#define CYCLOMX_X25_DEBUG 1
+#include <linux/ctype.h> /* isdigit() */
#include <linux/errno.h> /* return codes */
#include <linux/if_arp.h> /* ARPHRD_HWX25 */
#include <linux/kernel.h> /* printk(), and other useful stuff */
#include <linux/module.h>
#include <linux/string.h> /* inline memset(), etc. */
+#include <linux/sched.h>
#include <linux/slab.h> /* kmalloc(), kfree() */
#include <linux/stddef.h> /* offsetof(), etc. */
#include <linux/wanrouter.h> /* WAN router definitions */
cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev);
/* Network device interface */
-static int cycx_netdevice_init(struct net_device *dev),
- cycx_netdevice_open(struct net_device *dev),
- cycx_netdevice_stop(struct net_device *dev),
- cycx_netdevice_hard_header(struct sk_buff *skb,
- struct net_device *dev, u16 type,
- void *daddr, void *saddr, unsigned len),
- cycx_netdevice_rebuild_header(struct sk_buff *skb),
- cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
- struct net_device *dev);
+static int cycx_netdevice_init(struct net_device *dev);
+static int cycx_netdevice_open(struct net_device *dev);
+static int cycx_netdevice_stop(struct net_device *dev);
+static int cycx_netdevice_hard_header(struct sk_buff *skb,
+ struct net_device *dev, u16 type,
+ const void *daddr, const void *saddr,
+ unsigned len);
+static int cycx_netdevice_rebuild_header(struct sk_buff *skb);
+static netdev_tx_t cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
+ struct net_device *dev);
static struct net_device_stats *
cycx_netdevice_get_stats(struct net_device *dev);
static struct net_device *
cycx_x25_get_dev_by_dte_addr(struct wan_device *wandev, char *dte);
+static void cycx_x25_chan_setup(struct net_device *dev);
+
#ifdef CYCLOMX_X25_DEBUG
static void hex_dump(char *msg, unsigned char *p, int len);
static void cycx_x25_dump_config(struct cycx_x25_config *conf);
return -EINVAL;
}
- /* allocate and initialize private data */
- chan = kmalloc(sizeof(struct cycx_x25_channel), GFP_KERNEL);
- if (!chan)
+ dev = alloc_netdev(sizeof(struct cycx_x25_channel), conf->name,
+ cycx_x25_chan_setup);
+ if (!dev)
return -ENOMEM;
- memset(chan, 0, sizeof(*chan));
+ chan = netdev_priv(dev);
strcpy(chan->name, conf->name);
chan->card = card;
chan->link = conf->port;
if (len > WAN_ADDRESS_SZ) {
printk(KERN_ERR "%s: %s local addr too long!\n",
wandev->name, chan->name);
- kfree(chan);
- return -EINVAL;
+ err = -EINVAL;
+ goto error;
} else {
chan->local_addr = kmalloc(len + 1, GFP_KERNEL);
if (!chan->local_addr) {
- kfree(chan);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto error;
}
}
/* Set channel timeouts (default if not specified) */
chan->idle_tmout = conf->idle_timeout ? conf->idle_timeout : 90;
- } else if (is_digit(conf->addr[0])) { /* PVC */
+ } else if (isdigit(conf->addr[0])) { /* PVC */
s16 lcn = dec_to_uint(conf->addr, 0);
if (lcn >= card->u.x.lo_pvc && lcn <= card->u.x.hi_pvc)
"%s: PVC %u is out of range on interface %s!\n",
wandev->name, lcn, chan->name);
err = -EINVAL;
+ goto error;
}
} else {
printk(KERN_ERR "%s: invalid media address on interface %s!\n",
wandev->name, chan->name);
err = -EINVAL;
+ goto error;
}
- if (err) {
- if (chan->local_addr)
- kfree(chan->local_addr);
-
- kfree(chan);
- return err;
- }
-
- /* prepare network device data space for registration */
- strcpy(dev->name, chan->name);
- dev->init = cycx_netdevice_init;
- dev->priv = chan;
-
return 0;
+
+error:
+ free_netdev(dev);
+ return err;
}
/* Delete logical channel. */
static int cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev)
{
- if (dev->priv) {
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
- if (chan->svc) {
- if (chan->local_addr)
- kfree(chan->local_addr);
-
- if (chan->state == WAN_CONNECTED)
- del_timer(&chan->timer);
- }
-
- kfree(chan);
- dev->priv = NULL;
+ if (chan->svc) {
+ kfree(chan->local_addr);
+ if (chan->state == WAN_CONNECTED)
+ del_timer(&chan->timer);
}
return 0;
}
+
/* Network Device Interface */
+
+static const struct header_ops cycx_header_ops = {
+ .create = cycx_netdevice_hard_header,
+ .rebuild = cycx_netdevice_rebuild_header,
+};
+
+static const struct net_device_ops cycx_netdev_ops = {
+ .ndo_init = cycx_netdevice_init,
+ .ndo_open = cycx_netdevice_open,
+ .ndo_stop = cycx_netdevice_stop,
+ .ndo_start_xmit = cycx_netdevice_hard_start_xmit,
+ .ndo_get_stats = cycx_netdevice_get_stats,
+};
+
+static void cycx_x25_chan_setup(struct net_device *dev)
+{
+ /* Initialize device driver entry points */
+ dev->netdev_ops = &cycx_netdev_ops;
+ dev->header_ops = &cycx_header_ops;
+
+ /* Initialize media-specific parameters */
+ dev->mtu = CYCX_X25_CHAN_MTU;
+ dev->type = ARPHRD_HWX25; /* ARP h/w type */
+ dev->hard_header_len = 0; /* media header length */
+ dev->addr_len = 0; /* hardware address length */
+}
+
/* Initialize Linux network interface.
