/* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */ /* * Copyright (c) 2014 genua mbh * Copyright (c) 2014 Fixup Software Ltd. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /*- * Based on BSD-licensed source modules in the Linux iwlwifi driver, * which were used as the reference documentation for this implementation. * * Driver version we are currently based off of is * Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd) * *********************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, * USA * * The full GNU General Public License is included in this distribution * in the file called COPYING. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * * BSD LICENSE * * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (c) 2007-2010 Damien Bergamini * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "if_iwmreg.h" #include "if_iwmvar.h" #include "if_iwm_debug.h" #include "if_iwm_util.h" #include "if_iwm_scan.h" #define IWM_PLCP_QUIET_THRESH 1 #define IWM_ACTIVE_QUIET_TIME 10 #define LONG_OUT_TIME_PERIOD (600 * IEEE80211_DUR_TU) #define SHORT_OUT_TIME_PERIOD (200 * IEEE80211_DUR_TU) #define SUSPEND_TIME_PERIOD (100 * IEEE80211_DUR_TU) static uint16_t iwm_mvm_scan_rx_chain(struct iwm_softc *sc) { uint16_t rx_chain; uint8_t rx_ant; rx_ant = iwm_fw_valid_rx_ant(sc); rx_chain = rx_ant << IWM_PHY_RX_CHAIN_VALID_POS; rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_SEL_POS; rx_chain |= 0x1 << IWM_PHY_RX_CHAIN_DRIVER_FORCE_POS; return htole16(rx_chain); } #if 0 static uint32_t iwm_mvm_scan_max_out_time(struct iwm_softc *sc, uint32_t flags, int is_assoc) { if (!is_assoc) return 0; if (flags & 0x1) return htole32(SHORT_OUT_TIME_PERIOD); return htole32(LONG_OUT_TIME_PERIOD); } static uint32_t iwm_mvm_scan_suspend_time(struct iwm_softc *sc, int is_assoc) { if (!is_assoc) return 0; return htole32(SUSPEND_TIME_PERIOD); } #endif static uint32_t iwm_mvm_scan_rate_n_flags(struct iwm_softc *sc, int flags, int no_cck) { uint32_t tx_ant; int i, ind; for (i = 0, ind = sc->sc_scan_last_antenna; i < IWM_RATE_MCS_ANT_NUM; i++) { ind = (ind + 1) % IWM_RATE_MCS_ANT_NUM; if (iwm_fw_valid_tx_ant(sc) & (1 << ind)) { sc->sc_scan_last_antenna = ind; break; } } tx_ant = (1 << sc->sc_scan_last_antenna) << IWM_RATE_MCS_ANT_POS; if ((flags & IEEE80211_CHAN_2GHZ) && !no_cck) return htole32(IWM_RATE_1M_PLCP | IWM_RATE_MCS_CCK_MSK | tx_ant); else return htole32(IWM_RATE_6M_PLCP | tx_ant); } #if 0 /* * If req->n_ssids > 0, it means we should do an active scan. * In case of active scan w/o directed scan, we receive a zero-length SSID * just to notify that this scan is active and not passive. * In order to notify the FW of the number of SSIDs we wish to scan (including * the zero-length one), we need to set the corresponding bits in chan->type, * one for each SSID, and set the active bit (first). If the first SSID is * already included in the probe template, so we need to set only * req->n_ssids - 1 bits in addition to the first bit. */ static uint16_t iwm_mvm_get_active_dwell(struct iwm_softc *sc, int flags, int n_ssids) { if (flags & IEEE80211_CHAN_2GHZ) return 30 + 3 * (n_ssids + 1); return 20 + 2 * (n_ssids + 1); } static uint16_t iwm_mvm_get_passive_dwell(struct iwm_softc *sc, int flags) { return (flags & IEEE80211_CHAN_2GHZ) ? 