1178354Ssam/*- 2186904Ssam * Copyright (c) 2007-2009 Sam Leffler, Errno Consulting 3178354Ssam * All rights reserved. 4178354Ssam * 5178354Ssam * Redistribution and use in source and binary forms, with or without 6178354Ssam * modification, are permitted provided that the following conditions 7178354Ssam * are met: 8178354Ssam * 1. Redistributions of source code must retain the above copyright 9178354Ssam * notice, this list of conditions and the following disclaimer. 10178354Ssam * 2. Redistributions in binary form must reproduce the above copyright 11178354Ssam * notice, this list of conditions and the following disclaimer in the 12178354Ssam * documentation and/or other materials provided with the distribution. 13178354Ssam * 14178354Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15178354Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16178354Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17178354Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18178354Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19178354Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20178354Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21178354Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22178354Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23178354Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24178354Ssam */ 25178354Ssam 26178354Ssam#include <sys/cdefs.h> 27178354Ssam#ifdef __FreeBSD__ 28178354Ssam__FBSDID("$FreeBSD$"); 29178354Ssam#endif 30178354Ssam 31178354Ssam/* 32178354Ssam * IEEE 802.11 IBSS mode support. 33178354Ssam */ 34178354Ssam#include "opt_inet.h" 35178354Ssam#include "opt_wlan.h" 36178354Ssam 37178354Ssam#include <sys/param.h> 38178354Ssam#include <sys/systm.h> 39178354Ssam#include <sys/mbuf.h> 40178354Ssam#include <sys/malloc.h> 41178354Ssam#include <sys/kernel.h> 42178354Ssam 43178354Ssam#include <sys/socket.h> 44178354Ssam#include <sys/sockio.h> 45178354Ssam#include <sys/endian.h> 46178354Ssam#include <sys/errno.h> 47178354Ssam#include <sys/proc.h> 48178354Ssam#include <sys/sysctl.h> 49178354Ssam 50178354Ssam#include <net/if.h> 51178354Ssam#include <net/if_media.h> 52178354Ssam#include <net/if_llc.h> 53178354Ssam#include <net/ethernet.h> 54178354Ssam 55178354Ssam#include <net/bpf.h> 56178354Ssam 57178354Ssam#include <net80211/ieee80211_var.h> 58178354Ssam#include <net80211/ieee80211_adhoc.h> 59178354Ssam#include <net80211/ieee80211_input.h> 60190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 61190391Ssam#include <net80211/ieee80211_superg.h> 62190391Ssam#endif 63186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 64186904Ssam#include <net80211/ieee80211_tdma.h> 65186904Ssam#endif 66244060Sadrian#include <net80211/ieee80211_sta.h> 67178354Ssam 68178354Ssam#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) 69178354Ssam 70178354Ssamstatic void adhoc_vattach(struct ieee80211vap *); 71178354Ssamstatic int adhoc_newstate(struct ieee80211vap *, enum ieee80211_state, int); 72192468Ssamstatic int adhoc_input(struct ieee80211_node *, struct mbuf *, int, int); 73178354Ssamstatic void adhoc_recv_mgmt(struct ieee80211_node *, struct mbuf *, 74192468Ssam int subtype, int, int); 75184276Ssamstatic void ahdemo_recv_mgmt(struct ieee80211_node *, struct mbuf *, 76192468Ssam int subtype, int, int); 77191546Ssamstatic void adhoc_recv_ctl(struct ieee80211_node *, struct mbuf *, int subtype); 78178354Ssam 79178354Ssamvoid 80178354Ssamieee80211_adhoc_attach(struct ieee80211com *ic) 81178354Ssam{ 82178354Ssam ic->ic_vattach[IEEE80211_M_IBSS] = adhoc_vattach; 83178354Ssam ic->ic_vattach[IEEE80211_M_AHDEMO] = adhoc_vattach; 84178354Ssam} 85178354Ssam 86178354Ssamvoid 87178354Ssamieee80211_adhoc_detach(struct ieee80211com *ic) 88178354Ssam{ 89178354Ssam} 90178354Ssam 91178354Ssamstatic void 92178354Ssamadhoc_vdetach(struct ieee80211vap *vap) 93178354Ssam{ 94178354Ssam} 95178354Ssam 96178354Ssamstatic void 97178354Ssamadhoc_vattach(struct ieee80211vap *vap) 98178354Ssam{ 99178354Ssam vap->iv_newstate = adhoc_newstate; 100178354Ssam vap->iv_input = adhoc_input; 101184276Ssam if (vap->iv_opmode == IEEE80211_M_IBSS) 102184276Ssam vap->iv_recv_mgmt = adhoc_recv_mgmt; 103184276Ssam else 104184276Ssam vap->iv_recv_mgmt = ahdemo_recv_mgmt; 105191546Ssam vap->iv_recv_ctl = adhoc_recv_ctl; 106178354Ssam vap->iv_opdetach = adhoc_vdetach; 107186904Ssam#ifdef IEEE80211_SUPPORT_TDMA 108186904Ssam /* 109186904Ssam * Throw control to tdma support. Note we do this 110186904Ssam * after setting up our callbacks so it can piggyback 111186904Ssam * on top of us. 112186904Ssam */ 113186904Ssam if (vap->iv_caps & IEEE80211_C_TDMA) 114186904Ssam ieee80211_tdma_vattach(vap); 115186904Ssam#endif 116178354Ssam} 117178354Ssam 118188466Ssamstatic void 119188466Ssamsta_leave(void *arg, struct ieee80211_node *ni) 120188466Ssam{ 121188466Ssam struct ieee80211vap *vap = arg; 122188466Ssam 123188466Ssam if (ni->ni_vap == vap && ni != vap->iv_bss) 124188466Ssam ieee80211_node_leave(ni); 125188466Ssam} 126188466Ssam 127178354Ssam/* 128178354Ssam * IEEE80211_M_IBSS+IEEE80211_M_AHDEMO vap state machine handler. 