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 static inline int rtllib_networks_allocate(struct rtllib_device *ieee) 38 { 39 if (ieee->networks) 40 return 0; 41 42 ieee->networks = kcalloc(MAX_NETWORK_COUNT, 43 sizeof(struct rtllib_network), GFP_KERNEL); 44 if (!ieee->networks) 45 return -ENOMEM; 46 47 return 0; 48 } 49 50 static inline void rtllib_networks_free(struct rtllib_device *ieee) 51 { 52 if (!ieee->networks) 53 return; 54 kfree(ieee->networks); 55 ieee->networks = NULL; 56 } 57 58 static inline void rtllib_networks_initialize(struct rtllib_device *ieee) 59 { 60 int i; 61 62 INIT_LIST_HEAD(&ieee->network_free_list); 63 INIT_LIST_HEAD(&ieee->network_list); 64 for (i = 0; i < MAX_NETWORK_COUNT; i++) 65 list_add_tail(&ieee->networks[i].list, 66 &ieee->network_free_list); 67 } 68 69 struct net_device *alloc_rtllib(int sizeof_priv) 70 { 71 struct rtllib_device *ieee = NULL; 72 struct net_device *dev; 73 int i, err; 74 75 pr_debug("rtllib: Initializing...\n"); 76 77 dev = alloc_etherdev(sizeof(struct rtllib_device) + sizeof_priv); 78 if (!dev) { 79 pr_err("Unable to allocate net_device.\n"); 80 return NULL; 81 } 82 ieee = (struct rtllib_device *)netdev_priv_rsl(dev); 83 ieee->dev = dev; 84 85 err = rtllib_networks_allocate(ieee); 86 if (err) { 87 pr_err("Unable to allocate beacon storage: %d\n", err); 88 goto free_netdev; 89 } 90 rtllib_networks_initialize(ieee); 91 92 /* Default fragmentation threshold is maximum payload size */ 93 ieee->fts = DEFAULT_FTS; 94 ieee->scan_age = DEFAULT_MAX_SCAN_AGE; 95 ieee->open_wep = 1; 96 97 ieee->ieee802_1x = 1; /* Default to supporting 802.1x */ 98 99 ieee->rtllib_ap_sec_type = rtllib_ap_sec_type; 100 101 spin_lock_init(&ieee->lock); 102 spin_lock_init(&ieee->wpax_suitlist_lock); 103 spin_lock_init(&ieee->reorder_spinlock); 104 atomic_set(&ieee->atm_swbw, 0); 105 106 /* SAM FIXME */ 107 lib80211_crypt_info_init(&ieee->crypt_info, "RTLLIB", &ieee->lock); 108 109 ieee->wpa_enabled = 0; 110 ieee->tkip_countermeasures = 0; 111 ieee->drop_unencrypted = 0; 112 ieee->privacy_invoked = 0; 113 ieee->ieee802_1x = 1; 114 ieee->hwsec_active = 0; 115 116 memset(ieee->swcamtable, 0, sizeof(struct sw_cam_table) * 32); 117 err = rtllib_softmac_init(ieee); 118 if (err) 119 goto free_crypt_info; 120 121 ieee->ht_info = kzalloc(sizeof(struct rt_hi_throughput), GFP_KERNEL); 122 if (!ieee->ht_info) 123 goto free_softmac; 124 125 ht_update_default_setting(ieee); 126 HTInitializeHTInfo(ieee); 127 rtllib_ts_init(ieee); 128 for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++) 129 INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]); 130 131 for (i = 0; i < 17; i++) { 132 ieee->last_rxseq_num[i] = -1; 133 ieee->last_rxfrag_num[i] = -1; 134 ieee->last_packet_time[i] = 0; 135 } 136 137 return dev; 138 139 free_softmac: 140 rtllib_softmac_free(ieee); 141 free_crypt_info: 142 lib80211_crypt_info_free(&ieee->crypt_info); 143 rtllib_networks_free(ieee); 144 free_netdev: 145 free_netdev(dev); 146 147 return NULL; 148 } 149 EXPORT_SYMBOL(alloc_rtllib); 150 151 void free_rtllib(struct net_device *dev) 152 { 153 struct rtllib_device *ieee = (struct rtllib_device *) 154 netdev_priv_rsl(dev); 155 156 kfree(ieee->ht_info); 157 rtllib_softmac_free(ieee); 158 159 lib80211_crypt_info_free(&ieee->crypt_info); 160 161 rtllib_networks_free(ieee); 162 free_netdev(dev); 163 } 164 EXPORT_SYMBOL(free_rtllib); 165 166 static int __init rtllib_init(void) 167 { 168 return 0; 169 } 170 171 static void __exit rtllib_exit(void) 172 { 173 } 174 175 module_init(rtllib_init); 176 module_exit(rtllib_exit); 177 178 MODULE_LICENSE("GPL"); 179