static void tdma_beacon_miss(struct ieee80211vap *vap) { struct ieee80211_tdma_state *ts = vap->iv_tdma; KASSERT((vap->iv_ic->ic_flags & IEEE80211_F_SCAN) == 0, ("scanning")); KASSERT(vap->iv_state == IEEE80211_S_RUN, ("wrong state %d", vap->iv_state)); IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_TDMA | IEEE80211_MSG_DEBUG, "beacon miss, mode %u state %s\n", vap->iv_opmode, ieee80211_state_name[vap->iv_state]); callout_stop(&vap->iv_swbmiss); if (ts->tdma_peer != NULL) { /* XXX? can this be null? */ ieee80211_notify_node_leave(vap->iv_bss); ts->tdma_peer = NULL; /* * Treat beacon miss like an associate failure wrt the * scan policy; this forces the entry in the scan cache * to be ignored after several tries. */ ieee80211_scan_assoc_fail(vap, vap->iv_bss->ni_macaddr, IEEE80211_STATUS_TIMEOUT); } #if 0 ts->tdma_inuse = 0; /* clear slot usage */ #endif ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); }
void ieee80211_watchdog(struct ieee80211com *ic) { struct ieee80211_node_table *nt; int need_inact_timer = 0; if (ic->ic_state != IEEE80211_S_INIT) { if (ic->ic_mgt_timer && --ic->ic_mgt_timer == 0) ieee80211_new_state(ic, IEEE80211_S_SCAN, 0); nt = &ic->ic_scan; if (nt->nt_inact_timer) { if (--nt->nt_inact_timer == 0) nt->nt_timeout(nt); need_inact_timer += nt->nt_inact_timer; } nt = &ic->ic_sta; if (nt->nt_inact_timer) { if (--nt->nt_inact_timer == 0) nt->nt_timeout(nt); need_inact_timer += nt->nt_inact_timer; } } if (ic->ic_mgt_timer != 0 || need_inact_timer) ic->ic_ifp->if_timer = 1; }
void an_stop(struct ifnet *ifp, int disable) { struct an_softc *sc = ifp->if_softc; int i, s; if (!sc->sc_enabled) return; DPRINTF(("an_stop: disable %d\n", disable)); s = splnet(); ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); if (!sc->sc_invalid) { an_cmd(sc, AN_CMD_FORCE_SYNCLOSS, 0); CSR_WRITE_2(sc, AN_INT_EN, 0); an_cmd(sc, AN_CMD_DISABLE, 0); for (i = 0; i < AN_TX_RING_CNT; i++) an_cmd(sc, AN_CMD_DEALLOC_MEM, sc->sc_txd[i].d_fid); } sc->sc_tx_timer = 0; ifp->if_timer = 0; ifp->if_flags &= ~IFF_RUNNING; ifq_clr_oactive(&ifp->if_snd); if (disable) { if (sc->sc_disable) (*sc->sc_disable)(sc); sc->sc_enabled = 0; } splx(s); }
/* * Switch to the next channel marked for scanning. */ void ieee80211_next_scan(struct ifnet *ifp) { struct ieee80211com *ic = (void *)ifp; struct ieee80211_channel *chan; chan = ic->ic_bss->ni_chan; for (;;) { if (++chan > &ic->ic_channels[IEEE80211_CHAN_MAX]) chan = &ic->ic_channels[0]; if (isset(ic->ic_chan_scan, ieee80211_chan2ieee(ic, chan))) { /* * Ignore channels marked passive-only * during an active scan. */ if ((ic->ic_flags & IEEE80211_F_ASCAN) == 0 || (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) break; } if (chan == ic->ic_bss->ni_chan) { ieee80211_end_scan(ifp); return; } } clrbit(ic->ic_chan_scan, ieee80211_chan2ieee(ic, chan)); DPRINTF(("chan %d->%d\n", ieee80211_chan2ieee(ic, ic->ic_bss->ni_chan), ieee80211_chan2ieee(ic, chan))); ic->ic_bss->ni_chan = chan; ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); }