129178354Ssam */ 130178354Ssamstatic int 131178354Ssamadhoc_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 132178354Ssam{ 133178354Ssam struct ieee80211com *ic = vap->iv_ic; 134178354Ssam struct ieee80211_node *ni; 135178354Ssam enum ieee80211_state ostate; 136178354Ssam 137178354Ssam IEEE80211_LOCK_ASSERT(vap->iv_ic); 138178354Ssam 139178354Ssam ostate = vap->iv_state; 140178354Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", 141178354Ssam __func__, ieee80211_state_name[ostate], 142178354Ssam ieee80211_state_name[nstate], arg); 143178354Ssam vap->iv_state = nstate; /* state transition */ 144178354Ssam if (ostate != IEEE80211_S_SCAN) 145178354Ssam ieee80211_cancel_scan(vap); /* background scan */ 146178354Ssam ni = vap->iv_bss; /* NB: no reference held */ 147178354Ssam switch (nstate) { 148178354Ssam case IEEE80211_S_INIT: 149178354Ssam switch (ostate) { 150178354Ssam case IEEE80211_S_SCAN: 151178354Ssam ieee80211_cancel_scan(vap); 152178354Ssam break; 153178354Ssam default: 154178354Ssam break; 155178354Ssam } 156178354Ssam if (ostate != IEEE80211_S_INIT) { 157178354Ssam /* NB: optimize INIT -> INIT case */ 158178354Ssam ieee80211_reset_bss(vap); 159178354Ssam } 160178354Ssam break; 161178354Ssam case IEEE80211_S_SCAN: 162178354Ssam switch (ostate) { 163188466Ssam case IEEE80211_S_RUN: /* beacon miss */ 164188466Ssam /* purge station table; entries are stale */ 165188466Ssam ieee80211_iterate_nodes(&ic->ic_sta, sta_leave, vap); 166188466Ssam /* fall thru... */ 167178354Ssam case IEEE80211_S_INIT: 168178354Ssam if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && 169178354Ssam !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) { 170178354Ssam /* 171178354Ssam * Already have a channel; bypass the 172178354Ssam * scan and startup immediately. 173178354Ssam */ 174244078Sadrian ieee80211_create_ibss(vap, 175244078Sadrian ieee80211_ht_adjust_channel(ic, 176244078Sadrian vap->iv_des_chan, vap->iv_flags_ht)); 177178354Ssam break; 178178354Ssam } 179178354Ssam /* 180178354Ssam * Initiate a scan. We can come here as a result 181178354Ssam * of an IEEE80211_IOC_SCAN_REQ too in which case 182178354Ssam * the vap will be marked with IEEE80211_FEXT_SCANREQ 183178354Ssam * and the scan request parameters will be present 184178354Ssam * in iv_scanreq. Otherwise we do the default. 185178354Ssam */ 186178354Ssam if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { 187178354Ssam ieee80211_check_scan(vap, 188178354Ssam vap->iv_scanreq_flags, 189178354Ssam vap->iv_scanreq_duration, 190178354Ssam vap->iv_scanreq_mindwell, 191178354Ssam vap->iv_scanreq_maxdwell, 192178354Ssam vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); 193178354Ssam vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; 194178354Ssam } else 195178354Ssam ieee80211_check_scan_current(vap); 196178354Ssam break; 197178354Ssam case IEEE80211_S_SCAN: 198178354Ssam /* 199178354Ssam * This can happen because of a change in state 200178354Ssam * that requires a reset. Trigger a new scan 201178354Ssam * unless we're in manual roaming mode in which 202178354Ssam * case an application must issue an explicit request. 203178354Ssam */ 204178354Ssam if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) 205178354Ssam ieee80211_check_scan_current(vap); 206178354Ssam break; 207178354Ssam default: 208178354Ssam goto invalid; 209178354Ssam } 210178354Ssam break; 211178354Ssam case IEEE80211_S_RUN: 212178354Ssam if (vap->iv_flags & IEEE80211_F_WPA) { 213178354Ssam /* XXX validate prerequisites */ 214178354Ssam } 215178354Ssam switch (ostate) { 216178354Ssam case IEEE80211_S_SCAN: 217178354Ssam#ifdef IEEE80211_DEBUG 218178354Ssam if (ieee80211_msg_debug(vap)) { 219178354Ssam ieee80211_note(vap, 220178354Ssam "synchronized with %s ssid ", 221178354Ssam ether_sprintf(ni->ni_bssid)); 222178354Ssam ieee80211_print_essid(vap->iv_bss->ni_essid, 223178354Ssam ni->ni_esslen); 224178354Ssam /* XXX MCS/HT */ 225178354Ssam printf(" channel %d start %uMb\n", 226178354Ssam ieee80211_chan2ieee(ic, ic->ic_curchan), 227178354Ssam IEEE80211_RATE2MBS(ni->ni_txrate)); 228178354Ssam } 229178354Ssam#endif 230178354Ssam break; 231178354Ssam default: 232178354Ssam goto invalid; 233178354Ssam } 234178354Ssam /* 235178354Ssam * When 802.1x is not in use mark the port authorized 236178354Ssam * at this point so traffic can flow. 237178354Ssam */ 238178354Ssam if (ni->ni_authmode != IEEE80211_AUTH_8021X) 239178354Ssam ieee80211_node_authorize(ni); 240184345Ssam /* 241184345Ssam * Fake association when joining an existing bss. 242184345Ssam */ 243184345Ssam if (!IEEE80211_ADDR_EQ(ni->ni_macaddr, vap->iv_myaddr) && 244184345Ssam ic->ic_newassoc != NULL) 245184345Ssam ic->ic_newassoc(ni, ostate != IEEE80211_S_RUN); 246178354Ssam break; 247178354Ssam case IEEE80211_S_SLEEP: 248241138Sadrian vap->iv_sta_ps(vap, 0); 249178354Ssam break; 250178354Ssam default: 251178354Ssam invalid: 252184268Ssam IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, 253184268Ssam "%s: unexpected state transition %s -> %s\n", __func__, 254178354Ssam ieee80211_state_name[ostate], ieee80211_state_name[nstate]); 255178354Ssam break; 256178354Ssam } 257178354Ssam return 0; 258178354Ssam} 259178354Ssam 260178354Ssam/* 261178354Ssam * Decide if a received management frame should be 262178354Ssam * printed when debugging is enabled. This filters some 263178354Ssam * of the less interesting frames that come frequently 264178354Ssam * (e.g. beacons). 