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ff1d2767 JM |
1 | #ifndef HOSTAP_AP_H |
2 | #define HOSTAP_AP_H | |
3 | ||
4 | /* AP data structures for STAs */ | |
5 | ||
6 | /* maximum number of frames to buffer per STA */ | |
7 | #define STA_MAX_TX_BUFFER 32 | |
8 | ||
ff1d2767 JM |
9 | /* STA flags */ |
10 | #define WLAN_STA_AUTH BIT(0) | |
11 | #define WLAN_STA_ASSOC BIT(1) | |
12 | #define WLAN_STA_PS BIT(2) | |
13 | #define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */ | |
14 | #define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */ | |
15 | #define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is | |
16 | * controlling whether STA is authorized to | |
17 | * send and receive non-IEEE 802.1X frames | |
18 | */ | |
19 | #define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */ | |
20 | ||
21 | #define WLAN_RATE_1M BIT(0) | |
22 | #define WLAN_RATE_2M BIT(1) | |
23 | #define WLAN_RATE_5M5 BIT(2) | |
24 | #define WLAN_RATE_11M BIT(3) | |
25 | #define WLAN_RATE_COUNT 4 | |
26 | ||
27 | /* Maximum size of Supported Rates info element. IEEE 802.11 has a limit of 8, | |
28 | * but some pre-standard IEEE 802.11g products use longer elements. */ | |
29 | #define WLAN_SUPP_RATES_MAX 32 | |
30 | ||
31 | /* Try to increase TX rate after # successfully sent consecutive packets */ | |
32 | #define WLAN_RATE_UPDATE_COUNT 50 | |
33 | ||
34 | /* Decrease TX rate after # consecutive dropped packets */ | |
35 | #define WLAN_RATE_DECREASE_THRESHOLD 2 | |
36 | ||
37 | struct sta_info { | |
38 | struct list_head list; | |
39 | struct sta_info *hnext; /* next entry in hash table list */ | |
40 | atomic_t users; /* number of users (do not remove if > 0) */ | |
41 | struct proc_dir_entry *proc; | |
42 | ||
43 | u8 addr[6]; | |
44 | u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */ | |
45 | u32 flags; | |
46 | u16 capability; | |
47 | u16 listen_interval; /* or beacon_int for APs */ | |
48 | u8 supported_rates[WLAN_SUPP_RATES_MAX]; | |
49 | ||
50 | unsigned long last_auth; | |
51 | unsigned long last_assoc; | |
52 | unsigned long last_rx; | |
53 | unsigned long last_tx; | |
54 | unsigned long rx_packets, tx_packets; | |
55 | unsigned long rx_bytes, tx_bytes; | |
56 | struct sk_buff_head tx_buf; | |
57 | /* FIX: timeout buffers with an expiry time somehow derived from | |
58 | * listen_interval */ | |
59 | ||
60 | s8 last_rx_silence; /* Noise in dBm */ | |
61 | s8 last_rx_signal; /* Signal strength in dBm */ | |
62 | u8 last_rx_rate; /* TX rate in 0.1 Mbps */ | |
63 | u8 last_rx_updated; /* IWSPY's struct iw_quality::updated */ | |
64 | ||
65 | u8 tx_supp_rates; /* bit field of supported TX rates */ | |
66 | u8 tx_rate; /* current TX rate (in 0.1 Mbps) */ | |
67 | u8 tx_rate_idx; /* current TX rate (WLAN_RATE_*) */ | |
68 | u8 tx_max_rate; /* max TX rate (WLAN_RATE_*) */ | |
69 | u32 tx_count[WLAN_RATE_COUNT]; /* number of frames sent (per rate) */ | |
70 | u32 rx_count[WLAN_RATE_COUNT]; /* number of frames received (per rate) | |
71 | */ | |
72 | u32 tx_since_last_failure; | |
73 | u32 tx_consecutive_exc; | |
74 | ||
62fe7e37 | 75 | struct ieee80211_crypt_data *crypt; |
ff1d2767 JM |
76 | |
77 | int ap; /* whether this station is an AP */ | |
78 | ||
79 | local_info_t *local; | |
80 | ||
81 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
82 | union { | |
83 | struct { | |
84 | char *challenge; /* shared key authentication | |
85 | * challenge */ | |
86 | } sta; | |
87 | struct { | |
88 | int ssid_len; | |
