sys/net80211/ieee80211_action.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause
   3  *
   4  * Copyright (c) 2009 Sam Leffler, Errno Consulting
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 #ifdef __FreeBSD__
  30 #endif
  31
  32 /*
  33  * IEEE 802.11 send/recv action frame support.
  34  */
  35
  36 #include "opt_inet.h"
  37 #include "opt_wlan.h"
  38
  39 #include <sys/param.h>
  40 #include <sys/kernel.h>
  41 #include <sys/malloc.h>
  42 #include <sys/systm.h>
  43
  44 #include <sys/socket.h>
  45
  46 #include <net/if.h>
  47 #include <net/if_var.h>
  48 #include <net/if_media.h>
  49 #include <net/ethernet.h>
  50
  51 #include <net80211/ieee80211_var.h>
  52 #include <net80211/ieee80211_action.h>
  53 #include <net80211/ieee80211_mesh.h>
  54
  55 static int
  56 send_inval(struct ieee80211_node *ni, int cat, int act, void *sa)
  57 {
  58         return EINVAL;
  59 }
  60
  61 static ieee80211_send_action_func *ba_send_action[8] = {
  62         send_inval, send_inval, send_inval, send_inval,
  63         send_inval, send_inval, send_inval, send_inval,
  64 };
  65 static ieee80211_send_action_func *ht_send_action[8] = {
  66         send_inval, send_inval, send_inval, send_inval,
  67         send_inval, send_inval, send_inval, send_inval,
  68 };
  69 static ieee80211_send_action_func *meshpl_send_action[8] = {
  70         send_inval, send_inval, send_inval, send_inval,
  71         send_inval, send_inval, send_inval, send_inval,
  72 };
  73 static ieee80211_send_action_func *meshaction_send_action[12] = {
  74         send_inval, send_inval, send_inval, send_inval,
  75         send_inval, send_inval, send_inval, send_inval,
  76         send_inval, send_inval, send_inval, send_inval,
  77 };
  78 static ieee80211_send_action_func *vendor_send_action[8] = {
  79         send_inval, send_inval, send_inval, send_inval,
  80         send_inval, send_inval, send_inval, send_inval,
  81 };
  82
  83 static ieee80211_send_action_func *vht_send_action[3] = {
  84         send_inval, send_inval, send_inval,
  85 };
  86
  87 int
  88 ieee80211_send_action_register(int cat, int act, ieee80211_send_action_func *f)
  89 {
  90         switch (cat) {
  91         case IEEE80211_ACTION_CAT_BA:
  92                 if (act >= nitems(ba_send_action))
  93                         break;
  94                 ba_send_action[act] = f;
  95                 return 0;
  96         case IEEE80211_ACTION_CAT_HT:
  97                 if (act >= nitems(ht_send_action))
  98                         break;
  99                 ht_send_action[act] = f;
 100                 return 0;
 101         case IEEE80211_ACTION_CAT_SELF_PROT:
 102                 if (act >= nitems(meshpl_send_action))
 103                         break;
 104                 meshpl_send_action[act] = f;
 105                 return 0;
 106         case IEEE80211_ACTION_CAT_MESH:
 107                 if (act >= nitems(meshaction_send_action))
 108                         break;
 109                 meshaction_send_action[act] = f;
 110                 return 0;
 111         case IEEE80211_ACTION_CAT_VENDOR:
 112                 if (act >= nitems(vendor_send_action))
 113                         break;
 114                 vendor_send_action[act] = f;
 115                 return 0;
 116         case IEEE80211_ACTION_CAT_VHT:
 117                 if (act >= nitems(vht_send_action))
 118                         break;
 119                 vht_send_action[act] = f;
 120                 return 0;
 121         }
 122         return EINVAL;
 123 }
 124
 125 void
 126 ieee80211_send_action_unregister(int cat, int act)
 127 {
 128         ieee80211_send_action_register(cat, act, send_inval);
 129 }
 130
 131 int
 132 ieee80211_send_action(struct ieee80211_node *ni, int cat, int act, void *sa)
 133 {
 134         ieee80211_send_action_func *f = send_inval;
 135
 136         switch (cat) {
 137         case IEEE80211_ACTION_CAT_BA:
 138                 if (act < nitems(ba_send_action))
 139                         f = ba_send_action[act];
 140                 break;
 141         case IEEE80211_ACTION_CAT_HT:
 142                 if (act < nitems(ht_send_action))
 143                         f = ht_send_action[act];
 144                 break;
 145         case IEEE80211_ACTION_CAT_SELF_PROT:
 146                 if (act < nitems(meshpl_send_action))
 147                         f = meshpl_send_action[act];
 148                 break;
 149         case IEEE80211_ACTION_CAT_MESH:
 150                 if (act < nitems(meshaction_send_action))
 151                         f = meshaction_send_action[act];
 152                 break;
 153         case IEEE80211_ACTION_CAT_VENDOR:
 154                 if (act < nitems(vendor_send_action))
 155                         f = vendor_send_action[act];
 156                 break;
 157         case IEEE80211_ACTION_CAT_VHT:
 158                 if (act < nitems(vht_send_action))
 159                         f = vht_send_action[act];
 160                 break;
 161         }
 162         return f(ni, cat, act, sa);
 163 }
 164
 165 static int
 166 recv_inval(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
