AcoSail/kernel_optimize_test
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hysdn: convert to net_device_ops and other updates

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Several API problems fixed:
  * use proper allocation
  * handle renames
  * convert to net_device_ops
  * use internal net_device_stats

This driver is putrid (as in old and rotten), so I doubt any one uses it.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2009-01-07 18:03:43 -08:00 committed by David S. Miller
parent fb875333c8
commit 0e2445fbdd
1 changed files with 31 additions and 46 deletions
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77
drivers/isdn/hysdn/hysdn_net.c
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@ -38,16 +38,12 @@ char *hysdn_net_revision = "$Revision: 1.8.6.4 $";
/* inside the definition. */
/****************************************************************************/
struct net_local {
struct net_device netdev; /* the network device */
struct net_device_stats stats;
/* additional vars may be added here */
char dev_name[9]; /* our own device name */
/* Tx control lock. This protects the transmit buffer ring
* state along with the "tx full" state of the driver. This
* means all netif_queue flow control actions are protected
* by this lock as well.
*/
struct net_device *dev;
spinlock_t lock;
struct sk_buff *skbs[MAX_SKB_BUFFERS]; /* pointers to tx-skbs */
int in_idx, out_idx; /* indexes to buffer ring */
@ -55,15 +51,6 @@ struct net_local {
}; /* net_local */
/*****************************************************/
/* Get the current statistics for this card. */
/* This may be called with the card open or closed ! */
/*****************************************************/
static struct net_device_stats *
net_get_stats(struct net_device *dev)
{
return (&((struct net_local *) dev)->stats);
} /* net_device_stats */
/*********************************************************************/
/* Open/initialize the board. This is called (in the current kernel) */
@ -182,8 +169,8 @@ hysdn_tx_netack(hysdn_card * card)
if (!lp->sk_count)
return; /* error condition */
lp->stats.tx_packets++;
lp->stats.tx_bytes += lp->skbs[lp->out_idx]->len;
lp->dev->stats.tx_packets++;
lp->dev->stats.tx_bytes += lp->skbs[lp->out_idx]->len;
dev_kfree_skb(lp->skbs[lp->out_idx++]); /* free skb */
if (lp->out_idx >= MAX_SKB_BUFFERS)
@ -200,29 +187,30 @@ void
hysdn_rx_netpkt(hysdn_card * card, unsigned char *buf, unsigned short len)
{
struct net_local *lp = card->netif;
struct net_device *dev = lp->dev;
struct sk_buff *skb;
if (!lp)
return; /* non existing device */
lp->stats.rx_bytes += len;
dev->stats.rx_bytes += len;
skb = dev_alloc_skb(len);
if (skb == NULL) {
printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n",
lp->netdev.name);
lp->stats.rx_dropped++;
dev->name);
dev->stats.rx_dropped++;
return;
}
/* copy the data */
memcpy(skb_put(skb, len), buf, len);
/* determine the used protocol */
skb->protocol = eth_type_trans(skb, &lp->netdev);
skb->protocol = eth_type_trans(skb, dev);
dev->stats.rx_packets++; /* adjust packet count */
netif_rx(skb);
lp->stats.rx_packets++; /* adjust packet count */
} /* hysdn_rx_netpkt */
/*****************************************************/
@ -242,24 +230,15 @@ hysdn_tx_netget(hysdn_card * card)
return (lp->skbs[lp->out_idx]); /* next packet to send */
} /* hysdn_tx_netget */
static const struct net_device_ops hysdn_netdev_ops = {
.ndo_open = net_open,
.ndo_stop = net_close,
.ndo_start_xmit = net_send_packet,
.ndo_change_mtu = eth_change_mtu,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
/*******************************************/
/* init function called by register device */
/*******************************************/
static int
net_init(struct net_device *dev)
{
/* setup the function table */
dev->open = net_open;
dev->stop = net_close;
dev->hard_start_xmit = net_send_packet;
dev->get_stats = net_get_stats;
/* Fill in the fields of the device structure with ethernet values. */
ether_setup(dev);
return (0); /* success */
} /* net_init */
/*****************************************************************************/
/* hysdn_net_create creates a new net device for the given card. If a device */
@ -271,28 +250,34 @@ hysdn_net_create(hysdn_card * card)
{
struct net_device *dev;
int i;
struct net_local *lp;
if(!card) {
printk(KERN_WARNING "No card-pt in hysdn_net_create!\n");
return (-ENOMEM);
}
hysdn_net_release(card); /* release an existing net device */
if ((dev = kzalloc(sizeof(struct net_local), GFP_KERNEL)) == NULL) {
dev = alloc_etherdev(sizeof(struct net_local));
if (!dev) {
printk(KERN_WARNING "HYSDN: unable to allocate mem\n");
return (-ENOMEM);
}
lp = netdev_priv(dev);
lp->dev = dev;
dev->netdev_ops = &hysdn_netdev_ops;
spin_lock_init(&((struct net_local *) dev)->lock);
/* initialise necessary or informing fields */
dev->base_addr = card->iobase; /* IO address */
dev->irq = card->irq; /* irq */
dev->init = net_init; /* the init function of the device */
if(dev->name) {
strcpy(dev->name, ((struct net_local *) dev)->dev_name);
}
dev->netdev_ops = &hysdn_netdev_ops;
if ((i = register_netdev(dev))) {
printk(KERN_WARNING "HYSDN: unable to create network device\n");
kfree(dev);
free_netdev(dev);
return (i);
}
dev->ml_priv = card; /* remember pointer to own data structure */
@ -316,7 +301,7 @@ hysdn_net_release(hysdn_card * card)
return (0); /* non existing */
card->netif = NULL; /* clear out pointer */
dev->stop(dev); /* close the device */
net_close(dev);
flush_tx_buffers((struct net_local *) dev); /* empty buffers */