ieee80211_action.c revision 246503
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: head/sys/net80211/ieee80211_action.c 246503 2013-02-07 21:21:40Z monthadar $"); 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#define N(a) (sizeof(a) / sizeof(a[0])) 84 switch (cat) { 85 case IEEE80211_ACTION_CAT_BA: 86 if (act >= N(ba_send_action)) 87 break; 88 ba_send_action[act] = f; 89 return 0; 90 case IEEE80211_ACTION_CAT_HT: 91 if (act >= N(ht_send_action)) 92 break; 93 ht_send_action[act] = f; 94 return 0; 95 case IEEE80211_ACTION_CAT_SELF_PROT: 96 if (act >= N(meshpl_send_action)) 97 break; 98 meshpl_send_action[act] = f; 99 return 0; 100 case IEEE80211_ACTION_CAT_MESH: 101 if (act >= N(meshaction_send_action)) 102 break; 103 meshaction_send_action[act] = f; 104 return 0; 105 break; 106 case IEEE80211_ACTION_CAT_VENDOR: 107 if (act >= N(vendor_send_action)) 108 break; 109 vendor_send_action[act] = f; 110 return 0; 111 } 112 return EINVAL; 113#undef N 114} 115 116void 117ieee80211_send_action_unregister(int cat, int act) 118{ 119 ieee80211_send_action_register(cat, act, send_inval); 120} 121 122int 123ieee80211_send_action(struct ieee80211_node *ni, int cat, int act, void *sa) 124{ 125#define N(a) (sizeof(a) / sizeof(a[0])) 126 ieee80211_send_action_func *f = send_inval; 127 128 switch (cat) { 129 case IEEE80211_ACTION_CAT_BA: 130 if (act < N(ba_send_action)) 131 f = ba_send_action[act]; 132 break; 133 case IEEE80211_ACTION_CAT_HT: 134 if (act < N(ht_send_action)) 135 f = ht_send_action[act]; 136 break; 137 case IEEE80211_ACTION_CAT_SELF_PROT: 138 if (act < N(meshpl_send_action)) 139 f = meshpl_send_action[act]; 140 break; 141 case IEEE80211_ACTION_CAT_MESH: 142 if (act < N(meshaction_send_action)) 143 f = meshaction_send_action[act]; 144 break; 145 case IEEE80211_ACTION_CAT_VENDOR: 146 if (act < N(vendor_send_action)) 147 f = vendor_send_action[act]; 148 break; 149 } 150 return f(ni, cat, act, sa); 151#undef N 152} 153 154static int 155recv_inval(struct ieee80211_node *ni, const struct ieee80211_frame *wh, 156 const uint8_t *frm, const uint8_t *efrm) 157{ 158 return EINVAL; 159} 160 161static ieee80211_recv_action_func *ba_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 *ht_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 *meshpl_recv_action[8] = { 170 recv_inval, recv_inval, recv_inval, recv_inval, 171 recv_inval, recv_inval, recv_inval, recv_inval, 172}; 173static ieee80211_recv_action_func *meshaction_recv_action[12] = { 174 recv_inval, recv_inval, recv_inval, recv_inval, 175 recv_inval, recv_inval, recv_inval, recv_inval, 176 recv_inval, recv_inval, recv_inval, recv_inval, 177}; 178static ieee80211_recv_action_func *vendor_recv_action[8] = { 179 recv_inval, recv_inval, recv_inval, recv_inval, 180 recv_inval, recv_inval, recv_inval, recv_inval, 181}; 182 183int 184ieee80211_recv_action_register(int cat, int act, ieee80211_recv_action_func *f) 185{ 186#define N(a) (sizeof(a) / sizeof(a[0])) 187 switch (cat) { 188 case IEEE80211_ACTION_CAT_BA: 189 if (act >= N(ba_recv_action)) 190 break; 191 ba_recv_action[act] = f; 192 return 0; 193 case IEEE80211_ACTION_CAT_HT: 194 if (act >= N(ht_recv_action)) 195 break; 196 ht_recv_action[act] = f; 197 return 0; 198 case IEEE80211_ACTION_CAT_SELF_PROT: 199 if (act >= N(meshpl_recv_action)) 200 break; 201 meshpl_recv_action[act] = f; 202 return 0; 203 case IEEE80211_ACTION_CAT_MESH: 204 if (act >= N(meshaction_recv_action)) 205 break; 206 meshaction_recv_action[act] = f; 207 return 0; 208 case IEEE80211_ACTION_CAT_VENDOR: 209 if (act >= N(vendor_recv_action)) 210 break; 211 vendor_recv_action[act] = f; 212 return 0; 213 } 214 return EINVAL; 215#undef N 216} 217 218void 219ieee80211_recv_action_unregister(int cat, int act) 220{ 221 ieee80211_recv_action_register(cat, act, recv_inval); 222} 223 224int 225ieee80211_recv_action(struct ieee80211_node *ni, 226 const struct ieee80211_frame *wh, 227 const uint8_t *frm, const uint8_t *efrm) 228{ 229#define N(a) (sizeof(a) / sizeof(a[0])) 230 ieee80211_recv_action_func *f = recv_inval; 231 struct ieee80211vap *vap = ni->ni_vap; 232 const struct ieee80211_action *ia = 233 (const struct ieee80211_action *) frm; 234 235 switch (ia->ia_category) { 236 case IEEE80211_ACTION_CAT_BA: 237 if (ia->ia_action < N(ba_recv_action)) 238 f = ba_recv_action[ia->ia_action]; 239 break; 240 case IEEE80211_ACTION_CAT_HT: 241 if (ia->ia_action < N(ht_recv_action)) 242 f = ht_recv_action[ia->ia_action]; 243 break; 244 case IEEE80211_ACTION_CAT_SELF_PROT: 245 if (ia->ia_action < N(meshpl_recv_action)) 246 f = meshpl_recv_action[ia->ia_action]; 247 break; 248 case IEEE80211_ACTION_CAT_MESH: 249 if (ni == vap->iv_bss || 250 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { 251 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, 252 ni->ni_macaddr, NULL, 253 "peer link not yet established (%d), cat %s act %u", 254 ni->ni_mlstate, "mesh action", ia->ia_action); 255 vap->iv_stats.is_mesh_nolink++; 256 break; 257 } 258 if (ia->ia_action < N(meshaction_recv_action)) 259 f = meshaction_recv_action[ia->ia_action]; 260 break; 261 case IEEE80211_ACTION_CAT_VENDOR: 262 if (ia->ia_action < N(vendor_recv_action)) 263 f = vendor_recv_action[ia->ia_action]; 264 break; 265 } 266 return f(ni, wh, frm, efrm); 267#undef N 268} 269