Cleanup core/net/ip
This commit is contained in:
Simon Duquennoy
parent
30bb899f7c
commit
145223181c
@ -1,431 +0,0 @@
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/*
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* Copyright (c) 2005, Swedish Institute of Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "contiki.h"
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#include "contiki-net.h"
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#include "net/ip/dhcpc.h"
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#define STATE_INITIAL 0
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#define STATE_SENDING 1
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#define STATE_OFFER_RECEIVED 2
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#define STATE_CONFIG_RECEIVED 3
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static struct dhcpc_state s;
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struct dhcp_msg {
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uint8_t op, htype, hlen, hops;
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uint8_t xid[4];
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uint16_t secs, flags;
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uint8_t ciaddr[4];
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uint8_t yiaddr[4];
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uint8_t siaddr[4];
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uint8_t giaddr[4];
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uint8_t chaddr[16];
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#ifndef UIP_CONF_DHCP_LIGHT
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uint8_t sname[64];
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uint8_t file[128];
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#endif
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uint8_t options[312];
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};
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#define BOOTP_BROADCAST 0x8000
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#define DHCP_REQUEST 1
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#define DHCP_REPLY 2
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#define DHCP_HTYPE_ETHERNET 1
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#define DHCP_HLEN_ETHERNET 6
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#define DHCP_MSG_LEN 236
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#define DHCPC_SERVER_PORT 67
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#define DHCPC_CLIENT_PORT 68
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#define DHCPDISCOVER 1
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#define DHCPOFFER 2
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#define DHCPREQUEST 3
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#define DHCPDECLINE 4
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#define DHCPACK 5
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#define DHCPNAK 6
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#define DHCPRELEASE 7
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#define DHCP_OPTION_SUBNET_MASK 1
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#define DHCP_OPTION_ROUTER 3
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#define DHCP_OPTION_DNS_SERVER 6
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#define DHCP_OPTION_REQ_IPADDR 50
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#define DHCP_OPTION_LEASE_TIME 51
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#define DHCP_OPTION_MSG_TYPE 53
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#define DHCP_OPTION_SERVER_ID 54
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#define DHCP_OPTION_REQ_LIST 55
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#define DHCP_OPTION_END 255
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static uint32_t xid;
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static const uint8_t magic_cookie[4] = {99, 130, 83, 99};
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/*---------------------------------------------------------------------------*/
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static uint8_t *
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add_msg_type(uint8_t *optptr, uint8_t type)
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{
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*optptr++ = DHCP_OPTION_MSG_TYPE;
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*optptr++ = 1;
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*optptr++ = type;
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return optptr;
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t *
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add_server_id(uint8_t *optptr)
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{
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*optptr++ = DHCP_OPTION_SERVER_ID;
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*optptr++ = 4;
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memcpy(optptr, s.serverid, 4);
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return optptr + 4;
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t *
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add_req_ipaddr(uint8_t *optptr)
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{
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*optptr++ = DHCP_OPTION_REQ_IPADDR;
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*optptr++ = 4;
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memcpy(optptr, s.ipaddr.u16, 4);
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return optptr + 4;
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t *
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add_req_options(uint8_t *optptr)
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{
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*optptr++ = DHCP_OPTION_REQ_LIST;
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*optptr++ = 3;
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*optptr++ = DHCP_OPTION_SUBNET_MASK;
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*optptr++ = DHCP_OPTION_ROUTER;
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*optptr++ = DHCP_OPTION_DNS_SERVER;
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return optptr;
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t *
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add_end(uint8_t *optptr)
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{
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*optptr++ = DHCP_OPTION_END;
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return optptr;
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}
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/*---------------------------------------------------------------------------*/
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static void
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create_msg(CC_REGISTER_ARG struct dhcp_msg *m)
