int wlan_mlme_deauth_request(wlan_if_t vaphandle, u_int8_t *macaddr, IEEE80211_REASON_CODE reason) { struct ieee80211vap *vap = vaphandle; struct ieee80211_node *ni; int error = 0; IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s\n", __func__); /* * if a node exist with the given address already , use it. * if not use bss node. */ ni = ieee80211_vap_find_node(vap, macaddr); if (ni == NULL) { if (IEEE80211_ADDR_EQ(macaddr, IEEE80211_GET_BCAST_ADDR(vap->iv_ic))) ni = ieee80211_ref_node(vap->iv_bss); else{ error = -EIO; goto exit; } } /* Send deauth frame */ error = ieee80211_send_deauth(ni, reason); /* Node needs to be removed from table as well, do it only for AP/IBSS now */ #if ATH_SUPPORT_IBSS if ((vap->iv_opmode == IEEE80211_M_HOSTAP || vap->iv_opmode == IEEE80211_M_IBSS) && ni != vap->iv_bss) { #else if (vap->iv_opmode == IEEE80211_M_HOSTAP && ni != vap->iv_bss) { #if ATH_SUPPORT_AOW ieee80211_aow_join_indicate(ni->ni_ic, AOW_STA_DISCONNECTED, ni); #endif /* ATH_SUPPORT_AOW */ #endif /* ATH_SUPPORT_IBSS */ IEEE80211_NODE_LEAVE(ni); } /* claim node immediately */ ieee80211_free_node(ni); if (error) { goto exit; } /* * Call MLME confirmation handler => mlme_deauth_complete * This should reflect the tx completion status of the deauth frame, * but since we don't have per frame completion, we'll always indicate success here. */ IEEE80211_DELIVER_EVENT_MLME_DEAUTH_COMPLETE(vap,macaddr, IEEE80211_STATUS_SUCCESS); exit: return error; } int wlan_mlme_disassoc_request(wlan_if_t vaphandle, u_int8_t *macaddr, IEEE80211_REASON_CODE reason) { struct ieee80211vap *vap = vaphandle; struct ieee80211_node *ni; int error = 0; IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s\n", __func__); /* Broadcast Addr - disassociate all stations */ if (IEEE80211_ADDR_EQ(macaddr, IEEE80211_GET_BCAST_ADDR(vap->iv_ic))) { if (vap->iv_opmode == IEEE80211_M_STA) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s: unexpected station vap with all 0xff mac address", __func__); ASSERT(0); goto exit; } else { /* Iterate station list only when PMF is not enabled */ if (!wlan_vap_is_pmf_enabled(vap)) { wlan_iterate_station_list(vap, sta_disassoc, NULL); goto exit; } } } /* * if a node exist with the given address already , use it. * if not use bss node. */ ni = ieee80211_vap_find_node(vap, macaddr); if (ni == NULL) { if (IEEE80211_ADDR_EQ(macaddr, IEEE80211_GET_BCAST_ADDR(vap->iv_ic))) ni = ieee80211_ref_node(vap->iv_bss); else{ error = -EIO; goto exit; } } /* Send disassoc frame */ error = ieee80211_send_disassoc(ni, reason); /* Node needs to be removed from table as well, do it only for AP now */ if (vap->iv_opmode == IEEE80211_M_HOSTAP && ni != vap->iv_bss) { #if ATH_SUPPORT_AOW ieee80211_aow_join_indicate(ni->ni_ic, AOW_STA_DISCONNECTED, ni); #endif /* ATH_SUPPORT_AOW */ IEEE80211_NODE_LEAVE(ni); } /* claim node immediately */ ieee80211_free_node(ni); if (error) { goto exit; } /* * Call MLME confirmation handler => mlme_disassoc_complete * This should reflect the tx completion status of the disassoc frame, * but since we don't have per frame completion, we'll always indicate success here. */ IEEE80211_DELIVER_EVENT_MLME_DISASSOC_COMPLETE(vap, macaddr, reason, IEEE80211_STATUS_SUCCESS); exit: return error; } int wlan_mlme_start_bss(wlan_if_t vaphandle) { struct ieee80211vap *vap = vaphandle; struct ieee80211_mlme_priv *mlme_priv = vap->iv_mlme_priv; int error = 0; IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s\n", __func__); switch(vap->iv_opmode) { case IEEE80211_M_IBSS: IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s: Create adhoc bss\n", __func__); /* Reset state */ mlme_priv->im_connection_up = 0; error = mlme_create_adhoc_bss(vap); break; case IEEE80211_M_MONITOR: case IEEE80211_M_HOSTAP: case IEEE80211_M_BTAMP: /* * start the AP . the channel/ssid should have been setup already. */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s: Create infrastructure(AP) bss\n", __func__); error = mlme_create_infra_bss(vap); break; default: ASSERT(0); } return error; } bool wlan_coext_enabled(wlan_if_t vaphandle) { struct ieee80211com *ic = vaphandle->iv_ic; return (ic->ic_flags & IEEE80211_F_COEXT_DISABLE) ? FALSE : TRUE; } void wlan_determine_cw(wlan_if_t vaphandle, wlan_chan_t channel) { struct ieee80211com *ic = vaphandle->iv_ic; int is_chan_ht40 = channel->ic_flags & (IEEE80211_CHAN_11NG_HT40PLUS | IEEE80211_CHAN_11NG_HT40MINUS); if (is_chan_ht40 && (channel->ic_flags & IEEE80211_CHAN_HT40INTOL)) { ic->ic_bss_to20(ic); } } static void sta_deauth(void *arg, struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; u_int8_t macaddr[6]; IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s: deauth station %s \n", __func__,ether_sprintf(ni->ni_macaddr)); IEEE80211_ADDR_COPY(macaddr, ni->ni_macaddr); if (ni->ni_associd) { /* * if it is associated, then send disassoc. */ ieee80211_send_deauth(ni, IEEE80211_REASON_AUTH_LEAVE); } IEEE80211_NODE_LEAVE(ni); IEEE80211_DELIVER_EVENT_MLME_DEAUTH_INDICATION(vap, macaddr, IEEE80211_REASON_AUTH_LEAVE); } static void sta_disassoc(void *arg, struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; u_int8_t macaddr[6]; IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s: disassoc station %s \n", __func__,ether_sprintf(ni->ni_macaddr)); IEEE80211_ADDR_COPY(macaddr, ni->ni_macaddr); if (ni->ni_associd) { /* * if it is associated, then send disassoc. */ ieee80211_send_disassoc(ni, IEEE80211_REASON_ASSOC_LEAVE); #if ATH_SUPPORT_AOW ieee80211_aow_join_indicate(ni->ni_ic, AOW_STA_DISCONNECTED, ni); #endif /* ATH_SUPPORT_AOW */ } IEEE80211_NODE_LEAVE(ni); IEEE80211_DELIVER_EVENT_MLME_DISASSOC_COMPLETE(vap, macaddr, IEEE80211_REASON_ASSOC_LEAVE, IEEE80211_STATUS_SUCCESS); } int wlan_mlme_stop_bss(wlan_if_t vaphandle, int flags) { #define WAIT_RX_INTERVAL 10000 u_int32_t elapsed_time = 0; struct ieee80211vap *vap = vaphandle; struct ieee80211_mlme_priv *mlme_priv = vap->iv_mlme_priv; int error = 0; IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s flags = 0x%x\n", __func__, flags); /* * Wait for current rx path to finish. Assume only one rx thread. */ if (flags & WLAN_MLME_STOP_BSS_F_WAIT_RX_DONE) { do { if (OS_ATOMIC_CMPXCHG(&vap->iv_rx_gate, 0, 1) == 0) { break; } OS_SLEEP(WAIT_RX_INTERVAL); elapsed_time += WAIT_RX_INTERVAL; if (elapsed_time > (100 * WAIT_RX_INTERVAL)) ieee80211_note (vap,"%s: Rx pending count stuck. Investigate!!!\n", __func__); } while (1); } switch(vap->iv_opmode) { #if UMAC_SUPPORT_IBSS case IEEE80211_M_IBSS: mlme_stop_adhoc_bss(vap, flags); break; #endif case IEEE80211_M_HOSTAP: case IEEE80211_M_BTAMP: /* disassoc/deauth all stations */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_MLME, "%s: dsassocing/deauth all stations \n", __func__); if(vap->iv_send_deauth) wlan_iterate_station_list(vap, sta_deauth, NULL); else wlan_iterate_station_list(vap, sta_disassoc, NULL); break; case IEEE80211_M_STA: /* There should be no mlme requests pending */ ASSERT(vap->iv_mlme_priv->im_request_type == MLME_REQ_NONE); /* Reset state variables */ mlme_priv->im_connection_up = 0; mlme_sta_swbmiss_timer_stop(vap); ieee80211_sta_leave(vap->iv_bss); break; default: break; } if (flags & WLAN_MLME_STOP_BSS_F_FORCE_STOP_RESET) { /* put vap in init state */ ieee80211_vap_stop(vap, TRUE); } else { /* put vap in stopping state */ if (flags & WLAN_MLME_STOP_BSS_F_STANDBY) ieee80211_vap_standby(vap); else ieee80211_vap_stop(vap, FALSE); } if (!(flags & WLAN_MLME_STOP_BSS_F_NO_RESET)) error = ieee80211_reset_bss(vap); /* * Release the rx mutex. */ if (flags & WLAN_MLME_STOP_BSS_F_WAIT_RX_DONE) { (void) OS_ATOMIC_CMPXCHG(&vap->iv_rx_gate, 1, 0); } return error; #undef WAIT_RX_INTERVAL }
/* * IEEE80211_M_IBSS+IEEE80211_M_AHDEMO vap state machine handler. */ static int adhoc_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; enum ieee80211_state ostate; IEEE80211_LOCK_ASSERT(vap->iv_ic); ostate = vap->iv_state; IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); vap->iv_state = nstate; /* state transition */ if (ostate != IEEE80211_S_SCAN) ieee80211_cancel_scan(vap); /* background scan */ ni = vap->iv_bss; /* NB: no reference held */ switch (nstate) { case IEEE80211_S_INIT: switch (ostate) { case IEEE80211_S_SCAN: ieee80211_cancel_scan(vap); break; default: break; } if (ostate != IEEE80211_S_INIT) { /* NB: optimize INIT -> INIT case */ ieee80211_reset_bss(vap); } break; case