add devicescape 802.11 stack

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2791 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 571 insertions, 0 deletions

diff --git a/openwrt/target/linux/package/ieee80211-dscape/src/ieee80211_i.h b/openwrt/target/linux/package/ieee80211-dscape/src/ieee80211_i.h
new file mode 100644
index 000000000..7127f8d67
--- /dev/null
+++ b/openwrt/target/linux/package/ieee80211-dscape/src/ieee80211_i.h
@@ -0,0 +1,571 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_I_H
+#define IEEE80211_I_H
+
+/* ieee80211.o internal definitions, etc. These are not included into
+ * low-level drivers. */
+
+#ifndef ETH_P_PAE
+#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
+#endif /* ETH_P_PAE */
+
+#define IEEE80211_MAX_SSID_LEN 32
+
+struct ieee80211_local;
+
+#include "ieee80211_key.h"
+#include "sta_info.h"
+
+#define BIT(x) (1 << (x))
+
+#define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
+
+
+/* Maximum number of broadcast/multicast frames to buffer when some of the
+ * associated stations are using power saving. */
+#define AP_MAX_BC_BUFFER 128
+
+/* Maximum number of frames buffered to all STAs, including multicast frames.
+ * Note: increasing this limit increases the potential memory requirement. Each
+ * frame can be up to about 2 kB long. */
+#define TOTAL_MAX_TX_BUFFER 512
+
+
+#define MAC2STR(a) ((a)[0] & 0xff), ((a)[1] & 0xff), ((a)[2] & 0xff), \
+		   ((a)[3] & 0xff), ((a)[4] & 0xff), ((a)[5] & 0xff)
+#define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
+
+#define MULTICAST_ADDR(a) ((a)[0] & 0x01)
+
+
+/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
+ * reception of at least three fragmented frames. This limit can be increased
+ * by changing this define, at the cost of slower frame reassembly and
+ * increased memory use (about 2 kB of RAM per entry). */
+#define IEEE80211_FRAGMENT_MAX 4
+
+struct ieee80211_fragment_entry {
+	unsigned long first_frag_time;
+	unsigned int seq;
+	unsigned int rx_queue;
+	unsigned int last_frag;
+	struct sk_buff *skb;
+	int ccmp; /* Whether fragments were encrypted with CCMP */
+	u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
+};
+
+
+struct ieee80211_sta_bss {
+	struct list_head list;
+	struct ieee80211_sta_bss *hnext;
+	atomic_t users;
+
+	u8 bssid[ETH_ALEN];
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	size_t ssid_len;
+	u16 capability; /* host byte order */
+	int hw_mode;
+	int channel;
+	int freq;
+	int rssi;
+	u8 *wpa_ie;
+	size_t wpa_ie_len;
+	u8 *rsn_ie;
+	size_t rsn_ie_len;
+	u8 *wmm_ie;
+	size_t wmm_ie_len;
+#define IEEE80211_MAX_SUPP_RATES 32
+	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
+	size_t supp_rates_len;
+	int beacon_int;
+	u64 timestamp;
+
+	int probe_resp;
+	unsigned long last_update;
+
+};
+
+
+typedef enum {
+	TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
+} ieee80211_txrx_result;
+
+struct ieee80211_txrx_data {
+	struct sk_buff *skb;
+	struct net_device *dev;
+        struct ieee80211_local *local;
+        struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
+	u16 fc, ethertype;
+	struct ieee80211_key *key;
+	unsigned int fragmented:1; /* whether the MSDU was fragmented */
+	union {
+		struct {
+			struct ieee80211_tx_control *control;
+			int unicast:1;
+			int ps_buffered:1;
+			int short_preamble:1;
+			int probe_last_frag:1;
+			struct ieee80211_rate *rate;
+			/* use this rate (if set) for last fragment; rate can
+			 * be set to lower rate for the first fragments, e.g.,
+			 * when using CTS protection with IEEE 802.11g. */
+			struct ieee80211_rate *last_frag_rate;
+			int last_frag_rateidx;
+			int mgmt_interface;
+
+			/* Extra fragments (in addition to the first fragment
+			 * in skb) */
+			int num_extra_frag;
+			struct sk_buff **extra_frag;
+		} tx;
+		struct {
+			struct ieee80211_rx_status *status;