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{
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m->op = DHCP_REQUEST;
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m->htype = DHCP_HTYPE_ETHERNET;
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m->hlen = s.mac_len;
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m->hops = 0;
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memcpy(m->xid, &xid, sizeof(m->xid));
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m->secs = 0;
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m->flags = UIP_HTONS(BOOTP_BROADCAST); /* Broadcast bit. */
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/* uip_ipaddr_copy(m->ciaddr, uip_hostaddr);*/
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memcpy(m->ciaddr, uip_hostaddr.u16, sizeof(m->ciaddr));
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memset(m->yiaddr, 0, sizeof(m->yiaddr));
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memset(m->siaddr, 0, sizeof(m->siaddr));
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memset(m->giaddr, 0, sizeof(m->giaddr));
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memcpy(m->chaddr, s.mac_addr, s.mac_len);
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memset(&m->chaddr[s.mac_len], 0, sizeof(m->chaddr) - s.mac_len);
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#ifndef UIP_CONF_DHCP_LIGHT
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memset(m->sname, 0, sizeof(m->sname));
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memset(m->file, 0, sizeof(m->file));
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#endif
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memcpy(m->options, magic_cookie, sizeof(magic_cookie));
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}
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/*---------------------------------------------------------------------------*/
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static void
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send_discover(void)
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{
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uint8_t *end;
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struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
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create_msg(m);
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end = add_msg_type(&m->options[4], DHCPDISCOVER);
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end = add_req_options(end);
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end = add_end(end);
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uip_send(uip_appdata, (int)(end - (uint8_t *)uip_appdata));
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}
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/*---------------------------------------------------------------------------*/
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static void
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send_request(void)
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{
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uint8_t *end;
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struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
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create_msg(m);
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end = add_msg_type(&m->options[4], DHCPREQUEST);
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end = add_server_id(end);
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end = add_req_ipaddr(end);
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end = add_end(end);
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uip_send(uip_appdata, (int)(end - (uint8_t *)uip_appdata));
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t
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parse_options(uint8_t *optptr, int len)
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{
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uint8_t *end = optptr + len;
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uint8_t type = 0;
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while(optptr < end) {
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switch(*optptr) {
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case DHCP_OPTION_SUBNET_MASK:
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memcpy(s.netmask.u16, optptr + 2, 4);
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break;
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case DHCP_OPTION_ROUTER:
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memcpy(s.default_router.u16, optptr + 2, 4);
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break;
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case DHCP_OPTION_DNS_SERVER:
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memcpy(s.dnsaddr.u16, optptr + 2, 4);
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break;
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case DHCP_OPTION_MSG_TYPE:
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type = *(optptr + 2);
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break;
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case DHCP_OPTION_SERVER_ID:
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memcpy(s.serverid, optptr + 2, 4);
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break;
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case DHCP_OPTION_LEASE_TIME:
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memcpy(s.lease_time, optptr + 2, 4);
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break;
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case DHCP_OPTION_END:
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return type;
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}
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optptr += optptr[1] + 2;
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}
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return type;
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t
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parse_msg(void)
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{
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struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
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if(m->op == DHCP_REPLY &&
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memcmp(m->xid, &xid, sizeof(xid)) == 0 &&
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memcmp(m->chaddr, s.mac_addr, s.mac_len) == 0) {
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memcpy(s.ipaddr.u16, m->yiaddr, 4);
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return parse_options(&m->options[4], uip_datalen());
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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/*
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* Is this a "fresh" reply for me? If it is, return the type.
