/************************************************************************/
/* Header files */
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/serialP.h>
#include <linux/rcupdate.h>
#include <net/arp.h>
+#include <net/net_namespace.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/time.h>
-
+#include <linux/jiffies.h>
/************************************************************************/
/* Useful structures and definitions */
unsigned long tx_errors; /* Planned stuff */
unsigned long rx_dropped; /* No memory for skb */
unsigned long tx_dropped; /* When MTU change */
- unsigned long rx_over_errors; /* Frame bigger then STRIP buf. */
+ unsigned long rx_over_errors; /* Frame bigger than STRIP buf. */
unsigned long pps_timer; /* Timer to determine pps */
unsigned long rx_pps_count; /* Counter to determine pps */
struct net_device *dev)
{
struct neighbour *neighbor_entry;
+ int ret = 0;
neighbor_entry = neigh_lookup(&arp_tbl, &paddr, dev);
neighbor_entry->used = jiffies;
if (neighbor_entry->nud_state & NUD_VALID) {
memcpy(haddr, neighbor_entry->ha, dev->addr_len);
- return 1;
+ ret = 1;
}
+ neigh_release(neighbor_entry);
}
- return 0;
+ return ret;
}
static void DumpData(char *msg, struct strip *strip_info, __u8 * ptr,
/* General routines for STRIP */
/*
- * get_baud returns the current baud rate, as one of the constants defined in
- * termbits.h
- * If the user has issued a baud rate override using the 'setserial' command
- * and the logical current rate is set to 38.4, then the true baud rate
- * currently in effect (57.6 or 115.2) is returned.
- */
-static unsigned int get_baud(struct tty_struct *tty)
-{
- if (!tty || !tty->termios)
- return (0);
- if ((tty->termios->c_cflag & CBAUD) == B38400 && tty->driver_data) {
- struct async_struct *info =
- (struct async_struct *) tty->driver_data;
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- return (B57600);
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- return (B115200);
- }
- return (tty->termios->c_cflag & CBAUD);
-}
-
-/*
* set_baud sets the baud rate to the rate defined by baudcode
- * Note: The rate B38400 should be avoided, because the user may have
- * issued a 'setserial' speed override to map that to a different speed.
- * We could achieve a true rate of 38400 if we needed to by cancelling
- * any user speed override that is in place, but that might annoy the
- * user, so it is simplest to just avoid using 38400.
*/
-static void set_baud(struct tty_struct *tty, unsigned int baudcode)
+static void set_baud(struct tty_struct *tty, speed_t baudrate)
{
- struct termios old_termios = *(tty->termios);
- tty->termios->c_cflag &= ~CBAUD; /* Clear the old baud setting */
- tty->termios->c_cflag |= baudcode; /* Set the new baud setting */
- tty->driver->set_termios(tty, &old_termios);
+ struct ktermios old_termios;
+
+ mutex_lock(&tty->termios_mutex);
+ old_termios =*(tty->termios);
+ tty_encode_baud_rate(tty, baudrate, baudrate);
+ tty->ops->set_termios(tty, &old_termios);
+ mutex_unlock(&tty->termios_mutex);
}
/*
/* get Nth element of the linked list */
static struct strip *strip_get_idx(loff_t pos)
{
- struct list_head *l;
+ struct strip *str;
int i = 0;
- list_for_each_rcu(l, &strip_list) {
+ list_for_each_entry_rcu(str, &strip_list, list) {
if (pos == i)
- return list_entry(l, struct strip, list);
+ return str;
++i;
}
return NULL;
}
static void *strip_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(RCU)
{
rcu_read_lock();
return *pos ? strip_get_idx(*pos - 1) : SEQ_START_TOKEN;
}
static void strip_seq_stop(struct seq_file *seq, void *v)
+ __releases(RCU)
{
rcu_read_unlock();
}
}
-static struct seq_operations strip_seq_ops = {
+static const struct seq_operations strip_seq_ops = {
.start = strip_seq_start,
.next = strip_seq_next,
.stop = strip_seq_stop,
return seq_open(file, &strip_seq_ops);
}
-static struct file_operations strip_seq_fops = {
+static const struct file_operations strip_seq_fops = {
.owner = THIS_MODULE,
.open = strip_seq_open,
.read = seq_read,
strip_info->watchdog_doreset = jiffies + 1 * HZ;
/* If the user has selected a baud rate above 38.4 see what magic we have to do */
- if (strip_info->user_baud > B38400) {
+ if (strip_info->user_baud > 38400) {
/*
* Subtle stuff: Pay attention :-)
* If the serial port is currently at the user's selected (>38.4) rate,
* issued the ATS304 command last time through, so this time we restore
* the user's selected rate and issue the normal starmode reset string.
