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1#ifndef HOSTAP_AP_H
2#define HOSTAP_AP_H
3
4#include "hostap_80211.h"
5
6/* AP data structures for STAs */
7
8/* maximum number of frames to buffer per STA */
9#define STA_MAX_TX_BUFFER 32
10
11/* STA flags */
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
20 */
21#define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */
22
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
28
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
32
33/* Try to increase TX rate after # successfully sent consecutive packets */
34#define WLAN_RATE_UPDATE_COUNT 50
35
36/* Decrease TX rate after # consecutive dropped packets */
37#define WLAN_RATE_DECREASE_THRESHOLD 2
38
39struct sta_info {
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;
44
45 u8 addr[6];
46 u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
47 u32 flags;
48 u16 capability;
49 u16 listen_interval; /* or beacon_int for APs */
50 u8 supported_rates[WLAN_SUPP_RATES_MAX];
51
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
60 * listen_interval */
61
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 */
66
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)
73 */
74 u32 tx_since_last_failure;
75 u32 tx_consecutive_exc;
76
77 struct lib80211_crypt_data *crypt;
78
79 int ap; /* whether this station is an AP */
80
81 local_info_t *local;
82
83#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
84 union {
85 struct {
86 char *challenge; /* shared key authentication
87 * challenge */
88 } sta;
89 struct {
90 int ssid_len;
91 unsigned char ssid[MAX_SSID_LEN + 1]; /* AP's ssid */
92 int channel;
93 unsigned long last_beacon; /* last RX beacon time */
94 } ap;
95 } u;
96
97 struct timer_list timer;
98 enum { STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH } timeout_next;
99#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
100};
101
102
103#define MAX_STA_COUNT 1024
104
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
108
109#define STA_HASH_SIZE 256
110#define STA_HASH(sta) (sta[5])
111
112
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)
123
124/* ap_policy: whether to accept frames to/from other APs/IBSS */
125typedef enum {
126 AP_OTHER_AP_SKIP_ALL = 0,
127 AP_OTHER_AP_SAME_SSID = 1,
128 AP_OTHER_AP_ALL = 2,
129 AP_OTHER_AP_EVEN_IBSS = 3
130} ap_policy_enum;
131
132#define PRISM2_AUTH_OPEN BIT(0)
133#define PRISM2_AUTH_SHARED_KEY BIT(1)
134
135
136/* MAC address-based restrictions */
137struct mac_entry {
138 struct list_head list;
139 u8 addr[6];
140};
141
142struct 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;
146 spinlock_t lock;
147};
148
149
150struct add_sta_proc_data {
151 u8 addr[ETH_ALEN];
152 struct add_sta_proc_data *next;
153};
154
155
156typedef enum { WDS_ADD, WDS_DEL } wds_oper_type;
157struct wds_oper_data {
158 wds_oper_type type;
159 u8 addr[ETH_ALEN];
160 struct wds_oper_data *next;
161};
162
163
164struct ap_data {
165 int initialized; /* whether ap_data has been initialized */
166 local_info_t *local;
167 int bridge_packets; /* send packet to associated STAs directly to the
168 * wireless media instead of higher layers in the
169 * kernel */
170 unsigned int bridged_unicast; /* number of unicast frames bridged on
171 * wireless media */
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 */
178
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];
183
184 struct proc_dir_entry *proc;
185
186 ap_policy_enum ap_policy;
187 unsigned int max_inactivity;
188 int autom_ap_wds;
189
190 struct mac_restrictions mac_restrictions; /* MAC-based auth */
191 int last_tx_rate;
192
193 struct work_struct add_sta_proc_queue;
194 struct add_sta_proc_data *add_sta_proc_entries;
195
196 struct work_struct wds_oper_queue;