+			int sent_ps_buffered;
+			int queue;
+		} rx;
+	} u;
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+	int wpa_test;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+};
+
+struct ieee80211_passive_scan {
+        unsigned int in_scan:1; /* this must be cleared before calling
+				 * netif_oper(WAKEUP) */
+        unsigned int our_mode_only:1; /* only scan our physical mode a/b/g/etc
+				       */
+        int interval; /* time in seconds between scans */
+        int time; /* time in microseconds to scan for */
+	int channel; /* channel to be scanned */
+        int tries;
+
+        int mode_idx;
+        int chan_idx;
+
+	int freq;
+        int rx_packets;
+        int rx_beacon;
+	int txrx_count;
+
+        struct timer_list timer;
+
+        struct sk_buff *skb; /* skb to transmit before changing channels,
+			      * maybe null for none */
+        struct ieee80211_tx_control tx_control;
+
+	unsigned int num_scans;
+};
+
+typedef ieee80211_txrx_result (*ieee80211_tx_handler)
+(struct ieee80211_txrx_data *tx);
+
+typedef ieee80211_txrx_result (*ieee80211_rx_handler)
+(struct ieee80211_txrx_data *rx);
+
+struct ieee80211_if_norm {
+	u8 *beacon_head, *beacon_tail;
+	int beacon_head_len, beacon_tail_len;
+
+	/* TODO: sta_aid could be replaced by 2008-bit large bitfield of
+	 * that could be used in TIM element generation. This would also
+	 * make TIM element generation a bit faster. */
+	/* AID mapping to station data. NULL, if AID is free. AID is in the
+	 * range 1..2007 and sta_aid[i] corresponds to AID i+1. */
+	struct sta_info *sta_aid[MAX_AID_TABLE_SIZE];
+	int max_aid; /* largest aid currently in use */
+	atomic_t num_sta_ps; /* number of stations in PS mode */
+	struct sk_buff_head ps_bc_buf;
+	int dtim_period, dtim_count;
+	int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
+	int max_ratectrl_rateidx; /* max TX rateidx for rate control */
+	int num_beacons; /* number of TXed beacon frames for this BSS */
+};
+
+struct ieee80211_if_wds {
+        u8 remote_addr[ETH_ALEN];
+        struct sta_info *sta;
+};
+
+struct ieee80211_if_vlan {
+        u8 id;
+};
+
+struct ieee80211_if_sta {
+	enum {
+		IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
+		IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
+		IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
+	} state;
+	struct timer_list timer;
+	u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	size_t ssid_len;
+	u16 aid;
+	u16 ap_capab, capab;
+	u8 *extra_ie; /* to be added to the end of AssocReq */
+	size_t extra_ie_len;
+
+	/* The last AssocReq/Resp IEs */
+	u8 *assocreq_ies, *assocresp_ies;
+	size_t assocreq_ies_len, assocresp_ies_len;
+
+	int auth_tries, assoc_tries;
+
+	int ssid_set:1;
+	int bssid_set:1;
+	int prev_bssid_set:1;
+	int authenticated:1;
+	int associated:1;
+	int probereq_poll:1;
+	int use_protection:1;
+	int create_ibss:1;
+	int mixed_cell:1;
+	int wmm_enabled:1;
+
+	int key_mgmt;
+	unsigned long last_probe;
+
+#define IEEE80211_AUTH_ALG_OPEN BIT(0)
+#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
+#define IEEE80211_AUTH_ALG_LEAP BIT(2)
+	unsigned int auth_algs; /* bitfield of allowed auth algs */
+	int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
+	int auth_transaction;
+
+	unsigned long ibss_join_req;
+	struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
+	u32 supp_rates_bits;
+
+	int wmm_last_param_set;
+};
+
+
+#define IEEE80211_SUB_IF_TYPE_NORM 0x00000000
+#define IEEE80211_SUB_IF_TYPE_MGMT 0x00000001
+#define IEEE80211_SUB_IF_TYPE_STA  0x00000002
+#define IEEE80211_SUB_IF_TYPE_WDS  0x5A580211
+#define IEEE80211_SUB_IF_TYPE_VLAN 0x00080211
+
+struct ieee80211_sub_if_data {
+        struct list_head list;
+        unsigned int type;
+
+        struct net_device *dev;
+        struct net_device *master;
+        struct ieee80211_local *local;
+
