4 #include "hostap_80211.h"
6 /* AP data structures for STAs */
8 /* maximum number of frames to buffer per STA */
9 #define STA_MAX_TX_BUFFER 32
12 #define WLAN_STA_AUTH BIT(0)
13 #define WLAN_STA_ASSOC BIT(1)
14 #define WLAN_STA_PS BIT(2)
15 #define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
16 #define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
17 #define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
18 * controlling whether STA is authorized to
19 * send and receive non-IEEE 802.1X frames
21 #define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */
23 #define WLAN_RATE_1M BIT(0)
24 #define WLAN_RATE_2M BIT(1)
25 #define WLAN_RATE_5M5 BIT(2)
26 #define WLAN_RATE_11M BIT(3)
27 #define WLAN_RATE_COUNT 4
29 /* Maximum size of Supported Rates info element. IEEE 802.11 has a limit of 8,
30 * but some pre-standard IEEE 802.11g products use longer elements. */
31 #define WLAN_SUPP_RATES_MAX 32
33 /* Try to increase TX rate after # successfully sent consecutive packets */
34 #define WLAN_RATE_UPDATE_COUNT 50
36 /* Decrease TX rate after # consecutive dropped packets */
37 #define WLAN_RATE_DECREASE_THRESHOLD 2
40 struct list_head list;
41 struct sta_info *hnext; /* next entry in hash table list */
42 atomic_t users; /* number of users (do not remove if > 0) */
43 struct proc_dir_entry *proc;
46 u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
49 u16 listen_interval; /* or beacon_int for APs */
50 u8 supported_rates[WLAN_SUPP_RATES_MAX];
52 unsigned long last_auth;
53 unsigned long last_assoc;
54 unsigned long last_rx;
55 unsigned long last_tx;
56 unsigned long rx_packets, tx_packets;
57 unsigned long rx_bytes, tx_bytes;
58 struct sk_buff_head tx_buf;
59 /* FIX: timeout buffers with an expiry time somehow derived from
62 s8 last_rx_silence; /* Noise in dBm */
63 s8 last_rx_signal; /* Signal strength in dBm */
64 u8 last_rx_rate; /* TX rate in 0.1 Mbps */
65 u8 last_rx_updated; /* IWSPY's struct iw_quality::updated */
67 u8 tx_supp_rates; /* bit field of supported TX rates */
68 u8 tx_rate; /* current TX rate (in 0.1 Mbps) */
69 u8 tx_rate_idx; /* current TX rate (WLAN_RATE_*) */
70 u8 tx_max_rate; /* max TX rate (WLAN_RATE_*) */
71 u32 tx_count[WLAN_RATE_COUNT]; /* number of frames sent (per rate) */
72 u32 rx_count[WLAN_RATE_COUNT]; /* number of frames received (per rate)
74 u32 tx_since_last_failure;
75 u32 tx_consecutive_exc;
77 struct lib80211_crypt_data *crypt;
79 int ap; /* whether this station is an AP */
83 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
86 char *challenge; /* shared key authentication
91 unsigned char ssid[MAX_SSID_LEN + 1]; /* AP's ssid */
93 unsigned long last_beacon; /* last RX beacon time */
97 struct timer_list timer;
98 enum { STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH } timeout_next;
99 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
103 #define MAX_STA_COUNT 1024
105 /* Maximum number of AIDs to use for STAs; must be 2007 or lower
106 * (8802.11 limitation) */
107 #define MAX_AID_TABLE_SIZE 128
109 #define STA_HASH_SIZE 256
110 #define STA_HASH(sta) (sta[5])
113 /* Default value for maximum station inactivity. After AP_MAX_INACTIVITY_SEC
114 * has passed since last received frame from the station, a nullfunc data
115 * frame is sent to the station. If this frame is not acknowledged and no other
116 * frames have been received, the station will be disassociated after
117 * AP_DISASSOC_DELAY. Similarly, a the station will be deauthenticated after
118 * AP_DEAUTH_DELAY. AP_TIMEOUT_RESOLUTION is the resolution that is used with
119 * max inactivity timer. */
120 #define AP_MAX_INACTIVITY_SEC (5 * 60)
121 #define AP_DISASSOC_DELAY (HZ)
122 #define AP_DEAUTH_DELAY (HZ)
124 /* ap_policy: whether to accept frames to/from other APs/IBSS */
126 AP_OTHER_AP_SKIP_ALL = 0,
127 AP_OTHER_AP_SAME_SSID = 1,
