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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 | /* * Copyright (c) 2019 Intel Corporation. * * SPDX-License-Identifier: Apache-2.0 */ #include <zephyr/logging/log.h> LOG_MODULE_REGISTER(net_pkt_sock_sample, LOG_LEVEL_DBG); #include <zephyr/kernel.h> #include <errno.h> #include <stdio.h> #include <zephyr/net/socket.h> #include <zephyr/net/ethernet.h> #include <zephyr/net/net_mgmt.h> #define STACK_SIZE 1024 #if defined(CONFIG_NET_TC_THREAD_COOPERATIVE) #define THREAD_PRIORITY K_PRIO_COOP(CONFIG_NUM_COOP_PRIORITIES - 1) #else #define THREAD_PRIORITY K_PRIO_PREEMPT(8) #endif #define RECV_BUFFER_SIZE 1280 #define WAIT_TIME CONFIG_NET_SAMPLE_SEND_WAIT_TIME #define FLOOD (CONFIG_NET_SAMPLE_SEND_WAIT_TIME ? 0 : 1) static struct k_sem quit_lock; struct packet_data { int send_sock; int recv_sock; char recv_buffer[RECV_BUFFER_SIZE]; }; static struct packet_data packet; static bool finish; static K_SEM_DEFINE(iface_up, 0, 1); static void recv_packet(void); static void send_packet(void); K_THREAD_DEFINE(receiver_thread_id, STACK_SIZE, recv_packet, NULL, NULL, NULL, THREAD_PRIORITY, 0, -1); K_THREAD_DEFINE(sender_thread_id, STACK_SIZE, send_packet, NULL, NULL, NULL, THREAD_PRIORITY, 0, -1); /* 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_socket(int *sock) { struct sockaddr_ll dst = { 0 }; int ret; *sock = socket(AF_PACKET, IS_ENABLED(CONFIG_NET_SAMPLE_ENABLE_PACKET_DGRAM) ? SOCK_DGRAM : SOCK_RAW, ETH_P_ALL); if (*sock < 0) { LOG_ERR("Failed to create %s socket : %d", IS_ENABLED(CONFIG_NET_SAMPLE_ENABLE_PACKET_DGRAM) ? "DGRAM" : "RAW", errno); return -errno; } dst.sll_ifindex = net_if_get_by_iface(net_if_get_default()); dst.sll_family = AF_PACKET; ret = bind(*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 int recv_packet_socket(struct packet_data *packet) { int ret = 0; int received; LOG_INF("Waiting for packets ..."); do { if (finish) { ret = -1; break; } received = recv(packet->recv_sock, packet->recv_buffer, sizeof(packet->recv_buffer), 0); if (received < 0) { if (errno == EAGAIN) { continue; } LOG_ERR("RAW : recv error %d", errno); ret = -errno; break; } LOG_DBG("Received %d bytes", received); } while (true); return ret; } static void recv_packet(void) { int ret; struct timeval timeo_optval = { .tv_sec = 1, .tv_usec = 0, }; ret = start_socket(&packet.recv_sock); if (ret < 0) { quit(); return; } ret = setsockopt(packet.recv_sock, SOL_SOCKET, SO_RCVTIMEO, &timeo_optval, sizeof(timeo_optval)); if (ret < 0) { quit(); return; } while (ret == 0) { ret = recv_packet_socket(&packet); if (ret < 0) { quit(); return; } } } static int send_packet_socket(struct packet_data *packet) { struct sockaddr_ll dst = { 0 }; size_t send = 100U; int ret; dst.sll_ifindex = net_if_get_by_iface(net_if_get_default()); if (IS_ENABLED(CONFIG_NET_SAMPLE_ENABLE_PACKET_DGRAM)) { dst.sll_halen = sizeof(struct net_eth_addr); /* FIXME: assume IP data atm */ dst.sll_protocol = htons(ETH_P_IP); ret = net_bytes_from_str( dst.sll_addr, dst.sll_halen, CONFIG_NET_SAMPLE_DESTINATION_ADDR); if (ret < 0) { LOG_ERR("Invalid MAC address '%s'", CONFIG_NET_SAMPLE_DESTINATION_ADDR); } } do { if (finish) { ret = -1; break; } /* Sending dummy data */ ret = sendto(packet->send_sock, lorem_ipsum, send, 0, (const struct sockaddr *)&dst, sizeof(struct sockaddr_ll)); if (ret < 0) { LOG_ERR("Failed to send, errno %d", errno); break; } else { if (!FLOOD) { LOG_DBG("Sent %zd bytes", send); } } /* If we have received any data, flush it here in order to * not to leak memory in IP stack. */ do { static char recv_buffer[RECV_BUFFER_SIZE]; ret = recv(packet->send_sock, recv_buffer, sizeof(recv_buffer), MSG_DONTWAIT); } while (ret > 0); if (!FLOOD) { k_msleep(WAIT_TIME); } } while (true); return ret; } static void send_packet(void) { int ret; ret = start_socket(&packet.send_sock); if (ret < 0) { quit(); return; } while (ret == 0) { ret = send_packet_socket(&packet); if (ret < 0) { quit(); return; } } } static void iface_up_handler(struct net_mgmt_event_callback *cb, uint32_t mgmt_event, struct net_if *iface) { if (mgmt_event == NET_EVENT_IF_UP) { k_sem_give(&iface_up); } } static void wait_for_interface(void) { struct net_if *iface = net_if_get_default(); struct net_mgmt_event_callback iface_up_cb; if (net_if_is_up(iface)) { return; } net_mgmt_init_event_callback(&iface_up_cb, iface_up_handler, NET_EVENT_IF_UP); net_mgmt_add_event_callback(&iface_up_cb); /* Wait for the interface to come up. */ k_sem_take(&iface_up, K_FOREVER); net_mgmt_del_event_callback(&iface_up_cb); } int main(void) { k_sem_init(&quit_lock, 0, K_SEM_MAX_LIMIT); wait_for_interface(); LOG_INF("Packet socket sample is running"); k_thread_start(receiver_thread_id); k_thread_start(sender_thread_id); k_sem_take(&quit_lock, K_FOREVER); LOG_INF("Stopping..."); finish = true; k_thread_join(receiver_thread_id, K_FOREVER); k_thread_join(sender_thread_id, K_FOREVER); if (packet.recv_sock >= 0) { (void)close(packet.recv_sock); } if (packet.send_sock >= 0) { (void)close(packet.send_sock); } return 0; } |