sorry I am not getting you what do you mean by starting RTnet properly.
I have the following two scripts for starting RTnet and RTping and unload
the modules...
insert modules and ping.....
#!/bin/sh
rtaimoduledir="/usr/realtime/modules"
rtnetmoduledir="/usr/realtime/rtnet/modules"
insmod $rtaimoduledir/rtai_hal.ko
insmod $rtaimoduledir/rtai_lxrt.ko
insmod $rtaimoduledir/rtai_sem.ko
insmod $rtaimoduledir/rtai_fifos.ko
insmod $rtaimoduledir/rtai_rtdm.ko
rmmod e100.ko
insmod $rtnetmoduledir/rtnet.ko
insmod $rtnetmoduledir/rtipv4.ko
insmod $rtnetmoduledir/rt_loopback.ko
insmod $rtnetmoduledir/rt_eepro100.ko
/usr/realtime/rtnet/sbin/./rtifconfig rteth0 up 139.30.6.77
/usr/realtime/rtnet/sbin/./rtifconfig rtlo up 127.0.0.1
#insmod $rtnetmoduledir/rtmac.ko
/usr/realtime/rtnet/sbin/./rtroute solicit 139.30.6.66 dev rteth0
sync
/usr/realtime/rtnet/sbin/./rtping -c 3 139.30.6.66
remove modules.....
#!/bin/sh
rtaimoduledir="/usr/realtime/modules"
rtnetmoduledir="/usr/realtime/rtnet/modules"
#rmmod rtmac.ko
/usr/realtime/rtnet/sbin/./rtifconfig rteth0 down
/usr/realtime/rtnet/sbin/./rtifconfig rtlo down
rmmod rt_eepro100.ko
rmmod rt_loopback.ko
rmmod rtipv4.ko
rmmod rtnet.ko
rmmod rtai_rtdm.ko
rmmod rtai_fifos.ko
rmmod rtai_sem.ko
rmmod rtai_lxrt.ko
rmmod rtai_hal.ko
sync
modprobe e100
sync
Monotosh Das
>From: "Emanuele Clerici" <[EMAIL PROTECTED]>
>To: "Monotosh Das" <[EMAIL PROTECTED]>
>Subject: Re: [RTnet-users] Revceiving UDP/IP data in user space using RTAI
>LXRT
>Date: Fri, 19 Jan 2007 16:45:35 +0100
>
>Did you manually start rtnet or did you use provided script?
>
>If I'm right the time 0 is because you do not start rt_timer before
>doing rt_ping.
>
>Emanuele
>
>On 1/19/07, Monotosh Das <[EMAIL PROTECTED]> wrote:
>>I do not have any explanation why this lines are there... I have nothing
>>to
>>do with those IP addresses.
>>
>> >RTnet: host 222.83.167.242 unreachable
>> >RTnet: no protocol found
>> >RTnet: no protocol found
>>
>>I have particularly added the IP address that I needed in the host table
>>and
>>rtping worked correctly, though it was showing the round trip time is
>>equal
>>to 0... I do not know why... but it can ping the desired IP...
>>
>>
>>
>> >From: "Emanuele Clerici" <[EMAIL PROTECTED]>
>> >To: "Monotosh Das" <[EMAIL PROTECTED]>
>> >Subject: Re: [RTnet-users] Revceiving UDP/IP data in user space using
>>RTAI
>> >LXRT
>> >Date: Fri, 19 Jan 2007 16:32:34 +0100
>> >
>> >what about this message?
>> >RTnet: host 222.83.167.242 unreachable
>> >RTnet: no protocol found
>> >RTnet: no protocol found
>> >
>> >did you set up correctly rtnet? does rtping works fine?
>> >
>> >Emanuele
>> >
>> >On 1/19/07, Monotosh Das <[EMAIL PROTECTED]> wrote:
>> >>Sorry for the previous unexpected line wrap... this time hopefully this
>> >>will
>> >>work...
>> >>please note that I am trying to communicate periodically with an
>> >>application
>> >>running standard winsock UDP/IP socket on windows machine....Please
>> >>rectify
>> >>if I have made any fundamental error...
>> >>
>> >>The source code...
