sys/net80211/ieee80211_action.c

   1 /*-
   2  * Copyright (c) 2009 Sam Leffler, Errno Consulting
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include <sys/cdefs.h>
  27 #ifdef __FreeBSD__
  28 __FBSDID("$FreeBSD$");
  29 #endif
  30
  31 /*
  32  * IEEE 802.11 send/recv action frame support.
  33  */
  34
  35 #include "opt_inet.h"
  36 #include "opt_wlan.h"
  37
  38 #include <sys/param.h>
  39 #include <sys/kernel.h>
  40 #include <sys/systm.h>
  41
  42 #include <sys/socket.h>
  43
  44 #include <net/if.h>
  45 #include <net/if_media.h>
  46 #include <net/ethernet.h>
  47
  48 #include <net80211/ieee80211_var.h>
  49 #include <net80211/ieee80211_action.h>
  50 #include <net80211/ieee80211_mesh.h>
  51
  52 static int
  53 send_inval(struct ieee80211_node *ni, int cat, int act, void *sa)
  54 {
  55         return EINVAL;
  56 }
  57
  58 static ieee80211_send_action_func *ba_send_action[8] = {
  59         send_inval, send_inval, send_inval, send_inval,
  60         send_inval, send_inval, send_inval, send_inval,
  61 };
  62 static ieee80211_send_action_func *ht_send_action[8] = {
  63         send_inval, send_inval, send_inval, send_inval,
  64         send_inval, send_inval, send_inval, send_inval,
  65 };
  66 static ieee80211_send_action_func *meshpl_send_action[8] = {
  67         send_inval, send_inval, send_inval, send_inval,
  68         send_inval, send_inval, send_inval, send_inval,
  69 };
  70 static ieee80211_send_action_func *meshlm_send_action[4] = {
  71         send_inval, send_inval, send_inval, send_inval,
  72 };
  73 static ieee80211_send_action_func *hwmp_send_action[8] = {
  74         send_inval, send_inval, send_inval, send_inval,
  75         send_inval, send_inval, send_inval, send_inval,
  76 };
  77 static ieee80211_send_action_func *vendor_send_action[8] = {
  78         send_inval, send_inval, send_inval, send_inval,
  79         send_inval, send_inval, send_inval, send_inval,
  80 };
  81
  82 int
  83 ieee80211_send_action_register(int cat, int act, ieee80211_send_action_func *f)
  84 {
  85 #define N(a)    (sizeof(a) / sizeof(a[0]))
  86         switch (cat) {
  87         case IEEE80211_ACTION_CAT_BA:
  88                 if (act >= N(ba_send_action))
  89                         break;
  90                 ba_send_action[act] = f;
  91                 return 0;
  92         case IEEE80211_ACTION_CAT_HT:
  93                 if (act >= N(ht_send_action))
  94                         break;
  95                 ht_send_action[act] = f;
  96                 return 0;
  97         case IEEE80211_ACTION_CAT_MESHPEERING:
  98                 if (act >= N(meshpl_send_action))
  99                         break;
 100                 meshpl_send_action[act] = f;
 101                 return 0;
 102         case IEEE80211_ACTION_CAT_MESHLMETRIC:
 103                 if (act >= N(meshlm_send_action))
 104                         break;
 105                 meshlm_send_action[act] = f;
 106                 return 0;
 107         case IEEE80211_ACTION_CAT_MESHPATH:
 108                 if (act >= N(hwmp_send_action))
 109                         break;
 110                 hwmp_send_action[act] = f;
 111                 return 0;
 112         case IEEE80211_ACTION_CAT_VENDOR:
 113                 if (act >= N(vendor_send_action))
 114                         break;
 115                 vendor_send_action[act] = f;
 116                 return 0;
 117         }
 118         return EINVAL;
 119 #undef N
 120 }
 121
 122 void
 123 ieee80211_send_action_unregister(int cat, int act)
 124 {
 125         ieee80211_send_action_register(cat, act, send_inval);
 126 }
 127
 128 int
 129 ieee80211_send_action(struct ieee80211_node *ni, int cat, int act, void *sa)
 130 {
 131 #define N(a)    (sizeof(a) / sizeof(a[0]))
 132         ieee80211_send_action_func *f = send_inval;
 133
 134         switch (cat) {
 135         case IEEE80211_ACTION_CAT_BA:
 136                 if (act < N(ba_send_action))
 137                         f = ba_send_action[act];
 138                 break;
 139         case IEEE80211_ACTION_CAT_HT:
 140                 if (act < N(ht_send_action))
 141                         f = ht_send_action[act];
 142                 break;
 143         case IEEE80211_ACTION_CAT_MESHPEERING:
 144                 if (act < N(meshpl_send_action))
 145                         f = meshpl_send_action[act];
 146                 break;
 147         case IEEE80211_ACTION_CAT_MESHLMETRIC:
 148                 if (act < N(meshlm_send_action))
 149                         f = meshlm_send_action[act];
 150                 break;
 151         case IEEE80211_ACTION_CAT_MESHPATH:
 152                 if (act < N(hwmp_send_action))
 153                         f = hwmp_send_action[act];
 154                 break;
 155         case IEEE80211_ACTION_CAT_VENDOR:
 156                 if (act < N(vendor_send_action))