 167         const uint8_t *frm, const uint8_t *efrm)
 168 {
 169         return EINVAL;
 170 }
 171
 172 static ieee80211_recv_action_func *ba_recv_action[8] = {
 173         recv_inval, recv_inval, recv_inval, recv_inval,
 174         recv_inval, recv_inval, recv_inval, recv_inval,
 175 };
 176 static ieee80211_recv_action_func *ht_recv_action[8] = {
 177         recv_inval, recv_inval, recv_inval, recv_inval,
 178         recv_inval, recv_inval, recv_inval, recv_inval,
 179 };
 180 static ieee80211_recv_action_func *meshpl_recv_action[8] = {
 181         recv_inval, recv_inval, recv_inval, recv_inval,
 182         recv_inval, recv_inval, recv_inval, recv_inval,
 183 };
 184 static ieee80211_recv_action_func *meshaction_recv_action[12] = {
 185         recv_inval, recv_inval, recv_inval, recv_inval,
 186         recv_inval, recv_inval, recv_inval, recv_inval,
 187         recv_inval, recv_inval, recv_inval, recv_inval,
 188 };
 189 static ieee80211_recv_action_func *vendor_recv_action[8] = {
 190         recv_inval, recv_inval, recv_inval, recv_inval,
 191         recv_inval, recv_inval, recv_inval, recv_inval,
 192 };
 193
 194 static ieee80211_recv_action_func *vht_recv_action[3] = {
 195         recv_inval, recv_inval, recv_inval
 196 };
 197
 198 int
 199 ieee80211_recv_action_register(int cat, int act, ieee80211_recv_action_func *f)
 200 {
 201         switch (cat) {
 202         case IEEE80211_ACTION_CAT_BA:
 203                 if (act >= nitems(ba_recv_action))
 204                         break;
 205                 ba_recv_action[act] = f;
 206                 return 0;
 207         case IEEE80211_ACTION_CAT_HT:
 208                 if (act >= nitems(ht_recv_action))
 209                         break;
 210                 ht_recv_action[act] = f;
 211                 return 0;
 212         case IEEE80211_ACTION_CAT_SELF_PROT:
 213                 if (act >= nitems(meshpl_recv_action))
 214                         break;
 215                 meshpl_recv_action[act] = f;
 216                 return 0;
 217         case IEEE80211_ACTION_CAT_MESH:
 218                 if (act >= nitems(meshaction_recv_action))
 219                         break;
 220                 meshaction_recv_action[act] = f;
 221                 return 0;
 222         case IEEE80211_ACTION_CAT_VENDOR:
 223                 if (act >= nitems(vendor_recv_action))
 224                         break;
 225                 vendor_recv_action[act] = f;
 226                 return 0;
 227         case IEEE80211_ACTION_CAT_VHT:
 228                 if (act >= nitems(vht_recv_action))
 229                         break;
 230                 vht_recv_action[act] = f;
 231                 return 0;
 232         }
 233         return EINVAL;
 234 }
 235
 236 void
 237 ieee80211_recv_action_unregister(int cat, int act)
 238 {
 239         ieee80211_recv_action_register(cat, act, recv_inval);
 240 }
 241
 242 int
 243 ieee80211_recv_action(struct ieee80211_node *ni,
 244         const struct ieee80211_frame *wh,
 245         const uint8_t *frm, const uint8_t *efrm)
 246 {
 247         ieee80211_recv_action_func *f = recv_inval;
 248         struct ieee80211vap *vap = ni->ni_vap;
 249         const struct ieee80211_action *ia =
 250             (const struct ieee80211_action *) frm;
 251
 252         switch (ia->ia_category) {
 253         case IEEE80211_ACTION_CAT_BA:
 254                 if (ia->ia_action < nitems(ba_recv_action))
 255                         f = ba_recv_action[ia->ia_action];
 256                 break;
 257         case IEEE80211_ACTION_CAT_HT:
 258                 if (ia->ia_action < nitems(ht_recv_action))
 259                         f = ht_recv_action[ia->ia_action];
 260                 break;
 261         case IEEE80211_ACTION_CAT_SELF_PROT:
 262                 if (ia->ia_action < nitems(meshpl_recv_action))
 263                         f = meshpl_recv_action[ia->ia_action];
 264                 break;
 265         case IEEE80211_ACTION_CAT_MESH:
 266                 if (ni == vap->iv_bss ||
 267                     ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
 268                         IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH,
 269                             ni->ni_macaddr, NULL,
 270                             "peer link not yet established (%d), cat %s act %u",
 271                             ni->ni_mlstate, "mesh action", ia->ia_action);
 272                         vap->iv_stats.is_mesh_nolink++;
 273                         break;
 274                 }
 275                 if (ia->ia_action < nitems(meshaction_recv_action))
 276                         f = meshaction_recv_action[ia->ia_action];
 277                 break;
 278         case IEEE80211_ACTION_CAT_VENDOR:
 279                 if (ia->ia_action < nitems(vendor_recv_action))
 280                         f = vendor_recv_action[ia->ia_action];
 281                 break;
 282         case IEEE80211_ACTION_CAT_VHT:
 283                 if (ia->ia_action < nitems(vht_recv_action))
 284                         f = vht_recv_action[ia->ia_action];
 285                 break;
 286         }
 287         return f(ni, wh, frm, efrm);
 288 }