Free (GPLv2) TCP/IP stack developed by TASS Belgium
Dependents: lpc1768-picotcp-demo ZeroMQ_PicoTCP_Publisher_demo TCPSocket_HelloWorld_PicoTCP Pico_TCP_UDP_Test ... more
PicoTCP. Copyright (c) 2013 TASS Belgium NV.
Released under the GNU General Public License, version 2.
Different licensing models may exist, at the sole discretion of the Copyright holders.
Official homepage: http://www.picotcp.com
Bug tracker: https://github.com/tass-belgium/picotcp/issues
Development steps:
initial integration with mbed RTOSgeneric mbed Ethernet driverhigh performance NXP LPC1768 specific Ethernet driverMulti-threading support for mbed RTOSBerkeley sockets and integration with the New Socket APIFork of the apps running on top of the New Socket APIScheduling optimizations- Debugging/benchmarking/testing
Demo application (measuring TCP sender performance):
Import programlpc1768-picotcp-demo
A PicoTCP demo app testing the ethernet throughput on the lpc1768 mbed board.
modules/pico_dhcp_server.c@3:b4047e8a0123, 2013-05-24 (annotated)
- Committer:
- daniele
- Date:
- Fri May 24 15:25:25 2013 +0000
- Revision:
- 3:b4047e8a0123
Updated from main repo + fixed Mutexes;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
daniele | 3:b4047e8a0123 | 1 | /********************************************************************* |
daniele | 3:b4047e8a0123 | 2 | PicoTCP. Copyright (c) 2012 TASS Belgium NV. Some rights reserved. |
daniele | 3:b4047e8a0123 | 3 | See LICENSE and COPYING for usage. |
daniele | 3:b4047e8a0123 | 4 | |
daniele | 3:b4047e8a0123 | 5 | |
daniele | 3:b4047e8a0123 | 6 | Authors: Frederik Van Slycken, Kristof Roelants |
daniele | 3:b4047e8a0123 | 7 | *********************************************************************/ |
daniele | 3:b4047e8a0123 | 8 | |
daniele | 3:b4047e8a0123 | 9 | #ifdef PICO_SUPPORT_DHCPD |
daniele | 3:b4047e8a0123 | 10 | |
daniele | 3:b4047e8a0123 | 11 | #include "pico_dhcp_server.h" |
daniele | 3:b4047e8a0123 | 12 | #include "pico_stack.h" |
daniele | 3:b4047e8a0123 | 13 | #include "pico_config.h" |
daniele | 3:b4047e8a0123 | 14 | #include "pico_addressing.h" |
daniele | 3:b4047e8a0123 | 15 | #include "pico_socket.h" |
daniele | 3:b4047e8a0123 | 16 | #include "pico_arp.h" |
daniele | 3:b4047e8a0123 | 17 | #include <stdlib.h> |
daniele | 3:b4047e8a0123 | 18 | |
daniele | 3:b4047e8a0123 | 19 | # define dhcpd_dbg(...) do{}while(0) |
daniele | 3:b4047e8a0123 | 20 | //# define dhcpd_dbg dbg |
daniele | 3:b4047e8a0123 | 21 | |
daniele | 3:b4047e8a0123 | 22 | #define dhcpd_make_offer(x) dhcpd_make_reply(x, PICO_DHCP_MSG_OFFER) |
daniele | 3:b4047e8a0123 | 23 | #define dhcpd_make_ack(x) dhcpd_make_reply(x, PICO_DHCP_MSG_ACK) |
daniele | 3:b4047e8a0123 | 24 | #define ip_inrange(x) ((long_be(x) >= long_be(dn->settings->pool_start)) && (long_be(x) <= long_be(dn->settings->pool_end))) |