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*/
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static int
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msg_for_me(void)
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{
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struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
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uint8_t *optptr = &m->options[4];
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uint8_t *end = (uint8_t*)uip_appdata + uip_datalen();
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if(m->op == DHCP_REPLY &&
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memcmp(m->xid, &xid, sizeof(xid)) == 0 &&
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memcmp(m->chaddr, s.mac_addr, s.mac_len) == 0) {
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while(optptr < end) {
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if(*optptr == DHCP_OPTION_MSG_TYPE) {
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return *(optptr + 2);
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} else if (*optptr == DHCP_OPTION_END) {
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return -1;
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}
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optptr += optptr[1] + 2;
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}
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}
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return -1;
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(handle_dhcp(process_event_t ev, void *data))
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{
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clock_time_t ticks;
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PT_BEGIN(&s.pt);
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init:
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xid++;
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s.state = STATE_SENDING;
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s.ticks = CLOCK_SECOND;
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while (1) {
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while(ev != tcpip_event) {
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tcpip_poll_udp(s.conn);
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PT_YIELD(&s.pt);
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}
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send_discover();
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etimer_set(&s.etimer, s.ticks);
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do {
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PT_YIELD(&s.pt);
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if(ev == tcpip_event && uip_newdata() && msg_for_me() == DHCPOFFER) {
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parse_msg();
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s.state = STATE_OFFER_RECEIVED;
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goto selecting;
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}
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} while (!etimer_expired(&s.etimer));
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if(s.ticks < CLOCK_SECOND * 60) {
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s.ticks *= 2;
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}
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}
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selecting:
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s.ticks = CLOCK_SECOND;
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do {
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while(ev != tcpip_event) {
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tcpip_poll_udp(s.conn);
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PT_YIELD(&s.pt);
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}
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send_request();
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etimer_set(&s.etimer, s.ticks);
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do {
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PT_YIELD(&s.pt);
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if(ev == tcpip_event && uip_newdata() && msg_for_me() == DHCPACK) {
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parse_msg();
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s.state = STATE_CONFIG_RECEIVED;
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goto bound;
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}
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} while (!etimer_expired(&s.etimer));
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if(s.ticks <= CLOCK_SECOND * 10) {
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s.ticks += CLOCK_SECOND;
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} else {
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goto init;
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}
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} while(s.state != STATE_CONFIG_RECEIVED);
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bound:
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#if 0
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printf("Got IP address %d.%d.%d.%d\n", uip_ipaddr_to_quad(&s.ipaddr));
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printf("Got netmask %d.%d.%d.%d\n", uip_ipaddr_to_quad(&s.netmask));
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printf("Got DNS server %d.%d.%d.%d\n", uip_ipaddr_to_quad(&s.dnsaddr));
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printf("Got default router %d.%d.%d.%d\n",
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uip_ipaddr_to_quad(&s.default_router));
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printf("Lease expires in %ld seconds\n",
