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DrunkenHero

DrunkenHero

| 09.11.2009 | 15:13 | 4 replies

Ident All + Given Buffer is too short

Hi,

I have a problem with the Ident All Packet.

APIOC_DCP_IDENT_ALL_REQ_T send_Identall;
			APIOC_DCP_IDENT_ENTRY_PCK_T receive_Identall={{0}};
			APIOC_DCP_IDENT_ENTRY_PCK_T reIdentEntry={0};



			send_Identall.tHead.ulDest=0x20;

			send_Identall.tHead.ulSrc=0;

			send_Identall.tHead.ulDestId=0;

			send_Identall.tHead.ulSrcId=0;

			send_Identall.tHead.ulLen=4;

			send_Identall.tHead.ulId=0;

			send_Identall.tHead.ulSta=0;

			send_Identall.tHead.ulCmd=0xc10;

			send_Identall.tHead.ulExt=0;

			send_Identall.tHead.ulRout=0;

			send_Identall.tData.ulTimeout=5;

		

			printf("Ident all I/O devices:\r\n");	

			if(CIFX_NO_ERROR == (lRet=xChannelPutPacket(hChannel,(CIFX_PACKET *)&send_Identall,PACKET_WAIT_TIMEOUT)))

				Sleep(3000);

			

			lRet=xChannelGetPacket(hChannel, sizeof(help), (CIFX_PACKET *)&help, PACKET_WAIT_TIMEOUT);                              //get Ident all conf paket

			lRet=xChannelGetPacket(hChannel,sizeof(receive_Identall), (CIFX_PACKET *)&receive_Identall, PACKET_WAIT_TIMEOUT);//get Ident Entry Indication paket

			

			if(CIFX_NO_ERROR==lRet)

				printf("packet command: %u",receive_Identall.tRsp.tHead.ulCmd);

			else

				showError(lRet);



			printf("Show ident all pakets?---(1)Yes / (0)No: ");

			scanf_s("%d",&a);

			if(a){

				printf("Send IdentAll Packet: \r\n");

				DumpPacket((CIFX_PACKET *)&send_Identall);

				printf("Received IdentAll Packet: \r\n");			

				DumpPacket((CIFX_PACKET *)&receive_Identall);

			}



			printf("IP Adresse:		 0x%08X \r\n",receive_Identall.tInd.tData.ulIp);

			printf("Netzmaske:		 0x%08X \r\n",receive_Identall.tInd.tData.ulNetMask);

			printf("Gateway:		 0x%08X \r\n",receive_Identall.tInd.tData.ulGateway);

			printf("Vendor ID:       %d \r\n",receive_Identall.tInd.tData.usVendorId);

			printf("ulCmd:			 0x%08X \r\n",receive_Identall.tInd.tHead.ulCmd);

			printf("ulState:		 0x%08X \r\n",receive_Identall.tInd.tHead.ulSta);

			printf("Namenslänge der Station:%d\r\n",receive_Identall.tInd.tData.usLenName);

			printf("Name der Station:%s\r\n",receive_Identall.tInd.tData.abNameOfStation);

My Problem is that I get the error message (Given buffer is too short)
The Output of my Programm is:
...
04 63 A8 C0 00 FF FF FF 04 63 A8 C0 0B 00 09 00
76 01 02 00 01 00 00 05 94 02 40 8A 68 CC CC CC
CC CC CC CC CC CC CC CC 20 00 00 00 00 00 00 00
IP Adresse: 0xC0A86304
Netzmaske: 0xFFFFFF00
Gateway: 0xC0A86304
Vendor ID: 374
ulCmd: 0x00000C24
ulState: 0x00000000
Namenslõnge der Station:11
Name der Station:h╠╠╠╠╠╠╠╠╠╠╠
...

the "Name der Station" should be hostapitest

Regards
C.Huiskens

Benjamin Meyer

Benjamin Meyer

Hilscher Gesellschaft fuer Systemautomation mbH

| 09.11.2009 | 15:27

This is strange.

which version of the IO-Controller firmware do you use?

is it possible for you to create a wireshark trace (.pcap) while performing the bus scan with IdentAll?