*
* This routine is called only once for each interface, during Linux network
* registration. */
static int cycx_netdevice_init(struct net_device *dev)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
struct cycx_device *card = chan->card;
struct wan_device *wandev = &card->wandev;
- /* Initialize device driver entry points */
- dev->open = cycx_netdevice_open;
- dev->stop = cycx_netdevice_stop;
- dev->hard_header = cycx_netdevice_hard_header;
- dev->rebuild_header = cycx_netdevice_rebuild_header;
- dev->hard_start_xmit = cycx_netdevice_hard_start_xmit;
- dev->get_stats = cycx_netdevice_get_stats;
-
- /* Initialize media-specific parameters */
- dev->mtu = CYCX_X25_CHAN_MTU;
- dev->type = ARPHRD_HWX25; /* ARP h/w type */
- dev->hard_header_len = 0; /* media header length */
- dev->addr_len = 0; /* hardware address length */
-
if (!chan->svc)
- *(u16*)dev->dev_addr = htons(chan->lcn);
+ *(__be16*)dev->dev_addr = htons(chan->lcn);
/* Initialize hardware parameters (just for reference) */
dev->irq = wandev->irq;
/* Set transmit buffer queue length */
dev->tx_queue_len = 10;
- SET_MODULE_OWNER(dev);
/* Initialize socket buffers */
cycx_x25_set_chan_state(dev, WAN_DISCONNECTED);
* o if there's no more open channels then disconnect physical link. */
static int cycx_netdevice_stop(struct net_device *dev)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
netif_stop_queue(dev);
* Return: media header length. */
static int cycx_netdevice_hard_header(struct sk_buff *skb,
struct net_device *dev, u16 type,
- void *daddr, void *saddr, unsigned len)
+ const void *daddr, const void *saddr,
+ unsigned len)
{
- skb->protocol = type;
+ skb->protocol = htons(type);
return dev->hard_header_len;
}
* bottom half" (with interrupts enabled).
* 2. Setting tbusy flag will inhibit further transmit requests from the
* protocol stack and can be used for flow control with protocol layer. */
-static int cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
+static netdev_tx_t cycx_netdevice_hard_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
struct cycx_device *card = chan->card;
if (!chan->svc)
- chan->protocol = skb->protocol;
+ chan->protocol = ntohs(skb->protocol);
if (card->wandev.state != WAN_CONNECTED)
++chan->ifstats.tx_dropped;
else if (chan->svc && chan->protocol &&
- chan->protocol != skb->protocol) {
+ chan->protocol != ntohs(skb->protocol)) {
printk(KERN_INFO
"%s: unsupported Ethertype 0x%04X on interface %s!\n",
- card->devname, skb->protocol, dev->name);
+ card->devname, ntohs(skb->protocol), dev->name);
++chan->ifstats.tx_errors;
} else if (chan->protocol == ETH_P_IP) {
switch (chan->state) {
case WAN_DISCONNECTED:
if (cycx_x25_chan_connect(dev)) {
netif_stop_queue(dev);
- return -EBUSY;
+ return NETDEV_TX_BUSY;
}
/* fall thru */
case WAN_CONNECTED:
netif_stop_queue(dev);
if (cycx_x25_chan_send(dev, skb))
- return -EBUSY;
+ return NETDEV_TX_BUSY;
break;
default:
if (cycx_x25_chan_send(dev, skb)) {
/* prepare for future retransmissions */
skb_push(skb, 1);
- return -EBUSY;
+ return NETDEV_TX_BUSY;
}
}
free_packet:
dev_kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
/* Get Ethernet-style interface statistics.
