DPDK  20.11.3
examples/ntb/ntb_fwd.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2019 Intel Corporation
*/
#include <stdint.h>
#include <stdio.h>
#include <inttypes.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <getopt.h>
#include <cmdline_parse_string.h>
#include <cmdline_socket.h>
#include <cmdline.h>
#include <rte_common.h>
#include <rte_rawdev.h>
#include <rte_ethdev.h>
#include <rte_malloc.h>
#include <rte_lcore.h>
#include <rte_cycles.h>
#include <rte_pmd_ntb.h>
/* Per-port statistics struct */
struct ntb_port_statistics {
uint64_t tx;
uint64_t rx;
/* Port 0: NTB dev, Port 1: ethdev when iofwd. */
struct ntb_port_statistics ntb_port_stats[2];
struct ntb_fwd_stream {
uint16_t tx_port;
uint16_t rx_port;
uint16_t qp_id;
uint8_t tx_ntb; /* If ntb device is tx port. */
};
struct ntb_fwd_lcore_conf {
uint16_t stream_id;
uint16_t nb_stream;
uint8_t stopped;
};
enum ntb_fwd_mode {
FILE_TRANS = 0,
RXONLY,
TXONLY,
IOFWD,
MAX_FWD_MODE,
};
static const char *const fwd_mode_s[] = {
"file-trans",
"rxonly",
"txonly",
"iofwd",
NULL,
};
static enum ntb_fwd_mode fwd_mode = MAX_FWD_MODE;
static struct ntb_fwd_lcore_conf fwd_lcore_conf[RTE_MAX_LCORE];
static struct ntb_fwd_stream *fwd_streams;
static struct rte_mempool *mbuf_pool;
#define NTB_DRV_NAME_LEN 7
#define MEMPOOL_CACHE_SIZE 256
static uint8_t in_test;
static uint8_t interactive = 1;
static uint16_t eth_port_id = RTE_MAX_ETHPORTS;
static uint16_t dev_id;
/* Number of queues, default set as 1 */
static uint16_t num_queues = 1;
static uint16_t ntb_buf_size = RTE_MBUF_DEFAULT_BUF_SIZE;
/* Configurable number of descriptors */
#define NTB_DEFAULT_NUM_DESCS 1024
static uint16_t nb_desc = NTB_DEFAULT_NUM_DESCS;
static uint16_t tx_free_thresh;
#define NTB_MAX_PKT_BURST 32
#define NTB_DFLT_PKT_BURST 32
static uint16_t pkt_burst = NTB_DFLT_PKT_BURST;
#define BURST_TX_RETRIES 64
static struct rte_eth_conf eth_port_conf = {
.rxmode = {
.split_hdr_size = 0,
},
.rx_adv_conf = {
.rss_conf = {
.rss_key = NULL,
.rss_hf = ETH_RSS_IP,
},
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
},
};
/* *** Help command with introduction. *** */
struct cmd_help_result {
cmdline_fixed_string_t help;
};
static void
cmd_help_parsed(__rte_unused void *parsed_result,
struct cmdline *cl,
__rte_unused void *data)
{
cmdline_printf(
cl,
"\n"
"The following commands are currently available:\n\n"
"Control:\n"
" quit :"
" Quit the application.\n"
"\nTransmission:\n"
" send [path] :"
" Send [path] file. Only take effect in file-trans mode\n"
" start :"
" Start transmissions.\n"
" stop :"
" Stop transmissions.\n"
" clear/show port stats :"
" Clear/show port stats.\n"
" set fwd file-trans/rxonly/txonly/iofwd :"
" Set packet forwarding mode.\n"
);
}
cmdline_parse_token_string_t cmd_help_help =
TOKEN_STRING_INITIALIZER(struct cmd_help_result, help, "help");
cmdline_parse_inst_t cmd_help = {
.f = cmd_help_parsed,
.data = NULL,
.help_str = "show help",
.tokens = {
(void *)&cmd_help_help,
NULL,
},
};
/* *** QUIT *** */
struct cmd_quit_result {
cmdline_fixed_string_t quit;
};
static void
cmd_quit_parsed(__rte_unused void *parsed_result,
struct cmdline *cl,
__rte_unused void *data)
{
struct ntb_fwd_lcore_conf *conf;
uint32_t lcore_id;
/* Stop transmission first. */
conf = &fwd_lcore_conf[lcore_id];
if (!conf->nb_stream)
continue;
if (conf->stopped)
continue;
conf->stopped = 1;
}
printf("\nWaiting for lcores to finish...\n");
in_test = 0;
/* Stop traffic and Close port. */
rte_rawdev_stop(dev_id);
if (eth_port_id < RTE_MAX_ETHPORTS && fwd_mode == IOFWD) {
rte_eth_dev_stop(eth_port_id);
rte_eth_dev_close(eth_port_id);
}
cmdline_quit(cl);
}
cmdline_parse_token_string_t cmd_quit_quit =
TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit");
cmdline_parse_inst_t cmd_quit = {
.f = cmd_quit_parsed,
.data = NULL,
.help_str = "exit application",
.tokens = {
(void *)&cmd_quit_quit,
NULL,
},
};
/* *** SEND FILE PARAMETERS *** */
struct cmd_sendfile_result {
cmdline_fixed_string_t send_string;
char filepath[];
};
static void
cmd_sendfile_parsed(void *parsed_result,
__rte_unused struct cmdline *cl,
__rte_unused void *data)
{
struct cmd_sendfile_result *res = parsed_result;
struct rte_rawdev_buf *pkts_send[NTB_MAX_PKT_BURST];
struct rte_mbuf *mbuf_send[NTB_MAX_PKT_BURST];
uint64_t size, count, i, j, nb_burst;
uint16_t nb_tx, buf_size;
