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linux/net/mac80211/ieee80211_i.h
Johannes Berg 09914813da mac80211: fix HT information element parsing 
There's no checking that the HT IEs are of the right length
which can be used by an attacker to cause an out-of-bounds
access by sending a too short HT information/capability IE.
Fix it by simply pretending those IEs didn't exist when too
short.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-10-14 20:47:15 -04:00

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/*
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 2005, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net>
*
* 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
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/if_ether.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/etherdevice.h>
#include <net/wireless.h>
#include <net/iw_handler.h>
#include <net/mac80211.h>
#include "key.h"
#include "sta_info.h"
struct ieee80211_local;
/* 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
/* Required encryption head and tailroom */
#define IEEE80211_ENCRYPT_HEADROOM 8
#define IEEE80211_ENCRYPT_TAILROOM 12
/* 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
/*
* Time after which we ignore scan results and no longer report/use
* them in any way.
*/
#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
struct ieee80211_fragment_entry {
unsigned long first_frag_time;
unsigned int seq;
unsigned int rx_queue;
unsigned int last_frag;
unsigned int extra_len;
struct sk_buff_head skb_list;
int ccmp; /* Whether fragments were encrypted with CCMP */
u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
};
struct ieee80211_bss {
struct list_head list;
struct ieee80211_bss *hnext;
size_t ssid_len;
atomic_t users;
u8 bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 dtim_period;
u16 capability; /* host byte order */
enum ieee80211_band band;
int freq;
int signal, noise, qual;
u8 *ies; /* all information elements from the last Beacon or Probe
* Response frames; note Beacon frame is not allowed to
* override values from Probe Response */
size_t ies_len;
bool wmm_used;
#ifdef CONFIG_MAC80211_MESH
u8 *mesh_id;
size_t mesh_id_len;
u8 *mesh_cfg;
#endif
#define IEEE80211_MAX_SUPP_RATES 32
u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
size_t supp_rates_len;
u64 timestamp;
int beacon_int;
unsigned long last_probe_resp;
unsigned long last_update;
/* during assocation, we save an ERP value from a probe response so
* that we can feed ERP info to the driver when handling the
* association completes. these fields probably won't be up-to-date
* otherwise, you probably don't want to use them. */
int has_erp_value;
u8 erp_value;
};
static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_cfg;
#endif
return NULL;
}
static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_id;
#endif
return NULL;
}
static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_id_len;
#endif
return 0;
}
typedef unsigned __bitwise__ ieee80211_tx_result;
#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
#define TX_DROP ((__force ieee80211_tx_result) 1u)
#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
#define IEEE80211_TX_FRAGMENTED BIT(0)
#define IEEE80211_TX_UNICAST BIT(1)
#define IEEE80211_TX_PS_BUFFERED BIT(2)
#define IEEE80211_TX_PROBE_LAST_FRAG BIT(3)
struct ieee80211_tx_data {
struct sk_buff *skb;
struct net_device *dev;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
struct ieee80211_key *key;
struct ieee80211_channel *channel;
s8 rate_idx;
/* 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. */
s8 last_frag_rate_idx;
/* Extra fragments (in addition to the first fragment
* in skb) */
struct sk_buff **extra_frag;
int num_extra_frag;
u16 ethertype;
unsigned int flags;
};
typedef unsigned __bitwise__ ieee80211_rx_result;
#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
