NetworkSocketAPI / LWIPInterface

Implementation of the NetworkSocketAPI for LWIP

Dependencies:   lwip-eth lwip-sys lwip

Dependents:   HelloLWIPInterface HelloLWIPInterfaceNonBlocking LWIPInterfaceTests SimpleHTTPExample ... more

LWIPInterface.cpp@14:67b325c56cde, 2016-04-05 (annotated)

Committer:
geky
Date:
Tue Apr 05 23:38:36 2016 +0000
Revision:
14:67b325c56cde
Parent:
13:57d9e1721826
Child:
15:0d8d1dafe064
Fixed issue with offset file-descriptors

Who changed what in which revision?

UserRevisionLine numberNew contents of line
geky 1:2fbcfc9c12dd 1 /* LWIP implementation of NetworkInterfaceAPI
geky 1:2fbcfc9c12dd 2 * Copyright (c) 2015 ARM Limited
geky 1:2fbcfc9c12dd 3 *
geky 1:2fbcfc9c12dd 4 * Licensed under the Apache License, Version 2.0 (the "License");
geky 1:2fbcfc9c12dd 5 * you may not use this file except in compliance with the License.
geky 1:2fbcfc9c12dd 6 * You may obtain a copy of the License at
geky 1:2fbcfc9c12dd 7 *
geky 1:2fbcfc9c12dd 8 * http://www.apache.org/licenses/LICENSE-2.0
geky 1:2fbcfc9c12dd 9 *
geky 1:2fbcfc9c12dd 10 * Unless required by applicable law or agreed to in writing, software
geky 1:2fbcfc9c12dd 11 * distributed under the License is distributed on an "AS IS" BASIS,
geky 1:2fbcfc9c12dd 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
geky 1:2fbcfc9c12dd 13 * See the License for the specific language governing permissions and
geky 1:2fbcfc9c12dd 14 * limitations under the License.
geky 1:2fbcfc9c12dd 15 */
sam_grove 8:cef01e812975 16
Christopher Haster 13:57d9e1721826 17 #include "mbed.h"
Christopher Haster 2:7fb7e78cb17f 18 #include "LWIPInterface.h"
Christopher Haster 2:7fb7e78cb17f 19
Christopher Haster 2:7fb7e78cb17f 20 #include "lwip/inet.h"
Christopher Haster 2:7fb7e78cb17f 21 #include "lwip/netif.h"
Christopher Haster 2:7fb7e78cb17f 22 #include "lwip/dhcp.h"
Christopher Haster 2:7fb7e78cb17f 23 #include "lwip/tcpip.h"
Christopher Haster 2:7fb7e78cb17f 24 #include "lwip/sockets.h"
Christopher Haster 2:7fb7e78cb17f 25 #include "lwip/netdb.h"
Christopher Haster 2:7fb7e78cb17f 26 #include "netif/etharp.h"
Christopher Haster 2:7fb7e78cb17f 27 #include "eth_arch.h"
Christopher Haster 2:7fb7e78cb17f 28
Christopher Haster 2:7fb7e78cb17f 29 /* TCP/IP and Network Interface Initialisation */
Christopher Haster 2:7fb7e78cb17f 30 static struct netif netif;
Christopher Haster 2:7fb7e78cb17f 31
Christopher Haster 13:57d9e1721826 32 static char ip_addr[SocketAddress::IP_SIZE] = "\0";
Christopher Haster 13:57d9e1721826 33 static char mac_addr[200] = "\0";
Christopher Haster 2:7fb7e78cb17f 34
Christopher Haster 2:7fb7e78cb17f 35 static Semaphore tcpip_inited(0);
Christopher Haster 2:7fb7e78cb17f 36 static Semaphore netif_linked(0);
Christopher Haster 2:7fb7e78cb17f 37 static Semaphore netif_up(0);
Christopher Haster 2:7fb7e78cb17f 38
sam_grove 8:cef01e812975 39 static void tcpip_init_done(void *)
sam_grove 8:cef01e812975 40 {
Christopher Haster 2:7fb7e78cb17f 41 tcpip_inited.release();