*/
- if (strip_info->user_baud == get_baud(tty)) {
+ if (strip_info->user_baud == tty_get_baud_rate(tty)) {
static const char b0[] = "ate0q1s304=57600\r";
static const char b1[] = "ate0q1s304=115200\r";
static const StringDescriptor baudstring[2] =
{ {b0, sizeof(b0) - 1}
, {b1, sizeof(b1) - 1}
};
- set_baud(tty, B19200);
- if (strip_info->user_baud == B57600)
+ set_baud(tty, 19200);
+ if (strip_info->user_baud == 57600)
s = baudstring[0];
- else if (strip_info->user_baud == B115200)
+ else if (strip_info->user_baud == 115200)
s = baudstring[1];
else
s = baudstring[1]; /* For now */
set_baud(tty, strip_info->user_baud);
}
- tty->driver->write(tty, s.string, s.length);
+ tty->ops->write(tty, s.string, s.length);
#ifdef EXT_COUNTERS
strip_info->tx_ebytes += s.length;
#endif
static void strip_write_some_more(struct tty_struct *tty)
{
- struct strip *strip_info = (struct strip *) tty->disc_data;
+ struct strip *strip_info = tty->disc_data;
/* First make sure we're connected. */
if (!strip_info || strip_info->magic != STRIP_MAGIC ||
if (strip_info->tx_left > 0) {
int num_written =
- tty->driver->write(tty, strip_info->tx_head,
+ tty->ops->write(tty, strip_info->tx_head,
strip_info->tx_left);
strip_info->tx_left -= num_written;
strip_info->tx_head += num_written;
#endif
} else { /* Else start transmission of another packet */
- tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
strip_unlock(strip_info);
}
}
* 'broadcast hub' radio (First byte of address being 0xFF means broadcast)
*/
if (haddr.c[0] == 0xFF) {
- u32 brd = 0;
+ __be32 brd = 0;
struct in_device *in_dev;
rcu_read_lock();
int doreset = (long) jiffies - strip_info->watchdog_doreset >= 0;
int doprobe = (long) jiffies - strip_info->watchdog_doprobe >= 0
&& !doreset;
- u32 addr, brd;
+ __be32 addr, brd;
/*
* 1. If we have a packet, encapsulate it and put it in the buffer
*/
strip_info->tx_head = strip_info->tx_buff;
strip_info->tx_left = ptr - strip_info->tx_buff;
- strip_info->tty->flags |= (1 << TTY_DO_WRITE_WAKEUP);
-
+ set_bit(TTY_DO_WRITE_WAKEUP, &strip_info->tty->flags);
/*
* 4. Debugging check to make sure we're not overflowing the buffer.
*/
del_timer(&strip_info->idle_timer);
- if (jiffies - strip_info->pps_timer > HZ) {
+ if (time_after(jiffies, strip_info->pps_timer + HZ)) {
unsigned long t = jiffies - strip_info->pps_timer;
unsigned long rx_pps_count = (strip_info->rx_pps_count * HZ * 8 + t / 2) / t;
unsigned long tx_pps_count = (strip_info->tx_pps_count * HZ * 8 + t / 2) / t;
*/
static int strip_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)
{
struct strip *strip_info = netdev_priv(dev);
STRIP_Header *header = (STRIP_Header *) skb_push(skb, sizeof(STRIP_Header));
/************************************************************************/
/* Receiving routines */
-static int strip_receive_room(struct tty_struct *tty)
-{
- return 0x10000; /* We can handle an infinite amount of data. :-) */
-}
-
/*
* This function parses the response to the ATS300? command,
* extracting the radio version and serial number.
sizeof(zero_address))) {
struct net_device *dev;
read_lock_bh(&dev_base_lock);
- dev = dev_base;
- while (dev) {
+ for_each_netdev(&init_net, dev) {
if (dev->type == strip_info->dev->type &&
!memcmp(dev->dev_addr,
&strip_info->true_dev_addr,
read_unlock_bh(&dev_base_lock);
return (dev);
}
- dev = dev->next;
}
read_unlock_bh(&dev_base_lock);
}
packetlen);
skb->dev = get_strip_dev(strip_info);
skb->protocol = header->protocol;
- skb->mac.raw = skb->data;
+ skb_reset_mac_header(skb);
/* Having put a fake header on the front of the sk_buff for the */
/* benefit of tools like tcpdump, skb_pull now 'consumes' that */
#ifdef EXT_COUNTERS
strip_info->rx_bytes += packetlen;
#endif
- skb->dev->last_rx = jiffies;
netif_rx(skb);
}
}
static void strip_receive_buf(struct tty_struct *tty, const unsigned char *cp,
char *fp, int count)
{
- struct strip *strip_info = (struct strip *) tty->disc_data;
+ struct strip *strip_info = tty->disc_data;
const unsigned char *end = cp + count;
if (!strip_info || strip_info->magic != STRIP_MAGIC
/*
* Here's the order things happen:
* When the user runs "slattach -p strip ..."
