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ff9fc791 HS |
1 | /* |
2 | * Implement cfg80211 ("iw") support. | |
3 | * | |
4 | * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany | |
5 | * Holger Schurig <hs4233@mail.mn-solutions.de> | |
6 | * | |
7 | */ | |
8 | ||
5a0e3ad6 | 9 | #include <linux/slab.h> |
ff9fc791 HS |
10 | #include <net/cfg80211.h> |
11 | ||
12 | #include "cfg.h" | |
13 | #include "cmd.h" | |
14 | ||
15 | ||
16 | #define CHAN2G(_channel, _freq, _flags) { \ | |
17 | .band = IEEE80211_BAND_2GHZ, \ | |
18 | .center_freq = (_freq), \ | |
19 | .hw_value = (_channel), \ | |
20 | .flags = (_flags), \ | |
21 | .max_antenna_gain = 0, \ | |
22 | .max_power = 30, \ | |
23 | } | |
24 | ||
25 | static struct ieee80211_channel lbs_2ghz_channels[] = { | |
26 | CHAN2G(1, 2412, 0), | |
27 | CHAN2G(2, 2417, 0), | |
28 | CHAN2G(3, 2422, 0), | |
29 | CHAN2G(4, 2427, 0), | |
30 | CHAN2G(5, 2432, 0), | |
31 | CHAN2G(6, 2437, 0), | |
32 | CHAN2G(7, 2442, 0), | |
33 | CHAN2G(8, 2447, 0), | |
34 | CHAN2G(9, 2452, 0), | |
35 | CHAN2G(10, 2457, 0), | |
36 | CHAN2G(11, 2462, 0), | |
37 | CHAN2G(12, 2467, 0), | |
38 | CHAN2G(13, 2472, 0), | |
39 | CHAN2G(14, 2484, 0), | |
40 | }; | |
41 | ||
42 | #define RATETAB_ENT(_rate, _rateid, _flags) { \ | |
43 | .bitrate = (_rate), \ | |
44 | .hw_value = (_rateid), \ | |
45 | .flags = (_flags), \ | |
46 | } | |
47 | ||
48 | ||
49 | static struct ieee80211_rate lbs_rates[] = { | |
50 | RATETAB_ENT(10, 0x1, 0), | |
51 | RATETAB_ENT(20, 0x2, 0), | |
52 | RATETAB_ENT(55, 0x4, 0), | |
53 | RATETAB_ENT(110, 0x8, 0), | |
54 | RATETAB_ENT(60, 0x10, 0), | |
55 | RATETAB_ENT(90, 0x20, 0), | |
56 | RATETAB_ENT(120, 0x40, 0), | |
57 | RATETAB_ENT(180, 0x80, 0), | |
58 | RATETAB_ENT(240, 0x100, 0), | |
59 | RATETAB_ENT(360, 0x200, 0), | |
60 | RATETAB_ENT(480, 0x400, 0), | |
61 | RATETAB_ENT(540, 0x800, 0), | |
62 | }; | |
63 | ||
64 | static struct ieee80211_supported_band lbs_band_2ghz = { | |
65 | .channels = lbs_2ghz_channels, | |
66 | .n_channels = ARRAY_SIZE(lbs_2ghz_channels), | |
67 | .bitrates = lbs_rates, | |
68 | .n_bitrates = ARRAY_SIZE(lbs_rates), | |
69 | }; | |
70 | ||
71 | ||
72 | static const u32 cipher_suites[] = { | |
73 | WLAN_CIPHER_SUITE_WEP40, | |
74 | WLAN_CIPHER_SUITE_WEP104, | |
75 | WLAN_CIPHER_SUITE_TKIP, | |
76 | WLAN_CIPHER_SUITE_CCMP, | |
77 | }; | |
78 | ||
79 | ||
80 | ||
81 | static int lbs_cfg_set_channel(struct wiphy *wiphy, | |
82 | struct ieee80211_channel *chan, | |
83 | enum nl80211_channel_type channel_type) | |
84 | { | |
85 | struct lbs_private *priv = wiphy_priv(wiphy); | |
86 | int ret = -ENOTSUPP; | |
87 | ||
88 | lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d", chan->center_freq, channel_type); | |
89 | ||
90 | if (channel_type != NL80211_CHAN_NO_HT) | |
91 | goto out; | |
92 | ||
93 | ret = lbs_set_channel(priv, chan->hw_value); | |
94 | ||
95 | out: | |
96 | lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); | |
97 | return ret; | |
98 | } | |
99 | ||
100 | ||
101 | ||
102 | ||
103 | static struct cfg80211_ops lbs_cfg80211_ops = { | |