Christopher Haster 2:7fb7e78cb17f 42 }
Christopher Haster 2:7fb7e78cb17f 43
sam_grove 8:cef01e812975 44 static void netif_link_callback(struct netif *netif)
sam_grove 8:cef01e812975 45 {
Christopher Haster 2:7fb7e78cb17f 46 if (netif_is_link_up(netif)) {
Christopher Haster 2:7fb7e78cb17f 47 netif_linked.release();
Christopher Haster 2:7fb7e78cb17f 48 }
Christopher Haster 2:7fb7e78cb17f 49 }
Christopher Haster 2:7fb7e78cb17f 50
sam_grove 8:cef01e812975 51 static void netif_status_callback(struct netif *netif)
sam_grove 8:cef01e812975 52 {
Christopher Haster 2:7fb7e78cb17f 53 if (netif_is_up(netif)) {
geky 5:2c7d2186543c 54 strcpy(ip_addr, inet_ntoa(netif->ip_addr));
Christopher Haster 2:7fb7e78cb17f 55 netif_up.release();
Christopher Haster 2:7fb7e78cb17f 56 }
Christopher Haster 2:7fb7e78cb17f 57 }
Christopher Haster 2:7fb7e78cb17f 58
sam_grove 8:cef01e812975 59 static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw)
sam_grove 8:cef01e812975 60 {
Christopher Haster 2:7fb7e78cb17f 61 tcpip_init(tcpip_init_done, NULL);
Christopher Haster 2:7fb7e78cb17f 62 tcpip_inited.wait();
sam_grove 8:cef01e812975 63
Christopher Haster 2:7fb7e78cb17f 64 memset((void*) &netif, 0, sizeof(netif));
Christopher Haster 2:7fb7e78cb17f 65 netif_add(&netif, ipaddr, netmask, gw, NULL, eth_arch_enetif_init, tcpip_input);
Christopher Haster 2:7fb7e78cb17f 66 netif_set_default(&netif);
sam_grove 8:cef01e812975 67
Christopher Haster 2:7fb7e78cb17f 68 netif_set_link_callback (&netif, netif_link_callback);
Christopher Haster 2:7fb7e78cb17f 69 netif_set_status_callback(&netif, netif_status_callback);
Christopher Haster 2:7fb7e78cb17f 70 }
Christopher Haster 2:7fb7e78cb17f 71
sam_grove 8:cef01e812975 72 static void set_mac_address(void)
sam_grove 8:cef01e812975 73 {
Christopher Haster 2:7fb7e78cb17f 74 #if (MBED_MAC_ADDRESS_SUM != MBED_MAC_ADDR_INTERFACE)
Christopher Haster 2:7fb7e78cb17f 75 snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", MBED_MAC_ADDR_0, MBED_MAC_ADDR_1, MBED_MAC_ADDR_2,
Christopher Haster 2:7fb7e78cb17f 76 MBED_MAC_ADDR_3, MBED_MAC_ADDR_4, MBED_MAC_ADDR_5);
Christopher Haster 2:7fb7e78cb17f 77 #else
Christopher Haster 2:7fb7e78cb17f 78 char mac[6];
Christopher Haster 2:7fb7e78cb17f 79 mbed_mac_address(mac);
Christopher Haster 2:7fb7e78cb17f 80 snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
Christopher Haster 2:7fb7e78cb17f 81 #endif
Christopher Haster 2:7fb7e78cb17f 82 }
Christopher Haster 2:7fb7e78cb17f 83
Christopher Haster 13:57d9e1721826 84
Christopher Haster 13:57d9e1721826 85 int LWIPInterface::connect()
Christopher Haster 2:7fb7e78cb17f 86 {
Christopher Haster 2:7fb7e78cb17f 87 // Set up network
Christopher Haster 2:7fb7e78cb17f 88 set_mac_address();
geky 5:2c7d2186543c 89 init_netif(0, 0, 0);
Christopher Haster 2:7fb7e78cb17f 90
Christopher Haster 2:7fb7e78cb17f 91 // Connect to network
Christopher Haster 2:7fb7e78cb17f 92 eth_arch_enable_interrupts();