- * 1. The TTY module calls strip_open
+ * 1. The TTY module calls strip_open;;
* 2. strip_open calls strip_alloc
* 3. strip_alloc calls register_netdev
* 4. register_netdev calls strip_dev_init
strip_info->working = FALSE;
strip_info->firmware_level = NoStructure;
strip_info->next_command = CompatibilityCommand;
- strip_info->user_baud = get_baud(strip_info->tty);
+ strip_info->user_baud = tty_get_baud_rate(strip_info->tty);
printk(KERN_INFO "%s: Initializing Radio.\n",
strip_info->dev->name);
if (strip_info->tty == NULL)
return -EBUSY;
- strip_info->tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
-
+ clear_bit(TTY_DO_WRITE_WAKEUP, &strip_info->tty->flags);
netif_stop_queue(dev);
/*
return 0;
}
+static const struct header_ops strip_header_ops = {
+ .create = strip_header,
+ .rebuild = strip_rebuild_header,
+};
+
+
+static const struct net_device_ops strip_netdev_ops = {
+ .ndo_open = strip_open_low,
+ .ndo_stop = strip_close_low,
+ .ndo_start_xmit = strip_xmit,
+ .ndo_set_mac_address = strip_set_mac_address,
+ .ndo_get_stats = strip_get_stats,
+ .ndo_change_mtu = strip_change_mtu,
+};
+
/*
* This routine is called by DDI when the
* (dynamically assigned) device is registered
* Finish setting up the DEVICE info.
*/
- SET_MODULE_OWNER(dev);
-
dev->trans_start = 0;
- dev->last_rx = 0;
dev->tx_queue_len = 30; /* Drop after 30 frames queued */
dev->flags = 0;
dev->type = ARPHRD_METRICOM; /* dtang */
dev->hard_header_len = sizeof(STRIP_Header);
/*
- * dev->priv Already holds a pointer to our struct strip
+ * netdev_priv(dev) Already holds a pointer to our struct strip
*/
*(MetricomAddress *) & dev->broadcast = broadcast_address;
dev->dev_addr[0] = 0;
dev->addr_len = sizeof(MetricomAddress);
- /*
- * Pointers to interface service routines.
- */
-
- dev->open = strip_open_low;
- dev->stop = strip_close_low;
- dev->hard_start_xmit = strip_xmit;
- dev->hard_header = strip_header;
- dev->rebuild_header = strip_rebuild_header;
- dev->set_mac_address = strip_set_mac_address;
- dev->get_stats = strip_get_stats;
- dev->change_mtu = strip_change_mtu;
+ dev->header_ops = &strip_header_ops,
+ dev->netdev_ops = &strip_netdev_ops;
}
/*
return NULL; /* If no more memory, return */
- strip_info = dev->priv;
+ strip_info = netdev_priv(dev);
strip_info->dev = dev;
strip_info->magic = STRIP_MAGIC;
static int strip_open(struct tty_struct *tty)
{
- struct strip *strip_info = (struct strip *) tty->disc_data;
+ struct strip *strip_info = tty->disc_data;
/*
* First make sure we're not already connected.
return -EEXIST;
/*
+ * We need a write method.
+ */
+
+ if (tty->ops->write == NULL || tty->ops->set_termios == NULL)
+ return -EOPNOTSUPP;
+
+ /*
* OK. Find a free STRIP channel to use.
*/
if ((strip_info = strip_alloc()) == NULL)
strip_info->tty = tty;
tty->disc_data = strip_info;
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
+ tty->receive_room = 65536;
+
+ tty_driver_flush_buffer(tty);
/*
* Restore default settings
static void strip_close(struct tty_struct *tty)
{
- struct strip *strip_info = (struct strip *) tty->disc_data;
+ struct strip *strip_info = tty->disc_data;
/*
* First make sure we're connected.
static int strip_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct strip *strip_info = (struct strip *) tty->disc_data;
+ struct strip *strip_info = tty->disc_data;
/*
* First make sure we're connected.
return -EFAULT;
return set_mac_address(strip_info, &addr);
}
- /*
- * Allow stty to read, but not set, the serial port
- */
-
- case TCGETS:
- case TCGETA:
- return n_tty_ioctl(tty, file, cmd, arg);
- break;
default:
- return -ENOIOCTLCMD;
+ return tty_mode_ioctl(tty, file, cmd, arg);
break;
}
return 0;
/************************************************************************/
/* Initialization */
-static struct tty_ldisc strip_ldisc = {
+static struct tty_ldisc_ops strip_ldisc = {
.magic = TTY_LDISC_MAGIC,
.name = "strip",
.owner = THIS_MODULE,
.close = strip_close,
.ioctl = strip_ioctl,
.receive_buf = strip_receive_buf,
- .receive_room = strip_receive_room,
.write_wakeup = strip_write_some_more,
};
/*
* Register the status file with /proc
*/
- proc_net_fops_create("strip", S_IFREG | S_IRUGO, &strip_seq_fops);
+ proc_net_fops_create(&init_net, "strip", S_IFREG | S_IRUGO, &strip_seq_fops);
return status;
}
}
/* Unregister with the /proc/net file here. */
- proc_net_remove("strip");
+ proc_net_remove(&init_net, "strip");
if ((i = tty_unregister_ldisc(N_STRIP)))
printk(KERN_ERR "STRIP: can't unregister line discipline (err = %d)\n", i);
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