daniele | 3:b4047e8a0123 | 25 | |
daniele | 3:b4047e8a0123 | 26 | static int dhcp_settings_cmp(void *ka, void *kb) |
daniele | 3:b4047e8a0123 | 27 | { |
daniele | 3:b4047e8a0123 | 28 | struct pico_dhcpd_settings *a = ka, *b = kb; |
daniele | 3:b4047e8a0123 | 29 | if (a->dev < b->dev) |
daniele | 3:b4047e8a0123 | 30 | return -1; |
daniele | 3:b4047e8a0123 | 31 | else if (a->dev > b->dev) |
daniele | 3:b4047e8a0123 | 32 | return 1; |
daniele | 3:b4047e8a0123 | 33 | else |
daniele | 3:b4047e8a0123 | 34 | return 0; |
daniele | 3:b4047e8a0123 | 35 | } |
daniele | 3:b4047e8a0123 | 36 | PICO_TREE_DECLARE(DHCPSettings, dhcp_settings_cmp); |
daniele | 3:b4047e8a0123 | 37 | |
daniele | 3:b4047e8a0123 | 38 | static int dhcp_negotiations_cmp(void *ka, void *kb) |
daniele | 3:b4047e8a0123 | 39 | { |
daniele | 3:b4047e8a0123 | 40 | struct pico_dhcp_negotiation *a = ka, *b = kb; |
daniele | 3:b4047e8a0123 | 41 | if (a->xid < b->xid) |
daniele | 3:b4047e8a0123 | 42 | return -1; |
daniele | 3:b4047e8a0123 | 43 | else if (a->xid > b->xid) |
daniele | 3:b4047e8a0123 | 44 | return 1; |
daniele | 3:b4047e8a0123 | 45 | else |
daniele | 3:b4047e8a0123 | 46 | return 0; |
daniele | 3:b4047e8a0123 | 47 | } |
daniele | 3:b4047e8a0123 | 48 | PICO_TREE_DECLARE(DHCPNegotiations, dhcp_negotiations_cmp); |
daniele | 3:b4047e8a0123 | 49 | |
daniele | 3:b4047e8a0123 | 50 | static struct pico_dhcp_negotiation *get_negotiation_by_xid(uint32_t xid) |
daniele | 3:b4047e8a0123 | 51 | { |
daniele | 3:b4047e8a0123 | 52 | struct pico_dhcp_negotiation test = { }, *neg = NULL; |
daniele | 3:b4047e8a0123 | 53 | |
daniele | 3:b4047e8a0123 | 54 | test.xid = xid; |
daniele | 3:b4047e8a0123 | 55 | neg = pico_tree_findKey(&DHCPNegotiations, &test); |
daniele | 3:b4047e8a0123 | 56 | if (!neg) |
daniele | 3:b4047e8a0123 | 57 | return NULL; |
daniele | 3:b4047e8a0123 | 58 | else |
daniele | 3:b4047e8a0123 | 59 | return neg; |
daniele | 3:b4047e8a0123 | 60 | } |
daniele | 3:b4047e8a0123 | 61 | |
daniele | 3:b4047e8a0123 | 62 | static void dhcpd_make_reply(struct pico_dhcp_negotiation *dn, uint8_t reply_type) |
daniele | 3:b4047e8a0123 | 63 | { |
daniele | 3:b4047e8a0123 | 64 | uint8_t buf_out[DHCPD_DATAGRAM_SIZE] = {0}; |
daniele | 3:b4047e8a0123 | 65 | struct pico_dhcphdr *dh_out = (struct pico_dhcphdr *) buf_out; |
daniele | 3:b4047e8a0123 | 66 | struct pico_ip4 destination = { }; |
daniele | 3:b4047e8a0123 | 67 | uint32_t bcast = dn->settings->my_ip.addr | ~(dn->settings->netmask.addr); |
daniele | 3:b4047e8a0123 | 68 | uint32_t dns_server = OPENDNS; |
daniele | 3:b4047e8a0123 | 69 | uint16_t port = PICO_DHCP_CLIENT_PORT; |
daniele | 3:b4047e8a0123 | 70 | int sent = 0; |
daniele | 3:b4047e8a0123 | 71 | |
daniele | 3:b4047e8a0123 | 72 | memcpy(dh_out->hwaddr, dn->eth.addr, PICO_HLEN_ETHER); |
