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Commit fb791b1c authored by David Kilroy's avatar David Kilroy Committed by John W. Linville
Browse files

orinoco: Move scan helpers to a separate file 



No functional change.

Signed-off-by: default avatarDavid Kilroy <kilroyd@googlemail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent aea48b15

drivers/net/wireless/orinoco/Makefile

+1 −1
Original line number Diff line number Diff line 
#

# Makefile for the orinoco wireless device drivers.

#

orinoco-objs := main.o

orinoco-objs := main.o scan.o



obj-$(CONFIG_HERMES)		+= orinoco.o hermes.o hermes_dld.o

obj-$(CONFIG_PCMCIA_HERMES)	+= orinoco_cs.o

drivers/net/wireless/orinoco/main.c

+2 −218
Original line number Diff line number Diff line
@@ -95,6 +95,8 @@ 


#include "hermes_rid.h"

#include "hermes_dld.h"

#include "scan.h"



#include "orinoco.h"



/********************************************************************/
@@ -350,53 +352,6 @@ static inline void set_port_type(struct orinoco_private *priv) 
	}

}



#define ORINOCO_MAX_BSS_COUNT	64

static int orinoco_bss_data_allocate(struct orinoco_private *priv)

{

	if (priv->bss_xbss_data)

		return 0;



	if (priv->has_ext_scan)

		priv->bss_xbss_data = kzalloc(ORINOCO_MAX_BSS_COUNT *

					      sizeof(struct xbss_element),

					      GFP_KERNEL);

	else

		priv->bss_xbss_data = kzalloc(ORINOCO_MAX_BSS_COUNT *

					      sizeof(struct bss_element),

					      GFP_KERNEL);



	if (!priv->bss_xbss_data) {

		printk(KERN_WARNING "Out of memory allocating beacons");

		return -ENOMEM;

	}

	return 0;

}



static void orinoco_bss_data_free(struct orinoco_private *priv)

{

	kfree(priv->bss_xbss_data);

	priv->bss_xbss_data = NULL;

}



#define PRIV_BSS	((struct bss_element *)priv->bss_xbss_data)

#define PRIV_XBSS	((struct xbss_element *)priv->bss_xbss_data)

static void orinoco_bss_data_init(struct orinoco_private *priv)

{

	int i;



	INIT_LIST_HEAD(&priv->bss_free_list);

	INIT_LIST_HEAD(&priv->bss_list);

	if (priv->has_ext_scan)

		for (i = 0; i < ORINOCO_MAX_BSS_COUNT; i++)

			list_add_tail(&(PRIV_XBSS[i].list),

				      &priv->bss_free_list);

	else

		for (i = 0; i < ORINOCO_MAX_BSS_COUNT; i++)

			list_add_tail(&(PRIV_BSS[i].list),

				      &priv->bss_free_list);



}



static inline u8 *orinoco_get_ie(u8 *data, size_t len,

				 enum ieee80211_eid eid)

{
@@ -1857,177 +1812,6 @@ static void orinoco_send_wevents(struct work_struct *work) 
	orinoco_unlock(priv, &flags);

}



static inline void orinoco_clear_scan_results(struct orinoco_private *priv,

					      unsigned long scan_age)

{

	if (priv->has_ext_scan) {

		struct xbss_element *bss;

		struct xbss_element *tmp_bss;



		/* Blow away current list of scan results */

		list_for_each_entry_safe(bss, tmp_bss, &priv->bss_list, list) {

			if (!scan_age ||

			    time_after(jiffies, bss->last_scanned + scan_age)) {

				list_move_tail(&bss->list,

					       &priv->bss_free_list);

				/* Don't blow away ->list, just BSS data */

				memset(&bss->bss, 0, sizeof(bss->bss));

				bss->last_scanned = 0;

			}

		}

	} else {

		struct bss_element *bss;

		struct bss_element *tmp_bss;



		/* Blow away current list of scan results */

		list_for_each_entry_safe(bss, tmp_bss, &priv->bss_list, list) {

			if (!scan_age ||

			    time_after(jiffies, bss->last_scanned + scan_age)) {

				list_move_tail(&bss->list,

					       &priv->bss_free_list);

				/* Don't blow away ->list, just BSS data */

				memset(&bss->bss, 0, sizeof(bss->bss));

				bss->last_scanned = 0;

			}

		}

	}

}



static void orinoco_add_ext_scan_result(struct orinoco_private *priv,

					struct agere_ext_scan_info *atom)