197 struct wds_oper_data *wds_oper_entries;
198
199 u16 tx_callback_idx;
200
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
204 * and so on
205 */
206 struct sta_info *sta_aid[MAX_AID_TABLE_SIZE];
207
208 u16 tx_callback_auth, tx_callback_assoc, tx_callback_poll;
209
210 /* WEP operations for generating challenges to be used with shared key
211 * authentication */
212 struct lib80211_crypto_ops *crypt;
213 void *crypt_priv;
214#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
215};
216
217
218void hostap_rx(struct net_device *dev, struct sk_buff *skb,
219 struct hostap_80211_rx_status *rx_stats);
220void hostap_init_data(local_info_t *local);
221void hostap_init_ap_proc(local_info_t *local);
222void hostap_free_data(struct ap_data *ap);
223void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver);
224
225typedef enum {
226 AP_TX_CONTINUE, AP_TX_DROP, AP_TX_RETRY, AP_TX_BUFFERED,
227 AP_TX_CONTINUE_NOT_AUTHORIZED
228} ap_tx_ret;
229struct hostap_tx_data {
230 struct sk_buff *skb;
231 int host_encrypt;
232 struct lib80211_crypt_data *crypt;
233 void *sta_ptr;
234};
235ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx);
236void hostap_handle_sta_release(void *ptr);
237void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb);
238int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr);
239typedef enum {
240 AP_RX_CONTINUE, AP_RX_DROP, AP_RX_EXIT, AP_RX_CONTINUE_NOT_AUTHORIZED
241} ap_rx_ret;
242ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
243 struct sk_buff *skb,
244 struct hostap_80211_rx_status *rx_stats,
245 int wds);
246int hostap_handle_sta_crypto(local_info_t *local, struct ieee80211_hdr *hdr,
247 struct lib80211_crypt_data **crypt,
248 void **sta_ptr);
249int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr);
250int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr);
251int hostap_add_sta(struct ap_data *ap, u8 *sta_addr);
252int hostap_update_rx_stats(struct ap_data *ap, struct ieee80211_hdr *hdr,
253 struct hostap_80211_rx_status *rx_stats);
254void hostap_update_rates(local_info_t *local);
255void hostap_add_wds_links(local_info_t *local);
256void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type);
257
258#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
259void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap,
260 int resend);
261#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
262
263#endif /* HOSTAP_AP_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef HOSTAP_AP_H
3#define HOSTAP_AP_H
4
5#include "hostap_80211.h"
6
7/* AP data structures for STAs */
8
9/* maximum number of frames to buffer per STA */
10#define STA_MAX_TX_BUFFER 32
11
12/* STA flags */
13#define WLAN_STA_AUTH BIT(0)
14#define WLAN_STA_ASSOC BIT(1)
15#define WLAN_STA_PS BIT(2)
16#define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
17#define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
18#define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
19 * controlling whether STA is authorized to
20 * send and receive non-IEEE 802.1X frames
21 */
22#define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */
23
24#define WLAN_RATE_1M BIT(0)
25#define WLAN_RATE_2M BIT(1)
26#define WLAN_RATE_5M5 BIT(2)
27#define WLAN_RATE_11M BIT(3)
28#define WLAN_RATE_COUNT 4
29
30/* Maximum size of Supported Rates info element. IEEE 802.11 has a limit of 8,
31 * but some pre-standard IEEE 802.11g products use longer elements. */
32#define WLAN_SUPP_RATES_MAX 32
33
34/* Try to increase TX rate after # successfully sent consecutive packets */
35#define WLAN_RATE_UPDATE_COUNT 50
36
37/* Decrease TX rate after # consecutive dropped packets */
38#define WLAN_RATE_DECREASE_THRESHOLD 2
39
40struct sta_info {
41 struct list_head list;
