Hi,
I'm having some problems in developing the receiving part of a ethernet
driver. That's my first experience on a eth driver, so it could be a really
dumb thing.
My interrupt handler does exactly as said by 'LinuxNetworkInternals' and is
similar to the dm9000 driver.
I'm testing all that stuff with ping and arp requests (and watching with
wireshark what pass on the other side of the cable ;P )
I see that netif_rx() went called, and that the pointer to the packet
contains the right values (ie: the dump of the memory coincides with the
dump of the packet sent by another pc)
I see moreover that net_rx_action went called, so it seems everything's
fine... but... i don't see any calls to my trasmittion function...
I already make the start_xsmit() work, so it's not (or it seems to) this
the cause.
The code that receive does something like that (cleaned out most of device
dependent code):
/* Get length if the packet... */
rxlen = readw(db->rxbuf);
reads = function(rxlen);
if ((skb = dev_alloc_skb(rxlen)) != NULL) {
skb->dev = dev;
skb_reserve(skb, 2);
rdptr = (u8 *) skb_put(skb, rxlen );
for( count = 0 ; count < reads ; count ++ ){
u16 tmpbyte = readw( (void* __iomem)db->rxbuf );
rdptr[count] = tmpbyte & 0x00FF;
rdptr[count+1] = tmpbyte >> 8;
}
}
/* Pass to upper layer */
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb);
// ... updating stats structs...
Has someone any suggestion for me?
Thanks in advance.
--
-gaspa-
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