+        struct net_device_stats stats;
+	int drop_unencrypted;
+	int eapol; /* 0 = process EAPOL frames as normal data frames,
+		    * 1 = send EAPOL frames through wlan#ap to hostapd
+		    *     (default) */
+	int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
+			 * port */
+
+#define NUM_DEFAULT_KEYS 4
+        struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
+        struct ieee80211_key *default_key;
+
+	struct ieee80211_if_norm *bss; /* BSS that this device belongs to */
+
+        union {
+		struct ieee80211_if_norm norm;
+                struct ieee80211_if_wds wds;
+                struct ieee80211_if_vlan vlan;
+                struct ieee80211_if_sta sta;
+        } u;
+        int channel_use;
+        int channel_use_raw;
+};
+
+#define IEEE80211_DEV_TO_SUB_IF(dev) ((struct ieee80211_sub_if_data *) \
+                     (((long)dev + sizeof(struct net_device) + 3) & ~3))
+
+
+struct ieee80211_local {
+	struct ieee80211_hw *hw;
+	void *hw_priv;
+	struct net_device *mdev; /* wlan#.11 - "master" 802.11 device */
+        struct net_device *wdev; /* wlan# - default Ethernet (data) devide */
+	struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
+	int open_count;
+	struct ieee80211_conf conf;
+
+	/* Tasklet and skb queue to process calls from IRQ mode. All frames
+	 * added to skb_queue will be processed, but frames in
+	 * skb_queue_unreliable may be dropped if the total length of these
+	 * queues increases over the limit. */
+#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
+	struct tasklet_struct tasklet;
+	struct sk_buff_head skb_queue;
+	struct sk_buff_head skb_queue_unreliable;
+	enum {
+		ieee80211_rx_msg = 1,
+		ieee80211_tx_status_msg = 2
+	} ieee80211_msg_enum;
+
+        spinlock_t generic_lock;
+	/* Station data structures */
+	spinlock_t sta_lock; /* mutex for STA data structures */
+	int num_sta; /* number of stations in sta_list */
+	struct list_head sta_list;
+	struct sta_info *sta_hash[STA_HASH_SIZE];
+	struct timer_list sta_cleanup;
+
+	/* Current rate table. This is a pointer to hw->modes structure. */
+	struct ieee80211_rate *curr_rates;
+	int num_curr_rates;
+
+	void *rate_ctrl_priv;
+	struct rate_control_ops *rate_ctrl;
+
+	int next_mode; /* MODE_IEEE80211*
+			* The mode preference for next channel change. This is
+			* used to select .11g vs. .11b channels (or 4.9 GHz vs.
+			* .11a) when the channel number is not unique. */
+
+	/* Supported and basic rate filters for different modes. These are
+	 * pointers to -1 terminated lists and rates in 100 kbps units. */
+	int *supp_rates[NUM_IEEE80211_MODES];
+	int *basic_rates[NUM_IEEE80211_MODES];
+
+	int rts_threshold;
+	int cts_protect_erp_frames;
+	int fragmentation_threshold;
+	int short_retry_limit; /* dot11ShortRetryLimit */
+	int long_retry_limit; /* dot11LongRetryLimit */
+	int short_preamble; /* use short preamble with IEEE 802.11b */
+
+	u32 wep_iv;
+	int key_tx_rx_threshold; /* number of times any key can be used in TX
+				  * or RX before generating a rekey
+				  * notification; 0 = notification disabled. */
+
+	/* Fragment table for host-based reassembly */
+	struct ieee80211_fragment_entry	fragments[IEEE80211_FRAGMENT_MAX];
+	unsigned int fragment_next;
+
+	int bridge_packets; /* bridge packets between associated stations and
+			     * deliver multicast frames both back to wireless
+			     * media and to the local net stack */
+
+	struct ieee80211_passive_scan scan;
+
+
+	ieee80211_rx_handler *rx_handlers;
+        ieee80211_tx_handler *tx_handlers;
+
+        spinlock_t sub_if_lock; /* mutex for STA data structures */
+        struct list_head sub_if_list;
+	struct net_device **bss_devs; /* pointer to IF_TYPE_NORM devices for
+				       * quick access to BSS data */
+	int bss_dev_count; /* number of used entries in bss_devs; note: the
+			    * total size of bss_devs array is stored in
