Implementation of the NetworkSocketAPI for LWIP
Dependencies: lwip-eth lwip-sys lwip
Dependents: HelloLWIPInterface HelloLWIPInterfaceNonBlocking LWIPInterfaceTests SimpleHTTPExample ... more
LWIPInterface.cpp@4:a7349bd7776c, 2016-02-29 (annotated)
- Committer:
- geky
- Date:
- Mon Feb 29 23:01:54 2016 +0000
- Revision:
- 4:a7349bd7776c
- Parent:
- 3:774869068511
- Child:
- 5:2c7d2186543c
Moved LWIPSocket into private class in LWIPInterface
Who changed what in which revision?
User | Revision | Line number | New 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 | */ |
geky | 1:2fbcfc9c12dd | 16 | |
Christopher Haster |
2:7fb7e78cb17f | 17 | #include "LWIPInterface.h" |
Christopher Haster |
2:7fb7e78cb17f | 18 | |
Christopher Haster |
2:7fb7e78cb17f | 19 | #include "mbed.h" |
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 | |
Christopher Haster |
2:7fb7e78cb17f | 30 | #define LWIP_TIMEOUT 15000 |
Christopher Haster |
2:7fb7e78cb17f | 31 | |
Christopher Haster |
2:7fb7e78cb17f | 32 | |
Christopher Haster |
2:7fb7e78cb17f | 33 | /* TCP/IP and Network Interface Initialisation */ |
Christopher Haster |
2:7fb7e78cb17f | 34 | static LWIPInterface *iface = 0; |
Christopher Haster |
2:7fb7e78cb17f | 35 | static struct netif netif; |
Christopher Haster |
2:7fb7e78cb17f | 36 | |
Christopher Haster |
2:7fb7e78cb17f | 37 | static char mac_addr[NS_MAC_SIZE] = "\0"; |
Christopher Haster |
2:7fb7e78cb17f | 38 | |
Christopher Haster |
2:7fb7e78cb17f | 39 | static Semaphore tcpip_inited(0); |
Christopher Haster |
2:7fb7e78cb17f | 40 | static Semaphore netif_linked(0); |
Christopher Haster |
2:7fb7e78cb17f | 41 | static Semaphore netif_up(0); |
Christopher Haster |
2:7fb7e78cb17f | 42 | |
Christopher Haster |
2:7fb7e78cb17f | 43 | static void tcpip_init_done(void *) { |
Christopher Haster |
2:7fb7e78cb17f | 44 | tcpip_inited.release(); |
Christopher Haster |
2:7fb7e78cb17f | 45 | } |
Christopher Haster |
2:7fb7e78cb17f | 46 | |
Christopher Haster |
2:7fb7e78cb17f | 47 | static void netif_link_callback(struct netif *netif) { |
Christopher Haster |
2:7fb7e78cb17f | 48 | if (netif_is_link_up(netif)) { |
Christopher Haster |
2:7fb7e78cb17f | 49 | netif_linked.release(); |
Christopher Haster |
2:7fb7e78cb17f | 50 | } |
Christopher Haster |
2:7fb7e78cb17f | 51 | } |
Christopher Haster |
2:7fb7e78cb17f | 52 | |
Christopher Haster |
2:7fb7e78cb17f | 53 | static void netif_status_callback(struct netif *netif) { |
Christopher Haster |
2:7fb7e78cb17f | 54 | if (netif_is_up(netif)) { |
Christopher Haster |
2:7fb7e78cb17f | 55 | iface->setIPAddress (inet_ntoa(netif->ip_addr)); |
Christopher Haster |
2:7fb7e78cb17f | 56 | iface->setNetworkMask(inet_ntoa(netif->netmask)); |
Christopher Haster |
