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* Copyright (c) 2019 Intel Corporation.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <logging/log.h>
LOG_MODULE_REGISTER(net_pkt_sock_sample, LOG_LEVEL_DBG);
#include <zephyr.h>
#include <errno.h>
#include <stdio.h>
#include <net/socket.h>
#include <net/ethernet.h>
#define STACK_SIZE 1024
#define THREAD_PRIORITY K_PRIO_COOP(8)
#define RECV_BUFFER_SIZE 1280
#define RAW_WAIT K_SECONDS(5)
static struct k_sem quit_lock;
struct packet_data {
int sock;
char recv_buffer[RECV_BUFFER_SIZE];
struct k_delayed_work send;
};
static struct packet_data packet;
static void process_packet(void);
static void send_packet(void);
K_THREAD_DEFINE(packet_thread_id, STACK_SIZE,
process_packet, NULL, NULL, NULL,
THREAD_PRIORITY, 0, K_FOREVER);
/* Generated by http://www.lipsum.com/
* 2 paragraphs, 179 words, 1160 bytes of Lorem Ipsum
*/
const char lorem_ipsum[] =
"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque "
"sodales lorem lorem, sed congue enim vehicula a. Sed finibus diam sed "
"odio ultrices pharetra. Nullam dictum arcu ultricies turpis congue, "
"vel venenatis turpis venenatis. Nam tempus arcu eros, ac congue libero "
"tristique congue. Proin velit lectus, euismod sit amet quam in, "
"maximus condimentum urna. Cras vel erat luctus, mattis orci ut, varius "
"urna. Nam eu lobortis velit."
"\n"
"Nullam sit amet diam vel odio sodales cursus vehicula eu arcu. Proin "
"fringilla, enim nec consectetur mollis, lorem orci interdum nisi, "
"vitae suscipit nisi mauris eu mi. Proin diam enim, mollis ac rhoncus "
"vitae, placerat et eros. Suspendisse convallis, ipsum nec rhoncus "
"aliquam, ex augue ultrices nisl, id aliquet mi diam quis ante. "
"Pellentesque venenatis ornare ultrices. Quisque et porttitor lectus. "
"Ut venenatis nunc et urna imperdiet porttitor non laoreet massa. Donec "
"eleifend eros in mi sagittis egestas. Sed et mi nunc. Nunc vulputate, "
"mauris non ullamcorper viverra, lorem nulla vulputate diam, et congue "
"dui velit non erat. Duis interdum leo et ipsum tempor consequat. In "
"faucibus enim quis purus vulputate nullam."
"\n";
static void quit(void)
{
k_sem_give(&quit_lock);
}
static int start_packet_socket(void)
{
struct sockaddr_ll dst;
int ret;
packet.sock = socket(AF_PACKET, SOCK_RAW, ETH_P_ALL);
if (packet.sock < 0) {
LOG_ERR("Failed to create RAW socket : %d", errno);
return -errno;
}
dst.sll_ifindex = net_if_get_by_iface(net_if_get_default());
dst.sll_family = AF_PACKET;
ret = bind(packet.sock, (const struct sockaddr *)&dst,
sizeof(struct sockaddr_ll));
if (ret < 0) {
LOG_ERR("Failed to bind packet socket : %d", errno);
return -errno;
}
return 0;
}
static void wait_send(struct k_work *work)
{
/* Send a new packet at this point */
send_packet();
}
static void send_packet(void)
{
struct sockaddr_ll dst;
u8_t send = 100U;
int ret;
dst.sll_ifindex = net_if_get_by_iface(net_if_get_default());
/* Sending dummy data */
ret = sendto(packet.sock, lorem_ipsum, send, 0,
(const struct sockaddr *)&dst,
sizeof(struct sockaddr_ll));
if (ret < 0) {
LOG_ERR("Failed to send, errno %d", errno);
} else {
LOG_DBG("Sent %d bytes", send);
}
k_delayed_work_submit(&packet.send, RAW_WAIT);
}
static int process_packet_socket(void)
{
int ret = 0;
int received;
LOG_INF("Waiting for packets ...");
send_packet();
do {
received = recv(packet.sock, packet.recv_buffer,
sizeof(packet.recv_buffer), 0);
if (received < 0) {
LOG_ERR("RAW : recv error %d", errno);
ret = -errno;
break;
}
LOG_DBG("Received %d bytes", received);
} while (true);
return ret;
}
static void process_packet(void)
{
int ret;
ret = start_packet_socket();
if (ret < 0) {
quit();
return;
}
while (ret == 0) {
ret = process_packet_socket();
if (ret < 0) {
quit();
return;
}
}
}
void main(void)
{
k_sem_init(&quit_lock, 0, UINT_MAX);
k_delayed_work_init(&packet.send, wait_send);
LOG_INF("Packet socket sample is running");
k_thread_start(packet_thread_id);
k_sem_take(&quit_lock, K_FOREVER);
LOG_INF("Stopping...");
k_thread_abort(packet_thread_id);
k_delayed_work_cancel(&packet.send);
if (packet.sock > 0) {
(void)close(packet.sock);
}
}
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