unsigned int nb_pkt;
size_t queue_id = 0;
uint16_t retry = 0;
uint32_t val;
FILE *file;
int ret;
if (num_queues != 1) {
printf("File transmission only supports 1 queue.\n");
num_queues = 1;
}
file = fopen(res->filepath, "r");
if (file == NULL) {
printf("Fail to open the file.\n");
return;
}
if (fseek(file, 0, SEEK_END) < 0) {
printf("Fail to get file size.\n");
fclose(file);
return;
}
size = ftell(file);
if (fseek(file, 0, SEEK_SET) < 0) {
printf("Fail to get file size.\n");
fclose(file);
return;
}
/* Tell remote about the file size. */
val = size >> 32;
rte_rawdev_set_attr(dev_id, "spad_user_0", val);
val = size;
rte_rawdev_set_attr(dev_id, "spad_user_1", val);
printf("Sending file, size is %"PRIu64"\n", size);
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
pkts_send[i] = (struct rte_rawdev_buf *)
malloc(sizeof(struct rte_rawdev_buf));
buf_size = ntb_buf_size - RTE_PKTMBUF_HEADROOM;
count = (size + buf_size - 1) / buf_size;
nb_burst = (count + pkt_burst - 1) / pkt_burst;
for (i = 0; i < nb_burst; i++) {
val = RTE_MIN(count, pkt_burst);
if (rte_mempool_get_bulk(mbuf_pool, (void **)mbuf_send,
val) == 0) {
for (nb_pkt = 0; nb_pkt < val; nb_pkt++) {
mbuf_send[nb_pkt]->port = dev_id;
mbuf_send[nb_pkt]->data_len =
fread(rte_pktmbuf_mtod(mbuf_send[nb_pkt],
void *), 1, buf_size, file);
mbuf_send[nb_pkt]->pkt_len =
mbuf_send[nb_pkt]->data_len;
pkts_send[nb_pkt]->buf_addr = mbuf_send[nb_pkt];
}
} else {
for (nb_pkt = 0; nb_pkt < val; nb_pkt++) {
mbuf_send[nb_pkt] =
rte_mbuf_raw_alloc(mbuf_pool);
if (mbuf_send[nb_pkt] == NULL)
break;
mbuf_send[nb_pkt]->port = dev_id;
mbuf_send[nb_pkt]->data_len =
fread(rte_pktmbuf_mtod(mbuf_send[nb_pkt],
void *), 1, buf_size, file);
mbuf_send[nb_pkt]->pkt_len =
mbuf_send[nb_pkt]->data_len;
pkts_send[nb_pkt]->buf_addr = mbuf_send[nb_pkt];
}
}
ret = rte_rawdev_enqueue_buffers(dev_id, pkts_send, nb_pkt,
(void *)queue_id);
if (ret < 0) {
printf("Enqueue failed with err %d\n", ret);
for (j = 0; j < nb_pkt; j++)
rte_pktmbuf_free(mbuf_send[j]);
goto clean;
}
nb_tx = ret;
while (nb_tx != nb_pkt && retry < BURST_TX_RETRIES) {
&pkts_send[nb_tx], nb_pkt - nb_tx,
(void *)queue_id);
if (ret < 0) {
printf("Enqueue failed with err %d\n", ret);
for (j = nb_tx; j < nb_pkt; j++)
rte_pktmbuf_free(mbuf_send[j]);
goto clean;
}
nb_tx += ret;
}
count -= nb_pkt;
}
/* Clear register after file sending done. */
rte_rawdev_set_attr(dev_id, "spad_user_0", 0);
rte_rawdev_set_attr(dev_id, "spad_user_1", 0);
printf("Done sending file.\n");
clean:
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
free(pkts_send[i]);
fclose(file);
}
cmdline_parse_token_string_t cmd_send_file_send =
TOKEN_STRING_INITIALIZER(struct cmd_sendfile_result, send_string,
"send");
cmdline_parse_token_string_t cmd_send_file_filepath =
TOKEN_STRING_INITIALIZER(struct cmd_sendfile_result, filepath, NULL);
cmdline_parse_inst_t cmd_send_file = {
.f = cmd_sendfile_parsed,
.data = NULL,
.help_str = "send <file_path>",
.tokens = {
(void *)&cmd_send_file_send,
(void *)&cmd_send_file_filepath,
NULL,
},
};
#define RECV_FILE_LEN 30
static int
start_polling_recv_file(void *param)
{
struct rte_rawdev_buf *pkts_recv[NTB_MAX_PKT_BURST];
struct ntb_fwd_lcore_conf *conf = param;
struct rte_mbuf *mbuf;
char filepath[RECV_FILE_LEN];
uint64_t val, size, file_len;
uint16_t nb_rx, i, file_no;
size_t queue_id = 0;
FILE *file;
int ret;
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
pkts_recv[i] = (struct rte_rawdev_buf *)
malloc(sizeof(struct rte_rawdev_buf));
file_no = 0;
while (!conf->stopped) {
snprintf(filepath, RECV_FILE_LEN, "ntb_recv_file%d", file_no);
file = fopen(filepath, "w");
if (file == NULL) {
printf("Fail to open the file.\n");
return -EINVAL;
}
rte_rawdev_get_attr(dev_id, "spad_user_0", &val);
size = val << 32;
rte_rawdev_get_attr(dev_id, "spad_user_1", &val);
size |= val;
if (!size) {
fclose(file);
continue;
}
file_len = 0;
nb_rx = NTB_MAX_PKT_BURST;
while (file_len < size && !conf->stopped) {
ret = rte_rawdev_dequeue_buffers(dev_id, pkts_recv,
pkt_burst, (void *)queue_id);
if (ret < 0) {
printf("Dequeue failed with err %d\n", ret);
fclose(file);
goto clean;
}
nb_rx = ret;
ntb_port_stats[0].rx += nb_rx;
for (i = 0; i < nb_rx; i++) {
mbuf = pkts_recv[i]->buf_addr;
fwrite(rte_pktmbuf_mtod(mbuf, void *), 1,
mbuf->data_len, file);
file_len += mbuf->data_len;
pkts_recv[i]->buf_addr = NULL;