100 + 20 : 100 + 10; } #endif static int iwm_mvm_scan_skip_channel(struct ieee80211_channel *c) { if (IEEE80211_IS_CHAN_2GHZ(c) && IEEE80211_IS_CHAN_B(c)) return 0; else if (IEEE80211_IS_CHAN_5GHZ(c) && IEEE80211_IS_CHAN_A(c)) return 0; else return 1; } static uint8_t iwm_mvm_lmac_scan_fill_channels(struct iwm_softc *sc, struct iwm_scan_channel_cfg_lmac *chan, int n_ssids) { struct ieee80211com *ic = &sc->sc_ic; struct ieee80211_channel *c; uint8_t nchan; int j; for (nchan = j = 0; j < ic->ic_nchans && nchan < sc->sc_capa_n_scan_channels; j++) { c = &ic->ic_channels[j]; /* For 2GHz, only populate 11b channels */ /* For 5GHz, only populate 11a channels */ /* * Catch other channels, in case we have 900MHz channels or * something in the chanlist. */ if (iwm_mvm_scan_skip_channel(c)) { IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n", __func__, c->ic_freq, c->ic_ieee, c->ic_flags); continue; } IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, "Adding channel %d (%d Mhz) to the list\n", nchan, c->ic_freq); chan->channel_num = htole16(ieee80211_mhz2ieee(c->ic_freq, 0)); chan->iter_count = htole16(1); chan->iter_interval = htole32(0); chan->flags = htole32(IWM_UNIFIED_SCAN_CHANNEL_PARTIAL); #if 0 /* makes scanning while associated less useful */ if (n_ssids != 0) chan->flags |= htole32(1 << 1); /* select SSID 0 */ #endif chan++; nchan++; } return nchan; } static uint8_t iwm_mvm_umac_scan_fill_channels(struct iwm_softc *sc, struct iwm_scan_channel_cfg_umac *chan, int n_ssids) { struct ieee80211com *ic = &sc->sc_ic; struct ieee80211_channel *c; uint8_t nchan; int j; for (nchan = j = 0; j < ic->ic_nchans && nchan < sc->sc_capa_n_scan_channels; j++) { c = &ic->ic_channels[j]; /* For 2GHz, only populate 11b channels */ /* For 5GHz, only populate 11a channels */ /* * Catch other channels, in case we have 900MHz channels or * something in the chanlist. */ if (iwm_mvm_scan_skip_channel(c)) { IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n", __func__, c->ic_freq, c->ic_ieee, c->ic_flags); continue; } IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, "Adding channel %d (%d Mhz) to the list\n", nchan, c->ic_freq); chan->channel_num = ieee80211_mhz2ieee(c->ic_freq, 0); chan->iter_count = 1; chan->iter_interval = htole16(0); chan->flags = htole32(0); #if 0 /* makes scanning while associated less useful */ if (n_ssids != 0) chan->flags = htole32(1 << 0); /* select SSID 0 */ #endif chan++; nchan++; } return nchan; } static int iwm_mvm_fill_probe_req(struct iwm_softc *sc, struct iwm_scan_probe_req *preq) { struct ieee80211com *ic = &sc->sc_ic; struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); struct ieee80211_frame *wh = (struct ieee80211_frame *)preq->buf; struct ieee80211_rateset *rs; size_t remain = sizeof(preq->buf); uint8_t *frm, *pos; int ssid_len = 0; const uint8_t *ssid = NULL; memset(preq, 0, sizeof(*preq)); /* Ensure enough space for header and SSID IE. */ if (remain < sizeof(*wh) + 2 + ssid_len) return ENOBUFS; /* * Build a probe request frame. Most of the following code is a * copy & paste of what is done in net80211. */ wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ; wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr); IEEE80211_ADDR_COPY(wh->i_addr2, vap ? vap->iv_myaddr : ic->ic_macaddr); IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr); *(uint16_t *)&wh->i_dur[0] = 0; /* filled by HW */ *(uint16_t *)&wh->i_seq[0] = 0; /* filled by HW */ frm = (uint8_t *)(wh + 1); frm = ieee80211_add_ssid(frm, ssid, ssid_len); /* Tell the firmware where the MAC header