 157                         f = vendor_send_action[act];
 158                 break;
 159         }
 160         return f(ni, cat, act, sa);
 161 #undef N
 162 }
 163
 164 static int
 165 recv_inval(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
 166         const uint8_t *frm, const uint8_t *efrm)
 167 {
 168         return EINVAL;
 169 }
 170
 171 static ieee80211_recv_action_func *ba_recv_action[8] = {
 172         recv_inval, recv_inval, recv_inval, recv_inval,
 173         recv_inval, recv_inval, recv_inval, recv_inval,
 174 };
 175 static ieee80211_recv_action_func *ht_recv_action[8] = {
 176         recv_inval, recv_inval, recv_inval, recv_inval,
 177         recv_inval, recv_inval, recv_inval, recv_inval,
 178 };
 179 static ieee80211_recv_action_func *meshpl_recv_action[8] = {
 180         recv_inval, recv_inval, recv_inval, recv_inval,
 181         recv_inval, recv_inval, recv_inval, recv_inval,
 182 };
 183 static ieee80211_recv_action_func *meshlm_recv_action[4] = {
 184         recv_inval, recv_inval, recv_inval, recv_inval,
 185 };
 186 static ieee80211_recv_action_func *hwmp_recv_action[8] = {
 187         recv_inval, recv_inval, recv_inval, recv_inval,
 188         recv_inval, recv_inval, recv_inval, recv_inval,
 189 };
 190 static ieee80211_recv_action_func *vendor_recv_action[8] = {
 191         recv_inval, recv_inval, recv_inval, recv_inval,
 192         recv_inval, recv_inval, recv_inval, recv_inval,
 193 };
 194
 195 int
 196 ieee80211_recv_action_register(int cat, int act, ieee80211_recv_action_func *f)
 197 {
 198 #define N(a)    (sizeof(a) / sizeof(a[0]))
 199         switch (cat) {
 200         case IEEE80211_ACTION_CAT_BA:
 201                 if (act >= N(ba_recv_action))
 202                         break;
 203                 ba_recv_action[act] = f;
 204                 return 0;
 205         case IEEE80211_ACTION_CAT_HT:
 206                 if (act >= N(ht_recv_action))
 207                         break;
 208                 ht_recv_action[act] = f;
 209                 return 0;
 210         case IEEE80211_ACTION_CAT_MESHPEERING:
 211                 if (act >= N(meshpl_recv_action))
 212                         break;
 213                 meshpl_recv_action[act] = f;
 214                 return 0;
 215         case IEEE80211_ACTION_CAT_MESHLMETRIC:
 216                 if (act >= N(meshlm_recv_action))
 217                         break;
 218                 meshlm_recv_action[act] = f;
 219                 return 0;
 220         case IEEE80211_ACTION_CAT_MESHPATH:
 221                 if (act >= N(hwmp_recv_action))
 222                         break;
 223                 hwmp_recv_action[act] = f;
 224                 return 0;
 225         case IEEE80211_ACTION_CAT_VENDOR:
 226                 if (act >= N(vendor_recv_action))
 227                         break;
 228                 vendor_recv_action[act] = f;
 229                 return 0;
 230         }
 231         return EINVAL;
 232 #undef N
 233 }
 234
 235 void
 236 ieee80211_recv_action_unregister(int cat, int act)
 237 {
 238         ieee80211_recv_action_register(cat, act, recv_inval);
 239 }
 240
 241 int
 242 ieee80211_recv_action(struct ieee80211_node *ni,
 243         const struct ieee80211_frame *wh,
 244         const uint8_t *frm, const uint8_t *efrm)
 245 {
 246 #define N(a)    (sizeof(a) / sizeof(a[0]))
 247         ieee80211_recv_action_func *f = recv_inval;
 248         const struct ieee80211_action *ia =
 249             (const struct ieee80211_action *) frm;
 250
 251         switch (ia->ia_category) {
 252         case IEEE80211_ACTION_CAT_BA:
 253                 if (ia->ia_action < N(ba_recv_action))
 254                         f = ba_recv_action[ia->ia_action];
 255                 break;
 256         case IEEE80211_ACTION_CAT_HT:
 257                 if (ia->ia_action < N(ht_recv_action))
 258                         f = ht_recv_action[ia->ia_action];
 259                 break;
 260         case IEEE80211_ACTION_CAT_MESHPEERING:
 261                 if (ia->ia_action < N(meshpl_recv_action))
 262                         f = meshpl_recv_action[ia->ia_action];
 263                 break;
 264         case IEEE80211_ACTION_CAT_MESHLMETRIC:
 265                 if (ia->ia_action < N(meshlm_recv_action))
 266                         f = meshlm_recv_action[ia->ia_action];
 267                 break;
 268         case IEEE80211_ACTION_CAT_MESHPATH:
 269                 if (ia->ia_action < N(hwmp_recv_action))
 270                         f = hwmp_recv_action[ia->ia_action];
 271                 break;
 272         case IEEE80211_ACTION_CAT_VENDOR:
 273                 if (ia->ia_action < N(vendor_recv_action))
 274                         f = vendor_recv_action[ia->ia_action];
 275                 break;
 276         }
 277         return f(ni, wh, frm, efrm);
 278 #undef N
 279 }