+++ /dev/null
-/******************************************************************************
- *
- * 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) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- *
- * 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 <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- * BSD LICENSE
- *
- * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- * 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.
- *
- *****************************************************************************/
-
-#include <linux/etherdevice.h>
-#include <net/mac80211.h>
-
-#include "mvm.h"
-#include "fw-api-scan.h"
-
-#define IWL_DENSE_EBS_SCAN_RATIO 5
-#define IWL_SPARSE_EBS_SCAN_RATIO 1
-
-enum iwl_mvm_scan_type {
- IWL_SCAN_TYPE_UNASSOC,
- IWL_SCAN_TYPE_WILD,
- IWL_SCAN_TYPE_MILD,
- IWL_SCAN_TYPE_FRAGMENTED,
-};
-
-enum iwl_mvm_traffic_load {
- IWL_MVM_TRAFFIC_LOW,
- IWL_MVM_TRAFFIC_MEDIUM,
- IWL_MVM_TRAFFIC_HIGH,
-};
-
-struct iwl_mvm_scan_timing_params {
- u32 dwell_active;
- u32 dwell_passive;
- u32 dwell_fragmented;
- u32 suspend_time;
- u32 max_out_time;
-};
-
-static struct iwl_mvm_scan_timing_params scan_timing[] = {
- [IWL_SCAN_TYPE_UNASSOC] = {
- .dwell_active = 10,
- .dwell_passive = 110,
- .dwell_fragmented = 44,
- .suspend_time = 0,
- .max_out_time = 0,
- },
- [IWL_SCAN_TYPE_WILD] = {
- .dwell_active = 10,
- .dwell_passive = 110,
- .dwell_fragmented = 44,
- .suspend_time = 30,
- .max_out_time = 120,
- },
- [IWL_SCAN_TYPE_MILD] = {
- .dwell_active = 10,
- .dwell_passive = 110,
- .dwell_fragmented = 44,
- .suspend_time = 120,
- .max_out_time = 120,
- },
- [IWL_SCAN_TYPE_FRAGMENTED] = {
- .dwell_active = 10,
- .dwell_passive = 110,
- .dwell_fragmented = 44,
- .suspend_time = 95,
- .max_out_time = 44,
- },
-};
-
-struct iwl_mvm_scan_params {
- enum iwl_mvm_scan_type type;
- u32 n_channels;
- u16 delay;
- int n_ssids;
- struct cfg80211_ssid *ssids;
- struct ieee80211_channel **channels;
- u32 flags;
- u8 *mac_addr;
- u8 *mac_addr_mask;
- bool no_cck;
- bool pass_all;
- int n_match_sets;
- struct iwl_scan_probe_req preq;
- struct cfg80211_match_set *match_sets;
- int n_scan_plans;
- struct cfg80211_sched_scan_plan *scan_plans;
-};
-
-static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
-{
- if (mvm->scan_rx_ant != ANT_NONE)
- return mvm->scan_rx_ant;
- return iwl_mvm_get_valid_rx_ant(mvm);
-}
-
-static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
-{
- u16 rx_chain;
- u8 rx_ant;
-
- rx_ant = iwl_mvm_scan_rx_ant(mvm);
- rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
- rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
- rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
- rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
- return cpu_to_le16(rx_chain);
-}
-
-static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band)
-{
- if (band == IEEE80211_BAND_2GHZ)
- return cpu_to_le32(PHY_BAND_24);
- else
- return cpu_to_le32(PHY_BAND_5);
-}
-
-static inline __le32
-iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band,
- bool no_cck)
-{
- u32 tx_ant;
-
- mvm->scan_last_antenna_idx =
- iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
- mvm->scan_last_antenna_idx);
- tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
-
- if (band == IEEE80211_BAND_2GHZ && !no_cck)
- return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
- tx_ant);
- else
- return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
-}
-
-static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- int *global_cnt = data;
-
- if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
- mvmvif->phy_ctxt->id < MAX_PHYS)
- *global_cnt += 1;
-}
-
-static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
-{
- return IWL_MVM_TRAFFIC_LOW;
-}
-
-static enum
-iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct iwl_mvm_scan_params *params)
-{
- int global_cnt = 0;
- enum iwl_mvm_traffic_load load;
- bool low_latency;
-
- ieee80211_iterate_active_interfaces_atomic(mvm->hw,
- IEEE80211_IFACE_ITER_NORMAL,
- iwl_mvm_scan_condition_iterator,
- &global_cnt);
- if (!global_cnt)
- return IWL_SCAN_TYPE_UNASSOC;
-
- load = iwl_mvm_get_traffic_load(mvm);
- low_latency = iwl_mvm_low_latency(mvm);
-
- if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
- vif->type != NL80211_IFTYPE_P2P_DEVICE &&
- fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_FRAGMENTED_SCAN))
- return IWL_SCAN_TYPE_FRAGMENTED;
-
- if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
- return IWL_SCAN_TYPE_MILD;
-
- return IWL_SCAN_TYPE_WILD;
-}
-
-static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
-{
- /* require rrm scan whenever the fw supports it */
- return fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
-}
-
-static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
-{
- int max_probe_len;
-
- max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
-
- /* we create the 802.11 header and SSID element */
- max_probe_len -= 24 + 2;
-
- /* DS parameter set element is added on 2.4GHZ band if required */
- if (iwl_mvm_rrm_scan_needed(mvm))
- max_probe_len -= 3;
-
- return max_probe_len;
-}
-
-int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
-{
- int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
-
- /* TODO: [BUG] This function should return the maximum allowed size of
- * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
- * in the same command. So the correct implementation of this function
- * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
- * command has only 512 bytes and it would leave us with about 240
- * bytes for scan IEs, which is clearly not enough. So meanwhile
- * we will report an incorrect value. This may result in a failure to
- * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
- * functions with -ENOBUFS, if a large enough probe will be provided.
- */
- return max_ie_len;
-}
-
-static u8 *iwl_mvm_dump_channel_list(struct iwl_scan_results_notif *res,
- int num_res, u8 *buf, size_t buf_size)
-{
- int i;
- u8 *pos = buf, *end = buf + buf_size;
-
- for (i = 0; pos < end && i < num_res; i++)
- pos += snprintf(pos, end - pos, " %u", res[i].channel);
-
- /* terminate the string in case the buffer was too short */
- *(buf + buf_size - 1) = '\0';
-
- return buf;
-}
-
-void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
- u8 buf[256];
-
- IWL_DEBUG_SCAN(mvm,
- "Scan offload iteration complete: status=0x%x scanned channels=%d channels list: %s\n",
- notif->status, notif->scanned_channels,
- iwl_mvm_dump_channel_list(notif->results,
- notif->scanned_channels, buf,
- sizeof(buf)));
-}
-
-void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb)
-{
- IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
- ieee80211_sched_scan_results(mvm->hw);
-}
-
-static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
-{
- switch (status) {
- case IWL_SCAN_EBS_SUCCESS:
- return "successful";
- case IWL_SCAN_EBS_INACTIVE:
- return "inactive";
- case IWL_SCAN_EBS_FAILED:
- case IWL_SCAN_EBS_CHAN_NOT_FOUND:
- default:
- return "failed";
- }
-}
-
-void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
- bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
-
- /* scan status must be locked for proper checking */
- lockdep_assert_held(&mvm->mutex);
-
- /* We first check if we were stopping a scan, in which case we
- * just clear the stopping flag. Then we check if it was a
- * firmware initiated stop, in which case we need to inform
- * mac80211.
- * Note that we can have a stopping and a running scan
- * simultaneously, but we can't have two different types of
- * scans stopping or running at the same time (since LMAC
- * doesn't support it).
- */
-
- if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
- WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
-
- IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
- aborted ? "aborted" : "completed",
- iwl_mvm_ebs_status_str(scan_notif->ebs_status));
- IWL_DEBUG_SCAN(mvm,
- "Last line %d, Last iteration %d, Time after last iteration %d\n",
- scan_notif->last_schedule_line,
- scan_notif->last_schedule_iteration,
- __le32_to_cpu(scan_notif->time_after_last_iter));
-
- mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
- } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
- IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
- aborted ? "aborted" : "completed",
- iwl_mvm_ebs_status_str(scan_notif->ebs_status));
-
- mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
- } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
- WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
-
- IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
- aborted ? "aborted" : "completed",
- iwl_mvm_ebs_status_str(scan_notif->ebs_status));
- IWL_DEBUG_SCAN(mvm,
- "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
- scan_notif->last_schedule_line,
- scan_notif->last_schedule_iteration,
- __le32_to_cpu(scan_notif->time_after_last_iter));
-
- mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
- ieee80211_sched_scan_stopped(mvm->hw);
- } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
- IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
- aborted ? "aborted" : "completed",
- iwl_mvm_ebs_status_str(scan_notif->ebs_status));
-
- mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
- ieee80211_scan_completed(mvm->hw,
- scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
- iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
- }
-
- mvm->last_ebs_successful =
- scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
- scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
-}
-
-static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
-{
- int i;
-
- for (i = 0; i < PROBE_OPTION_MAX; i++) {
- if (!ssid_list[i].len)
- break;
- if (ssid_list[i].len == ssid_len &&
- !memcmp(ssid_list->ssid, ssid, ssid_len))
- return i;
- }
- return -1;
-}
-
-/* We insert the SSIDs in an inverted order, because the FW will
- * invert it back.
- */
-static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
- struct iwl_ssid_ie *ssids,
- u32 *ssid_bitmap)
-{
- int i, j;
- int index;
-
- /*
- * copy SSIDs from match list.
- * iwl_config_sched_scan_profiles() uses the order of these ssids to
- * config match list.
- */
- for (i = 0, j = params->n_match_sets - 1;
- j >= 0 && i < PROBE_OPTION_MAX;
- i++, j--) {
- /* skip empty SSID matchsets */
- if (!params->match_sets[j].ssid.ssid_len)
- continue;
- ssids[i].id = WLAN_EID_SSID;
- ssids[i].len = params->match_sets[j].ssid.ssid_len;
- memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
- ssids[i].len);
- }
-
- /* add SSIDs from scan SSID list */
- *ssid_bitmap = 0;
- for (j = params->n_ssids - 1;
- j >= 0 && i < PROBE_OPTION_MAX;
- i++, j--) {
- index = iwl_ssid_exist(params->ssids[j].ssid,
- params->ssids[j].ssid_len,
- ssids);
- if (index < 0) {
- ssids[i].id = WLAN_EID_SSID;
- ssids[i].len = params->ssids[j].ssid_len;
- memcpy(ssids[i].ssid, params->ssids[j].ssid,
- ssids[i].len);
- *ssid_bitmap |= BIT(i);
- } else {
- *ssid_bitmap |= BIT(index);
- }
- }
-}
-
-static int
-iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
- struct cfg80211_sched_scan_request *req)
-{
- struct iwl_scan_offload_profile *profile;
- struct iwl_scan_offload_profile_cfg *profile_cfg;
- struct iwl_scan_offload_blacklist *blacklist;
- struct iwl_host_cmd cmd = {
- .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
- .len[1] = sizeof(*profile_cfg),
- .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
- .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
- };
- int blacklist_len;
- int i;
- int ret;
-
- if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
- return -EIO;
-
- if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
- blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
- else
- blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
-
- blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL);
- if (!blacklist)
- return -ENOMEM;
-
- profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL);
- if (!profile_cfg) {
- ret = -ENOMEM;
- goto free_blacklist;
- }
-
- cmd.data[0] = blacklist;
- cmd.len[0] = sizeof(*blacklist) * blacklist_len;
- cmd.data[1] = profile_cfg;
-
- /* No blacklist configuration */
-
- profile_cfg->num_profiles = req->n_match_sets;
- profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN;
- profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN;
- profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN;
- if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
- profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
-
- for (i = 0; i < req->n_match_sets; i++) {
- profile = &profile_cfg->profiles[i];
- profile->ssid_index = i;
- /* Support any cipher and auth algorithm */
- profile->unicast_cipher = 0xff;
- profile->auth_alg = 0xff;
- profile->network_type = IWL_NETWORK_TYPE_ANY;
- profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
- profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
- }
-
- IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
-
- ret = iwl_mvm_send_cmd(mvm, &cmd);
- kfree(profile_cfg);
-free_blacklist:
- kfree(blacklist);
-
- return ret;
-}
-
-static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
- struct cfg80211_sched_scan_request *req)
-{
- if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
- IWL_DEBUG_SCAN(mvm,
- "Sending scheduled scan with filtering, n_match_sets %d\n",
- req->n_match_sets);
- return false;
- }
-
- IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
- return true;
-}
-
-static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
-{
- int ret;
- struct iwl_host_cmd cmd = {
- .id = SCAN_OFFLOAD_ABORT_CMD,
- };
- u32 status;
-
- ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
- if (ret)
- return ret;
-
- if (status != CAN_ABORT_STATUS) {
- /*
- * The scan abort will return 1 for success or
- * 2 for "failure". A failure condition can be
- * due to simply not being in an active scan which
- * can occur if we send the scan abort before the
- * microcode has notified us that a scan is completed.
- */
- IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
- ret = -ENOENT;
- }
-
- return ret;
-}
-
-static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
- struct iwl_scan_req_tx_cmd *tx_cmd,
- bool no_cck)
-{
- tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
- TX_CMD_FLG_BT_DIS);
- tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
- IEEE80211_BAND_2GHZ,
- no_cck);
- tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
-
- tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
- TX_CMD_FLG_BT_DIS);
- tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
- IEEE80211_BAND_5GHZ,
- no_cck);
- tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
-}
-
-static void
-iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
- struct ieee80211_channel **channels,
- int n_channels, u32 ssid_bitmap,
- struct iwl_scan_req_lmac *cmd)
-{
- struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
- int i;
-
- for (i = 0; i < n_channels; i++) {
- channel_cfg[i].channel_num =
- cpu_to_le16(channels[i]->hw_value);
- channel_cfg[i].iter_count = cpu_to_le16(1);
- channel_cfg[i].iter_interval = 0;
- channel_cfg[i].flags =
- cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
- ssid_bitmap);
- }
-}
-
-static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
- size_t len, u8 *const pos)
-{
- static const u8 before_ds_params[] = {
- WLAN_EID_SSID,
- WLAN_EID_SUPP_RATES,
- WLAN_EID_REQUEST,
- WLAN_EID_EXT_SUPP_RATES,
- };
- size_t offs;
- u8 *newpos = pos;
-
- if (!iwl_mvm_rrm_scan_needed(mvm)) {
- memcpy(newpos, ies, len);
- return newpos + len;
- }
-
- offs = ieee80211_ie_split(ies, len,
- before_ds_params,
- ARRAY_SIZE(before_ds_params),
- 0);
-
- memcpy(newpos, ies, offs);
- newpos += offs;
-
- /* Add a placeholder for DS Parameter Set element */
- *newpos++ = WLAN_EID_DS_PARAMS;
- *newpos++ = 1;
- *newpos++ = 0;
-
- memcpy(newpos, ies + offs, len - offs);
- newpos += len - offs;
-
- return newpos;
-}
-
-static void
-iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct ieee80211_scan_ies *ies,
- struct iwl_mvm_scan_params *params)
-{
- struct ieee80211_mgmt *frame = (void *)params->preq.buf;
- u8 *pos, *newpos;
- const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
- params->mac_addr : NULL;
-
- /*
- * Unfortunately, right now the offload scan doesn't support randomising
- * within the firmware, so until the firmware API is ready we implement
- * it in the driver. This means that the scan iterations won't really be
- * random, only when it's restarted, but at least that helps a bit.
- */
- if (mac_addr)
- get_random_mask_addr(frame->sa, mac_addr,
- params->mac_addr_mask);
- else
- memcpy(frame->sa, vif->addr, ETH_ALEN);
-
- frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
- eth_broadcast_addr(frame->da);
- eth_broadcast_addr(frame->bssid);
- frame->seq_ctrl = 0;
-
- pos = frame->u.probe_req.variable;
- *pos++ = WLAN_EID_SSID;
- *pos++ = 0;
-
- params->preq.mac_header.offset = 0;
- params->preq.mac_header.len = cpu_to_le16(24 + 2);
-
- /* Insert ds parameter set element on 2.4 GHz band */
- newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
- ies->ies[IEEE80211_BAND_2GHZ],
- ies->len[IEEE80211_BAND_2GHZ],
- pos);
- params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
- params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
- pos = newpos;
-
- memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ],
- ies->len[IEEE80211_BAND_5GHZ]);
- params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
- params->preq.band_data[1].len =
- cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]);
- pos += ies->len[IEEE80211_BAND_5GHZ];
-
- memcpy(pos, ies->common_ies, ies->common_ie_len);
- params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
- params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
-}
-
-static __le32 iwl_mvm_scan_priority(struct iwl_mvm *mvm,
- enum iwl_scan_priority_ext prio)
-{
- if (fw_has_api(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY))
- return cpu_to_le32(prio);
-
- if (prio <= IWL_SCAN_PRIORITY_EXT_2)
- return cpu_to_le32(IWL_SCAN_PRIORITY_LOW);
-
- if (prio <= IWL_SCAN_PRIORITY_EXT_4)
- return cpu_to_le32(IWL_SCAN_PRIORITY_MEDIUM);
-
- return cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
-}
-
-static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
- struct iwl_scan_req_lmac *cmd,
- struct iwl_mvm_scan_params *params)
-{
- cmd->active_dwell = scan_timing[params->type].dwell_active;
- cmd->passive_dwell = scan_timing[params->type].dwell_passive;
- cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented;
- cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
- cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
- cmd->scan_prio = iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
-}
-
-static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
- struct ieee80211_scan_ies *ies,
- int n_channels)
-{
- return ((n_ssids <= PROBE_OPTION_MAX) &&
- (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
- (ies->common_ie_len +
- ies->len[NL80211_BAND_2GHZ] +
- ies->len[NL80211_BAND_5GHZ] <=
- iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
-}
-
-static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
-
- /* We can only use EBS if:
- * 1. the feature is supported;
- * 2. the last EBS was successful;
- * 3. if only single scan, the single scan EBS API is supported;
- * 4. it's not a p2p find operation.
- */
- return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
- mvm->last_ebs_successful &&
- vif->type != NL80211_IFTYPE_P2P_DEVICE);
-}
-
-static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
- struct iwl_mvm_scan_params *params)
-{
- int flags = 0;
-
- if (params->n_ssids == 0)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
-
- if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
-
- if (params->type == IWL_SCAN_TYPE_FRAGMENTED)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
-
- if (iwl_mvm_rrm_scan_needed(mvm))
- flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
-
- if (params->pass_all)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
- else
- flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- if (mvm->scan_iter_notif_enabled)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
-#endif
-
- return flags;
-}
-
-static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct iwl_mvm_scan_params *params)
-{
- struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
- struct iwl_scan_probe_req *preq =
- (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
- mvm->fw->ucode_capa.n_scan_channels);
- u32 ssid_bitmap = 0;
- int i;
-
- lockdep_assert_held(&mvm->mutex);
-
- memset(cmd, 0, ksize(cmd));
-
- if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
- return -EINVAL;
-
- iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
-
- cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
- cmd->iter_num = cpu_to_le32(1);
- cmd->n_channels = (u8)params->n_channels;
-
- cmd->delay = cpu_to_le32(params->delay);
-
- cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params));
-
- cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band);
- cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
- MAC_FILTER_IN_BEACON);
- iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
- iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
-
- /* this API uses bits 1-20 instead of 0-19 */
- ssid_bitmap <<= 1;
-
- for (i = 0; i < params->n_scan_plans; i++) {
- struct cfg80211_sched_scan_plan *scan_plan =
- ¶ms->scan_plans[i];
-
- cmd->schedule[i].delay =
- cpu_to_le16(scan_plan->interval);
- cmd->schedule[i].iterations = scan_plan->iterations;
- cmd->schedule[i].full_scan_mul = 1;
- }
-
- /*
- * If the number of iterations of the last scan plan is set to
- * zero, it should run infinitely. However, this is not always the case.
- * For example, when regular scan is requested the driver sets one scan
- * plan with one iteration.
- */
- if (!cmd->schedule[i - 1].iterations)
- cmd->schedule[i - 1].iterations = 0xff;
-
- if (iwl_mvm_scan_use_ebs(mvm, vif)) {
- cmd->channel_opt[0].flags =
- cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
- IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
- IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
- cmd->channel_opt[0].non_ebs_ratio =
- cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
- cmd->channel_opt[1].flags =
- cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
- IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
- IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
- cmd->channel_opt[1].non_ebs_ratio =
- cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
- }
-
- iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
- params->n_channels, ssid_bitmap, cmd);
-
- *preq = params->preq;
-
- return 0;
-}
-
-static int rate_to_scan_rate_flag(unsigned int rate)
-{
- static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
- [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
- [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
- [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
- [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
- [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
- [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
- [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
- [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
- [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
- [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
- [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
- [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
- };
-
- return rate_to_scan_rate[rate];
-}
-
-static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
-{
- struct ieee80211_supported_band *band;
- unsigned int rates = 0;
- int i;
-
- band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
- for (i = 0; i < band->n_bitrates; i++)
- rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
- band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
- for (i = 0; i < band->n_bitrates; i++)
- rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
-
- /* Set both basic rates and supported rates */
- rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
-
- return cpu_to_le32(rates);
-}
-
-int iwl_mvm_config_scan(struct iwl_mvm *mvm)
-{
- struct iwl_scan_config *scan_config;
- struct ieee80211_supported_band *band;
- int num_channels =
- mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels +
- mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
- int ret, i, j = 0, cmd_size;
- struct iwl_host_cmd cmd = {
- .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
- };
-
- if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
- return -ENOBUFS;
-
- cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels;
-
- scan_config = kzalloc(cmd_size, GFP_KERNEL);
- if (!scan_config)
- return -ENOMEM;
-
- scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE |
- SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
- SCAN_CONFIG_FLAG_SET_TX_CHAINS |
- SCAN_CONFIG_FLAG_SET_RX_CHAINS |
- SCAN_CONFIG_FLAG_SET_ALL_TIMES |
- SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
- SCAN_CONFIG_FLAG_SET_MAC_ADDR |
- SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS|
- SCAN_CONFIG_N_CHANNELS(num_channels));
- scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
- scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
- scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm);
- scan_config->out_of_channel_time = cpu_to_le32(170);
- scan_config->suspend_time = cpu_to_le32(30);
- scan_config->dwell_active = 20;
- scan_config->dwell_passive = 110;
- scan_config->dwell_fragmented = 20;
-
- memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
-
- scan_config->bcast_sta_id = mvm->aux_sta.sta_id;
- scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS |
- IWL_CHANNEL_FLAG_ACCURATE_EBS |
- IWL_CHANNEL_FLAG_EBS_ADD |
- IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
-
- band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
- for (i = 0; i < band->n_channels; i++, j++)
- scan_config->channel_array[j] = band->channels[i].hw_value;
- band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
- for (i = 0; i < band->n_channels; i++, j++)
- scan_config->channel_array[j] = band->channels[i].hw_value;
-
- cmd.data[0] = scan_config;
- cmd.len[0] = cmd_size;
- cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
-
- IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
-
- ret = iwl_mvm_send_cmd(mvm, &cmd);
-
- kfree(scan_config);
- return ret;
-}
-
-static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
-{
- int i;
-
- for (i = 0; i < mvm->max_scans; i++)
- if (mvm->scan_uid_status[i] == status)
- return i;
-
- return -ENOENT;
-}
-
-static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
-{
- return params->n_scan_plans == 1 &&
- params->scan_plans[0].iterations == 1;
-}
-
-static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
- struct iwl_scan_req_umac *cmd,
- struct iwl_mvm_scan_params *params)
-{
- cmd->active_dwell = scan_timing[params->type].dwell_active;
- cmd->passive_dwell = scan_timing[params->type].dwell_passive;
- cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented;
- cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
- cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
- cmd->scan_priority =
- iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
-
- if (iwl_mvm_is_regular_scan(params))
- cmd->ooc_priority =
- iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
- else
- cmd->ooc_priority =
- iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_2);
-}
-
-static void
-iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
- struct ieee80211_channel **channels,
- int n_channels, u32 ssid_bitmap,
- struct iwl_scan_req_umac *cmd)
-{
- struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data;
- int i;
-
- for (i = 0; i < n_channels; i++) {
- channel_cfg[i].flags = cpu_to_le32(ssid_bitmap);
- channel_cfg[i].channel_num = channels[i]->hw_value;
- channel_cfg[i].iter_count = 1;
- channel_cfg[i].iter_interval = 0;
- }
-}
-
-static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
- struct iwl_mvm_scan_params *params)
-{
- int flags = 0;
-
- if (params->n_ssids == 0)
- flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
-
- if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
-
- if (params->type == IWL_SCAN_TYPE_FRAGMENTED)
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
-
- if (iwl_mvm_rrm_scan_needed(mvm))
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
-
- if (params->pass_all)
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
- else
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
-
- if (!iwl_mvm_is_regular_scan(params))
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- if (mvm->scan_iter_notif_enabled)
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
-#endif
- return flags;
-}
-
-static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct iwl_mvm_scan_params *params,
- int type)
-{
- struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
- struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data +
- sizeof(struct iwl_scan_channel_cfg_umac) *
- mvm->fw->ucode_capa.n_scan_channels;
- int uid, i;
- u32 ssid_bitmap = 0;
-
- lockdep_assert_held(&mvm->mutex);
-
- if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
- return -EINVAL;
-
- uid = iwl_mvm_scan_uid_by_status(mvm, 0);
- if (uid < 0)
- return uid;
-
- memset(cmd, 0, ksize(cmd));
-
- iwl_mvm_scan_umac_dwell(mvm, cmd, params);
-
- mvm->scan_uid_status[uid] = type;
-
- cmd->uid = cpu_to_le32(uid);
- cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params));
-
- if (type == IWL_MVM_SCAN_SCHED)
- cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
-
- if (iwl_mvm_scan_use_ebs(mvm, vif))
- cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
- IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
- IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
-
- cmd->n_channels = params->n_channels;
-
- iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap);
-
- iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
- params->n_channels, ssid_bitmap, cmd);
-
- for (i = 0; i < params->n_scan_plans; i++) {
- struct cfg80211_sched_scan_plan *scan_plan =
- ¶ms->scan_plans[i];
-
- sec_part->schedule[i].iter_count = scan_plan->iterations;
- sec_part->schedule[i].interval =
- cpu_to_le16(scan_plan->interval);
- }
-
- /*
- * If the number of iterations of the last scan plan is set to
- * zero, it should run infinitely. However, this is not always the case.
