This source file includes following definitions.
- fakelb_hw_ed
- fakelb_hw_channel
- fakelb_hw_xmit
- fakelb_hw_start
- fakelb_hw_stop
- fakelb_set_promiscuous_mode
- fakelb_add_one
- fakelb_del
- fakelb_probe
- fakelb_remove
- fakelb_init_module
- fake_remove_module
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13 #include <linux/module.h>
14 #include <linux/timer.h>
15 #include <linux/platform_device.h>
16 #include <linux/netdevice.h>
17 #include <linux/device.h>
18 #include <linux/spinlock.h>
19 #include <net/mac802154.h>
20 #include <net/cfg802154.h>
21
22 static int numlbs = 2;
23
24 static LIST_HEAD(fakelb_phys);
25 static DEFINE_MUTEX(fakelb_phys_lock);
26
27 static LIST_HEAD(fakelb_ifup_phys);
28 static DEFINE_RWLOCK(fakelb_ifup_phys_lock);
29
30 struct fakelb_phy {
31 struct ieee802154_hw *hw;
32
33 u8 page;
34 u8 channel;
35
36 bool suspended;
37
38 struct list_head list;
39 struct list_head list_ifup;
40 };
41
42 static int fakelb_hw_ed(struct ieee802154_hw *hw, u8 *level)
43 {
44 WARN_ON(!level);
45 *level = 0xbe;
46
47 return 0;
48 }
49
50 static int fakelb_hw_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
51 {
52 struct fakelb_phy *phy = hw->priv;
53
54 write_lock_bh(&fakelb_ifup_phys_lock);
55 phy->page = page;
56 phy->channel = channel;
57 write_unlock_bh(&fakelb_ifup_phys_lock);
58 return 0;
59 }
60
61 static int fakelb_hw_xmit(struct ieee802154_hw *hw, struct sk_buff *skb)
62 {
63 struct fakelb_phy *current_phy = hw->priv, *phy;
64
65 read_lock_bh(&fakelb_ifup_phys_lock);
66 WARN_ON(current_phy->suspended);
67 list_for_each_entry(phy, &fakelb_ifup_phys, list_ifup) {
68 if (current_phy == phy)
69 continue;
70
71 if (current_phy->page == phy->page &&
72 current_phy->channel == phy->channel) {
73 struct sk_buff *newskb = pskb_copy(skb, GFP_ATOMIC);
74
75 if (newskb)
76 ieee802154_rx_irqsafe(phy->hw, newskb, 0xcc);
77 }
78 }
79 read_unlock_bh(&fakelb_ifup_phys_lock);
80
81 ieee802154_xmit_complete(hw, skb, false);
82 return 0;
83 }
84
85 static int fakelb_hw_start(struct ieee802154_hw *hw)
86 {
87 struct fakelb_phy *phy = hw->priv;
88
89 write_lock_bh(&fakelb_ifup_phys_lock);
90 phy->suspended = false;
91 list_add(&phy->list_ifup, &fakelb_ifup_phys);
92 write_unlock_bh(&fakelb_ifup_phys_lock);
93
94 return 0;
95 }
96
97 static void fakelb_hw_stop(struct ieee802154_hw *hw)
98 {
99 struct fakelb_phy *phy = hw->priv;
100
101 write_lock_bh(&fakelb_ifup_phys_lock);
102 phy->suspended = true;
103 list_del(&phy->list_ifup);
104 write_unlock_bh(&fakelb_ifup_phys_lock);
105 }
106
107 static int
108 fakelb_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on)
109 {
110 return 0;
111 }
112
113 static const struct ieee802154_ops fakelb_ops = {
114 .owner = THIS_MODULE,
115 .xmit_async = fakelb_hw_xmit,
116 .ed = fakelb_hw_ed,
117 .set_channel = fakelb_hw_channel,
118 .start = fakelb_hw_start,
119 .stop = fakelb_hw_stop,
120 .set_promiscuous_mode = fakelb_set_promiscuous_mode,
121 };
122
123
124 module_param(numlbs, int, 0);
125 MODULE_PARM_DESC(numlbs, " number of pseudo devices");
126
127 static int fakelb_add_one(struct device *dev)
128 {
129 struct ieee802154_hw *hw;
130 struct fakelb_phy *phy;
131 int err;
