• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 101 subscribers
  • Views 727 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Question about multicast on C6678

Yan Du
Prodigy 30 points
Other Parts Discussed in Thread: SYSBIOS

Hi,

I am developing an Ethernet project based on the client example in MCSDK.

The project works fine on unicast and broadcast recv and send. However, when i try to use multicast, it does not recv or send multicast packets.

I called setsockopt(netPath->eventSock, IPPROTO_IP, IP_ADD_MEMBERSHIP, &imr, sizeof(struct ip_mreq) to enable multicast on NDK level.

Based on this post http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/t/376796.aspx

I modified the nimu driver in NDK and tell PA not to filter out multicast packets by calling Pa_configExceptionRoute and pushing the generated cmd to PA. But still i could not see multicast coming into NDK level.

Also, I am testing the project with the simulator. Could it be the simulator not supporting multicast?

I see there are couple posts related to the multicast problem, but none of them has a real answer.

i am using:

MCSDK 2.01.02.06

NDK 2.24.0.11

PDK C6678 1.1.2.6

SYSBIOS 6.35.04.50

CCS v5


Any help would be greatly appreciated.

  • 0
    TI__Mastermind 20790 points

    Yan,

    The NIMU shouldn’t be supporting multicast packets, since PA rules filters out packets without the EVM’s mac address.

    You have referred this E2E post  already , this is the latest update.

    http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/376796/1327699.aspx#1327699

    If you are using C6657, it have EMAC. If you are using C6678, its using multicore navigator and PA module.

    http://processors.wiki.ti.com/index.php/BIOS_MCSDK_2.0_User_Guide#Network_Interface_Management_Unit_.28NIMU.29_Driver

  • 0 in reply to Pubesh
    TI__Mastermind 20790 points

    Yan,

    However this discussion of thread can helpful for future readers, If you verified this thread.