42 struct sta_info *hnext; /* next entry in hash table list */
43 atomic_t users; /* number of users (do not remove if > 0) */
44 struct proc_dir_entry *proc;
45
46 u8 addr[6];
47 u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
48 u32 flags;
49 u16 capability;
50 u16 listen_interval; /* or beacon_int for APs */
51 u8 supported_rates[WLAN_SUPP_RATES_MAX];
52
53 unsigned long last_auth;
54 unsigned long last_assoc;
55 unsigned long last_rx;
56 unsigned long last_tx;
57 unsigned long rx_packets, tx_packets;
58 unsigned long rx_bytes, tx_bytes;
59 struct sk_buff_head tx_buf;
60 /* FIX: timeout buffers with an expiry time somehow derived from
61 * listen_interval */
62
63 s8 last_rx_silence; /* Noise in dBm */
64 s8 last_rx_signal; /* Signal strength in dBm */
65 u8 last_rx_rate; /* TX rate in 0.1 Mbps */
66 u8 last_rx_updated; /* IWSPY's struct iw_quality::updated */
67
68 u8 tx_supp_rates; /* bit field of supported TX rates */
69 u8 tx_rate; /* current TX rate (in 0.1 Mbps) */
70 u8 tx_rate_idx; /* current TX rate (WLAN_RATE_*) */
71 u8 tx_max_rate; /* max TX rate (WLAN_RATE_*) */
72 u32 tx_count[WLAN_RATE_COUNT]; /* number of frames sent (per rate) */
73 u32 rx_count[WLAN_RATE_COUNT]; /* number of frames received (per rate)
74 */
75 u32 tx_since_last_failure;
76 u32 tx_consecutive_exc;
77
78 struct lib80211_crypt_data *crypt;
79
80 int ap; /* whether this station is an AP */
81
82 local_info_t *local;
83
84#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
85 union {
86 struct {
87 char *challenge; /* shared key authentication
88 * challenge */
89 } sta;
90 struct {
91 int ssid_len;
92 unsigned char ssid[MAX_SSID_LEN + 1]; /* AP's ssid */
93 int channel;
94 unsigned long last_beacon; /* last RX beacon time */
95 } ap;
96 } u;
97
98 struct timer_list timer;
99 enum { STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH } timeout_next;
100#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
101};
102
103
104#define MAX_STA_COUNT 1024
105
106/* Maximum number of AIDs to use for STAs; must be 2007 or lower
107 * (8802.11 limitation) */
108#define MAX_AID_TABLE_SIZE 128
109
110#define STA_HASH_SIZE 256
111#define STA_HASH(sta) (sta[5])
112
113
114/* Default value for maximum station inactivity. After AP_MAX_INACTIVITY_SEC
115 * has passed since last received frame from the station, a nullfunc data
116 * frame is sent to the station. If this frame is not acknowledged and no other
117 * frames have been received, the station will be disassociated after
118 * AP_DISASSOC_DELAY. Similarly, a the station will be deauthenticated after
119 * AP_DEAUTH_DELAY. AP_TIMEOUT_RESOLUTION is the resolution that is used with
120 * max inactivity timer. */
121#define AP_MAX_INACTIVITY_SEC (5 * 60)
122#define AP_DISASSOC_DELAY (HZ)
123#define AP_DEAUTH_DELAY (HZ)
124
125/* ap_policy: whether to accept frames to/from other APs/IBSS */
126typedef enum {
127 AP_OTHER_AP_SKIP_ALL = 0,
128 AP_OTHER_AP_SAME_SSID = 1,
129 AP_OTHER_AP_ALL = 2,
130 AP_OTHER_AP_EVEN_IBSS = 3
131} ap_policy_enum;
132
133#define PRISM2_AUTH_OPEN BIT(0)
134#define PRISM2_AUTH_SHARED_KEY BIT(1)
135
136
137/* MAC address-based restrictions */
138struct mac_entry {
139 struct list_head list;
140 u8 addr[6];
141};
142
143struct mac_restrictions {
144 enum { MAC_POLICY_OPEN = 0, MAC_POLICY_ALLOW, MAC_POLICY_DENY } policy;
145 unsigned int entries;
146 struct list_head mac_list;
147 spinlock_t lock;
148};
149
150
151struct add_sta_proc_data {
152 u8 addr[ETH_ALEN];
153 struct add_sta_proc_data *next;
154};
155
156
157typedef enum { WDS_ADD, WDS_DEL } wds_oper_type;
158struct wds_oper_data {
159 wds_oper_type type;
160 u8 addr[ETH_ALEN];
161 struct wds_oper_data *next;
162};
163
164
165struct ap_data {
