* devices like TTY. It interfaces between a raw TTY and the
* kernel's AX.25 protocol layers.
*
- * Authors: Andreas Könsgen <ajk@iehk.rwth-aachen.de>
+ * Authors: Andreas Könsgen <ajk@comnets.uni-bremen.de>
* Ralf Baechle DL5RB <ralf@linux-mips.org>
*
* Quite a lot of stuff "stolen" by Joerg Reuter from slip.c, written by
* Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <linux/init.h>
#include <linux/ip.h>
#include <linux/tcp.h>
-#include <asm/semaphore.h>
+#include <linux/semaphore.h>
#include <asm/atomic.h>
#define SIXPACK_VERSION "Revision: 0.3.0"
unsigned int rx_count;
unsigned int rx_count_cooked;
- /* 6pack interface statistics. */
- struct net_device_stats stats;
-
int mtu; /* Our mtu (to spot changes!) */
int buffsize; /* Max buffers sizes */
if (((sp->status1 & SIXP_DCD_MASK) == 0) && (random < sp->persistence)) {
sp->led_state = 0x70;
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
sp->tx_enable = 1;
- actual = sp->tty->driver->write(sp->tty, sp->xbuff, sp->status2);
+ actual = sp->tty->ops->write(sp->tty, sp->xbuff, sp->status2);
sp->xleft -= actual;
sp->xhead += actual;
sp->led_state = 0x60;
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
sp->status2 = 0;
} else
mod_timer(&sp->tx_t, jiffies + ((when + 1) * HZ) / 100);
*/
if (sp->duplex == 1) {
sp->led_state = 0x70;
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
sp->tx_enable = 1;
- actual = sp->tty->driver->write(sp->tty, sp->xbuff, count);
+ actual = sp->tty->ops->write(sp->tty, sp->xbuff, count);
sp->xleft = count - actual;
sp->xhead = sp->xbuff + actual;
sp->led_state = 0x60;
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
} else {
sp->xleft = count;
sp->xhead = sp->xbuff;
return;
out_drop:
- sp->stats.tx_dropped++;
+ sp->dev->stats.tx_dropped++;
netif_start_queue(sp->dev);
if (net_ratelimit())
printk(KERN_DEBUG "%s: %s - dropped.\n", sp->dev->name, msg);
/* Encapsulate an IP datagram and kick it into a TTY queue. */
-static int sp_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t sp_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct sixpack *sp = netdev_priv(dev);
spin_lock_bh(&sp->lock);
/* We were not busy, so we are now... :-) */
netif_stop_queue(dev);
- sp->stats.tx_bytes += skb->len;
+ dev->stats.tx_bytes += skb->len;
sp_encaps(sp, skb->data, skb->len);
spin_unlock_bh(&sp->lock);
dev_kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
static int sp_open_dev(struct net_device *dev)
/* Return the frame type ID */
static int sp_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
+ 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;
}
-static struct net_device_stats *sp_get_stats(struct net_device *dev)
-{
- struct sixpack *sp = netdev_priv(dev);
- return &sp->stats;
-}
-
static int sp_set_mac_address(struct net_device *dev, void *addr)
{
struct sockaddr_ax25 *sa = addr;
netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
memcpy(dev->dev_addr, &sa->sax25_call, AX25_ADDR_LEN);
+ netif_addr_unlock(dev);
netif_tx_unlock_bh(dev);
return 0;
#endif
}
+static const struct header_ops sp_header_ops = {
+ .create = sp_header,
+ .rebuild = sp_rebuild_header,
+};
+
+static const struct net_device_ops sp_netdev_ops = {
+ .ndo_open = sp_open_dev,
+ .ndo_stop = sp_close,
+ .ndo_start_xmit = sp_xmit,
+ .ndo_set_mac_address = sp_set_mac_address,
+};
+
static void sp_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 = SIXP_MTU;
- dev->hard_start_xmit = sp_xmit;
- dev->open = sp_open_dev;
+ dev->netdev_ops = &sp_netdev_ops;
dev->destructor = free_netdev;
- dev->stop = sp_close;
- dev->hard_header = sp_header;
- dev->get_stats = sp_get_stats;
- dev->set_mac_address = sp_set_mac_address;
+ dev->mtu = SIXP_MTU;
dev->hard_header_len = AX25_MAX_HEADER_LEN;
+ dev->header_ops = &sp_header_ops;
+
dev->addr_len = AX25_ADDR_LEN;
dev->type = ARPHRD_AX25;
dev->tx_queue_len = 10;
- dev->rebuild_header = sp_rebuild_header;
- dev->tx_timeout = NULL;
/* Only activated in AX.25 mode */
- memcpy(dev->broadcast, ax25_bcast, AX25_ADDR_LEN);
- memcpy(dev->dev_addr, ax25_test, AX25_ADDR_LEN);
-
- SET_MODULE_OWNER(dev);
+ memcpy(dev->broadcast, &ax25_bcast, AX25_ADDR_LEN);
+ memcpy(dev->dev_addr, &ax25_defaddr, AX25_ADDR_LEN);
dev->flags = 0;
}
count = sp->rcount + 1;
- sp->stats.rx_bytes += count;
+ sp->dev->stats.rx_bytes += count;
if ((skb = dev_alloc_skb(count)) == NULL)
goto out_mem;
memcpy(ptr, sp->cooked_buf + 1, count);
