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/*
* Copyright (C) 2016-2025 Red Hat, Inc. All rights reserved.
*
* Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
*
* This software licensed under GPL-2.0+
*/
#include "config.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
#include "libknet.h"
#include "internals.h"
#include "netutils.h"
#include "test-common.h"
static int private_data;
static void sock_notify(void *pvt_data,
int datafd,
int8_t channel,
uint8_t tx_rx,
int error,
int errorno)
{
return;
}
static int dhost_filter(void *pvt_data,
const unsigned char *outdata,
ssize_t outdata_len,
uint8_t tx_rx,
knet_node_id_t this_host_id,
knet_node_id_t src_host_id,
int8_t *dst_channel,
knet_node_id_t *dst_host_ids,
size_t *dst_host_ids_entries)
{
dst_host_ids[0] = 1;
*dst_host_ids_entries = 1;
return 0;
}
static void test(void)
{
knet_handle_t knet_h1, knet_h[2];
int logfds[2];
int datafd = 0;
int8_t channel = 0;
struct knet_link_status link_status;
char send_buff[KNET_MAX_PACKET_SIZE];
char recv_buff[KNET_MAX_PACKET_SIZE];
ssize_t send_len = 0;
int recv_len = 0;
int savederrno;
int res;
struct sockaddr_storage lo;
memset(send_buff, 0, sizeof(send_buff));
setup_logpipes(logfds);
knet_h1 = knet_handle_start(logfds, KNET_LOG_DEBUG, knet_h);
flush_logs(logfds[0], stdout);
printf("Test configuring multiple links with loopback\n");
FAIL_ON_ERR(knet_handle_enable_sock_notify(knet_h1, &private_data, sock_notify));
datafd = 0;
channel = -1;
FAIL_ON_ERR(knet_handle_add_datafd(knet_h1, &datafd, &channel));
FAIL_ON_ERR(knet_host_add(knet_h1, 1));
FAIL_ON_ERR(_knet_link_set_config(knet_h1, 1, 0, KNET_TRANSPORT_LOOPBACK, 0, AF_INET, 0, &lo));
if (_knet_link_set_config(knet_h1, 1, 1, KNET_TRANSPORT_LOOPBACK, 0, AF_INET, 0, &lo) == 0) {
printf("Managed to configure two LOOPBACK links - this is wrong\n");
CLEAN_EXIT(FAIL);
}
printf("Test configuring UDP link after loopback\n");
if (_knet_link_set_config(knet_h1, 1, 1, KNET_TRANSPORT_UDP, 0, AF_INET, 0, &lo) == 0) {
printf("Managed to configure UDP and LOOPBACK links together: %s\n", strerror(errno));
CLEAN_EXIT(FAIL);
}
printf("Test configuring UDP link before loopback\n");
FAIL_ON_ERR(knet_link_clear_config(knet_h1, 1, 0));
FAIL_ON_ERR(_knet_link_set_config(knet_h1, 1, 0, KNET_TRANSPORT_UDP, 0, AF_INET, 0, &lo));
if (_knet_link_set_config(knet_h1, 1, 1, KNET_TRANSPORT_LOOPBACK, 0, AF_INET, 0, &lo) == 0) {
printf("Managed to configure LOOPBACK link after UDP: %s\n", strerror(errno));
CLEAN_EXIT(FAIL);
}
printf("Test knet_send with valid data\n");
FAIL_ON_ERR(knet_handle_enable_access_lists(knet_h1, 1));
FAIL_ON_ERR(knet_link_clear_config(knet_h1, 1, 0));
FAIL_ON_ERR(_knet_link_set_config(knet_h1, 1, 0, KNET_TRANSPORT_LOOPBACK, 0, AF_INET, 0, &lo));
FAIL_ON_ERR(knet_link_set_enable(knet_h1, 1, 0, 1));