#define IEEE80211_RX_IN_SCAN BIT(0)
/* frame is destined to interface currently processed (incl. multicast frames) */
#define IEEE80211_RX_RA_MATCH BIT(1)
#define IEEE80211_RX_AMSDU BIT(2)
#define IEEE80211_RX_CMNTR_REPORTED BIT(3)
#define IEEE80211_RX_FRAGMENTED BIT(4)
struct ieee80211_rx_data {
struct sk_buff *skb;
struct net_device *dev;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
struct ieee80211_key *key;
struct ieee80211_rx_status *status;
struct ieee80211_rate *rate;
u16 ethertype;
unsigned int flags;
int sent_ps_buffered;
int queue;
u32 tkip_iv32;
u16 tkip_iv16;
};
struct ieee80211_tx_stored_packet {
struct sk_buff *skb;
struct sk_buff **extra_frag;
s8 last_frag_rate_idx;
int num_extra_frag;
bool last_frag_rate_ctrl_probe;
};
struct beacon_data {
u8 *head, *tail;
int head_len, tail_len;
int dtim_period;
};
struct ieee80211_if_ap {
struct beacon_data *beacon;
struct list_head vlans;
u8 ssid[IEEE80211_MAX_SSID_LEN];
size_t ssid_len;
/* yes, this looks ugly, but guarantees that we can later use
* bitmap_empty :)
* NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
struct sk_buff_head ps_bc_buf;
atomic_t num_sta_ps; /* number of stations in PS mode */
int dtim_count;
};
struct ieee80211_if_wds {
struct sta_info *sta;
u8 remote_addr[ETH_ALEN];
};
struct ieee80211_if_vlan {
struct list_head list;
};
struct mesh_stats {
__u32 fwded_frames; /* Mesh forwarded frames */
__u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
__u32 dropped_frames_no_route; /* Not transmitted, no route found */
atomic_t estab_plinks;
};
#define PREQ_Q_F_START 0x1
#define PREQ_Q_F_REFRESH 0x2
struct mesh_preq_queue {
struct list_head list;
u8 dst[ETH_ALEN];
u8 flags;
};
struct mesh_config {
/* Timeouts in ms */
/* Mesh plink management parameters */
u16 dot11MeshRetryTimeout;
u16 dot11MeshConfirmTimeout;
u16 dot11MeshHoldingTimeout;
u16 dot11MeshMaxPeerLinks;
u8 dot11MeshMaxRetries;
u8 dot11MeshTTL;
bool auto_open_plinks;
/* HWMP parameters */
u8 dot11MeshHWMPmaxPREQretries;
u32 path_refresh_time;
u16 min_discovery_timeout;
u32 dot11MeshHWMPactivePathTimeout;
u16 dot11MeshHWMPpreqMinInterval;
u16 dot11MeshHWMPnetDiameterTraversalTime;
};
/* flags used in struct ieee80211_if_sta.flags */
#define IEEE80211_STA_SSID_SET BIT(0)
#define IEEE80211_STA_BSSID_SET BIT(1)
#define IEEE80211_STA_PREV_BSSID_SET BIT(2)
#define IEEE80211_STA_AUTHENTICATED BIT(3)
#define IEEE80211_STA_ASSOCIATED BIT(4)
#define IEEE80211_STA_PROBEREQ_POLL BIT(5)
#define IEEE80211_STA_CREATE_IBSS BIT(6)
#define IEEE80211_STA_MIXED_CELL BIT(7)
#define IEEE80211_STA_WMM_ENABLED BIT(8)
#define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
#define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
#define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
#define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
/* flags for MLME request */
#define IEEE80211_STA_REQ_SCAN 0
#define IEEE80211_STA_REQ_DIRECT_PROBE 1
#define IEEE80211_STA_REQ_AUTH 2
#define IEEE80211_STA_REQ_RUN 3
/* STA/IBSS MLME states */
enum ieee80211_sta_mlme_state {
IEEE80211_STA_MLME_DISABLED,
IEEE80211_STA_MLME_DIRECT_PROBE,
IEEE80211_STA_MLME_AUTHENTICATE,
IEEE80211_STA_MLME_ASSOCIATE,
IEEE80211_STA_MLME_ASSOCIATED,
IEEE80211_STA_MLME_IBSS_SEARCH,
IEEE80211_STA_MLME_IBSS_JOINED,
};
/* bitfield of allowed auth algs */
#define IEEE80211_AUTH_ALG_OPEN BIT(0)
#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
#define IEEE80211_AUTH_ALG_LEAP BIT(2)
struct ieee80211_if_sta {
struct timer_list timer;
struct work_struct work;
u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
enum ieee80211_sta_mlme_state state;
size_t ssid_len;
u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
size_t scan_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;
struct sk_buff_head skb_queue;
int assoc_scan_tries; /* number of scans done pre-association */
