1 // SPDX-License-Identifier: GPL-2.0
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 * Contact Information:
12 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
13 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
14 */
15
16 #include <linux/compiler.h>
17 #include <linux/errno.h>
18 #include <linux/if_arp.h>
19 #include <linux/in6.h>
20 #include <linux/in.h>
21 #include <linux/ip.h>
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/netdevice.h>
25 #include <linux/pci.h>
26 #include <linux/proc_fs.h>
27 #include <linux/skbuff.h>
28 #include <linux/slab.h>
29 #include <linux/tcp.h>
30 #include <linux/types.h>
31 #include <linux/wireless.h>
32 #include <linux/etherdevice.h>
33 #include <linux/uaccess.h>
34 #include <net/arp.h>
35 #include "rtllib.h"
36
37 u32 rt_global_debug_component = COMP_ERR;
38 EXPORT_SYMBOL(rt_global_debug_component);
39
rtllib_networks_allocate(struct rtllib_device * ieee)40 static inline int rtllib_networks_allocate(struct rtllib_device *ieee)
41 {
42 if (ieee->networks)
43 return 0;
44
45 ieee->networks = kcalloc(MAX_NETWORK_COUNT,
46 sizeof(struct rtllib_network), GFP_KERNEL);
47 if (!ieee->networks)
48 return -ENOMEM;
49
50 return 0;
51 }
52
rtllib_networks_free(struct rtllib_device * ieee)53 static inline void rtllib_networks_free(struct rtllib_device *ieee)
54 {
55 if (!ieee->networks)
56 return;
57 kfree(ieee->networks);
58 ieee->networks = NULL;
59 }
60
rtllib_networks_initialize(struct rtllib_device * ieee)61 static inline void rtllib_networks_initialize(struct rtllib_device *ieee)
62 {
63 int i;
64
65 INIT_LIST_HEAD(&ieee->network_free_list);
66 INIT_LIST_HEAD(&ieee->network_list);
67 for (i = 0; i < MAX_NETWORK_COUNT; i++)
68 list_add_tail(&ieee->networks[i].list,
69 &ieee->network_free_list);
70 }
71
alloc_rtllib(int sizeof_priv)72 struct net_device *alloc_rtllib(int sizeof_priv)
73 {
74 struct rtllib_device *ieee = NULL;
75 struct net_device *dev;
76 int i, err;
77
78 pr_debug("rtllib: Initializing...\n");
79
80 dev = alloc_etherdev(sizeof(struct rtllib_device) + sizeof_priv);
81 if (!dev) {
82 pr_err("Unable to allocate net_device.\n");
83 return NULL;
84 }
85 ieee = (struct rtllib_device *)netdev_priv_rsl(dev);
86 ieee->dev = dev;
87
88 err = rtllib_networks_allocate(ieee);
89 if (err) {
90 pr_err("Unable to allocate beacon storage: %d\n", err);
91 goto free_netdev;
92 }
93 rtllib_networks_initialize(ieee);
94
95 /* Default fragmentation threshold is maximum payload size */
96 ieee->fts = DEFAULT_FTS;
97 ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
98 ieee->open_wep = 1;
99
100 /* Default to enabling full open WEP with host based encrypt/decrypt */
101 ieee->host_encrypt = 1;
102 ieee->host_decrypt = 1;
103 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
104
105 ieee->rtllib_ap_sec_type = rtllib_ap_sec_type;
106
107 spin_lock_init(&ieee->lock);
108 spin_lock_init(&ieee->wpax_suitlist_lock);
109 spin_lock_init(&ieee->reorder_spinlock);
110 atomic_set(&(ieee->atm_swbw), 0);
111
112 /* SAM FIXME */
113 lib80211_crypt_info_init(&ieee->crypt_info, "RTLLIB", &ieee->lock);
114
115 ieee->wpa_enabled = 0;
116 ieee->tkip_countermeasures = 0;
117 ieee->drop_unencrypted = 0;
118 ieee->privacy_invoked = 0;
119 ieee->ieee802_1x = 1;
120 ieee->raw_tx = 0;
121 ieee->hwsec_active = 0;
122
123 memset(ieee->swcamtable, 0, sizeof(struct sw_cam_table) * 32);
124 err = rtllib_softmac_init(ieee);
125 if (err)
126 goto free_crypt_info;
127
128 ieee->pHTInfo = kzalloc(sizeof(struct rt_hi_throughput), GFP_KERNEL);
129 if (!ieee->pHTInfo)
130 goto free_softmac;
131
132 HTUpdateDefaultSetting(ieee);
133 HTInitializeHTInfo(ieee);
134 TSInitialize(ieee);
135 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
136 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
137
138 for (i = 0; i < 17; i++) {
139 ieee->last_rxseq_num[i] = -1;
140 ieee->last_rxfrag_num[i] = -1;
141 ieee->last_packet_time[i] = 0;
142 }
143
144 return dev;
145
146 free_softmac:
147 rtllib_softmac_free(ieee);
148 free_crypt_info:
149 lib80211_crypt_info_free(&ieee->crypt_info);
150 rtllib_networks_free(ieee);
151 free_netdev:
152 free_netdev(dev);
153
154 return NULL;
155 }
156 EXPORT_SYMBOL(alloc_rtllib);
157
free_rtllib(struct net_device * dev)158 void free_rtllib(struct net_device *dev)
159 {
160 struct rtllib_device *ieee = (struct rtllib_device *)
161 netdev_priv_rsl(dev);
162
163 kfree(ieee->pHTInfo);
164 ieee->pHTInfo = NULL;
165 rtllib_softmac_free(ieee);
166
167 lib80211_crypt_info_free(&ieee->crypt_info);
168
169 rtllib_networks_free(ieee);
170 free_netdev(dev);
171 }
172 EXPORT_SYMBOL(free_rtllib);
173
rtllib_init(void)174 static int __init rtllib_init(void)
175 {
176 return 0;
177 }
178
rtllib_exit(void)179 static void __exit rtllib_exit(void)
180 {
181 }
182
183 module_init(rtllib_init);
184 module_exit(rtllib_exit);
185
186 MODULE_LICENSE("GPL");
187