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1 | /******************************************************************************* | |
2 | ||
3 | Copyright(c) 2004 Intel Corporation. All rights reserved. | |
4 | ||
5 | Portions of this file are based on the WEP enablement code provided by the | |
6 | Host AP project hostap-drivers v0.1.3 | |
7 | Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen | |
8 | <jkmaline@cc.hut.fi> | |
9 | Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify it | |
12 | under the terms of version 2 of the GNU General Public License as | |
13 | published by the Free Software Foundation. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, but WITHOUT | |
16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
18 | more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License along with | |
21 | this program; if not, write to the Free Software Foundation, Inc., 59 | |
22 | Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
23 | ||
24 | The full GNU General Public License is included in this distribution in the | |
25 | file called LICENSE. | |
26 | ||
27 | Contact Information: | |
28 | James P. Ketrenos <ipw2100-admin@linux.intel.com> | |
29 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | ||
31 | *******************************************************************************/ | |
32 | ||
33 | #include <linux/compiler.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/if_arp.h> | |
36 | #include <linux/in6.h> | |
37 | #include <linux/in.h> | |
38 | #include <linux/ip.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/netdevice.h> | |
42 | #include <linux/pci.h> | |
43 | #include <linux/proc_fs.h> | |
44 | #include <linux/skbuff.h> | |
45 | #include <linux/slab.h> | |
46 | #include <linux/tcp.h> | |
47 | #include <linux/types.h> | |
48 | #include <linux/wireless.h> | |
49 | #include <linux/etherdevice.h> | |
50 | #include <linux/uaccess.h> | |
51 | #include <net/arp.h> | |
52 | ||
53 | #include "rtllib.h" | |
54 | ||
55 | ||
56 | u32 rt_global_debug_component = COMP_ERR; | |
57 | EXPORT_SYMBOL(rt_global_debug_component); | |
58 | ||
59 | ||
60 | ||
61 | static inline int rtllib_networks_allocate(struct rtllib_device *ieee) | |
62 | { | |
63 | if (ieee->networks) | |
64 | return 0; | |
65 | ||
66 | ieee->networks = kzalloc( | |
67 | MAX_NETWORK_COUNT * sizeof(struct rtllib_network), | |
68 | GFP_KERNEL); | |
69 | if (!ieee->networks) | |
70 | return -ENOMEM; | |
71 | ||
72 | return 0; | |
73 | } | |
74 | ||
75 | static inline void rtllib_networks_free(struct rtllib_device *ieee) | |
76 | { | |
77 | if (!ieee->networks) | |
78 | return; | |
79 | kfree(ieee->networks); | |
80 | ieee->networks = NULL; | |
81 | } | |
82 | ||
83 | static inline void rtllib_networks_initialize(struct rtllib_device *ieee) | |
84 | { | |
85 | int i; | |
86 | ||
87 | INIT_LIST_HEAD(&ieee->network_free_list); | |
88 | INIT_LIST_HEAD(&ieee->network_list); | |
89 | for (i = 0; i < MAX_NETWORK_COUNT; i++) | |
90 | list_add_tail(&ieee->networks[i].list, | |
91 | &ieee->network_free_list); | |
92 | } | |
93 | ||
94 | struct net_device *alloc_rtllib(int sizeof_priv) | |
95 | { | |
96 | struct rtllib_device *ieee = NULL; | |
97 | struct net_device *dev; | |
98 | int i, err; | |
99 | ||