>> >>
>> >>
>> >>static struct sockaddr_in local_addr;
>> >>static struct sockaddr_in server_addr;
>> >>static void *SendRcvFun(void *arg)
>> >>{
>> >> RT_TASK *handler; //local handler
>> >> static struct {
>> >> unsigned long indx;
>> >> RTIME time;
>> >> } msg = {0,0};
>> >> int sockfd = 0;
>> >> int ret = 0;
>> >> char msgStr[100] = "Hello world";
>> >> /* Set variables to zero. */
>> >> memset(msgStr, 0, sizeof(msgStr));
>> >> memset(&local_addr, 0, sizeof (struct sockaddr_in));
>> >> memset(&server_addr, 0, sizeof(struct sockaddr_in));
>> >> printf("RTnet, simpleserver for LXRT\n");
>> >>
>> >> /* Check arguments and set addresses. */
>> >>
>> >> local_addr.sin_family = AF_INET;
>> >> local_addr.sin_addr.s_addr = INADDR_ANY;
>> >> local_addr.sin_port =
>>htons(11000);//htons(atoi(11000));
>> >>
>> >> server_addr.sin_family = AF_INET;
>> >> inet_aton("139.30.6.66", &server_addr.sin_addr);
>> >> server_addr.sin_port = htons(11000);
>> >>
>> >>
>> >> printf("SendRcv Start\n");
>> >> rtf_create(FIFO, 2000);
>> >> printf("FIFO created\n");
>> >> mlockall(MCL_CURRENT | MCL_FUTURE);
>> >> sockfd = rt_dev_socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
>> >> if (sockfd < 0) {
>> >> printf("Error opening socket: %d\n", sockfd);
>> >> exit(1);
>> >> }
>> >>
>> >> //
>> >> if (!(handler= rt_task_init_schmod(nam2num("SRTSK"), 0, 0,
>> >>0,SCHED_FIFO,
>> >>0xFF))) {
>> >> printf("CANNOT INIT SendRcvFun\n");
>> >> rt_dev_close(sockfd);
>> >> exit(1);
>> >> }
>> >> rt_set_periodic_mode();
>> >> start_rt_timer(0);
>> >> period = start_rt_timer(nano2count(TIMERTICKS));
>> >> rt_task_make_periodic(handler, rt_get_time()+period, period);
>> >>
>> >> rt_make_hard_real_time();
>> >> /* Bind socket to local address specified as parameter. */
>> >> ret = rt_dev_bind(sockfd, (struct sockaddr *) &local_addr,
>> >>sizeof(struct
>> >>sockaddr_in));
>> >> /* Specify destination address for socket; needed for
>> >>rt_socket_send().
>> >>*/
>> >> rt_dev_connect(sockfd, (struct sockaddr *) &server_addr,
>> >>sizeof(struct
>> >>sockaddr_in));
>> >> endSendRcvFun = 0;
>> >>
>> >> while (!endSendRcvFun) {
>> >> ret = rt_dev_recv(sockfd, msgStr, sizeof(msgStr),
>> >>MSG_DONTWAIT);
>> >> ret = rt_dev_send(sockfd, msgStr, sizeof(msgStr),
>> >>MSG_DONTWAIT);
>> >> msg.indx = ret;
>> >> msg.time = rt_get_time_ns();
>> >> rtf_put(FIFO, &msg, sizeof(msg));
>> >> //printk("h");
>> >> rt_task_wait_period();
>> >> }
>> >> stop_rt_timer();
>> >> rt_make_soft_real_time();
>> >> rt_dev_close(sockfd);
>> >> rt_task_delete(handler);
>> >> rtf_destroy(FIFO);
>> >> return 0;
>> >>}
>> >>
>> >>
>> >>I suspect the error occurs when I insert the code
>> >>ret = rt_dev_recv(sockfd, msgStr, sizeof(msgStr), MSG_DONTWAIT);
>> >>
>> >>The error reported by the dmesg...
>> >>
>> >>*** RTnet 0.9.8 - built on Jan 12 2007 20:25:45 ***
>> >>
>> >>RTnet: initialising real-time networking
>> >>initializing loopback...
>> >>RTnet: registered rtlo
>> >>ACPI: PCI Interrupt 0000:02:08.0[A] -> Link [LNKD] -> GSI 9 (level,
>>low)
>> >>->
>> >>IRQ 9
>> >>rteth0: OEM i82557/i82558 10/100 Ethernet, 00:30:05:08:51:74, IRQ 9.
