1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* 2 /*
3 * Copyright (C) 2007-2012 Siemens AG 3 * Copyright (C) 2007-2012 Siemens AG
4 * 4 *
5 * Written by: 5 * Written by:
6 * Pavel Smolenskiy <pavel.smolenskiy@gmail.co 6 * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
7 * Maxim Gorbachyov <maxim.gorbachev@siemens.c 7 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
8 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.c 8 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
9 * Alexander Smirnov <alex.bluesman.smirnov@gm 9 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
10 */ 10 */
11 #ifndef __IEEE802154_I_H 11 #ifndef __IEEE802154_I_H
12 #define __IEEE802154_I_H 12 #define __IEEE802154_I_H
13 13
14 #include <linux/interrupt.h> 14 #include <linux/interrupt.h>
15 #include <linux/mutex.h> 15 #include <linux/mutex.h>
16 #include <linux/hrtimer.h> 16 #include <linux/hrtimer.h>
17 #include <net/cfg802154.h> 17 #include <net/cfg802154.h>
18 #include <net/mac802154.h> 18 #include <net/mac802154.h>
19 #include <net/nl802154.h> 19 #include <net/nl802154.h>
20 #include <net/ieee802154_netdev.h> 20 #include <net/ieee802154_netdev.h>
21 21
22 #include "llsec.h" 22 #include "llsec.h"
23 23
24 enum ieee802154_ongoing { <<
25 IEEE802154_IS_SCANNING = BIT(0), <<
26 IEEE802154_IS_BEACONING = BIT(1), <<
27 IEEE802154_IS_ASSOCIATING = BIT(2), <<
28 }; <<
29 <<
30 /* mac802154 device private data */ 24 /* mac802154 device private data */
31 struct ieee802154_local { 25 struct ieee802154_local {
32 struct ieee802154_hw hw; 26 struct ieee802154_hw hw;
33 const struct ieee802154_ops *ops; 27 const struct ieee802154_ops *ops;
34 28
35 /* hardware address filter */ <<
36 struct ieee802154_hw_addr_filt addr_fi <<
37 /* ieee802154 phy */ 29 /* ieee802154 phy */
38 struct wpan_phy *phy; 30 struct wpan_phy *phy;
39 31
40 int open_count; 32 int open_count;
41 33
42 /* As in mac80211 slaves list is modif 34 /* As in mac80211 slaves list is modified:
43 * 1) under the RTNL 35 * 1) under the RTNL
44 * 2) protected by slaves_mtx; 36 * 2) protected by slaves_mtx;
45 * 3) in an RCU manner 37 * 3) in an RCU manner
46 * 38 *
47 * So atomic readers can use any of th 39 * So atomic readers can use any of this protection methods.
48 */ 40 */
49 struct list_head interfaces; 41 struct list_head interfaces;
50 struct mutex iflist_mtx; 42 struct mutex iflist_mtx;
51 43
52 /* Data related workqueue */ !! 44 /* This one is used for scanning and other jobs not to be interfered
>> 45 * with serial driver.
>> 46 */
53 struct workqueue_struct *workqueue; 47 struct workqueue_struct *workqueue;
54 /* MAC commands related workqueue */ <<
55 struct workqueue_struct *mac_wq; <<
56 48
57 struct hrtimer ifs_timer; 49 struct hrtimer ifs_timer;
58 50
59 /* Scanning */ <<
60 u8 scan_page; <<
61 u8 scan_channel; <<
62 struct ieee802154_beacon_req_frame sca <<
63 struct cfg802154_scan_request __rcu *s <<
64 struct delayed_work scan_work; <<
65 <<
66 /* Beaconing */ <<
67 unsigned int beacon_interval; <<
68 struct ieee802154_beacon_frame beacon; <<
69 struct cfg802154_beacon_request __rcu <<
70 struct delayed_work beacon_work; <<
71 <<
72 /* Asynchronous tasks */ <<
73 struct list_head rx_beacon_list; <<
74 struct work_struct rx_beacon_work; <<
75 struct list_head rx_mac_cmd_list; <<
76 struct work_struct rx_mac_cmd_work; <<
77 <<
78 /* Association */ <<
79 struct ieee802154_pan_device *assoc_de <<
80 struct completion assoc_done; <<
81 __le16 assoc_addr; <<
82 u8 assoc_status; <<
83 struct work_struct assoc_work; <<
84 <<
85 bool started; 51 bool started;
86 bool suspended; 52 bool suspended;
87 unsigned long ongoing; <<
88 53
89 struct tasklet_struct tasklet; 54 struct tasklet_struct tasklet;
90 struct sk_buff_head skb_queue; 55 struct sk_buff_head skb_queue;
91 56
92 struct sk_buff *tx_skb; 57 struct sk_buff *tx_skb;
93 struct work_struct sync_tx_work; !! 58 struct work_struct tx_work;
94 /* A negative Linux error code or a nu <<
95 int tx_result; <<
96 }; 59 };
97 60
98 enum { 61 enum {
99 IEEE802154_RX_MSG = 1, 62 IEEE802154_RX_MSG = 1,
100 }; 63 };
101 64
102 enum ieee802154_sdata_state_bits { 65 enum ieee802154_sdata_state_bits {
103 SDATA_STATE_RUNNING, 66 SDATA_STATE_RUNNING,
104 }; 67 };
105 68
106 /* Slave interface definition. 69 /* Slave interface definition.