int direct_probe_tries; /* retries for direct probes */
int auth_tries; /* retries for auth req */
int assoc_tries; /* retries for assoc req */
unsigned long request;
unsigned long last_probe;
unsigned int flags;
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[IEEE80211_NUM_BANDS];
int wmm_last_param_set;
};
struct ieee80211_if_mesh {
struct work_struct work;
struct timer_list housekeeping_timer;
struct timer_list mesh_path_timer;
struct sk_buff_head skb_queue;
bool housekeeping;
u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
size_t mesh_id_len;
/* Active Path Selection Protocol Identifier */
u8 mesh_pp_id[4];
/* Active Path Selection Metric Identifier */
u8 mesh_pm_id[4];
/* Congestion Control Mode Identifier */
u8 mesh_cc_id[4];
/* Local mesh Destination Sequence Number */
u32 dsn;
/* Last used PREQ ID */
u32 preq_id;
atomic_t mpaths;
/* Timestamp of last DSN update */
unsigned long last_dsn_update;
/* Timestamp of last DSN sent */
unsigned long last_preq;
struct mesh_rmc *rmc;
spinlock_t mesh_preq_queue_lock;
struct mesh_preq_queue preq_queue;
int preq_queue_len;
struct mesh_stats mshstats;
struct mesh_config mshcfg;
u32 mesh_seqnum;
bool accepting_plinks;
};
#ifdef CONFIG_MAC80211_MESH
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
do { (msh)->mshstats.name++; } while (0)
#else
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
do { } while (0)
#endif
/**
* enum ieee80211_sub_if_data_flags - virtual interface flags
*
* @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
* @IEEE80211_SDATA_PROMISC: interface is promisc
* @IEEE80211_SDATA_USERSPACE_MLME: userspace MLME is active
* @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
* @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
* associated stations and deliver multicast frames both
* back to wireless media and to the local net stack.
*/
enum ieee80211_sub_if_data_flags {
IEEE80211_SDATA_ALLMULTI = BIT(0),
IEEE80211_SDATA_PROMISC = BIT(1),
IEEE80211_SDATA_USERSPACE_MLME = BIT(2),
IEEE80211_SDATA_OPERATING_GMODE = BIT(3),
IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(4),
};
struct ieee80211_sub_if_data {
struct list_head list;
struct wireless_dev wdev;
/* keys */
struct list_head key_list;
struct net_device *dev;
struct ieee80211_local *local;
unsigned int flags;
int drop_unencrypted;
/* Fragment table for host-based reassembly */
struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
unsigned int fragment_next;
#define NUM_DEFAULT_KEYS 4
struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
struct ieee80211_key *default_key;
/* BSS configuration for this interface. */
struct ieee80211_bss_conf bss_conf;
/*
* AP this belongs to: self in AP mode and
* corresponding AP in VLAN mode, NULL for
* all others (might be needed later in IBSS)
*/
struct ieee80211_if_ap *bss;
int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
int max_ratectrl_rateidx; /* max TX rateidx for rate control */
union {
struct ieee80211_if_ap ap;
struct ieee80211_if_wds wds;
struct ieee80211_if_vlan vlan;
struct ieee80211_if_sta sta;
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_if_mesh mesh;
#endif
u32 mntr_flags;
} u;
#ifdef CONFIG_MAC80211_DEBUGFS
struct dentry *debugfsdir;
union {
struct {
struct dentry *drop_unencrypted;
struct dentry *state;
struct dentry *bssid;
struct dentry *prev_bssid;
struct dentry *ssid_len;
struct dentry *aid;
struct dentry *ap_capab;
struct dentry *capab;
struct dentry *extra_ie_len;
struct dentry *auth_tries;
struct dentry *assoc_tries;
struct dentry *auth_algs;
struct dentry *auth_alg;
struct dentry *auth_transaction;
struct dentry *flags;
struct dentry *force_unicast_rateidx;
struct dentry *max_ratectrl_rateidx;
} sta;
struct {
struct dentry *drop_unencrypted;
struct dentry *num_sta_ps;
struct dentry *dtim_count;
struct dentry *force_unicast_rateidx;
struct dentry *max_ratectrl_rateidx;