Christopher Haster 2:7fb7e78cb17f 93
geky 5:2c7d2186543c 94 dhcp_start(&netif);
sam_grove 8:cef01e812975 95
geky 5:2c7d2186543c 96 // Wait for an IP Address
geky 5:2c7d2186543c 97 // -1: error, 0: timeout
Christopher Haster 13:57d9e1721826 98 if (netif_up.wait(1500) < 0) {
Christopher Haster 13:57d9e1721826 99 return NSAPI_ERROR_DHCP_FAILURE;
Christopher Haster 2:7fb7e78cb17f 100 }
Christopher Haster 2:7fb7e78cb17f 101
Christopher Haster 2:7fb7e78cb17f 102 return 0;
Christopher Haster 2:7fb7e78cb17f 103 }
Christopher Haster 2:7fb7e78cb17f 104
Christopher Haster 13:57d9e1721826 105 int LWIPInterface::disconnect()
Christopher Haster 2:7fb7e78cb17f 106 {
geky 5:2c7d2186543c 107 dhcp_release(&netif);
geky 5:2c7d2186543c 108 dhcp_stop(&netif);
sam_grove 8:cef01e812975 109
Christopher Haster 2:7fb7e78cb17f 110 eth_arch_disable_interrupts();
sam_grove 8:cef01e812975 111
Christopher Haster 2:7fb7e78cb17f 112 return 0;
Christopher Haster 2:7fb7e78cb17f 113 }
Christopher Haster 2:7fb7e78cb17f 114
Christopher Haster 13:57d9e1721826 115 const char *LWIPInterface::get_ip_address()
geky 5:2c7d2186543c 116 {
geky 5:2c7d2186543c 117 return ip_addr;
geky 5:2c7d2186543c 118 }
geky 5:2c7d2186543c 119
Christopher Haster 13:57d9e1721826 120 const char *LWIPInterface::get_mac_address()
Christopher Haster 2:7fb7e78cb17f 121 {
Christopher Haster 2:7fb7e78cb17f 122 return mac_addr;
Christopher Haster 2:7fb7e78cb17f 123 }
Christopher Haster 2:7fb7e78cb17f 124
Christopher Haster 13:57d9e1721826 125 void *LWIPInterface::socket_create(protocol_t proto)
Christopher Haster 2:7fb7e78cb17f 126 {
Christopher Haster 13:57d9e1721826 127 int type = (proto == NetworkInterface::UDP) ? SOCK_DGRAM : SOCK_STREAM;
Christopher Haster 2:7fb7e78cb17f 128 int fd = lwip_socket(AF_INET, type, 0);
Christopher Haster 2:7fb7e78cb17f 129 if (fd < 0) {
Christopher Haster 2:7fb7e78cb17f 130 return 0;
Christopher Haster 2:7fb7e78cb17f 131 }
Christopher Haster 2:7fb7e78cb17f 132
geky 14:67b325c56cde 133 return (void *)(fd+1);
Christopher Haster 2:7fb7e78cb17f 134 }
Christopher Haster 2:7fb7e78cb17f 135
Christopher Haster 13:57d9e1721826 136 void LWIPInterface::socket_destroy(void *handle)
Christopher Haster 2:7fb7e78cb17f 137 {
geky 14:67b325c56cde 138 int fd = (int)handle-1;
Christopher Haster 13:57d9e1721826 139 lwip_close(fd);
Christopher Haster 13:57d9e1721826 140
Christopher Haster 13:57d9e1721826 141 }
Christopher Haster 2:7fb7e78cb17f 142
Christopher Haster 13:57d9e1721826 143 int LWIPInterface::socket_set_option(void *handle, int optname, const void *optval, unsigned optlen)
Christopher Haster 13:57d9e1721826 144 {
geky 14:67b325c56cde 145 int fd = (int)handle-1;
geky 14:67b325c56cde 146 return lwip_setsockopt(fd, SOL_SOCKET, optname, optval, (socklen_t)optlen);
Christopher Haster 13:57d9e1721826 147 }
Christopher Haster 13:57d9e1721826 148
Christopher Haster 13:57d9e1721826 149 int LWIPInterface::socket_get_option(void *handle, int optname, void *optval, unsigned *optlen)