daniele | 3:b4047e8a0123 | 73 | dh_out->op = PICO_DHCP_OP_REPLY; |
daniele | 3:b4047e8a0123 | 74 | dh_out->htype = PICO_HTYPE_ETHER; |
daniele | 3:b4047e8a0123 | 75 | dh_out->hlen = PICO_HLEN_ETHER; |
daniele | 3:b4047e8a0123 | 76 | dh_out->xid = dn->xid; |
daniele | 3:b4047e8a0123 | 77 | dh_out->yiaddr = dn->ipv4.addr; |
daniele | 3:b4047e8a0123 | 78 | dh_out->siaddr = dn->settings->my_ip.addr; |
daniele | 3:b4047e8a0123 | 79 | dh_out->dhcp_magic = PICO_DHCPD_MAGIC_COOKIE; |
daniele | 3:b4047e8a0123 | 80 | |
daniele | 3:b4047e8a0123 | 81 | /* Option: msg type, len 1 */ |
daniele | 3:b4047e8a0123 | 82 | dh_out->options[0] = PICO_DHCPOPT_MSGTYPE; |
daniele | 3:b4047e8a0123 | 83 | dh_out->options[1] = 1; |
daniele | 3:b4047e8a0123 | 84 | dh_out->options[2] = reply_type; |
daniele | 3:b4047e8a0123 | 85 | |
daniele | 3:b4047e8a0123 | 86 | /* Option: server id, len 4 */ |
daniele | 3:b4047e8a0123 | 87 | dh_out->options[3] = PICO_DHCPOPT_SERVERID; |
daniele | 3:b4047e8a0123 | 88 | dh_out->options[4] = 4; |
daniele | 3:b4047e8a0123 | 89 | memcpy(dh_out->options + 5, &dn->settings->my_ip.addr, 4); |
daniele | 3:b4047e8a0123 | 90 | |
daniele | 3:b4047e8a0123 | 91 | /* Option: Lease time, len 4 */ |
daniele | 3:b4047e8a0123 | 92 | dh_out->options[9] = PICO_DHCPOPT_LEASETIME; |
daniele | 3:b4047e8a0123 | 93 | dh_out->options[10] = 4; |
daniele | 3:b4047e8a0123 | 94 | memcpy(dh_out->options + 11, &dn->settings->lease_time, 4); |
daniele | 3:b4047e8a0123 | 95 | |
daniele | 3:b4047e8a0123 | 96 | /* Option: Netmask, len 4 */ |
daniele | 3:b4047e8a0123 | 97 | dh_out->options[15] = PICO_DHCPOPT_NETMASK; |
daniele | 3:b4047e8a0123 | 98 | dh_out->options[16] = 4; |
daniele | 3:b4047e8a0123 | 99 | memcpy(dh_out->options + 17, &dn->settings->netmask.addr, 4); |
daniele | 3:b4047e8a0123 | 100 | |
daniele | 3:b4047e8a0123 | 101 | /* Option: Router, len 4 */ |
daniele | 3:b4047e8a0123 | 102 | dh_out->options[21] = PICO_DHCPOPT_ROUTER; |
daniele | 3:b4047e8a0123 | 103 | dh_out->options[22] = 4; |
daniele | 3:b4047e8a0123 | 104 | memcpy(dh_out->options + 23, &dn->settings->my_ip.addr, 4); |
daniele | 3:b4047e8a0123 | 105 | |
daniele | 3:b4047e8a0123 | 106 | /* Option: Broadcast, len 4 */ |
daniele | 3:b4047e8a0123 | 107 | dh_out->options[27] = PICO_DHCPOPT_BCAST; |
daniele | 3:b4047e8a0123 | 108 | dh_out->options[28] = 4; |
daniele | 3:b4047e8a0123 | 109 | memcpy(dh_out->options + 29, &bcast, 4); |
daniele | 3:b4047e8a0123 | 110 | |
daniele | 3:b4047e8a0123 | 111 | /* Option: DNS, len 4 */ |
daniele | 3:b4047e8a0123 | 112 | dh_out->options[33] = PICO_DHCPOPT_DNS; |
daniele | 3:b4047e8a0123 | 113 | dh_out->options[34] = 4; |
daniele | 3:b4047e8a0123 | 114 | memcpy(dh_out->options + 35, &dns_server, 4); |
daniele | 3:b4047e8a0123 | 115 | |