+			    * conf.bss_count */
+	struct net_device **sta_devs; /* pointer to IF_TYPE_STA devices */
+	int sta_dev_count; /* number of used entries in sta_devs */
+	int sta_scanning;
+	int scan_hw_mode_idx;
+	int scan_channel_idx;
+	enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
+	unsigned long last_scan_completed;
+	struct timer_list scan_timer;
+	int scan_oper_channel;
+	int scan_oper_channel_val;
+	int scan_oper_power_level;
+	int scan_oper_freq;
+	int scan_oper_phymode;
+	int scan_oper_antenna_max;
+	u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
+	size_t scan_ssid_len;
+	int scan_skip_11b;
+	struct list_head sta_bss_list;
+	struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
+	spinlock_t sta_bss_lock;
+#define IEEE80211_SCAN_MATCH_SSID BIT(0)
+#define IEEE80211_SCAN_WPA_ONLY BIT(1)
+#define IEEE80211_SCAN_EXTRA_INFO BIT(2)
+	int scan_flags;
+
+#ifdef CONFIG_HOSTAPD_WPA_TESTING
+	u32 wpa_trigger;
+#endif /* CONFIG_HOSTAPD_WPA_TESTING */
+        /* SNMP counters */
+        /* dot11CountersTable */
+        u32 dot11TransmittedFragmentCount;
+        u32 dot11MulticastTransmittedFrameCount;
+        u32 dot11FailedCount;
+	u32 dot11RetryCount;
+	u32 dot11MultipleRetryCount;
+	u32 dot11FrameDuplicateCount;
+        u32 dot11ReceivedFragmentCount;
+        u32 dot11MulticastReceivedFrameCount;
+        u32 dot11TransmittedFrameCount;
+        u32 dot11WEPUndecryptableCount;
+
+        int tx_led_counter;
+
+	u32 channel_use;
+	u32 channel_use_raw;
+        u32 stat_time;
+        struct timer_list stat_timer;
+
+	u8 bssid[ETH_ALEN]; /* BSSID for STA modes (Adhoc/Managed) */
+        struct timer_list rate_limit_timer;
+        u32 rate_limit;
+        u32 rate_limit_burst;
+        u32 rate_limit_bucket;
+        struct proc_dir_entry *proc, *proc_sta, *proc_iface;
+
+	struct work_struct sta_proc_add;
+
+	enum {
+		STA_ANTENNA_SEL_AUTO = 0,
+		STA_ANTENNA_SEL_SW_CTRL = 1,
+		STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
+	} sta_antenna_sel;
+
+	int rate_ctrl_num_up, rate_ctrl_num_down;
+
+#ifdef CONFIG_IEEE80211_DEBUG_COUNTERS
+	/* TX/RX handler statistics */
+	unsigned int tx_handlers_drop;
+	unsigned int tx_handlers_queued;
+	unsigned int tx_handlers_drop_unencrypted;
+	unsigned int tx_handlers_drop_fragment;
+	unsigned int tx_handlers_drop_wep;
+	unsigned int tx_handlers_drop_rate_limit;
+	unsigned int tx_handlers_drop_not_assoc;
+	unsigned int tx_handlers_drop_unauth_port;
+	unsigned int rx_handlers_drop;
+	unsigned int rx_handlers_queued;
+	unsigned int rx_handlers_drop_nullfunc;
+	unsigned int rx_handlers_drop_defrag;
+	unsigned int rx_handlers_drop_short;
+	unsigned int rx_handlers_drop_passive_scan;
+	unsigned int tx_expand_skb_head;
+	unsigned int tx_expand_skb_head_cloned;
+	unsigned int rx_expand_skb_head;
+	unsigned int rx_expand_skb_head2;
+	unsigned int rx_handlers_fragments;
+	unsigned int tx_status_drop;
+	unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
+	unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
+#define I802_DEBUG_INC(c) (c)++
+#else /* CONFIG_IEEE80211_DEBUG_COUNTERS */
+#define I802_DEBUG_INC(c) do { } while (0)
+#endif /* CONFIG_IEEE80211_DEBUG_COUNTERS */
+
+
+	int default_wep_only; /* only default WEP keys are used with this
+			       * interface; this is used to decide when hwaccel
+			       * can be used with default keys */
+	int total_ps_buffered; /* total number of all buffered unicast and
+				* multicast packets for power saving stations
+				*/
+	int allow_broadcast_always; /* whether to allow TX of broadcast frames
+				     * even when there are no associated STAs
+				     */
+
+	int wifi_wme_noack_test;
+	unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
+
+	unsigned int hw_modes; /* bitfield of allowed hardware modes;
+				* (1 << MODE_*) */
+};
+
+
+/* ieee80211.c */