* Return a pointer to struct net_device_stats */
static struct net_device_stats *cycx_netdevice_get_stats(struct net_device *dev)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
return chan ? &chan->ifstats : NULL;
}
return;
}
- chan = dev->priv;
+ chan = netdev_priv(dev);
reset_timer(dev);
if (chan->drop_sequence) {
++chan->ifstats.rx_packets;
chan->ifstats.rx_bytes += pktlen;
- skb->mac.raw = skb->data;
+ skb_reset_mac_header(skb);
netif_rx(skb);
- dev->last_rx = jiffies; /* timestamp */
}
/* Connect interrupt handler. */
nibble_to_byte(d + (sizeloc >> 1), rem, sizerem, sizeloc & 1);
dprintk(1, KERN_INFO "%s:lcn=%d, local=%s, remote=%s\n",
- __FUNCTION__, lcn, loc, rem);
+ __func__, lcn, loc, rem);
dev = cycx_x25_get_dev_by_dte_addr(wandev, rem);
if (!dev) {
return;
}
- chan = dev->priv;
+ chan = netdev_priv(dev);
chan->lcn = lcn;
cycx_x25_connect_response(card, chan);
cycx_x25_set_chan_state(dev, WAN_CONNECTED);
cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
cycx_peek(&card->hw, cmd->buf + 1, &key, sizeof(key));
dprintk(1, KERN_INFO "%s: %s:lcn=%d, key=%d\n",
- card->devname, __FUNCTION__, lcn, key);
+ card->devname, __func__, lcn, key);
dev = cycx_x25_get_dev_by_lcn(wandev, -key);
if (!dev) {
}
clear_bit(--key, (void*)&card->u.x.connection_keys);
- chan = dev->priv;
+ chan = netdev_priv(dev);
chan->lcn = lcn;
cycx_x25_set_chan_state(dev, WAN_CONNECTED);
}
cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
dprintk(1, KERN_INFO "%s: %s:lcn=%d\n",
- card->devname, __FUNCTION__, lcn);
+ card->devname, __func__, lcn);
dev = cycx_x25_get_dev_by_lcn(wandev, lcn);
if (!dev) {
/* Invalid channel, discard packet */
u8 lcn;
cycx_peek(&card->hw, cmd->buf, &lcn, sizeof(lcn));
- dprintk(1, KERN_INFO "%s:lcn=%d\n", __FUNCTION__, lcn);
+ dprintk(1, KERN_INFO "%s:lcn=%d\n", __func__, lcn);
dev = cycx_x25_get_dev_by_lcn(wandev, lcn);
if (dev) {
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
cycx_x25_disconnect_response(card, chan->link, lcn);
cycx_x25_set_chan_state(dev, WAN_DISCONNECTED);
struct cycx_x25_channel *chan;
while (dev) {
- chan = (struct cycx_x25_channel*)dev->priv;
+ chan = netdev_priv(dev);
if (chan->lcn == lcn)
break;
struct cycx_x25_channel *chan;
while (dev) {
- chan = (struct cycx_x25_channel*)dev->priv;
+ chan = netdev_priv(dev);
if (!strcmp(chan->addr, dte))
break;
* <0 failure */
static int cycx_x25_chan_connect(struct net_device *dev)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
struct cycx_device *card = chan->card;
if (chan->svc) {
* o if SVC then clear X.25 call */
static void cycx_x25_chan_disconnect(struct net_device *dev)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
if (chan->svc) {
x25_clear_call(chan->card, chan->link, chan->lcn, 0, 0);
static void cycx_x25_chan_timer(unsigned long d)
{
struct net_device *dev = (struct net_device *)d;
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
if (chan->state == WAN_CONNECTED)
cycx_x25_chan_disconnect(dev);
else
printk(KERN_ERR "%s: %s for svc (%s) not connected!\n",
- chan->card->devname, __FUNCTION__, dev->name);
+ chan->card->devname, __func__, dev->name);
}
/* Set logical channel state. */
static void cycx_x25_set_chan_state(struct net_device *dev, u8 state)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
struct cycx_device *card = chan->card;
unsigned long flags;
char *string_state = NULL;
switch (state) {
case WAN_CONNECTED:
string_state = "connected!";
- *(u16*)dev->dev_addr = htons(chan->lcn);
+ *(__be16*)dev->dev_addr = htons(chan->lcn);
netif_wake_queue(dev);
reset_timer(dev);
* to the router. */
static int cycx_x25_chan_send(struct net_device *dev, struct sk_buff *skb)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
struct cycx_device *card = chan->card;
int bitm = 0; /* final packet */
unsigned len = skb->len;
unsigned char *ptr;
if ((skb = dev_alloc_skb(1)) == NULL) {
- printk(KERN_ERR "%s: out of memory\n", __FUNCTION__);
+ printk(KERN_ERR "%s: out of memory\n", __func__);
return;
}
skb->protocol = x25_type_trans(skb, dev);
netif_rx(skb);
- dev->last_rx = jiffies; /* timestamp */
}
/* Convert line speed in bps to a number used by cyclom 2x code. */
if (!len)
len = strlen(str);
- for (; len && is_digit(*str); ++str, --len)
+ for (; len && isdigit(*str); ++str, --len)
val = (val * 10) + (*str - (unsigned) '0');
return val;
static void reset_timer(struct net_device *dev)
{
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
if (chan->svc)
mod_timer(&chan->timer, jiffies+chan->idle_tmout*HZ);
printk(KERN_INFO "---------------------------------------\n");
while(dev) {
- struct cycx_x25_channel *chan = dev->priv;
+ struct cycx_x25_channel *chan = netdev_priv(dev);
printk(KERN_INFO "%-5.5s %-15.15s %d ETH_P_%s\n",
chan->name, chan->addr, netif_queue_stopped(dev),
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