ColdFire/68K Microcontrollers and ProcessorsのトピックEthernet sending data

Ethernet sending data

UDP — Thu, 24 Aug 2006 14:57:35 GMT

Hello

I am using the ethernet.

I am using the "fec_send" function that in the "fec.c" file.

When i called to this function it send the data twice . why is that?

The function:

static int fec_send (NIF *nif, NBUF *pNbuf)
{
/* If data length of the frame is too long or short, reject */
if ((pNbuf->length > nif->mtu) || (pNbuf->length <= 0))
return FALSE;

/* Adjust the length by the ethernet header size */
//pNbuf->length += ETH_HDR_SIZE;

/* Set Frame ready for transmit */
pNbuf->status |= TX_BD_R;

/* Mark the buffer as not in use */
nif->tx_free(pNbuf);

/* Indicate that there has been a transmit buffer produced */
MCF_FEC_TDAR = 1;

/* The hardware will mark the buffer as empty once it's transmitted */

nif->f_tx++;
return TRUE;
}

Thanks

Re: Ethernet sending data

DrSeuss — Sat, 02 Sep 2006 04:17:20 GMT

I have noticed in the past that with wireless network routers that this happens.

Same hardware / software on a different (non-wireless) router and this does not happen.

I have seen this on both the 52235 and the NE64.

No one (stack vendors) have ever been able to explain why this happens. I think it to be router related.

Re: Ethernet sending data

MattS — Wed, 06 Sep 2006 10:31:35 GMT

I have found the same problem. Have you found a solution?

Matt

Re: Ethernet sending data

J_karlsson — Thu, 12 Oct 2006 21:11:39 GMT

Hi, I'm also experiencing this problem, has anyone a solution to this problem?