+int ieee80211_hw_config(struct net_device *dev);
+struct ieee80211_key_conf *
+ieee80211_key_data2conf(struct ieee80211_local *local,
+			struct ieee80211_key *data);
+void ieee80211_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+		       struct ieee80211_rx_status *status, u32 msg_type);
+void ieee80211_prepare_rates(struct net_device *dev);
+void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
+int ieee80211_if_add_wds(struct net_device *dev,
+                         char *name,
+                         struct ieee80211_if_wds *wds, int locked);
+int ieee80211_if_add_vlan(struct net_device *dev, char *name,
+			  struct ieee80211_if_vlan *vlan, int locked);
+int ieee80211_if_add_norm(struct net_device *dev, char *name, u8 *bssid,
+			  int locked);
+
+int ieee80211_if_remove_wds(struct net_device *dev, char *name, int locked);
+int ieee80211_if_remove_vlan(struct net_device *dev, char *name, int locked);
+int ieee80211_if_remove_norm(struct net_device *dev, char *name, int locked);
+int ieee80211_if_flush(struct net_device *dev, int locked);
+int ieee80211_if_update_wds(struct net_device *dev, char *name,
+			    struct ieee80211_if_wds *wds, int locked);
+
+/* ieee80211_ioctl.c */
+int ieee80211_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+/* Set hw encryption from ieee80211 */
+int ieee80211_set_hw_encryption(struct net_device *dev,
+				struct sta_info *sta, u8 addr[ETH_ALEN],
+				struct ieee80211_key *key);
+
+/* ieee80211_scan.c */
+void ieee80211_init_scan(struct net_device *dev);
+void ieee80211_stop_scan(struct net_device *dev);
+
+
+
+/* Least common multiple of the used rates (in 100 kbps). This is used to
+ * calculate rate_inv values for each rate so that only integers are needed. */
+#define CHAN_UTIL_RATE_LCM 95040
+/* 1 usec is 1/8 * (95040/10) = 1188 */
+#define CHAN_UTIL_PER_USEC 1188
+/* Amount of bits to shift the result right to scale the total utilization
+ * to values that will not wrap around 32-bit integers. */
+#define CHAN_UTIL_SHIFT 9
+/* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
+ * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
+ * raw value with about 23 should give utilization in 10th of a percentage
+ * (1/1000). However, utilization is only estimated and not all intervals
+ * between frames etc. are calculated. 18 seems to give numbers that are closer
+ * to the real maximum. */
+#define CHAN_UTIL_PER_10MS 18
+#define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
+#define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
+
+
+
+/* ieee80211.c */
+int ieee80211_if_add_sta(struct net_device *dev, char *name, int locked);
+int ieee80211_if_remove_sta(struct net_device *dev, char *name, int locked);
+/* ieee80211_ioctl.c */
+int ieee80211_set_compression(struct ieee80211_local *local,
+			      struct net_device *dev, struct sta_info *sta);
+/* ieee80211_sta.c */
+void ieee80211_sta_timer(unsigned long ptr);
+void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+			   struct ieee80211_rx_status *rx_status);
+int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
+int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
+int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
+int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
+int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
+void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
+			   struct ieee80211_rx_status *rx_status);
+void ieee80211_rx_bss_list_init(struct net_device *dev);
+void ieee80211_rx_bss_list_deinit(struct net_device *dev);
+int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
+struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
+					 struct sk_buff *skb, u8 *bssid,
+					 u8 *addr);
+int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
+int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
+
+
+#endif /* IEEE80211_I_H */