* Copyright (C) 2004, 05 Ralf Baechle DL5RB <ralf@linux-mips.org>
* Copyright (C) 2004, 05 Thomas Osterried DL9SAU <thomas@x-berg.in-berlin.de>
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <asm/system.h>
#include <linux/bitops.h>
unsigned char *xhead; /* pointer to next byte to XMIT */
int xleft; /* bytes left in XMIT queue */
- struct net_device_stats stats;
-
/* Detailed SLIP statistics. */
int mtu; /* Our mtu (to spot changes!) */
int buffsize; /* Max buffers sizes */
if (ax->rbuff[0] > 0x0f) {
if (ax->rbuff[0] & 0x80) {
if (check_crc_16(ax->rbuff, ax->rcount) < 0) {
- ax->stats.rx_errors++;
+ ax->dev->stats.rx_errors++;
spin_unlock_bh(&ax->buflock);
return;
}
if (ax->crcmode != CRC_MODE_SMACK && ax->crcauto) {
printk(KERN_INFO
- "mkiss: %s: Switchting to crc-smack\n",
+ "mkiss: %s: Switching to crc-smack\n",
ax->dev->name);
ax->crcmode = CRC_MODE_SMACK;
}
*ax->rbuff &= ~0x80;
} else if (ax->rbuff[0] & 0x20) {
if (check_crc_flex(ax->rbuff, ax->rcount) < 0) {
- ax->stats.rx_errors++;
+ ax->dev->stats.rx_errors++;
spin_unlock_bh(&ax->buflock);
return;
}
if (ax->crcmode != CRC_MODE_FLEX && ax->crcauto) {
printk(KERN_INFO
- "mkiss: %s: Switchting to crc-flexnet\n",
+ "mkiss: %s: Switching to crc-flexnet\n",
ax->dev->name);
ax->crcmode = CRC_MODE_FLEX;
}
*ax->rbuff &= ~0x20;
}
}
- spin_unlock_bh(&ax->buflock);
count = ax->rcount;
if ((skb = dev_alloc_skb(count)) == NULL) {
printk(KERN_ERR "mkiss: %s: memory squeeze, dropping packet.\n",
ax->dev->name);
- ax->stats.rx_dropped++;
+ ax->dev->stats.rx_dropped++;
+ spin_unlock_bh(&ax->buflock);
return;
}
- spin_lock_bh(&ax->buflock);
memcpy(skb_put(skb,count), ax->rbuff, count);
- spin_unlock_bh(&ax->buflock);
skb->protocol = ax25_type_trans(skb, ax->dev);
netif_rx(skb);
- ax->dev->last_rx = jiffies;
- ax->stats.rx_packets++;
- ax->stats.rx_bytes += count;
+ ax->dev->stats.rx_packets++;
+ ax->dev->stats.rx_bytes += count;
+ spin_unlock_bh(&ax->buflock);
}
static void kiss_unesc(struct mkiss *ax, unsigned char s)
return;
}
- ax->stats.rx_over_errors++;
+ ax->dev->stats.rx_over_errors++;
set_bit(AXF_ERROR, &ax->flags);
}
spin_unlock_bh(&ax->buflock);
{
struct sockaddr_ax25 *sa = addr;
- spin_lock_irq(&dev->xmit_lock);
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
memcpy(dev->dev_addr, &sa->sax25_call, AX25_ADDR_LEN);
- spin_unlock_irq(&dev->xmit_lock);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
return 0;
}
memcpy(ax->xbuff, ax->xhead, ax->xleft);
} else {
ax->xleft = 0;
- ax->stats.tx_dropped++;
+ dev->stats.tx_dropped++;
}
}
memcpy(ax->rbuff, orbuff, ax->rcount);
} else {
ax->rcount = 0;
- ax->stats.rx_over_errors++;
+ dev->stats.rx_over_errors++;
set_bit(AXF_ERROR, &ax->flags);
}
}
if (len > ax->mtu) { /* Sigh, shouldn't occur BUT ... */
len = ax->mtu;
printk(KERN_ERR "mkiss: %s: truncating oversized transmit packet!\n", ax->dev->name);
- ax->stats.tx_dropped++;
+ dev->stats.tx_dropped++;
netif_start_queue(dev);
return;
}
