FireFly + LWIP + Opencores EMAC problems

[Altera_Forum]

Hi All, 

 I'm trying to establish a TCP-connection between Firefly dev.Kit (client) and my laptop (server). I'm using Microtronix Firefly dev.kit, opencores ethernet EMAC (microtronix also) and LWIP (microtronix also). I have gonfigured the example software project lwip_web_server so that only static IP address option is ON and the DHCP is OFF. The static IP address for Firefly-module is configured succesfully but there is a problem to establish a tcp-socket connection between Firefly-module and laptop.   I have sniffed ETH traffic between client and server and I noticed that the client finds the server and sends only TCP SYN -messages. The server replies with SYN-ACK messages, but the client doesn't get those messages because it doesn't anwer to those messages with ACK-messages. It looks like the client can't receive any messages.  Regards, CoolMan

[Altera_Forum]

Hi, 

I have the same situation. If i turn on DHCP that will be fine, except getting failure from DHCP server. So, i use static IP and trun off DHCP but it doesn't work. I also use Microtronix Ethernet-USB expansion board and Mircotronix LWIP.  Does anyone can help me to solve this?  Best Regards, Sam

[Altera_Forum]

Hi Sam, 

 I have solved the problem by fixing the code of the network_utilities.c file of lwip_webserver example. The updated code listing of functions get_ip_addr and dhcp_timeout_task are listed below. Updated parts of the file are between "/********************/" -rows.  The bug was that if static ip was used there wasn&#39;t any eth adapter working as default eth-interface. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/ohmy.gif   Regards,  CoolMan  ----------------------UPDATED CODE START-------------------------------  int get_ip_addr(alt_lwip_dev* lwip_dev, struct ip_addr* ipaddr,   struct ip_addr* netmask, struct ip_addr* gw,  int* use_dhcp) {  int ret_code = 0;    if (!strcmp(lwip_dev->name, "/dev/" LWIP_DEFAULT_IF))  {# if LWIP_DHCP == 1  *use_dhcp = 1;   /*  * If we are telling LWIP to attempt DHCP, all that is needed is to save   * the the LWIP device in question to a the global netif "adapter"; the   * DHCP timeout task will then querry this device to see whether an IP  * address has been set.  *   * If we are not attempting DHCP, static network settings are assigned here  * and we go on our merry way.  */  adapter = lwip_dev->netif; # ifdef LCD_DISPLAY_NAME   /* Clear the LCD screen */  fprintf(lcdDevice, "\x1b");  fprintf(lcdDevice, "[2J");  fprintf(lcdDevice, "Using DHCP to\nfind IP Addr");# endif /* LCD_DISPLAY_NAME */  printf("Using DHCP to find an IP Address\n"); # else   /***********************************************************/  //TOP 7.2.2007  adapter = lwip_dev->netif;  /***********************************************************/   IP4_ADDR(ipaddr, IPADDR0,IPADDR1,IPADDR2,IPADDR3);  IP4_ADDR(gw, GWADDR0,GWADDR1,GWADDR2,GWADDR3);  IP4_ADDR(netmask, MSKADDR0,MSKADDR1,MSKADDR2,MSKADDR3);  *use_dhcp = 0;   printf("Static IP Address is %d.%d.%d.%d\n",   ip4_addr1(ipaddr),  ip4_addr2(ipaddr),  ip4_addr3(ipaddr),  ip4_addr4(ipaddr));    /***********************************************************/  //TOP 7.2.2007  netif_set_default(adapter);  //TOP 7.2.2007  netif_set_up(adapter);  /***********************************************************/ # ifdef LCD_DISPLAY_NAME   /* Clear the LCD screen */  fprintf(lcdDevice, "\x1b");  fprintf(lcdDevice, "[2J");  fprintf(lcdDevice, "Static IP Addr\n %d.%d.%d.