265178354Ssam */ 266178354Ssamstatic __inline int 267178354Ssamdoprint(struct ieee80211vap *vap, int subtype) 268178354Ssam{ 269178354Ssam switch (subtype) { 270178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: 271178354Ssam return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN); 272178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 273178354Ssam return 1; 274178354Ssam } 275178354Ssam return 1; 276178354Ssam} 277178354Ssam 278178354Ssam/* 279178354Ssam * Process a received frame. The node associated with the sender 280178354Ssam * should be supplied. If nothing was found in the node table then 281178354Ssam * the caller is assumed to supply a reference to iv_bss instead. 282178354Ssam * The RSSI and a timestamp are also supplied. The RSSI data is used 283178354Ssam * during AP scanning to select a AP to associate with; it can have 284178354Ssam * any units so long as values have consistent units and higher values 285178354Ssam * mean ``better signal''. The receive timestamp is currently not used 286178354Ssam * by the 802.11 layer. 287178354Ssam */ 288178354Ssamstatic int 289192468Ssamadhoc_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf) 290178354Ssam{ 291178354Ssam#define HAS_SEQ(type) ((type & 0x4) == 0) 292178354Ssam struct ieee80211vap *vap = ni->ni_vap; 293178354Ssam struct ieee80211com *ic = ni->ni_ic; 294178354Ssam struct ifnet *ifp = vap->iv_ifp; 295178354Ssam struct ieee80211_frame *wh; 296178354Ssam struct ieee80211_key *key; 297178354Ssam struct ether_header *eh; 298203422Srpaulo int hdrspace, need_tap = 1; /* mbuf need to be tapped. */ 299178354Ssam uint8_t dir, type, subtype, qos; 300178354Ssam uint8_t *bssid; 301178354Ssam uint16_t rxseq; 302178354Ssam 303183247Ssam if (m->m_flags & M_AMPDU_MPDU) { 304178354Ssam /* 305178354Ssam * Fastpath for A-MPDU reorder q resubmission. Frames 306183247Ssam * w/ M_AMPDU_MPDU marked have already passed through 307183247Ssam * here but were received out of order and been held on 308183247Ssam * the reorder queue. When resubmitted they are marked 309183247Ssam * with the M_AMPDU_MPDU flag and we can bypass most of 310183247Ssam * the normal processing. 311178354Ssam */ 312178354Ssam wh = mtod(m, struct ieee80211_frame *); 313178354Ssam type = IEEE80211_FC0_TYPE_DATA; 314178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 315178354Ssam subtype = IEEE80211_FC0_SUBTYPE_QOS; 316178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ 317178354Ssam goto resubmit_ampdu; 318178354Ssam } 319178354Ssam 320178354Ssam KASSERT(ni != NULL, ("null node")); 321178354Ssam ni->ni_inact = ni->ni_inact_reload; 322178354Ssam 323178354Ssam type = -1; /* undefined */ 324178354Ssam 325178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { 326178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 327178354Ssam ni->ni_macaddr, NULL, 328178354Ssam "too short (1): len %u", m->m_pkthdr.len); 329178354Ssam vap->iv_stats.is_rx_tooshort++; 330178354Ssam goto out; 331178354Ssam } 332178354Ssam /* 333178354Ssam * Bit of a cheat here, we use a pointer for a 3-address 334178354Ssam * frame format but don't reference fields past outside 335178354Ssam * ieee80211_frame_min w/o first validating the data is 336178354Ssam * present. 337178354Ssam */ 338178354Ssam wh = mtod(m, struct ieee80211_frame *); 339178354Ssam 340178354Ssam if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) != 341178354Ssam IEEE80211_FC0_VERSION_0) { 342178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 343191547Ssam ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x", 344191547Ssam wh->i_fc[0], wh->i_fc[1]); 345178354Ssam vap->iv_stats.is_rx_badversion++; 346178354Ssam goto err; 347178354Ssam } 348178354Ssam 349178354Ssam dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; 350178354Ssam type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 351178354Ssam subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 352178354Ssam if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 353178354Ssam if (dir != IEEE80211_FC1_DIR_NODS) 354178354Ssam bssid = wh->i_addr1; 355178354Ssam else if (type == IEEE80211_FC0_TYPE_CTL) 356178354Ssam bssid = wh->i_addr1; 357178354Ssam else { 358178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 359178354Ssam IEEE80211_DISCARD_MAC(vap, 360178354Ssam IEEE80211_MSG_ANY, ni->ni_macaddr, 361178354Ssam NULL, "too short (2): len %u", 362178354Ssam m->m_pkthdr.len); 363178354Ssam vap->iv_stats.is_rx_tooshort++; 364178354Ssam goto out; 365178354Ssam } 366178354Ssam bssid = wh->i_addr3; 367178354Ssam } 368178354Ssam /* 369178354Ssam * Validate the bssid. 