Christopher Haster 13:57d9e1721826 150 {
geky 14:67b325c56cde 151 int fd = (int)handle-1;
geky 14:67b325c56cde 152 return lwip_getsockopt(fd, SOL_SOCKET, optname, optval, (socklen_t*)optlen);
Christopher Haster 2:7fb7e78cb17f 153 }
Christopher Haster 2:7fb7e78cb17f 154
Christopher Haster 13:57d9e1721826 155 int LWIPInterface::socket_bind(void *handle, int port)
Christopher Haster 13:57d9e1721826 156 {
Christopher Haster 13:57d9e1721826 157 return NSAPI_ERROR_UNSUPPORTED;
Christopher Haster 13:57d9e1721826 158 }
Christopher Haster 2:7fb7e78cb17f 159
Christopher Haster 13:57d9e1721826 160 int LWIPInterface::socket_listen(void *handle, int backlog)
Christopher Haster 2:7fb7e78cb17f 161 {
Christopher Haster 13:57d9e1721826 162 return NSAPI_ERROR_UNSUPPORTED;
Christopher Haster 13:57d9e1721826 163 }
Christopher Haster 2:7fb7e78cb17f 164
Christopher Haster 13:57d9e1721826 165 int LWIPInterface::socket_connect(void *handle, const SocketAddress &addr)
Christopher Haster 13:57d9e1721826 166 {
geky 14:67b325c56cde 167 int fd = (int)handle-1;
Christopher Haster 13:57d9e1721826 168 struct sockaddr_in sa;
Christopher Haster 13:57d9e1721826 169 memset(&sa, 0, sizeof sa);
Christopher Haster 13:57d9e1721826 170 inet_aton(addr.get_ip_address(), &sa.sin_addr);
Christopher Haster 13:57d9e1721826 171 sa.sin_family = AF_INET;
Christopher Haster 13:57d9e1721826 172 sa.sin_port = htons(addr.get_port());
Christopher Haster 13:57d9e1721826 173
Christopher Haster 13:57d9e1721826 174 if (lwip_connect(fd, (const struct sockaddr *)&sa, sizeof sa) < 0) {
Christopher Haster 13:57d9e1721826 175 return NSAPI_ERROR_NO_CONNECTION;
Christopher Haster 2:7fb7e78cb17f 176 }
Christopher Haster 2:7fb7e78cb17f 177
Christopher Haster 2:7fb7e78cb17f 178 return 0;
Christopher Haster 2:7fb7e78cb17f 179 }
Christopher Haster 13:57d9e1721826 180
Christopher Haster 13:57d9e1721826 181 bool LWIPInterface::socket_is_connected(void *handle)
Christopher Haster 13:57d9e1721826 182 {
Christopher Haster 13:57d9e1721826 183 return true;
Christopher Haster 13:57d9e1721826 184 }
Christopher Haster 2:7fb7e78cb17f 185
Christopher Haster 13:57d9e1721826 186 int LWIPInterface::socket_accept(void *handle, void **connection)
Christopher Haster 2:7fb7e78cb17f 187 {
Christopher Haster 13:57d9e1721826 188 return NSAPI_ERROR_UNSUPPORTED;
Christopher Haster 2:7fb7e78cb17f 189 }
Christopher Haster 2:7fb7e78cb17f 190
Christopher Haster 13:57d9e1721826 191 int LWIPInterface::socket_send(void *handle, const void *p, unsigned size)
Christopher Haster 2:7fb7e78cb17f 192 {
geky 14:67b325c56cde 193 int fd = (int)handle-1;
Christopher Haster 13:57d9e1721826 194 uint8_t *data = (uint8_t *)p;
Christopher Haster 13:57d9e1721826 195 unsigned written = 0;
Christopher Haster 2:7fb7e78cb17f 196
Christopher Haster 13:57d9e1721826 197 while (written < size) {
Christopher Haster 13:57d9e1721826 198 int ret = lwip_send(fd, data + written, size - written, 0);