%d",  ip4_addr1(ipaddr),  ip4_addr2(ipaddr),  ip4_addr3(ipaddr),  ip4_addr4(ipaddr));# endif /* LCD_DISPLAY_NAME */ # endif /* LWIP_DHCP */   ret_code = 1;  }   return ret_code; }  /*  * dhcp_timeout_task()  *   * This LWIP-called routine is responsible for checking to see whether DHCP   * was sucessful. Here we check to see whether a timeout (120 seconds in this  * case) has elapsed. If so, display an error, assign a static address, and   * bail out. If not, continue checking for DHCP success and bail out once  * a DHCP address assignment is complete.  *   * This routine also displays the assigned IP address to the user (via STDOUT   * and, if equipped, LCD screen.  *   * Note: LCD_DISPLAY_NAME is defined in user.h to be the LCD interface for  * the "standard" example design.  */# if LWIP_DHCP == 1  void dhcp_timeout_task() {  static int have_address = 0, timeout_dhcp = 0;  struct ip_addr ipaddr, netmask, gw;    if (!have_address)  {  /*   * For demo purposes we need to use DHCP to allocate an IP Address  * and LWIP had no mechanism to tell us one is allocated. Wait two   * minutes if we don&#39;t have one we use a static IP address  */  if(timeout_dhcp < 120)  {  timeout_dhcp++;  if (!ip_addr_isany(&adapter->ip_addr))  {  have_address = 1;  printf("Assigned IP Address is %d.%d.%d.%d\n\n",  ip4_addr1(&adapter->ip_addr),  ip4_addr2(&adapter->ip_addr),  ip4_addr3(&adapter->ip_addr),  ip4_addr4(&adapter->ip_addr)); # ifdef LCD_DISPLAY_NAME   lcdDevice = fopen(LCD_DISPLAY_NAME, "w");  /* Clear screen */  fprintf(lcdDevice, "\x1b");  fprintf(lcdDevice, "[2J");  fprintf(lcdDevice, "DHCP IP Addr is \n %d.%d.%d.%d",  ip4_addr1(&adapter->ip_addr),  ip4_addr2(&adapter->ip_addr),  ip4_addr3(&adapter->ip_addr),  ip4_addr4(&adapter->ip_addr));  fclose(lcdDevice);# endif /* LCD_DISPLAY_NAME */  }  }  /*  * You&#39;re in a bit of trouble if this happens, you could assign a static  * IP address but how do we choose it?  */  else  {  dhcp_stop(adapter);  IP4_ADDR(&ipaddr, IPADDR0,IPADDR1,IPADDR2,IPADDR3);  IP4_ADDR(&gw, GWADDR0,GWADDR1,GWADDR2,GWADDR3);  IP4_ADDR(&netmask, MSKADDR0,MSKADDR1,MSKADDR2,MSKADDR3);    netif_set_addr( adapter,&ipaddr, &netmask, &gw);  have_address = 1;    printf("DHCP Failed to assign an IP Address\n");   printf("Using static address: %d.%d.%d.%d\n\n",  ip4_addr1(&adapter->ip_addr),  ip4_addr2(&adapter->ip_addr),  ip4_addr3(&adapter->ip_addr),  ip4_addr4(&adapter->ip_addr));      /***********************************************************/   //TOP 7.2.2007  netif_set_default(adapter);  //TOP 7.2.2007  netif_set_up(adapter);  /***********************************************************/ # ifdef LCD_DISPLAY_NAME   lcdDevice = fopen(LCD_DISPLAY_NAME, "w");  /* Clear the LCD screen */  fprintf(lcdDevice, "\x1b");  fprintf(lcdDevice, "[2J");  fprintf(lcdDevice, "DHCP Failed using\n %d.%d.%d.%d",  ip4_addr1(&adapter->ip_addr),  ip4_addr2(&adapter->ip_addr),  ip4_addr3(&adapter->ip_addr),  ip4_addr4(&adapter->ip_addr));  fclose(lcdDevice);# endif /* LCD_DISPLAY_NAME */  }  } }# endif /* LWIP_DHCP */  ----------------------UPDATED CODE END------------------------------     --- Quote Start ---  originally posted by samlittle@Jan 19 2007, 04:26 AM hi, i have the same situation. if i turn on dhcp that will be fine, except getting failure from dhcp server. so, i use static ip and trun off dhcp but it doesn&#39;t work. i also use microtronix ethernet-usb expansion board and mircotronix lwip.  does anyone can help me to solve this?  best regards, sam <div align='right'><{post_snapback}> (index.php?act=findpost&pid=20711)  --- quote end ---    --- Quote End ---