irda: move net/irda/ to drivers/staging/irda/net/

It's time to get rid of IRDA.  It's long been broken, and no one seems
to use it anymore.  So move it to staging and after a while, we can
delete it from there.

To start, move the network irda core from net/irda to
drivers/staging/irda/net/

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 417 deletions

diff --git a/net/irda/discovery.c b/net/irda/discovery.c
deleted file mode 100644
index 364d70aed068..000000000000
--- a/net/irda/discovery.c
+++ /dev/null
@@ -1,417 +0,0 @@
-/*********************************************************************
- *
- * Filename:      discovery.c
- * Version:       0.1
- * Description:   Routines for handling discoveries at the IrLMP layer
- * Status:        Experimental.
- * Author:        Dag Brattli <dagb@cs.uit.no>
- * Created at:    Tue Apr  6 15:33:50 1999
- * Modified at:   Sat Oct  9 17:11:31 1999
- * Modified by:   Dag Brattli <dagb@cs.uit.no>
- * Modified at:   Fri May 28  3:11 CST 1999
- * Modified by:   Horst von Brand <vonbrand@sleipnir.valparaiso.cl>
- *
- *     Copyright (c) 1999 Dag Brattli, All Rights Reserved.
- *
- *     This program is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of
- *     the License, or (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program; if not, see <http://www.gnu.org/licenses/>.
- *
- ********************************************************************/
-
-#include <linux/string.h>
-#include <linux/socket.h>
-#include <linux/fs.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-
-#include <net/irda/irda.h>
-#include <net/irda/irlmp.h>
-
-#include <net/irda/discovery.h>
-
-#include <asm/unaligned.h>
-
-/*
- * Function irlmp_add_discovery (cachelog, discovery)
- *
- *    Add a new discovery to the cachelog, and remove any old discoveries
- *    from the same device
- *
- * Note : we try to preserve the time this device was *first* discovered
- * (as opposed to the time of last discovery used for cleanup). This is
- * used by clients waiting for discovery events to tell if the device
- * discovered is "new" or just the same old one. They can't rely there
- * on a binary flag (new/old), because not all discovery events are
- * propagated to them, and they might not always listen, so they would
- * miss some new devices popping up...
- * Jean II
- */
-void irlmp_add_discovery(hashbin_t *cachelog, discovery_t *new)
-{
-	discovery_t *discovery, *node;
-	unsigned long flags;
-
-	/* Set time of first discovery if node is new (see below) */
-	new->firststamp = new->timestamp;
-
-	spin_lock_irqsave(&cachelog->hb_spinlock, flags);
-
-	/*
-	 * Remove all discoveries of devices that has previously been
-	 * discovered on the same link with the same name (info), or the
-	 * same daddr. We do this since some devices (mostly PDAs) change
-	 * their device address between every discovery.
-	 */
-	discovery = (discovery_t *) hashbin_get_first(cachelog);
-	while (discovery != NULL ) {
-		node = discovery;
-
-		/* Be sure to stay one item ahead */
-		discovery = (discovery_t *) hashbin_get_next(cachelog);
-
-		if ((node->data.saddr == new->data.saddr) &&
-		    ((node->data.daddr == new->data.daddr) ||
-		     (strcmp(node->data.info, new->data.info) == 0)))
-		{
-			/* This discovery is a previous discovery
-			 * from the same device, so just remove it
-			 */
-			hashbin_remove_this(cachelog, (irda_queue_t *) node);
-			/* Check if hints bits are unchanged */
-			if (get_unaligned((__u16 *)node->data.hints) == get_unaligned((__u16 *)new->data.hints))
-				/* Set time of first discovery for this node */
-				new->firststamp = node->firststamp;
-			kfree(node);
-		}
-	}
-
-	/* Insert the new and updated version */
-	hashbin_insert(cachelog, (irda_queue_t *) new, new->data.daddr, NULL);
-
-	spin_unlock_irqrestore(&cachelog->hb_spinlock, flags);
-}
-
-/*
- * Function irlmp_add_discovery_log (cachelog, log)
- *
- *    Merge a disovery log into the cachelog.
