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add examples

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This commit is contained in:
Robert Jeutter 2021-10-24 13:19:14 +02:00
parent 9e966c8e05
commit de2cfbde73
10 changed files with 738 additions and 0 deletions
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164
examples/basicfwd/main.c Normal file
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2015 Intel Corporation
*/
#include <inttypes.h>
#include <rte_cycles.h>
#include <rte_eal.h>
#include <rte_ethdev.h>
#include <rte_lcore.h>
#include <rte_mbuf.h>
#include <stdint.h>
#define RX_RING_SIZE 1024
#define TX_RING_SIZE 1024
#define NUM_MBUFS 8191
#define MBUF_CACHE_SIZE 250
#define BURST_SIZE 32
static const struct rte_eth_conf port_conf_default = {
.rxmode =
{
.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
},
};
/* basicfwd.c: Basic DPDK skeleton forwarding example. */
/*
* Initializes a given port using global settings and with the RX buffers
* coming from the mbuf_pool passed as a parameter.
*/
static inline int port_init(uint16_t port, struct rte_mempool* mbuf_pool) {
struct rte_eth_conf port_conf = port_conf_default;
const uint16_t rx_rings = 1, tx_rings = 1;
uint16_t nb_rxd = RX_RING_SIZE;
uint16_t nb_txd = TX_RING_SIZE;
int retval;
uint16_t q;
struct rte_eth_dev_info dev_info;
struct rte_eth_txconf txconf;
if (!rte_eth_dev_is_valid_port(port))
return -1;
retval = rte_eth_dev_info_get(port, &dev_info);
if (retval != 0) {
printf("Error during getting device (port %u) info: %s\n", port,
strerror(-retval));
return retval;
}
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;
/* Configure the Ethernet device. */
retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
if (retval != 0)
return retval;
retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
if (retval != 0)
return retval;
/* Allocate and set up 1 RX queue 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)
return retval;
}
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)
return retval;
}
/* Start the Ethernet port. */
retval = rte_eth_dev_start(port);
if (retval < 0)
return retval;
/* Display the port MAC address. */
struct rte_ether_addr addr;
retval = rte_eth_macaddr_get(port, &addr);
if (retval != 0)
return retval;
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. */
retval = rte_eth_promiscuous_enable(port);
if (retval != 0)
return retval;
return 0;
}
/*
* The lcore main. This is the main thread that does the work, reading from
* an input port and writing to an output port.
*/
static __rte_noreturn void lcore_main(void) {
uint16_t port;
/*
* Check that the port is on the same NUMA node as the polling thread
* for best performance.
*/
RTE_ETH_FOREACH_DEV(port)
if (rte_eth_dev_socket_id(port) >= 0 &&
rte_eth_dev_socket_id(port) != (int)rte_socket_id())
printf("WARNING, port %u is on remote NUMA node to "
"polling thread.\n\tPerformance will "
"not be optimal.\n",
port);
printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n", rte_lcore_id());
/* Run until the application is quit or killed. */
for (;;) {
/*
* Receive packets on a port and forward them on the paired
* port. The mapping is 0 -> 1, 1 -> 0, 2 -> 3, 3 -> 2, etc.
*/
RTE_ETH_FOREACH_DEV(port) {
/* Get burst of RX packets, from first port of pair. */
struct rte_mbuf* bufs[BURST_SIZE];
const uint16_t nb_rx = rte_eth_rx_burst(port, 0, bufs, BURST_SIZE);
if (unlikely(nb_rx == 0))
continue;
/* Send burst of TX packets, to second port of pair. */
const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0, bufs, nb_rx);
/* Free any unsent packets. */
if (unlikely(nb_tx < nb_rx)) {
uint16_t buf;
for (buf = nb_tx; buf < nb_rx; buf++)
rte_pktmbuf_free(bufs[buf]);
}
}
}
}
/*
* The main function, which does initialization and calls the per-lcore
* functions.
*/
int main(int argc, char* argv[]) {
struct rte_mempool* mbuf_pool;
unsigned nb_ports;
uint16_t portid;
/* Initialize the Environment Abstraction Layer (EAL). */
int ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
argc -= ret;
argv += ret;
/* 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. */
mbuf_pool = rte_pktmbuf_pool_create(
"MBUF_POOL", NUM_MBUFS * nb_ports, MBUF_CACHE_SIZE, 0,
RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
/* Initialize all ports. */
RTE_ETH_FOREACH_DEV(portid)
if (port_init(portid, mbuf_pool) != 0)
rte_exit(EXIT_FAILURE, "Cannot init port %" PRIu16 "\n", portid);
if (rte_lcore_count() > 1)
printf("\nWARNING: Too many lcores enabled. Only 1 used.\n");
/* Call lcore_main on the main core only. */
lcore_main();
/* clean up the EAL */
rte_eal_cleanup();
return 0;
}