107 * 70 *
108 * Slaves represent typical network interfaces 71 * Slaves represent typical network interfaces available from userspace.
109 * Each ieee802154 device/transceiver may have 72 * Each ieee802154 device/transceiver may have several slaves and able
110 * to be associated with several networks at t 73 * to be associated with several networks at the same time.
111 */ 74 */
112 struct ieee802154_sub_if_data { 75 struct ieee802154_sub_if_data {
113 struct list_head list; /* the ieee8021 76 struct list_head list; /* the ieee802154_priv->slaves list */
114 77
115 struct wpan_dev wpan_dev; 78 struct wpan_dev wpan_dev;
116 79
117 struct ieee802154_local *local; 80 struct ieee802154_local *local;
118 struct net_device *dev; 81 struct net_device *dev;
119 82
120 /* Each interface starts and works in <<
121 * level given by iface_default_filter <<
122 * the interface creation and should n <<
123 * operations however, the filtering l <<
124 * reflected in the required_filtering <<
125 * the PHY level may be different and <<
126 */ <<
127 enum ieee802154_filtering_level iface_ <<
128 enum ieee802154_filtering_level requir <<
129 <<
130 unsigned long state; 83 unsigned long state;
131 char name[IFNAMSIZ]; 84 char name[IFNAMSIZ];
132 85
133 /* protects sec from concurrent access 86 /* protects sec from concurrent access by netlink. access by
134 * encrypt/decrypt/header_create safe 87 * encrypt/decrypt/header_create safe without additional protection.
135 */ 88 */
136 struct mutex sec_mtx; 89 struct mutex sec_mtx;
137 90
138 struct mac802154_llsec sec; 91 struct mac802154_llsec sec;
139 }; 92 };
140 93
141 /* utility functions/constants */ 94 /* utility functions/constants */
142 extern const void *const mac802154_wpan_phy_pr 95 extern const void *const mac802154_wpan_phy_privid; /* for wpan_phy privid */
143 96
144 static inline struct ieee802154_local * 97 static inline struct ieee802154_local *
145 hw_to_local(struct ieee802154_hw *hw) 98 hw_to_local(struct ieee802154_hw *hw)
146 { 99 {
147 return container_of(hw, struct ieee802 100 return container_of(hw, struct ieee802154_local, hw);
148 } 101 }
149 102
150 static inline struct ieee802154_sub_if_data * 103 static inline struct ieee802154_sub_if_data *
151 IEEE802154_DEV_TO_SUB_IF(const struct net_devi 104 IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
152 { 105 {
153 return netdev_priv(dev); 106 return netdev_priv(dev);
154 } 107 }
155 108
156 static inline struct ieee802154_sub_if_data * 109 static inline struct ieee802154_sub_if_data *
157 IEEE802154_WPAN_DEV_TO_SUB_IF(struct wpan_dev 110 IEEE802154_WPAN_DEV_TO_SUB_IF(struct wpan_dev *wpan_dev)
158 { 111 {
159 return container_of(wpan_dev, struct i 112 return container_of(wpan_dev, struct ieee802154_sub_if_data, wpan_dev);
160 } 113 }
161 114
162 static inline bool 115 static inline bool
163 ieee802154_sdata_running(struct ieee802154_sub 116 ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
164 { 117 {
165 return test_bit(SDATA_STATE_RUNNING, & 118 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
166 } 119 }
167 120
168 static inline int ieee802154_get_mac_cmd(struc <<
169 { <<
170 struct ieee802154_mac_cmd_pl mac_pl; <<
171 int ret; <<
172 <<
173 if (mac_cb(skb)->type != IEEE802154_FC <<
174 return -EINVAL; <<
175 <<
176 ret = ieee802154_mac_cmd_pl_pull(skb, <<
177 if (ret) <<
178 return ret; <<
179 <<
180 *mac_cmd = mac_pl.cmd_id; <<
181 return 0; <<
182 } <<
183 <<
184 extern struct ieee802154_mlme_ops mac802154_ml 121 extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
185 122
186 void ieee802154_rx(struct ieee802154_local *lo 123 void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