100 | pr_debug("rtllib: Initializing...\n"); | |
101 | ||
102 | dev = alloc_etherdev(sizeof(struct rtllib_device) + sizeof_priv); | |
103 | if (!dev) { | |
104 | pr_err("Unable to allocate net_device.\n"); | |
105 | return NULL; | |
106 | } | |
107 | ieee = (struct rtllib_device *)netdev_priv_rsl(dev); | |
108 | memset(ieee, 0, sizeof(struct rtllib_device)+sizeof_priv); | |
109 | ieee->dev = dev; | |
110 | ||
111 | err = rtllib_networks_allocate(ieee); | |
112 | if (err) { | |
113 | pr_err("Unable to allocate beacon storage: %d\n", err); | |
114 | goto failed; | |
115 | } | |
116 | rtllib_networks_initialize(ieee); | |
117 | ||
118 | ||
119 | /* Default fragmentation threshold is maximum payload size */ | |
120 | ieee->fts = DEFAULT_FTS; | |
121 | ieee->scan_age = DEFAULT_MAX_SCAN_AGE; | |
122 | ieee->open_wep = 1; | |
123 | ||
124 | /* Default to enabling full open WEP with host based encrypt/decrypt */ | |
125 | ieee->host_encrypt = 1; | |
126 | ieee->host_decrypt = 1; | |
127 | ieee->ieee802_1x = 1; /* Default to supporting 802.1x */ | |
128 | ||
129 | ieee->rtllib_ap_sec_type = rtllib_ap_sec_type; | |
130 | ||
131 | spin_lock_init(&ieee->lock); | |
132 | spin_lock_init(&ieee->wpax_suitlist_lock); | |
133 | spin_lock_init(&ieee->reorder_spinlock); | |
134 | atomic_set(&(ieee->atm_swbw), 0); | |
135 | ||
136 | /* SAM FIXME */ | |
137 | lib80211_crypt_info_init(&ieee->crypt_info, "RTLLIB", &ieee->lock); | |
138 | ||
139 | ieee->wpa_enabled = 0; | |
140 | ieee->tkip_countermeasures = 0; | |
141 | ieee->drop_unencrypted = 0; | |
142 | ieee->privacy_invoked = 0; | |
143 | ieee->ieee802_1x = 1; | |
144 | ieee->raw_tx = 0; | |
145 | ieee->hwsec_active = 0; | |
146 | ||
147 | memset(ieee->swcamtable, 0, sizeof(struct sw_cam_table) * 32); | |
148 | rtllib_softmac_init(ieee); | |
149 | ||
150 | ieee->pHTInfo = kzalloc(sizeof(struct rt_hi_throughput), GFP_KERNEL); | |
151 | if (ieee->pHTInfo == NULL) | |
152 | return NULL; | |
153 | ||
154 | HTUpdateDefaultSetting(ieee); | |
155 | HTInitializeHTInfo(ieee); | |
156 | TSInitialize(ieee); | |
157 | for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++) | |
158 | INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]); | |
159 | ||
160 | for (i = 0; i < 17; i++) { | |
161 | ieee->last_rxseq_num[i] = -1; | |
162 | ieee->last_rxfrag_num[i] = -1; | |
163 | ieee->last_packet_time[i] = 0; | |
164 | } | |
165 | ||
166 | return dev; | |
167 | ||
168 | failed: | |
169 | free_netdev(dev); | |
170 | return NULL; | |
171 | } | |
172 | EXPORT_SYMBOL(alloc_rtllib); | |
173 | ||
174 | void free_rtllib(struct net_device *dev) | |
175 | { | |
176 | struct rtllib_device *ieee = (struct rtllib_device *) | |
177 | netdev_priv_rsl(dev); | |
178 | ||
179 | kfree(ieee->pHTInfo); | |
180 | ieee->pHTInfo = NULL; | |
181 | rtllib_softmac_free(ieee); | |
182 | ||
183 | lib80211_crypt_info_free(&ieee->crypt_info); | |
184 | ||
185 | rtllib_networks_free(ieee); | |
186 | free_netdev(dev); | |
187 | } | |
188 | EXPORT_SYMBOL(free_rtllib); | |
189 | ||
190 | static int __init rtllib_init(void) | |
191 | { | |
192 | return 0; | |
193 | } | |
194 | ||
195 | static void __exit rtllib_exit(void) | |
196 | { | |
197 | } | |
198 | ||
199 | module_init(rtllib_init); | |
200 | module_exit(rtllib_exit); | |
201 | ||
202 | MODULE_LICENSE("GPL"); |