skb->protocol = ax25_type_trans(skb, sp->dev);
netif_rx(skb);
- sp->dev->last_rx = jiffies;
- sp->stats.rx_packets++;
+ sp->dev->stats.rx_packets++;
return;
out_mem:
- sp->stats.rx_dropped++;
+ sp->dev->stats.rx_dropped++;
}
if (sp->xleft <= 0) {
/* Now serial buffer is almost free & we can start
* transmission of another packet */
- sp->stats.tx_packets++;
+ sp->dev->stats.tx_packets++;
clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
sp->tx_enable = 0;
netif_wake_queue(sp->dev);
}
if (sp->tx_enable) {
- actual = tty->driver->write(tty, sp->xhead, sp->xleft);
+ actual = tty->ops->write(tty, sp->xhead, sp->xleft);
sp->xleft -= actual;
sp->xhead += actual;
}
count--;
if (fp && *fp++) {
if (!test_and_set_bit(SIXPF_ERROR, &sp->flags))
- sp->stats.rx_errors++;
+ sp->dev->stats.rx_errors++;
continue;
}
}
sixpack_decode(sp, buf, count1);
sp_put(sp);
- if (test_and_clear_bit(TTY_THROTTLED, &tty->flags)
- && tty->driver->unthrottle)
- tty->driver->unthrottle(tty);
+ tty_unthrottle(tty);
}
/*
/* resync the TNC */
sp->led_state = 0x60;
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
- sp->tty->driver->write(sp->tty, &resync_cmd, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &resync_cmd, 1);
/* Start resync timer again -- the TNC might be still absent */
tnc_set_sync_state(sp, TNC_UNSYNC_STARTUP);
- sp->tty->driver->write(sp->tty, &inbyte, 1);
+ sp->tty->ops->write(sp->tty, &inbyte, 1);
del_timer(&sp->resync_t);
sp->resync_t.data = (unsigned long) sp;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
+ if (tty->ops->write == NULL)
+ return -EOPNOTSUPP;
dev = alloc_netdev(sizeof(struct sixpack), "sp%d", sp_setup);
if (!dev) {
sp = tty->disc_data;
tty->disc_data = NULL;
write_unlock(&disc_data_lock);
- if (sp == 0)
+ if (!sp)
return;
/*
unsigned int cmd, unsigned long arg)
{
struct sixpack *sp = sp_get(tty);
- struct net_device *dev = sp->dev;
+ struct net_device *dev;
unsigned int tmp, err;
if (!sp)
return -ENXIO;
+ dev = sp->dev;
switch(cmd) {
case SIOCGIFNAME:
if (copy_from_user(&addr,
(void __user *) arg, AX25_ADDR_LEN)) {
- err = -EFAULT;
- break;
- }
-
- netif_tx_lock_bh(dev);
- memcpy(dev->dev_addr, &addr, AX25_ADDR_LEN);
- netif_tx_unlock_bh(dev);
+ err = -EFAULT;
+ break;
+ }
- err = 0;
- break;
- }
+ netif_tx_lock_bh(dev);
+ memcpy(dev->dev_addr, &addr, AX25_ADDR_LEN);
+ netif_tx_unlock_bh(dev);
- /* Allow stty to read, but not set, the serial port */
- case TCGETS:
- case TCGETA:
- err = n_tty_ioctl(tty, (struct file *) file, cmd, arg);
- break;
+ err = 0;
+ break;
+ }
default:
- err = -ENOIOCTLCMD;
+ err = tty_mode_ioctl(tty, file, cmd, arg);
}
sp_put(sp);
return err;
}
-static struct tty_ldisc sp_ldisc = {
+static struct tty_ldisc_ops sp_ldisc = {
.owner = THIS_MODULE,
.magic = TTY_LDISC_MAGIC,
.name = "6pack",
/* Initialize 6pack control device -- register 6pack line discipline */
-static char msg_banner[] __initdata = KERN_INFO \
+static const char msg_banner[] __initdata = KERN_INFO \
"AX.25: 6pack driver, " SIXPACK_VERSION "\n";
-static char msg_regfail[] __initdata = KERN_ERR \
+static const char msg_regfail[] __initdata = KERN_ERR \
"6pack: can't register line discipline (err = %d)\n";
static int __init sixpack_init_driver(void)
printk(KERN_DEBUG "6pack: protocol violation\n");
else
sp->status = 0;
- cmd &= !SIXP_RX_DCD_MASK;
+ cmd &= ~SIXP_RX_DCD_MASK;
}
sp->status = cmd & SIXP_PRIO_DATA_MASK;
} else { /* output watchdog char if idle */
if ((sp->status2 != 0) && (sp->duplex == 1)) {
sp->led_state = 0x70;
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
sp->tx_enable = 1;
- actual = sp->tty->driver->write(sp->tty, sp->xbuff, sp->status2);
+ actual = sp->tty->ops->write(sp->tty, sp->xbuff, sp->status2);
sp->xleft -= actual;
sp->xhead += actual;
sp->led_state = 0x60;
}
/* needed to trigger the TNC watchdog */
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
/* if the state byte has been received, the TNC is present,
so the resync timer can be reset. */
if ((sp->status & SIXP_RX_DCD_MASK) ==
SIXP_RX_DCD_MASK) {
sp->led_state = 0x68;
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
}
} else {
sp->led_state = 0x60;
/* fill trailing bytes with zeroes */
- sp->tty->driver->write(sp->tty, &sp->led_state, 1);
+ sp->tty->ops->write(sp->tty, &sp->led_state, 1);
rest = sp->rx_count;
if (rest != 0)
for (i = rest; i <= 3; i++)
Code Review / linux-2.6.git / blobdiff