370178354Ssam */ 371178354Ssam if (!IEEE80211_ADDR_EQ(bssid, vap->iv_bss->ni_bssid) && 372178354Ssam !IEEE80211_ADDR_EQ(bssid, ifp->if_broadcastaddr)) { 373178354Ssam /* not interested in */ 374178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 375178354Ssam bssid, NULL, "%s", "not to bss"); 376178354Ssam vap->iv_stats.is_rx_wrongbss++; 377178354Ssam goto out; 378178354Ssam } 379178354Ssam /* 380178354Ssam * Data frame, cons up a node when it doesn't 381178354Ssam * exist. This should probably done after an ACL check. 382178354Ssam */ 383178354Ssam if (type == IEEE80211_FC0_TYPE_DATA && 384178354Ssam ni == vap->iv_bss && 385178354Ssam !IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 386178354Ssam /* 387186904Ssam * Beware of frames that come in too early; we 388186904Ssam * can receive broadcast frames and creating sta 389186904Ssam * entries will blow up because there is no bss 390186904Ssam * channel yet. 391186904Ssam */ 392186904Ssam if (vap->iv_state != IEEE80211_S_RUN) { 393186904Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 394186904Ssam wh, "data", "not in RUN state (%s)", 395186904Ssam ieee80211_state_name[vap->iv_state]); 396186904Ssam vap->iv_stats.is_rx_badstate++; 397186904Ssam goto err; 398186904Ssam } 399186904Ssam /* 400178354Ssam * Fake up a node for this newly 401178354Ssam * discovered member of the IBSS. 402178354Ssam */ 403178354Ssam ni = ieee80211_fakeup_adhoc_node(vap, wh->i_addr2); 404178354Ssam if (ni == NULL) { 405178354Ssam /* NB: stat kept for alloc failure */ 406178354Ssam goto err; 407178354Ssam } 408178354Ssam } 409178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 410192468Ssam ni->ni_noise = nf; 411178354Ssam if (HAS_SEQ(type)) { 412178354Ssam uint8_t tid = ieee80211_gettid(wh); 413178354Ssam if (IEEE80211_QOS_HAS_SEQ(wh) && 414178354Ssam TID_TO_WME_AC(tid) >= WME_AC_VI) 415178354Ssam ic->ic_wme.wme_hipri_traffic++; 416178354Ssam rxseq = le16toh(*(uint16_t *)wh->i_seq); 417221418Sadrian if (! ieee80211_check_rxseq(ni, wh)) { 418178354Ssam /* duplicate, discard */ 419178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 420178354Ssam bssid, "duplicate", 421178354Ssam "seqno <%u,%u> fragno <%u,%u> tid %u", 422178354Ssam rxseq >> IEEE80211_SEQ_SEQ_SHIFT, 423178354Ssam ni->ni_rxseqs[tid] >> 424178354Ssam IEEE80211_SEQ_SEQ_SHIFT, 425178354Ssam rxseq & IEEE80211_SEQ_FRAG_MASK, 426178354Ssam ni->ni_rxseqs[tid] & 427178354Ssam IEEE80211_SEQ_FRAG_MASK, 428178354Ssam tid); 429178354Ssam vap->iv_stats.is_rx_dup++; 430178354Ssam IEEE80211_NODE_STAT(ni, rx_dup); 431178354Ssam goto out; 432178354Ssam } 433178354Ssam ni->ni_rxseqs[tid] = rxseq; 434178354Ssam } 435178354Ssam } 436178354Ssam 437178354Ssam switch (type) { 438178354Ssam case IEEE80211_FC0_TYPE_DATA: 439178354Ssam hdrspace = ieee80211_hdrspace(ic, wh); 440178354Ssam if (m->m_len < hdrspace && 441178354Ssam (m = m_pullup(m, hdrspace)) == NULL) { 442178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 443178354Ssam ni->ni_macaddr, NULL, 444178354Ssam "data too short: expecting %u", hdrspace); 445178354Ssam vap->iv_stats.is_rx_tooshort++; 446178354Ssam goto out; /* XXX */ 447178354Ssam } 448178354Ssam if (dir != IEEE80211_FC1_DIR_NODS) { 449178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 450178354Ssam wh, "data", "incorrect dir 0x%x", dir); 451178354Ssam vap->iv_stats.is_rx_wrongdir++; 452178354Ssam goto out; 453178354Ssam } 454178354Ssam /* XXX no power-save support */ 455178354Ssam 456178354Ssam /* 457183247Ssam * Handle A-MPDU re-ordering. If the frame is to be 458183247Ssam * processed directly then ieee80211_ampdu_reorder 459178354Ssam * will return 0; otherwise it has consumed the mbuf 460178354Ssam * and we should do nothing more with it. 461178354Ssam */ 462183247Ssam if ((m->m_flags & M_AMPDU) && 463178354Ssam ieee80211_ampdu_reorder(ni, m) != 0) { 464178354Ssam m = NULL; 465178354Ssam goto out; 466178354Ssam } 467178354Ssam resubmit_ampdu: 468178354Ssam 469178354Ssam /* 470178354Ssam * Handle privacy requirements. Note that we 471178354Ssam * must not be preempted from here until after 472178354Ssam * we (potentially) call ieee80211_crypto_demic; 473178354Ssam * otherwise we may violate assumptions in the 474178354Ssam * crypto cipher modules used to do delayed update 475178354Ssam * of replay sequence numbers. 