187 void ieee802154_xmit_sync_worker(struct work_s !! 124 void ieee802154_xmit_worker(struct work_struct *work);
188 int ieee802154_sync_and_hold_queue(struct ieee <<
189 int ieee802154_mlme_op_pre(struct ieee802154_l <<
190 int ieee802154_mlme_tx(struct ieee802154_local <<
191 struct ieee802154_sub_i <<
192 struct sk_buff *skb); <<
193 int ieee802154_mlme_tx_locked(struct ieee80215 <<
194 struct ieee80215 <<
195 struct sk_buff * <<
196 void ieee802154_mlme_op_post(struct ieee802154 <<
197 int ieee802154_mlme_tx_one(struct ieee802154_l <<
198 struct ieee802154_s <<
199 struct sk_buff *skb <<
200 int ieee802154_mlme_tx_one_locked(struct ieee8 <<
201 struct ieee8 <<
202 struct sk_bu <<
203 netdev_tx_t 125 netdev_tx_t
204 ieee802154_monitor_start_xmit(struct sk_buff * 126 ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
205 netdev_tx_t 127 netdev_tx_t
206 ieee802154_subif_start_xmit(struct sk_buff *sk 128 ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
207 enum hrtimer_restart ieee802154_xmit_ifs_timer 129 enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
208 130
209 /** <<
210 * ieee802154_hold_queue - hold ieee802154 que <<
211 * @local: main mac object <<
212 * <<
213 * Hold a queue by incrementing an atomic coun <<
214 * queues to be stopped. The queues cannot be <<
215 * been reset with as any ieee802154_release_q <<
216 */ <<
217 void ieee802154_hold_queue(struct ieee802154_l <<
218 <<
219 /** <<
220 * ieee802154_release_queue - release ieee8021 <<
221 * @local: main mac object <<
222 * <<
223 * Release a queue which is held by decrementi <<
224 * up only if the counter reaches 0. <<
225 */ <<
226 void ieee802154_release_queue(struct ieee80215 <<
227 <<
228 /** <<
229 * ieee802154_disable_queue - disable ieee8021 <<
230 * @local: main mac object <<
231 * <<
232 * When trying to sync the Tx queue, we cannot <<
233 * (which is basically a bit being set without <<
234 * because it would be racy. We actually need <<
235 * instead, which is done by this helper. Rest <<
236 * however still be done with a regular wake c <<
237 */ <<
238 void ieee802154_disable_queue(struct ieee80215 <<
239 <<
240 /* MIB callbacks */ 131 /* MIB callbacks */
241 void mac802154_dev_set_page_channel(struct net 132 void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
242 133
243 int mac802154_get_params(struct net_device *de 134 int mac802154_get_params(struct net_device *dev,
244 struct ieee802154_lls 135 struct ieee802154_llsec_params *params);
245 int mac802154_set_params(struct net_device *de 136 int mac802154_set_params(struct net_device *dev,
246 const struct ieee8021 137 const struct ieee802154_llsec_params *params,
247 int changed); 138 int changed);
248 139
249 int mac802154_add_key(struct net_device *dev, 140 int mac802154_add_key(struct net_device *dev,
250 const struct ieee802154_ 141 const struct ieee802154_llsec_key_id *id,
251 const struct ieee802154_ 142 const struct ieee802154_llsec_key *key);
252 int mac802154_del_key(struct net_device *dev, 143 int mac802154_del_key(struct net_device *dev,
253 const struct ieee802154_ 144 const struct ieee802154_llsec_key_id *id);
254 145
255 int mac802154_add_dev(struct net_device *dev, 146 int mac802154_add_dev(struct net_device *dev,
256 const struct ieee802154_ 147 const struct ieee802154_llsec_device *llsec_dev);
257 int mac802154_del_dev(struct net_device *dev, 148 int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
258 149
259 int mac802154_add_devkey(struct net_device *de 150 int mac802154_add_devkey(struct net_device *dev,
260 __le64 device_addr, 151 __le64 device_addr,