spin_unlock_bh(&ax->buflock);
set_bit(TTY_DO_WRITE_WAKEUP, &ax->tty->flags);
- actual = ax->tty->driver->write(ax->tty, ax->xbuff, count);
- ax->stats.tx_packets++;
- ax->stats.tx_bytes += actual;
+ actual = ax->tty->ops->write(ax->tty, ax->xbuff, count);
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += actual;
ax->dev->trans_start = jiffies;
ax->xleft = count - actual;
}
/* Encapsulate an AX.25 packet and kick it into a TTY queue. */
-static int ax_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t ax_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct mkiss *ax = netdev_priv(dev);
if (!netif_running(dev)) {
printk(KERN_ERR "mkiss: %s: xmit call when iface is down\n", dev->name);
- return 1;
+ return NETDEV_TX_BUSY;
}
if (netif_queue_stopped(dev)) {
*/
if (time_before(jiffies, dev->trans_start + 20 * HZ)) {
/* 20 sec timeout not reached */
- return 1;
+ return NETDEV_TX_BUSY;
}
printk(KERN_ERR "mkiss: %s: transmit timed out, %s?\n", dev->name,
- (ax->tty->driver->chars_in_buffer(ax->tty) || ax->xleft) ?
+ (tty_chars_in_buffer(ax->tty) || ax->xleft) ?
"bad line quality" : "driver error");
ax->xleft = 0;
kfree_skb(skb);
}
- return 0;
+ return NETDEV_TX_OK;
}
static int ax_open_dev(struct net_device *dev)
#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
/* Return the frame type ID */
-static int ax_header(struct sk_buff *skb, struct net_device *dev, unsigned short type,
- void *daddr, void *saddr, unsigned len)
+static int ax_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type, const void *daddr,
+ const void *saddr, unsigned len)
{
#ifdef CONFIG_INET
- if (type != htons(ETH_P_AX25))
+ if (type != ETH_P_AX25)
return ax25_hard_header(skb, dev, type, daddr, saddr, len);
#endif
return 0;
return 0;
}
-static struct net_device_stats *ax_get_stats(struct net_device *dev)
-{
- struct mkiss *ax = netdev_priv(dev);
+static const struct header_ops ax_header_ops = {
+ .create = ax_header,
+ .rebuild = ax_rebuild_header,
+};
- return &ax->stats;
-}
+static const struct net_device_ops ax_netdev_ops = {
+ .ndo_open = ax_open_dev,
+ .ndo_stop = ax_close,
+ .ndo_start_xmit = ax_xmit,
+ .ndo_set_mac_address = ax_set_mac_address,
+};
static void ax_setup(struct net_device *dev)
{
- static char ax25_bcast[AX25_ADDR_LEN] =
- {'Q'<<1,'S'<<1,'T'<<1,' '<<1,' '<<1,' '<<1,'0'<<1};
- static char ax25_test[AX25_ADDR_LEN] =
- {'L'<<1,'I'<<1,'N'<<1,'U'<<1,'X'<<1,' '<<1,'1'<<1};
-
/* Finish setting up the DEVICE info. */
dev->mtu = AX_MTU;
- dev->hard_start_xmit = ax_xmit;
- dev->open = ax_open_dev;
- dev->stop = ax_close;
- dev->get_stats = ax_get_stats;
- dev->set_mac_address = ax_set_mac_address;
dev->hard_header_len = 0;
dev->addr_len = 0;
dev->type = ARPHRD_AX25;
dev->tx_queue_len = 10;
- dev->hard_header = ax_header;
- dev->rebuild_header = ax_rebuild_header;
+ dev->header_ops = &ax_header_ops;
+ dev->netdev_ops = &ax_netdev_ops;
+
- memcpy(dev->broadcast, ax25_bcast, AX25_ADDR_LEN);