is. */ preq->mac_header.offset = 0; preq->mac_header.len = htole16(frm - (uint8_t *)wh); remain -= frm - (uint8_t *)wh; /* Fill in 2GHz IEs and tell firmware where they are. */ rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; if (rs->rs_nrates > IEEE80211_RATE_SIZE) { if (remain < 4 + rs->rs_nrates) return ENOBUFS; } else if (remain < 2 + rs->rs_nrates) { return ENOBUFS; } preq->band_data[0].offset = htole16(frm - (uint8_t *)wh); pos = frm; frm = ieee80211_add_rates(frm, rs); if (rs->rs_nrates > IEEE80211_RATE_SIZE) frm = ieee80211_add_xrates(frm, rs); preq->band_data[0].len = htole16(frm - pos); remain -= frm - pos; if (isset(sc->sc_enabled_capa, IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) { if (remain < 3) return ENOBUFS; *frm++ = IEEE80211_ELEMID_DSPARMS; *frm++ = 1; *frm++ = 0; remain -= 3; } if (sc->nvm_data->sku_cap_band_52GHz_enable) { /* Fill in 5GHz IEs. */ rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; if (rs->rs_nrates > IEEE80211_RATE_SIZE) { if (remain < 4 + rs->rs_nrates) return ENOBUFS; } else if (remain < 2 + rs->rs_nrates) { return ENOBUFS; } preq->band_data[1].offset = htole16(frm - (uint8_t *)wh); pos = frm; frm = ieee80211_add_rates(frm, rs); if (rs->rs_nrates > IEEE80211_RATE_SIZE) frm = ieee80211_add_xrates(frm, rs); preq->band_data[1].len = htole16(frm - pos); remain -= frm - pos; } /* Send 11n IEs on both 2GHz and 5GHz bands. */ preq->common_data.offset = htole16(frm - (uint8_t *)wh); pos = frm; #if 0 if (ic->ic_flags & IEEE80211_F_HTON) { if (remain < 28) return ENOBUFS; frm = ieee80211_add_htcaps(frm, ic); /* XXX add WME info? */ } #endif preq->common_data.len = htole16(frm - pos); return 0; } int iwm_mvm_config_umac_scan(struct iwm_softc *sc) { struct ieee80211com *ic = &sc->sc_ic; struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); struct iwm_scan_config *scan_config; int ret, j, nchan; size_t cmd_size; struct ieee80211_channel *c; struct iwm_host_cmd hcmd = { .id = iwm_cmd_id(IWM_SCAN_CFG_CMD, IWM_ALWAYS_LONG_GROUP, 0), .flags = IWM_CMD_SYNC, }; static const uint32_t rates = (IWM_SCAN_CONFIG_RATE_1M | IWM_SCAN_CONFIG_RATE_2M | IWM_SCAN_CONFIG_RATE_5M | IWM_SCAN_CONFIG_RATE_11M | IWM_SCAN_CONFIG_RATE_6M | IWM_SCAN_CONFIG_RATE_9M | IWM_SCAN_CONFIG_RATE_12M | IWM_SCAN_CONFIG_RATE_18M | IWM_SCAN_CONFIG_RATE_24M | IWM_SCAN_CONFIG_RATE_36M | IWM_SCAN_CONFIG_RATE_48M | IWM_SCAN_CONFIG_RATE_54M); cmd_size = sizeof(*scan_config) + sc->sc_capa_n_scan_channels; scan_config = kmalloc(cmd_size, M_DEVBUF, M_INTWAIT | M_ZERO); if (scan_config == NULL) return ENOMEM; scan_config->tx_chains = htole32(iwm_fw_valid_tx_ant(sc)); scan_config->rx_chains = htole32(iwm_fw_valid_rx_ant(sc)); scan_config->legacy_rates = htole32(rates | IWM_SCAN_CONFIG_SUPPORTED_RATE(rates)); /* These timings correspond to iwlwifi's UNASSOC scan. */ scan_config->dwell_active = 10; scan_config->dwell_passive = 110; scan_config->dwell_fragmented = 44; scan_config->dwell_extended = 90; scan_config->out_of_channel_time = htole32(0); scan_config->suspend_time = htole32(0); IEEE80211_ADDR_COPY(scan_config->mac_addr, vap ? vap->iv_myaddr : ic->ic_macaddr); scan_config->bcast_sta_id = sc->sc_aux_sta.sta_id; scan_config->channel_flags = IWM_CHANNEL_FLAG_EBS | IWM_CHANNEL_FLAG_ACCURATE_EBS | IWM_CHANNEL_FLAG_EBS_ADD | IWM_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; for (nchan = j = 0; j < ic->ic_nchans && nchan < sc->sc_capa_n_scan_channels; j++) { c = &ic->ic_channels[j]; /* For 2GHz, only populate 11b channels */ /* For 5GHz, only populate 11a channels */ /* * Catch other channels, in case we have 900MHz channels or * something in the chanlist. */ if (iwm_mvm_scan_skip_channel(c)) continue; scan_config->channel_array[nchan++] = ieee80211_mhz2ieee(c->ic_freq, 0); } scan_config->flags = htole32(IWM_SCAN_CONFIG_FLAG_ACTIVATE | IWM_SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | IWM_SCAN_CONFIG_FLAG_SET_TX_CHAINS | IWM_SCAN_CONFIG_FLAG_SET_RX_CHAINS | IWM_SCAN_CONFIG_FLAG_SET_AUX_STA_ID | IWM_SCAN_CONFIG_FLAG_SET_ALL_TIMES | IWM_SCAN_CONFIG_FLAG_SET_LEGACY_RATES | IWM_SCAN_CONFIG_FLAG_SET_MAC_ADDR | IWM_SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| IWM_SCAN_CONFIG_N_CHANNELS(nchan) | IWM_SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); hcmd.data[0] = scan_config; hcmd.len[0] = cmd_size; IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending UMAC scan config\n"); ret = iwm_send_cmd(sc, &hcmd); if (!ret) IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "UMAC scan config was sent successfully\n"); kfree(scan_config, M_DEVBUF); return ret; } int iwm_mvm_umac_scan(struct iwm_softc *sc) { struct iwm_host_cmd hcmd = { .id = iwm_cmd_id(IWM_SCAN_REQ_UMAC, IWM_ALWAYS_LONG_GROUP, 0), .len = { 0, }, .data = { NULL, }, .flags = IWM_CMD_SYNC, }; struct iwm_scan_req_umac *req; struct iwm_scan_req_umac_tail *tail; size_t req_len; int ssid_len = 0; const uint8_t *ssid = NULL; int ret; req_len = sizeof(struct iwm_scan_req_umac) + (sizeof(struct iwm_scan_channel_cfg_umac) * sc->sc_capa_n_scan_channels) + sizeof(struct iwm_scan_req_umac_tail); if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE) return ENOMEM; req = kmalloc(req_len, M_DEVBUF, M_INTWAIT | M_ZERO); if (req == NULL) return ENOMEM; hcmd.len[0] = (uint16_t)req_len; hcmd.data[0] = (void *)req; IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Handling ieee80211 scan request\n"); /* These timings correspond to iwlwifi's UNASSOC scan. */ req->active_dwell = 10; req->passive_dwell = 110; req->fragmented_dwell = 44; req->extended_dwell = 90; req->max_out_time = 0; req->suspend_time = 0; req->scan_priority = htole32(IWM_SCAN_PRIORITY_HIGH); req->ooc_priority = htole32(IWM_SCAN_PRIORITY_HIGH); req->n_channels = iwm_mvm_umac_scan_fill_channels(sc, (struct iwm_scan_channel_cfg_umac *)req->data, ssid_len != 0); req->general_flags = htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASS_ALL | IWM_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE | IWM_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL); tail = (void *)((char *)&req->data + sizeof(struct iwm_scan_channel_cfg_umac) * sc->sc_capa_n_scan_channels); /* Check if we're doing an active directed scan. */ if (ssid_len != 0) { tail->direct_scan[0].id = IEEE80211_ELEMID_SSID; tail->direct_scan[0].len = ssid_len; memcpy(tail->direct_scan[0].ssid, ssid, ssid_len); req->general_flags |= htole32(IWM_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT); } else { req->general_flags |= htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASSIVE); } if (isset(sc->sc_enabled_capa, IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) req->general_flags |= htole32(IWM_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED); ret = iwm_mvm_fill_probe_req(sc, &tail->preq); if (ret) { kfree(req, M_DEVBUF); return ret; } /* Specify the scan plan: We'll do one