- *
- */
-void irlmp_add_discovery_log(hashbin_t *cachelog, hashbin_t *log)
-{
-	discovery_t *discovery;
-
-	/*
-	 *  If log is missing this means that IrLAP was unable to perform the
-	 *  discovery, so restart discovery again with just the half timeout
-	 *  of the normal one.
-	 */
-	/* Well... It means that there was nobody out there - Jean II */
-	if (log == NULL) {
-		/* irlmp_start_discovery_timer(irlmp, 150); */
-		return;
-	}
-
-	/*
-	 * Locking : we are the only owner of this discovery log, so
-	 * no need to lock it.
-	 * We just need to lock the global log in irlmp_add_discovery().
-	 */
-	discovery = (discovery_t *) hashbin_remove_first(log);
-	while (discovery != NULL) {
-		irlmp_add_discovery(cachelog, discovery);
-
-		discovery = (discovery_t *) hashbin_remove_first(log);
-	}
-
-	/* Delete the now empty log */
-	hashbin_delete(log, (FREE_FUNC) kfree);
-}
-
-/*
- * Function irlmp_expire_discoveries (log, saddr, force)
- *
- *    Go through all discoveries and expire all that has stayed too long
- *
- * Note : this assume that IrLAP won't change its saddr, which
- * currently is a valid assumption...
- */
-void irlmp_expire_discoveries(hashbin_t *log, __u32 saddr, int force)
-{
-	discovery_t *		discovery;
-	discovery_t *		curr;
-	unsigned long		flags;
-	discinfo_t *		buffer = NULL;
-	int			n;		/* Size of the full log */
-	int			i = 0;		/* How many we expired */
-
-	IRDA_ASSERT(log != NULL, return;);
-	spin_lock_irqsave(&log->hb_spinlock, flags);
-
-	discovery = (discovery_t *) hashbin_get_first(log);
-	while (discovery != NULL) {
-		/* Be sure to be one item ahead */
-		curr = discovery;
-		discovery = (discovery_t *) hashbin_get_next(log);
-
-		/* Test if it's time to expire this discovery */
-		if ((curr->data.saddr == saddr) &&
-		    (force ||
-		     ((jiffies - curr->timestamp) > DISCOVERY_EXPIRE_TIMEOUT)))
-		{
-			/* Create buffer as needed.
-			 * As this function get called a lot and most time
-			 * we don't have anything to put in the log (we are
-			 * quite picky), we can save a lot of overhead
-			 * by not calling kmalloc. Jean II */
-			if(buffer == NULL) {
-				/* Create the client specific buffer */
-				n = HASHBIN_GET_SIZE(log);
-				buffer = kmalloc(n * sizeof(struct irda_device_info), GFP_ATOMIC);
-				if (buffer == NULL) {
-					spin_unlock_irqrestore(&log->hb_spinlock, flags);
-					return;
-				}
-
-			}
-
-			/* Copy discovery information */
-			memcpy(&(buffer[i]), &(curr->data),
-			       sizeof(discinfo_t));
-			i++;
-
-			/* Remove it from the log */
-			curr = hashbin_remove_this(log, (irda_queue_t *) curr);
-			kfree(curr);
-		}
-	}
-
-	/* Drop the spinlock before calling the higher layers, as
-	 * we can't guarantee they won't call us back and create a