daniele | 3:b4047e8a0123 | 116 | dh_out->options[40] = PICO_DHCPOPT_END; |
daniele | 3:b4047e8a0123 | 117 | |
daniele | 3:b4047e8a0123 | 118 | destination.addr = dh_out->yiaddr; |
daniele | 3:b4047e8a0123 | 119 | |
daniele | 3:b4047e8a0123 | 120 | sent = pico_socket_sendto(dn->settings->s, buf_out, DHCPD_DATAGRAM_SIZE, &destination, port); |
daniele | 3:b4047e8a0123 | 121 | if (sent < 0) { |
daniele | 3:b4047e8a0123 | 122 | dhcpd_dbg("DHCPD: sendto failed with code %d!\n", pico_err); |
daniele | 3:b4047e8a0123 | 123 | } |
daniele | 3:b4047e8a0123 | 124 | } |
daniele | 3:b4047e8a0123 | 125 | |
daniele | 3:b4047e8a0123 | 126 | static void dhcp_recv(struct pico_socket *s, uint8_t *buffer, int len) |
daniele | 3:b4047e8a0123 | 127 | { |
daniele | 3:b4047e8a0123 | 128 | struct pico_dhcphdr *dhdr = (struct pico_dhcphdr *) buffer; |
daniele | 3:b4047e8a0123 | 129 | struct pico_dhcp_negotiation *dn = get_negotiation_by_xid(dhdr->xid); |
daniele | 3:b4047e8a0123 | 130 | struct pico_ip4* ipv4 = NULL; |
daniele | 3:b4047e8a0123 | 131 | struct pico_dhcpd_settings test, *settings = NULL; |
daniele | 3:b4047e8a0123 | 132 | uint8_t *nextopt, opt_data[20], opt_type; |
daniele | 3:b4047e8a0123 | 133 | int opt_len = 20; |
daniele | 3:b4047e8a0123 | 134 | |
daniele | 3:b4047e8a0123 | 135 | if (!is_options_valid(dhdr->options, len - sizeof(struct pico_dhcphdr))) { |
daniele | 3:b4047e8a0123 | 136 | dhcpd_dbg("DHCPD WARNING: invalid options in dhcp message\n"); |
daniele | 3:b4047e8a0123 | 137 | return; |
daniele | 3:b4047e8a0123 | 138 | } |
daniele | 3:b4047e8a0123 | 139 | |
daniele | 3:b4047e8a0123 | 140 | if (!dn) { |
daniele | 3:b4047e8a0123 | 141 | dn = pico_zalloc(sizeof(struct pico_dhcp_negotiation)); |
daniele | 3:b4047e8a0123 | 142 | if (!dn) { |
daniele | 3:b4047e8a0123 | 143 | pico_err = PICO_ERR_ENOMEM; |
daniele | 3:b4047e8a0123 | 144 | return; |
daniele | 3:b4047e8a0123 | 145 | } |
daniele | 3:b4047e8a0123 | 146 | dn->xid = dhdr->xid; |
daniele | 3:b4047e8a0123 | 147 | dn->state = DHCPSTATE_DISCOVER; |
daniele | 3:b4047e8a0123 | 148 | memcpy(dn->eth.addr, dhdr->hwaddr, PICO_HLEN_ETHER); |
daniele | 3:b4047e8a0123 | 149 | |
daniele | 3:b4047e8a0123 | 150 | test.dev = pico_ipv4_link_find(&s->local_addr.ip4); |
daniele | 3:b4047e8a0123 | 151 | settings = pico_tree_findKey(&DHCPSettings, &test); |
daniele | 3:b4047e8a0123 | 152 | if (settings) { |
daniele | 3:b4047e8a0123 | 153 | dn->settings = settings; |
daniele | 3:b4047e8a0123 | 154 | } else { |
daniele | 3:b4047e8a0123 | 155 | dhcpd_dbg("DHCPD WARNING: received DHCP message on unconfigured link %s\n", test.dev->name); |
daniele | 3:b4047e8a0123 | 156 | pico_free(dn); |
daniele | 3:b4047e8a0123 | 157 | return; |
daniele | 3:b4047e8a0123 | 158 | } |
daniele | 3:b4047e8a0123 | 159 | |
