278 lines
10 KiB
C++
278 lines
10 KiB
C++
|
|
#include <rte_eal.h>
|
|
#include <rte_lcore.h>
|
|
|
|
#include <stdexcept>
|
|
|
|
#include "Configurator.hpp"
|
|
#include "Definitions.hpp"
|
|
|
|
#include "Initializer.hpp"
|
|
|
|
rte_mempool* Initializer::init_dpdk(int argc, char** argv,
|
|
uint16_t& nb_worker_threads) {
|
|
|
|
uint8_t hash_key[RSS_HASH_KEY_LENGTH] = {
|
|
0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A,
|
|
0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A,
|
|
0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A,
|
|
0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A, 0x6D, 0x5A,
|
|
};
|
|
|
|
rte_eth_conf port_conf = {
|
|
.rxmode =
|
|
{
|
|
.mq_mode = ETH_MQ_RX_RSS,
|
|
.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
|
|
.offloads =
|
|
DEV_RX_OFFLOAD_CHECKSUM
|
|
},
|
|
.txmode =
|
|
{
|
|
.offloads =
|
|
(DEV_TX_OFFLOAD_IPV4_CKSUM | DEV_TX_OFFLOAD_UDP_CKSUM |
|
|
DEV_TX_OFFLOAD_TCP_CKSUM),
|
|
},
|
|
.rx_adv_conf = {.rss_conf =
|
|
{
|
|
.rss_key = hash_key,
|
|
.rss_key_len = RSS_HASH_KEY_LENGTH,
|
|
.rss_hf =
|
|
ETH_RSS_IP | ETH_RSS_TCP | ETH_RSS_UDP,
|
|
}},
|
|
};
|
|
|
|
return init_dpdk_template(NUM_NON_WORKER_THREADS, port_conf, argc, argv,
|
|
nb_worker_threads);
|
|
}
|
|
|
|
rte_mempool* Initializer::init_dpdk_attacker(int argc, char** argv,
|
|
uint16_t& nb_worker_threads) {
|
|
rte_eth_conf port_conf = {
|
|
.rxmode =
|
|
{
|
|
.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
|
|
},
|
|
.txmode =
|
|
{
|
|
.offloads =
|
|
(DEV_TX_OFFLOAD_IPV4_CKSUM | DEV_TX_OFFLOAD_UDP_CKSUM |
|
|
DEV_TX_OFFLOAD_TCP_CKSUM),
|
|
},
|
|
};
|
|
|
|
return init_dpdk_template(0, port_conf, argc, argv, nb_worker_threads);
|
|
}
|
|
|
|
rte_mempool* Initializer::init_dpdk_template(uint16_t nb_non_worker_threads,
|
|
rte_eth_conf port_conf, int argc,
|
|
char** argv,
|
|
uint16_t& nb_worker_threads) {
|
|
int ret;
|
|
unsigned int nb_ports;
|
|
uint16_t portid; //< init portid
|
|
struct rte_mempool* mbuf_pool;
|
|
|
|
// initialize eal
|
|
ret = rte_eal_init(argc, argv);
|
|
if (ret < 0) {
|
|
rte_exit(EXIT_FAILURE, "Cannot init EAL\n");
|
|
}
|
|
|
|
// initialize number of worker threads
|
|
init_number_threads(nb_non_worker_threads, nb_worker_threads);
|
|
|
|
// Check that there is an even number of ports to send/receive on.
|
|
nb_ports = rte_eth_dev_count_avail();
|
|
if (nb_ports < 2 || (nb_ports & 1)) {
|
|
rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
|
|
}
|
|
|
|
// Creates a new mempool in memory to hold the mbufs.