}
}
printf("Received file (size: %" PRIu64 ") from peer to %s.\n",
size, filepath);
fclose(file);
file_no++;
}
clean:
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
free(pkts_recv[i]);
return 0;
}
static int
start_iofwd_per_lcore(void *param)
{
struct rte_rawdev_buf *ntb_buf[NTB_MAX_PKT_BURST];
struct rte_mbuf *pkts_burst[NTB_MAX_PKT_BURST];
struct ntb_fwd_lcore_conf *conf = param;
struct ntb_fwd_stream fs;
uint16_t nb_rx, nb_tx;
int i, j, ret;
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
ntb_buf[i] = (struct rte_rawdev_buf *)
malloc(sizeof(struct rte_rawdev_buf));
while (!conf->stopped) {
for (i = 0; i < conf->nb_stream; i++) {
fs = fwd_streams[conf->stream_id + i];
if (fs.tx_ntb) {
nb_rx = rte_eth_rx_burst(fs.rx_port,
fs.qp_id, pkts_burst,
pkt_burst);
if (unlikely(nb_rx == 0))
continue;
for (j = 0; j < nb_rx; j++)
ntb_buf[j]->buf_addr = pkts_burst[j];
ret = rte_rawdev_enqueue_buffers(fs.tx_port,
ntb_buf, nb_rx,
(void *)(size_t)fs.qp_id);
if (ret < 0) {
printf("Enqueue failed with err %d\n",
ret);
for (j = 0; j < nb_rx; j++)
rte_pktmbuf_free(pkts_burst[j]);
goto clean;
}
nb_tx = ret;
ntb_port_stats[0].tx += nb_tx;
ntb_port_stats[1].rx += nb_rx;
} else {
ret = rte_rawdev_dequeue_buffers(fs.rx_port,
ntb_buf, pkt_burst,
(void *)(size_t)fs.qp_id);
if (ret < 0) {
printf("Dequeue failed with err %d\n",
ret);
goto clean;
}
nb_rx = ret;
if (unlikely(nb_rx == 0))
continue;
for (j = 0; j < nb_rx; j++)
pkts_burst[j] = ntb_buf[j]->buf_addr;
nb_tx = rte_eth_tx_burst(fs.tx_port,
fs.qp_id, pkts_burst, nb_rx);
ntb_port_stats[1].tx += nb_tx;
ntb_port_stats[0].rx += nb_rx;
}
if (unlikely(nb_tx < nb_rx)) {
do {
rte_pktmbuf_free(pkts_burst[nb_tx]);
} while (++nb_tx < nb_rx);
}
}
}
clean:
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
free(ntb_buf[i]);
return 0;
}
static int
start_rxonly_per_lcore(void *param)
{
struct rte_rawdev_buf *ntb_buf[NTB_MAX_PKT_BURST];
struct ntb_fwd_lcore_conf *conf = param;
struct ntb_fwd_stream fs;
uint16_t nb_rx;
int i, j, ret;
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
ntb_buf[i] = (struct rte_rawdev_buf *)
malloc(sizeof(struct rte_rawdev_buf));
while (!conf->stopped) {
for (i = 0; i < conf->nb_stream; i++) {
fs = fwd_streams[conf->stream_id + i];
ret = rte_rawdev_dequeue_buffers(fs.rx_port,
ntb_buf, pkt_burst, (void *)(size_t)fs.qp_id);
if (ret < 0) {
printf("Dequeue failed with err %d\n", ret);
goto clean;
}
nb_rx = ret;
if (unlikely(nb_rx == 0))
continue;
ntb_port_stats[0].rx += nb_rx;
for (j = 0; j < nb_rx; j++)
rte_pktmbuf_free(ntb_buf[j]->buf_addr);
}
}
clean:
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
free(ntb_buf[i]);
return 0;
}
static int
start_txonly_per_lcore(void *param)
{
struct rte_rawdev_buf *ntb_buf[NTB_MAX_PKT_BURST];
struct rte_mbuf *pkts_burst[NTB_MAX_PKT_BURST];
struct ntb_fwd_lcore_conf *conf = param;
struct ntb_fwd_stream fs;
uint16_t nb_pkt, nb_tx;
int i, j, ret;
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
ntb_buf[i] = (struct rte_rawdev_buf *)
malloc(sizeof(struct rte_rawdev_buf));
while (!conf->stopped) {
for (i = 0; i < conf->nb_stream; i++) {
fs = fwd_streams[conf->stream_id + i];
if (rte_mempool_get_bulk(mbuf_pool, (void **)pkts_burst,
pkt_burst) == 0) {
for (nb_pkt = 0; nb_pkt < pkt_burst; nb_pkt++) {
pkts_burst[nb_pkt]->port = dev_id;
pkts_burst[nb_pkt]->data_len =
pkts_burst[nb_pkt]->buf_len -
RTE_PKTMBUF_HEADROOM;
pkts_burst[nb_pkt]->pkt_len =
pkts_burst[nb_pkt]->data_len;
ntb_buf[nb_pkt]->buf_addr =
pkts_burst[nb_pkt];
}
} else {
for (nb_pkt = 0; nb_pkt < pkt_burst; nb_pkt++) {
pkts_burst[nb_pkt] =
rte_pktmbuf_alloc(mbuf_pool);
if (pkts_burst[nb_pkt] == NULL)
break;
pkts_burst[nb_pkt]->port = dev_id;
pkts_burst[nb_pkt]->data_len =
pkts_burst[nb_pkt]->buf_len -
RTE_PKTMBUF_HEADROOM;
pkts_burst[nb_pkt]->pkt_len =
pkts_burst[nb_pkt]->data_len;
ntb_buf[nb_pkt]->buf_addr =
pkts_burst[nb_pkt];
}
}
ret = rte_rawdev_enqueue_buffers(fs.tx_port, ntb_buf,
nb_pkt, (void *)(size_t)fs.qp_id);
if (ret < 0) {
printf("Enqueue failed with err %d\n", ret);
for (j = 0; j < nb_pkt; j++)
rte_pktmbuf_free(pkts_burst[j]);
goto clean;
}
nb_tx = ret;
ntb_port_stats[0].tx += nb_tx;
if (unlikely(nb_tx < nb_pkt)) {
do {
rte_pktmbuf_free(pkts_burst[nb_tx]);
} while (++nb_tx < nb_pkt);
}
}
}
clean:
for (i = 0; i < NTB_MAX_PKT_BURST; i++)
free(ntb_buf[i]);
return 0;
}
static int