476178354Ssam */ 477262007Skevlo if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 478178354Ssam if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { 479178354Ssam /* 480178354Ssam * Discard encrypted frames when privacy is off. 481178354Ssam */ 482178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 483178354Ssam wh, "WEP", "%s", "PRIVACY off"); 484178354Ssam vap->iv_stats.is_rx_noprivacy++; 485178354Ssam IEEE80211_NODE_STAT(ni, rx_noprivacy); 486178354Ssam goto out; 487178354Ssam } 488178354Ssam key = ieee80211_crypto_decap(ni, m, hdrspace); 489178354Ssam if (key == NULL) { 490178354Ssam /* NB: stats+msgs handled in crypto_decap */ 491178354Ssam IEEE80211_NODE_STAT(ni, rx_wepfail); 492178354Ssam goto out; 493178354Ssam } 494178354Ssam wh = mtod(m, struct ieee80211_frame *); 495262007Skevlo wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED; 496178354Ssam } else { 497178354Ssam /* XXX M_WEP and IEEE80211_F_PRIVACY */ 498178354Ssam key = NULL; 499178354Ssam } 500178354Ssam 501178354Ssam /* 502178354Ssam * Save QoS bits for use below--before we strip the header. 503178354Ssam */ 504178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_QOS) { 505178354Ssam qos = (dir == IEEE80211_FC1_DIR_DSTODS) ? 506178354Ssam ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] : 507178354Ssam ((struct ieee80211_qosframe *)wh)->i_qos[0]; 508178354Ssam } else 509178354Ssam qos = 0; 510178354Ssam 511178354Ssam /* 512178354Ssam * Next up, any fragmentation. 513178354Ssam */ 514178354Ssam if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 515178354Ssam m = ieee80211_defrag(ni, m, hdrspace); 516178354Ssam if (m == NULL) { 517178354Ssam /* Fragment dropped or frame not complete yet */ 518178354Ssam goto out; 519178354Ssam } 520178354Ssam } 521178354Ssam wh = NULL; /* no longer valid, catch any uses */ 522178354Ssam 523178354Ssam /* 524178354Ssam * Next strip any MSDU crypto bits. 525178354Ssam */ 526178354Ssam if (key != NULL && !ieee80211_crypto_demic(vap, key, m, 0)) { 527178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 528178354Ssam ni->ni_macaddr, "data", "%s", "demic error"); 529178354Ssam vap->iv_stats.is_rx_demicfail++; 530178354Ssam IEEE80211_NODE_STAT(ni, rx_demicfail); 531178354Ssam goto out; 532178354Ssam } 533178354Ssam 534178354Ssam /* copy to listener after decrypt */ 535192468Ssam if (ieee80211_radiotap_active_vap(vap)) 536192468Ssam ieee80211_radiotap_rx(vap, m); 537178354Ssam need_tap = 0; 538178354Ssam 539178354Ssam /* 540178354Ssam * Finally, strip the 802.11 header. 541178354Ssam */ 542178354Ssam m = ieee80211_decap(vap, m, hdrspace); 543178354Ssam if (m == NULL) { 544178354Ssam /* XXX mask bit to check for both */ 545178354Ssam /* don't count Null data frames as errors */ 546178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || 547178354Ssam subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) 548178354Ssam goto out; 549178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 550178354Ssam ni->ni_macaddr, "data", "%s", "decap error"); 551178354Ssam vap->iv_stats.is_rx_decap++; 552178354Ssam IEEE80211_NODE_STAT(ni, rx_decap); 553178354Ssam goto err; 554178354Ssam } 555178354Ssam eh = mtod(m, struct ether_header *); 556178354Ssam if (!ieee80211_node_is_authorized(ni)) { 557178354Ssam /* 558178354Ssam * Deny any non-PAE frames received prior to 559178354Ssam * authorization. For open/shared-key 560178354Ssam * authentication the port is mark authorized 561178354Ssam * after authentication completes. For 802.1x 562178354Ssam * the port is not marked authorized by the 563178354Ssam * authenticator until the handshake has completed. 564178354Ssam */ 565178354Ssam if (eh->ether_type != htons(ETHERTYPE_PAE)) { 566178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, 567178354Ssam eh->ether_shost, "data", 568178354Ssam "unauthorized port: ether type 0x%x len %u", 569178354Ssam eh->ether_type, m->m_pkthdr.len); 570178354Ssam vap->iv_stats.is_rx_unauth++; 571178354Ssam IEEE80211_NODE_STAT(ni, rx_unauth); 572178354Ssam goto err; 573178354Ssam } 574178354Ssam } else { 575178354Ssam /* 576178354Ssam * When denying unencrypted frames, discard 577178354Ssam * any non-PAE frames received without encryption. 578178354Ssam */ 579178354Ssam if ((vap->iv_flags & IEEE80211_F_DROPUNENC) && 580178354Ssam (key == NULL && (m->m_flags & M_WEP) == 0) && 581178354Ssam eh->ether_type != htons(ETHERTYPE_PAE)) { 582178354Ssam /* 583178354Ssam * Drop unencrypted frames. 584178354Ssam */ 585178354Ssam vap->iv_stats.is_rx_unencrypted++; 586178354Ssam IEEE80211_NODE_STAT(ni, rx_unencrypted); 587178354Ssam goto out; 588178354Ssam } 589178354Ssam } 590178354Ssam /* XXX require HT? */ 591178354Ssam if (qos & IEEE80211_QOS_AMSDU) { 592178354Ssam m = ieee80211_decap_amsdu(ni, m); 593178354Ssam if (m == NULL) 594178354Ssam return IEEE80211_FC0_TYPE_DATA; 595190391Ssam } else { 596190391Ssam#ifdef IEEE80211_SUPPORT_SUPERG 597190391Ssam m = ieee80211_decap_fastframe(vap, ni, m); 598190391Ssam if (m == NULL) 599178354Ssam return IEEE80211_FC0_TYPE_DATA; 600190391Ssam#endif 601178354Ssam } 602178354Ssam if (dir == IEEE80211_FC1_DIR_DSTODS && ni->ni_wdsvap != NULL) 603178354Ssam ieee80211_deliver_data(ni->ni_wdsvap, ni, m); 604178354Ssam else 