|
|
|
|
// This argument must be lower or equal to RTE_MEMPOOL_CACHE_MAX_SIZE (=
|
|
// 512)
|
|
// and n / 1.5. It is advised to choose cache_size to have "n modulo
|
|
// cache_size
|
|
// == 0". size from basicfwd program in dpdk examples: 250
|
|
unsigned cache_size = RTE_MEMPOOL_CACHE_MAX_SIZE;
|
|
if (cache_size > NUM_MBUF_POOL_ELEMENTS / 1.5) {
|
|
cache_size = unsigned(NUM_MBUF_POOL_ELEMENTS / 1.5);
|
|
}
|
|
|
|
while (NUM_MBUF_POOL_ELEMENTS % cache_size != 0 || cache_size == 0) {
|
|
cache_size -= 1;
|
|
}
|
|
|
|
mbuf_pool = rte_pktmbuf_pool_create(
|
|
"MBUF_POOL", NUM_MBUF_POOL_ELEMENTS, 0 /*cache_size*/, 0,
|
|
RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
|
|
|
|
if (mbuf_pool == nullptr) {
|
|
rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
|
|
}
|
|
|
|
// Initialize all ports.
|
|
RTE_ETH_FOREACH_DEV(portid) {
|
|
try {
|
|
init_port(port_conf, portid, mbuf_pool, nb_worker_threads);
|
|
}
|
|
catch (std::exception& e) {
|
|
rte_exit(EXIT_FAILURE, "Cannot init port %" PRIu16 "\n", portid);
|
|
}
|
|
}
|
|
|
|
return mbuf_pool;
|
|
}
|
|
|
|
void Initializer::init_port(rte_eth_conf port_conf, uint16_t port,
|
|
struct rte_mempool* mbuf_pool,
|
|
uint16_t nb_worker_threads) {
|
|
// the "port" is a port_id which is fetched in the main-function by the
|
|
// Makro RTE_ETH_FOREACH_DEV The mbuf_pool is needed for queue
|
|
// initialization
|
|
|
|
const uint16_t rx_rings =
|
|
nb_worker_threads; // rte_lcore_count() many worker threads with an
|
|
// rx queue on each port
|
|
const uint16_t tx_rings = rx_rings; // number of rx and tx queues
|
|
uint16_t nb_rxd = RX_RING_SIZE; // size of queues
|
|
uint16_t nb_txd = TX_RING_SIZE;
|
|
int retval; // return value for later procedure calls
|
|
uint16_t q; // counting variable used for for loop
|
|
struct rte_eth_dev_info
|
|
dev_info; // information about NIC, on which pci_slot...
|
|
struct rte_eth_txconf txconf; // filled later with default value of NIC
|
|
|
|
// test if port exists
|
|
if (!rte_eth_dev_is_valid_port(port))
|
|
throw std::exception();
|
|
|
|
// fill def_info with data
|
|
rte_eth_dev_info_get(port, &dev_info);
|
|
// test if queue has offload capacity; if MBUF offload is possible
|
|
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
|
|
// |= is not allowed operator. negation of DEV_TX_OFFL...
|
|
port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;
|
|
// test if checksum offloading is possible
|
|
if (((dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_CKSUM) == DEV_TX_OFFLOAD_TCP_CKSUM) &&
|
|
((dev_info.tx_offload_capa & DEV_TX_OFFLOAD_IPV4_CKSUM) == DEV_TX_OFFLOAD_IPV4_CKSUM) ){
|
|
std::cout << "ethernet device is checksum offloading capabel" << std::endl;
|
|
} else {
|
|
std::cout << "ethernet device is not checksum offloading capabel" << std::endl;
|
|
}
|
|
if (((dev_info.tx_queue_offload_capa & DEV_TX_OFFLOAD_IPV4_CKSUM) == DEV_TX_OFFLOAD_IPV4_CKSUM) &&
|
|
((dev_info.tx_queue_offload_capa & DEV_TX_OFFLOAD_TCP_CKSUM) == DEV_TX_OFFLOAD_TCP_CKSUM)) {
|
|
std::cout << "queue is checksum offloading capabel" << std::endl;
|
|
} else {
|
|
std::cout << "queue is not checksum offloading capabel" << std::endl;
|
|
}
|
|
|
|
// Configure the Ethernet device.
|
|
// address NIC; assign queues; 1 queue per port
|
|
retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
|
|
if (retval != 0)
|
|
throw std::exception();
|
|
|
|
retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
|
|
if (retval != 0)
|
|
throw std::exception();
|
|
|
|
// Allocate and set up RX queues per Ethernet port.
