net/ieee80211/softmac/ieee80211softmac_priv.h

   1 /*
   2  * Internal softmac API definitions.
   3  *
   4  * Copyright (c) 2005, 2006 Johannes Berg <johannes@sipsolutions.net>
   5  *                          Joseph Jezak <josejx@gentoo.org>
   6  *                          Larry Finger <Larry.Finger@lwfinger.net>
   7  *                          Danny van Dyk <kugelfang@gentoo.org>
   8  *                          Michael Buesch <mbuesch@freenet.de>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  22  *
  23  * The full GNU General Public License is included in this distribution in the
  24  * file called COPYING.
  25  */
  26
  27 #ifndef IEEE80211SOFTMAC_PRIV_H_
  28 #define IEEE80211SOFTMAC_PRIV_H_
  29
  30 #include <net/ieee80211softmac.h>
  31 #include <net/ieee80211softmac_wx.h>
  32 #include <linux/kernel.h>
  33 #include <linux/stringify.h>
  34
  35
  36 #define PFX                             "SoftMAC: "
  37
  38 #ifdef assert
  39 # undef assert
  40 #endif
  41 #ifdef CONFIG_IEEE80211_SOFTMAC_DEBUG
  42 #define assert(expr) \
  43         do {                                                                            \
  44                 if (unlikely(!(expr))) {                                                \
  45                 printkl(KERN_ERR PFX "ASSERTION FAILED (%s) at: %s:%d:%s()\n", #expr,   \
  46                         __FILE__, __LINE__, __FUNCTION__);                              \
  47                 }                                                                       \
  48         } while (0)
  49 #else
  50 #define assert(expr) do {} while (0)
  51 #endif
  52
  53 /* rate limited printk(). */
  54 #ifdef printkl
  55 # undef printkl
  56 #endif
  57 #define printkl(f, x...)  do { if (printk_ratelimit()) printk(f ,##x); } while (0)
  58 /* rate limited printk() for debugging */
  59 #ifdef dprintkl
  60 # undef dprintkl
  61 #endif
  62 #ifdef CONFIG_IEEE80211_SOFTMAC_DEBUG
  63 # define dprintkl               printkl
  64 #else
  65 # define dprintkl(f, x...)      do { /* nothing */ } while (0)
  66 #endif
  67
  68 /* debugging printk() */
  69 #ifdef dprintk
  70 # undef dprintk
  71 #endif
  72 #ifdef CONFIG_IEEE80211_SOFTMAC_DEBUG
  73 # define dprintk(f, x...)  do { printk(f ,##x); } while (0)
  74 #else
  75 # define dprintk(f, x...)  do { /* nothing */ } while (0)
  76 #endif
  77
  78 /* private definitions and prototypes */
  79
  80 /*** prototypes from _scan.c */
  81 void ieee80211softmac_scan(void *sm);
  82 /* for internal use if scanning is needed */
  83 int ieee80211softmac_start_scan(struct ieee80211softmac_device *mac);
  84 void ieee80211softmac_stop_scan(struct ieee80211softmac_device *mac);
  85 void ieee80211softmac_wait_for_scan(struct ieee80211softmac_device *mac);
  86
  87 /* for use by _module.c to assign to the callbacks */
  88 int ieee80211softmac_start_scan_implementation(struct net_device *dev);
  89 void ieee80211softmac_stop_scan_implementation(struct net_device *dev);
  90 void ieee80211softmac_wait_for_scan_implementation(struct net_device *dev);
  91
  92 /*** Network prototypes from _module.c */
  93 struct ieee80211softmac_network * ieee80211softmac_create_network(
  94         struct ieee80211softmac_device *mac, struct ieee80211_network *net);
  95 void ieee80211softmac_add_network_locked(struct ieee80211softmac_device *mac,
  96         struct ieee80211softmac_network *net);
  97 void ieee80211softmac_add_network(struct ieee80211softmac_device *mac,
  98         struct ieee80211softmac_network *net);
  99 void ieee80211softmac_del_network_locked(struct ieee80211softmac_device *mac,
 100         struct ieee80211softmac_network *net);
 101 void ieee80211softmac_del_network(struct ieee80211softmac_device *mac,
 102         struct ieee80211softmac_network *net);
 103 struct ieee80211softmac_network * ieee80211softmac_get_network_by_bssid_locked(
 104         struct ieee80211softmac_device *mac, u8 *ea);
 105 struct ieee80211softmac_network * ieee80211softmac_get_network_by_bssid(
 106         struct ieee80211softmac_device *mac, u8 *ea);
 107 struct ieee80211softmac_network * ieee80211softmac_get_network_by_ssid_locked(
 108         struct ieee80211softmac_device *mac, u8 *ssid, u8 ssid_len);
 109 struct ieee80211softmac_network * ieee80211softmac_get_network_by_ssid(
 110         struct ieee80211softmac_device *mac, u8 *ssid, u8 ssid_len);
 111 struct ieee80211softmac_network *
 112 ieee80211softmac_get_network_by_essid_locked(struct ieee80211softmac_device *mac,
 113         struct ieee80211softmac_essid *essid);
 114 struct ieee80211softmac_network *
 115 ieee80211softmac_get_network_by_essid(struct ieee80211softmac_device *mac,
 116         struct ieee80211softmac_essid *essid);
 117
 118 /* Rates related */
 119 int ieee80211softmac_ratesinfo_rate_supported(struct ieee80211softmac_ratesinfo *ri, u8 rate);
 120 u8 ieee80211softmac_lower_rate_delta(struct ieee80211softmac_device *mac, u8 rate, int delta);
 121 void ieee80211softmac_init_txrates(struct ieee80211softmac_device *mac);
 122 void ieee80211softmac_recalc_txrates(struct ieee80211softmac_device *mac);
 123 static inline u8 lower_rate(struct ieee80211softmac_device *mac, u8 rate) {
 124         return ieee80211softmac_lower_rate_delta(mac, rate, 1);
 125 }