struct dentry *num_buffered_multicast;
} ap;
struct {
struct dentry *drop_unencrypted;
struct dentry *peer;
struct dentry *force_unicast_rateidx;
struct dentry *max_ratectrl_rateidx;
} wds;
struct {
struct dentry *drop_unencrypted;
struct dentry *force_unicast_rateidx;
struct dentry *max_ratectrl_rateidx;
} vlan;
struct {
struct dentry *mode;
} monitor;
} debugfs;
struct {
struct dentry *default_key;
} common_debugfs;
#ifdef CONFIG_MAC80211_MESH
struct dentry *mesh_stats_dir;
struct {
struct dentry *fwded_frames;
struct dentry *dropped_frames_ttl;
struct dentry *dropped_frames_no_route;
struct dentry *estab_plinks;
struct timer_list mesh_path_timer;
} mesh_stats;
struct dentry *mesh_config_dir;
struct {
struct dentry *dot11MeshRetryTimeout;
struct dentry *dot11MeshConfirmTimeout;
struct dentry *dot11MeshHoldingTimeout;
struct dentry *dot11MeshMaxRetries;
struct dentry *dot11MeshTTL;
struct dentry *auto_open_plinks;
struct dentry *dot11MeshMaxPeerLinks;
struct dentry *dot11MeshHWMPactivePathTimeout;
struct dentry *dot11MeshHWMPpreqMinInterval;
struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
struct dentry *dot11MeshHWMPmaxPREQretries;
struct dentry *path_refresh_time;
struct dentry *min_discovery_timeout;
} mesh_config;
#endif
#endif
/* must be last, dynamically sized area in this! */
struct ieee80211_vif vif;
};
static inline
struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
{
return container_of(p, struct ieee80211_sub_if_data, vif);
}
static inline void
ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
u8 mesh_id_len, u8 *mesh_id)
{
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
ifmsh->mesh_id_len = mesh_id_len;
memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
#else
WARN_ON(1);
#endif
}
enum {
IEEE80211_RX_MSG = 1,
IEEE80211_TX_STATUS_MSG = 2,
IEEE80211_DELBA_MSG = 3,
IEEE80211_ADDBA_MSG = 4,
};
/* maximum number of hardware queues we support. */
#define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES)
struct ieee80211_master_priv {
struct ieee80211_local *local;
};
struct ieee80211_local {
/* embed the driver visible part.
* don't cast (use the static inlines below), but we keep
* it first anyway so they become a no-op */
struct ieee80211_hw hw;
const struct ieee80211_ops *ops;
unsigned long queue_pool[BITS_TO_LONGS(QD_MAX_QUEUES)];
struct net_device *mdev; /* wmaster# - "master" 802.11 device */
int open_count;
int monitors, cooked_mntrs;
/* number of interfaces with corresponding FIF_ flags */
int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
unsigned int filter_flags; /* FIF_* */
struct iw_statistics wstats;
u8 wstats_flags;
bool tim_in_locked_section; /* see ieee80211_beacon_get() */
int tx_headroom; /* required headroom for hardware/radiotap */
/* 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;
/* Station data */
/*
* The lock only protects the list, hash, timer and counter
* against manipulation, reads are done in RCU. Additionally,
* the lock protects each BSS's TIM bitmap.
*/
spinlock_t sta_lock;
unsigned long num_sta;
struct list_head sta_list;
struct list_head sta_flush_list;
struct work_struct sta_flush_work;
struct sta_info *sta_hash[STA_HASH_SIZE];
struct timer_list sta_cleanup;
unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
unsigned long queues_pending_run[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
struct tasklet_struct tx_pending_tasklet;
/* number of interfaces with corresponding IFF_ flags */
atomic_t iff_allmultis, iff_promiscs;
struct rate_control_ref *rate_ctrl;
int rts_threshold;
int fragmentation_threshold;
int short_retry_limit; /* dot11ShortRetryLimit */
int long_retry_limit; /* dot11LongRetryLimit */
struct crypto_blkcipher *wep_tx_tfm;
struct crypto_blkcipher *wep_rx_tfm;
u32 wep_iv;
struct list_head interfaces;
/*
* Key lock, protects sdata's key_list and sta_info's
* key pointers (write access, they're RCU.)