ntb_fwd_config_setup(void)
{
uint16_t i;
/* Make sure iofwd has valid ethdev. */
if (fwd_mode == IOFWD && eth_port_id >= RTE_MAX_ETHPORTS) {
printf("No ethdev, cannot be in iofwd mode.");
return -EINVAL;
}
if (fwd_mode == IOFWD) {
fwd_streams = rte_zmalloc("ntb_fwd: fwd_streams",
sizeof(struct ntb_fwd_stream) * num_queues * 2,
RTE_CACHE_LINE_SIZE);
for (i = 0; i < num_queues; i++) {
fwd_streams[i * 2].qp_id = i;
fwd_streams[i * 2].tx_port = dev_id;
fwd_streams[i * 2].rx_port = eth_port_id;
fwd_streams[i * 2].tx_ntb = 1;
fwd_streams[i * 2 + 1].qp_id = i;
fwd_streams[i * 2 + 1].tx_port = eth_port_id;
fwd_streams[i * 2 + 1].rx_port = dev_id;
fwd_streams[i * 2 + 1].tx_ntb = 0;
}
return 0;
}
if (fwd_mode == RXONLY || fwd_mode == FILE_TRANS) {
/* Only support 1 queue in file-trans for in order. */
if (fwd_mode == FILE_TRANS)
num_queues = 1;
fwd_streams = rte_zmalloc("ntb_fwd: fwd_streams",
sizeof(struct ntb_fwd_stream) * num_queues,
RTE_CACHE_LINE_SIZE);
for (i = 0; i < num_queues; i++) {
fwd_streams[i].qp_id = i;
fwd_streams[i].tx_port = RTE_MAX_ETHPORTS;
fwd_streams[i].rx_port = dev_id;
fwd_streams[i].tx_ntb = 0;
}
return 0;
}
if (fwd_mode == TXONLY) {
fwd_streams = rte_zmalloc("ntb_fwd: fwd_streams",
sizeof(struct ntb_fwd_stream) * num_queues,
RTE_CACHE_LINE_SIZE);
for (i = 0; i < num_queues; i++) {
fwd_streams[i].qp_id = i;
fwd_streams[i].tx_port = dev_id;
fwd_streams[i].rx_port = RTE_MAX_ETHPORTS;
fwd_streams[i].tx_ntb = 1;
}
}
return 0;
}
static void
assign_stream_to_lcores(void)
{
struct ntb_fwd_lcore_conf *conf;
struct ntb_fwd_stream *fs;
uint16_t nb_streams, sm_per_lcore, sm_id, i;
uint32_t lcore_id;
uint8_t lcore_num, nb_extra;
lcore_num = rte_lcore_count();
/* Exclude main core */
lcore_num--;
nb_streams = (fwd_mode == IOFWD) ? num_queues * 2 : num_queues;
sm_per_lcore = nb_streams / lcore_num;
nb_extra = nb_streams % lcore_num;
sm_id = 0;
i = 0;
conf = &fwd_lcore_conf[lcore_id];
if (i < nb_extra) {
conf->nb_stream = sm_per_lcore + 1;
conf->stream_id = sm_id;
sm_id = sm_id + sm_per_lcore + 1;
} else {
conf->nb_stream = sm_per_lcore;
conf->stream_id = sm_id;
sm_id = sm_id + sm_per_lcore;
}
i++;
if (sm_id >= nb_streams)
break;
}
/* Print packet forwading config. */
conf = &fwd_lcore_conf[lcore_id];
if (!conf->nb_stream)
continue;
printf("Streams on Lcore %u :\n", lcore_id);
for (i = 0; i < conf->nb_stream; i++) {
fs = &fwd_streams[conf->stream_id + i];
if (fwd_mode == IOFWD)
printf(" + Stream %u : %s%u RX -> %s%u TX,"
" Q=%u\n", conf->stream_id + i,
fs->tx_ntb ? "Eth" : "NTB", fs->rx_port,
fs->tx_ntb ? "NTB" : "Eth", fs->tx_port,
fs->qp_id);
if (fwd_mode == FILE_TRANS || fwd_mode == RXONLY)
printf(" + Stream %u : %s%u RX only\n",
conf->stream_id, "NTB", fs->rx_port);
if (fwd_mode == TXONLY)
printf(" + Stream %u : %s%u TX only\n",
conf->stream_id, "NTB", fs->tx_port);
}
}
}
static void
start_pkt_fwd(void)
{
struct ntb_fwd_lcore_conf *conf;
struct rte_eth_link eth_link;
uint32_t lcore_id;
int ret, i;
char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
ret = ntb_fwd_config_setup();
if (ret < 0) {
printf("Cannot start traffic. Please reset fwd mode.\n");
return;
}
/* If using iofwd, checking ethdev link status first. */
if (fwd_mode == IOFWD) {
printf("Checking eth link status...\n");
/* Wait for eth link up at most 100 times. */
for (i = 0; i < 100; i++) {
ret = rte_eth_link_get(eth_port_id, &eth_link);
if (ret < 0) {
printf("Link get failed with err %d\n", ret);
return;
}
if (eth_link.link_status) {
rte_eth_link_to_str(link_status_text,
sizeof(link_status_text),
&eth_link);
printf("Eth%u %s\n", eth_port_id,
link_status_text);
break;
}
}
if (!eth_link.link_status) {
printf("Eth%u link down. Cannot start traffic.\n",
eth_port_id);
return;
}
}
assign_stream_to_lcores();
in_test = 1;
conf = &fwd_lcore_conf[lcore_id];
if (!conf->nb_stream)
continue;
conf->stopped = 0;
if (fwd_mode == FILE_TRANS)
rte_eal_remote_launch(start_polling_recv_file,
conf, lcore_id);
else if (fwd_mode == IOFWD)
rte_eal_remote_launch(start_iofwd_per_lcore,
conf, lcore_id);
else if (fwd_mode == RXONLY)
rte_eal_remote_launch(start_rxonly_per_lcore,
conf, lcore_id);
else if (fwd_mode == TXONLY)
rte_eal_remote_launch(start_txonly_per_lcore,
conf, lcore_id);
}
}
/* *** START FWD PARAMETERS *** */
struct cmd_start_result {
cmdline_fixed_string_t start;
};
static void
