Re: [RTnet-developers] Ethernet IP

[Glen W. <gl...@je...>]

So I cab ignore the error.

In the future for compatibility reasons, you may want to return successful in there cases.

--
Glen Wernersbach
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On Dec 2, 2010, at 2:52 AM, Jan Kiszka <jan...@we...> wrote:

> Am 01.12.2010 23:34, Glen Wernersbach wrote:
>> Hi All,
>> 
>> Back at this. My program now compiles. I think I am loading all the correct
>> libraries to do just NIC, UDP and TCP with RTNET:
>>> insmod /usr/realtime/modules/rtai_hal.ko
>>> insmod /usr/realtime/modules/rtai_lxrt.ko
>>> insmod /usr/realtime/modules/rtai_sem.ko
>>> insmod /usr/realtime/modules/rtai_rtdm.ko
>>> rmmod e1000e
>>> insmod /usr/rtnet/modules/rtnet.ko
>>> insmod /usr/rtnet/modules/rtipv4.ko
>>> insmod /usr/rtnet/modules/rtpacket.ko
>>> insmod /usr/rtnet/modules/rt_loopback.ko
>>> insmod /usr/rtnet/modules/rt_e1000.ko
>>> /usr/src/rtnet-0.9.12/tools/./rtifconfig rteth1 up 192.168.0.2
>>> /usr/src/rtnet-0.9.12/tools/./rtifconfig rtlo up 127.0.0.1
>>> insmod /usr/rtnet/modules/rtudp.ko
>>> insmod /usr/rtnet/modules/rttcp.ko
>>> ./opener 192.168.0.2 255.255.255.0 192.168.0.1 test.com testdevice 00 0E 8C 9F
>>> 16 09
>> 
>> I current am not connected to a host but am just trying to debug as far as a
>> I can with this just this side. This all works until the last function:
> 
> [ Note that functional debugging is also feasible in QEMU/KVM using e.g.
> the emulated rtl8139. ]
> 
>> 
>>> /* create a new TCP socket */
>>>  if ((nTCPListener = rt_dev_socket(PF_INET, SOCK_STREAM, 0)) == -1)
>>>    {
>>>      OPENER_TRACE_ERR("error allocating socket stream listener, %d\n",
>>> errno);
>>>      return EIP_ERROR;
>>>    }
>>> 
>>>  /* create a new UDP socket */
>>>  if ((nUDPListener = rt_dev_socket(PF_INET, SOCK_DGRAM, 0)) == -1)
>>>    {
>>>      OPENER_TRACE_ERR("error allocating udp listener socket, %d\n", errno);
>>>      return EIP_ERROR;
>>>    }
>>> 
>>>  my_addr.sin_family = AF_INET;
>>>  my_addr.sin_port = htons(OPENER_ETHERNET_PORT);
>>>  my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
>>>  memset(&my_addr.sin_zero, 0, sizeof(my_addr.sin_zero));
>>> 
>>>  /* bind the new socket to port 0xAF12 (CIP) */
>>>  if ((rt_dev_bind(nTCPListener, (struct sockaddr *) &my_addr, sizeof(struct
>>> sockaddr)))
>>>      == -1)
>>>    {
>>>      OPENER_TRACE_ERR("error with bind: %d %s", errno, strerror(errno));
>>>      return EIP_ERROR;
>>>    }
>>> 
>>>  /* enable the udp socket to receive broadcast messages*/
>>>  y = 1;
>>>  if (0 > rt_dev_setsockopt(nUDPListener, SOL_SOCKET, SO_BROADCAST, &y,
>>> sizeof(int)))
>>>    {
>>>      OPENER_TRACE_ERR("error with setting broadcast receive for udp socket:
>>> %d %s", errno, strerror(errno));
>>>      return EIP_ERROR;
>>>    }
>> 
>> The above function returns ³38  function not implemented²
>> 
>> Do I need to be connected for this to work?
>> 
>> Are my load modules right?
>> 
>> Is this function really not implemented or am I doing something wrong?
>> 
>> If it is not implemented, is there a work around?
> 
> SO_BROADCAST is indeed not implemented. RT-UDP sockets have this feature
> automatically enabled.
> 
> Jan
>