- memcpy(dev->dev_addr, ax25_test, AX25_ADDR_LEN);
+ memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
+ memcpy(dev->dev_addr, &ax25_defaddr, AX25_ADDR_LEN);
dev->flags = IFF_BROADCAST | IFF_MULTICAST;
}
if (!capable(CAP_NET_ADMIN))
return -EPERM;
+ if (tty->ops->write == NULL)
+ return -EOPNOTSUPP;
dev = alloc_netdev(sizeof(struct mkiss), "ax%d", ax_setup);
if (!dev) {
ax->tty = tty;
tty->disc_data = ax;
+ tty->receive_room = 65535;
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
+ tty_driver_flush_buffer(tty);
/* Restore default settings */
dev->type = ARPHRD_AX25;
tty->disc_data = NULL;
write_unlock(&disc_data_lock);
- if (ax == 0)
+ if (!ax)
return;
/*
unsigned int cmd, unsigned long arg)
{
struct mkiss *ax = mkiss_get(tty);
- struct net_device *dev = ax->dev;
+ struct net_device *dev;
unsigned int tmp, err;
/* First make sure we're connected. */
if (ax == NULL)
return -ENXIO;
+ dev = ax->dev;
switch (cmd) {
case SIOCGIFNAME:
break;
}
- spin_lock_irq(&dev->xmit_lock);
+ netif_tx_lock_bh(dev);
memcpy(dev->dev_addr, addr, AX25_ADDR_LEN);
- spin_unlock_irq(&dev->xmit_lock);
+ netif_tx_unlock_bh(dev);
err = 0;
break;
while (count--) {
if (fp != NULL && *fp++) {
if (!test_and_set_bit(AXF_ERROR, &ax->flags))
- ax->stats.rx_errors++;
+ ax->dev->stats.rx_errors++;
cp++;
continue;
}
}
mkiss_put(ax);
- if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)
- && tty->driver->unthrottle)
- tty->driver->unthrottle(tty);
-}
-
-static int mkiss_receive_room(struct tty_struct *tty)
-{
- return 65536; /* We can handle an infinite amount of data. :-) */
+ tty_unthrottle(tty);
}
/*
goto out;
}
- actual = tty->driver->write(tty, ax->xhead, ax->xleft);
+ actual = tty->ops->write(tty, ax->xhead, ax->xleft);
ax->xleft -= actual;
ax->xhead += actual;
mkiss_put(ax);
}
-static struct tty_ldisc ax_ldisc = {
+static struct tty_ldisc_ops ax_ldisc = {
.owner = THIS_MODULE,
.magic = TTY_LDISC_MAGIC,
.name = "mkiss",
.close = mkiss_close,
.ioctl = mkiss_ioctl,
.receive_buf = mkiss_receive_buf,
- .receive_room = mkiss_receive_room,
.write_wakeup = mkiss_write_wakeup
};
-static char banner[] __initdata = KERN_INFO \
+static const char banner[] __initdata = KERN_INFO \
"mkiss: AX.25 Multikiss, Hans Albas PE1AYX\n";
-static char msg_regfail[] __initdata = KERN_ERR \
+static const char msg_regfail[] __initdata = KERN_ERR \
"mkiss: can't register line discipline (err = %d)\n";
static int __init mkiss_init_driver(void)
printk(banner);
- if ((status = tty_register_ldisc(N_AX25, &ax_ldisc)) != 0)
- printk(msg_regfail);
+ status = tty_register_ldisc(N_AX25, &ax_ldisc);
+ if (status != 0)
+ printk(msg_regfail, status);
return status;
}
MODULE_AUTHOR("Ralf Baechle DL5RB <ralf@linux-mips.org>");
MODULE_DESCRIPTION("KISS driver for AX.25 over TTYs");
-MODULE_PARM(crc_force, "i");
+module_param(crc_force, int, 0);
MODULE_PARM_DESC(crc_force, "crc [0 = auto | 1 = none | 2 = flexnet | 3 = smack]");
MODULE_LICENSE("GPL");
MODULE_ALIAS_LDISC(N_AX25);