*/
spinlock_t key_lock;
/* Scanning and BSS list */
bool sw_scanning, hw_scanning;
int scan_channel_idx;
enum ieee80211_band scan_band;
enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
unsigned long last_scan_completed;
struct delayed_work scan_work;
struct ieee80211_sub_if_data *scan_sdata;
struct ieee80211_channel *oper_channel, *scan_channel;
u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
size_t scan_ssid_len;
struct list_head bss_list;
struct ieee80211_bss *bss_hash[STA_HASH_SIZE];
spinlock_t bss_lock;
/* SNMP counters */
/* dot11CountersTable */
u32 dot11TransmittedFragmentCount;
u32 dot11MulticastTransmittedFrameCount;
u32 dot11FailedCount;
u32 dot11RetryCount;
u32 dot11MultipleRetryCount;
u32 dot11FrameDuplicateCount;
u32 dot11ReceivedFragmentCount;
u32 dot11MulticastReceivedFrameCount;
u32 dot11TransmittedFrameCount;
u32 dot11WEPUndecryptableCount;
#ifdef CONFIG_MAC80211_LEDS
int tx_led_counter, rx_led_counter;
struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
char tx_led_name[32], rx_led_name[32],
assoc_led_name[32], radio_led_name[32];
#endif
#ifdef CONFIG_MAC80211_DEBUGFS
struct work_struct sta_debugfs_add;
#endif
#ifdef CONFIG_MAC80211_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_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;
#define I802_DEBUG_INC(c) (c)++
#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
#define I802_DEBUG_INC(c) do { } while (0)
#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
int total_ps_buffered; /* total number of all buffered unicast and
* multicast packets for power saving stations
*/
int wifi_wme_noack_test;
unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
#ifdef CONFIG_MAC80211_DEBUGFS
struct local_debugfsdentries {
struct dentry *rcdir;
struct dentry *rcname;
struct dentry *frequency;
struct dentry *antenna_sel_tx;
struct dentry *antenna_sel_rx;
struct dentry *rts_threshold;
struct dentry *fragmentation_threshold;
struct dentry *short_retry_limit;
struct dentry *long_retry_limit;
struct dentry *total_ps_buffered;
struct dentry *wep_iv;
struct dentry *statistics;
struct local_debugfsdentries_statsdentries {
struct dentry *transmitted_fragment_count;
struct dentry *multicast_transmitted_frame_count;
struct dentry *failed_count;
struct dentry *retry_count;
struct dentry *multiple_retry_count;
struct dentry *frame_duplicate_count;
struct dentry *received_fragment_count;
struct dentry *multicast_received_frame_count;
struct dentry *transmitted_frame_count;
struct dentry *wep_undecryptable_count;
struct dentry *num_scans;
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
struct dentry *tx_handlers_drop;
struct dentry *tx_handlers_queued;
struct dentry *tx_handlers_drop_unencrypted;
struct dentry *tx_handlers_drop_fragment;
struct dentry *tx_handlers_drop_wep;
struct dentry *tx_handlers_drop_not_assoc;
struct dentry *tx_handlers_drop_unauth_port;
struct dentry *rx_handlers_drop;
struct dentry *rx_handlers_queued;
struct dentry *rx_handlers_drop_nullfunc;
struct dentry *rx_handlers_drop_defrag;
struct dentry *rx_handlers_drop_short;
struct dentry *rx_handlers_drop_passive_scan;
struct dentry *tx_expand_skb_head;
struct dentry *tx_expand_skb_head_cloned;
struct dentry *rx_expand_skb_head;
struct dentry *rx_expand_skb_head2;
struct dentry *rx_handlers_fragments;
struct dentry *tx_status_drop;
#endif
struct dentry *dot11ACKFailureCount;
struct dentry *dot11RTSFailureCount;
struct dentry *dot11FCSErrorCount;
struct dentry *dot11RTSSuccessCount;
} stats;
struct dentry *stations;
struct dentry *keys;
} debugfs;
#endif
};
static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
BUG_ON(!local || local->mdev == dev);
return netdev_priv(dev);
}
/* this struct represents 802.11n's RA/TID combination */
struct ieee80211_ra_tid {
u8 ra[ETH_ALEN];
u16 tid;
};
/* Parsed Information Elements */
struct ieee802_11_elems {
u8 *ie_start;
size_t total_len;
/* pointers to IEs */
u8 *ssid;
u8 *supp_rates;
u8 *fh_params;
u8 *ds_params;
u8 *cf_params;
u8 *tim;
u8 *ibss_params;
u8 *challenge;
u8 *wpa;
u8 *rsn;
u8 *erp_info;
u8 *ext_supp_rates;
u8 *wmm_info;
u8 *wmm_param;
struct ieee80211_ht_cap *ht_cap_elem;
struct ieee80211_ht_addt_info *ht_info_elem;
u8 *mesh_config;
u8 *mesh_id;
u8 *peer_link;
u8 *preq;
u8 *prep;
u8 *perr;
u8 *ch_switch_elem;
u8 *country_elem;
u8 *pwr_constr_elem;
u8 *quiet_elem; /* first quite element */
/* length of them, respectively */
u8 ssid_len;
u8 supp_rates_len;
u8 fh_params_len;
u8 ds_params_len;
u8 cf_params_len;
u8 tim_len;
u8 ibss_params_len;
u8 challenge_len;
u8 wpa_len;
u8 rsn_len;
u8 erp_info_len;
u8 ext_supp_rates_len;
u8 wmm_info_len;
u8 wmm_param_len;
u8 mesh_config_len;
u8 mesh_id_len;
u8 peer_link_len;
u8 preq_len;
u8 prep_len;
u8 perr_len;
u8 ch_switch_elem_len;
u8 country_elem_len;
u8 pwr_constr_elem_len;
u8 quiet_elem_len;