void ieee80211_create_ibss(struct ieee80211com* ic, struct ieee80211_channel *chan) { struct ieee80211_node *ni; struct ifnet *ifp = &ic->ic_if; ni = ic->ic_bss; if (ifp->if_flags & IFF_DEBUG) printf("%s: creating ibss\n", ifp->if_xname); ic->ic_flags |= IEEE80211_F_SIBSS; ni->ni_chan = chan; ni->ni_rates = ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); if (ic->ic_opmode == IEEE80211_M_IBSS) { if ((ic->ic_flags & IEEE80211_F_DESBSSID) != 0) IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_des_bssid); else ni->ni_bssid[0] |= 0x02; /* local bit for IBSS */ } ni->ni_esslen = ic->ic_des_esslen; memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); ni->ni_rssi = 0; ni->ni_rstamp = 0; memset(ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); ni->ni_intval = ic->ic_lintval; ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; if (ic->ic_flags & IEEE80211_F_WEPON) ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; if (ic->ic_phytype == IEEE80211_T_FH) { ni->ni_fhdwell = 200; /* XXX */ ni->ni_fhindex = 1; } ieee80211_new_state(ic, IEEE80211_S_RUN, -1); }
void ieee80211_watchdog(struct ifnet *ifp) { struct ieee80211com *ic = (void *)ifp; if (ic->ic_mgt_timer && --ic->ic_mgt_timer == 0) ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); if (ic->ic_mgt_timer != 0) ifp->if_timer = 1; }
static void cac_timeout_callout(void *arg) { struct ieee80211vap *vap = arg; struct ieee80211com *ic; struct ieee80211_dfs_state *dfs; int i; wlan_serialize_enter(); ic = vap->iv_ic; dfs = &ic->ic_dfs; if (vap->iv_state != IEEE80211_S_CAC) { /* NB: just in case */ wlan_serialize_exit(); return; } /* * When radar is detected during a CAC we are woken * up prematurely to switch to a new channel. * Check the channel to decide how to act. */ if (IEEE80211_IS_CHAN_RADAR(ic->ic_curchan)) { ieee80211_notify_cac(ic, ic->ic_curchan, IEEE80211_NOTIFY_CAC_RADAR); if_printf(vap->iv_ifp, "CAC timer on channel %u (%u MHz) stopped due to radar\n", ic->ic_curchan->ic_ieee, ic->ic_curchan->ic_freq); /* XXX clobbers any existing desired channel */ /* NB: dfs->newchan may be NULL, that's ok */ vap->iv_des_chan = dfs->newchan; /* XXX recursive lock need ieee80211_new_state_locked */ ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); } else { if_printf(vap->iv_ifp, "CAC timer on channel %u (%u MHz) expired; " "no radar detected\n", ic->ic_curchan->ic_ieee, ic->ic_curchan->ic_freq); /* * Mark all channels with the current frequency * as having completed CAC; this keeps us from * doing it again until we change channels. */ for (i = 0; i < ic->ic_nchans; i++) { struct ieee80211_channel *c = &ic->ic_channels[i]; if (c->ic_freq == ic->ic_curchan->ic_freq) c->ic_state |= IEEE80211_CHANSTATE_CACDONE; } ieee80211_notify_cac(ic, ic->ic_curchan, IEEE80211_NOTIFY_CAC_EXPIRE); ieee80211_cac_completeswitch(vap); } wlan_serialize_exit(); }
void an_linkstat_intr(struct an_softc *sc) { struct ieee80211com *ic = &sc->sc_ic; u_int16_t status; status = CSR_READ_2(sc, AN_LINKSTAT); CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_LINKSTAT); DPRINTF(("an_linkstat_intr: status 0x%x\n", status)); if (status == AN_LINKSTAT_ASSOCIATED) { if (ic->ic_state != IEEE80211_S_RUN #ifndef IEEE80211_STA_ONLY || ic->ic_opmode == IEEE80211_M_IBSS #endif ) ieee80211_new_state(ic, IEEE80211_S_RUN, -1); } else { if (ic->ic_opmode == IEEE80211_M_STA) ieee80211_new_state(ic, IEEE80211_S_INIT, -1); } }