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uip_ntohs(s.lease_time[0])*65536ul + uip_ntohs(s.lease_time[1]));
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#endif
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dhcpc_configured(&s);
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#define MAX_TICKS (~((clock_time_t)0) / 2)
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#define MAX_TICKS32 (~((uint32_t)0))
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#define IMIN(a, b) ((a) < (b) ? (a) : (b))
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if((uip_ntohs(s.lease_time[0])*65536ul + uip_ntohs(s.lease_time[1]))*CLOCK_SECOND/2
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<= MAX_TICKS32) {
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s.ticks = (uip_ntohs(s.lease_time[0])*65536ul + uip_ntohs(s.lease_time[1])
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)*CLOCK_SECOND/2;
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} else {
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s.ticks = MAX_TICKS32;
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}
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while(s.ticks > 0) {
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ticks = IMIN(s.ticks, MAX_TICKS);
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s.ticks -= ticks;
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etimer_set(&s.etimer, ticks);
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PT_YIELD_UNTIL(&s.pt, etimer_expired(&s.etimer));
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}
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if((uip_ntohs(s.lease_time[0])*65536ul + uip_ntohs(s.lease_time[1]))*CLOCK_SECOND/2
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<= MAX_TICKS32) {
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s.ticks = (uip_ntohs(s.lease_time[0])*65536ul + uip_ntohs(s.lease_time[1])
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)*CLOCK_SECOND/2;
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} else {
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s.ticks = MAX_TICKS32;
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}
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/* renewing: */
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do {
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while(ev != tcpip_event) {
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tcpip_poll_udp(s.conn);
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PT_YIELD(&s.pt);
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}
|
|
||||||
send_request();
|
|
||||||
ticks = IMIN(s.ticks / 2, MAX_TICKS);
|
|
||||||
s.ticks -= ticks;
|
|
||||||
etimer_set(&s.etimer, ticks);
|
|
||||||
do {
|
|
||||||
PT_YIELD(&s.pt);
|
|
||||||
if(ev == tcpip_event && uip_newdata() && msg_for_me() == DHCPACK) {
|
|
||||||
parse_msg();
|
|
||||||
goto bound;
|
|
||||||
}
|
|
||||||
} while(!etimer_expired(&s.etimer));
|
|
||||||
} while(s.ticks >= CLOCK_SECOND*3);
|
|
||||||
|
|
||||||
/* rebinding: */
|
|
||||||
|
|
||||||
/* lease_expired: */
|
|
||||||
dhcpc_unconfigured(&s);
|
|
||||||
goto init;
|
|
||||||
|
|
||||||
PT_END(&s.pt);
|
|
||||||
}
|
|
||||||
/*---------------------------------------------------------------------------*/
|
|
||||||
void
|
|
||||||
dhcpc_init(const void *mac_addr, int mac_len)
|
|
||||||
{
|
|
||||||
uip_ipaddr_t addr;
|
|
||||||
|
|
||||||
s.mac_addr = mac_addr;
|
|
||||||
s.mac_len = mac_len;
|
|
||||||
|
|
||||||
s.state = STATE_INITIAL;
|
|
||||||
uip_ipaddr(&addr, 255,255,255,255);
|
|
||||||
s.conn = udp_new(&addr, UIP_HTONS(DHCPC_SERVER_PORT), NULL);
|
|
||||||
if(s.conn != NULL) {
|
|
||||||
udp_bind(s.conn, UIP_HTONS(DHCPC_CLIENT_PORT));
|
|
||||||
}
|
|
||||||
PT_INIT(&s.pt);
|
|
||||||
}
|
|
||||||
/*---------------------------------------------------------------------------*/
|
|
||||||
void
|
|
||||||
dhcpc_appcall(process_event_t ev, void *data)
|
|
||||||
{
|
|
||||||
if(ev == tcpip_event || ev == PROCESS_EVENT_TIMER) {
|
|
||||||
handle_dhcp(ev, data);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
/*---------------------------------------------------------------------------*/
|
|
||||||
void
|
|
||||||
dhcpc_request(void)
|
|
||||||
{
|
|
||||||
uip_ipaddr_t ipaddr;
|
|
||||||
|
|
||||||
if(s.state == STATE_INITIAL) {
|
|
||||||
uip_ipaddr(&ipaddr, 0,0,0,0);
|
|
||||||
uip_sethostaddr(&ipaddr);
|
|
||||||
handle_dhcp(PROCESS_EVENT_NONE, NULL);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
/*---------------------------------------------------------------------------*/
|
|
||||||
@ -1,62 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright (c) 2005, Swedish Institute of Computer Science
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions
|
|
||||||
* are met:
|
|
||||||
* 1. Redistributions of source code must retain the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer in the
|
|
||||||
* documentation and/or other materials provided with the distribution.
|
|
||||||
* 3. Neither the name of the Institute nor the names of its contributors
|
|
||||||
* may be used to endorse or promote products derived from this software
|
|
||||||
* without specific prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
||||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
||||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
||||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
||||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
||||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
||||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
||||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
||||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
||||||
* SUCH DAMAGE.
|
|
||||||
*
|
|
||||||
* This file is part of the Contiki operating system.