2:7fb7e78cb17f | 57 | iface->setGateway (inet_ntoa(netif->gw)); |
Christopher Haster |
2:7fb7e78cb17f | 58 | netif_up.release(); |
Christopher Haster |
2:7fb7e78cb17f | 59 | } |
Christopher Haster |
2:7fb7e78cb17f | 60 | } |
Christopher Haster |
2:7fb7e78cb17f | 61 | |
Christopher Haster |
2:7fb7e78cb17f | 62 | static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) { |
Christopher Haster |
2:7fb7e78cb17f | 63 | tcpip_init(tcpip_init_done, NULL); |
Christopher Haster |
2:7fb7e78cb17f | 64 | tcpip_inited.wait(); |
Christopher Haster |
2:7fb7e78cb17f | 65 | |
Christopher Haster |
2:7fb7e78cb17f | 66 | memset((void*) &netif, 0, sizeof(netif)); |
Christopher Haster |
2:7fb7e78cb17f | 67 | netif_add(&netif, ipaddr, netmask, gw, NULL, eth_arch_enetif_init, tcpip_input); |
Christopher Haster |
2:7fb7e78cb17f | 68 | netif_set_default(&netif); |
Christopher Haster |
2:7fb7e78cb17f | 69 | |
Christopher Haster |
2:7fb7e78cb17f | 70 | netif_set_link_callback (&netif, netif_link_callback); |
Christopher Haster |
2:7fb7e78cb17f | 71 | netif_set_status_callback(&netif, netif_status_callback); |
Christopher Haster |
2:7fb7e78cb17f | 72 | } |
Christopher Haster |
2:7fb7e78cb17f | 73 | |
Christopher Haster |
2:7fb7e78cb17f | 74 | static void set_mac_address(void) { |
Christopher Haster |
2:7fb7e78cb17f | 75 | #if (MBED_MAC_ADDRESS_SUM != MBED_MAC_ADDR_INTERFACE) |
Christopher Haster |
2:7fb7e78cb17f | 76 | 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 | 77 | MBED_MAC_ADDR_3, MBED_MAC_ADDR_4, MBED_MAC_ADDR_5); |
Christopher Haster |
2:7fb7e78cb17f | 78 | #else |
Christopher Haster |
2:7fb7e78cb17f | 79 | char mac[6]; |
Christopher Haster |
2:7fb7e78cb17f | 80 | mbed_mac_address(mac); |
Christopher Haster |
2:7fb7e78cb17f | 81 | 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 | 82 | #endif |
Christopher Haster |
2:7fb7e78cb17f | 83 | } |
Christopher Haster |
2:7fb7e78cb17f | 84 | |
Christopher Haster |
2:7fb7e78cb17f | 85 | |
Christopher Haster |
2:7fb7e78cb17f | 86 | // LWIPInterface implementation |
Christopher Haster |
2:7fb7e78cb17f | 87 | int32_t LWIPInterface::connect() |
Christopher Haster |
2:7fb7e78cb17f | 88 | { |
Christopher Haster |
2:7fb7e78cb17f | 89 | // Only one instance of LWIP is currently supported |
Christopher Haster |
2:7fb7e78cb17f | 90 | if (iface) { |
Christopher Haster |
2:7fb7e78cb17f | 91 | return NS_ERROR_DEVICE_ERROR; |
Christopher Haster |
2:7fb7e78cb17f | 92 | } |
Christopher Haster |
2:7fb7e78cb17f | 93 | |
Christopher Haster |
2:7fb7e78cb17f | 94 | iface = this; |
Christopher Haster |
2:7fb7e78cb17f | 95 | |
Christopher Haster |
2:7fb7e78cb17f | 96 | // Set up network |
Christopher Haster |
2:7fb7e78cb17f | 97 | set_mac_address(); |
