PA_SimpleExample (c6670) questions,

Hi, RC:

Let's discuss what you want to do at first. I believe that you want to modify the PA_SimpleExample project to recerive some packets generated and sent by PC, right?
- Have you configured PASS to receive such packet?
- Have you configured the CPSW ALE table to receive such packet?
- Can you show me the packet taht you intend to send and receive?
- You can dump the CPSW statistics at address 0x2090b00 and 0x2090c00.

Best regards,

Eric

Hi Eric,

             Many a Thanks for quick reply. Yes, my aim is to receive the udp packets generated by the pc.

1. PASS configuration yes though setupPa().

2. CPSW ALE Table. here my understanding is nill, i assume Init_Cpsw() will do the stuff.

3. 

10 11 12 13 14 15 00 0e a6 66 57 04 08 00 45 00
00 6c 00 00 00 00 05 11 a5 97 9e da 6d 0a 01 02
03 04 12 34 00 00 00 58 e1 98 32 33 34 35 36 37
38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47
48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57
58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67
68 69 6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77
78 79 7a 7b 7c 7d 7e 7f 80 81

4. I will get you the dump in immediate next post [little time from now].

Thanks

RC Reddy

Hi, Reddy:

I am not sure which version of PDK that you are using. We do not program ALE table unless cpswSimTest is set at tle latest version of PDK.
Besides, please provide dump before and after you send packets from PC. I will recommend you to confim that you are able to receive packet from EVM at first. Then you can write a PC program to swap the MAC address of the received packet and send it back to EVM.

Best regards,

Eric

Hi Eric,

         PDK version : -  pdk_C6670_1_0_0_21

         NDK version : - ndk_2_21_00_32

         CCSV5 : - .69 [Version: 5.2.0.00069]

         MCSDK : - .21 [mcsdk_2_00_09_21]

I will be sending the dump now itself [few mintues from now].

Thanks

RC Reddy

Hi Eric,

             I see the values from 0x2090b00 to 0x2090c00 [in memory brower] being zeros. I see the wireshark capture shows the packets being sent out [i mean atleast they are leaving the ethernet port of laptop/pc].

1. In the example project, the destination ip is being set to 1.2.3.4 and i am setting my laptop ip to 1.2.3.3 [255.255.255.0]. let me know if i am incorrect here ?

2. I am running this example on core0 [c6670] only.

Thanks

RC Reddy

Hi Eric,

            the other observation is,

even in the normal mode [i mean in the example, with purely no changes], i see ZERO values in taht range of address 0x2090b00 to 0x2090c00 .

1. i am looking at the values after putting breakpoint at 

  System_printf ("Test Completed successfully\n");

let me know, there is any other appropriate places for the breakpoint.

Thanks

RC Reddy

Hi, Reddy:

The simpleExample use internal PASS loopback by deafult. In other words, it does not send the packet out. You should run the same test by using emacExample.

Best regards,

Eric

Hi Eric,

           Please confirm the following in simple words

1. The PA_simpleExample CANT do any ethernet packet communication with external world [laptop/pc].

2. "In other words, it does not send the packet out" ==> W.R.T to what you told, probably i am not clear in explaining myself. I WANT PC/Laptop to send UDP packet to EVM board.

PC[rj 45 connector]  ==udp sendpacket==> c6670 evm [rj45 connector]

do you mean that the PA config does not allow you to send packet inside. can you please reason out why?

Thanks

RC Reddy

Hi, RC:

1. The PA_simpleExample CANT do any ethernet packet communication with external world [laptop/pc].
[Eric] The PA_simpleEXample does not send packet to the ethernet port (CPSW) by default. 
           Int cpswLpbkMode = CPSW_LOOPBACK_PA;

  /* Send the packet out the mac. It will loop back to PA if the mac/switch have been
   * configured properly */ 
  if(cpswLpbkMode == CPSW_LOOPBACK_PA)
    Qmss_queuePush (gvTxQ[0], hd, len4, CONFIG_SIZE_DESC, Qmss_Location_TAIL);
  else
    Qmss_queuePush (gvTxQ[8], hd, len4, CONFIG_SIZE_DESC, Qmss_Location_TAIL);

You need to change the cpswLpbk_mode to other values.