{

	struct xbss_element *bss = NULL;

	int found = 0;



	/* Try to update an existing bss first */

	list_for_each_entry(bss, &priv->bss_list, list) {

		if (compare_ether_addr(bss->bss.bssid, atom->bssid))

			continue;

		/* ESSID lengths */

		if (bss->bss.data[1] != atom->data[1])

			continue;

		if (memcmp(&bss->bss.data[2], &atom->data[2],

			   atom->data[1]))

			continue;

		found = 1;

		break;

	}



	/* Grab a bss off the free list */

	if (!found && !list_empty(&priv->bss_free_list)) {

		bss = list_entry(priv->bss_free_list.next,

				 struct xbss_element, list);

		list_del(priv->bss_free_list.next);



		list_add_tail(&bss->list, &priv->bss_list);

	}



	if (bss) {

		/* Always update the BSS to get latest beacon info */

		memcpy(&bss->bss, atom, sizeof(bss->bss));

		bss->last_scanned = jiffies;

	}

}



static int orinoco_process_scan_results(struct orinoco_private *priv,

					unsigned char *buf,

					int len)

{

	int			offset;		/* In the scan data */

	union hermes_scan_info *atom;

	int			atom_len;



	switch (priv->firmware_type) {

	case FIRMWARE_TYPE_AGERE:

		atom_len = sizeof(struct agere_scan_apinfo);

		offset = 0;

		break;

	case FIRMWARE_TYPE_SYMBOL:

		/* Lack of documentation necessitates this hack.

		 * Different firmwares have 68 or 76 byte long atoms.

		 * We try modulo first.  If the length divides by both,

		 * we check what would be the channel in the second

		 * frame for a 68-byte atom.  76-byte atoms have 0 there.

		 * Valid channel cannot be 0.  */

		if (len % 76)

			atom_len = 68;

		else if (len % 68)

			atom_len = 76;

		else if (len >= 1292 && buf[68] == 0)

			atom_len = 76;

		else

			atom_len = 68;

		offset = 0;

		break;

	case FIRMWARE_TYPE_INTERSIL:

		offset = 4;

		if (priv->has_hostscan) {

			atom_len = le16_to_cpup((__le16 *)buf);

			/* Sanity check for atom_len */

			if (atom_len < sizeof(struct prism2_scan_apinfo)) {

				printk(KERN_ERR "%s: Invalid atom_len in scan "

				       "data: %d\n", priv->ndev->name,

				       atom_len);

				return -EIO;

			}

		} else

			atom_len = offsetof(struct prism2_scan_apinfo, atim);

		break;

	default:

		return -EOPNOTSUPP;

	}



	/* Check that we got an whole number of atoms */

	if ((len - offset) % atom_len) {

		printk(KERN_ERR "%s: Unexpected scan data length %d, "

		       "atom_len %d, offset %d\n", priv->ndev->name, len,

		       atom_len, offset);

		return -EIO;

	}



	orinoco_clear_scan_results(priv, msecs_to_jiffies(15000));



	/* Read the entries one by one */

	for (; offset + atom_len <= len; offset += atom_len) {

		int found = 0;

		struct bss_element *bss = NULL;



		/* Get next atom */

		atom = (union hermes_scan_info *) (buf + offset);



		/* Try to update an existing bss first */

		list_for_each_entry(bss, &priv->bss_list, list) {

			if (compare_ether_addr(bss->bss.a.bssid, atom->a.bssid))

				continue;

			if (le16_to_cpu(bss->bss.a.essid_len) !=

			      le16_to_cpu(atom->a.essid_len))

				continue;

			if (memcmp(bss->bss.a.essid, atom->a.essid,

			      le16_to_cpu(atom->a.essid_len)))

				continue;

			found = 1;

			break;

		}



		/* Grab a bss off the free list */

		if (!found && !list_empty(&priv->bss_free_list)) {

			bss = list_entry(priv->bss_free_list.next,

					 struct bss_element, list);

			list_del(priv->bss_free_list.next);



			list_add_tail(&bss->list, &priv->bss_list);

		}



		if (bss) {

			/* Always update the BSS to get latest beacon info */

			memcpy(&bss->bss, atom, sizeof(bss->bss));

			bss->last_scanned = jiffies;

		}

	}



	return 0;

}



static void __orinoco_ev_info(struct net_device *dev, hermes_t *hw)