int ieee80211_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct ieee80211com *ic = (void *)ifp; struct ifreq *ifr = (struct ifreq *)data; int i, error = 0; struct ieee80211_nwid nwid; struct ieee80211_wpapsk *psk; struct ieee80211_wmmparams *wmm; struct ieee80211_power *power; struct ieee80211_bssid *bssid; struct ieee80211chanreq *chanreq; struct ieee80211_channel *chan; struct ieee80211_txpower *txpower; static const u_int8_t empty_macaddr[IEEE80211_ADDR_LEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; struct ieee80211_nodereq *nr, nrbuf; struct ieee80211_nodereq_all *na; struct ieee80211_node *ni; u_int32_t flags; switch (cmd) { case SIOCSIFADDR: case SIOCGIFADDR: error = ether_ioctl(ifp, &ic->ic_ac, cmd, data); break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); break; case SIOCS80211NWID: if ((error = suser(curproc, 0)) != 0) break; if ((error = copyin(ifr->ifr_data, &nwid, sizeof(nwid))) != 0) break; if (nwid.i_len > IEEE80211_NWID_LEN) { error = EINVAL; break; } memset(ic->ic_des_essid, 0, IEEE80211_NWID_LEN); ic->ic_des_esslen = nwid.i_len; memcpy(ic->ic_des_essid, nwid.i_nwid, nwid.i_len); error = ENETRESET; break; case SIOCG80211NWID: memset(&nwid, 0, sizeof(nwid)); switch (ic->ic_state) { case IEEE80211_S_INIT: case IEEE80211_S_SCAN: nwid.i_len = ic->ic_des_esslen; memcpy(nwid.i_nwid, ic->ic_des_essid, nwid.i_len); break; default: nwid.i_len = ic->ic_bss->ni_esslen; memcpy(nwid.i_nwid, ic->ic_bss->ni_essid, nwid.i_len); break; } error = copyout(&nwid, ifr->ifr_data, sizeof(nwid)); break; case SIOCS80211NWKEY: if ((error = suser(curproc, 0)) != 0) break; error = ieee80211_ioctl_setnwkeys(ic, (void *)data); break; case SIOCG80211NWKEY: error = ieee80211_ioctl_getnwkeys(ic, (void *)data); break; case SIOCS80211WMMPARMS: if ((error = suser(curproc, 0)) != 0) break; if (!(ic->ic_flags & IEEE80211_C_QOS)) { error = ENODEV; break; } wmm = (struct ieee80211_wmmparams *)data; if (wmm->i_enabled) ic->ic_flags |= IEEE80211_F_QOS; else ic->ic_flags &= ~IEEE80211_F_QOS; error = ENETRESET; break; case SIOCG80211WMMPARMS: wmm = (struct ieee80211_wmmparams *)data; wmm->i_enabled = (ic->ic_flags & IEEE80211_F_QOS) ? 1 : 0; break; case SIOCS80211WPAPARMS: if ((error = suser(curproc, 0)) != 0) break; error = ieee80211_ioctl_setwpaparms(ic, (void *)data); break; case SIOCG80211WPAPARMS: error = ieee80211_ioctl_getwpaparms(ic, (void *)data); break; case SIOCS80211WPAPSK: if ((error = suser(curproc, 0)) != 0) break; psk = (struct ieee80211_wpapsk *)data; if (psk->i_enabled) { ic->ic_flags |= IEEE80211_F_PSK; memcpy(ic->ic_psk, psk->i_psk, sizeof(ic->ic_psk)); } else { ic->ic_flags &= ~IEEE80211_F_PSK; memset(ic->ic_psk, 0, sizeof(ic->ic_psk)); } error = ENETRESET; break; case SIOCG80211WPAPSK: psk = (struct ieee80211_wpapsk *)data; if (ic->ic_flags & IEEE80211_F_PSK) { psk->i_enabled = 1; /* do not show any keys to non-root user */ if (suser(curproc, 0) != 0) { psk->i_enabled = 2; memset(psk->i_psk, 0, sizeof(psk->i_psk)); break; /* return ok but w/o key */ } memcpy(psk->i_psk, ic->ic_psk, sizeof(psk->i_psk)); } else psk->i_enabled = 0; break; case SIOCS80211POWER: if ((error = suser(curproc, 0)) != 0) break; power = (struct ieee80211_power *)data; ic->ic_lintval = power->i_maxsleep; if (power->i_enabled != 0) { if ((ic->ic_caps & IEEE80211_C_PMGT) == 0) error = EINVAL; else if ((ic->ic_flags & IEEE80211_F_PMGTON) == 0) { ic->ic_flags |= IEEE80211_F_PMGTON; error = ENETRESET; } } else { if (ic->ic_flags & IEEE80211_F_PMGTON) { ic->ic_flags &= ~IEEE80211_F_PMGTON; error = ENETRESET; } } break; case SIOCG80211POWER: power = (struct ieee80211_power *)data; power->i_enabled = (ic->ic_flags & IEEE80211_F_PMGTON) ? 