605178354Ssam ieee80211_deliver_data(vap, ni, m); 606178354Ssam return IEEE80211_FC0_TYPE_DATA; 607178354Ssam 608178354Ssam case IEEE80211_FC0_TYPE_MGT: 609178354Ssam vap->iv_stats.is_rx_mgmt++; 610178354Ssam IEEE80211_NODE_STAT(ni, rx_mgmt); 611178354Ssam if (dir != IEEE80211_FC1_DIR_NODS) { 612178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 613178354Ssam wh, "data", "incorrect dir 0x%x", dir); 614178354Ssam vap->iv_stats.is_rx_wrongdir++; 615178354Ssam goto err; 616178354Ssam } 617178354Ssam if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { 618178354Ssam IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, 619178354Ssam ni->ni_macaddr, "mgt", "too short: len %u", 620178354Ssam m->m_pkthdr.len); 621178354Ssam vap->iv_stats.is_rx_tooshort++; 622178354Ssam goto out; 623178354Ssam } 624178354Ssam#ifdef IEEE80211_DEBUG 625178354Ssam if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) || 626178354Ssam ieee80211_msg_dumppkts(vap)) { 627178354Ssam if_printf(ifp, "received %s from %s rssi %d\n", 628178354Ssam ieee80211_mgt_subtype_name[subtype >> 629178354Ssam IEEE80211_FC0_SUBTYPE_SHIFT], 630178354Ssam ether_sprintf(wh->i_addr2), rssi); 631178354Ssam } 632178354Ssam#endif 633262007Skevlo if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 634178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 635178354Ssam wh, NULL, "%s", "WEP set but not permitted"); 636178354Ssam vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ 637178354Ssam goto out; 638178354Ssam } 639192468Ssam vap->iv_recv_mgmt(ni, m, subtype, rssi, nf); 640191534Ssam goto out; 641178354Ssam 642178354Ssam case IEEE80211_FC0_TYPE_CTL: 643178354Ssam vap->iv_stats.is_rx_ctl++; 644178354Ssam IEEE80211_NODE_STAT(ni, rx_ctrl); 645191546Ssam vap->iv_recv_ctl(ni, m, subtype); 646178354Ssam goto out; 647191754Ssam 648178354Ssam default: 649178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 650178354Ssam wh, "bad", "frame type 0x%x", type); 651178354Ssam /* should not come here */ 652178354Ssam break; 653178354Ssam } 654178354Ssamerr: 655178354Ssam ifp->if_ierrors++; 656178354Ssamout: 657178354Ssam if (m != NULL) { 658192765Ssam if (need_tap && ieee80211_radiotap_active_vap(vap)) 659192468Ssam ieee80211_radiotap_rx(vap, m); 660178354Ssam m_freem(m); 661178354Ssam } 662178354Ssam return type; 663178354Ssam} 664178354Ssam 665178354Ssamstatic int 666178354Ssamis11bclient(const uint8_t *rates, const uint8_t *xrates) 667178354Ssam{ 668178354Ssam static const uint32_t brates = (1<<2*1)|(1<<2*2)|(1<<11)|(1<<2*11); 669178354Ssam int i; 670178354Ssam 671178354Ssam /* NB: the 11b clients we care about will not have xrates */ 672178354Ssam if (xrates != NULL || rates == NULL) 673178354Ssam return 0; 674178354Ssam for (i = 0; i < rates[1]; i++) { 675178354Ssam int r = rates[2+i] & IEEE80211_RATE_VAL; 676178354Ssam if (r > 2*11 || ((1<<r) & brates) == 0) 677178354Ssam return 0; 678178354Ssam } 679178354Ssam return 1; 680178354Ssam} 681178354Ssam 682178354Ssamstatic void 683178354Ssamadhoc_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, 684192468Ssam int subtype, int rssi, int nf) 685178354Ssam{ 686178354Ssam struct ieee80211vap *vap = ni->ni_vap; 687178354Ssam struct ieee80211com *ic = ni->ni_ic; 688178354Ssam struct ieee80211_frame *wh; 689178354Ssam uint8_t *frm, *efrm, *sfrm; 690178354Ssam uint8_t *ssid, *rates, *xrates; 691246930Sadrian#if 0 692245928Sadrian int ht_state_change = 0; 693246930Sadrian#endif 694178354Ssam 695178354Ssam wh = mtod(m0, struct ieee80211_frame *); 696178354Ssam frm = (uint8_t *)&wh[1]; 697178354Ssam efrm = mtod(m0, uint8_t *) + m0->m_len; 698178354Ssam switch (subtype) { 699178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 700178354Ssam case IEEE80211_FC0_SUBTYPE_BEACON: { 701178354Ssam struct ieee80211_scanparams scan; 702178354Ssam /* 703178354Ssam * We process beacon/probe response 704178354Ssam * frames to discover neighbors. 705178354Ssam */ 706178354Ssam if (ieee80211_parse_beacon(ni, m0, &scan) != 0) 707178354Ssam return; 708178354Ssam /* 709178354Ssam * Count frame now that we know it's to be processed. 710178354Ssam */ 711178354Ssam if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 712178354Ssam vap->iv_stats.is_rx_beacon++; /* XXX remove */ 713178354Ssam IEEE80211_NODE_STAT(ni, rx_beacons); 714178354Ssam } else 715178354Ssam IEEE80211_NODE_STAT(ni, rx_proberesp); 716178354Ssam /* 717178354Ssam * If scanning, just pass information to the scan module. 718178354Ssam */ 719178354Ssam if (ic->ic_flags & IEEE80211_F_SCAN) { 720178354Ssam if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { 721178354Ssam /* 722178354Ssam * Actively scanning a channel marked passive; 723178354Ssam * send a probe request now that we know there 724178354Ssam * is 802.11 traffic present. 