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
#ifndef DHCPC_H_
|
|
||||||
#define DHCPC_H_
|
|
||||||
|
|
||||||
struct dhcpc_state {
|
|
||||||
struct pt pt;
|
|
||||||
char state;
|
|
||||||
struct uip_udp_conn *conn;
|
|
||||||
struct etimer etimer;
|
|
||||||
uint32_t ticks;
|
|
||||||
const void *mac_addr;
|
|
||||||
int mac_len;
|
|
||||||
|
|
||||||
uint8_t serverid[4];
|
|
||||||
|
|
||||||
uint16_t lease_time[2];
|
|
||||||
uip_ipaddr_t ipaddr;
|
|
||||||
uip_ipaddr_t netmask;
|
|
||||||
uip_ipaddr_t dnsaddr;
|
|
||||||
uip_ipaddr_t default_router;
|
|
||||||
};
|
|
||||||
|
|
||||||
void dhcpc_init(const void *mac_addr, int mac_len);
|
|
||||||
void dhcpc_request(void);
|
|
||||||
|
|
||||||
void dhcpc_appcall(process_event_t ev, void *data);
|
|
||||||
|
|
||||||
/* Mandatory callbacks provided by the user. */
|
|
||||||
void dhcpc_configured(const struct dhcpc_state *s);
|
|
||||||
void dhcpc_unconfigured(const struct dhcpc_state *s);
|
|
||||||
|
|
||||||
#endif /* DHCPC_H_ */
|
|
||||||
@ -1,203 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright (c) 2001, Adam Dunkels.
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions
|
|
||||||
* are met:
|
|
||||||
* 1. Redistributions of source code must retain the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer in the
|
|
||||||
* documentation and/or other materials provided with the distribution.
|
|
||||||
* 3. The name of the author may not be used to endorse or promote
|
|
||||||
* products derived from this software without specific prior
|
|
||||||
* written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
|
||||||
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
||||||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
||||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
|
||||||
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
||||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
|
||||||
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
||||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
||||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
||||||
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
||||||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
||||||
*
|
|
||||||
* This file is part of the uIP TCP/IP stack.
|
|
||||||
*
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* \file
|
|
||||||
* SLIP protocol implementation
|
|
||||||
* \author Adam Dunkels <adam@dunkels.com>
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* \addtogroup uip
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* \defgroup slip Serial Line IP (SLIP) protocol
|
|
||||||
* @{
|
|
||||||
*
|
|
||||||
* The SLIP protocol is a very simple way to transmit IP packets over
|
|
||||||
* a serial line. It does not provide any framing or error control,
|
|
||||||
* and is therefore not very widely used today.
|
|
||||||
*
|
|
||||||
* This SLIP implementation requires two functions for accessing the
|
|
||||||
* serial device: slipdev_char_poll() and slipdev_char_put(). These
|
|
||||||
* must be implemented specifically for the system on which the SLIP
|
|
||||||
* protocol is to be run.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* This is a generic implementation of the SLIP protocol over an RS232
|
|
||||||
* (serial) device.
|
|
||||||
*
|
|
||||||
* Huge thanks to Ullrich von Bassewitz <uz@cc65.org> of cc65 fame for
|
|
||||||
* and endless supply of bugfixes, insightsful comments and
|
|
||||||
* suggestions, and improvements to this code!
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include "uip.h"
|
|
||||||
#include "slipdev.h"
|
|
||||||
#include <string.h> /* For memcpy() */
|
|
||||||
|
|
||||||
#define SLIP_END 0300
|
|
||||||
#define SLIP_ESC 0333
|
|
||||||
#define SLIP_ESC_END 0334
|
|
||||||
#define SLIP_ESC_ESC 0335
|
|
||||||
|
|
||||||
static uint8_t slip_buf[UIP_BUFSIZE];
|
|
||||||
|
|
||||||
static uint16_t len, tmplen;
|
|
||||||
static uint8_t lastc;
|
|
||||||
|
|
||||||
/*-----------------------------------------------------------------------------------*/
|
|
||||||
/**
|
|
||||||
* Send the packet in the uip_buf and uip_appdata buffers using the
|
|
||||||
* SLIP protocol.