daniele | 3:b4047e8a0123 | 160 | ipv4 = pico_arp_reverse_lookup(&dn->eth); |
daniele | 3:b4047e8a0123 | 161 | if (!ipv4) { |
daniele | 3:b4047e8a0123 | 162 | dn->ipv4.addr = settings->pool_next; |
daniele | 3:b4047e8a0123 | 163 | pico_arp_create_entry(dn->eth.addr, dn->ipv4, settings->dev); |
daniele | 3:b4047e8a0123 | 164 | settings->pool_next = long_be(long_be(settings->pool_next) + 1); |
daniele | 3:b4047e8a0123 | 165 | } else { |
daniele | 3:b4047e8a0123 | 166 | dn->ipv4.addr = ipv4->addr; |
daniele | 3:b4047e8a0123 | 167 | } |
daniele | 3:b4047e8a0123 | 168 | |
daniele | 3:b4047e8a0123 | 169 | if (pico_tree_insert(&DHCPNegotiations, dn)) { |
daniele | 3:b4047e8a0123 | 170 | dhcpd_dbg("DHCPD WARNING: tried creating new negotation for existing xid %u\n", dn->xid); |
daniele | 3:b4047e8a0123 | 171 | pico_free(dn); |
daniele | 3:b4047e8a0123 | 172 | return; /* Element key already exists */ |
daniele | 3:b4047e8a0123 | 173 | } |
daniele | 3:b4047e8a0123 | 174 | } |
daniele | 3:b4047e8a0123 | 175 | |
daniele | 3:b4047e8a0123 | 176 | if (!ip_inrange(dn->ipv4.addr)) |
daniele | 3:b4047e8a0123 | 177 | return; |
daniele | 3:b4047e8a0123 | 178 | |
daniele | 3:b4047e8a0123 | 179 | opt_type = dhcp_get_next_option(dhdr->options, opt_data, &opt_len, &nextopt); |
daniele | 3:b4047e8a0123 | 180 | while (opt_type != PICO_DHCPOPT_END) { |
daniele | 3:b4047e8a0123 | 181 | /* parse interesting options here */ |
daniele | 3:b4047e8a0123 | 182 | if (opt_type == PICO_DHCPOPT_MSGTYPE) { |
daniele | 3:b4047e8a0123 | 183 | /* server simple state machine */ |
daniele | 3:b4047e8a0123 | 184 | uint8_t msg_type = opt_data[0]; |
daniele | 3:b4047e8a0123 | 185 | if (msg_type == PICO_DHCP_MSG_DISCOVER) { |
daniele | 3:b4047e8a0123 | 186 | dhcpd_make_offer(dn); |
daniele | 3:b4047e8a0123 | 187 | dn->state = DHCPSTATE_OFFER; |
daniele | 3:b4047e8a0123 | 188 | return; |
daniele | 3:b4047e8a0123 | 189 | } else if ((msg_type == PICO_DHCP_MSG_REQUEST)&&( dn->state == DHCPSTATE_OFFER)) { |
daniele | 3:b4047e8a0123 | 190 | dhcpd_make_ack(dn); |
daniele | 3:b4047e8a0123 | 191 | dn->state = DHCPSTATE_BOUND; |
daniele | 3:b4047e8a0123 | 192 | return; |
daniele | 3:b4047e8a0123 | 193 | } |
daniele | 3:b4047e8a0123 | 194 | } |
daniele | 3:b4047e8a0123 | 195 | opt_len = 20; |
daniele | 3:b4047e8a0123 | 196 | opt_type = dhcp_get_next_option(NULL, opt_data, &opt_len, &nextopt); |
daniele | 3:b4047e8a0123 | 197 | } |
daniele | 3:b4047e8a0123 | 198 | } |
daniele | 3:b4047e8a0123 | 199 | |
daniele | 3:b4047e8a0123 | 200 | static void pico_dhcpd_wakeup(uint16_t ev, struct pico_socket *s) |
daniele | 3:b4047e8a0123 | 201 | { |
daniele | 3:b4047e8a0123 | 202 | uint8_t buf[DHCPD_DATAGRAM_SIZE] = { }; |
daniele | 3:b4047e8a0123 | 203 | int r = 0; |
daniele | 3:b4047e8a0123 | 204 | uint32_t peer = 0; |