1 : 0; power->i_maxsleep = ic->ic_lintval; break; case SIOCS80211BSSID: if ((error = suser(curproc, 0)) != 0) break; bssid = (struct ieee80211_bssid *)data; if (IEEE80211_ADDR_EQ(bssid->i_bssid, empty_macaddr)) ic->ic_flags &= ~IEEE80211_F_DESBSSID; else { ic->ic_flags |= IEEE80211_F_DESBSSID; IEEE80211_ADDR_COPY(ic->ic_des_bssid, bssid->i_bssid); } if (ic->ic_opmode == IEEE80211_M_HOSTAP) break; switch (ic->ic_state) { case IEEE80211_S_INIT: case IEEE80211_S_SCAN: error = ENETRESET; break; default: if ((ic->ic_flags & IEEE80211_F_DESBSSID) && !IEEE80211_ADDR_EQ(ic->ic_des_bssid, ic->ic_bss->ni_bssid)) error = ENETRESET; break; } break; case SIOCG80211BSSID: bssid = (struct ieee80211_bssid *)data; switch (ic->ic_state) { case IEEE80211_S_INIT: case IEEE80211_S_SCAN: if (ic->ic_opmode == IEEE80211_M_HOSTAP) IEEE80211_ADDR_COPY(bssid->i_bssid, ic->ic_myaddr); else if (ic->ic_flags & IEEE80211_F_DESBSSID) IEEE80211_ADDR_COPY(bssid->i_bssid, ic->ic_des_bssid); else memset(bssid->i_bssid, 0, IEEE80211_ADDR_LEN); break; default: IEEE80211_ADDR_COPY(bssid->i_bssid, ic->ic_bss->ni_bssid); break; } break; case SIOCS80211CHANNEL: if ((error = suser(curproc, 0)) != 0) break; chanreq = (struct ieee80211chanreq *)data; if (chanreq->i_channel == IEEE80211_CHAN_ANY) ic->ic_des_chan = IEEE80211_CHAN_ANYC; else if (chanreq->i_channel > IEEE80211_CHAN_MAX || isclr(ic->ic_chan_active, chanreq->i_channel)) { error = EINVAL; break; } else ic->ic_ibss_chan = ic->ic_des_chan = &ic->ic_channels[chanreq->i_channel]; switch (ic->ic_state) { case IEEE80211_S_INIT: case IEEE80211_S_SCAN: error = ENETRESET; break; default: if (ic->ic_opmode == IEEE80211_M_STA) { if (ic->ic_des_chan != IEEE80211_CHAN_ANYC && ic->ic_bss->ni_chan != ic->ic_des_chan) error = ENETRESET; } else { if (ic->ic_bss->ni_chan != ic->ic_ibss_chan) error = ENETRESET; } break; } break; case SIOCG80211CHANNEL: chanreq = (struct ieee80211chanreq *)data; switch (ic->ic_state) { case IEEE80211_S_INIT: case IEEE80211_S_SCAN: if (ic->ic_opmode == IEEE80211_M_STA) chan = ic->ic_des_chan; else chan = ic->ic_ibss_chan; break; default: chan = ic->ic_bss->ni_chan; break; } chanreq->i_channel = ieee80211_chan2ieee(ic, chan); break; #if 0 case SIOCG80211ZSTATS: #endif case SIOCG80211STATS: ifr = (struct ifreq *)data; copyout(&ic->ic_stats, ifr->ifr_data, sizeof (ic->ic_stats)); #if 0 if (cmd == SIOCG80211ZSTATS) memset(&ic->ic_stats, 0, sizeof(ic->ic_stats)); #endif break; case SIOCS80211TXPOWER: if ((error = suser(curproc, 0)) != 0) break; txpower = (struct ieee80211_txpower *)data; if ((ic->ic_caps & IEEE80211_C_TXPMGT) == 0) { error = EINVAL; break; } if (IEEE80211_TXPOWER_MIN > txpower->i_val || txpower->i_val > IEEE80211_TXPOWER_MAX) { error = EINVAL; break; } ic->ic_txpower = txpower->i_val; error = ENETRESET; break; case SIOCG80211TXPOWER: txpower = (struct ieee80211_txpower *)data; if ((ic->ic_caps & IEEE80211_C_TXPMGT) == 0) error = EINVAL; else txpower->i_val = ic->ic_txpower; break; case SIOCSIFMTU: ifr = (struct ifreq *)data; if (!