cmd_start_parsed(__rte_unused void *parsed_result,
__rte_unused struct cmdline *cl,
__rte_unused void *data)
{
start_pkt_fwd();
}
cmdline_parse_token_string_t cmd_start_start =
TOKEN_STRING_INITIALIZER(struct cmd_start_result, start, "start");
cmdline_parse_inst_t cmd_start = {
.f = cmd_start_parsed,
.data = NULL,
.help_str = "start pkt fwd between ntb and ethdev",
.tokens = {
(void *)&cmd_start_start,
NULL,
},
};
/* *** STOP *** */
struct cmd_stop_result {
cmdline_fixed_string_t stop;
};
static void
cmd_stop_parsed(__rte_unused void *parsed_result,
__rte_unused struct cmdline *cl,
__rte_unused void *data)
{
struct ntb_fwd_lcore_conf *conf;
uint32_t lcore_id;
conf = &fwd_lcore_conf[lcore_id];
if (!conf->nb_stream)
continue;
if (conf->stopped)
continue;
conf->stopped = 1;
}
printf("\nWaiting for lcores to finish...\n");
in_test = 0;
printf("\nDone.\n");
}
cmdline_parse_token_string_t cmd_stop_stop =
TOKEN_STRING_INITIALIZER(struct cmd_stop_result, stop, "stop");
cmdline_parse_inst_t cmd_stop = {
.f = cmd_stop_parsed,
.data = NULL,
.help_str = "stop: Stop packet forwarding",
.tokens = {
(void *)&cmd_stop_stop,
NULL,
},
};
static void
ntb_stats_clear(void)
{
int nb_ids, i;
uint32_t *ids;
/* Clear NTB dev stats */
nb_ids = rte_rawdev_xstats_names_get(dev_id, NULL, 0);
if (nb_ids < 0) {
printf("Error: Cannot get count of xstats\n");
return;
}
ids = malloc(sizeof(uint32_t) * nb_ids);
for (i = 0; i < nb_ids; i++)
ids[i] = i;
rte_rawdev_xstats_reset(dev_id, ids, nb_ids);
printf("\n statistics for NTB port %d cleared\n", dev_id);
/* Clear Ethdev stats if have any */
if (fwd_mode == IOFWD && eth_port_id != RTE_MAX_ETHPORTS) {
rte_eth_stats_reset(eth_port_id);
printf("\n statistics for ETH port %d cleared\n", eth_port_id);
}
}
static inline void
ntb_calculate_throughput(uint16_t port) {
uint64_t diff_pkts_rx, diff_pkts_tx, diff_cycles;
uint64_t mpps_rx, mpps_tx;
static uint64_t prev_pkts_rx[2];
static uint64_t prev_pkts_tx[2];
static uint64_t prev_cycles[2];
diff_cycles = prev_cycles[port];
prev_cycles[port] = rte_rdtsc();
if (diff_cycles > 0)
diff_cycles = prev_cycles[port] - diff_cycles;
diff_pkts_rx = (ntb_port_stats[port].rx > prev_pkts_rx[port]) ?
(ntb_port_stats[port].rx - prev_pkts_rx[port]) : 0;
diff_pkts_tx = (ntb_port_stats[port].tx > prev_pkts_tx[port]) ?
(ntb_port_stats[port].tx - prev_pkts_tx[port]) : 0;
prev_pkts_rx[port] = ntb_port_stats[port].rx;
prev_pkts_tx[port] = ntb_port_stats[port].tx;
mpps_rx = diff_cycles > 0 ?
diff_pkts_rx * rte_get_tsc_hz() / diff_cycles : 0;
mpps_tx = diff_cycles > 0 ?
diff_pkts_tx * rte_get_tsc_hz() / diff_cycles : 0;
printf(" Throughput (since last show)\n");
printf(" Rx-pps: %12"PRIu64"\n Tx-pps: %12"PRIu64"\n",
mpps_rx, mpps_tx);
}
static void
ntb_stats_display(void)
{
struct rte_rawdev_xstats_name *xstats_names;
struct rte_eth_stats stats;
uint64_t *values;
uint32_t *ids;
int nb_ids, i;
printf("###### statistics for NTB port %d #######\n", dev_id);
/* Get NTB dev stats and stats names */
nb_ids = rte_rawdev_xstats_names_get(dev_id, NULL, 0);
if (nb_ids < 0) {
printf("Error: Cannot get count of xstats\n");
return;
}
xstats_names = malloc(sizeof(struct rte_rawdev_xstats_name) * nb_ids);
if (xstats_names == NULL) {
printf("Cannot allocate memory for xstats lookup\n");
return;
}
dev_id, xstats_names, nb_ids)) {
printf("Error: Cannot get xstats lookup\n");
free(xstats_names);
return;
}
ids = malloc(sizeof(uint32_t) * nb_ids);
for (i = 0; i < nb_ids; i++)
ids[i] = i;
values = malloc(sizeof(uint64_t) * nb_ids);
if (nb_ids != rte_rawdev_xstats_get(dev_id, ids, values, nb_ids)) {
printf("Error: Unable to get xstats\n");
free(xstats_names);
free(values);
free(ids);
return;
}
/* Display NTB dev stats */
for (i = 0; i < nb_ids; i++)
printf(" %s: %"PRIu64"\n", xstats_names[i].name, values[i]);
ntb_calculate_throughput(0);
/* Get Ethdev stats if have any */
if (fwd_mode == IOFWD && eth_port_id != RTE_MAX_ETHPORTS) {
printf("###### statistics for ETH port %d ######\n",
eth_port_id);
rte_eth_stats_get(eth_port_id, &stats);
printf(" RX-packets: %"PRIu64"\n", stats.ipackets);
printf(" RX-bytes: %"PRIu64"\n", stats.ibytes);
printf(" RX-errors: %"PRIu64"\n", stats.ierrors);
printf(" RX-missed: %"PRIu64"\n", stats.imissed);
printf(" TX-packets: %"PRIu64"\n", stats.opackets);
printf(" TX-bytes: %"PRIu64"\n", stats.obytes);