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project('dpdk-app', 'c')
dpdk = dependency('libdpdk')
sources = files('main.c')
executable('dpdk-app', sources, dependencies: dpdk)

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <errno.h>
#include <rte_debug.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_lcore.h>
#include <rte_memory.h>
#include <rte_per_lcore.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/queue.h>
#include <rte_cycles.h>
static int lcore_hello(__rte_unused void *arg) {
unsigned lcore_id;
lcore_id = rte_lcore_id();
printf("hello from core %u\n", lcore_id);
return 0;
}
int main(int argc, char **argv) {
int socket_count;
int lcore_count;
int ret;
unsigned lcore_id;
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_panic("Cannot init EAL\n");
/* call lcore_hello() on every worker lcore */
RTE_LCORE_FOREACH_WORKER(lcore_id) {
rte_eal_remote_launch(lcore_hello, NULL, lcore_id);
}
/* call it on main lcore too */
lcore_hello(NULL);
// print socket count
socket_count = rte_socket_count();
printf("number of sockets:%i", socket_count);
// print lcore count
lcore_count = rte_lcore_count();
printf("number of lcores:%i", lcore_count);
// test timer
uint32_t seconds = 0;
uint64_t cycles_old = rte_get_tsc_cycles();
for (;;) {
uint64_t hz = rte_get_tsc_hz();
uint64_t cycles = rte_get_tsc_cycles();
uint64_t delta_cycles = cycles - cycles_old;
if (delta_cycles >= hz) {
++seconds;
cycles_old = cycles - (delta_cycles % hz);
}
printf("seconds : %u\n", seconds);
}
rte_eal_mp_wait_lcore();
/* clean up the EAL */
rte_eal_cleanup();
return 0;
}
uint64_t int_divide(uint64_t a, uint64_t b) {
uint64_t c = 0;
while (a >= b) {
a -= b;
++c;
}
return c;
}

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <chrono>
#include <cmath>
#include <errno.h>
#include <iostream>
#include <rte_cycles.h>
#include <rte_debug.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_lcore.h>
#include <rte_memory.h>
#include <rte_per_lcore.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/queue.h>
static int lcore_hello(__rte_unused void* arg) {
unsigned lcore_id;
lcore_id = rte_lcore_id();
printf("hello from core %u\n", lcore_id);
return 0;
}
int main(int argc, char** argv) {
int socket_count;
int lcore_count;
int ret;
unsigned lcore_id;
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_panic("Cannot init EAL\n");
/* call lcore_hello() on every worker lcore */
RTE_LCORE_FOREACH_WORKER(lcore_id) {
rte_eal_remote_launch(lcore_hello, NULL, lcore_id);
}
/* call it on main lcore too */
lcore_hello(NULL);
// print socket count
socket_count = rte_socket_count();
printf("number of sockets:%i", socket_count);
// print lcore count
lcore_count = rte_lcore_count();
printf("number of lcores:%i", lcore_count);
// test timer
int hz_mean = 0;
int n = 1;
int hz_cycles = -1;
std::chrono::time_point<std::chrono::system_clock> start, end;
start = std::chrono::system_clock::now();
end = std::chrono::system_clock::now();
std::chrono::duration<double> elapsed_seconds = end - start;
std::chrono::seconds sec(30);
do {
hz_mean = (hz_mean + rte_get_tsc_hz() / n) * n / (n + 1);
end = std::chrono::system_clock::now();
elapsed_seconds = end - start;
} while (elapsed_seconds <= sec);
int cycles_old = rte_get_tsc_cycles();
do {
end = std::chrono::system_clock::now();
elapsed_seconds = end - start;
} while (elapsed_seconds <= sec);
hz_cycles = (rte_get_tsc_cycles() - cycles_old) / 30;
std::cout << std::endl << "hz : " << rte_get_tsc_hz() << std::endl;
std::cout << "hz_cycles : " << hz_cycles << std::endl;
std::cout << "hz_mean : " << hz_mean << std::endl;
int length = 1000;
int hz_cycles_diff[length];
int hz_mean_diff[length];
int hz_cycles_diff_max = -1;
int hz_mean_diff_max = -1;
int hz = -1;
for (int i = 0; i < length; i++) {
hz = rte_get_tsc_hz();
hz_cycles_diff[i] = abs(hz - hz_cycles);
hz_mean_diff[i] = abs(hz - hz_mean);
if (hz_cycles_diff[i] > hz_cycles_diff_max) {
hz_cycles_diff_max = hz_cycles_diff[i];
}
if (hz_mean_diff[i] > hz_mean_diff_max) {
hz_mean_diff_max = hz_mean_diff[i];
}
}
std::cout << "hz_cycles_diff_max : " << hz_cycles_diff_max << std::endl;
std::cout << "hz_mean_diff_max : " << hz_mean_diff_max << std::endl;
rte_eal_mp_wait_lcore();
/* clean up the EAL */
rte_eal_cleanup();
return 0;
}