Christopher Haster |
2:7fb7e78cb17f | 98 | |
Christopher Haster |
2:7fb7e78cb17f | 99 | if (getDHCP()) { |
Christopher Haster |
2:7fb7e78cb17f | 100 | init_netif(0, 0, 0); |
Christopher Haster |
2:7fb7e78cb17f | 101 | } else { |
Christopher Haster |
2:7fb7e78cb17f | 102 | ip_addr_t ip_n, mask_n, gateway_n; |
Christopher Haster |
2:7fb7e78cb17f | 103 | inet_aton(getIPAddress(), &ip_n); |
Christopher Haster |
2:7fb7e78cb17f | 104 | inet_aton(getNetworkMask(), &mask_n); |
Christopher Haster |
2:7fb7e78cb17f | 105 | inet_aton(getGateway(), &gateway_n); |
Christopher Haster |
2:7fb7e78cb17f | 106 | init_netif(&ip_n, &mask_n, &gateway_n); |
Christopher Haster |
2:7fb7e78cb17f | 107 | } |
Christopher Haster |
2:7fb7e78cb17f | 108 | |
Christopher Haster |
2:7fb7e78cb17f | 109 | // Connect to network |
Christopher Haster |
2:7fb7e78cb17f | 110 | eth_arch_enable_interrupts(); |
Christopher Haster |
2:7fb7e78cb17f | 111 | |
Christopher Haster |
2:7fb7e78cb17f | 112 | if (getDHCP()) { |
Christopher Haster |
2:7fb7e78cb17f | 113 | dhcp_start(&netif); |
Christopher Haster |
2:7fb7e78cb17f | 114 | |
Christopher Haster |
2:7fb7e78cb17f | 115 | // Wait for an IP Address |
Christopher Haster |
2:7fb7e78cb17f | 116 | // -1: error, 0: timeout |
Christopher Haster |
2:7fb7e78cb17f | 117 | if (netif_up.wait(LWIP_TIMEOUT) < 0) { |
Christopher Haster |
2:7fb7e78cb17f | 118 | return NS_ERROR_TIMEOUT; |
Christopher Haster |
2:7fb7e78cb17f | 119 | } |
Christopher Haster |
2:7fb7e78cb17f | 120 | } else { |
Christopher Haster |
2:7fb7e78cb17f | 121 | netif_set_up(&netif); |
Christopher Haster |
2:7fb7e78cb17f | 122 | |
Christopher Haster |
2:7fb7e78cb17f | 123 | // Wait for the link up |
Christopher Haster |
2:7fb7e78cb17f | 124 | if (netif_linked.wait(LWIP_TIMEOUT) < 0) { |
Christopher Haster |
2:7fb7e78cb17f | 125 | return NS_ERROR_TIMEOUT; |
Christopher Haster |
2:7fb7e78cb17f | 126 | } |
Christopher Haster |
2:7fb7e78cb17f | 127 | } |
Christopher Haster |
2:7fb7e78cb17f | 128 | |
Christopher Haster |
2:7fb7e78cb17f | 129 | return 0; |
Christopher Haster |
2:7fb7e78cb17f | 130 | } |
Christopher Haster |
2:7fb7e78cb17f | 131 | |
Christopher Haster |
2:7fb7e78cb17f | 132 | int32_t LWIPInterface::disconnect() |
Christopher Haster |
2:7fb7e78cb17f | 133 | { |
Christopher Haster |
2:7fb7e78cb17f | 134 | if (getDHCP()) { |
Christopher Haster |
2:7fb7e78cb17f | 135 | dhcp_release(&netif); |
Christopher Haster |
2:7fb7e78cb17f | 136 | dhcp_stop(&netif); |
Christopher Haster |
2:7fb7e78cb17f | 137 | } else { |
Christopher Haster |
2:7fb7e78cb17f | 138 | netif_set_down(&netif); |
Christopher Haster |
2:7fb7e78cb17f | 139 | } |
Christopher Haster |
2:7fb7e78cb17f | 140 | |
Christopher Haster |