|
|
||||||
*
|
|
||||||
* The first 40 bytes of the packet (the IP and TCP headers) are read
|
|
||||||
* from the uip_buf buffer, and the following bytes (the application
|
|
||||||
* data) are read from the uip_appdata buffer.
|
|
||||||
*
|
|
||||||
* \return This function will always return 0.
|
|
||||||
*/
|
|
||||||
/*-----------------------------------------------------------------------------------*/
|
|
||||||
uint8_t
|
|
||||||
slipdev_send(void)
|
|
||||||
{
|
|
||||||
uint16_t i;
|
|
||||||
uint8_t *ptr;
|
|
||||||
uint8_t c;
|
|
||||||
|
|
||||||
slipdev_char_put(SLIP_END);
|
|
||||||
|
|
||||||
ptr = &uip_buf[UIP_LLH_LEN];
|
|
||||||
for(i = 0; i < uip_len; ++i) {
|
|
||||||
c = *ptr++;
|
|
||||||
switch(c) {
|
|
||||||
case SLIP_END:
|
|
||||||
slipdev_char_put(SLIP_ESC);
|
|
||||||
slipdev_char_put(SLIP_ESC_END);
|
|
||||||
break;
|
|
||||||
case SLIP_ESC:
|
|
||||||
slipdev_char_put(SLIP_ESC);
|
|
||||||
slipdev_char_put(SLIP_ESC_ESC);
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
slipdev_char_put(c);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
slipdev_char_put(SLIP_END);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
/*-----------------------------------------------------------------------------------*/
|
|
||||||
/**
|
|
||||||
* Poll the SLIP device for an available packet.
|
|
||||||
*
|
|
||||||
* This function will poll the SLIP device to see if a packet is
|
|
||||||
* available. It uses a buffer in which all avaliable bytes from the
|
|
||||||
* RS232 interface are read into. When a full packet has been read
|
|
||||||
* into the buffer, the packet is copied into the uip_buf buffer and
|
|
||||||
* the length of the packet is returned.
|
|
||||||
*
|
|
||||||
* \return The length of the packet placed in the uip_buf buffer, or
|
|
||||||
* zero if no packet is available.
|
|
||||||
*/
|
|
||||||
/*-----------------------------------------------------------------------------------*/
|
|
||||||
uint16_t
|
|
||||||
slipdev_poll(void)
|
|
||||||
{
|
|
||||||
uint8_t c;
|
|
||||||
|
|
||||||
while(slipdev_char_poll(&c)) {
|
|
||||||
switch(c) {
|
|
||||||
case SLIP_ESC:
|
|
||||||
lastc = c;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case SLIP_END:
|
|
||||||
lastc = c;
|
|
||||||
/* End marker found, we copy our input buffer to the uip_buf
|
|
||||||
buffer and return the size of the packet we copied. */
|
|
||||||
memcpy(&uip_buf[UIP_LLH_LEN], slip_buf, len);
|
|
||||||
tmplen = len;
|
|
||||||
len = 0;
|
|
||||||
return tmplen;
|
|
||||||
|
|
||||||
default:
|
|
||||||
if(lastc == SLIP_ESC) {
|
|
||||||
lastc = c;
|
|
||||||
/* Previous read byte was an escape byte, so this byte will be
|
|
||||||
interpreted differently from others. */
|
|
||||||
switch(c) {
|
|
||||||
case SLIP_ESC_END:
|
|
||||||
c = SLIP_END;
|
|
||||||
break;
|
|
||||||
case SLIP_ESC_ESC:
|
|
||||||
c = SLIP_ESC;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
lastc = c;
|
|
||||||
}
|
|
||||||
|
|
||||||
slip_buf[len] = c;
|
|
||||||
++len;
|
|
||||||
|
|
||||||
if(len > UIP_BUFSIZE) {
|
|
||||||
len = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
/*-----------------------------------------------------------------------------------*/
|
|
||||||
/**
|
|
||||||
* Initialize the SLIP module.