(IEEE80211_MTU_MIN <= ifr->ifr_mtu && ifr->ifr_mtu <= IEEE80211_MTU_MAX)) error = EINVAL; else ifp->if_mtu = ifr->ifr_mtu; break; case SIOCS80211SCAN: if ((error = suser(curproc, 0)) != 0) break; if (ic->ic_opmode == IEEE80211_M_HOSTAP) break; if ((ifp->if_flags & IFF_UP) == 0) { error = ENETDOWN; break; } if ((ic->ic_scan_lock & IEEE80211_SCAN_REQUEST) == 0) { if (ic->ic_scan_lock & IEEE80211_SCAN_LOCKED) ic->ic_scan_lock |= IEEE80211_SCAN_RESUME; ic->ic_scan_lock |= IEEE80211_SCAN_REQUEST; if (ic->ic_state != IEEE80211_S_SCAN) ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); } /* Let the userspace process wait for completion */ error = tsleep(&ic->ic_scan_lock, PCATCH, "80211scan", hz * IEEE80211_SCAN_TIMEOUT); break; case SIOCG80211NODE: nr = (struct ieee80211_nodereq *)data; ni = ieee80211_find_node(ic, nr->nr_macaddr); if (ni == NULL) { error = ENOENT; break; } ieee80211_node2req(ic, ni, nr); break; case SIOCS80211NODE: if ((error = suser(curproc, 0)) != 0) break; if (ic->ic_opmode == IEEE80211_M_HOSTAP) { error = EINVAL; break; } nr = (struct ieee80211_nodereq *)data; ni = ieee80211_find_node(ic, nr->nr_macaddr); if (ni == NULL) ni = ieee80211_alloc_node(ic, nr->nr_macaddr); if (ni == NULL) { error = ENOENT; break; } if (nr->nr_flags & IEEE80211_NODEREQ_COPY) ieee80211_req2node(ic, nr, ni); break; case SIOCS80211DELNODE: if ((error = suser(curproc, 0)) != 0) break; nr = (struct ieee80211_nodereq *)data; ni = ieee80211_find_node(ic, nr->nr_macaddr); if (ni == NULL) error = ENOENT; else if (ni == ic->ic_bss) error = EPERM; else { if (ni->ni_state == IEEE80211_STA_COLLECT) break; /* Disassociate station. */ if (ni->ni_state == IEEE80211_STA_ASSOC) IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DISASSOC, IEEE80211_REASON_ASSOC_LEAVE); /* Deauth station. */ if (ni->ni_state >= IEEE80211_STA_AUTH) IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DEAUTH, IEEE80211_REASON_AUTH_LEAVE); ieee80211_release_node(ic, ni); } break; case SIOCG80211ALLNODES: na = (struct ieee80211_nodereq_all *)data; na->na_nodes = i = 0; ni = RB_MIN(ieee80211_tree, &ic->ic_tree); while (ni && na->na_size >= i + sizeof(struct ieee80211_nodereq)) { ieee80211_node2req(ic, ni, &nrbuf); error = copyout(&nrbuf, (caddr_t)na->na_node + i, sizeof(struct ieee80211_nodereq)); if (error) break; i += sizeof(struct ieee80211_nodereq); na->na_nodes++; ni = RB_NEXT(ieee80211_tree, &ic->ic_tree, ni); } break; case SIOCG80211FLAGS: flags = ic->ic_flags; if (ic->ic_opmode != IEEE80211_M_HOSTAP) flags &= ~IEEE80211_F_HOSTAPMASK; ifr->ifr_flags = flags >> IEEE80211_F_USERSHIFT; break; case SIOCS80211FLAGS: if ((error = suser(curproc, 0)) != 0) break; flags = (u_int32_t)ifr->ifr_flags << IEEE80211_F_USERSHIFT; if (ic->ic_opmode != IEEE80211_M_HOSTAP && (flags & IEEE80211_F_HOSTAPMASK)) { error = EINVAL; break; } ic->ic_flags = (ic->ic_flags & ~IEEE80211_F_USERMASK) | flags; error = ENETRESET; break; default: error = ENOTTY; break; } return error; }
/* * Complete a scan of potential channels. */ void ieee80211_end_scan(struct ifnet *ifp) { struct ieee80211com *ic = (void *)ifp; struct ieee80211_node *ni, *nextbs, *selbs; if (ifp->if_flags & IFF_DEBUG) printf("%s: end %s scan\n", ifp->if_xname, (ic->ic_flags & IEEE80211_F_ASCAN) ? "active" : "passive"); if (ic->ic_scan_count) ic->ic_flags &= ~IEEE80211_F_ASCAN; ni = RB_MIN(ieee80211_tree, &ic->ic_tree); #ifndef IEEE80211_STA_ONLY if (ic->ic_opmode == IEEE80211_M_HOSTAP) { /* XXX off stack? */ u_char occupied[howmany(IEEE80211_CHAN_MAX, NBBY)]; int