DrunkenHero

DrunkenHero

| 09.11.2009 | 16:03

Here is a wireshark trace:

No.     Time        Source                Destination           Protocol Info
      1 0.000000    Hilscher_20:ca:cf     PN-MC_00:00:00        PN-DCP   Ident Req, Xid:0xf0, All



Frame 1 (60 bytes on wire, 60 bytes captured)

    Arrival Time: Nov  9, 2009 15:50:54.353127000

    [Time delta from previous captured frame: 0.000000000 seconds]

    [Time delta from previous displayed frame: 0.000000000 seconds]

    [Time since reference or first frame: 0.000000000 seconds]

    Frame Number: 1

    Frame Length: 60 bytes

    Capture Length: 60 bytes

    [Frame is marked: False]

    [Protocols in frame: eth:pn_rt:pn_dcp]

    [Coloring Rule Name: Broadcast]

    [Coloring Rule String: eth[0] & 1]

Ethernet II, Src: Hilscher_20:ca:cf (00:02:a2:20:ca:cf), Dst: PN-MC_00:00:00 (01:0e:cf:00:00:00)

    Destination: PN-MC_00:00:00 (01:0e:cf:00:00:00)

        Address: PN-MC_00:00:00 (01:0e:cf:00:00:00)

        .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)

        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)

    Source: Hilscher_20:ca:cf (00:02:a2:20:ca:cf)

        Address: Hilscher_20:ca:cf (00:02:a2:20:ca:cf)

        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)

        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)

    Type: PROFINET (0x8892)

PROFINET acyclic Real-Time, ID:0xfefe, Len:  44

    FrameID: 0xfefe (Real-Time: DCP (Dynamic Configuration Protocol) identify multicast request)

PROFINET DCP, Ident Req, Xid:0xf0, All

    ServiceID: Identify (5)

    ServiceType: Request (0)

    Xid: 0x000000f0

    ResponseDelay: 255

    DCPDataLength: 4

    Block: All/All

        Option: All Selector (255)

        Suboption: ALL Selector (255)

        DCPBlockLength: 0



No.     Time        Source                Destination           Protocol Info

      2 2.013824    IxxatAut_02:40:8a     Hilscher_20:ca:cf     PN-DCP   Ident Ok , Xid:0xf0,Dev-Options(9), TypeOfStation, NameOfStation:"hostapitest", Dev-ID, Dev-Role, IP



Frame 2 (120 bytes on wire, 120 bytes captured)

    Arrival Time: Nov  9, 2009 15:50:56.366951000

    [Time delta from previous captured frame: 2.013824000 seconds]

    [Time delta from previous displayed frame: 2.013824000 seconds]

    [Time since reference or first frame: 2.013824000 seconds]

    Frame Number: 2

    Frame Length: 120 bytes

    Capture Length: 120 bytes

    [Frame is marked: False]

    [Protocols in frame: eth:pn_rt:pn_dcp]

Ethernet II, Src: IxxatAut_02:40:8a (00:05:94:02:40:8a), Dst: Hilscher_20:ca:cf (00:02:a2:20:ca:cf)

    Destination: Hilscher_20:ca:cf (00:02:a2:20:ca:cf)

        Address: Hilscher_20:ca:cf (00:02:a2:20:ca:cf)

        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)

        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)

    Source: IxxatAut_02:40:8a (00:05:94:02:40:8a)

        Address: IxxatAut_02:40:8a (00:05:94:02:40:8a)

        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)

        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)

    Type: PROFINET (0x8892)

PROFINET acyclic Real-Time, ID:0xfeff, Len: 104

    FrameID: 0xfeff (Real-Time: DCP (Dynamic Configuration Protocol) identify response)

