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 /*
  29  * IEEE 802.11 send/recv action frame support.
  30  */
  31
  32 #include "opt_inet.h"
  33 #include "opt_wlan.h"
  34
  35 #include <sys/param.h>
  36 #include <sys/kernel.h>
  37 #include <sys/malloc.h>
  38 #include <sys/systm.h>
  39
  40 #include <sys/socket.h>
  41
  42 #include <net/if.h>
  43 #include <net/if_var.h>
  44 #include <net/if_media.h>
  45 #include <net/ethernet.h>
  46
  47 #include <net80211/ieee80211_var.h>
  48 #include <net80211/ieee80211_action.h>
  49 #include <net80211/ieee80211_mesh.h>
  50
  51 static int
  52 send_inval(struct ieee80211_node *ni, int cat, int act, void *sa)
  53 {
  54         return EINVAL;
  55 }
  56
  57 static ieee80211_send_action_func *ba_send_action[8] = {
  58         send_inval, send_inval, send_inval, send_inval,
  59         send_inval, send_inval, send_inval, send_inval,
  60 };
  61 static ieee80211_send_action_func *ht_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 *meshpl_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 *meshaction_send_action[12] = {
  70         send_inval, send_inval, send_inval, send_inval,
  71         send_inval, send_inval, send_inval, send_inval,
  72         send_inval, send_inval, send_inval, send_inval,
  73 };
  74 static ieee80211_send_action_func *vendor_send_action[8] = {
  75         send_inval, send_inval, send_inval, send_inval,
  76         send_inval, send_inval, send_inval, send_inval,
  77 };
  78
  79 static ieee80211_send_action_func *vht_send_action[3] = {
  80         send_inval, send_inval, send_inval,
  81 };
  82
  83 int
  84 ieee80211_send_action_register(int cat, int act, ieee80211_send_action_func *f)
  85 {
  86         switch (cat) {
  87         case IEEE80211_ACTION_CAT_BA:
  88                 if (act >= nitems(ba_send_action))
  89                         break;
  90                 ba_send_action[act] = f;
  91                 return 0;
  92         case IEEE80211_ACTION_CAT_HT:
  93                 if (act >= nitems(ht_send_action))
  94                         break;
  95                 ht_send_action[act] = f;
  96                 return 0;
  97         case IEEE80211_ACTION_CAT_SELF_PROT:
  98                 if (act >= nitems(meshpl_send_action))
  99                         break;
 100                 meshpl_send_action[act] = f;
 101                 return 0;
 102         case IEEE80211_ACTION_CAT_MESH:
 103                 if (act >= nitems(meshaction_send_action))
 104                         break;
 105                 meshaction_send_action[act] = f;
 106                 return 0;
 107         case IEEE80211_ACTION_CAT_VENDOR:
 108                 if (act >= nitems(vendor_send_action))
 109                         break;
 110                 vendor_send_action[act] = f;
 111                 return 0;
 112         case IEEE80211_ACTION_CAT_VHT:
 113                 if (act >= nitems(vht_send_action))
 114                         break;
 115                 vht_send_action[act] = f;
 116                 return 0;
 117         }
 118         return EINVAL;
 119 }
 120
 121 void
 122 ieee80211_send_action_unregister(int cat, int act)
 123 {
 124         ieee80211_send_action_register(cat, act, send_inval);
 125 }
 126
 127 int
 128 ieee80211_send_action(struct ieee80211_node *ni, int cat, int act, void *sa)
 129 {
 130         ieee80211_send_action_func *f = send_inval;
 131
 132         switch (cat) {
 133         case IEEE80211_ACTION_CAT_BA:
 134                 if (act < nitems(ba_send_action))
 135                         f = ba_send_action[act];
 136                 break;
 137         case IEEE80211_ACTION_CAT_HT:
 138                 if (act < nitems(ht_send_action))
 139                         f = ht_send_action[act];
 140                 break;
 141         case IEEE80211_ACTION_CAT_SELF_PROT:
 142                 if (act < nitems(meshpl_send_action))
 143                         f = meshpl_send_action[act];
 144                 break;
 145         case IEEE80211_ACTION_CAT_MESH:
 146                 if (act < nitems(meshaction_send_action))
 147                         f = meshaction_send_action[act];
 148                 break;
 149         case IEEE80211_ACTION_CAT_VENDOR:
 150                 if (act < nitems(vendor_send_action))
 151                         f = vendor_send_action[act];
 152                 break;
 153         case IEEE80211_ACTION_CAT_VHT:
 154                 if (act < nitems(vht_send_action))
 155                         f = vht_send_action[act];
 156                 break;
 157         }
 158         return f(ni, cat, act, sa);
 159 }
 160
 161 static int
 162 recv_inval(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
 163         const uint8_t *frm, const uint8_t *efrm)
 164 {
 165         return EINVAL;
 166 }
 167