i, fail; /* * The passive scan to look for existing AP's completed, * select a channel to camp on. Identify the channels * that already have one or more AP's and try to locate * an unnoccupied one. If that fails, pick a random * channel from the active set. */ memset(occupied, 0, sizeof(occupied)); RB_FOREACH(ni, ieee80211_tree, &ic->ic_tree) setbit(occupied, ieee80211_chan2ieee(ic, ni->ni_chan)); for (i = 0; i < IEEE80211_CHAN_MAX; i++) if (isset(ic->ic_chan_active, i) && isclr(occupied, i)) break; if (i == IEEE80211_CHAN_MAX) { fail = arc4random() & 3; /* random 0-3 */ for (i = 0; i < IEEE80211_CHAN_MAX; i++) if (isset(ic->ic_chan_active, i) && fail-- == 0) break; } ieee80211_create_ibss(ic, &ic->ic_channels[i]); goto wakeup; } #endif if (ni == NULL) { DPRINTF(("no scan candidate\n")); notfound: #ifndef IEEE80211_STA_ONLY if (ic->ic_opmode == IEEE80211_M_IBSS && (ic->ic_flags & IEEE80211_F_IBSSON) && ic->ic_des_esslen != 0) { ieee80211_create_ibss(ic, ic->ic_ibss_chan); goto wakeup; } #endif /* * Scan the next mode if nothing has been found. This * is necessary if the device supports different * incompatible modes in the same channel range, like * like 11b and "pure" 11G mode. This will loop * forever except for user-initiated scans. */ if (ieee80211_next_mode(ifp) == IEEE80211_MODE_AUTO) { if (ic->ic_scan_lock & IEEE80211_SCAN_REQUEST && ic->ic_scan_lock & IEEE80211_SCAN_RESUME) { ic->ic_scan_lock = IEEE80211_SCAN_LOCKED; /* Return from an user-initiated scan */ wakeup(&ic->ic_scan_lock); } else if (ic->ic_scan_lock & IEEE80211_SCAN_REQUEST) goto wakeup; ic->ic_scan_count++; } /* * Reset the list of channels to scan and start again. */ ieee80211_next_scan(ifp); return; } selbs = NULL; for (; ni != NULL; ni = nextbs) { nextbs = RB_NEXT(ieee80211_tree, &ic->ic_tree, ni); if (ni->ni_fails) { /* * The configuration of the access points may change * during my scan. So delete the entry for the AP * and retry to associate if there is another beacon. */ if (ni->ni_fails++ > 2) ieee80211_free_node(ic, ni); continue; } if (ieee80211_match_bss(ic, ni) == 0) { if (selbs == NULL) selbs = ni; else if (ni->ni_rssi > selbs->ni_rssi) selbs = ni; } } if (selbs == NULL) goto notfound; (*ic->ic_node_copy)(ic, ic->ic_bss, selbs); ni = ic->ic_bss; /* * Set the erp state (mostly the slot time) to deal with * the auto-select case; this should be redundant if the * mode is locked. */ ic->ic_curmode = ieee80211_chan2mode(ic, ni->ni_chan); ieee80211_reset_erp(ic); if (ic->ic_flags & IEEE80211_F_RSNON) ieee80211_choose_rsnparams(ic); else if (ic->ic_flags & IEEE80211_F_WEPON) ni->ni_rsncipher = IEEE80211_CIPHER_USEGROUP; ieee80211_node_newstate(selbs, IEEE80211_STA_BSS); #ifndef IEEE80211_STA_ONLY if (ic->ic_opmode == IEEE80211_M_IBSS) { ieee80211_fix_rate(ic, ni, IEEE80211_F_DOFRATE | IEEE80211_F_DONEGO | IEEE80211_F_DODEL); if (ni->ni_rates.rs_nrates == 0) goto notfound; ieee80211_new_state(ic, IEEE80211_S_RUN, -1); } else #endif ieee80211_new_state(ic, IEEE80211_S_AUTH, -1); wakeup: if (ic->ic_scan_lock & IEEE80211_SCAN_REQUEST) { /* Return from an user-initiated scan */ wakeup(&ic->ic_scan_lock); } ic->ic_scan_lock = IEEE80211_SCAN_UNLOCKED; }