132
133 hw = ieee802154_alloc_hw(sizeof(*phy), &fakelb_ops);
134 if (!hw)
135 return -ENOMEM;
136
137 phy = hw->priv;
138 phy->hw = hw;
139
140
141 hw->phy->supported.channels[0] |= 1;
142
143 hw->phy->supported.channels[0] |= 0x7fe;
144
145 hw->phy->supported.channels[0] |= 0x7FFF800;
146
147 hw->phy->supported.channels[1] |= 1;
148
149 hw->phy->supported.channels[1] |= 0x7fe;
150
151 hw->phy->supported.channels[2] |= 1;
152
153 hw->phy->supported.channels[2] |= 0x7fe;
154
155 hw->phy->supported.channels[3] |= 0x3fff;
156
157 hw->phy->supported.channels[4] |= 1;
158
159 hw->phy->supported.channels[4] |= 0x1e;
160
161 hw->phy->supported.channels[4] |= 0xffe0;
162
163 hw->phy->supported.channels[5] |= 0xf;
164
165 hw->phy->supported.channels[5] |= 0xf0;
166
167 hw->phy->supported.channels[6] |= 0x3ff;
168
169 hw->phy->supported.channels[6] |= 0x3ffc00;
170
171 ieee802154_random_extended_addr(&hw->phy->perm_extended_addr);
172
173 hw->phy->current_channel = 13;
174 phy->channel = hw->phy->current_channel;
175
176 hw->flags = IEEE802154_HW_PROMISCUOUS;
177 hw->parent = dev;
178
179 err = ieee802154_register_hw(hw);
180 if (err)
181 goto err_reg;
182
183 mutex_lock(&fakelb_phys_lock);
184 list_add_tail(&phy->list, &fakelb_phys);
185 mutex_unlock(&fakelb_phys_lock);
186
187 return 0;
188
189 err_reg:
190 ieee802154_free_hw(phy->hw);
191 return err;
192 }
193
194 static void fakelb_del(struct fakelb_phy *phy)
195 {
196 list_del(&phy->list);
197
198 ieee802154_unregister_hw(phy->hw);
199 ieee802154_free_hw(phy->hw);
200 }
201
202 static int fakelb_probe(struct platform_device *pdev)
203 {
204 struct fakelb_phy *phy, *tmp;
205 int err, i;
206
207 for (i = 0; i < numlbs; i++) {
208 err = fakelb_add_one(&pdev->dev);
209 if (err < 0)
210 goto err_slave;
211 }
212
213 dev_info(&pdev->dev, "added %i fake ieee802154 hardware devices\n", numlbs);
214 return 0;
215
216 err_slave:
217 mutex_lock(&fakelb_phys_lock);
218 list_for_each_entry_safe(phy, tmp, &fakelb_phys, list)
219 fakelb_del(phy);
220 mutex_unlock(&fakelb_phys_lock);
221 return err;
222 }
223
224 static int fakelb_remove(struct platform_device *pdev)
225 {
226 struct fakelb_phy *phy, *tmp;
227
228 mutex_lock(&fakelb_phys_lock);
229 list_for_each_entry_safe(phy, tmp, &fakelb_phys, list)
230 fakelb_del(phy);
231 mutex_unlock(&fakelb_phys_lock);
232 return 0;
233 }
234
235 static struct platform_device *ieee802154fake_dev;
236
237 static struct platform_driver ieee802154fake_driver = {
238 .probe = fakelb_probe,
239 .remove = fakelb_remove,
240 .driver = {
241 .name = "ieee802154fakelb",
242 },
243 };
244
245 static __init int fakelb_init_module(void)
246 {
247 ieee802154fake_dev = platform_device_register_simple(
248 "ieee802154fakelb", -1, NULL, 0);
249
250 pr_warn("fakelb driver is marked as deprecated, please use mac802154_hwsim!\n");
251
252 return platform_driver_register(&ieee802154fake_driver);
253 }
254
255 static __exit void fake_remove_module(void)
256 {
257 platform_driver_unregister(&ieee802154fake_driver);
258 platform_device_unregister(ieee802154fake_dev);
259 }
260
261 module_init(fakelb_init_module);
262 module_exit(fake_remove_module);
263 MODULE_LICENSE("GPL");