{

	struct orinoco_private *priv = netdev_priv(dev);

drivers/net/wireless/orinoco/scan.c

0 → 100644
+233 −0
Original line number Diff line number Diff line 
/* Helpers for managing scan queues

 *

 * See copyright notice in main.c

 */



#include <linux/kernel.h>

#include <linux/string.h>

#include <linux/etherdevice.h>



#include "hermes.h"

#include "orinoco.h"



#include "scan.h"



#define ORINOCO_MAX_BSS_COUNT	64



#define PRIV_BSS	((struct bss_element *)priv->bss_xbss_data)

#define PRIV_XBSS	((struct xbss_element *)priv->bss_xbss_data)



int orinoco_bss_data_allocate(struct orinoco_private *priv)

{

	if (priv->bss_xbss_data)

		return 0;



	if (priv->has_ext_scan)

		priv->bss_xbss_data = kzalloc(ORINOCO_MAX_BSS_COUNT *

					      sizeof(struct xbss_element),

					      GFP_KERNEL);

	else

		priv->bss_xbss_data = kzalloc(ORINOCO_MAX_BSS_COUNT *

					      sizeof(struct bss_element),

					      GFP_KERNEL);



	if (!priv->bss_xbss_data) {

		printk(KERN_WARNING "Out of memory allocating beacons");

		return -ENOMEM;

	}

	return 0;

}



void orinoco_bss_data_free(struct orinoco_private *priv)

{

	kfree(priv->bss_xbss_data);

	priv->bss_xbss_data = NULL;

}



void orinoco_bss_data_init(struct orinoco_private *priv)

{

	int i;



	INIT_LIST_HEAD(&priv->bss_free_list);

	INIT_LIST_HEAD(&priv->bss_list);

	if (priv->has_ext_scan)

		for (i = 0; i < ORINOCO_MAX_BSS_COUNT; i++)

			list_add_tail(&(PRIV_XBSS[i].list),

				      &priv->bss_free_list);

	else

		for (i = 0; i < ORINOCO_MAX_BSS_COUNT; i++)

			list_add_tail(&(PRIV_BSS[i].list),

				      &priv->bss_free_list);



}



void orinoco_clear_scan_results(struct orinoco_private *priv,

				unsigned long scan_age)

{

	if (priv->has_ext_scan) {

		struct xbss_element *bss;

		struct xbss_element *tmp_bss;



		/* Blow away current list of scan results */

		list_for_each_entry_safe(bss, tmp_bss, &priv->bss_list, list) {

			if (!scan_age ||

			    time_after(jiffies, bss->last_scanned + scan_age)) {

				list_move_tail(&bss->list,

					       &priv->bss_free_list);

				/* Don't blow away ->list, just BSS data */

				memset(&bss->bss, 0, sizeof(bss->bss));

				bss->last_scanned = 0;

			}

		}

	} else {

		struct bss_element *bss;

		struct bss_element *tmp_bss;



		/* Blow away current list of scan results */

		list_for_each_entry_safe(bss, tmp_bss, &priv->bss_list, list) {

			if (!scan_age ||

			    time_after(jiffies, bss->last_scanned + scan_age)) {

				list_move_tail(&bss->list,

					       &priv->bss_free_list);

				/* Don't blow away ->list, just BSS data */

				memset(&bss->bss, 0, sizeof(bss->bss));

				bss->last_scanned = 0;

			}

		}

	}

}



void orinoco_add_ext_scan_result(struct orinoco_private *priv,

				 struct agere_ext_scan_info *atom)

{

	struct xbss_element *bss = NULL;

	int found = 0;



	/* Try to update an existing bss first */

	list_for_each_entry(bss, &priv->bss_list, list) {

		if (compare_ether_addr(bss->bss.bssid, atom->bssid))

			continue;

		/* ESSID lengths */

		if (bss->bss.data[1] != atom->data[1])

			continue;

		if (memcmp(&bss->bss.data[2], &atom->data[2],

			   atom->data[1]))

			continue;

		found = 1;

		break;

	}



	/* Grab a bss off the free list */

	if (!found && !list_empty(&priv->bss_free_list)) {

		bss = list_entry(priv->bss_free_list.next,

				 struct xbss_element, list);

		list_del(priv->bss_free_list.next);



		list_add_tail(&bss->list, &priv->bss_list);

	}



	if (bss) {

		/* Always update the BSS to get latest beacon info */

		memcpy(&bss->bss, atom, sizeof(bss->bss));

		bss->last_scanned = jiffies;

	}

}



int orinoco_process_scan_results(struct orinoco_private *priv,

				 unsigned char *buf,

				 int len)

{

	int			offset;		/* In the scan data */

	union hermes_scan_info *atom;

	int			atom_len;



	switch (priv->firmware_type) {

	case FIRMWARE_TYPE_AGERE:

		atom_len = sizeof(struct agere_scan_apinfo);

		offset = 0;

		break;

	case FIRMWARE_TYPE_SYMBOL:

		/* Lack of documentation necessitates this hack.