void ieee80211_create_ibss(struct ieee80211com* ic, struct ieee80211_channel *chan) { struct ieee80211_node *ni; struct ifnet *ifp = &ic->ic_if; ni = ic->ic_bss; if (ifp->if_flags & IFF_DEBUG) printf("%s: creating ibss\n", ifp->if_xname); ic->ic_flags |= IEEE80211_F_SIBSS; ni->ni_chan = chan; ni->ni_rates = ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; ni->ni_txrate = 0; IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); if (ic->ic_opmode == IEEE80211_M_IBSS) { if ((ic->ic_flags & IEEE80211_F_DESBSSID) != 0) IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_des_bssid); else ni->ni_bssid[0] |= 0x02; /* local bit for IBSS */ } ni->ni_esslen = ic->ic_des_esslen; memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); ni->ni_rssi = 0; ni->ni_rstamp = 0; memset(ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); ni->ni_intval = ic->ic_lintval; ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; if (ic->ic_flags & IEEE80211_F_WEPON) ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; if (ic->ic_flags & IEEE80211_F_RSNON) { struct ieee80211_key *k; /* initialize 256-bit global key counter to a random value */ arc4random_buf(ic->ic_globalcnt, EAPOL_KEY_NONCE_LEN); ni->ni_rsnprotos = ic->ic_rsnprotos; ni->ni_rsnakms = ic->ic_rsnakms; ni->ni_rsnciphers = ic->ic_rsnciphers; ni->ni_rsngroupcipher = ic->ic_rsngroupcipher; ni->ni_rsngroupmgmtcipher = ic->ic_rsngroupmgmtcipher; ni->ni_rsncaps = 0; if (ic->ic_caps & IEEE80211_C_MFP) { ni->ni_rsncaps |= IEEE80211_RSNCAP_MFPC; if (ic->ic_flags & IEEE80211_F_MFPR) ni->ni_rsncaps |= IEEE80211_RSNCAP_MFPR; } ic->ic_def_txkey = 1; k = &ic->ic_nw_keys[ic->ic_def_txkey]; memset(k, 0, sizeof(*k)); k->k_id = ic->ic_def_txkey; k->k_cipher = ni->ni_rsngroupcipher; k->k_flags = IEEE80211_KEY_GROUP | IEEE80211_KEY_TX; k->k_len = ieee80211_cipher_keylen(k->k_cipher); arc4random_buf(k->k_key, k->k_len); (*ic->ic_set_key)(ic, ni, k); /* XXX */ if (ic->ic_caps & IEEE80211_C_MFP) { ic->ic_igtk_kid = 4; k = &ic->ic_nw_keys[ic->ic_igtk_kid]; memset(k, 0, sizeof(*k)); k->k_id = ic->ic_igtk_kid; k->k_cipher = ni->ni_rsngroupmgmtcipher; k->k_flags = IEEE80211_KEY_IGTK | IEEE80211_KEY_TX; k->k_len = 16; arc4random_buf(k->k_key, k->k_len); (*ic->ic_set_key)(ic, ni, k); /* XXX */ } /* * In HostAP mode, multicast traffic is sent using ic_bss * as the Tx node, so mark our node as valid so we can send * multicast frames using the group key we've just configured. */ ni->ni_port_valid = 1; ni->ni_flags |= IEEE80211_NODE_TXPROT; /* schedule a GTK/IGTK rekeying after 3600s */ timeout_add_sec(&ic->ic_rsn_timeout, 3600); } timeout_add_sec(&ic->ic_inact_timeout, IEEE80211_INACT_WAIT); timeout_add_sec(&ic->ic_node_cache_timeout, IEEE80211_CACHE_WAIT); ieee80211_new_state(ic, IEEE80211_S_RUN, -1); }
int an_init(struct ifnet *ifp) { struct an_softc *sc = ifp->if_softc; struct ieee80211com *ic = &sc->sc_ic; int i, error, fid; DPRINTF(("an_init: enabled %d\n", sc->sc_enabled)); if (!sc->sc_enabled) { if (sc->sc_enable) (*sc->sc_enable)(sc); an_wait(sc); sc->sc_enabled = 1; } else { an_stop(ifp, 0); if ((error = an_reset(sc)) != 0) { printf("%s: failed to reset\n", ifp->if_xname); an_stop(ifp, 1); return error; } } CSR_WRITE_2(sc, AN_SW0, AN_MAGIC); /* Allocate the TX buffers */ for (i = 0; i < AN_TX_RING_CNT; i++) { if ((error = an_alloc_nicmem(sc, AN_TX_MAX_LEN, &fid)) != 0) { printf("%s: failed to allocate nic memory\n", ifp->if_xname); an_stop(ifp, 1); return error; } DPRINTF2(("an_init: txbuf %d allocated %x\n", i, fid)); sc->sc_txd[i].d_fid = fid; sc->sc_txd[i].d_inuse = 0; } sc->sc_txcur = sc->sc_txnext = 0; IEEE80211_ADDR_COPY(sc->sc_config.an_macaddr, ic->ic_myaddr); an_swap16((u_int16_t *)&sc->sc_config.an_macaddr, 3); sc->sc_config.an_scanmode = AN_SCANMODE_ACTIVE; sc->sc_config.an_authtype = AN_AUTHTYPE_OPEN; /*XXX*/ if (ic->ic_flags & IEEE80211_F_WEPON) { sc->sc_config.an_authtype |= AN_AUTHTYPE_PRIVACY_IN_USE; } sc->sc_config.an_listen_interval = ic->ic_lintval; sc->sc_config.an_beacon_period = ic->ic_lintval; if (ic->ic_flags & IEEE80211_F_PMGTON) sc->sc_config.an_psave_mode = AN_PSAVE_PSP; else sc->sc_config.an_psave_mode = AN_PSAVE_CAM; sc->sc_config.an_ds_channel = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); switch (ic->ic_opmode) { case IEEE80211_M_STA: sc->sc_config.an_opmode = AN_OPMODE_INFRASTRUCTURE_STATION; sc->sc_config.an_rxmode = AN_RXMODE_BC_MC_ADDR; break; #ifndef IEEE80211_STA_ONLY case IEEE80211_M_IBSS: sc->sc_config.an_opmode = AN_OPMODE_IBSS_ADHOC; sc->sc_config.an_rxmode = AN_RXMODE_BC_MC_ADDR; break; #endif case IEEE80211_M_MONITOR: sc->sc_config.an_opmode = AN_OPMODE_INFRASTRUCTURE_STATION; sc->sc_config.an_rxmode = AN_RXMODE_80211_MONITOR_ANYBSS; sc->sc_config.an_authtype = AN_AUTHTYPE_NONE; if (ic->ic_flags & IEEE80211_F_WEPON) sc->sc_config.an_authtype |= AN_AUTHTYPE_PRIVACY_IN_USE | AN_AUTHTYPE_ALLOW_UNENCRYPTED; break; default: printf("%s: bad opmode %d\n", ifp->if_xname, ic->ic_opmode); an_stop(ifp, 1); return EIO; } sc->sc_config.an_rxmode |= AN_RXMODE_NO_8023_HEADER; /* Set the ssid list */ memset(&sc->sc_buf, 0, sizeof(sc->sc_buf.sc_ssidlist)); sc->sc_buf.sc_ssidlist.an_entry[0].an_ssid_len = ic->ic_des_esslen; if (ic->ic_des_esslen) memcpy(sc->sc_buf.sc_ssidlist.an_entry[0].an_ssid, ic->ic_des_essid, ic->ic_des_esslen); an_swap16((u_int16_t *)&sc->sc_buf.sc_ssidlist.an_entry[0].an_ssid, 16); if ((error = an_write_rid(sc, AN_RID_SSIDLIST, &sc->sc_buf, sizeof(sc->sc_buf.sc_ssidlist)))) { printf("%s: failed to write ssid list\n", ifp->if_xname); an_stop(ifp, 1); return error; } /* Set the AP list */ memset(&sc->sc_buf, 0, sizeof(sc->sc_buf.sc_aplist)); (void)an_write_rid(sc, AN_RID_APLIST, &sc->sc_buf, sizeof(sc->sc_buf.sc_aplist)); /* Set the encapsulation */ for (i = 0; i < AN_ENCAP_NENTS; i++) { sc->sc_buf.sc_encap.an_entry[i].an_ethertype = 0; sc->sc_buf.sc_encap.an_entry[i].an_action = AN_RXENCAP_RFC1024 | AN_TXENCAP_RFC1024; } (void)an_write_rid(sc, AN_RID_ENCAP, &sc->sc_buf, sizeof(sc->sc_buf.sc_encap)); /* Set the WEP Keys */ if (ic->ic_flags & IEEE80211_F_WEPON) an_write_wepkey(sc, AN_RID_WEP_VOLATILE, sc->sc_wepkeys, sc->sc_tx_key); /* Set the configuration */ if ((error = an_write_rid(sc, AN_RID_GENCONFIG, &sc->sc_config, sizeof(sc->sc_config)))) { printf("%s: failed to write config\n", ifp->if_xname); an_stop(ifp, 1); return error; } /* Enable the MAC */ if (an_cmd(sc, AN_CMD_ENABLE, 0)) { printf("%s: failed to enable MAC\n", sc->sc_dev.dv_xname); an_stop(ifp, 1); return ENXIO; } if (ifp->if_flags & IFF_PROMISC) an_cmd(sc, AN_CMD_SET_MODE, 0xffff); ifp->if_flags |= IFF_RUNNING; ifq_clr_oactive(&ifp->if_snd); ic->ic_state = IEEE80211_S_INIT; if (ic->ic_opmode == IEEE80211_M_MONITOR) ieee80211_new_state(ic, IEEE80211_S_RUN, -1); /* enable interrupts */ CSR_WRITE_2(sc, AN_INT_EN, AN_INTRS); return 0; }