daniele | 3:b4047e8a0123 | 205 | uint16_t port = 0; |
daniele | 3:b4047e8a0123 | 206 | |
daniele | 3:b4047e8a0123 | 207 | dhcpd_dbg("DHCPD: called dhcpd_wakeup\n"); |
daniele | 3:b4047e8a0123 | 208 | if (ev == PICO_SOCK_EV_RD) { |
daniele | 3:b4047e8a0123 | 209 | do { |
daniele | 3:b4047e8a0123 | 210 | r = pico_socket_recvfrom(s, buf, DHCPD_DATAGRAM_SIZE, &peer, &port); |
daniele | 3:b4047e8a0123 | 211 | if (r > 0 && port == PICO_DHCP_CLIENT_PORT) { |
daniele | 3:b4047e8a0123 | 212 | dhcp_recv(s, buf, r); |
daniele | 3:b4047e8a0123 | 213 | } |
daniele | 3:b4047e8a0123 | 214 | } while(r>0); |
daniele | 3:b4047e8a0123 | 215 | } |
daniele | 3:b4047e8a0123 | 216 | } |
daniele | 3:b4047e8a0123 | 217 | |
daniele | 3:b4047e8a0123 | 218 | int pico_dhcp_server_initiate(struct pico_dhcpd_settings *setting) |
daniele | 3:b4047e8a0123 | 219 | { |
daniele | 3:b4047e8a0123 | 220 | struct pico_dhcpd_settings *settings = NULL; |
daniele | 3:b4047e8a0123 | 221 | struct pico_ipv4_link *link = NULL; |
daniele | 3:b4047e8a0123 | 222 | uint16_t port = PICO_DHCPD_PORT; |
daniele | 3:b4047e8a0123 | 223 | |
daniele | 3:b4047e8a0123 | 224 | if (!setting) { |
daniele | 3:b4047e8a0123 | 225 | pico_err = PICO_ERR_EINVAL; |
daniele | 3:b4047e8a0123 | 226 | return -1; |
daniele | 3:b4047e8a0123 | 227 | } |
daniele | 3:b4047e8a0123 | 228 | |
daniele | 3:b4047e8a0123 | 229 | if (!setting->my_ip.addr) { |
daniele | 3:b4047e8a0123 | 230 | pico_err = PICO_ERR_EINVAL; |
daniele | 3:b4047e8a0123 | 231 | dhcpd_dbg("DHCPD: IP address of interface was not supplied\n"); |
daniele | 3:b4047e8a0123 | 232 | return -1; |
daniele | 3:b4047e8a0123 | 233 | } |
daniele | 3:b4047e8a0123 | 234 | |
daniele | 3:b4047e8a0123 | 235 | link = pico_ipv4_link_get(&setting->my_ip); |
daniele | 3:b4047e8a0123 | 236 | if (!link) { |
daniele | 3:b4047e8a0123 | 237 | pico_err = PICO_ERR_EINVAL; |
daniele | 3:b4047e8a0123 | 238 | dhcpd_dbg("DHCPD: no link with IP %X found\n", setting->my_ip.addr); |
daniele | 3:b4047e8a0123 | 239 | return -1; |
daniele | 3:b4047e8a0123 | 240 | } |
daniele | 3:b4047e8a0123 | 241 | |
daniele | 3:b4047e8a0123 | 242 | settings = pico_zalloc(sizeof(struct pico_dhcpd_settings)); |
daniele | 3:b4047e8a0123 | 243 | if (!settings) { |
daniele | 3:b4047e8a0123 | 244 | pico_err = PICO_ERR_ENOMEM; |
daniele | 3:b4047e8a0123 | 245 | return -1; |
daniele | 3:b4047e8a0123 | 246 | } |
daniele | 3:b4047e8a0123 | 247 | memcpy(settings, setting, sizeof(struct pico_dhcpd_settings)); |
daniele | 3:b4047e8a0123 | 248 | |
daniele | 3:b4047e8a0123 | 249 | settings->dev = link->dev; |
daniele | 3:b4047e8a0123 | 250 | dhcpd_dbg("DHCPD: configuring DHCP server for link %s\n", link->dev->name); |
daniele | 3:b4047e8a0123 | 251 | settings->my_ip.addr = link->address.addr; |
