*/
#define SL_CHECK_TRANSMIT
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/rtnetlink.h>
#include <linux/if_arp.h>
#include <linux/if_slip.h>
+#include <linux/delay.h>
#include <linux/init.h>
#include "slip.h"
#ifdef CONFIG_INET
* on actively running device.
*********************************/
-/*
+/*
Allocate channel buffers.
*/
#endif
}
-/*
+/*
Reallocate slip channel buffers.
*/
if (len < 576 * 2)
len = 576 * 2;
- xbuff = (unsigned char *) kmalloc (len + 4, GFP_ATOMIC);
- rbuff = (unsigned char *) kmalloc (len + 4, GFP_ATOMIC);
+ xbuff = kmalloc(len + 4, GFP_ATOMIC);
+ rbuff = kmalloc(len + 4, GFP_ATOMIC);
#ifdef SL_INCLUDE_CSLIP
- cbuff = (unsigned char *) kmalloc (len + 4, GFP_ATOMIC);
+ cbuff = kmalloc(len + 4, GFP_ATOMIC);
#endif
#endif /* SL_INCLUDE_CSLIP */
sl->rx_bytes+=count;
-
+
skb = dev_alloc_skb(count);
if (skb == NULL) {
printk(KERN_WARNING "%s: memory squeeze, dropping packet.\n", sl->dev->name);
}
skb->dev = sl->dev;
memcpy(skb_put(skb,count), sl->rbuff, count);
- skb->mac.raw=skb->data;
+ skb_reset_mac_header(skb);
skb->protocol=htons(ETH_P_IP);
netif_rx(skb);
sl->dev->last_rx = jiffies;
struct slip *sl = netdev_priv(dev);
/*
- * Finish setting up the DEVICE info.
+ * Finish setting up the DEVICE info.
*/
dev->mtu = sl->mtu;
dev->addr_len = 0;
dev->tx_queue_len = 10;
- SET_MODULE_OWNER(dev);
-
/* New-style flags. */
dev->flags = IFF_NOARP|IFF_POINTOPOINT|IFF_MULTICAST;
}
******************************************/
-static int slip_receive_room(struct tty_struct *tty)
-{
- return 65536; /* We can handle an infinite amount of data. :-) */
-}
-
/*
* Handle the 'receiver data ready' interrupt.
* This function is called by the 'tty_io' module in the kernel when
* be re-entered while running but other ldisc functions may be called
* in parallel
*/
-
+
static void slip_receive_buf(struct tty_struct *tty, const unsigned char *cp, char *fp, int count)
{
struct slip *sl = (struct slip *) tty->disc_data;
struct net_device *dev = NULL;
struct slip *sl;
- if (slip_devs == NULL)
+ if (slip_devs == NULL)
return NULL; /* Master array missing ! */
for (i = 0; i < slip_maxdev; i++) {
slip_devs[i] = NULL;
}
}
-
+
if (!dev) {
char name[IFNAMSIZ];
sprintf(name, "sl%d", i);
sl->outfill_timer.function=sl_outfill;
#endif
slip_devs[i] = dev;
-
+
return sl;
}
if(!capable(CAP_NET_ADMIN))
return -EPERM;
-
+
/* RTnetlink lock is misused here to serialize concurrent
opens of slip channels. There are better ways, but it is
the simplest one.
tty->disc_data = sl;
sl->line = tty_devnum(tty);
sl->pid = current->pid;
-
- /* FIXME: already done before we were called - seems this can go */
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
-
+
if (!test_bit(SLF_INUSE, &sl->flags)) {
/* Perform the low-level SLIP initialization. */
if ((err = sl_alloc_bufs(sl, SL_MTU)) != 0)
/* Done. We have linked the TTY line to a channel. */
rtnl_unlock();
+ tty->receive_room = 65536; /* We don't flow control */
return sl->dev->base_addr;
err_free_bufs:
/*
FIXME: 1,2 are fixed 3 was never true anyway.
-
+
Let me to blame a bit.
1. TTY module calls this funstion on soft interrupt.
2. TTY module calls this function WITH MASKED INTERRUPTS!
By-product (not desired): sl? does not feel hangups and remains open.
It is supposed, that user level program (dip, diald, slattach...)
- will catch SIGHUP and make the rest of work.
+ will catch SIGHUP and make the rest of work.
I see no way to make more with current tty code. --ANK
*/
* STANDARD SLIP ENCAPSULATION *
************************************************************************/
-int
+static int
slip_esc(unsigned char *s, unsigned char *d, int len)
{
unsigned char *ptr = d;
return 0;
/* VSV changes end */
#endif
-
- /* Allow stty to read, but not set, the serial port */
- case TCGETS:
- case TCGETA:
- return n_tty_ioctl(tty, file, cmd, arg);
-
default:
- return -ENOIOCTLCMD;
+ return tty_mode_ioctl(tty, file, cmd, arg);
}
}
break;
case SIOCSLEASE:
- /* Resolve race condition, when ioctl'ing hanged up
+ /* Resolve race condition, when ioctl'ing hanged up
and opened by another process device.
*/
if (sl->tty != current->signal->tty && sl->pid != current->pid) {
.close = slip_close,
.ioctl = slip_ioctl,
.receive_buf = slip_receive_buf,
- .receive_room = slip_receive_room,
.write_wakeup = slip_write_wakeup,
};
printk(KERN_INFO "SLIP linefill/keepalive option.\n");
#endif
- slip_devs = kmalloc(sizeof(struct net_device *)*slip_maxdev, GFP_KERNEL);
+ slip_devs = kzalloc(sizeof(struct net_device *)*slip_maxdev, GFP_KERNEL);
if (!slip_devs) {
printk(KERN_ERR "SLIP: Can't allocate slip devices array! Uaargh! (-> No SLIP available)\n");
return -ENOMEM;
}
- /* Clear the pointer array, we allocate devices when we need them */
- memset(slip_devs, 0, sizeof(struct net_device *)*slip_maxdev);
-
/* Fill in our line protocol discipline, and register it */
if ((status = tty_register_ldisc(N_SLIP, &sl_ldisc)) != 0) {
printk(KERN_ERR "SLIP: can't register line discipline (err = %d)\n", status);
unsigned long timeout = jiffies + HZ;
int busy = 0;
- if (slip_devs == NULL)
+ if (slip_devs == NULL)
return;
/* First of all: check for active disciplines and hangup them.
dev->name);
/* Intentionally leak the control block. */
dev->destructor = NULL;
- }
+ }
unregister_netdev(dev);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff