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-rw-r--r--include/net/ieee80211softmac.h373
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diff --git a/include/net/ieee80211softmac.h b/include/net/ieee80211softmac.h
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index 1ef6282..0000000
--- a/include/net/ieee80211softmac.h
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-/*
- * ieee80211softmac.h - public interface to the softmac
- *
- * Copyright (c) 2005 Johannes Berg <johannes@sipsolutions.net>
- * Joseph Jezak <josejx@gentoo.org>
- * Larry Finger <Larry.Finger@lwfinger.net>
- * Danny van Dyk <kugelfang@gentoo.org>
- * Michael Buesch <mbuesch@freenet.de>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called COPYING.
- */
-
-#ifndef IEEE80211SOFTMAC_H_
-#define IEEE80211SOFTMAC_H_
-
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/list.h>
-#include <net/ieee80211.h>
-
-/* Once the API is considered more or less stable,
- * this should be incremented on API incompatible changes.
- */
-#define IEEE80211SOFTMAC_API 0
-
-#define IEEE80211SOFTMAC_MAX_RATES_LEN 8
-#define IEEE80211SOFTMAC_MAX_EX_RATES_LEN 255
-
-struct ieee80211softmac_ratesinfo {
- u8 count;
- u8 rates[IEEE80211SOFTMAC_MAX_RATES_LEN + IEEE80211SOFTMAC_MAX_EX_RATES_LEN];
-};
-
-/* internal structures */
-struct ieee80211softmac_network;
-struct ieee80211softmac_scaninfo;
-
-struct ieee80211softmac_essid {
- u8 len;
- char data[IW_ESSID_MAX_SIZE+1];
-};
-
-struct ieee80211softmac_wpa {
- char *IE;
- int IElen;
- int IEbuflen;
-};
-
-/*
- * Information about association
- */
-struct ieee80211softmac_assoc_info {
-
- struct mutex mutex;
-
- /*
- * This is the requested ESSID. It is written
- * only by the WX handlers.
- *
- */
- struct ieee80211softmac_essid req_essid;
- /*
- * the ESSID of the network we're currently
- * associated (or trying) to. This is
- * updated to the network's actual ESSID
- * even if the requested ESSID was 'ANY'
- */
- struct ieee80211softmac_essid associate_essid;
-
- /* BSSID we're trying to associate to */
- char bssid[ETH_ALEN];
-
- /* some flags.
- * static_essid is valid if the essid is constant,
- * this is for use by the wx handlers only.
- *
- * associating is true, if the network has been
- * auth'ed on and we are in the process of associating.
- *
- * bssvalid is true if we found a matching network
- * and saved it's BSSID into the bssid above.
- *
- * bssfixed is used for SIOCSIWAP.
- */
- u8 static_essid;
- u8 short_preamble_available;
- u8 associating;
- u8 associated;
- u8 assoc_wait;
- u8 bssvalid;
- u8 bssfixed;
-
- /* Scan retries remaining */
- int scan_retry;
-
- struct delayed_work work;
- struct delayed_work timeout;
-};
-
-struct ieee80211softmac_bss_info {
- /* Rates supported by the network */
- struct ieee80211softmac_ratesinfo supported_rates;
-
- /* This indicates whether frames can currently be transmitted with
- * short preamble (only use this variable during TX at CCK rates) */
- u8 short_preamble:1;
-
- /* This indicates whether protection (e.g. self-CTS) should be used
- * when transmitting with OFDM modulation */
- u8 use_protection:1;
-};
-
-enum {
- IEEE80211SOFTMAC_AUTH_OPEN_REQUEST = 1,
- IEEE80211SOFTMAC_AUTH_OPEN_RESPONSE = 2,
-};
-
-enum {
- IEEE80211SOFTMAC_AUTH_SHARED_REQUEST = 1,
- IEEE80211SOFTMAC_AUTH_SHARED_CHALLENGE = 2,
- IEEE80211SOFTMAC_AUTH_SHARED_RESPONSE = 3,
- IEEE80211SOFTMAC_AUTH_SHARED_PASS = 4,
-};
-
-/* We should make these tunable
- * AUTH_TIMEOUT seems really long, but that's what it is in BSD */
-#define IEEE80211SOFTMAC_AUTH_TIMEOUT (12 * HZ)
-#define IEEE80211SOFTMAC_AUTH_RETRY_LIMIT 5
-#define IEEE80211SOFTMAC_ASSOC_SCAN_RETRY_LIMIT 3
-
-struct ieee80211softmac_txrates {
- /* The Bit-Rate to be used for multicast frames. */
- u8 mcast_rate;
-
- /* The Bit-Rate to be used for multicast management frames. */
- u8 mgt_mcast_rate;
-
- /* The Bit-Rate to be used for any other (normal) data packet. */
- u8 default_rate;
- /* The Bit-Rate to be used for default fallback
- * (If the device supports fallback and hardware-retry)