printf(" TX-errors: %"PRIu64"\n", stats.oerrors);
ntb_calculate_throughput(1);
}
free(xstats_names);
free(values);
free(ids);
}
/* *** SHOW/CLEAR PORT STATS *** */
struct cmd_stats_result {
cmdline_fixed_string_t show;
cmdline_fixed_string_t port;
cmdline_fixed_string_t stats;
};
static void
cmd_stats_parsed(void *parsed_result,
__rte_unused struct cmdline *cl,
__rte_unused void *data)
{
struct cmd_stats_result *res = parsed_result;
if (!strcmp(res->show, "clear"))
ntb_stats_clear();
else
ntb_stats_display();
}
cmdline_parse_token_string_t cmd_stats_show =
TOKEN_STRING_INITIALIZER(struct cmd_stats_result, show, "show#clear");
cmdline_parse_token_string_t cmd_stats_port =
TOKEN_STRING_INITIALIZER(struct cmd_stats_result, port, "port");
cmdline_parse_token_string_t cmd_stats_stats =
TOKEN_STRING_INITIALIZER(struct cmd_stats_result, stats, "stats");
cmdline_parse_inst_t cmd_stats = {
.f = cmd_stats_parsed,
.data = NULL,
.help_str = "show|clear port stats",
.tokens = {
(void *)&cmd_stats_show,
(void *)&cmd_stats_port,
(void *)&cmd_stats_stats,
NULL,
},
};
/* *** SET FORWARDING MODE *** */
struct cmd_set_fwd_mode_result {
cmdline_fixed_string_t set;
cmdline_fixed_string_t fwd;
cmdline_fixed_string_t mode;
};
static void
cmd_set_fwd_mode_parsed(__rte_unused void *parsed_result,
__rte_unused struct cmdline *cl,
__rte_unused void *data)
{
struct cmd_set_fwd_mode_result *res = parsed_result;
int i;
if (in_test) {
printf("Please stop traffic first.\n");
return;
}
for (i = 0; i < MAX_FWD_MODE; i++) {
if (!strcmp(res->mode, fwd_mode_s[i])) {
fwd_mode = i;
return;
}
}
printf("Invalid %s packet forwarding mode.\n", res->mode);
}
cmdline_parse_token_string_t cmd_setfwd_set =
TOKEN_STRING_INITIALIZER(struct cmd_set_fwd_mode_result, set, "set");
cmdline_parse_token_string_t cmd_setfwd_fwd =
TOKEN_STRING_INITIALIZER(struct cmd_set_fwd_mode_result, fwd, "fwd");
cmdline_parse_token_string_t cmd_setfwd_mode =
TOKEN_STRING_INITIALIZER(struct cmd_set_fwd_mode_result, mode,
"file-trans#iofwd#txonly#rxonly");
cmdline_parse_inst_t cmd_set_fwd_mode = {
.f = cmd_set_fwd_mode_parsed,
.data = NULL,
.help_str = "set forwarding mode as file-trans|rxonly|txonly|iofwd",
.tokens = {
(void *)&cmd_setfwd_set,
(void *)&cmd_setfwd_fwd,
(void *)&cmd_setfwd_mode,
NULL,
},
};
/* list of instructions */
cmdline_parse_ctx_t main_ctx[] = {
(cmdline_parse_inst_t *)&cmd_help,
(cmdline_parse_inst_t *)&cmd_send_file,
(cmdline_parse_inst_t *)&cmd_start,
(cmdline_parse_inst_t *)&cmd_stop,
(cmdline_parse_inst_t *)&cmd_stats,
(cmdline_parse_inst_t *)&cmd_set_fwd_mode,
(cmdline_parse_inst_t *)&cmd_quit,
NULL,
};
/* prompt function, called from main on MAIN lcore */
static void
prompt(void)
{
struct cmdline *cl;
cl = cmdline_stdin_new(main_ctx, "ntb> ");
if (cl == NULL)
return;
cmdline_interact(cl);
cmdline_stdin_exit(cl);
}
static void
signal_handler(int signum)
{
if (signum == SIGINT || signum == SIGTERM) {
printf("\nSignal %d received, preparing to exit...\n", signum);
signal(signum, SIG_DFL);
kill(getpid(), signum);
}
}
#define OPT_BUF_SIZE "buf-size"
#define OPT_FWD_MODE "fwd-mode"
#define OPT_NB_DESC "nb-desc"
#define OPT_TXFREET "txfreet"
#define OPT_BURST "burst"
#define OPT_QP "qp"
enum {
/* long options mapped to a short option */
OPT_NO_ZERO_COPY_NUM = 1,
OPT_BUF_SIZE_NUM,
OPT_FWD_MODE_NUM,
OPT_NB_DESC_NUM,
OPT_TXFREET_NUM,
OPT_BURST_NUM,
OPT_QP_NUM,
};
static const char short_options[] =
"i" /* interactive mode */
;
static const struct option lgopts[] = {
{OPT_BUF_SIZE, 1, NULL, OPT_BUF_SIZE_NUM },
{OPT_FWD_MODE, 1, NULL, OPT_FWD_MODE_NUM },
{OPT_NB_DESC, 1, NULL, OPT_NB_DESC_NUM },
{OPT_TXFREET, 1, NULL, OPT_TXFREET_NUM },
{OPT_BURST, 1, NULL, OPT_BURST_NUM },
{OPT_QP, 1, NULL, OPT_QP_NUM },
{0, 0, NULL, 0 }
};
static void
ntb_usage(const char *prgname)
{
printf("%s [EAL options] -- [options]\n"
"-i: run in interactive mode.\n"
"-qp=N: set number of queues as N (N > 0, default: 1).\n"
"--fwd-mode=N: set fwd mode (N: file-trans | rxonly | "
"txonly | iofwd, default: file-trans)\n"
"--buf-size=N: set mbuf dataroom size as N (0 < N < 65535,"
" default: 2048).\n"
"--nb-desc=N: set number of descriptors as N (%u <= N <= %u,"
" default: 1024).\n"
"--txfreet=N: set tx free thresh for NTB driver as N. (N >= 0)\n"
"--burst=N: set pkt burst as N (0 < N <= %u default: 32).\n",
prgname, NTB_MIN_DESC_SIZE, NTB_MAX_DESC_SIZE,