/* Define LoopBack modes */ 
#define CPSW_LOOPBACK_NONE           0
#define CPSW_LOOPBACK_INTERNAL       1
#define CPSW_LOOPBACK_EXTERNAL       2
#define CPSW_LOOPBACK_PA             3

Which mode do you use to send and receive packet? Can you do the same CPSW dump before and after you run the test successfully?

Best regards,

Eric

Hi Eric,

          If you happen to read my first post [in this same thread], i have already mentioned the info

3. Following are my settings 

Int cpswLpbkMode = CPSW_LOOPBACK_NONE; //CPSW_LOOPBACK_PA;
Int cpswSimTest = 0;

i have put diagram and statement also to explain what i am trying to achieve. I assume this diagram itself tells i DONT want any loop back

PC based udp packet generator   <====Ethernet connection====> [c6670 EVM running PA_SimpleExample project].

My aim/objective is to generate a single UDP packet [which is same in contents as the packet in the PA_Simpleexample project] and to make the EVM running the project receive the packet.

with above statements, i MEAN I DONT WANT ANY LOOPBACK, i WANT ONLY PC to EVM connection though ethernet cable.

As i reiterate again, the CPSW dump before and after is all zeros 

If you read my above two posts again, i did following experiments

1. I did run the ccs project [here project means PA_SimpleExample project] on evm board c6670 as is [as is means i didnt modify anything in the code] and when i see dump at the address [you mentioned],its all zeros.

2. I asked you in my earlier post, which is the appropriate place to view the dump and i told at what point i am viewing the dump.

[i am looking at the values after putting breakpoint at 

  System_printf ("Test Completed successfully\n");] ]

3. finally, whether i run the PA_Simpleexample in evm board c6670,i am not seeing any values in the address range you mentioned, kindly let me know is there any structure [structure means data structure] which i can view in the expressions windows for the cpsw  stats.

4. Also let me reiterate again and again, i am running the project on c6670 evm board.

Hi Eric,

            My kind request is to please go through my previous posts [in THIS same thread/chain] and please see if i am missing anything. 

Thanks

RC Reddy

HI Eric,

          after much debugging and going through all possible documents, i found that i am doing a simple silly mistake [too bad on my part, i accept it] and the mistake was i was using simulator based .ccxml [Though i was running on the c6670 board]. sorry for earlier incorrect cpsw stats, here are the new stats

but my project is still not coming to successfull completion.

Thanks

RC Reddy

Hi, RC:

We are geting there. Can you show me the rx and tx statistics of CPPI port (0x2090b00)? Please dump the following memory location in 32-bit format:
         0x2000000-0x200005f (24 32-bit words) after you forward the packet.

Is it possible to use a private (controlled) network, so that we know what and how many packets are delivered to the EVM board.

Best regards,

Eric

Hi Eric,

            Thanks for your reply.

       w.r.t to you question [Is it possible to use a private (controlled) network, so that we know what and how many packets are delivered to the EVM board.]

Yes, my network is private controlled, i mean i have pc/laptop connected to EVM [c6670] board through a straight cable [its a point to point connection].

from udp packet generator, i sent 2 packets and here i am attaching the captures 

=============output logs===============

[C66xx_0] function findPacket: Timeout waiting for data packet
[C66xx_0] --- PA STATS ---
C1 number of packets: 6
C1 number IPv4 packets: 0
C1 number IPv6 packets: 0
C1 number custom packets: 0
C1 number SRIO packets: 0
C1 number llc/snap fail: 0
C1 number table matched: 0
[C66xx_0] C1 number failed table matched: 3
C1 number Ingress IP frags: 0
C1 number IP depth overflow: 0
C1 number vlan depth overflow: 0
C1 number gre depth overflow: 0
C1 number mpls packets: 0
C1 number of parse fail: 0
C1 number invalid [C66xx_0] IPv6 opts: 0
C1 number of Egress IP frags: 0
C1 number of silent discard: 3
C1 number of invalid control: 0
C1 number of invalid states: 0
C1 number of system fails: 0

