AM2634: LWIP IGMP support

Hi,

I'm trying to test IGMP function in AM2634 EVM board base on the frertos lwip example(SDK v8.2).

The brief modification list below:

1. Make sure LWIP_IGMP is enable.

2. add NETIF_FLAG_IGMP to netif_default

3. Join multicast group with igmp_joingroup()

4. udp_new() -> udp_bind() -> udp_recv()

I can ping with host PC and receive unicast packet but I can't receive any multicast packet.

I'm not sure should I modify any configuration in enet driver.

Could you help to clarify what I'm missing? Or is there any example to send/receive IGMP with lwip in AM263x?

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

bool netInit(netPath_t *netPath, ptpClock_t *ptpClock)
{
    (void)(ptpClock); // UNUSED
    ip4_addr_t     as,as2;

    LOCK_TCPIP_CORE(); // System must support core locking!

    DBG("netInit\n");

    /* Join multicast group (for receiving) on specified interface */
    netPath->multicastAddr.addr = DEFAULT_PTP_DOMAIN_ADDRESS;
    IP4_ADDR(&as, 224, 0, 1, 129);
    uint8_t ret = (uint8_t)igmp_joingroup(IP_ADDR_ANY, &as);
    DBG("[Josh] igmp_joingroup return = 0x%X\n", ret);

    /* Join peer multicast group (for receiving) on specified interface */
    netPath->peerMulticastAddr.addr = PEER_PTP_DOMAIN_ADDRESS;
    IP4_ADDR(&as2, 224, 0, 0, 107);
    ret = igmp_joingroup(IP_ADDR_ANY, &as2);
    DBG("[Josh] igmp_joingroup return = 0x%X\n", ret);

    /* Initialize the buffer queues. */
    netHandlerInit(&netPath->eventHandler, &netPath->multicastAddr, PTP_EVENT_PORT);
    netHandlerInit(&netPath->generalHandler, &netPath->multicastAddr, PTP_GENERAL_PORT);

    /* Return a success code. */
    UNLOCK_TCPIP_CORE();
    return true;
}

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

static void netHandlerInit(packetHandler_t *handler, ip_addr_t *defaultAddr,
                                                                    u16_t port)
{
    err_t err;
    /* Initialise mailboxes */
    sys_mbox_new(&handler->inbox, PBUF_QUEUE_SIZE);
    sys_mbox_new(&handler->outbox, PBUF_QUEUE_SIZE);

    DBGV("netHandlerInit: handler - %lu\n", handler);

    /* Create UDP PCB */
    handler->pcb = udp_new();
    if (NULL == handler->pcb) {
        ERROR("netInit: Failed to open UDP PCB\n");
        return;
    }

    /* Multicast send only on specified interface. */
    handler->pcb->mcast_ip4.addr = defaultAddr->addr;

    /* Establish the appropriate UDP bindings/connections for events. */
    err = udp_bind(handler->pcb, IP_ADDR_ANY, port);
    if (err == ERR_OK) {
        udp_recv(handler->pcb, netRecvCallback, handler);
    } else {
        udp_remove(handler->pcb);
        ERROR("Can't bind pcb\n");
    }
}

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

[Log]

==========================
      ENET LWIP App       
==========================
igmp_start: starting IGMP processing on if 70165188
igmp_lookup_group: allocated a new group with address 0.0.0.0 on if 70165188
igmp_report_groups: sending IGMP reports on if 70165188
igmp_init: initializing
Starting lwIP, local interface IP is 192.168.31.246
[Josh] init_default_netif() netif.flags = 0x0
CPSW_3G Test on MAIN NAVSS
EnetPhy_bindDriver: PHY 0: OUI:080028 Model:0f Ver:01 <-> 'dp83869' : OK
PHY 0 is alive
Host MAC address: 70:ff:76:1d:ec:f2
[LWIPIF_LWIP] Enet has been started successfully
[LWIPIF_LWIP] NETIF INIT SUCCESS
igmp_start: starting IGMP processing on if 70165218
igmp_lookup_group: allocated a new group with address 224.0.0.1 on if 70165218
status_callback==UP, local interface IP is 192.168.31.246
[Josh]: netif_default->flags = 0x29
PTPd initialising...
leaving state PTP_INITIALIZING
entering state PTP_INITIALIZING
manufacturerIdentity: PTPd;2.0.1
netShutdown
netInit
igmp_lookup_group: allocated a new group with address 224.0.1.129 on if 70165218
igmp_joingroup_netif: join to new group: 224.0.1.129
igmp_lookup_group: allocated a new group with address 224.0.1.129 on if 70165188
igmp_joingroup_netif: join to new group: 224.0.1.129
[Josh] igmp_joingroup return = 0x0
igmp_lookup_group: allocated a new group with address 224.0.0.107 on if 70165218
igmp_joingroup_netif: join to new group: 224.0.0.107
igmp_lookup_group: allocated a new group with address 224.0.0.107 on if 70165188
igmp_joingroup_netif: join to new group: 224.0.0.107
[Josh] igmp_joingroup return = 0x0
netHandlerInit: handler - 1880496616
netHandlerInit: handler - 1880496764
igmp_input: message from 127.0.0.1 to address 224.0.1.129 on if 70165188
igmp_input: IGMP_V2_MEMB_REPORT
igmp_input: message from 127.0.0.1 to address 224.0.0.107 on if 70165188
igmp_input: IGMP_V2_MEMB_REPORT
igmp_timeout: report membership for group with address 224.0.1.129 on if 70165218
initData
initData: EUI48toEUI64
initClock
adjFreq 0
bmc: m1
leaving state PTP_INITIALIZING
entering state PTP_LISTENING
------------------------------------
igmp_timeout: report membership for group with address 224.0.0.107 on if 70165218
Cpsw_handleLinkUp: Port 1: Link up: 1-Gbps Full-Duplex
MAC Port 1: link up
igmp_report_groups: sending IGMP reports on if 70165218
link_callback==UP
igmp_timeout: report membership for group with address 224.0.1.129 on if 70165218
igmp_timeout: report membership for group with address 224.0.0.107 on if 70165218

Regards,

Josh