EthernetNetIf.cpp

00001 #pragma diag_remark 1464
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(const char* hostname) : LwipNetIf(), m_ethArpTimer(), m_dhcpCoarseTimer(), m_dhcpFineTimer(), m_igmpTimer(), m_pNetIf(NULL),
00041 m_netmask(255,255,255,255), m_gateway(), m_hostname(hostname)
00042 {
00043   //m_hostname = NULL;
00044   m_pNetIf = new netif;
00045   m_useDhcp = true;
00046   m_pDhcp = new dhcp;
00047   m_setup = false;
00048 }
00049 
00050 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
00051 {
00052   m_hostname = NULL;
00053   m_netmask = netmask;
00054   m_gateway = gateway;
00055   m_ip = ip;
00056   m_pNetIf = new netif;
00057   dns_setserver(0, &dns.getStruct());
00058   m_useDhcp = false;
00059   m_setup = false;
00060 }
00061 
00062 EthernetNetIf::~EthernetNetIf()
00063 {
00064   if(m_pNetIf)
00065   {
00066     igmp_stop(m_pNetIf); //Stop IGMP processing
00067     netif_set_down(m_pNetIf);
00068     netif_remove(m_pNetIf);
00069     delete m_pNetIf;
00070     eth_free();
00071   }
00072   
00073   if (m_pDhcp)
00074     delete m_pDhcp;
00075 }
00076   
00077 EthernetErr EthernetNetIf::setup(int timeout_ms /*= 15000*/)
00078 {
00079   if (m_setup)
00080   {
00081     igmp_stop(m_pNetIf);
00082     netif_set_down(m_pNetIf);
00083     netif_remove(m_pNetIf);
00084     delete m_pNetIf;
00085     eth_free();
00086     m_pNetIf = new netif;
00087   }
00088 
00089   LwipNetIf::init();
00090   //m_ethArpTicker.attach_us(&etharp_tmr,  ARP_TMR_INTERVAL  * 1000); // = 5s in etharp.h
00091   m_ethArpTimer.start();
00092   if(m_useDhcp)
00093   {
00094     //m_dhcpCoarseTicker.attach(&dhcp_coarse_tmr, DHCP_COARSE_TIMER_SECS); // = 60s in dhcp.h
00095     //m_dhcpFineTicker.attach_us(&dhcp_fine_tmr, DHCP_FINE_TIMER_MSECS * 1000); // = 500ms in dhcp.h
00096     m_dhcpCoarseTimer.start();
00097     m_dhcpFineTimer.start();
00098   }
00099   m_pNetIf->hwaddr_len = ETHARP_HWADDR_LEN; //6
00100   eth_address((char *)m_pNetIf->hwaddr);
00101   
00102   DBG("HW Addr is : %02x:%02x:%02x:%02x:%02x:%02x.\n", 
00103   m_pNetIf->hwaddr[0], m_pNetIf->hwaddr[1], m_pNetIf->hwaddr[2],
00104   m_pNetIf->hwaddr[3], m_pNetIf->hwaddr[4], m_pNetIf->hwaddr[5]);
00105 
00106   m_pNetIf = netif_add(m_pNetIf, &(m_ip.getStruct()), &(m_netmask.getStruct()), &(m_gateway.getStruct()), NULL, eth_init, ip_input);//ethernet_input);// ip_input);
00107   m_pNetIf->hostname = (char *)m_hostname;
00108   netif_set_default(m_pNetIf);
00109   
00110   //DBG("\r\nStarting DHCP.\r\n");
00111   
00112   if(m_useDhcp)
00113   {
00114     dhcp_set_struct(m_pNetIf, m_pDhcp);
00115     dhcp_start(m_pNetIf);
00116     DBG("DHCP Started, waiting for IP...\n");
00117   }
00118   else
00119   {
00120     netif_set_up(m_pNetIf);
00121   }
00122   
00123   Timer timeout;
00124   timeout.start();
00125   while( !netif_is_up(m_pNetIf) ) //Wait until device is up
00126   {
00127     if(m_useDhcp)
00128     {
00129       if(m_dhcpFineTimer.read_ms()>=DHCP_FINE_TIMER_MSECS)
00130       {
00131         m_dhcpFineTimer.reset();
00132         dhcp_fine_tmr();
00133       }
00134       if(m_dhcpCoarseTimer.read()>=DHCP_COARSE_TIMER_SECS)
00135       {
00136         m_dhcpCoarseTimer.reset();
00137         dhcp_coarse_tmr();
00138       }
00139     }
00140     poll();
00141     if( timeout.read_ms() > timeout_ms )
00142     {
00143       //Abort
00144       if(m_useDhcp)
00145         dhcp_stop(m_pNetIf);
00146       else
00147         netif_set_down(m_pNetIf);
00148       DBG("\r\nTimeout.\r\n");
00149       m_setup = true;
00150       return ETH_TIMEOUT;
00151     }
00152   }
00153   
00154   #if LWIP_IGMP
00155   igmp_start(m_pNetIf); //Start IGMP processing
00156   #endif
00157   
00158   m_ip = IpAddr(&(m_pNetIf->ip_addr));
00159    
00160   DBG("Connected, IP : %d.%d.%d.%d\n", m_ip[0], m_ip[1], m_ip[2], m_ip[3]);
00161   
00162   m_setup = true;
00163   return ETH_OK;
00164 }
00165 
00166 void EthernetNetIf::poll()
00167 {
00168   if(m_ethArpTimer.read_ms()>=ARP_TMR_INTERVAL)
00169   {
00170     m_ethArpTimer.reset();
00171     etharp_tmr();
00172   }
00173   #if LWIP_IGMP
00174   if(m_igmpTimer.read_ms()>=IGMP_TMR_INTERVAL)
00175   {
00176     m_igmpTimer.reset();
00177     igmp_tmr();
00178   }
00179   #endif
00180   LwipNetIf::poll();
00181   eth_poll();
00182 }
00183 
00184 const char* EthernetNetIf::getHwAddr() const {
00185     return (char*)m_pNetIf->hwaddr;
00186 }
00187 
00188 const char* EthernetNetIf::getHostname() const {
00189     return m_hostname;
00190 }
00191 
00192 #endif