Christopher Haster 2:7fb7e78cb17f 199
Christopher Haster 2:7fb7e78cb17f 200 if (ret > 0) {
Christopher Haster 13:57d9e1721826 201 written += ret;
Christopher Haster 2:7fb7e78cb17f 202 } else if (ret == 0) {
Christopher Haster 13:57d9e1721826 203 return NSAPI_ERROR_NO_CONNECTION;
Christopher Haster 2:7fb7e78cb17f 204 } else {
Christopher Haster 13:57d9e1721826 205 return NSAPI_ERROR_DEVICE_ERROR;
Christopher Haster 2:7fb7e78cb17f 206 }
Christopher Haster 2:7fb7e78cb17f 207 }
Christopher Haster 2:7fb7e78cb17f 208
Christopher Haster 13:57d9e1721826 209 return written;
Christopher Haster 2:7fb7e78cb17f 210 }
Christopher Haster 2:7fb7e78cb17f 211
Christopher Haster 13:57d9e1721826 212 int LWIPInterface::socket_recv(void *handle, void *data, unsigned size)
Christopher Haster 2:7fb7e78cb17f 213 {
geky 14:67b325c56cde 214 int fd = (int)handle-1;
Christopher Haster 2:7fb7e78cb17f 215 int ret = lwip_recv(fd, data, size, MSG_DONTWAIT);
Christopher Haster 2:7fb7e78cb17f 216
Christopher Haster 2:7fb7e78cb17f 217 if (ret > 0) {
Christopher Haster 2:7fb7e78cb17f 218 return ret;
Christopher Haster 2:7fb7e78cb17f 219 } else if (ret == 0) {
Christopher Haster 13:57d9e1721826 220 return NSAPI_ERROR_NO_CONNECTION;
Christopher Haster 2:7fb7e78cb17f 221 } else if (ret == -1) {
Christopher Haster 13:57d9e1721826 222 return NSAPI_ERROR_WOULD_BLOCK;
Christopher Haster 2:7fb7e78cb17f 223 } else {
Christopher Haster 13:57d9e1721826 224 return NSAPI_ERROR_DEVICE_ERROR;
Christopher Haster 2:7fb7e78cb17f 225 }
Christopher Haster 2:7fb7e78cb17f 226 }
Christopher Haster 2:7fb7e78cb17f 227
Christopher Haster 13:57d9e1721826 228 int LWIPInterface::socket_sendto(void *handle, const SocketAddress &addr, const void *p, unsigned size)
geky 12:899403b675fe 229 {
geky 14:67b325c56cde 230 int fd = (int)handle-1;
Christopher Haster 13:57d9e1721826 231 uint8_t *data = (uint8_t *)p;
Christopher Haster 13:57d9e1721826 232 unsigned written = 0;
geky 12:899403b675fe 233
Christopher Haster 13:57d9e1721826 234 struct sockaddr_in sa;
Christopher Haster 13:57d9e1721826 235 memset(&sa, 0, sizeof sa);
Christopher Haster 13:57d9e1721826 236 inet_aton(addr.get_ip_address(), &sa.sin_addr);
Christopher Haster 13:57d9e1721826 237 sa.sin_family = AF_INET;
Christopher Haster 13:57d9e1721826 238 sa.sin_port = htons(addr.get_port());
geky 12:899403b675fe 239
Christopher Haster 13:57d9e1721826 240 while (written < size) {
Christopher Haster 13:57d9e1721826 241 int ret = lwip_sendto(fd, data + written, size - written, 0,
Christopher Haster 13:57d9e1721826 242 (const struct sockaddr *)&sa, sizeof sa);
geky 12:899403b675fe 243
Christopher Haster 13:57d9e1721826 244 if (ret > 0) {
Christopher Haster 13:57d9e1721826 245 written += ret;
Christopher Haster 13:57d9e1721826 246 } else if (ret == 0) {
Christopher Haster 13:57d9e1721826 247 return NSAPI_ERROR_NO_CONNECTION;
Christopher Haster 13:57d9e1721826 248 } else {
Christopher Haster 13:57d9e1721826 249 return NSAPI_ERROR_DEVICE_ERROR;