129 AP_OTHER_AP_EVEN_IBSS = 3
132 #define PRISM2_AUTH_OPEN BIT(0)
133 #define PRISM2_AUTH_SHARED_KEY BIT(1)
136 /* MAC address-based restrictions */
138 struct list_head list;
142 struct mac_restrictions {
143 enum { MAC_POLICY_OPEN = 0, MAC_POLICY_ALLOW, MAC_POLICY_DENY } policy;
144 unsigned int entries;
145 struct list_head mac_list;
150 struct add_sta_proc_data {
152 struct add_sta_proc_data *next;
156 typedef enum { WDS_ADD, WDS_DEL } wds_oper_type;
157 struct wds_oper_data {
160 struct wds_oper_data *next;
165 int initialized; /* whether ap_data has been initialized */
167 int bridge_packets; /* send packet to associated STAs directly to the
168 * wireless media instead of higher layers in the
170 unsigned int bridged_unicast; /* number of unicast frames bridged on
172 unsigned int bridged_multicast; /* number of non-unicast frames
173 * bridged on wireless media */
174 unsigned int tx_drop_nonassoc; /* number of unicast TX packets dropped
175 * because they were to an address that
176 * was not associated */
177 int nullfunc_ack; /* use workaround for nullfunc frame ACKs */
179 spinlock_t sta_table_lock;
180 int num_sta; /* number of entries in sta_list */
181 struct list_head sta_list; /* STA info list head */
182 struct sta_info *sta_hash[STA_HASH_SIZE];
184 struct proc_dir_entry *proc;
186 ap_policy_enum ap_policy;
187 unsigned int max_inactivity;
190 struct mac_restrictions mac_restrictions; /* MAC-based auth */
193 struct work_struct add_sta_proc_queue;
194 struct add_sta_proc_data *add_sta_proc_entries;
196 struct work_struct wds_oper_queue;
197 struct wds_oper_data *wds_oper_entries;
201 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
202 /* pointers to STA info; based on allocated AID or NULL if AID free
203 * AID is in the range 1-2007, so sta_aid[0] corresponders to AID 1
206 struct sta_info *sta_aid[MAX_AID_TABLE_SIZE];
208 u16 tx_callback_auth, tx_callback_assoc, tx_callback_poll;
210 /* WEP operations for generating challenges to be used with shared key
212 struct lib80211_crypto_ops *crypt;
214 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
218 void hostap_rx(struct net_device *dev, struct sk_buff *skb,
219 struct hostap_80211_rx_status *rx_stats);
220 void hostap_init_data(local_info_t *local);
221 void hostap_init_ap_proc(local_info_t *local);
222 void hostap_free_data(struct ap_data *ap);
223 void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver);
226 AP_TX_CONTINUE, AP_TX_DROP, AP_TX_RETRY, AP_TX_BUFFERED,
227 AP_TX_CONTINUE_NOT_AUTHORIZED
229 struct hostap_tx_data {
232 struct lib80211_crypt_data *crypt;
235 ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx);
236 void hostap_handle_sta_release(void *ptr);
237 void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb);
238 int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr);
240 AP_RX_CONTINUE, AP_RX_DROP, AP_RX_EXIT, AP_RX_CONTINUE_NOT_AUTHORIZED
242 ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
244 struct hostap_80211_rx_status *rx_stats,
246 int hostap_handle_sta_crypto(local_info_t *local, struct ieee80211_hdr *hdr,
247 struct lib80211_crypt_data **crypt,
249 int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr);
250 int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr);
251 int hostap_add_sta(struct ap_data *ap, u8 *sta_addr);
252 int hostap_update_rx_stats(struct ap_data *ap, struct ieee80211_hdr *hdr,
253 struct hostap_80211_rx_status *rx_stats);
254 void hostap_update_rates(local_info_t *local);
255 void hostap_add_wds_links(local_info_t *local);
256 void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type);
258 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
259 void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap,
261 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
263 #endif /* HOSTAP_AP_H */