Juergen Pfeiffer schrieb: 
Hi

I didn't get bridgeing to work with Linux kernel 2.6.10 (coldfire 5485) 
yet. When i try to configure bridgeing
with "brctl", everything seems to be ok, but i if i try to ping through 
my bridge, i see ARP-Request arriving on the other side, but the
ARP-Responses do not go back through the bridge.

Now i found the error in the coldfire specific ethernet driver: "drivers/net/fec/fec.c"
The driver did not set Promiscuouse Mode correct in Hardware Registers:

function fec_set_multicast_list() with error:
void fec_set_multicast_list(struct net_device *dev)
{
    // Pointer to the address list
    struct dev_mc_list *dmi;

    unsigned int crc, data;
    int i, j, k;

    // Receive the base address
    unsigned long base_addr = (unsigned long) dev->base_addr;

    if (dev->flags & IFF_PROMISC || dev->flags & IFF_ALLMULTI)
    {
        // Allow all incoming frames
        FEC_GALR(base_addr) = 0xFFFFFFFF;
        FEC_GAUR(base_addr) = 0xFFFFFFFF;
        return;
    }
...



function fec_set_multicast_list() correct:
void fec_set_multicast_list(struct net_device *dev)
{
    // Pointer to the address list
    struct dev_mc_list *dmi;

    unsigned int crc, data;
    int i, j, k;

    // Receive the base address
    unsigned long base_addr = (unsigned long) dev->base_addr;

    if (dev->flags & IFF_PROMISC)
    {
        // Allow all incoming frames
        if ((FEC_RCR(base_addr) & FEC_RCR_PROM)==0) {
            FEC_ECR(base_addr) &= ~FEC_ECR_ETHEREN;
            FEC_RCR(base_addr) |= FEC_RCR_PROM;
            FEC_ECR(base_addr) |= FEC_ECR_ETHEREN;
        }
        return;
    }
    if ((FEC_RCR(base_addr) & FEC_RCR_PROM)!=0) {
        FEC_ECR(base_addr) &= ~FEC_ECR_ETHEREN;
        FEC_RCR(base_addr) &= ~FEC_RCR_PROM;
        FEC_ECR(base_addr) |= FEC_ECR_ETHEREN;
    }
    if (dev->flags & IFF_ALLMULTI)
    {
        // Allow all incoming frames
        FEC_GALR(base_addr) = 0xFFFFFFFF;
        FEC_GAUR(base_addr) = 0xFFFFFFFF;
        return;
    }
...


after this the bridge worked fine!


--
Jürgen Pfeiffer

* mailto:j.pfeiffer@seskion.de
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