->tx.n_queues; i++) {
port_id,
i,
params->tx.queue_size,
cpu_id,
NULL);
if (status < 0)
return NULL;
}
/* Port start */
status = rte_eth_dev_start(port_id);
if (status < 0)
return NULL;
if (rss) {
status = rss_setup(port_id, port_info.reta_size, rss);
if (status) {
rte_eth_dev_stop(port_id);
return NULL;
}
}
/* Port link up */
status = rte_eth_dev_set_link_up(port_id);
if ((status < 0) && (status != -ENOTSUP)) {
rte_eth_dev_stop(port_id);
return NULL;
}
/* Node allocation */
link = calloc(1, sizeof(struct link));
if (link == NULL) {
rte_eth_dev_stop(port_id);
return NULL;
}
/* Node fill in */
strlcpy(link->name, name, sizeof(link->name));
link->port_id = port_id;
link->n_rxq = params->rx.n_queues;
link->n_txq = params->tx.n_queues;
/* Node add to list */
TAILQ_INSERT_TAIL(&link_list, link, node);
return link;
}
int
link_is_up(const char *name)
{
struct rte_eth_link link_params;
struct link *link;
/* Check input params */
if (name == NULL)
return 0;
link = link_find(name);
if (link == NULL)
return 0;
/* Resource */
rte_eth_link_get(link->port_id, &link_params);
return (link_params.link_status == ETH_LINK_DOWN) ? 0 : 1;
}