89 | unsigned char ssid[MAX_SSID_LEN + 1]; /* AP's ssid */ | |
90 | int channel; | |
91 | unsigned long last_beacon; /* last RX beacon time */ | |
92 | } ap; | |
93 | } u; | |
94 | ||
95 | struct timer_list timer; | |
96 | enum { STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH } timeout_next; | |
97 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
98 | }; | |
99 | ||
100 | ||
101 | #define MAX_STA_COUNT 1024 | |
102 | ||
103 | /* Maximum number of AIDs to use for STAs; must be 2007 or lower | |
104 | * (8802.11 limitation) */ | |
105 | #define MAX_AID_TABLE_SIZE 128 | |
106 | ||
107 | #define STA_HASH_SIZE 256 | |
108 | #define STA_HASH(sta) (sta[5]) | |
109 | ||
110 | ||
111 | /* Default value for maximum station inactivity. After AP_MAX_INACTIVITY_SEC | |
112 | * has passed since last received frame from the station, a nullfunc data | |
113 | * frame is sent to the station. If this frame is not acknowledged and no other | |
114 | * frames have been received, the station will be disassociated after | |
115 | * AP_DISASSOC_DELAY. Similarily, a the station will be deauthenticated after | |
116 | * AP_DEAUTH_DELAY. AP_TIMEOUT_RESOLUTION is the resolution that is used with | |
117 | * max inactivity timer. */ | |
118 | #define AP_MAX_INACTIVITY_SEC (5 * 60) | |
119 | #define AP_DISASSOC_DELAY (HZ) | |
120 | #define AP_DEAUTH_DELAY (HZ) | |
121 | ||
122 | /* ap_policy: whether to accept frames to/from other APs/IBSS */ | |
123 | typedef enum { | |
124 | AP_OTHER_AP_SKIP_ALL = 0, | |
125 | AP_OTHER_AP_SAME_SSID = 1, | |
126 | AP_OTHER_AP_ALL = 2, | |
127 | AP_OTHER_AP_EVEN_IBSS = 3 | |
128 | } ap_policy_enum; | |
129 | ||
130 | #define PRISM2_AUTH_OPEN BIT(0) | |
131 | #define PRISM2_AUTH_SHARED_KEY BIT(1) | |
132 | ||
133 | ||
134 | /* MAC address-based restrictions */ | |
135 | struct mac_entry { | |
136 | struct list_head list; | |
137 | u8 addr[6]; | |
138 | }; | |
139 | ||
140 | struct mac_restrictions { | |
141 | enum { MAC_POLICY_OPEN = 0, MAC_POLICY_ALLOW, MAC_POLICY_DENY } policy; | |
142 | unsigned int entries; | |
143 | struct list_head mac_list; | |
144 | spinlock_t lock; | |
145 | }; | |
146 | ||
147 | ||
148 | struct add_sta_proc_data { | |
149 | u8 addr[ETH_ALEN]; | |
150 | struct add_sta_proc_data *next; | |
151 | }; | |
152 | ||
153 | ||
154 | typedef enum { WDS_ADD, WDS_DEL } wds_oper_type; | |
155 | struct wds_oper_data { | |
156 | wds_oper_type type; | |
157 | u8 addr[ETH_ALEN]; | |
158 | struct wds_oper_data *next; | |
159 | }; | |
160 | ||
161 | ||
162 | struct ap_data { | |
163 | int initialized; /* whether ap_data has been initialized */ | |
164 | local_info_t *local; | |
165 | int bridge_packets; /* send packet to associated STAs directly to the | |
166 | * wireless media instead of higher layers in the | |
167 | * kernel */ | |
168 | unsigned int bridged_unicast; /* number of unicast frames bridged on | |
169 | * wireless media */ | |
170 | unsigned int bridged_multicast; /* number of non-unicast frames | |
171 | * bridged on wireless media */ | |
172 | unsigned int tx_drop_nonassoc; /* number of unicast TX packets dropped | |
173 | * because they were to an address that | |
174 | * was not associated */ | |
175 | int nullfunc_ack; /* use workaround for nullfunc frame ACKs */ | |
176 | ||
177 | spinlock_t sta_table_lock; | |
178 | int num_sta; /* number of entries in sta_list */ | |
179 | struct list_head sta_list; /* STA info list head */ | |
180 | struct sta_info *sta_hash[STA_HASH_SIZE]; | |
181 | ||
182 | struct proc_dir_entry *proc; | |