iteration. */ tail->schedule[0].interval = 0; tail->schedule[0].iter_count = 1; ret = iwm_send_cmd(sc, &hcmd); if (!ret) IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Scan request was sent successfully\n"); kfree(req, M_DEVBUF); return ret; } int iwm_mvm_lmac_scan(struct iwm_softc *sc) { struct iwm_host_cmd hcmd = { .id = IWM_SCAN_OFFLOAD_REQUEST_CMD, .len = { 0, }, .data = { NULL, }, .flags = IWM_CMD_SYNC, }; struct iwm_scan_req_lmac *req; size_t req_len; int ret; int ssid_len = 0; const uint8_t *ssid = NULL; IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Handling ieee80211 scan request\n"); req_len = sizeof(struct iwm_scan_req_lmac) + (sizeof(struct iwm_scan_channel_cfg_lmac) * sc->sc_capa_n_scan_channels) + sizeof(struct iwm_scan_probe_req); if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE) return ENOMEM; req = kmalloc(req_len, M_DEVBUF, M_INTWAIT | M_ZERO); if (req == NULL) return ENOMEM; hcmd.len[0] = (uint16_t)req_len; hcmd.data[0] = (void *)req; /* These timings correspond to iwlwifi's UNASSOC scan. */ req->active_dwell = 10; req->passive_dwell = 110; req->fragmented_dwell = 44; req->extended_dwell = 90; req->max_out_time = 0; req->suspend_time = 0; req->scan_prio = htole32(IWM_SCAN_PRIORITY_HIGH); req->rx_chain_select = iwm_mvm_scan_rx_chain(sc); req->iter_num = htole32(1); req->delay = 0; req->scan_flags = htole32(IWM_MVM_LMAC_SCAN_FLAG_PASS_ALL | IWM_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE | IWM_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL); if (ssid_len == 0) req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAG_PASSIVE); else req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION); if (isset(sc->sc_enabled_capa, IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED); req->flags = htole32(IWM_PHY_BAND_24); if (sc->nvm_data->sku_cap_band_52GHz_enable) req->flags |= htole32(IWM_PHY_BAND_5); req->filter_flags = htole32(IWM_MAC_FILTER_ACCEPT_GRP | IWM_MAC_FILTER_IN_BEACON); /* Tx flags 2 GHz. */ req->tx_cmd[0].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL | IWM_TX_CMD_FLG_BT_DIS); req->tx_cmd[0].rate_n_flags = iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_2GHZ, 1/*XXX*/); req->tx_cmd[0].sta_id = sc->sc_aux_sta.sta_id; /* Tx flags 5 GHz. */ req->tx_cmd[1].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL | IWM_TX_CMD_FLG_BT_DIS); req->tx_cmd[1].rate_n_flags = iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_5GHZ, 1/*XXX*/); req->tx_cmd[1].sta_id = sc->sc_aux_sta.sta_id; /* Check if we're doing an active directed scan. */ if (ssid_len != 0) { req->direct_scan[0].id = IEEE80211_ELEMID_SSID; req->direct_scan[0].len = ssid_len; memcpy(req->direct_scan[0].ssid, ssid, ssid_len); } req->n_channels = iwm_mvm_lmac_scan_fill_channels(sc, (struct iwm_scan_channel_cfg_lmac *)req->data, ssid_len != 0); ret = iwm_mvm_fill_probe_req(sc, (struct iwm_scan_probe_req *)(req->data + (sizeof(struct iwm_scan_channel_cfg_lmac) * sc->sc_capa_n_scan_channels))); if (ret) { kfree(req, M_DEVBUF); return ret; } /* Specify the scan plan: We'll do one iteration. */ req->schedule[0].iterations = 1; req->schedule[0].full_scan_mul = 1; /* Disable EBS. */ req->channel_opt[0].non_ebs_ratio = 1; req->channel_opt[1].non_ebs_ratio = 1; ret = iwm_send_cmd(sc, &hcmd); if (!ret) { IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Scan request was sent successfully\n"); } kfree(req, M_DEVBUF); return ret; }