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examples/helloworld/meson.build Normal file
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project('dpdk-app', 'cpp')
dpdk = dependency('libdpdk')
sources = files('main.cpp')
executable('dpdk-app', sources, dependencies: dpdk)

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# list of all example apps. Keep 1-3 per line, in alphabetical order.
all_examples = [
'receive', 'send'
]
if get_option('examples') == ''
subdir_done()
endif
if get_option('examples').to_lower() == 'all'
examples = all_examples
allow_skips = true # don't flag an error if we can't build an app
else
examples = get_option('examples').split(',')
allow_skips = false # error out if we can't build a requested app
endif
default_cflags = machine_args
if cc.has_argument('-Wno-format-truncation')
default_cflags += '-Wno-format-truncation'
endif
default_ldflags = dpdk_extra_ldflags
if get_option('default_library') == 'static' and not is_windows
default_ldflags += ['-Wl,--export-dynamic']
endif
foreach example: examples
name = example.split('/')[-1]
build = true
sources = []
allow_experimental_apis = false
cflags = default_cflags
ldflags = default_ldflags
ext_deps = [execinfo]
includes = [include_directories(example)]
deps = ['eal', 'mempool', 'net', 'mbuf', 'ethdev', 'cmdline']
subdir(example)
if build
dep_objs = ext_deps
foreach d:deps
var_name = get_option('default_library') + '_rte_' + d
if not is_variable(var_name)
error('Missing dependency "@0@" for example "@1@"'.format(d, name))
endif
dep_objs += [get_variable(var_name)]
endforeach
if allow_experimental_apis
cflags += '-DALLOW_EXPERIMENTAL_API'
endif
executable('dpdk-' + name, sources,
include_directories: includes,
link_whole: link_whole_libs,
link_args: ldflags,
c_args: cflags,
dependencies: dep_objs)
elif not allow_skips
error('Cannot build requested example "' + name + '"')
else
message('Skipping example "' + name + '"')
endif
endforeach