2:7fb7e78cb17f | 141 | eth_arch_disable_interrupts(); |
Christopher Haster |
2:7fb7e78cb17f | 142 | |
Christopher Haster |
2:7fb7e78cb17f | 143 | return 0; |
Christopher Haster |
2:7fb7e78cb17f | 144 | } |
Christopher Haster |
2:7fb7e78cb17f | 145 | |
Christopher Haster |
2:7fb7e78cb17f | 146 | const char *LWIPInterface::getMACAddress() |
Christopher Haster |
2:7fb7e78cb17f | 147 | { |
Christopher Haster |
2:7fb7e78cb17f | 148 | return mac_addr; |
Christopher Haster |
2:7fb7e78cb17f | 149 | } |
Christopher Haster |
2:7fb7e78cb17f | 150 | |
geky | 3:774869068511 | 151 | SocketInterface *LWIPInterface::createSocket(ns_protocol_t proto) |
Christopher Haster |
2:7fb7e78cb17f | 152 | { |
geky | 3:774869068511 | 153 | int type = (proto == NS_UDP) ? SOCK_DGRAM : SOCK_STREAM; |
Christopher Haster |
2:7fb7e78cb17f | 154 | int fd = lwip_socket(AF_INET, type, 0); |
Christopher Haster |
2:7fb7e78cb17f | 155 | if (fd < 0) { |
Christopher Haster |
2:7fb7e78cb17f | 156 | return 0; |
Christopher Haster |
2:7fb7e78cb17f | 157 | } |
Christopher Haster |
2:7fb7e78cb17f | 158 | |
Christopher Haster |
2:7fb7e78cb17f | 159 | return new LWIPSocket(fd); |
Christopher Haster |
2:7fb7e78cb17f | 160 | } |
Christopher Haster |
2:7fb7e78cb17f | 161 | |
Christopher Haster |
2:7fb7e78cb17f | 162 | void LWIPInterface::destroySocket(SocketInterface *siface) |
Christopher Haster |
2:7fb7e78cb17f | 163 | { |
Christopher Haster |
2:7fb7e78cb17f | 164 | LWIPSocket *socket = (LWIPSocket *)siface; |
Christopher Haster |
2:7fb7e78cb17f | 165 | lwip_close(socket->fd); |
Christopher Haster |
2:7fb7e78cb17f | 166 | |
Christopher Haster |
2:7fb7e78cb17f | 167 | delete socket; |
Christopher Haster |
2:7fb7e78cb17f | 168 | } |
Christopher Haster |
2:7fb7e78cb17f | 169 | |
Christopher Haster |
2:7fb7e78cb17f | 170 | |
Christopher Haster |
2:7fb7e78cb17f | 171 | // TCP SocketInterface implementation |
geky | 4:a7349bd7776c | 172 | int32_t LWIPInterface::LWIPSocket::open(const char *ip, uint16_t port) |
Christopher Haster |
2:7fb7e78cb17f | 173 | { |
Christopher Haster |
2:7fb7e78cb17f | 174 | struct sockaddr_in host; |
Christopher Haster |
2:7fb7e78cb17f | 175 | memset(&host, 0, sizeof host); |
Christopher Haster |
2:7fb7e78cb17f | 176 | inet_aton(ip, &host.sin_addr); |
Christopher Haster |
2:7fb7e78cb17f | 177 | host.sin_family = AF_INET; |
Christopher Haster |
2:7fb7e78cb17f | 178 | host.sin_port = htons(port); |
Christopher Haster |
2:7fb7e78cb17f | 179 | |
Christopher Haster |
2:7fb7e78cb17f | 180 | if (lwip_connect(fd, (const struct sockaddr *)&host, sizeof host) < 0) { |
Christopher Haster |
2:7fb7e78cb17f | 181 | return NS_ERROR_NO_CONNECTION; |
Christopher Haster |
2:7fb7e78cb17f | 182 | } |
Christopher Haster |