|
|
for (q = 0; q < rx_rings; q++) {
|
|
retval = rte_eth_rx_queue_setup(
|
|
port, q, nb_rxd, rte_eth_dev_socket_id(port), NULL, mbuf_pool);
|
|
if (retval < 0)
|
|
throw std::exception();
|
|
}
|
|
|
|
// initializes tx config for passing it to the queue setup
|
|
txconf = dev_info.default_txconf;
|
|
txconf.offloads = port_conf.txmode.offloads;
|
|
// Allocate and set up 1 TX queue per Ethernet port.
|
|
for (q = 0; q < tx_rings; q++) {
|
|
retval = rte_eth_tx_queue_setup(port, q, nb_txd,
|
|
rte_eth_dev_socket_id(port), &txconf);
|
|
if (retval < 0)
|
|
throw std::exception();
|
|
}
|
|
|
|
// Start the Ethernet port.
|
|
retval = rte_eth_dev_start(port);
|
|
if (retval < 0)
|
|
throw std::exception();
|
|
|
|
// Display the port MAC address.
|
|
struct rte_ether_addr addr;
|
|
rte_eth_macaddr_get(port, &addr);
|
|
printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8 " %02" PRIx8
|
|
" %02" PRIx8 " %02" PRIx8 "\n",
|
|
port, addr.addr_bytes[0], addr.addr_bytes[1], addr.addr_bytes[2],
|
|
addr.addr_bytes[3], addr.addr_bytes[4], addr.addr_bytes[5]);
|
|
|
|
// Enable RX in promiscuous mode for the Ethernet device.
|
|
// TODO: do we need it
|
|
rte_eth_promiscuous_enable(port);
|
|
}
|
|
|
|
void Initializer::init_number_threads(uint16_t nb_non_worker_threads,
|
|
uint16_t& nb_worker_threads) {
|
|
// calculate default value of worker threads
|
|
uint16_t nb_worker_threads_default =
|
|
rte_lcore_count() - nb_non_worker_threads;
|
|
|
|
// check if value exists or if it has to be calculated
|
|
if (Configurator::instance()->entry_exists("number_of_worker_threads")) {
|
|
std::string nb = Configurator::instance()->get_config_as_string(
|
|
"number_of_worker_threads");
|
|
|
|
uint16_t nb_int = 0;
|
|
|
|
try { /* value is convertable to an integer */
|
|
nb_int = std::stoi(nb);
|
|
} catch (
|
|
std::exception& e) { /* value is not convertable to an integer */
|
|
throw std::runtime_error(
|
|
"The given value at key 'number_of_worker_threads' in "
|
|
"config.json is not "
|
|
"convertable to an integer value. Set "
|
|
"number_of_worker_threads "
|
|
"either to 'default' or to a value less or equal than " +
|
|
std::to_string(nb_worker_threads_default) +
|
|
" and bigger than 0.");
|
|
}
|
|
|
|
if (nb_int > nb_worker_threads_default) {
|
|
throw std::runtime_error(
|
|
"The given value at key 'number_of_worker_threads' in "
|
|
"config.json is out of bounds. Set "
|
|
"number_of_worker_threads "
|
|
"either to 'default' or to a value smaller or equal than " +
|
|
std::to_string(nb_worker_threads_default) +
|
|
" and bigger than 0.");
|
|
} else if (nb_int <= 0) {
|
|
throw std::runtime_error(
|
|
"The given value at key 'number_of_worker_threads' in "
|
|
"config.json is out of bounds. "
|
|
"Either "
|
|
"set number_of_worker_threads "
|
|
"to 'default' or set it to a value less or equal than " +
|
|
std::to_string(nb_worker_threads_default) +
|
|
" and greater than 0.");
|
|
}
|
|
|
|
nb_worker_threads = nb_int;
|
|
|
|
LOG_INFO << "Value " << nb_int
|
|
<< " for number_of_worker_threads found in config.json. Using "
|
|
<< nb_int << " worker threads and " << nb_non_worker_threads
|
|
<< " non worker thread." << LOG_END;
|
|
} else {
|
|
nb_worker_threads = nb_worker_threads_default;
|
|
LOG_INFO << "No value for number_of_worker_threads found in "
|
|
"config_attacker.json. Using "
|
|
<< nb_worker_threads << " worker threads and "
|
|
<< nb_non_worker_threads << " non worker thread." << LOG_END;
|
|
}
|
|
}
|