-	 * deadlock. We will work on our own private data, so we
-	 * don't care to be interrupted. - Jean II */
-	spin_unlock_irqrestore(&log->hb_spinlock, flags);
-
-	if(buffer == NULL)
-		return;
-
-	/* Tell IrLMP and registered clients about it */
-	irlmp_discovery_expiry(buffer, i);
-
-	/* Free up our buffer */
-	kfree(buffer);
-}
-
-#if 0
-/*
- * Function irlmp_dump_discoveries (log)
- *
- *    Print out all discoveries in log
- *
- */
-void irlmp_dump_discoveries(hashbin_t *log)
-{
-	discovery_t *discovery;
-
-	IRDA_ASSERT(log != NULL, return;);
-
-	discovery = (discovery_t *) hashbin_get_first(log);
-	while (discovery != NULL) {
-		pr_debug("Discovery:\n");
-		pr_debug("  daddr=%08x\n", discovery->data.daddr);
-		pr_debug("  saddr=%08x\n", discovery->data.saddr);
-		pr_debug("  nickname=%s\n", discovery->data.info);
-
-		discovery = (discovery_t *) hashbin_get_next(log);
-	}
-}
-#endif
-
-/*
- * Function irlmp_copy_discoveries (log, pn, mask)
- *
- *    Copy all discoveries in a buffer
- *
- * This function implement a safe way for lmp clients to access the
- * discovery log. The basic problem is that we don't want the log
- * to change (add/remove) while the client is reading it. If the
- * lmp client manipulate directly the hashbin, he is sure to get
- * into troubles...
- * The idea is that we copy all the current discovery log in a buffer
- * which is specific to the client and pass this copy to him. As we
- * do this operation with the spinlock grabbed, we are safe...
- * Note : we don't want those clients to grab the spinlock, because
- * we have no control on how long they will hold it...
- * Note : we choose to copy the log in "struct irda_device_info" to
- * save space...
- * Note : the client must kfree himself() the log...
- * Jean II
- */
-struct irda_device_info *irlmp_copy_discoveries(hashbin_t *log, int *pn,
-						__u16 mask, int old_entries)
-{
-	discovery_t *		discovery;
-	unsigned long		flags;
-	discinfo_t *		buffer = NULL;
-	int			j_timeout = (sysctl_discovery_timeout * HZ);
-	int			n;		/* Size of the full log */
-	int			i = 0;		/* How many we picked */
-
-	IRDA_ASSERT(pn != NULL, return NULL;);
-	IRDA_ASSERT(log != NULL, return NULL;);
-
-	/* Save spin lock */
-	spin_lock_irqsave(&log->hb_spinlock, flags);
-
-	discovery = (discovery_t *) hashbin_get_first(log);
-	while (discovery != NULL) {
-		/* Mask out the ones we don't want :
-		 * We want to match the discovery mask, and to get only
-		 * the most recent one (unless we want old ones) */
-		if ((get_unaligned((__u16 *)discovery->data.hints) & mask) &&
-		    ((old_entries) ||
-		     ((jiffies - discovery->firststamp) < j_timeout))) {
-			/* Create buffer as needed.
