EthernetNetIf.cpp

00001 
00002 /*
00003 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
00004  
00005 Permission is hereby granted, free of charge, to any person obtaining a copy
00006 of this software and associated documentation files (the "Software"), to deal
00007 in the Software without restriction, including without limitation the rights
00008 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 copies of the Software, and to permit persons to whom the Software is
00010 furnished to do so, subject to the following conditions:
00011  
00012 The above copyright notice and this permission notice shall be included in
00013 all copies or substantial portions of the Software.
00014  
00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 THE SOFTWARE.
00022 */
00023 
00024 #include "EthernetNetIf.h"
00025 
00026 #include "netif/etharp.h"
00027 #include "lwip/dhcp.h "
00028 #include "lwip/dns.h"
00029 #include "lwip/igmp.h"
00030 
00031 #include "drv/eth/eth_drv.h"
00032 #include "mbed.h"
00033 
00034 #define __DEBUG
00035 #include "dbg/dbg.h"
00036 
00037 #include "netCfg.h"
00038 #if NET_ETH
00039 
00040 EthernetNetIf::EthernetNetIf() : LwipNetIf(), m_ethArpTimer(), m_dhcpCoarseTimer(), m_dhcpFineTimer(), m_igmpTimer(), m_pNetIf(NULL),
00041 m_netmask(255,255,255,255), m_gateway(), m_hostname(NULL)
00042 {
00043   m_hostname = NULL;
00044   m_pNetIf = new netif;
00045   m_useDhcp = true;
00046 }
00047 
00048 EthernetNetIf::EthernetNetIf(IpAddr ip, IpAddr netmask, IpAddr gateway, IpAddr dns) : LwipNetIf(), m_ethArpTimer(), m_dhcpCoarseTimer(), m_dhcpFineTimer(), m_igmpTimer(), m_pNetIf(NULL), m_hostname(NULL) //W/o DHCP
00049 {
00050   m_hostname = NULL;
00051   m_netmask = netmask;
00052   m_gateway = gateway;
00053   m_ip = ip;
00054   m_pNetIf = new netif;
00055   dns_setserver(0, &dns.getStruct());
00056   m_useDhcp = false;
00057 }
00058 
00059 EthernetNetIf::~EthernetNetIf()
00060 {
00061   if(m_pNetIf)
00062   {
00063     igmp_stop(m_pNetIf); //Stop IGMP processing
00064     netif_set_down(m_pNetIf);
00065     netif_remove(m_pNetIf);
00066     delete m_pNetIf;
00067     eth_free();
00068   }
00069 }
00070   
00071 EthernetErr EthernetNetIf::setup(int timeout_ms /*= 15000*/)
00072 {
00073   LwipNetIf::init();
00074   //m_ethArpTicker.attach_us(&etharp_tmr,  ARP_TMR_INTERVAL  * 1000); // = 5s in etharp.h
00075   m_ethArpTimer.start();
00076   if(m_useDhcp)
00077   {
00078     //m_dhcpCoarseTicker.attach(&dhcp_coarse_tmr, DHCP_COARSE_TIMER_SECS); // = 60s in dhcp.h
00079     //m_dhcpFineTicker.attach_us(&dhcp_fine_tmr, DHCP_FINE_TIMER_MSECS * 1000); // = 500ms in dhcp.h
00080     m_dhcpCoarseTimer.start();
00081     m_dhcpFineTimer.start();
00082   }
00083   m_pNetIf->hwaddr_len = ETHARP_HWADDR_LEN; //6
00084   eth_address((char *)m_pNetIf->hwaddr);
00085   
00086   DBG("HW Addr is : %02x:%02x:%02x:%02x:%02x:%02x.\n", 
00087   m_pNetIf->hwaddr[0], m_pNetIf->hwaddr[1], m_pNetIf->hwaddr[2],
00088   m_pNetIf->hwaddr[3], m_pNetIf->hwaddr[4], m_pNetIf->hwaddr[5]);
00089 
00090   m_pNetIf = netif_add(m_pNetIf, &(m_ip.getStruct()), &(m_netmask.getStruct()), &(m_gateway.getStruct()), NULL, eth_init, ip_input);//ethernet_input);// ip_input);
00091   //m_pNetIf->hostname = "mbedDG";//(char *)m_hostname; //Not used for now
00092   netif_set_default(m_pNetIf);
00093   
00094   //DBG("\r\nStarting DHCP.\r\n");
00095   
00096   if(m_useDhcp)
00097   {
00098     dhcp_start(m_pNetIf);
00099     DBG("DHCP Started, waiting for IP...\n");
00100   }
00101   else
00102   {
00103     netif_set_up(m_pNetIf);
00104   }
00105   
00106   Timer timeout;
00107   timeout.start();
00108   while( !netif_is_up(m_pNetIf) ) //Wait until device is up
00109   {
00110     if(m_useDhcp)
00111     {
00112       if(m_dhcpFineTimer.read_ms()>=DHCP_FINE_TIMER_MSECS)
00113       {
00114         m_dhcpFineTimer.reset();
00115         dhcp_fine_tmr();
00116       }
00117       if(m_dhcpCoarseTimer.read()>=DHCP_COARSE_TIMER_SECS)
00118       {
00119         m_dhcpCoarseTimer.reset();
00120         dhcp_coarse_tmr();
00121       }
00122     }
00123     poll();
00124     if( timeout.read_ms() > timeout_ms )
00125     {
00126       //Abort
00127       if(m_useDhcp)
00128         dhcp_stop(m_pNetIf);
00129       else
00130         netif_set_down(m_pNetIf);
00131       DBG("\r\nTimeout.\r\n");
00132       return ETH_TIMEOUT;
00133     }
00134   }
00135   
00136   #if LWIP_IGMP
00137   igmp_start(m_pNetIf); //Start IGMP processing
00138   #endif
00139   
00140   m_ip = IpAddr(&(m_pNetIf->ip_addr));
00141    
00142   DBG("Connected, IP : %d.%d.%d.%d\n", m_ip[0], m_ip[1], m_ip[2], m_ip[3]);
00143   
00144   return ETH_OK;
00145 }
00146 
00147 void EthernetNetIf::poll()
00148 {
00149   if(m_ethArpTimer.read_ms()>=ARP_TMR_INTERVAL)
00150   {
00151     m_ethArpTimer.reset();
00152     etharp_tmr();
00153   }
00154   #if LWIP_IGMP
00155   if(m_igmpTimer.read_ms()>=IGMP_TMR_INTERVAL)
00156   {
00157     m_igmpTimer.reset();
00158     igmp_tmr();
00159   }
00160   #endif
00161   LwipNetIf::poll();
00162   eth_poll();
00163 }
00164 
00165 #endif