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_MESH:
 103                 switch (act) {
 104                 case IEEE80211_ACTION_MESH_LMETRIC:
 105                         if (act >= N(meshlm_send_action))
 106                                 break;
 107                         meshlm_send_action[act] = f;
 108                         return 0;
 109                 case IEEE80211_ACTION_MESH_HWMP:
 110                         if (act >= N(hwmp_send_action))
 111                                 break;
 112                         hwmp_send_action[act] = f;
 113                         return 0;
 114                 }
 115                 break;
 116         case IEEE80211_ACTION_CAT_VENDOR:
 117                 if (act >= N(vendor_send_action))
 118                         break;
 119                 vendor_send_action[act] = f;
 120                 return 0;
 121         }
 122         return EINVAL;
 123 #undef N
 124 }
 125
 126 void
 127 ieee80211_send_action_unregister(int cat, int act)
 128 {
 129         ieee80211_send_action_register(cat, act, send_inval);
 130 }
 131
 132 int
 133 ieee80211_send_action(struct ieee80211_node *ni, int cat, int act, void *sa)
 134 {
 135 #define N(a)    (sizeof(a) / sizeof(a[0]))
 136         ieee80211_send_action_func *f = send_inval;
 137
 138         switch (cat) {
 139         case IEEE80211_ACTION_CAT_BA:
 140                 if (act < N(ba_send_action))
 141                         f = ba_send_action[act];
 142                 break;
 143         case IEEE80211_ACTION_CAT_HT:
 144                 if (act < N(ht_send_action))
 145                         f = ht_send_action[act];
 146                 break;
 147         case IEEE80211_ACTION_CAT_MESHPEERING:
 148                 if (act < N(meshpl_send_action))
 149                         f = meshpl_send_action[act];
 150                 break;
 151         case IEEE80211_ACTION_CAT_MESH:
 152                 switch (act) {
 153                 case IEEE80211_ACTION_MESH_LMETRIC:
 154                         if (act < N(meshlm_send_action))
 155                                 f = meshlm_send_action[act];
 156                         break;
 157                 case IEEE80211_ACTION_MESH_HWMP:
 158                         if (act < N(hwmp_send_action))
 159                                 f = hwmp_send_action[act];
 160                         break;
 161                 }
 162                 break;
 163         case IEEE80211_ACTION_CAT_VENDOR:
 164                 if (act < N(vendor_send_action))
 165                         f = vendor_send_action[act];
 166                 break;
 167         }
 168         return f(ni, cat, act, sa);
 169 #undef N
 170 }
 171
 172 static int
 173 recv_inval(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
 174         const uint8_t *frm, const uint8_t *efrm)
 175 {
 176         return EINVAL;
 177 }
 178
 179 static ieee80211_recv_action_func *ba_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 *ht_recv_action[8] = {
 184         recv_inval, recv_inval, recv_inval, recv_inval,
 185         recv_inval, recv_inval, recv_inval, recv_inval,
 186 };
 187 static ieee80211_recv_action_func *meshpl_recv_action[8] = {
 188         recv_inval, recv_inval, recv_inval, recv_inval,
 189         recv_inval, recv_inval, recv_inval, recv_inval,
 190 };
 191 static ieee80211_recv_action_func *meshlm_recv_action[4] = {
 192         recv_inval, recv_inval, recv_inval, recv_inval,
 193 };
 194 static ieee80211_recv_action_func *hwmp_recv_action[8] = {
 195         recv_inval, recv_inval, recv_inval, recv_inval,
 196         recv_inval, recv_inval, recv_inval, recv_inval,
 197 };
 198 static ieee80211_recv_action_func *vendor_recv_action[8] = {
 199         recv_inval, recv_inval, recv_inval, recv_inval,
 200         recv_inval, recv_inval, recv_inval, recv_inval,
 201 };
 202
 203 int
 204 ieee80211_recv_action_register(int cat, int act, ieee80211_recv_action_func *f)
 205 {
 206 #define N(a)    (sizeof(a) / sizeof(a[0]))
 207         switch (cat) {
 208         case IEEE80211_ACTION_CAT_BA:
 209                 if (act >= N(ba_recv_action))
 210                         break;
 211                 ba_recv_action[act] = f;
 212                 return 0;
 213         case IEEE80211_ACTION_CAT_HT:
 214                 if (act >= N(ht_recv_action))
 215                         break;
 216                 ht_recv_action[act] = f;
 217                 return 0;
 218         case IEEE80211_ACTION_CAT_MESHPEERING:
 219                 if (act >= N(meshpl_recv_action))
 220                         break;
 221                 meshpl_recv_action[act] = f;
 222                 return 0;
 223         case IEEE80211_ACTION_CAT_MESH:
 224                 switch (act) {
 225                 case IEEE80211_ACTION_MESH_LMETRIC:
 226                         if (act >= N(meshlm_recv_action))
 227                                 break;
 228                         meshlm_recv_action[act] = f;
 229                         return 0;
 230                 case IEEE80211_ACTION_MESH_HWMP:
 231                         if (act >= N(hwmp_recv_action))
 232                                 break;
 233                         hwmp_recv_action[act] = f;
 234                         return 0;
 235                 }
 236                 break;
 237         case IEEE80211_ACTION_CAT_VENDOR:
 238                 if (act >= N(vendor_recv_action))
 239                         break;
 240                 vendor_recv_action[act] = f;
 241                 return 0;
 242         }
 243         return EINVAL;
 244 #undef N
 245 }
 246
 247 void
 248 ieee80211_recv_action_unregister(int cat, int act)
 249 {
 250         ieee80211_recv_action_register(cat, act, recv_inval);
 251 }
 252
 253 int
 254 ieee80211_recv_action(struct ieee80211_node *ni,
 255         const struct ieee80211_frame *wh,
 256         const uint8_t *frm, const uint8_t *efrm)
 257 {
 258 #define N(a)    (sizeof(a) / sizeof(a[0]))
 259         ieee80211_recv_action_func *f = recv_inval;
 260         const struct ieee80211_action *ia =
 261             (const struct ieee80211_action *) frm;
 262
 263         switch (ia->ia_category) {
 264         case IEEE80211_ACTION_CAT_BA:
 265                 if (ia->ia_action < N(ba_recv_action))
 266                         f = ba_recv_action[ia->ia_action];
 267                 break;
 268         case IEEE80211_ACTION_CAT_HT:
 269                 if (ia->ia_action < N(ht_recv_action))
 270                         f = ht_recv_action[ia->ia_action];
 271                 break;
 272         case IEEE80211_ACTION_CAT_MESHPEERING:
 273                 if (ia->ia_action < N(meshpl_recv_action))
 274                         f = meshpl_recv_action[ia->ia_action];
 275                 break;
 276         case IEEE80211_ACTION_CAT_MESH:
 277                 switch (ia->ia_action) {
 278                 case IEEE80211_ACTION_MESH_LMETRIC:
 279                         if (ia->ia_action < N(meshlm_recv_action))
 280                                 f = meshlm_recv_action[ia->ia_action];
 281                         break;
 282                 case IEEE80211_ACTION_MESH_HWMP:
 283                         if (ia->ia_action < N(hwmp_recv_action))
 284                                 f = hwmp_recv_action[ia->ia_action];
 285                         break;
 286                 }
 287                 break;
 288         case IEEE80211_ACTION_CAT_VENDOR:
 289                 if (ia->ia_action < N(vendor_recv_action))
 290                         f = vendor_recv_action[ia->ia_action];
 291                 break;
 292         }
 293         return f(ni, wh, frm, efrm);
 294 #undef N
 295 }