NTB_MAX_PKT_BURST);
}
static void
ntb_parse_args(int argc, char **argv)
{
char *prgname = argv[0], **argvopt = argv;
int opt, opt_idx, n, i;
while ((opt = getopt_long(argc, argvopt, short_options,
lgopts, &opt_idx)) != EOF) {
switch (opt) {
case 'i':
printf("Interactive-mode selected.\n");
interactive = 1;
break;
case OPT_QP_NUM:
n = atoi(optarg);
if (n > 0)
num_queues = n;
else
rte_exit(EXIT_FAILURE, "q must be > 0.\n");
break;
case OPT_BUF_SIZE_NUM:
n = atoi(optarg);
if (n > RTE_PKTMBUF_HEADROOM && n <= 0xFFFF)
ntb_buf_size = n;
else
rte_exit(EXIT_FAILURE, "buf-size must be > "
"%u and < 65536.\n",
RTE_PKTMBUF_HEADROOM);
break;
case OPT_FWD_MODE_NUM:
for (i = 0; i < MAX_FWD_MODE; i++) {
if (!strcmp(optarg, fwd_mode_s[i])) {
fwd_mode = i;
break;
}
}
if (i == MAX_FWD_MODE)
rte_exit(EXIT_FAILURE, "Unsupported mode. "
"(Should be: file-trans | rxonly | txonly "
"| iofwd)\n");
break;
case OPT_NB_DESC_NUM:
n = atoi(optarg);
if (n >= NTB_MIN_DESC_SIZE && n <= NTB_MAX_DESC_SIZE)
nb_desc = n;
else
rte_exit(EXIT_FAILURE, "nb-desc must be within"
" [%u, %u].\n", NTB_MIN_DESC_SIZE,
NTB_MAX_DESC_SIZE);
break;
case OPT_TXFREET_NUM:
n = atoi(optarg);
if (n >= 0)
tx_free_thresh = n;
else
rte_exit(EXIT_FAILURE, "txfreet must be"
" >= 0\n");
break;
case OPT_BURST_NUM:
n = atoi(optarg);
if (n > 0 && n <= NTB_MAX_PKT_BURST)
pkt_burst = n;
else
rte_exit(EXIT_FAILURE, "burst must be within "
"(0, %u].\n", NTB_MAX_PKT_BURST);
break;
default:
ntb_usage(prgname);
rte_exit(EXIT_FAILURE,
"Command line is incomplete or incorrect.\n");
break;
}
}
}
static void
ntb_mempool_mz_free(__rte_unused struct rte_mempool_memhdr *memhdr,
void *opaque)
{
const struct rte_memzone *mz = opaque;
}
static struct rte_mempool *
ntb_mbuf_pool_create(uint16_t mbuf_seg_size, uint32_t nb_mbuf,
struct ntb_dev_info ntb_info,
struct ntb_dev_config *ntb_conf,
unsigned int socket_id)
{
size_t mz_len, total_elt_sz, max_mz_len, left_sz;
struct rte_pktmbuf_pool_private mbp_priv;
char pool_name[RTE_MEMPOOL_NAMESIZE];
char mz_name[RTE_MEMZONE_NAMESIZE];
const struct rte_memzone *mz;
struct rte_mempool *mp;
uint64_t align;
uint32_t mz_id;
int ret;
snprintf(pool_name, sizeof(pool_name), "ntb_mbuf_pool_%u", socket_id);
mp = rte_mempool_create_empty(pool_name, nb_mbuf,
(mbuf_seg_size + sizeof(struct rte_mbuf)),
MEMPOOL_CACHE_SIZE,
sizeof(struct rte_pktmbuf_pool_private),
socket_id, 0);
if (mp == NULL)
return NULL;
printf("error setting mempool handler\n");
goto fail;
}
memset(&mbp_priv, 0, sizeof(mbp_priv));
mbp_priv.mbuf_data_room_size = mbuf_seg_size;
mbp_priv.mbuf_priv_size = 0;
rte_pktmbuf_pool_init(mp, &mbp_priv);
ntb_conf->mz_list = rte_zmalloc("ntb_memzone_list",
sizeof(struct rte_memzone *) *
ntb_info.mw_cnt, 0);
if (ntb_conf->mz_list == NULL)
goto fail;
/* Put ntb header on mw0. */
if (ntb_info.mw_size[0] < ntb_info.ntb_hdr_size) {
printf("mw0 (size: %" PRIu64 ") is not enough for ntb hdr"
" (size: %u)\n", ntb_info.mw_size[0],
ntb_info.ntb_hdr_size);
goto fail;
}
total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size;
left_sz = total_elt_sz * nb_mbuf;
for (mz_id = 0; mz_id < ntb_info.mw_cnt; mz_id++) {
/* If populated mbuf is enough, no need to reserve extra mz. */
if (!left_sz)
break;
snprintf(mz_name, sizeof(mz_name), "ntb_mw_%d", mz_id);
align = ntb_info.mw_size_align ? ntb_info.mw_size[mz_id] :
RTE_CACHE_LINE_SIZE;
/* Reserve ntb header space on memzone 0. */
max_mz_len = mz_id ? ntb_info.mw_size[mz_id] :
ntb_info.mw_size[mz_id] - ntb_info.ntb_hdr_size;
mz_len = left_sz <= max_mz_len ? left_sz :
(max_mz_len / total_elt_sz * total_elt_sz);
if (!mz_len)
continue;
mz = rte_memzone_reserve_aligned(mz_name, mz_len, socket_id,
if (mz == NULL) {
printf("Cannot allocate %" PRIu64 " aligned memzone"
" %u\n", align, mz_id);
goto fail;
}
left_sz -= mz_len;
/* Reserve ntb header space on memzone 0. */
if (mz_id)
ret = rte_mempool_populate_iova(mp, mz->addr, mz->iova,
mz->len, ntb_mempool_mz_free,
(void *)(uintptr_t)mz);
else
(void *)((size_t)mz->addr +
ntb_info.ntb_hdr_size),
mz->iova + ntb_info.ntb_hdr_size,
mz->len - ntb_info.ntb_hdr_size,
ntb_mempool_mz_free,
(void *)(uintptr_t)mz);
if (ret <= 0) {
return NULL;
}
ntb_conf->mz_list[mz_id] = mz;
}
if (left_sz) {
printf("mw space is not enough for mempool.\n");
goto fail;
}
ntb_conf->mz_num = mz_id;
return mp;
fail:
return NULL;
}
int
main(int argc, char **argv)