 168 static ieee80211_recv_action_func *ba_recv_action[8] = {
 169         recv_inval, recv_inval, recv_inval, recv_inval,
 170         recv_inval, recv_inval, recv_inval, recv_inval,
 171 };
 172 static ieee80211_recv_action_func *ht_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 *meshpl_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 *meshaction_recv_action[12] = {
 181         recv_inval, recv_inval, recv_inval, recv_inval,
 182         recv_inval, recv_inval, recv_inval, recv_inval,
 183         recv_inval, recv_inval, recv_inval, recv_inval,
 184 };
 185 static ieee80211_recv_action_func *vendor_recv_action[8] = {
 186         recv_inval, recv_inval, recv_inval, recv_inval,
 187         recv_inval, recv_inval, recv_inval, recv_inval,
 188 };
 189
 190 static ieee80211_recv_action_func *vht_recv_action[3] = {
 191         recv_inval, recv_inval, recv_inval
 192 };
 193
 194 int
 195 ieee80211_recv_action_register(int cat, int act, ieee80211_recv_action_func *f)
 196 {
 197         switch (cat) {
 198         case IEEE80211_ACTION_CAT_BA:
 199                 if (act >= nitems(ba_recv_action))
 200                         break;
 201                 ba_recv_action[act] = f;
 202                 return 0;
 203         case IEEE80211_ACTION_CAT_HT:
 204                 if (act >= nitems(ht_recv_action))
 205                         break;
 206                 ht_recv_action[act] = f;
 207                 return 0;
 208         case IEEE80211_ACTION_CAT_SELF_PROT:
 209                 if (act >= nitems(meshpl_recv_action))
 210                         break;
 211                 meshpl_recv_action[act] = f;
 212                 return 0;
 213         case IEEE80211_ACTION_CAT_MESH:
 214                 if (act >= nitems(meshaction_recv_action))
 215                         break;
 216                 meshaction_recv_action[act] = f;
 217                 return 0;
 218         case IEEE80211_ACTION_CAT_VENDOR:
 219                 if (act >= nitems(vendor_recv_action))
 220                         break;
 221                 vendor_recv_action[act] = f;
 222                 return 0;
 223         case IEEE80211_ACTION_CAT_VHT:
 224                 if (act >= nitems(vht_recv_action))
 225                         break;
 226                 vht_recv_action[act] = f;
 227                 return 0;
 228         }
 229         return EINVAL;
 230 }
 231
 232 void
 233 ieee80211_recv_action_unregister(int cat, int act)
 234 {
 235         ieee80211_recv_action_register(cat, act, recv_inval);
 236 }
 237
 238 int
 239 ieee80211_recv_action(struct ieee80211_node *ni,
 240         const struct ieee80211_frame *wh,
 241         const uint8_t *frm, const uint8_t *efrm)
 242 {
 243         ieee80211_recv_action_func *f = recv_inval;
 244         struct ieee80211vap *vap = ni->ni_vap;
 245         const struct ieee80211_action *ia =
 246             (const struct ieee80211_action *) frm;
 247
 248         switch (ia->ia_category) {
 249         case IEEE80211_ACTION_CAT_BA:
 250                 if (ia->ia_action < nitems(ba_recv_action))
 251                         f = ba_recv_action[ia->ia_action];
 252                 break;
 253         case IEEE80211_ACTION_CAT_HT:
 254                 if (ia->ia_action < nitems(ht_recv_action))
 255                         f = ht_recv_action[ia->ia_action];
 256                 break;
 257         case IEEE80211_ACTION_CAT_SELF_PROT:
 258                 if (ia->ia_action < nitems(meshpl_recv_action))
 259                         f = meshpl_recv_action[ia->ia_action];
 260                 break;
 261         case IEEE80211_ACTION_CAT_MESH:
 262                 if (ni == vap->iv_bss ||
 263                     ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
 264                         IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH,
 265                             ni->ni_macaddr, NULL,
 266                             "peer link not yet established (%d), cat %s act %u",
 267                             ni->ni_mlstate, "mesh action", ia->ia_action);
 268                         vap->iv_stats.is_mesh_nolink++;
 269                         break;
 270                 }
 271                 if (ia->ia_action < nitems(meshaction_recv_action))
 272                         f = meshaction_recv_action[ia->ia_action];
 273                 break;
 274         case IEEE80211_ACTION_CAT_VENDOR:
 275                 if (ia->ia_action < nitems(vendor_recv_action))
 276                         f = vendor_recv_action[ia->ia_action];
 277                 break;
 278         case IEEE80211_ACTION_CAT_VHT:
 279                 if (ia->ia_action < nitems(vht_recv_action))
 280                         f = vht_recv_action[ia->ia_action];
 281                 break;
 282         }
 283         return f(ni, wh, frm, efrm);
 284 }