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#include <stdint.h>
#include <inttypes.h>
#include <rte_eal.h>
#include <rte_ethdev.h>
#include <rte_cycles.h>
#include <rte_lcore.h>
#include <rte_mbuf.h>
#include <rte_ether.h>
#include <rte_ip.h>
#include <rte_udp.h>
#include <pthread.h>
#define RX_RING_SIZE 128
#define TX_RING_SIZE 512
#define NUM_MBUFS 8191
#define MBUF_CACHE_SIZE 250
#define BURST_SIZE 32
/**
* Ethernet header: Contains the destination address, source address
* and frame type.
*/
struct ether_hdr
{
struct ether_addr d_addr; /**< Destination address. */
struct ether_addr s_addr; /**< Source address. */
uint16_t ether_type; /**< Frame type. */
} __attribute__((__packed__));
/**
* IPv4 Header
*/
struct ipv4_hdr
{
uint8_t version_ihl; /**< version and header length */
uint8_t type_of_service; /**< type of service */
uint16_t total_length; /**< length of packet */
uint16_t packet_id; /**< packet ID */
uint16_t fragment_offset; /**< fragmentation offset */
uint8_t time_to_live; /**< time to live */
uint8_t next_proto_id; /**< protocol ID */
uint16_t hdr_checksum; /**< header checksum */
uint32_t src_addr; /**< source address */
uint32_t dst_addr; /**< destination address */
} __attribute__((__packed__));
/**
* UDP Header
*/
struct udp_hdr
{
uint16_t src_port; /**< UDP source port. */
uint16_t dst_port; /**< UDP destination port. */
uint16_t dgram_len; /**< UDP datagram length */
uint16_t dgram_cksum; /**< UDP datagram checksum */
} __attribute__((__packed__));
static const struct rte_eth_conf port_conf_default = {.rxmode = {.max_rx_pkt_len = ETHER_MAX_LEN}};
static inline int port_init(struct rte_mempool *mbuf_pool)
{
struct rte_eth_conf port_conf = port_conf_default;
const uint16_t rx_rings = 1, tx_rings = 1;
int retval;
uint16_t q;
retval = rte_eth_dev_configure(0, rx_rings, tx_rings, &port_conf);
if (retval != 0)
return retval;
/* Allocate and set up 1 RX queue per Ethernet port. */
for (q = 0; q < rx_rings; q++)
{
retval = rte_eth_rx_queue_setup(0, q, RX_RING_SIZE, rte_eth_dev_socket_id(0), NULL, mbuf_pool);
if (retval < 0)
return retval;
}
/* Allocate and set up 1 TX queue per Ethernet port. */
for (q = 0; q < tx_rings; q++)
{
retval = rte_eth_tx_queue_setup(0, q, TX_RING_SIZE, rte_eth_dev_socket_id(0), NULL);
if (retval < 0)
return retval;
}
/* Start the Ethernet port. */
retval = rte_eth_dev_start(0);
if (retval < 0)
return retval;
return 0;
}
int main(int argc, char *argv[])
{
struct rte_mempool *mbuf_pool;
int ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "initlize fail!");
argc -= ret;
argv += ret;
/* Creates a new mempool in memory to hold the mbufs. */
mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS,
MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
/* Initialize all ports. */
if (port_init(mbuf_pool) != 0)
rte_exit(EXIT_FAILURE, "Cannot init port %" PRIu8 "\n",
0);
for (;;)
{
struct rte_mbuf *pkt[BURST_SIZE];
int i;
for (i = 0; i < BURST_SIZE; i++)
{
pkt[i] = rte_pktmbuf_alloc(mbuf_pool);
}
uint16_t nb_rx = rte_eth_rx_burst(0, 0, pkt, BURST_SIZE);
if (nb_rx == 0)
{
continue;
}
char *msg;
struct ether_hdr *eth_hdr;
for (i = 0; i < nb_rx; i++)
{
eth_hdr = rte_pktmbuf_mtod(pkt[i], struct ether_hdr *);
printf("MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 " : ",
eth_hdr->s_addr.addr_bytes[0], eth_hdr->s_addr.addr_bytes[1],
eth_hdr->s_addr.addr_bytes[2], eth_hdr->s_addr.addr_bytes[3],
eth_hdr->s_addr.addr_bytes[4], eth_hdr->s_addr.addr_bytes[5]);
msg = ((rte_pktmbuf_mtod(pkt[i], char *)) + sizeof(struct ether_hdr));
int j;
for (j = 0; j < 10; j++)
printf("%c", msg[j]);
printf("\n");
rte_pktmbuf_free(pkt[0]);
}
}
return 0;
}

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examples/receive/meson.build Normal file
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sources = files(
'main.cpp'
)