261 const struct ieee8021 152 const struct ieee802154_llsec_device_key *key);
262 int mac802154_del_devkey(struct net_device *de 153 int mac802154_del_devkey(struct net_device *dev,
263 __le64 device_addr, 154 __le64 device_addr,
264 const struct ieee8021 155 const struct ieee802154_llsec_device_key *key);
265 156
266 int mac802154_add_seclevel(struct net_device * 157 int mac802154_add_seclevel(struct net_device *dev,
267 const struct ieee80 158 const struct ieee802154_llsec_seclevel *sl);
268 int mac802154_del_seclevel(struct net_device * 159 int mac802154_del_seclevel(struct net_device *dev,
269 const struct ieee80 160 const struct ieee802154_llsec_seclevel *sl);
270 161
271 void mac802154_lock_table(struct net_device *d 162 void mac802154_lock_table(struct net_device *dev);
272 void mac802154_get_table(struct net_device *de 163 void mac802154_get_table(struct net_device *dev,
273 struct ieee802154_lls 164 struct ieee802154_llsec_table **t);
274 void mac802154_unlock_table(struct net_device 165 void mac802154_unlock_table(struct net_device *dev);
275 166
276 int mac802154_wpan_update_llsec(struct net_dev 167 int mac802154_wpan_update_llsec(struct net_device *dev);
277 <<
278 /* PAN management handling */ <<
279 void mac802154_scan_worker(struct work_struct <<
280 int mac802154_trigger_scan_locked(struct ieee8 <<
281 struct cfg80 <<
282 int mac802154_abort_scan_locked(struct ieee802 <<
283 struct ieee802 <<
284 int mac802154_process_beacon(struct ieee802154 <<
285 struct sk_buff *s <<
286 u8 page, u8 chann <<
287 void mac802154_rx_beacon_worker(struct work_st <<
288 <<
289 static inline bool mac802154_is_scanning(struc <<
290 { <<
291 return test_bit(IEEE802154_IS_SCANNING <<
292 } <<
293 <<
294 void mac802154_beacon_worker(struct work_struc <<
295 int mac802154_send_beacons_locked(struct ieee8 <<
296 struct cfg80 <<
297 int mac802154_stop_beacons_locked(struct ieee8 <<
298 struct ieee8 <<
299 <<
300 static inline bool mac802154_is_beaconing(stru <<
301 { <<
302 return test_bit(IEEE802154_IS_BEACONIN <<
303 } <<
304 <<
305 void mac802154_rx_mac_cmd_worker(struct work_s <<
306 <<
307 int mac802154_perform_association(struct ieee8 <<
308 struct ieee8 <<
309 __le16 *shor <<
310 int mac802154_process_association_resp(struct <<
311 struct <<
312 <<
313 static inline bool mac802154_is_associating(st <<
314 { <<
315 return test_bit(IEEE802154_IS_ASSOCIAT <<
316 } <<
317 <<
318 int mac802154_send_disassociation_notif(struct <<
319 struct <<
320 u8 rea <<
321 int mac802154_process_disassociation_notif(str <<
322 str <<
323 int mac802154_process_association_req(struct i <<
324 struct s <<
325 168
326 /* interface handling */ 169 /* interface handling */
327 int ieee802154_iface_init(void); 170 int ieee802154_iface_init(void);
328 void ieee802154_iface_exit(void); 171 void ieee802154_iface_exit(void);
329 void ieee802154_if_remove(struct ieee802154_su 172 void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
330 struct net_device * 173 struct net_device *
331 ieee802154_if_add(struct ieee802154_local *loc 174 ieee802154_if_add(struct ieee802154_local *local, const char *name,
332 unsigned char name_assign_ty 175 unsigned char name_assign_type, enum nl802154_iftype type,
333 __le64 extended_addr); 176 __le64 extended_addr);
334 void ieee802154_remove_interfaces(struct ieee8 177 void ieee802154_remove_interfaces(struct ieee802154_local *local);
335 void ieee802154_stop_device(struct ieee802154_ 178 void ieee802154_stop_device(struct ieee802154_local *local);
336 179
337 #endif /* __IEEE802154_I_H */ 180 #endif /* __IEEE802154_I_H */
338 181
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