PROFINET DCP, Ident Ok , Xid:0xf0, Dev-Options(9), TypeOfStation, NameOfStation:"hostapitest", Dev-ID, Dev-Role, IP

    ServiceID: Identify (5)

    ServiceType: Response Success (1)

    Xid: 0x000000f0

    Reserved: 0

    DCPDataLength: 94

    Block: Device/Device Options, BlockInfo: Reserved, 9 options

        Option: Device properties (2)

        Suboption: Device Options (5)

        DCPBlockLength: 20

        BlockInfo: Reserved (0)

        Option: Device properties (2)

        Suboption: Manufacturer specific (Type of Station) (1)

        Option: Device properties (2)

        Suboption: Name of Station (2)

        Option: Device properties (2)

        Suboption: Device ID (3)

        Option: Device properties (2)

        Suboption: Device Role (4)

        Option: Device properties (2)

        Suboption: Device Options (5)

        Option: Device properties (2)

        Suboption: Alias Name (6)

        Option: IP (1)

        Suboption: MAC address (1)

        Option: IP (1)

        Suboption: IP parameter (2)

        Option: DHCP (3)

        Suboption: DHCP client identifier (61)

    Block: Device/Manufacturer specific, BlockInfo: Reserved, TypeOfStation: "IE Module"

        Option: Device properties (2)

        Suboption: Manufacturer specific (Type of Station) (1)

        DCPBlockLength: 11

        BlockInfo: Reserved (0)

        TypeOfStation: IE Module

    Padding: 1 byte

    Block: Device/NameOfStation, BlockInfo: Reserved, "hostapitest"

        Option: Device properties (2)

        Suboption: Name of Station (2)

        DCPBlockLength: 13

        BlockInfo: Reserved (0)

        NameOfStation: hostapitest

    Padding: 1 byte

    Block: Device/Device ID, BlockInfo: Reserved, VendorID: 0x0176 / DeviceID: 0x0002

        Option: Device properties (2)

        Suboption: Device ID (3)

        DCPBlockLength: 6

        BlockInfo: Reserved (0)

        VendorID: 0x0176

        DeviceID: 0x0002

    Block: Device/Device Role, BlockInfo: Reserved, IO-Device

        Option: Device properties (2)

        Suboption: Device Role (4)

        DCPBlockLength: 4

        BlockInfo: Reserved (0)

        DeviceRoleDetails: 0x01

        Reserved: 0

    Block: IP/IP, BlockInfo: IP set, IP: 192.168.99.4, Subnet: 255.255.255.0, Gateway: 192.168.99.4

        Option: IP (1)

        Suboption: IP parameter (2)

        DCPBlockLength: 14

        BlockInfo: IP set (1)

        IPaddress: 192.168.99.4 (192.168.99.4)

        Subnetmask: 255.255.255.0 (255.255.255.0)

        StandardGateway: 192.168.99.4 (192.168.99.4)

DrunkenHero

DrunkenHero

| 11.11.2009 | 11:24

Hi ,

I found a way to fix that problem.
I changed the size of abNameOfStation[1](struct:APIOC_DCP_IDENT_ENTRY_PCK_T) into 100 (abNameOfStation[100]).

Question: Why is [1],the standard size of abNameOfSation (declared in PNM_PNIOAPCTL_Public.h)????

regards C.Huiskens

Benjamin Meyer

Benjamin Meyer

Hilscher Gesellschaft fuer Systemautomation mbH

| 12.11.2009 | 19:39

DrunkenHero wrote:
I found a way to fix that problem.
I changed the size of abNameOfStation[1](struct:APIOC_DCP_IDENT_ENTRY_PCK_T) into 100 (abNameOfStation[100]).

If that really helps solving your problem then the real problem is not the firmware. The firmware does not know anything about your change of a header-file.

I agree with you, the packet should have been defined with abNameofStation and abTypeOfStation as arrays with length 240 (max. possible value). i do not know why this is not the case. however such a change influences existing applications (API-change) and i am not sure if Hilscher will change its API.

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