IEEE80211_S_SCAN: switch (ostate) { case IEEE80211_S_RUN: /* beacon miss */ /* purge station table; entries are stale */ ieee80211_iterate_nodes(&ic->ic_sta, sta_leave, vap); /* fall thru... */ case IEEE80211_S_INIT: if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) { /* * Already have a channel; bypass the * scan and startup immediately. */ ieee80211_create_ibss(vap, ieee80211_ht_adjust_channel(ic, vap->iv_des_chan, vap->iv_flags_ht)); break; } /* * Initiate a scan. We can come here as a result * of an IEEE80211_IOC_SCAN_REQ too in which case * the vap will be marked with IEEE80211_FEXT_SCANREQ * and the scan request parameters will be present * in iv_scanreq. Otherwise we do the default. */ if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { ieee80211_check_scan(vap, vap->iv_scanreq_flags, vap->iv_scanreq_duration, vap->iv_scanreq_mindwell, vap->iv_scanreq_maxdwell, vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; } else ieee80211_check_scan_current(vap); break; case IEEE80211_S_SCAN: /* * This can happen because of a change in state * that requires a reset. Trigger a new scan * unless we're in manual roaming mode in which * case an application must issue an explicit request. */ if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) ieee80211_check_scan_current(vap); break; default: goto invalid; } break; case IEEE80211_S_RUN: if (vap->iv_flags & IEEE80211_F_WPA) { /* XXX validate prerequisites */ } switch (ostate) { case IEEE80211_S_SCAN: #ifdef IEEE80211_DEBUG if (ieee80211_msg_debug(vap)) { ieee80211_note(vap, "synchronized with %s ssid ", ether_sprintf(ni->ni_bssid)); ieee80211_print_essid(vap->iv_bss->ni_essid, ni->ni_esslen); /* XXX MCS/HT */ printf(" channel %d start %uMb\n", ieee80211_chan2ieee(ic, ic->ic_curchan), IEEE80211_RATE2MBS(ni->ni_txrate)); } #endif break; case IEEE80211_S_RUN: /* IBSS merge */ break; default: goto invalid; } /* * When 802.1x is not in use mark the port authorized * at this point so traffic can flow. */ if (ni->ni_authmode != IEEE80211_AUTH_8021X) ieee80211_node_authorize(ni); /* * Fake association when joining an existing bss. */ if (!IEEE80211_ADDR_EQ(ni->ni_macaddr, vap->iv_myaddr) && ic->ic_newassoc != NULL) ic->ic_newassoc(ni, ostate != IEEE80211_S_RUN); break; case IEEE80211_S_SLEEP: vap->iv_sta_ps(vap, 0); break; default: invalid: IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: unexpected state transition %s -> %s\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate]); break; } return 0; }
static int ieee80211_vap_reset(struct ieee80211vap *vap, ieee80211_reset_request *reset_req) { struct ieee80211com *ic = vap->iv_ic; /* Cancel pending MLME requests */ wlan_mlme_cancel(vap); /* * Reset node table include all nodes. * NB: pairwise keys will be deleted during node cleanup. */ ieee80211_reset_bss(vap); /* Reset aplist configuration parameters */ ieee80211_aplist_config_init(ieee80211_vap_get_aplist_config(vap)); /* Reset RSN settings */ ieee80211_rsn_reset(vap); /* Reset statistics */ ieee80211_reset_stats(vap, reset_req->reset_hw); /* Reset some of the misc. vap settings */ vap->iv_des_modecaps = (1 << IEEE80211_MODE_AUTO); vap->iv_des_nssid = 0; OS_MEMZERO(&vap->iv_des_ssid[0], (sizeof(ieee80211_ssid) * IEEE80211_SCAN_MAX_SSID)); /* Because reset_start has graspped a mutex which chan_set *will also try to grasp, so don't call ieee80211_set_channel here. */ #if !ATH_RESET_SERIAL /* Reset some MIB variables if required */ if (reset_req->set_default_mib) { /* * NB: Only IEEE80211_RESET_TYPE_DOT11_INTF can reset MIB variables */ KASSERT(reset_req->type == IEEE80211_RESET_TYPE_DOT11_INTF, ("invalid reset request\n")); if (reset_req->reset_mac) { /* reset regdmn module */ ieee80211_regdmn_reset(ic); } if (reset_req->reset_phy) { /* set the desired PHY mode to 11b */ vap->iv_des_mode = reset_req->phy_mode; /* change to the default PHY mode if required */ /* set wireless mode */ ieee80211_setmode(ic, vap->iv_des_mode, vap->iv_opmode); /* set default channel */ ASSERT(vap->iv_des_chan[vap->iv_des_mode] != IEEE80211_CHAN_ANYC); ieee80211_set_channel(ic, vap->iv_des_chan[vap->iv_des_mode]); vap->iv_bsschan = ic->ic_curchan; } } #endif return 0; }