This source file includes following definitions.
- ieee802154_tasklet_handler
- ieee802154_alloc_hw
- ieee802154_free_hw
- ieee802154_setup_wpan_phy_pib
- ieee802154_register_hw
- ieee802154_unregister_hw
- ieee802154_init
- ieee802154_exit
1
2
3
4
5
6
7
8
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/netdevice.h>
12
13 #include <net/netlink.h>
14 #include <net/nl802154.h>
15 #include <net/mac802154.h>
16 #include <net/ieee802154_netdev.h>
17 #include <net/route.h>
18 #include <net/cfg802154.h>
19
20 #include "ieee802154_i.h"
21 #include "cfg.h"
22
23 static void ieee802154_tasklet_handler(unsigned long data)
24 {
25 struct ieee802154_local *local = (struct ieee802154_local *)data;
26 struct sk_buff *skb;
27
28 while ((skb = skb_dequeue(&local->skb_queue))) {
29 switch (skb->pkt_type) {
30 case IEEE802154_RX_MSG:
31
32
33
34 skb->pkt_type = 0;
35 ieee802154_rx(local, skb);
36 break;
37 default:
38 WARN(1, "mac802154: Packet is of unknown type %d\n",
39 skb->pkt_type);
40 kfree_skb(skb);
41 break;
42 }
43 }
44 }
45
46 struct ieee802154_hw *
47 ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops)
48 {
49 struct wpan_phy *phy;
50 struct ieee802154_local *local;
51 size_t priv_size;
52
53 if (WARN_ON(!ops || !(ops->xmit_async || ops->xmit_sync) || !ops->ed ||
54 !ops->start || !ops->stop || !ops->set_channel))
55 return NULL;
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
76
77 phy = wpan_phy_new(&mac802154_config_ops, priv_size);
78 if (!phy) {
79 pr_err("failure to allocate master IEEE802.15.4 device\n");
80 return NULL;
81 }
82
83 phy->privid = mac802154_wpan_phy_privid;
84
85 local = wpan_phy_priv(phy);
86 local->phy = phy;
87 local->hw.phy = local->phy;
88 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
89 local->ops = ops;
90
91 INIT_LIST_HEAD(&local->interfaces);
92 mutex_init(&local->iflist_mtx);
93
94 tasklet_init(&local->tasklet,
95 ieee802154_tasklet_handler,
96 (unsigned long)local);
97
98 skb_queue_head_init(&local->skb_queue);
99
100 INIT_WORK(&local->tx_work, ieee802154_xmit_worker);
101
102
103 phy->supported.max_minbe = 8;
104 phy->supported.min_maxbe = 3;
105 phy->supported.max_maxbe = 8;
106 phy->supported.min_frame_retries = 0;
107 phy->supported.max_frame_retries = 7;
108 phy->supported.max_csma_backoffs = 5;
109 phy->supported.lbt = NL802154_SUPPORTED_BOOL_FALSE;
110
111
112 phy->supported.iftypes = BIT(NL802154_IFTYPE_NODE);
113
114 return &local->hw;
115 }
116 EXPORT_SYMBOL(ieee802154_alloc_hw);
117
118 void ieee802154_free_hw(struct ieee802154_hw *hw)
119 {
120 struct ieee802154_local *local = hw_to_local(hw);
121
122 BUG_ON(!list_empty(&local->interfaces));
123
124 mutex_destroy(&local->iflist_mtx);
125
126 wpan_phy_free(local->phy);
127 }
128 EXPORT_SYMBOL(ieee802154_free_hw);
129
130 static void ieee802154_setup_wpan_phy_pib(struct wpan_phy *wpan_phy)
131 {
132
133
134
135
136 wpan_phy->lifs_period = IEEE802154_LIFS_PERIOD *
137 wpan_phy->symbol_duration;
138 wpan_phy->sifs_period = IEEE802154_SIFS_PERIOD *
139 wpan_phy->symbol_duration;
140 }
141
142 int ieee802154_register_hw(struct ieee802154_hw *hw)
143 {
144 struct ieee802154_local *local = hw_to_local(hw);
145 struct net_device *dev;
146 int rc = -ENOSYS;
147
148 local->workqueue =
149 create_singlethread_workqueue(wpan_phy_name(local->phy));
150 if (!local->workqueue) {
151 rc = -ENOMEM;
152 goto out;
153 }
154
155 hrtimer_init(&local->ifs_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
156 local->ifs_timer.function = ieee802154_xmit_ifs_timer;
157
158 wpan_phy_set_dev(local->phy, local->hw.parent);
159
160 ieee802154_setup_wpan_phy_pib(local->phy);
161
162 if (!(hw->flags & IEEE802154_HW_CSMA_PARAMS)) {
163 local->phy->supported.min_csma_backoffs = 4;
164 local->phy->supported.max_csma_backoffs = 4;
165 local->phy->supported.min_maxbe = 5;
166 local->phy->supported.max_maxbe = 5;
167 local->phy->supported.min_minbe = 3;
168 local->phy->supported.max_minbe = 3;
169 }
170
171 if (!(hw->flags & IEEE802154_HW_FRAME_RETRIES)) {
172 local->phy->supported.min_frame_retries = 3;
173 local->phy->supported.max_frame_retries = 3;
174 }
175
176 if (hw->flags & IEEE802154_HW_PROMISCUOUS)
177 local->phy->supported.iftypes |= BIT(NL802154_IFTYPE_MONITOR);
178
179 rc = wpan_phy_register(local->phy);
180 if (rc < 0)
181 goto out_wq;
182
183 rtnl_lock();
184
185 dev = ieee802154_if_add(local, "wpan%d", NET_NAME_ENUM,
186 NL802154_IFTYPE_NODE,
187 cpu_to_le64(0x0000000000000000ULL));
188 if (IS_ERR(dev)) {
189 rtnl_unlock();
190 rc = PTR_ERR(dev);
191 goto out_phy;
192 }
193
194 rtnl_unlock();
195
196 return 0;
197
198 out_phy:
199 wpan_phy_unregister(local->phy);
200 out_wq:
201 destroy_workqueue(local->workqueue);
202 out:
203 return rc;
204 }
205 EXPORT_SYMBOL(ieee802154_register_hw);
206
207 void ieee802154_unregister_hw(struct ieee802154_hw *hw)
208 {
209 struct ieee802154_local *local = hw_to_local(hw);
210
211 tasklet_kill(&local->tasklet);
212 flush_workqueue(local->workqueue);
213
214 rtnl_lock();
215
216 ieee802154_remove_interfaces(local);
217
218 rtnl_unlock();
219
220 destroy_workqueue(local->workqueue);
221 wpan_phy_unregister(local->phy);
222 }
223 EXPORT_SYMBOL(ieee802154_unregister_hw);
224
225 static int __init ieee802154_init(void)
226 {
227 return ieee802154_iface_init();
228 }
229
230 static void __exit ieee802154_exit(void)
231 {
232 ieee802154_iface_exit();
233
234 rcu_barrier();
235 }
236
237 subsys_initcall(ieee802154_init);
238 module_exit(ieee802154_exit);
239
240 MODULE_DESCRIPTION("IEEE 802.15.4 subsystem");
241 MODULE_LICENSE("GPL v2");