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/*
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 2005, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
*
* 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 "ieee80211_key.h"
#include "sta_info.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 WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
struct ieee80211_local;
#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
/* 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
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_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, signal, noise;
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;
/* 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;
};
typedef enum {
TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
} ieee80211_txrx_result;
/* flags used in struct ieee80211_txrx_data.flags */
/* whether the MSDU was fragmented */
#define IEEE80211_TXRXD_FRAGMENTED BIT(0)
#define IEEE80211_TXRXD_TXUNICAST BIT(1)
#define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2)
#define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3)
#define IEEE80211_TXRXD_RXIN_SCAN BIT(4)
/* frame is destined to interface currently processed (incl. multicast frames) */
#define IEEE80211_TXRXD_RXRA_MATCH BIT(5)
#define IEEE80211_TXRXD_TX_INJECTED BIT(6)
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 flags;
union {
struct {
struct ieee80211_tx_control *control;
struct ieee80211_hw_mode *mode;
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_hwrate;
/* 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;
int load;
u32 tkip_iv32;
u16 tkip_iv16;
} rx;
} u;
};
/* flags used in struct ieee80211_tx_packet_data.flags */
#define IEEE80211_TXPD_REQ_TX_STATUS BIT(0)
#define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1)
#define IEEE80211_TXPD_REQUEUE BIT(2)
/* Stored in sk_buff->cb */
struct ieee80211_tx_packet_data {
int ifindex;
unsigned long jiffies;
unsigned int flags;
u8 queue;
};
struct ieee80211_tx_stored_packet {
struct ieee80211_tx_control control;
struct sk_buff *skb;
int num_extra_frag;
struct sk_buff **extra_frag;
int last_frag_rateidx;
int last_frag_hwrate;
struct ieee80211_rate *last_frag_rate;
unsigned int last_frag_rate_ctrl_probe;
};
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_ap {
u8 *beacon_head, *beacon_tail;
int beacon_head_len, beacon_tail_len;
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 ever use set_bit, use bss_tim_set/bss_tim_clear! */
u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
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 {
struct ieee80211_sub_if_data *ap;
struct list_head list;
};
/* 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)
struct ieee80211_if_sta {
enum {
IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
} state;
struct timer_list timer;
struct work_struct work;
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;
unsigned int flags;
#define IEEE80211_STA_REQ_SCAN 0
#define IEEE80211_STA_REQ_AUTH 1
#define IEEE80211_STA_REQ_RUN 2
unsigned long<
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