- */
- u8 default_fallback;
-
- /* This is the rate that the user asked for */
- u8 user_rate;
-};
-
-/* Bits for txrates_change callback. */
-#define IEEE80211SOFTMAC_TXRATECHG_DEFAULT (1 << 0) /* default_rate */
-#define IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK (1 << 1) /* default_fallback */
-#define IEEE80211SOFTMAC_TXRATECHG_MCAST (1 << 2) /* mcast_rate */
-#define IEEE80211SOFTMAC_TXRATECHG_MGT_MCAST (1 << 3) /* mgt_mcast_rate */
-
-#define IEEE80211SOFTMAC_BSSINFOCHG_RATES (1 << 0) /* supported_rates */
-#define IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE (1 << 1) /* short_preamble */
-#define IEEE80211SOFTMAC_BSSINFOCHG_PROTECTION (1 << 2) /* use_protection */
-
-struct ieee80211softmac_device {
- /* 802.11 structure for data stuff */
- struct ieee80211_device *ieee;
- struct net_device *dev;
-
- /* only valid if associated, then holds the Association ID */
- u16 association_id;
-
- /* the following methods are callbacks that the driver
- * using this framework has to assign
- */
-
- /* always assign these */
- void (*set_bssid_filter)(struct net_device *dev, const u8 *bssid);
- void (*set_channel)(struct net_device *dev, u8 channel);
-
- /* assign if you need it, informational only */
- void (*link_change)(struct net_device *dev);
-
- /* If the hardware can do scanning, assign _all_ three of these callbacks.
- * When the scan finishes, call ieee80211softmac_scan_finished().
- */
-
- /* when called, start_scan is guaranteed to not be called again
- * until you call ieee80211softmac_scan_finished.
- * Return 0 if scanning could start, error otherwise.
- * SOFTMAC AUTHORS: don't call this, use ieee80211softmac_start_scan */
- int (*start_scan)(struct net_device *dev);
- /* this should block until after ieee80211softmac_scan_finished was called
- * SOFTMAC AUTHORS: don't call this, use ieee80211softmac_wait_for_scan */
- void (*wait_for_scan)(struct net_device *dev);
- /* stop_scan aborts a scan, but is asynchronous.
- * if you want to wait for it too, use wait_for_scan
- * SOFTMAC AUTHORS: don't call this, use ieee80211softmac_stop_scan */
- void (*stop_scan)(struct net_device *dev);
-
- /* we'll need something about beacons here too, for AP or ad-hoc modes */
-
- /* Transmission rates to be used by the driver.
- * The SoftMAC figures out the best possible rates.
- * The driver just needs to read them.
- */
- struct ieee80211softmac_txrates txrates;
-
- /* If the driver needs to do stuff on TX rate changes, assign this
- * callback. See IEEE80211SOFTMAC_TXRATECHG for change flags. */
- void (*txrates_change)(struct net_device *dev,
- u32 changes);
-
- /* If the driver needs to do stuff when BSS properties change, assign
- * this callback. see IEEE80211SOFTMAC_BSSINFOCHG for change flags. */
- void (*bssinfo_change)(struct net_device *dev,
- u32 changes);
-
- /* private stuff follows */
- /* this lock protects this structure */
- spinlock_t lock;
-
- struct workqueue_struct *wq;
-
- u8 running; /* SoftMAC started? */
- u8 scanning;
-
- struct ieee80211softmac_scaninfo *scaninfo;
- struct ieee80211softmac_assoc_info associnfo;
- struct ieee80211softmac_bss_info bssinfo;
-
- struct list_head auth_queue;
- struct list_head events;
-
- struct ieee80211softmac_ratesinfo ratesinfo;
- int txrate_badness;
-
- /* WPA stuff */
- struct ieee80211softmac_wpa wpa;
-
- /* we need to keep a list of network structs we copied */
- struct list_head network_list;
-
- /* This must be the last item so that it points to the data
- * allocated beyond this structure by alloc_ieee80211 */
- u8 priv[0];
-};
-
-extern void ieee80211softmac_scan_finished(struct ieee80211softmac_device *sm);
-
-static inline void * ieee80211softmac_priv(struct net_device *dev)
-{
- return ((struct ieee80211softmac_device *)ieee80211_priv(dev))->priv;
-}
-
-extern struct net_device * alloc_ieee80211softmac(int sizeof_priv);
-extern void free_ieee80211softmac(struct net_device *dev);
-
-/* Call this function if you detect a lost TX fragment.
- * (If the device indicates failure of ACK RX, for example.)
