static void locomx_rx(struct z8530_channel *c, struct sk_buff *skb)
{
struct net_device *dev = c->netdevice;
struct comx_channel *ch = netdev_priv(dev);
if (ch->debug_flags & DEBUG_HW_RX) {
comx_debug_skb(dev, skb, "locomx_rx receiving");
}
ch->LINE_rx(dev,skb);
}
int comx_rx(struct net_device *dev, struct sk_buff *skb)
{
struct comx_channel *ch = dev->priv;
if (ch->debug_flags & DEBUG_COMX_RX) {
comx_debug_skb(dev, skb, "comx_rx skb");
}
if (skb) {
netif_rx(skb);
dev->last_rx = jiffies;
}
return 0;
}
static inline void mixcom_receive_frame(struct net_device *dev)
{
struct comx_channel *ch=dev->priv;
struct mixcom_privdata *hw=ch->HW_privdata;
register byte rsta;
register word length;
rsta = rd_hscx(dev, HSCX_RSTA) & (HSCX_VFR | HSCX_RDO |
HSCX_CRC | HSCX_RAB);
length = ((rd_hscx(dev, HSCX_RBCH) & 0x0f) << 8) |
rd_hscx(dev, HSCX_RBCL);
if ( length > hw->rx_ptr ) {
hscx_empty_fifo(dev, length - hw->rx_ptr);
}
if (!(rsta & HSCX_VFR)) {
ch->stats.rx_length_errors++;
}
if (rsta & HSCX_RDO) {
ch->stats.rx_over_errors++;
}
if (!(rsta & HSCX_CRC)) {
ch->stats.rx_crc_errors++;
}
if (rsta & HSCX_RAB) {
ch->stats.rx_frame_errors++;
}
ch->stats.rx_packets++;
ch->stats.rx_bytes += length;
if (rsta == (HSCX_VFR | HSCX_CRC) && hw->recving) {
skb_trim(hw->recving, hw->rx_ptr - 1);
if (ch->debug_flags & DEBUG_HW_RX) {
comx_debug_skb(dev, hw->recving,
"MIXCOM_interrupt receiving");
}
hw->recving->dev = dev;
if (ch->LINE_rx) {
ch->LINE_rx(dev, hw->recving);
}
}
else if(hw->recving) {
kfree_skb(hw->recving);
}
hw->recving = NULL;
hw->rx_ptr = 0;
}
static int comx_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct comx_channel *ch = dev->priv;
int rc;
if (skb->len > dev->mtu + dev->hard_header_len) {
printk(KERN_ERR "comx_xmit: %s: skb->len %d > dev->mtu %d\n", dev->name,
(int)skb->len, dev->mtu);
}
if (ch->debug_flags & DEBUG_COMX_TX) {
comx_debug_skb(dev, skb, "comx_xmit skb");
}
rc=ch->LINE_xmit(skb, dev);
// if (!rc) dev_kfree_skb(skb);
return rc;
}
