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 52static int 53send_inval(struct ieee80211_node *ni, int cat, int act, void *sa) 54{ 55 return EINVAL; 56} 57 58static 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}; 62static 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}; 66static 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}; 70static ieee80211_send_action_func *meshaction_send_action[12] = { 71 send_inval, send_inval, send_inval, send_inval, 72 send_inval, send_inval, send_inval, send_inval, 73 send_inval, send_inval, send_inval, send_inval, 74}; 75static ieee80211_send_action_func *vendor_send_action[8] = { 76 send_inval, send_inval, send_inval, send_inval, 77 send_inval, send_inval, send_inval, send_inval, 78}; 79 80int 81ieee80211_send_action_register(int cat, int act, ieee80211_send_action_func *f) 82{ 83 switch (cat) { 84 case IEEE80211_ACTION_CAT_BA: 85 if (act >= nitems(ba_send_action)) 86 break; 87 ba_send_action[act] = f; 88 return 0; 89 case IEEE80211_ACTION_CAT_HT: 90 if (act >= nitems(ht_send_action)) 91 break; 92 ht_send_action[act] = f; 93 return 0; 94 case IEEE80211_ACTION_CAT_SELF_PROT: 95 if (act >= nitems(meshpl_send_action)) 96 break; 97 meshpl_send_action[act] = f; 98 return 0; 99 case IEEE80211_ACTION_CAT_MESH: 100 if (act >= nitems(meshaction_send_action)) 101 break; 102 meshaction_send_action[act] = f; 103 return 0; 104 break; 105 case IEEE80211_ACTION_CAT_VENDOR: 106 if (act >= nitems(vendor_send_action)) 107 break; 108 vendor_send_action[act] = f; 109 return 0; 110 } 111 return EINVAL; 112} 113 114void 115ieee80211_send_action_unregister(int cat, int act) 116{ 117 ieee80211_send_action_register(cat, act, send_inval); 118} 119 120int 121ieee80211_send_action(struct ieee80211_node *ni, int cat, int act, void *sa) 122{ 123 ieee80211_send_action_func *f = send_inval; 124 125 switch (cat) { 126 case IEEE80211_ACTION_CAT_BA: 127 if (act < nitems(ba_send_action)) 128 f = ba_send_action[act]; 129 break; 130 case IEEE80211_ACTION_CAT_HT: 131 if (act < nitems(ht_send_action)) 132 f = ht_send_action[act]; 133 break; 134 case IEEE80211_ACTION_CAT_SELF_PROT: 135 if (act < nitems(meshpl_send_action)) 136 f = meshpl_send_action[act]; 137 break; 138 case IEEE80211_ACTION_CAT_MESH: 139 if (act < nitems(meshaction_send_action)) 140 f = meshaction_send_action[act]; 141 break; 142 case IEEE80211_ACTION_CAT_VENDOR: 143 if (act < nitems(vendor_send_action)) 144 f = vendor_send_action[act]; 145 break; 146 } 147 return f(ni, cat, act, sa); 148} 149 150static int 151recv_inval(struct ieee80211_node *ni, const struct ieee80211_frame *wh, 152 const uint8_t *frm, const uint8_t *efrm) 153{ 154 return EINVAL; 155} 156 157static ieee80211_recv_action_func *ba_recv_action[8] = { 158 recv_inval, recv_inval, recv_inval, recv_inval, 159 recv_inval, recv_inval, recv_inval, recv_inval, 160}; 161static ieee80211_recv_action_func *ht_recv_action[8] = { 162 recv_inval, recv_inval, recv_inval, recv_inval, 163 recv_inval, recv_inval, recv_inval, recv_inval, 164}; 165static ieee80211_recv_action_func *meshpl_recv_action[8] = { 166 recv_inval, recv_inval, recv_inval, recv_inval, 167 recv_inval, recv_inval, recv_inval, recv_inval, 168}; 169static ieee80211_recv_action_func *meshaction_recv_action[12] = { 170 recv_inval, recv_inval, recv_inval, recv_inval, 171 recv_inval, recv_inval, recv_inval, recv_inval, 172 recv_inval, recv_inval, recv_inval, recv_inval, 173}; 174static ieee80211_recv_action_func *vendor_recv_action[8] = { 175 recv_inval, recv_inval, recv_inval, recv_inval, 176 recv_inval, recv_inval, recv_inval, recv_inval, 177}; 178 179int 180ieee80211_recv_action_register(int cat, int act, ieee80211_recv_action_func *f) 181{ 182 switch (cat) { 183 case IEEE80211_ACTION_CAT_BA: 184 if (act >= nitems(ba_recv_action)) 185 break; 186 ba_recv_action[act] = f; 187 return 0; 188 case IEEE80211_ACTION_CAT_HT: 189 if (act >= nitems(ht_recv_action)) 190 break; 191 ht_recv_action[act] = f; 192 return 0; 193 case IEEE80211_ACTION_CAT_SELF_PROT: 194 if (act >= nitems(meshpl_recv_action)) 195 break; 196 meshpl_recv_action[act] = f; 197 return 0; 198 case IEEE80211_ACTION_CAT_MESH: 199 if (act >= nitems(meshaction_recv_action)) 200 break; 201 meshaction_recv_action[act] = f; 202 return 0; 203 case IEEE80211_ACTION_CAT_VENDOR: 204 if (act >= nitems(vendor_recv_action)) 205 break; 206 vendor_recv_action[act] = f; 207 return 0; 208 } 209 return EINVAL; 210} 211 212void 213ieee80211_recv_action_unregister(int cat, int act) 214{ 215 ieee80211_recv_action_register(cat, act, recv_inval); 216} 217 218int 219ieee80211_recv_action(struct ieee80211_node *ni, 220 const struct ieee80211_frame *wh, 221 const uint8_t *frm, const uint8_t *efrm) 222{ 223 ieee80211_recv_action_func *f = recv_inval; 224 struct ieee80211vap *vap = ni->ni_vap; 225 const struct ieee80211_action *ia = 226 (const struct ieee80211_action *) frm; 227 228 switch (ia->ia_category) { 229 case IEEE80211_ACTION_CAT_BA: 230 if (ia->ia_action < nitems(ba_recv_action)) 231 f = ba_recv_action[ia->ia_action]; 232 break; 233 case IEEE80211_ACTION_CAT_HT: 234 if (ia->ia_action < nitems(ht_recv_action)) 235 f = ht_recv_action[ia->ia_action]; 236 break; 237 case IEEE80211_ACTION_CAT_SELF_PROT: 238 if (ia->ia_action < nitems(meshpl_recv_action)) 239 f = meshpl_recv_action[ia->ia_action]; 240 break; 241 case IEEE80211_ACTION_CAT_MESH: 242 if (ni == vap->iv_bss || 243 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 244 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 245 ni->ni_macaddr, NULL, 246 "peer link not yet established (%d), cat %s act %u", 247 ni->ni_mlstate, "mesh action", ia->ia_action); 248 vap->iv_stats.is_mesh_nolink++; 249 break; 250 } 251 if (ia->ia_action < nitems(meshaction_recv_action)) 252 f = meshaction_recv_action[ia->ia_action]; 253 break; 254 case IEEE80211_ACTION_CAT_VENDOR: 255 if (ia->ia_action < nitems(vendor_recv_action)) 256 f = vendor_recv_action[ia->ia_action]; 257 break; 258 } 259 return f(ni, wh, frm, efrm); 260} 261