u8 num_of_quiet_elem; /* can be more the one */
};
static inline struct ieee80211_local *hw_to_local(
struct ieee80211_hw *hw)
{
return container_of(hw, struct ieee80211_local, hw);
}
static inline struct ieee80211_hw *local_to_hw(
struct ieee80211_local *local)
{
return &local->hw;
}
struct sta_attribute {
struct attribute attr;
ssize_t (*show)(const struct sta_info *, char *buf);
ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
};
static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
{
return compare_ether_addr(raddr, addr) == 0 ||
is_broadcast_ether_addr(raddr);
}
int ieee80211_hw_config(struct ieee80211_local *local);
int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
struct ieee80211_ht_info *req_ht_cap,
struct ieee80211_ht_bss_info *req_bss_cap);
void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
u32 changed);
void ieee80211_configure_filter(struct ieee80211_local *local);
/* wireless extensions */
extern const struct iw_handler_def ieee80211_iw_handler_def;
/* STA/IBSS code */
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
void ieee80211_scan_work(struct work_struct *work);
void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status);
int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u8 *bssid,
u8 *addr, u64 supp_rates);
int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
struct ieee802_11_elems *elems,
enum ieee80211_band band);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len);
/* scan/BSS handling */
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
u8 *ssid, size_t ssid_len);
int ieee80211_scan_results(struct ieee80211_local *local,
struct iw_request_info *info,
char *buf, size_t len);
ieee80211_rx_result
ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb,
struct ieee80211_rx_status *rx_status);
void ieee80211_rx_bss_list_init(struct ieee80211_local *local);
void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local);
int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
char *ie, size_t len);
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
u8 *ssid, size_t ssid_len);
struct ieee80211_bss *
ieee80211_bss_info_update(struct ieee80211_local *local,
struct ieee80211_rx_status *rx_status,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee802_11_elems *elems,
int freq, bool beacon);
struct ieee80211_bss *
ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len);
struct ieee80211_bss *
ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len);
void ieee80211_rx_bss_put(struct ieee80211_local *local,
struct ieee80211_bss *bss);
/* interface handling */
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
struct net_device **new_dev, enum nl80211_iftype type,
struct vif_params *params);
int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
enum nl80211_iftype type);
void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
void ieee80211_remove_interfaces(struct ieee80211_local *local);
/* tx handling */
void ieee80211_clear_tx_pending(struct ieee80211_local *local);
void ieee80211_tx_pending(unsigned long data);
int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
/* HT */
int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
struct ieee80211_ht_info *ht_info);
int ieee80211_ht_addt_info_ie_to_ht_bss_info(
struct ieee80211_ht_addt_info *ht_add_info_ie,
struct ieee80211_ht_bss_info *bss_info);
void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
u16 tid, u16 initiator, u16 reason);
void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr);
void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta,
struct ieee80211_mgmt *mgmt, size_t len);
void ieee80211_process_addba_resp(struct ieee80211_local *local,
struct sta_info *sta,
struct ieee80211_mgmt *mgmt,
size_t len);
void ieee80211_process_addba_request(struct ieee80211_local *local,
struct sta_info *sta,
struct ieee80211_mgmt *mgmt,
size_t len);
/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len);
/* utility functions/constants */
extern void *mac80211_wiphy_privid; /* for wiphy privid */
extern const unsigned char rfc1042_header[6];
extern const unsigned char bridge_tunnel_header[6];
u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
enum nl80211_iftype type);
int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
int rate, int erp, int short_preamble);
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
struct ieee80211_hdr *hdr);
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
int encrypt);
void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems);
int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
u64 ieee80211_mandatory_rates(struct ieee80211_local *local,
enum ieee80211_band band);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline
#else
#define debug_noinline
#endif
#endif /* IEEE80211_I_H */
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