daniele | 3:b4047e8a0123 | 252 | dhcpd_dbg("DHCPD: using server addr %X\n", long_be(settings->my_ip.addr)); |
daniele | 3:b4047e8a0123 | 253 | settings->netmask.addr = link->netmask.addr; |
daniele | 3:b4047e8a0123 | 254 | dhcpd_dbg("DHCPD: using netmask %X\n", long_be(settings->netmask.addr)); |
daniele | 3:b4047e8a0123 | 255 | |
daniele | 3:b4047e8a0123 | 256 | /* default values if not provided */ |
daniele | 3:b4047e8a0123 | 257 | if (settings->pool_start == 0) |
daniele | 3:b4047e8a0123 | 258 | settings->pool_start = (settings->my_ip.addr & settings->netmask.addr) | POOL_START; |
daniele | 3:b4047e8a0123 | 259 | dhcpd_dbg("DHCPD: using pool_start %X\n", long_be(settings->pool_start)); |
daniele | 3:b4047e8a0123 | 260 | if (settings->pool_end == 0) |
daniele | 3:b4047e8a0123 | 261 | settings->pool_end = (settings->my_ip.addr & settings->netmask.addr) | POOL_END; |
daniele | 3:b4047e8a0123 | 262 | dhcpd_dbg("DHCPD: using pool_end %x\n", long_be(settings->pool_end)); |
daniele | 3:b4047e8a0123 | 263 | if (settings->lease_time == 0) |
daniele | 3:b4047e8a0123 | 264 | settings->lease_time = LEASE_TIME; |
daniele | 3:b4047e8a0123 | 265 | dhcpd_dbg("DHCPD: using lease time %x\n", long_be(settings->lease_time)); |
daniele | 3:b4047e8a0123 | 266 | settings->pool_next = settings->pool_start; |
daniele | 3:b4047e8a0123 | 267 | |
daniele | 3:b4047e8a0123 | 268 | settings->s = pico_socket_open(PICO_PROTO_IPV4, PICO_PROTO_UDP, &pico_dhcpd_wakeup); |
daniele | 3:b4047e8a0123 | 269 | if (!settings->s) { |
daniele | 3:b4047e8a0123 | 270 | dhcpd_dbg("DHCP: could not open client socket\n"); |
daniele | 3:b4047e8a0123 | 271 | pico_free(settings); |
daniele | 3:b4047e8a0123 | 272 | return -1; |
daniele | 3:b4047e8a0123 | 273 | } |
daniele | 3:b4047e8a0123 | 274 | if (pico_socket_bind(settings->s, &settings->my_ip, &port) != 0) { |
daniele | 3:b4047e8a0123 | 275 | dhcpd_dbg("DHCP: could not bind server socket (%s)\n", strerror(pico_err)); |
daniele | 3:b4047e8a0123 | 276 | pico_free(settings); |
daniele | 3:b4047e8a0123 | 277 | return -1; |
daniele | 3:b4047e8a0123 | 278 | } |
daniele | 3:b4047e8a0123 | 279 | |
daniele | 3:b4047e8a0123 | 280 | if (pico_tree_insert(&DHCPSettings, settings)) { |
daniele | 3:b4047e8a0123 | 281 | dhcpd_dbg("DHCPD ERROR: link %s already configured\n", link->dev->name); |
daniele | 3:b4047e8a0123 | 282 | pico_err = PICO_ERR_EINVAL; |
daniele | 3:b4047e8a0123 | 283 | pico_free(settings); |
daniele | 3:b4047e8a0123 | 284 | return -1; /* Element key already exists */ |
daniele | 3:b4047e8a0123 | 285 | } |
daniele | 3:b4047e8a0123 | 286 | dhcpd_dbg("DHCPD: configured DHCP server for link %s\n", link->dev->name); |
daniele | 3:b4047e8a0123 | 287 | |
daniele | 3:b4047e8a0123 | 288 | return 0; |
daniele | 3:b4047e8a0123 | 289 | } |
daniele | 3:b4047e8a0123 | 290 | #endif /* PICO_SUPPORT_DHCP */ |