- * It is wise to call this function if you are able to detect lost packets,
- * because it contributes to the TX Rates auto adjustment.
- */
-extern void ieee80211softmac_fragment_lost(struct net_device *dev,
- u16 wireless_sequence_number);
-/* Call this function before _start to tell the softmac what rates
- * the hw supports. The rates parameter is copied, so you can
- * free it right after calling this function.
- * Note that the rates need to be sorted. */
-extern void ieee80211softmac_set_rates(struct net_device *dev, u8 count, u8 *rates);
-
-/* Finds the highest rate which is:
- * 1. Present in ri (optionally a basic rate)
- * 2. Supported by the device
- * 3. Less than or equal to the user-defined rate
- */
-extern u8 ieee80211softmac_highest_supported_rate(struct ieee80211softmac_device *mac,
- struct ieee80211softmac_ratesinfo *ri, int basic_only);
-
-/* Helper function which advises you the rate at which a frame should be
- * transmitted at. */
-static inline u8 ieee80211softmac_suggest_txrate(struct ieee80211softmac_device *mac,
- int is_multicast,
- int is_mgt)
-{
- struct ieee80211softmac_txrates *txrates = &mac->txrates;
-
- if (!mac->associnfo.associated)
- return txrates->mgt_mcast_rate;
-
- /* We are associated, sending unicast frame */
- if (!is_multicast)
- return txrates->default_rate;
-
- /* We are associated, sending multicast frame */
- if (is_mgt)
- return txrates->mgt_mcast_rate;
- else
- return txrates->mcast_rate;
-}
-
-/* Helper function which advises you when it is safe to transmit with short
- * preamble.
- * You should only call this function when transmitting at CCK rates. */
-static inline int ieee80211softmac_short_preamble_ok(struct ieee80211softmac_device *mac,
- int is_multicast,
- int is_mgt)
-{
- return (is_multicast && is_mgt) ? 0 : mac->bssinfo.short_preamble;
-}
-
-/* Helper function which advises you whether protection (e.g. self-CTS) is
- * needed. 1 = protection needed, 0 = no protection needed
- * Only use this function when transmitting with OFDM modulation. */
-static inline int ieee80211softmac_protection_needed(struct ieee80211softmac_device *mac)
-{
- return mac->bssinfo.use_protection;
-}
-
-/* Start the SoftMAC. Call this after you initialized the device
- * and it is ready to run.
- */
-extern void ieee80211softmac_start(struct net_device *dev);
-/* Stop the SoftMAC. Call this before you shutdown the device. */
-extern void ieee80211softmac_stop(struct net_device *dev);
-
-/*
- * Event system
- */
-
-/* valid event types */
-#define IEEE80211SOFTMAC_EVENT_ANY -1 /*private use only*/
-#define IEEE80211SOFTMAC_EVENT_SCAN_FINISHED 0
-#define IEEE80211SOFTMAC_EVENT_ASSOCIATED 1
-#define IEEE80211SOFTMAC_EVENT_ASSOCIATE_FAILED 2
-#define IEEE80211SOFTMAC_EVENT_ASSOCIATE_TIMEOUT 3
-#define IEEE80211SOFTMAC_EVENT_AUTHENTICATED 4
-#define IEEE80211SOFTMAC_EVENT_AUTH_FAILED 5
-#define IEEE80211SOFTMAC_EVENT_AUTH_TIMEOUT 6
-#define IEEE80211SOFTMAC_EVENT_ASSOCIATE_NET_NOT_FOUND 7
-#define IEEE80211SOFTMAC_EVENT_DISASSOCIATED 8
-/* keep this updated! */
-#define IEEE80211SOFTMAC_EVENT_LAST 8
-/*
- * If you want to be notified of certain events, you can call
- * ieee80211softmac_notify[_atomic] with
- * - event set to one of the constants below
- * - fun set to a function pointer of the appropriate type
- * - context set to the context data you want passed
- * The return value is 0, or an error.
- */
-typedef void (*notify_function_ptr)(struct net_device *dev, int event_type, void *context);
-
-#define ieee80211softmac_notify(dev, event, fun, context) ieee80211softmac_notify_gfp(dev, event, fun, context, GFP_KERNEL);
-#define ieee80211softmac_notify_atomic(dev, event, fun, context) ieee80211softmac_notify_gfp(dev, event, fun, context, GFP_ATOMIC);
-
-extern int ieee80211softmac_notify_gfp(struct net_device *dev,
- int event, notify_function_ptr fun, void *context, gfp_t gfp_mask);
-
-/* To clear pending work (for ifconfig down, etc.) */
-extern void
-ieee80211softmac_clear_pending_work(struct ieee80211softmac_device *sm);
-
-#endif /* IEEE80211SOFTMAC_H_ */
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