{
struct rte_eth_conf eth_pconf = eth_port_conf;
struct rte_rawdev_info ntb_rawdev_conf;
struct rte_rawdev_info ntb_rawdev_info;
struct rte_eth_dev_info ethdev_info;
struct rte_eth_rxconf eth_rx_conf;
struct rte_eth_txconf eth_tx_conf;
struct ntb_queue_conf ntb_q_conf;
struct ntb_dev_config ntb_conf;
struct ntb_dev_info ntb_info;
uint64_t ntb_link_status;
uint32_t nb_mbuf;
int ret, i;
signal(SIGINT, signal_handler);
signal(SIGTERM, signal_handler);
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Error with EAL initialization.\n");
if (rte_lcore_count() < 2)
rte_exit(EXIT_FAILURE, "Need at least 2 cores\n");
/* Find 1st ntb rawdev. */
for (i = 0; i < RTE_RAWDEV_MAX_DEVS; i++)
if (rte_rawdevs[i].driver_name &&
(strncmp(rte_rawdevs[i].driver_name, "raw_ntb",
NTB_DRV_NAME_LEN) == 0) && (rte_rawdevs[i].attached == 1))
break;
if (i == RTE_RAWDEV_MAX_DEVS)
rte_exit(EXIT_FAILURE, "Cannot find any ntb device.\n");
dev_id = i;
argc -= ret;
argv += ret;
ntb_parse_args(argc, argv);
rte_rawdev_set_attr(dev_id, NTB_QUEUE_SZ_NAME, nb_desc);
printf("Set queue size as %u.\n", nb_desc);
rte_rawdev_set_attr(dev_id, NTB_QUEUE_NUM_NAME, num_queues);
printf("Set queue number as %u.\n", num_queues);
ntb_rawdev_info.dev_private = (rte_rawdev_obj_t)(&ntb_info);
rte_rawdev_info_get(dev_id, &ntb_rawdev_info, sizeof(ntb_info));
nb_mbuf = nb_desc * num_queues * 2 * 2 + rte_lcore_count() *
MEMPOOL_CACHE_SIZE;
mbuf_pool = ntb_mbuf_pool_create(ntb_buf_size, nb_mbuf, ntb_info,
&ntb_conf, rte_socket_id());
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot create mbuf pool.\n");
ntb_conf.num_queues = num_queues;
ntb_conf.queue_size = nb_desc;
ntb_rawdev_conf.dev_private = (rte_rawdev_obj_t)(&ntb_conf);
ret = rte_rawdev_configure(dev_id, &ntb_rawdev_conf, sizeof(ntb_conf));
if (ret)
rte_exit(EXIT_FAILURE, "Can't config ntb dev: err=%d, "
"port=%u\n", ret, dev_id);
ntb_q_conf.tx_free_thresh = tx_free_thresh;
ntb_q_conf.nb_desc = nb_desc;
ntb_q_conf.rx_mp = mbuf_pool;
for (i = 0; i < num_queues; i++) {
/* Setup rawdev queue */
ret = rte_rawdev_queue_setup(dev_id, i, &ntb_q_conf,
sizeof(ntb_q_conf));
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Failed to setup ntb queue %u.\n", i);
}
/* Waiting for peer dev up at most 100s.*/
printf("Checking ntb link status...\n");
for (i = 0; i < 1000; i++) {
rte_rawdev_get_attr(dev_id, NTB_LINK_STATUS_NAME,
&ntb_link_status);
if (ntb_link_status) {
printf("Peer dev ready, ntb link up.\n");
break;
}
}
rte_rawdev_get_attr(dev_id, NTB_LINK_STATUS_NAME, &ntb_link_status);
if (ntb_link_status == 0)
printf("Expire 100s. Link is not up. Please restart app.\n");
ret = rte_rawdev_start(dev_id);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_rawdev_start: err=%d, port=%u\n",
ret, dev_id);
/* Find 1st ethdev */
eth_port_id = rte_eth_find_next(0);
if (eth_port_id < RTE_MAX_ETHPORTS) {
rte_eth_dev_info_get(eth_port_id, &ethdev_info);
ret = rte_eth_dev_configure(eth_port_id, num_queues,
num_queues, &eth_pconf);
if (ret)
rte_exit(EXIT_FAILURE, "Can't config ethdev: err=%d, "
"port=%u\n", ret, eth_port_id);
eth_rx_conf = ethdev_info.default_rxconf;
eth_rx_conf.offloads = eth_pconf.rxmode.offloads;
eth_tx_conf = ethdev_info.default_txconf;
eth_tx_conf.offloads = eth_pconf.txmode.offloads;
/* Setup ethdev queue if ethdev exists */
for (i = 0; i < num_queues; i++) {
ret = rte_eth_rx_queue_setup(eth_port_id, i, nb_desc,
rte_eth_dev_socket_id(eth_port_id),
&eth_rx_conf, mbuf_pool);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Failed to setup eth rxq %u.\n", i);
ret = rte_eth_tx_queue_setup(eth_port_id, i, nb_desc,
rte_eth_dev_socket_id(eth_port_id),
&eth_tx_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Failed to setup eth txq %u.\n", i);
}
ret = rte_eth_dev_start(eth_port_id);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, "
"port=%u\n", ret, eth_port_id);
}
/* initialize port stats */
memset(&ntb_port_stats, 0, sizeof(ntb_port_stats));
/* Set default fwd mode if user doesn't set it. */
if (fwd_mode == MAX_FWD_MODE && eth_port_id < RTE_MAX_ETHPORTS) {
printf("Set default fwd mode as iofwd.\n");
fwd_mode = IOFWD;
}
if (fwd_mode == MAX_FWD_MODE) {
printf("Set default fwd mode as file-trans.\n");
fwd_mode = FILE_TRANS;
}
if (interactive) {
sleep(1);
prompt();
} else {
start_pkt_fwd();
}
/* clean up the EAL */
return 0;
}