725178354Ssam * 726178354Ssam * XXX check if the beacon we recv'd gives 727178354Ssam * us what we need and suppress the probe req 728178354Ssam */ 729178354Ssam ieee80211_probe_curchan(vap, 1); 730178354Ssam ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; 731178354Ssam } 732192468Ssam ieee80211_add_scan(vap, &scan, wh, subtype, rssi, nf); 733178354Ssam return; 734178354Ssam } 735178354Ssam if (scan.capinfo & IEEE80211_CAPINFO_IBSS) { 736178354Ssam if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { 737178354Ssam /* 738178354Ssam * Create a new entry in the neighbor table. 739178354Ssam */ 740178354Ssam ni = ieee80211_add_neighbor(vap, wh, &scan); 741178354Ssam } else if (ni->ni_capinfo == 0) { 742178354Ssam /* 743178354Ssam * Update faked node created on transmit. 744178354Ssam * Note this also updates the tsf. 745178354Ssam */ 746178354Ssam ieee80211_init_neighbor(ni, wh, &scan); 747178354Ssam } else { 748178354Ssam /* 749178354Ssam * Record tsf for potential resync. 750178354Ssam */ 751178354Ssam memcpy(ni->ni_tstamp.data, scan.tstamp, 752178354Ssam sizeof(ni->ni_tstamp)); 753178354Ssam } 754245928Sadrian /* 755245928Sadrian * This isn't enabled yet - otherwise it would 756245928Sadrian * update the HT parameters and channel width 757245928Sadrian * from any node, which could lead to lots of 758245928Sadrian * strange behaviour if the 11n nodes aren't 759245928Sadrian * exactly configured to match. 760245928Sadrian */ 761245928Sadrian#if 0 762245928Sadrian if (scan.htcap != NULL && scan.htinfo != NULL && 763245928Sadrian (vap->iv_flags_ht & IEEE80211_FHT_HT)) { 764245928Sadrian if (ieee80211_ht_updateparams(ni, 765245928Sadrian scan.htcap, scan.htinfo)) 766245928Sadrian ht_state_change = 1; 767245928Sadrian } 768245928Sadrian#endif 769178354Ssam if (ni != NULL) { 770178354Ssam IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); 771192468Ssam ni->ni_noise = nf; 772178354Ssam } 773246927Sadrian /* 774246927Sadrian * Same here - the channel width change should 775246927Sadrian * be applied to the specific peer node, not 776246927Sadrian * to the ic. Ie, the interface configuration 777246927Sadrian * should stay in its current channel width; 778246927Sadrian * but it should change the rate control and 779246927Sadrian * any queued frames for the given node only. 780246927Sadrian * 781246927Sadrian * Since there's no (current) way to inform 782246927Sadrian * the driver that a channel width change has 783246927Sadrian * occured for a single node, just stub this 784246927Sadrian * out. 785246927Sadrian */ 786246927Sadrian#if 0 787245928Sadrian if (ht_state_change) 788245928Sadrian ieee80211_update_chw(ic); 789246927Sadrian#endif 790178354Ssam } 791178354Ssam break; 792178354Ssam } 793178354Ssam 794178354Ssam case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 795178354Ssam if (vap->iv_state != IEEE80211_S_RUN) { 796184268Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 797184268Ssam wh, NULL, "wrong state %s", 798184268Ssam ieee80211_state_name[vap->iv_state]); 799178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 800178354Ssam return; 801178354Ssam } 802178354Ssam if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { 803178354Ssam /* frame must be directed */ 804184268Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 805184268Ssam wh, NULL, "%s", "not unicast"); 806178354Ssam vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ 807178354Ssam return; 808178354Ssam } 809178354Ssam 810178354Ssam /* 811178354Ssam * prreq frame format 812178354Ssam * [tlv] ssid 813178354Ssam * [tlv] supported rates 814178354Ssam * [tlv] extended supported rates 815178354Ssam */ 816178354Ssam ssid = rates = xrates = NULL; 817178354Ssam sfrm = frm; 818178354Ssam while (efrm - frm > 1) { 819178354Ssam IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 820178354Ssam switch (*frm) { 821178354Ssam case IEEE80211_ELEMID_SSID: 822178354Ssam ssid = frm; 823178354Ssam break; 824178354Ssam case IEEE80211_ELEMID_RATES: 825178354Ssam rates = frm; 826178354Ssam break; 827178354Ssam case IEEE80211_ELEMID_XRATES: 828178354Ssam xrates = frm; 829178354Ssam break; 830178354Ssam } 831178354Ssam frm += frm[1] + 2; 832178354Ssam } 833178354Ssam IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); 834178354Ssam if (xrates != NULL) 835178354Ssam IEEE80211_VERIFY_ELEMENT(xrates, 836178354Ssam IEEE80211_RATE_MAXSIZE - rates[1], return); 837178354Ssam IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); 838178354Ssam IEEE80211_VERIFY_SSID(vap->iv_bss, ssid, return); 839178354Ssam if ((vap->iv_flags & IEEE80211_F_HIDESSID) && ssid[1] == 0) { 840178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 841178354Ssam wh, NULL, 842178354Ssam "%s", "no ssid with ssid suppression enabled"); 843178354Ssam vap->iv_stats.is_rx_ssidmismatch++; /*XXX*/ 844178354Ssam return; 845178354Ssam } 846178354Ssam 847178354Ssam /* XXX find a better class or define it's own */ 848178354Ssam IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, 849178354Ssam "%s", "recv probe req"); 850178354Ssam /* 851178354Ssam * Some legacy 11b clients cannot