[C66xx_0] C2 number of packets: 5
C2 number of UDP packets: 0
C2 number of TCP packets: 0
C2 number of custom packets: 0
C2 number of silent discard: 0
C2 number of invalid control: 0

[C66xx_0] Modify number of command file: 0

[C66xx_0] Function findPacket failed

=============================udp tool packet vals =====

10 11 12 13 14 15 00 0e a6 66 57 04 08 00 45 00
00 6c 00 00 01 00 05 11 a5 97 9e da 6d 0a 01 02
03 04 12 34 00 00 00 58 e1 98 32 33 34 35 36 37
38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47
48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57
58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67
68 69 6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77
78 79 7a 7b 7c 7d 7e 7f 80 81

=================================================

i have a doubt, the address 0x2090b00 belongs to [EMAC port 0 = SGMII_0 = switch port 1 = AMC backplane lines]

i have a doubt, the address 0x2090c00 belongs to [EMAC port 1 = SGMII_1 = switch port 2 = RJ45 connector] ? please confirm/correct my understanding.

Thanks

RC Reddy

Also Eric,

               one more information i wanted to provide. I have added udp port based classification custom rules [but if i understand, that are at Level 4, here what i see is Level 2 MAC itself is failing].

The other part is udp port classification [256 ports per queue] works in loopback and it classifies 

Port Range start          Port Range End          QueueNumber

   0x0000                         0x00FF                        904

   0x0100                         0x01FF                        905

   0x0200                         0x02FF                        906

   0x0300                         0x03FF                        907

so the example works in loopback mode, so i assume the code which i added [w.r.t to ports based classification is not coming in the PC<=>EVM board connection based testing]. please let me know if i am doing anything incorrect.

Thanks

RC Reddy

Hi Eric,

           based on your suggestion, i made the changes as below

//if(cpswLpbkMode != CPSW_LOOPBACK_NONE)
CSL_CPSW_3GF_enableAleBypass();

Now with above changes, i pumped in 10 packets [in which only 5 packets are correct and remaining 5 packets are incorrect, this is due to bug in packet generator tool :-( ], so based on that 5 packets will be custom packets which will reach the Rxqueue [host queue]  after all classification checks.

==============outputs=============

[C66xx_0] function findPacket: Timeout waiting for data packet
[C66xx_0] --- PA STATS ---
C1 number of packets: 23
C1 number IPv4 packets: 10
C1 number IPv6 packets: 0
C1 number custom packets: 0
C1 number SRIO packets: 0
C1 number llc/snap fail: 0
C1 number table matched: [C66xx_0] 20
C1 number failed table matched: 0
C1 number Ingress IP frags: 5
C1 number IP depth overflow: 0
C1 number vlan depth overflow: 0
C1 number gre depth overflow: 0
C1 number mpls packets: 0
C1 number of parse fail: 0
C1 number inval[C66xx_0] id IPv6 opts: 0
C1 number of Egress IP frags: 0
C1 number of silent discard: 5
C1 number of invalid control: 0
C1 number of invalid states: 0
C1 number of system fails: 0

[C66xx_0] C2 number of packets: 10
C2 number of UDP packets: 0
C2 number of TCP packets: 0
C2 number of custom packets: 5
C2 number of silent discard: 0
C2 number of invalid control: 0

[C66xx_0] Modify number of command file: 0

[C66xx_0] Function findPacket failed

with the code changes above, the example works for 5 packets [which is inline with my expectations]. Thanks Eric and now i have to investigate why and how this ALEBypass condition affected my project.

Thanks

RC Reddy