		 * Different firmwares have 68 or 76 byte long atoms.

		 * We try modulo first.  If the length divides by both,

		 * we check what would be the channel in the second

		 * frame for a 68-byte atom.  76-byte atoms have 0 there.

		 * Valid channel cannot be 0.  */

		if (len % 76)

			atom_len = 68;

		else if (len % 68)

			atom_len = 76;

		else if (len >= 1292 && buf[68] == 0)

			atom_len = 76;

		else

			atom_len = 68;

		offset = 0;

		break;

	case FIRMWARE_TYPE_INTERSIL:

		offset = 4;

		if (priv->has_hostscan) {

			atom_len = le16_to_cpup((__le16 *)buf);

			/* Sanity check for atom_len */

			if (atom_len < sizeof(struct prism2_scan_apinfo)) {

				printk(KERN_ERR "%s: Invalid atom_len in scan "

				       "data: %d\n", priv->ndev->name,

				       atom_len);

				return -EIO;

			}

		} else

			atom_len = offsetof(struct prism2_scan_apinfo, atim);

		break;

	default:

		return -EOPNOTSUPP;

	}



	/* Check that we got an whole number of atoms */

	if ((len - offset) % atom_len) {

		printk(KERN_ERR "%s: Unexpected scan data length %d, "

		       "atom_len %d, offset %d\n", priv->ndev->name, len,

		       atom_len, offset);

		return -EIO;

	}



	orinoco_clear_scan_results(priv, msecs_to_jiffies(15000));



	/* Read the entries one by one */

	for (; offset + atom_len <= len; offset += atom_len) {

		int found = 0;

		struct bss_element *bss = NULL;



		/* Get next atom */

		atom = (union hermes_scan_info *) (buf + offset);



		/* Try to update an existing bss first */

		list_for_each_entry(bss, &priv->bss_list, list) {

			if (compare_ether_addr(bss->bss.a.bssid, atom->a.bssid))

				continue;

			if (le16_to_cpu(bss->bss.a.essid_len) !=

			      le16_to_cpu(atom->a.essid_len))

				continue;

			if (memcmp(bss->bss.a.essid, atom->a.essid,

			      le16_to_cpu(atom->a.essid_len)))

				continue;

			found = 1;

			break;

		}



		/* Grab a bss off the free list */

		if (!found && !list_empty(&priv->bss_free_list)) {

			bss = list_entry(priv->bss_free_list.next,

					 struct bss_element, list);

			list_del(priv->bss_free_list.next);



			list_add_tail(&bss->list, &priv->bss_list);

		}



		if (bss) {

			/* Always update the BSS to get latest beacon info */

			memcpy(&bss->bss, atom, sizeof(bss->bss));

			bss->last_scanned = jiffies;

		}

	}



	return 0;

}

drivers/net/wireless/orinoco/scan.h

0 → 100644
+29 −0
Original line number Diff line number Diff line 
/* Helpers for managing scan queues

 *

 * See copyright notice in main.c

 */

#ifndef _ORINOCO_SCAN_H_

#define _ORINOCO_SCAN_H_



/* Forward declarations */

struct orinoco_private;

struct agere_ext_scan_info;



/* Setup and free memory for scan results */

int orinoco_bss_data_allocate(struct orinoco_private *priv);

void orinoco_bss_data_free(struct orinoco_private *priv);

void orinoco_bss_data_init(struct orinoco_private *priv);



/* Add scan results */

void orinoco_add_ext_scan_result(struct orinoco_private *priv,

				 struct agere_ext_scan_info *atom);

int orinoco_process_scan_results(struct orinoco_private *dev,

				 unsigned char *buf,

				 int len);



/* Clear scan results */

void orinoco_clear_scan_results(struct orinoco_private *priv,

				unsigned long scan_age);





#endif /* _ORINOCO_SCAN_H_ */