183 | ||
184 | ap_policy_enum ap_policy; | |
185 | unsigned int max_inactivity; | |
186 | int autom_ap_wds; | |
187 | ||
188 | struct mac_restrictions mac_restrictions; /* MAC-based auth */ | |
189 | int last_tx_rate; | |
190 | ||
191 | struct work_struct add_sta_proc_queue; | |
192 | struct add_sta_proc_data *add_sta_proc_entries; | |
193 | ||
194 | struct work_struct wds_oper_queue; | |
195 | struct wds_oper_data *wds_oper_entries; | |
196 | ||
197 | u16 tx_callback_idx; | |
198 | ||
199 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
200 | /* pointers to STA info; based on allocated AID or NULL if AID free | |
201 | * AID is in the range 1-2007, so sta_aid[0] corresponders to AID 1 | |
202 | * and so on | |
203 | */ | |
204 | struct sta_info *sta_aid[MAX_AID_TABLE_SIZE]; | |
205 | ||
206 | u16 tx_callback_auth, tx_callback_assoc, tx_callback_poll; | |
207 | ||
208 | /* WEP operations for generating challenges to be used with shared key | |
209 | * authentication */ | |
62fe7e37 | 210 | struct ieee80211_crypto_ops *crypt; |
ff1d2767 JM |
211 | void *crypt_priv; |
212 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
213 | }; | |
214 | ||
215 | ||
216 | void hostap_rx(struct net_device *dev, struct sk_buff *skb, | |
217 | struct hostap_80211_rx_status *rx_stats); | |
218 | void hostap_init_data(local_info_t *local); | |
219 | void hostap_init_ap_proc(local_info_t *local); | |
220 | void hostap_free_data(struct ap_data *ap); | |
221 | void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver); | |
222 | ||
223 | typedef enum { | |
224 | AP_TX_CONTINUE, AP_TX_DROP, AP_TX_RETRY, AP_TX_BUFFERED, | |
225 | AP_TX_CONTINUE_NOT_AUTHORIZED | |
226 | } ap_tx_ret; | |
227 | struct hostap_tx_data { | |
228 | struct sk_buff *skb; | |
229 | int host_encrypt; | |
62fe7e37 | 230 | struct ieee80211_crypt_data *crypt; |
ff1d2767 JM |
231 | void *sta_ptr; |
232 | }; | |
233 | ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx); | |
234 | void hostap_handle_sta_release(void *ptr); | |
235 | void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb); | |
d041674d | 236 | int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr_4addr *hdr); |
ff1d2767 JM |
237 | typedef enum { |
238 | AP_RX_CONTINUE, AP_RX_DROP, AP_RX_EXIT, AP_RX_CONTINUE_NOT_AUTHORIZED | |
239 | } ap_rx_ret; | |
240 | ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev, | |
241 | struct sk_buff *skb, | |
242 | struct hostap_80211_rx_status *rx_stats, | |
243 | int wds); | |
d041674d | 244 | int hostap_handle_sta_crypto(local_info_t *local, struct ieee80211_hdr_4addr *hdr, |
62fe7e37 JM |
245 | struct ieee80211_crypt_data **crypt, |
246 | void **sta_ptr); | |
ff1d2767 JM |
247 | int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr); |
248 | int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr); | |
249 | int hostap_add_sta(struct ap_data *ap, u8 *sta_addr); | |
d041674d | 250 | int hostap_update_rx_stats(struct ap_data *ap, struct ieee80211_hdr_4addr *hdr, |
ff1d2767 JM |
251 | struct hostap_80211_rx_status *rx_stats); |
252 | void hostap_update_rates(local_info_t *local); | |
253 | void hostap_add_wds_links(local_info_t *local); | |
254 | void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type); | |
255 | ||
256 | #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT | |
257 | void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap, | |
258 | int resend); | |
259 | #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */ | |
260 | ||
261 | #endif /* HOSTAP_AP_H */ |