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examples/send/main.cpp Normal file
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#include <stdint.h>
#include <inttypes.h>
#include <rte_eal.h>
#include <rte_ethdev.h>
#include <rte_cycles.h>
#include <rte_lcore.h>
#include <rte_mbuf.h>
#include <rte_ether.h>
#include <rte_ip.h>
#include <rte_udp.h>
#include <pthread.h>
#include <string.h>
#define RX_RING_SIZE 128
#define TX_RING_SIZE 512
#define NUM_MBUFS 8191
#define MBUF_CACHE_SIZE 250
#define BURST_SIZE 12
/**
* Ethernet header: Contains the destination address, source address
* and frame type.
*/
struct ether_hdr
{
struct ether_addr d_addr; /**< Destination address. */
struct ether_addr s_addr; /**< Source address. */
uint16_t ether_type; /**< Frame type. */
} __attribute__((__packed__));
/**
* IPv4 Header
*/
struct ipv4_hdr
{
uint8_t version_ihl; /**< version and header length */
uint8_t type_of_service; /**< type of service */
uint16_t total_length; /**< length of packet */
uint16_t packet_id; /**< packet ID */
uint16_t fragment_offset; /**< fragmentation offset */
uint8_t time_to_live; /**< time to live */
uint8_t next_proto_id; /**< protocol ID */
uint16_t hdr_checksum; /**< header checksum */
uint32_t src_addr; /**< source address */
uint32_t dst_addr; /**< destination address */
} __attribute__((__packed__));
/**
* UDP Header
*/
struct udp_hdr
{
uint16_t src_port; /**< UDP source port. */
uint16_t dst_port; /**< UDP destination port. */
uint16_t dgram_len; /**< UDP datagram length */
uint16_t dgram_cksum; /**< UDP datagram checksum */
} __attribute__((__packed__));
static const struct rte_eth_conf port_conf_default = {.rxmode = {.max_rx_pkt_len = ETHER_MAX_LEN}};
static inline int port_init(struct rte_mempool *mbuf_pool)
{
struct rte_eth_conf port_conf = port_conf_default;
const uint16_t rx_rings = 1, tx_rings = 1;
int retval;
uint16_t q;
retval = rte_eth_dev_configure(0, rx_rings, tx_rings, &port_conf);
if (retval != 0)
return retval;
/* Allocate and set up 1 RX queue per Ethernet port. */
for (q = 0; q < rx_rings; q++)
{
retval = rte_eth_rx_queue_setup(0, q, RX_RING_SIZE, rte_eth_dev_socket_id(0), NULL, mbuf_pool);
if (retval < 0)
return retval;
}
/* Allocate and set up 1 TX queue per Ethernet port. */
for (q = 0; q < tx_rings; q++)
{
retval = rte_eth_tx_queue_setup(0, q, TX_RING_SIZE, rte_eth_dev_socket_id(0), NULL);
if (retval < 0)
return retval;
}
/* Start the Ethernet port. */
retval = rte_eth_dev_start(0);
if (retval < 0)
return retval;
return 0;
}
int main(int argc, char *argv[])
{
struct rte_mempool *mbuf_pool;
int ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "initlize fail!");
argc -= ret;
argv += ret;
/* Creates a new mempool in memory to hold the mbufs. */
mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS, MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
/* Initialize all ports. */
if (port_init(mbuf_pool) != 0)
rte_exit(EXIT_FAILURE, "Cannot init port %" PRIu8 "\n", 0);
struct Message
{
char data[10];
};
struct ether_hdr *eth_hdr;
struct Message obj = {{'H', 'e', 'l', 'l', 'o', '2', '0', '1', '8'}};
struct Message *msg;
struct ether_addr s_addr = {{0x14, 0x02, 0xEC, 0x89, 0x8D, 0x24}};
struct ether_addr d_addr = {{0x14, 0x02, 0xEC, 0x89, 0xED, 0x54}};
uint16_t ether_type = 0x0a00;
struct rte_mbuf *pkt[BURST_SIZE];
int i;
for (i = 0; i < BURST_SIZE; i++)
{
pkt[i] = rte_pktmbuf_alloc(mbuf_pool);
eth_hdr = rte_pktmbuf_mtod(pkt[i], struct ether_hdr *);
eth_hdr->d_addr = d_addr;
eth_hdr->s_addr = s_addr;
eth_hdr->ether_type = ether_type;
msg = (struct Message *)(rte_pktmbuf_mtod(pkt[i], char *) + sizeof(struct ether_hdr));
*msg = obj;
int pkt_size = sizeof(struct Message) + sizeof(struct ether_hdr);
pkt[i]->data_len = pkt_size;
pkt[i]->pkt_len = pkt_size;
}
uint16_t nb_tx = rte_eth_tx_burst(0, 0, pkt, BURST_SIZE);
printf("nb_tx: ", nb_tx);
for (i = 0; i < BURST_SIZE; i++)
rte_pktmbuf_free(pkt[i]);
return 0;
}

3
examples/send/meson.build Normal file
View File

@ -0,0 +1,3 @@
sources = files(
'main.cpp'
)