FAIL_ON_ERR(knet_handle_setfwd(knet_h1, 1));
FAIL_ON_ERR(wait_for_host(knet_h1, 1, 10, logfds[0], stdout));
send_len = knet_send(knet_h1, send_buff, KNET_MAX_PACKET_SIZE, channel);
if (send_len <= 0) {
printf("knet_send failed: %s\n", strerror(errno));
CLEAN_EXIT(FAIL);
}
if (send_len != sizeof(send_buff)) {
printf("knet_send sent only %zd bytes: %s\n", send_len, strerror(errno));
CLEAN_EXIT(FAIL);
}
FAIL_ON_ERR(knet_handle_setfwd(knet_h1, 0));
FAIL_ON_ERR(wait_for_packet(knet_h1, 10, datafd, logfds[0], stdout))
recv_len = knet_recv(knet_h1, recv_buff, KNET_MAX_PACKET_SIZE, channel);
savederrno = errno;
if (recv_len != send_len) {
printf("knet_recv received only %d bytes: %s (errno: %d)\n", recv_len, strerror(errno), errno);
if ((is_helgrind()) && (recv_len == -1) && (savederrno == EAGAIN)) {
printf("helgrind exception. this is normal due to possible timeouts\n");
CLEAN_EXIT(PASS);
}
CLEAN_EXIT(FAIL);
}
if (memcmp(recv_buff, send_buff, KNET_MAX_PACKET_SIZE)) {
printf("recv and send buffers are different!\n");
CLEAN_EXIT(FAIL);
}
/* A sanity check on the stats */
FAIL_ON_ERR(knet_link_get_status(knet_h1, 1, 0, &link_status, sizeof(link_status)));
if (link_status.stats.tx_data_packets != 1 ||
link_status.stats.rx_data_packets != 0 ||
link_status.stats.tx_data_bytes != KNET_MAX_PACKET_SIZE) {
printf("stats look wrong: tx_packets: %" PRIu64 " (%" PRIu64 " bytes), rx_packets: %" PRIu64 " (%" PRIu64 " bytes)\n",
link_status.stats.tx_data_packets,
link_status.stats.tx_data_bytes,
link_status.stats.rx_data_packets,
link_status.stats.rx_data_bytes);
}
printf("Test knet_send with only localhost\n");
FAIL_ON_ERR(knet_handle_setfwd(knet_h1, 1));
FAIL_ON_ERR(knet_handle_enable_filter(knet_h1, NULL, dhost_filter));
send_len = knet_send(knet_h1, send_buff, KNET_MAX_PACKET_SIZE, channel);
if (send_len <= 0) {
printf("knet_send failed: %s\n", strerror(errno));
CLEAN_EXIT(FAIL);
}
if (send_len != sizeof(send_buff)) {
printf("knet_send sent only %zd bytes: %s\n", send_len, strerror(errno));
CLEAN_EXIT(FAIL);
}
FAIL_ON_ERR(knet_handle_setfwd(knet_h1, 0));
FAIL_ON_ERR(wait_for_packet(knet_h1, 10, datafd, logfds[0], stdout));
recv_len = knet_recv(knet_h1, recv_buff, KNET_MAX_PACKET_SIZE, channel);
savederrno = errno;
if (recv_len != send_len) {
printf("knet_recv received only %d bytes: %s (errno: %d)\n", recv_len, strerror(errno), errno);
if ((is_helgrind()) && (recv_len == -1) && (savederrno == EAGAIN)) {
printf("helgrind exception. this is normal due to possible timeouts\n");
CLEAN_EXIT(PASS);
}
CLEAN_EXIT(FAIL);
}
if (memcmp(recv_buff, send_buff, KNET_MAX_PACKET_SIZE)) {
printf("recv and send buffers are different!\n");
CLEAN_EXIT(FAIL);
}
CLEAN_EXIT(CONTINUE);
}
int main(int argc, char *argv[])
{
test();
return PASS;
}
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