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/* Copyright (c) 2013, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <poll.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <linux/ethtool.h>
#include <linux/sockios.h>
#include <odp/api/cpu.h>
#include <odp/hints.h>
#include <odp/thread.h>
#include <odp/system_info.h>
#include <odp_debug_internal.h>
#include <odp_packet_dpdk.h>
#include <net/if.h>
#include <math.h>
/* Test if s has only digits or not. Dpdk pktio uses only digits.*/
static int _dpdk_netdev_is_valid(const char *s)
{
while (*s) {
if (!isdigit(*s))
return 0;
s++;
}
return 1;
}
static void _dpdk_print_port_mac(uint8_t portid)
{
struct ether_addr eth_addr;
memset(ð_addr, 0, sizeof(eth_addr));
rte_eth_macaddr_get(portid, ð_addr);
ODP_DBG("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n",
(unsigned)portid,
eth_addr.addr_bytes[0],
eth_addr.addr_bytes[1],
eth_addr.addr_bytes[2],
eth_addr.addr_bytes[3],
eth_addr.addr_bytes[4],
eth_addr.addr_bytes[5]);
}
int setup_pkt_dpdk(pkt_dpdk_t * const pkt_dpdk, const char *netdev,
odp_pool_t pool)
{
uint8_t portid = 0;
uint16_t nbrxq, nbtxq;
int ret, i;
pool_entry_t *pool_entry = get_pool_entry(_odp_typeval(pool));
int sid = rte_eth_dev_socket_id(portid);
int socket_id = sid < 0 ? 0 : sid;
uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
struct rte_eth_dev_info dev_info;
struct rte_eth_conf port_conf = {
.rxmode = {
.mq_mode = ETH_MQ_RX_RSS,
.split_hdr_size = 0,
.header_split = 0, /**< Header Split */
.hw_ip_checksum = 0, /**< IP checksum offload */
.hw_vlan_filter = 0, /**< VLAN filtering */
.jumbo_frame = 1, /**< Jumbo Frame Support */
.hw_strip_crc = 0, /**< CRC stripp by hardware */
},
.rx_adv_conf = {
.rss_conf = {
.rss_key = NULL,
.rss_hf = ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP,
},
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
},
};
/* rx packet len same size as pool segment */
port_conf.rxmode.max_rx_pkt_len = pool_entry->s.rte_mempool->elt_size;
if (!_dpdk_netdev_is_valid(netdev))
return -1;
portid = atoi(netdev);
pkt_dpdk->portid = portid;
pkt_dpdk->pool = pool;
pkt_dpdk->queueid = 0;
rte_eth_dev_info_get(portid, &dev_info);
if (!strcmp(dev_info.driver_name, "rte_ixgbe_pmd"))
pkt_dpdk->min_rx_burst = 32;
else
pkt_dpdk->min_rx_burst = 0;
/* On init set it up only to 1 rx and tx queue.*/
nbtxq = nbrxq = 1;
ret = rte_eth_dev_configure(portid, nbrxq, nbtxq, &port_conf);
if (ret < 0) {
ODP_ERR("Cannot configure device: err=%d, port=%u\n",
ret, (unsigned)portid);
return -1;
}
_dpdk_print_port_mac(portid);
if (nb_rxd + nb_txd > pool_entry->s.params.pkt.num / 4) {
double downrate = (double)(pool_entry->s.params.pkt.num / 4) /
(double)(nb_rxd + nb_txd);
nb_rxd >>= (int)ceil(downrate);
nb_txd >>= (int)ceil(downrate);
ODP_DBG("downrate %f\n", downrate);
ODP_DBG("Descriptors scaled down. RX: %u TX: %u pool: %u\n",
nb_rxd, nb_txd, pool_entry->s.params.pkt.num);
}
/* init one RX queue on each port */
for (i = 0; i < nbrxq; i++) {
ret = rte_eth_rx_queue_setup(portid, i, nb_rxd, socket_id,
NULL,
pool_entry->s.rte_mempool);
if (ret < 0) {
ODP_ERR("rxq:err=%d, port=%u\n", ret, (unsigned)portid);
return -1;
}
}
/* init one TX queue on each port */
for (i = 0; i < nbtxq; i++) {
ret = rte_eth_tx_queue_setup(portid, i, nb_txd, socket_id,
NULL);
if (ret < 0) {
ODP_ERR("txq:err=%d, port=%u\n", ret, (unsigned)portid);
return -1;
}
}
/* Start device */
ret = rte_eth_dev_start(portid);
if (ret < 0) {
ODP_ERR("rte_eth_dev_start:err=%d, port=%u\n",
ret, (unsigned)portid);
return -1;
}
rte_eth_promiscuous_enable(portid);
/* Some DPDK PMD vdev like pcap do not support promisc mode change. Use
* system call for them. */
if (!rte_eth_promiscuous_get(portid))
pkt_dpdk->vdev_sysc_promisc = 1;
else
pkt_dpdk->vdev_sysc_promisc = 0;
rte_eth_allmulticast_enable(portid);
return 0;
}
int close_pkt_dpdk(pkt_dpdk_t * const pkt_dpdk)
{
rte_eth_dev_close(pkt_dpdk->portid);
return 0;
}
int recv_pkt_dpdk(pkt_dpdk_t * const pkt_dpdk, odp_packet_t pkt_table[],
unsigned len)
{
uint16_t nb_rx, i = 0;
odp_packet_t *saved_pkt_table;
uint8_t min = pkt_dpdk->min_rx_burst;
if (odp_unlikely(min > len)) {
ODP_DBG("PMD requires >%d buffers burst. "
"Current %d, dropped %d\n", min, len, min - len);
saved_pkt_table = pkt_table;
pkt_table = malloc(min * sizeof(odp_packet_t*));
}
nb_rx = rte_eth_rx_burst((uint8_t)pkt_dpdk->portid,
(uint16_t)pkt_dpdk->queueid,
(struct rte_mbuf **)pkt_table,
(uint16_t)RTE_MAX(len, min));
for (i = 0; i < nb_rx; i++)
_odp_packet_reset_parse(pkt_table[i]);
if (odp_unlikely(min > len)) {
memcpy(saved_pkt_table, pkt_table,
len * sizeof(odp_packet_t));
for (i = len; i < nb_rx; i++)
odp_packet_free(pkt_table[i]);
nb_rx = RTE_MIN(len, nb_rx);
free(pkt_table);
}
return nb_rx;
}
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