104 | .set_channel = lbs_cfg_set_channel, | |
105 | }; | |
106 | ||
107 | ||
108 | /* | |
109 | * At this time lbs_private *priv doesn't even exist, so we just allocate | |
110 | * memory and don't initialize the wiphy further. This is postponed until we | |
111 | * can talk to the firmware and happens at registration time in | |
112 | * lbs_cfg_wiphy_register(). | |
113 | */ | |
114 | struct wireless_dev *lbs_cfg_alloc(struct device *dev) | |
115 | { | |
116 | int ret = 0; | |
117 | struct wireless_dev *wdev; | |
118 | ||
119 | lbs_deb_enter(LBS_DEB_CFG80211); | |
120 | ||
121 | wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); | |
122 | if (!wdev) { | |
123 | dev_err(dev, "cannot allocate wireless device\n"); | |
124 | return ERR_PTR(-ENOMEM); | |
125 | } | |
126 | ||
127 | wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private)); | |
128 | if (!wdev->wiphy) { | |
129 | dev_err(dev, "cannot allocate wiphy\n"); | |
130 | ret = -ENOMEM; | |
131 | goto err_wiphy_new; | |
132 | } | |
133 | ||
134 | lbs_deb_leave(LBS_DEB_CFG80211); | |
135 | return wdev; | |
136 | ||
137 | err_wiphy_new: | |
138 | kfree(wdev); | |
139 | lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); | |
140 | return ERR_PTR(ret); | |
141 | } | |
142 | ||
143 | ||
144 | /* | |
145 | * This function get's called after lbs_setup_firmware() determined the | |
146 | * firmware capabities. So we can setup the wiphy according to our | |
147 | * hardware/firmware. | |
148 | */ | |
149 | int lbs_cfg_register(struct lbs_private *priv) | |
150 | { | |
151 | struct wireless_dev *wdev = priv->wdev; | |
152 | int ret; | |
153 | ||
154 | lbs_deb_enter(LBS_DEB_CFG80211); | |
155 | ||
156 | wdev->wiphy->max_scan_ssids = 1; | |
157 | wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
158 | ||
159 | /* TODO: BIT(NL80211_IFTYPE_ADHOC); */ | |
160 | wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); | |
161 | ||
162 | /* TODO: honor priv->regioncode */ | |
163 | wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz; | |
164 | ||
165 | /* | |
166 | * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have | |
167 | * never seen a firmware without WPA | |
168 | */ | |
169 | wdev->wiphy->cipher_suites = cipher_suites; | |
170 | wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
171 | ||
172 | ret = wiphy_register(wdev->wiphy); | |
173 | if (ret < 0) | |
174 | lbs_pr_err("cannot register wiphy device\n"); | |
175 | ||
176 | ret = register_netdev(priv->dev); | |
177 | if (ret) | |
178 | lbs_pr_err("cannot register network device\n"); | |
179 | ||
180 | lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); | |
181 | return ret; | |
182 | } | |
183 | ||
184 | ||
185 | void lbs_cfg_free(struct lbs_private *priv) | |
186 | { | |
187 | struct wireless_dev *wdev = priv->wdev; | |
188 | ||
189 | lbs_deb_enter(LBS_DEB_CFG80211); | |
190 | ||
191 | if (!wdev) | |
192 | return; | |
193 | ||
194 | if (wdev->wiphy) { | |
195 | wiphy_unregister(wdev->wiphy); | |
196 | wiphy_free(wdev->wiphy); | |
197 | } | |
198 | kfree(wdev); | |
199 | } |