hack a complete 852178354Ssam * probe response frame. When the request includes 853178354Ssam * only a bare-bones rate set, communicate this to 854178354Ssam * the transmit side. 855178354Ssam */ 856178354Ssam ieee80211_send_proberesp(vap, wh->i_addr2, 857178354Ssam is11bclient(rates, xrates) ? IEEE80211_SEND_LEGACY_11B : 0); 858178354Ssam break; 859178354Ssam 860218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ACTION: 861218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 862218958Sbschmidt if (ni == vap->iv_bss) { 863184268Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 864218958Sbschmidt wh, NULL, "%s", "unknown node"); 865218958Sbschmidt vap->iv_stats.is_rx_mgtdiscard++; 866218958Sbschmidt } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && 867218958Sbschmidt !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 868218958Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 869218958Sbschmidt wh, NULL, "%s", "not for us"); 870218958Sbschmidt vap->iv_stats.is_rx_mgtdiscard++; 871218958Sbschmidt } else if (vap->iv_state != IEEE80211_S_RUN) { 872218958Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 873184268Ssam wh, NULL, "wrong state %s", 874184268Ssam ieee80211_state_name[vap->iv_state]); 875178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 876218958Sbschmidt } else { 877218958Sbschmidt if (ieee80211_parse_action(ni, m0) == 0) 878218958Sbschmidt (void)ic->ic_recv_action(ni, wh, frm, efrm); 879178354Ssam } 880178354Ssam break; 881178354Ssam 882178354Ssam case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 883218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 884178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 885178354Ssam case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 886218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ATIM: 887218927Sbschmidt case IEEE80211_FC0_SUBTYPE_DISASSOC: 888218927Sbschmidt case IEEE80211_FC0_SUBTYPE_AUTH: 889178354Ssam case IEEE80211_FC0_SUBTYPE_DEAUTH: 890184268Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 891218927Sbschmidt wh, NULL, "%s", "not handled"); 892178354Ssam vap->iv_stats.is_rx_mgtdiscard++; 893218927Sbschmidt break; 894178354Ssam 895178354Ssam default: 896178354Ssam IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 897218927Sbschmidt wh, "mgt", "subtype 0x%x not handled", subtype); 898178354Ssam vap->iv_stats.is_rx_badsubtype++; 899178354Ssam break; 900178354Ssam } 901178354Ssam} 902178354Ssam#undef IEEE80211_VERIFY_LENGTH 903178354Ssam#undef IEEE80211_VERIFY_ELEMENT 904184276Ssam 905184276Ssamstatic void 906184276Ssamahdemo_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, 907192468Ssam int subtype, int rssi, int nf) 908184276Ssam{ 909184276Ssam struct ieee80211vap *vap = ni->ni_vap; 910184276Ssam struct ieee80211com *ic = ni->ni_ic; 911218927Sbschmidt struct ieee80211_frame *wh; 912184276Ssam 913184276Ssam /* 914184276Ssam * Process management frames when scanning; useful for doing 915184276Ssam * a site-survey. 916184276Ssam */ 917184276Ssam if (ic->ic_flags & IEEE80211_F_SCAN) 918192468Ssam adhoc_recv_mgmt(ni, m0, subtype, rssi, nf); 919218927Sbschmidt else { 920218927Sbschmidt wh = mtod(m0, struct ieee80211_frame *); 921218927Sbschmidt switch (subtype) { 922218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: 923218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: 924218927Sbschmidt case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: 925218927Sbschmidt case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: 926218927Sbschmidt case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 927218927Sbschmidt case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 928218927Sbschmidt case IEEE80211_FC0_SUBTYPE_BEACON: 929218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ATIM: 930218927Sbschmidt case IEEE80211_FC0_SUBTYPE_DISASSOC: 931218927Sbschmidt case IEEE80211_FC0_SUBTYPE_AUTH: 932218927Sbschmidt case IEEE80211_FC0_SUBTYPE_DEAUTH: 933218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ACTION: 934218927Sbschmidt case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: 935218927Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, 936218927Sbschmidt wh, NULL, "%s", "not handled"); 937218927Sbschmidt vap->iv_stats.is_rx_mgtdiscard++; 938218927Sbschmidt break; 939218927Sbschmidt default: 940218927Sbschmidt IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 941218927Sbschmidt wh, "mgt", "subtype 0x%x not handled", subtype); 942218927Sbschmidt vap->iv_stats.is_rx_badsubtype++; 943218927Sbschmidt break; 944218927Sbschmidt } 945218927Sbschmidt } 946184276Ssam} 947191546Ssam 948191546Ssamstatic void 949205277Srpauloadhoc_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) 950191546Ssam{ 951205277Srpaulo 952205277Srpaulo switch (subtype) { 953205277Srpaulo case IEEE80211_FC0_SUBTYPE_BAR: 954205277Srpaulo ieee80211_recv_bar(ni, m); 955205277Srpaulo break; 956205277Srpaulo } 957191546Ssam} 958