|
|
||||||
*
|
|
||||||
* This function does not initialize the underlying RS232 device, but
|
|
||||||
* only the SLIP part.
|
|
||||||
*/
|
|
||||||
/*-----------------------------------------------------------------------------------*/
|
|
||||||
void
|
|
||||||
slipdev_init(void)
|
|
||||||
{
|
|
||||||
lastc = len = 0;
|
|
||||||
}
|
|
||||||
/*-----------------------------------------------------------------------------------*/
|
|
||||||
|
|
||||||
/** @} */
|
|
||||||
/** @} */
|
|
||||||
@ -1,87 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright (c) 2001, Adam Dunkels.
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions
|
|
||||||
* are met:
|
|
||||||
* 1. Redistributions of source code must retain the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer in the
|
|
||||||
* documentation and/or other materials provided with the distribution.
|
|
||||||
* 3. The name of the author may not be used to endorse or promote
|
|
||||||
* products derived from this software without specific prior
|
|
||||||
* written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
|
||||||
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
||||||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
||||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
|
||||||
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
||||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
|
||||||
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
||||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
||||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
||||||
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
||||||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
||||||
*
|
|
||||||
* This file is part of the uIP TCP/IP stack.
|
|
||||||
*
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* \file
|
|
||||||
* SLIP header file.
|
|
||||||
* \author Adam Dunkels <adam@dunkels.com>
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* \addtogroup slip
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef SLIPDEV_H_
|
|
||||||
#define SLIPDEV_H_
|
|
||||||
|
|
||||||
#include "uip.h"
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Put a character on the serial device.
|
|
||||||
*
|
|
||||||
* This function is used by the SLIP implementation to put a character
|
|
||||||
* on the serial device. It must be implemented specifically for the
|
|
||||||
* system on which the SLIP implementation is to be run.
|
|
||||||
*
|
|
||||||
* \param c The character to be put on the serial device.
|
|
||||||
*/
|
|
||||||
void slipdev_char_put(uint8_t c);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Poll the serial device for a character.
|
|
||||||
*
|
|
||||||
* This function is used by the SLIP implementation to poll the serial
|
|
||||||
* device for a character. It must be implemented specifically for the
|
|
||||||
* system on which the SLIP implementation is to be run.
|
|
||||||
*
|
|
||||||
* The function should return immediately regardless if a character is
|
|
||||||
* available or not. If a character is available it should be placed
|
|
||||||
* at the memory location pointed to by the pointer supplied by the
|
|
||||||
* argument c.
|
|
||||||
*
|
|
||||||
* \param c A pointer to a byte that is filled in by the function with
|
|
||||||
* the received character, if available.
|
|
||||||
*
|
|
||||||
* \retval 0 If no character is available.
|
|
||||||
* \retval Non-zero If a character is available.
|
|
||||||
*/
|
|
||||||
uint8_t slipdev_char_poll(uint8_t *c);
|
|
||||||
|
|
||||||
void slipdev_init(void);
|
|
||||||
uint8_t slipdev_send(void);
|
|
||||||
uint16_t slipdev_poll(void);
|
|
||||||
|
|
||||||
#endif /* SLIPDEV_H_ */
|
|
||||||
|
|
||||||
/** @} */
|
|
||||||
@ -73,7 +73,7 @@
|
|||||||
|
|
||||||
#include "sys/cc.h"
|
#include "sys/cc.h"
|
||||||
#include "net/ip/uip.h"
|
#include "net/ip/uip.h"
|
||||||
#include "net/ip/uip_arch.h"
|
#include "net/ip/uip-arch.h"
|
||||||
#include "net/ip/uipopt.h"
|
#include "net/ip/uipopt.h"
|
||||||
#include "net/ipv6/uip-icmp6.h"
|
#include "net/ipv6/uip-icmp6.h"
|
||||||
#include "net/ipv6/uip-nd6.h"
|
#include "net/ipv6/uip-nd6.h"
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user