Christopher Haster 13:57d9e1721826 250 }
geky 12:899403b675fe 251 }
geky 12:899403b675fe 252
Christopher Haster 13:57d9e1721826 253 return written;
Christopher Haster 13:57d9e1721826 254 }
geky 12:899403b675fe 255
Christopher Haster 13:57d9e1721826 256 int LWIPInterface::socket_recvfrom(void *handle, SocketAddress *addr, void *data, unsigned size)
Christopher Haster 13:57d9e1721826 257 {
geky 14:67b325c56cde 258 int fd = (int)handle-1;
Christopher Haster 13:57d9e1721826 259 struct sockaddr_in sa;
Christopher Haster 13:57d9e1721826 260 socklen_t sa_len = sizeof sa;
geky 12:899403b675fe 261
Christopher Haster 13:57d9e1721826 262 int ret = lwip_recvfrom(fd, data, size, MSG_DONTWAIT,
Christopher Haster 13:57d9e1721826 263 (struct sockaddr *)&sa, &sa_len);
geky 12:899403b675fe 264
Christopher Haster 13:57d9e1721826 265 if (ret > 0 && addr) {
Christopher Haster 13:57d9e1721826 266 addr->set_ip_address(inet_ntoa(sa.sin_addr));
Christopher Haster 13:57d9e1721826 267 addr->set_port(ntohs(sa.sin_port));
Christopher Haster 13:57d9e1721826 268 }
geky 12:899403b675fe 269
geky 14:67b325c56cde 270 if (ret > 0) {
Christopher Haster 13:57d9e1721826 271 return ret;
Christopher Haster 13:57d9e1721826 272 } else if (ret == 0) {
Christopher Haster 13:57d9e1721826 273 return NSAPI_ERROR_NO_CONNECTION;
Christopher Haster 13:57d9e1721826 274 } else if (ret == -1) {
Christopher Haster 13:57d9e1721826 275 return NSAPI_ERROR_WOULD_BLOCK;
Christopher Haster 13:57d9e1721826 276 } else {
Christopher Haster 13:57d9e1721826 277 return NSAPI_ERROR_DEVICE_ERROR;
Christopher Haster 13:57d9e1721826 278 }
Christopher Haster 13:57d9e1721826 279 }
geky 12:899403b675fe 280
Christopher Haster 13:57d9e1721826 281 int LWIPInterface::socket_close(void *handle, bool shutdown)
Christopher Haster 13:57d9e1721826 282 {
geky 14:67b325c56cde 283 int fd = (int)handle-1;
Christopher Haster 13:57d9e1721826 284 if (shutdown) {
Christopher Haster 13:57d9e1721826 285 lwip_shutdown(fd, SHUT_RDWR);
Christopher Haster 13:57d9e1721826 286 }
geky 12:899403b675fe 287
Christopher Haster 13:57d9e1721826 288 lwip_close(fd);
Christopher Haster 13:57d9e1721826 289 return 0;
Christopher Haster 13:57d9e1721826 290 }
geky 12:899403b675fe 291
Christopher Haster 13:57d9e1721826 292 void LWIPInterface::socket_attach_accept(void *handle, void (*callback)(void *), void *id)
Christopher Haster 13:57d9e1721826 293 {
Christopher Haster 13:57d9e1721826 294 }
geky 12:899403b675fe 295
Christopher Haster 13:57d9e1721826 296 void LWIPInterface::socket_attach_send(void *handle, void (*callback)(void *), void *id)
Christopher Haster 13:57d9e1721826 297 {
Christopher Haster 13:57d9e1721826 298 }
geky 12:899403b675fe 299
Christopher Haster 13:57d9e1721826 300 void LWIPInterface::socket_attach_recv(void *handle, void (*callback)(void *), void *id)
Christopher Haster 13:57d9e1721826 301 {
Christopher Haster 13:57d9e1721826 302 }
geky 12:899403b675fe 303