-			 * As this function get called a lot and most time
-			 * we don't have anything to put in the log (we are
-			 * quite picky), we can save a lot of overhead
-			 * by not calling kmalloc. Jean II */
-			if(buffer == NULL) {
-				/* Create the client specific buffer */
-				n = HASHBIN_GET_SIZE(log);
-				buffer = kmalloc(n * sizeof(struct irda_device_info), GFP_ATOMIC);
-				if (buffer == NULL) {
-					spin_unlock_irqrestore(&log->hb_spinlock, flags);
-					return NULL;
-				}
-
-			}
-
-			/* Copy discovery information */
-			memcpy(&(buffer[i]), &(discovery->data),
-			       sizeof(discinfo_t));
-			i++;
-		}
-		discovery = (discovery_t *) hashbin_get_next(log);
-	}
-
-	spin_unlock_irqrestore(&log->hb_spinlock, flags);
-
-	/* Get the actual number of device in the buffer and return */
-	*pn = i;
-	return buffer;
-}
-
-#ifdef CONFIG_PROC_FS
-static inline discovery_t *discovery_seq_idx(loff_t pos)
-
-{
-	discovery_t *discovery;
-
-	for (discovery = (discovery_t *) hashbin_get_first(irlmp->cachelog);
-	     discovery != NULL;
-	     discovery = (discovery_t *) hashbin_get_next(irlmp->cachelog)) {
-		if (pos-- == 0)
-			break;
-	}
-
-	return discovery;
-}
-
-static void *discovery_seq_start(struct seq_file *seq, loff_t *pos)
-{
-	spin_lock_irq(&irlmp->cachelog->hb_spinlock);
-	return *pos ? discovery_seq_idx(*pos - 1) : SEQ_START_TOKEN;
-}
-
-static void *discovery_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-{
-	++*pos;
-	return (v == SEQ_START_TOKEN)
-		? (void *) hashbin_get_first(irlmp->cachelog)
-		: (void *) hashbin_get_next(irlmp->cachelog);
-}
-
-static void discovery_seq_stop(struct seq_file *seq, void *v)
-{
-	spin_unlock_irq(&irlmp->cachelog->hb_spinlock);
-}
-
-static int discovery_seq_show(struct seq_file *seq, void *v)
-{
-	if (v == SEQ_START_TOKEN)
-		seq_puts(seq, "IrLMP: Discovery log:\n\n");
-	else {
-		const discovery_t *discovery = v;
-
-		seq_printf(seq, "nickname: %s, hint: 0x%02x%02x",
-			   discovery->data.info,
-			   discovery->data.hints[0],
-			   discovery->data.hints[1]);
-#if 0
-		if ( discovery->data.hints[0] & HINT_PNP)
-			seq_puts(seq, "PnP Compatible ");
-		if ( discovery->data.hints[0] & HINT_PDA)
-			seq_puts(seq, "PDA/Palmtop ");
-		if ( discovery->data.hints[0] & HINT_COMPUTER)
-			seq_puts(seq, "Computer ");
-		if ( discovery->data.hints[0] & HINT_PRINTER)
-			seq_puts(seq, "Printer ");
-		if ( discovery->data.hints[0] & HINT_MODEM)
-			seq_puts(seq, "Modem ");
-		if ( discovery->data.hints[0] & HINT_FAX)
-			seq_puts(seq, "Fax ");
-		if ( discovery->data.hints[0] & HINT_LAN)
-			seq_puts(seq, "LAN Access ");
-
-		if ( discovery->data.hints[1] & HINT_TELEPHONY)
-			seq_puts(seq, "Telephony ");
-		if ( discovery->data.hints[1] & HINT_FILE_SERVER)
-			seq_puts(seq, "File Server ");
-		if ( discovery->data.hints[1] & HINT_COMM)
-			seq_puts(seq, "IrCOMM ");
-		if ( discovery->data.hints[1] & HINT_OBEX)
-			seq_puts(seq, "IrOBEX ");
-#endif
-		seq_printf(seq,", saddr: 0x%08x, daddr: 0x%08x\n\n",
-			       discovery->data.saddr,
-			       discovery->data.daddr);
-
-		seq_putc(seq, '\n');
-	}
-	return 0;
-}
-
-static const struct seq_operations discovery_seq_ops = {
-	.start  = discovery_seq_start,
-	.next   = discovery_seq_next,
-	.stop   = discovery_seq_stop,
-	.show   = discovery_seq_show,
-};
-
-static int discovery_seq_open(struct inode *inode, struct file *file)
-{
-	IRDA_ASSERT(irlmp != NULL, return -EINVAL;);
-
-	return seq_open(file, &discovery_seq_ops);
-}
-
-const struct file_operations discovery_seq_fops = {
-	.owner		= THIS_MODULE,
-	.open           = discovery_seq_open,
-	.read           = seq_read,
-	.llseek         = seq_lseek,
-	.release	= seq_release,
-};
-#endif