 126
 127 static inline u8 get_fallback_rate(struct ieee80211softmac_device *mac, u8 rate)
 128 {
 129         return ieee80211softmac_lower_rate_delta(mac, rate, 2);
 130 }
 131
 132
 133 /*** prototypes from _io.c */
 134 int ieee80211softmac_send_mgt_frame(struct ieee80211softmac_device *mac,
 135         void* ptrarg, u32 type, u32 arg);
 136
 137 /*** prototypes from _auth.c */
 138 /* do these have to go into the public header? */
 139 int ieee80211softmac_auth_req(struct ieee80211softmac_device *mac, struct ieee80211softmac_network *net);
 140 int ieee80211softmac_deauth_req(struct ieee80211softmac_device *mac, struct ieee80211softmac_network *net, int reason);
 141
 142 /* for use by _module.c to assign to the callbacks */
 143 int ieee80211softmac_auth_resp(struct net_device *dev, struct ieee80211_auth *auth);
 144 int ieee80211softmac_deauth_resp(struct net_device *dev, struct ieee80211_deauth *deauth);
 145
 146 /*** prototypes from _assoc.c */
 147 void ieee80211softmac_assoc_work(void *d);
 148 int ieee80211softmac_handle_assoc_response(struct net_device * dev,
 149                                            struct ieee80211_assoc_response * resp,
 150                                            struct ieee80211_network * network);
 151 int ieee80211softmac_handle_disassoc(struct net_device * dev,
 152                                      struct ieee80211_disassoc * disassoc);
 153 int ieee80211softmac_handle_reassoc_req(struct net_device * dev,
 154                                         struct ieee80211_reassoc_request * reassoc);
 155 void ieee80211softmac_assoc_timeout(void *d);
 156 void ieee80211softmac_send_disassoc_req(struct ieee80211softmac_device *mac, u16 reason);
 157 void ieee80211softmac_disassoc(struct ieee80211softmac_device *mac);
 158
 159 /* some helper functions */
 160 static inline int ieee80211softmac_scan_handlers_check_self(struct ieee80211softmac_device *sm)
 161 {
 162         return (sm->start_scan == ieee80211softmac_start_scan_implementation) &&
 163                 (sm->stop_scan == ieee80211softmac_stop_scan_implementation) &&
 164                 (sm->wait_for_scan == ieee80211softmac_wait_for_scan_implementation);
 165 }
 166
 167 static inline int ieee80211softmac_scan_sanity_check(struct ieee80211softmac_device *sm)
 168 {
 169         return ((sm->start_scan != ieee80211softmac_start_scan_implementation) &&
 170                 (sm->stop_scan != ieee80211softmac_stop_scan_implementation) &&
 171                 (sm->wait_for_scan != ieee80211softmac_wait_for_scan_implementation)
 172                 ) || ieee80211softmac_scan_handlers_check_self(sm);
 173 }
 174
 175 #define IEEE80211SOFTMAC_PROBE_DELAY            HZ/50
 176 #define IEEE80211SOFTMAC_WORKQUEUE_NAME_LEN     (17 + IFNAMSIZ)
 177
 178 struct ieee80211softmac_network {
 179         struct list_head                list;   /* List */
 180         /* Network information copied from ieee80211_network */
 181         u8 bssid[ETH_ALEN];
 182         u8 channel;
 183         struct ieee80211softmac_essid essid;
 184
 185         struct ieee80211softmac_ratesinfo supported_rates;
 186
 187         /* SoftMAC specific */
 188         u16 authenticating:1,                   /* Status Flags */
 189             authenticated:1,
 190             auth_desynced_once:1;
 191
 192         u16 capabilities;                       /* Capabilities bitfield */
 193         u8 challenge_len;                       /* Auth Challenge length */
 194         char *challenge;                        /* Challenge Text */
 195 };
 196
 197 /* structure used to keep track of networks we're auth'ing to */
 198 struct ieee80211softmac_auth_queue_item {
 199         struct list_head                list;   /* List head */
 200         struct ieee80211softmac_network *net;   /* Network to auth */
 201         struct ieee80211softmac_device  *mac;   /* SoftMAC device */
 202         u8 retry;                               /* Retry limit */
 203         u8 state;                               /* Auth State */
 204         struct work_struct              work;   /* Work queue */
 205 };
 206
 207 /* scanning information */
 208 struct ieee80211softmac_scaninfo {
 209         u8 current_channel_idx,
 210            number_channels;
 211         struct ieee80211_channel *channels;
 212         u8 started:1,
 213            stop:1;
 214         u8 skip_flags;
 215         struct completion finished;
 216         struct work_struct softmac_scan;
 217 };
 218
 219 /* private event struct */
 220 struct ieee80211softmac_event {
 221         struct list_head list;
 222         int event_type;
 223         void *event_context;
 224         struct work_struct work;
 225         notify_function_ptr fun;
 226         void *context;
 227         struct ieee80211softmac_device *mac;
 228 };
 229
 230 void ieee80211softmac_call_events(struct ieee80211softmac_device *mac, int event, void *event_context);
 231 void ieee80211softmac_call_events_locked(struct ieee80211softmac_device *mac, int event, void *event_context);
 232 int ieee80211softmac_notify_internal(struct ieee80211softmac_device *mac,
 233         int event, void *event_context, notify_function_ptr fun, void *context, gfp_t gfp_mask);
 234
 235 #endif /* IEEE80211SOFTMAC_PRIV_H_ */