2:7fb7e78cb17f | 183 | |
Christopher Haster |
2:7fb7e78cb17f | 184 | return 0; |
Christopher Haster |
2:7fb7e78cb17f | 185 | } |
Christopher Haster |
2:7fb7e78cb17f | 186 | |
geky | 4:a7349bd7776c | 187 | int32_t LWIPInterface::LWIPSocket::close() |
Christopher Haster |
2:7fb7e78cb17f | 188 | { |
Christopher Haster |
2:7fb7e78cb17f | 189 | return 0; |
Christopher Haster |
2:7fb7e78cb17f | 190 | } |
Christopher Haster |
2:7fb7e78cb17f | 191 | |
geky | 4:a7349bd7776c | 192 | int32_t LWIPInterface::LWIPSocket::send(const void *voiddata, uint32_t size) |
Christopher Haster |
2:7fb7e78cb17f | 193 | { |
Christopher Haster |
2:7fb7e78cb17f | 194 | uint8_t *data = (uint8_t *)voiddata; |
Christopher Haster |
2:7fb7e78cb17f | 195 | uint32_t writtenLen = 0; |
Christopher Haster |
2:7fb7e78cb17f | 196 | |
Christopher Haster |
2:7fb7e78cb17f | 197 | while (writtenLen < size) { |
Christopher Haster |
2:7fb7e78cb17f | 198 | int ret = lwip_send(fd, data + writtenLen, size - writtenLen, 0); |
Christopher Haster |
2:7fb7e78cb17f | 199 | |
Christopher Haster |
2:7fb7e78cb17f | 200 | if (ret > 0) { |
Christopher Haster |
2:7fb7e78cb17f | 201 | writtenLen += ret; |
Christopher Haster |
2:7fb7e78cb17f | 202 | } else if (ret == 0) { |
Christopher Haster |
2:7fb7e78cb17f | 203 | return NS_ERROR_NO_CONNECTION; |
Christopher Haster |
2:7fb7e78cb17f | 204 | } else { |
Christopher Haster |
2:7fb7e78cb17f | 205 | return NS_ERROR_DEVICE_ERROR; |
Christopher Haster |
2:7fb7e78cb17f | 206 | } |
Christopher Haster |
2:7fb7e78cb17f | 207 | } |
Christopher Haster |
2:7fb7e78cb17f | 208 | |
Christopher Haster |
2:7fb7e78cb17f | 209 | return 0; |
Christopher Haster |
2:7fb7e78cb17f | 210 | } |
Christopher Haster |
2:7fb7e78cb17f | 211 | |
geky | 4:a7349bd7776c | 212 | int32_t LWIPInterface::LWIPSocket::recv(void *data, uint32_t size) |
Christopher Haster |
2:7fb7e78cb17f | 213 | { |
Christopher Haster |
2:7fb7e78cb17f | 214 | int ret = lwip_recv(fd, data, size, MSG_DONTWAIT); |
Christopher Haster |
2:7fb7e78cb17f | 215 | |
Christopher Haster |
2:7fb7e78cb17f | 216 | if (ret > 0) { |
Christopher Haster |
2:7fb7e78cb17f | 217 | return ret; |
Christopher Haster |
2:7fb7e78cb17f | 218 | } else if (ret == 0) { |
Christopher Haster |
2:7fb7e78cb17f | 219 | return NS_ERROR_NO_CONNECTION; |
Christopher Haster |
2:7fb7e78cb17f | 220 | } else if (ret == -1) { |
Christopher Haster |
2:7fb7e78cb17f | 221 | return 0; |
Christopher Haster |
2:7fb7e78cb17f | 222 | } else { |
Christopher Haster |
2:7fb7e78cb17f | 223 | return NS_ERROR_DEVICE_ERROR; |
Christopher Haster |
2:7fb7e78cb17f | 224 | } |
Christopher Haster |
2:7fb7e78cb17f | 225 | } |
Christopher Haster |
2:7fb7e78cb17f | 226 | |
Christopher Haster |
2:7fb7e78cb17f | 227 |