166 int initialized; /* whether ap_data has been initialized */
167 local_info_t *local;
168 int bridge_packets; /* send packet to associated STAs directly to the
169 * wireless media instead of higher layers in the
170 * kernel */
171 unsigned int bridged_unicast; /* number of unicast frames bridged on
172 * wireless media */
173 unsigned int bridged_multicast; /* number of non-unicast frames
174 * bridged on wireless media */
175 unsigned int tx_drop_nonassoc; /* number of unicast TX packets dropped
176 * because they were to an address that
177 * was not associated */
178 int nullfunc_ack; /* use workaround for nullfunc frame ACKs */
179
180 spinlock_t sta_table_lock;
181 int num_sta; /* number of entries in sta_list */
182 struct list_head sta_list; /* STA info list head */
183 struct sta_info *sta_hash[STA_HASH_SIZE];
184
185 struct proc_dir_entry *proc;
186
187 ap_policy_enum ap_policy;
188 unsigned int max_inactivity;
189 int autom_ap_wds;
190
191 struct mac_restrictions mac_restrictions; /* MAC-based auth */
192 int last_tx_rate;
193
194 struct work_struct add_sta_proc_queue;
195 struct add_sta_proc_data *add_sta_proc_entries;
196
197 struct work_struct wds_oper_queue;
198 struct wds_oper_data *wds_oper_entries;
199
200 u16 tx_callback_idx;
201
202#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
203 /* pointers to STA info; based on allocated AID or NULL if AID free
204 * AID is in the range 1-2007, so sta_aid[0] corresponders to AID 1
205 * and so on
206 */
207 struct sta_info *sta_aid[MAX_AID_TABLE_SIZE];
208
209 u16 tx_callback_auth, tx_callback_assoc, tx_callback_poll;
210
211 /* WEP operations for generating challenges to be used with shared key
212 * authentication */
213 struct lib80211_crypto_ops *crypt;
214 void *crypt_priv;
215#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
216};
217
218
219void hostap_rx(struct net_device *dev, struct sk_buff *skb,
220 struct hostap_80211_rx_status *rx_stats);
221void hostap_init_data(local_info_t *local);
222void hostap_init_ap_proc(local_info_t *local);
223void hostap_free_data(struct ap_data *ap);
224void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver);
225
226typedef enum {
227 AP_TX_CONTINUE, AP_TX_DROP, AP_TX_RETRY, AP_TX_BUFFERED,
228 AP_TX_CONTINUE_NOT_AUTHORIZED
229} ap_tx_ret;
230struct hostap_tx_data {
231 struct sk_buff *skb;
232 int host_encrypt;
233 struct lib80211_crypt_data *crypt;
234 void *sta_ptr;
235};
236ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx);
237void hostap_handle_sta_release(void *ptr);
238void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb);
239int hostap_update_sta_ps(local_info_t *local, struct ieee80211_hdr *hdr);
240typedef enum {
241 AP_RX_CONTINUE, AP_RX_DROP, AP_RX_EXIT, AP_RX_CONTINUE_NOT_AUTHORIZED
242} ap_rx_ret;
243ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
244 struct sk_buff *skb,
245 struct hostap_80211_rx_status *rx_stats,
246 int wds);
247int hostap_handle_sta_crypto(local_info_t *local, struct ieee80211_hdr *hdr,
248 struct lib80211_crypt_data **crypt,
249 void **sta_ptr);
250int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr);
251int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr);
252int hostap_add_sta(struct ap_data *ap, u8 *sta_addr);
253int hostap_update_rx_stats(struct ap_data *ap, struct ieee80211_hdr *hdr,
254 struct hostap_80211_rx_status *rx_stats);
255void hostap_update_rates(local_info_t *local);
256void hostap_add_wds_links(local_info_t *local);
257void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type);
258
259#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
260void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap,
261 int resend);
262#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
263
264#endif /* HOSTAP_AP_H */