>> >>RTnet: registered rteth0
>> >>RTnet: host 222.83.167.242 unreachable
>> >>RTnet: no protocol found
>> >>RTnet: no protocol found
>> >>RTnet: no protocol found
>> >>RTnet: no protocol found
>> >>
>> >>LXRT CHANGED MODE (TRAP), PID = 4313, VEC = 14, SIGNO = 11.
>> >>BUG: unable to handle kernel NULL pointer dereference at virtual
>>address
>> >>00000024
>> >>printing eip:
>> >>d0f666be
>> >>*pde = 00000000
>> >>Oops: 0000 [#1]
>> >>PREEMPT
>> >>Modules linked in: rt_eepro100 rt_loopback rtipv4 rtnet rtai_rtdm
>> >>rtai_fifos
>> >>rtai_sem rtai_lxrt rtai_hal button battery ac loop dm_mod bttv
>>video_buf
>> >>firmware_class ir_common compat_ioctl32 i2c_algo_bit v4l2_common
>>btcx_risc
>> >>tveeprom videodev mii intel_agp agpgart ide_cd uhci_hcd cdrom usbcore
>> >>i8xx_tco i2c_i801 shpchp i2c_core pci_hotplug parport_pc lp parport
>>ext3
>> >>mbcache jbd edd fan sg aic7xxx scsi_transport_spi piix thermal
>>processor
>> >>sd_mod scsi_mod ide_disk ide_core
>> >>CPU: 0
>> >>EIP: 0060:[<d0f666be>] Not tainted VLI
>> >>EFLAGS: 00013246 (2.6.17-RTAI #1)
>> >>EIP is at rt_udp_recvmsg+0xd6/0x1b8 [rtipv4]
>> >>eax: 00000000 ebx: cf82e5f4 ecx: 00003246 edx: 00000000
>> >>esi: 00000000 edi: ca401ee8 ebp: c60c4a90 esp: ca401e84
>> >>ds: 007b es: 007b ss: 0068
>> >>Process udpsendReceive (pid: 4313, threadinfo=ca400000 task=c60c4a90)
>> >>Stack: cf82e618 ffffffff ffffffff 00000000 cf82e618 00000064 cf82e604
>> >>cf82e5e0
>> >> 00000040 ca401ee8 c60c4a90 d0f6d666 cf82e5e0 c60c4a90 ca401ee8
>> >>00000040
>> >> fffffff2 ca401ee8 b7e1d2e0 c60c4a90 d0f6e940 c60c4a90 00000000
>> >>ca401ee8
>> >>Call Trace:
>> >><d0f6d666> _rtdm_recvmsg+0x4e/0x70 [rtai_rtdm] <d0f6e940>
>> >>sys_rtdm_recvmsg+0x5e/0x82 [rtai_rtdm]
>> >><d0f8083f> rtai_lxrt_invoke+0x151/0x10c6 [rtai_lxrt] <d0f83be3>
>> >>rt_task_make_periodic+0x0/0xed [rtai_lxrt]
>> >><d0f6e8e2> sys_rtdm_recvmsg+0x0/0x82 [rtai_rtdm] <c01176b1>
>> >>sched_setscheduler+0x22c/0x269
>> >><c0142e8d> __ipipe_dispatch_event+0x32/0x10d <d0f58053>
>> >>rtai_syscall_dispatcher+0x55/0xeb [rtai_hal]
>> >><d0f5707e> rtai_uvec_handler+0x1a/0x30 [rtai_hal]
>> >>Code: 00 8b 7c 24 14 e9 a9 00 00 00 8d 73 10 89 74 24 18 9c 59 fa 8b 73
>>10
>> >>85 f6 74 0e 8b 56 04 8b 02 89 43 10 c7 02 00 00 00 00 51 9d <8b> 4e 24
>>0f
>> >>b7
>> >>51 04 0f b6 c2 c1 e0 08 c1 ea 08 09 d0 8d 68 f8
>> >>EIP: [<d0f666be>] rt_udp_recvmsg+0xd6/0x1b8 [rtipv4] SS:ESP
>>0068:ca401e84
>> >>LXRT releases PID 4313 (ID: udpsendReceive).
>> >>
>> >>_________________________________________________________________
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>> >>http://content.msn.co.in/Sports/Cricket/Default.aspx
>> >>
>> >>
>>
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