- * For example, when regular scan is requested the driver sets one scan
- * plan with one iteration.
- */
- if (!sec_part->schedule[i - 1].iter_count)
- sec_part->schedule[i - 1].iter_count = 0xff;
-
- sec_part->delay = cpu_to_le16(params->delay);
- sec_part->preq = params->preq;
-
- return 0;
-}
-
-static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
-{
- return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
-}
-
-static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
-{
- /* This looks a bit arbitrary, but the idea is that if we run
- * out of possible simultaneous scans and the userspace is
- * trying to run a scan type that is already running, we
- * return -EBUSY. But if the userspace wants to start a
- * different type of scan, we stop the opposite type to make
- * space for the new request. The reason is backwards
- * compatibility with old wpa_supplicant that wouldn't stop a
- * scheduled scan before starting a normal scan.
- */
-
- if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
- return 0;
-
- /* Use a switch, even though this is a bitmask, so that more
- * than one bits set will fall in default and we will warn.
- */
- switch (type) {
- case IWL_MVM_SCAN_REGULAR:
- if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
- return -EBUSY;
- return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
- case IWL_MVM_SCAN_SCHED:
- if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
- return -EBUSY;
- iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
- case IWL_MVM_SCAN_NETDETECT:
- /* No need to stop anything for net-detect since the
- * firmware is restarted anyway. This way, any sched
- * scans that were running will be restarted when we
- * resume.
- */
- return 0;
- default:
- WARN_ON(1);
- break;
- }
-
- return -EIO;
-}
-
-int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct cfg80211_scan_request *req,
- struct ieee80211_scan_ies *ies)
-{
- struct iwl_host_cmd hcmd = {
- .len = { iwl_mvm_scan_size(mvm), },
- .data = { mvm->scan_cmd, },
- .dataflags = { IWL_HCMD_DFL_NOCOPY, },
- };
- struct iwl_mvm_scan_params params = {};
- int ret;
- struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
-
- lockdep_assert_held(&mvm->mutex);
-
- if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
- IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
- return -EBUSY;
- }
-
- ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
- if (ret)
- return ret;
-
- /* we should have failed registration if scan_cmd was NULL */
- if (WARN_ON(!mvm->scan_cmd))
- return -ENOMEM;
-
- if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
- return -ENOBUFS;
-
- params.n_ssids = req->n_ssids;
- params.flags = req->flags;
- params.n_channels = req->n_channels;
- params.delay = 0;
- params.ssids = req->ssids;
- params.channels = req->channels;
- params.mac_addr = req->mac_addr;
- params.mac_addr_mask = req->mac_addr_mask;
- params.no_cck = req->no_cck;
- params.pass_all = true;
- params.n_match_sets = 0;
- params.match_sets = NULL;
-
- params.scan_plans = &scan_plan;
- params.n_scan_plans = 1;
-
- params.type = iwl_mvm_get_scan_type(mvm, vif, ¶ms);
-
- iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
-
- if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
- hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
- ret = iwl_mvm_scan_umac(mvm, vif, ¶ms,
- IWL_MVM_SCAN_REGULAR);
- } else {
- hcmd.id = SCAN_OFFLOAD_REQUEST_CMD;
- ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms);
- }
-
- if (ret)
- return ret;
-
- ret = iwl_mvm_send_cmd(mvm, &hcmd);
- if (ret) {
- /* If the scan failed, it usually means that the FW was unable
- * to allocate the time events. Warn on it, but maybe we
- * should try to send the command again with different params.
- */
- IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
- return ret;
- }
-
- IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
- mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
- iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
-
- return 0;
-}
-
-int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct cfg80211_sched_scan_request *req,
- struct ieee80211_scan_ies *ies,
- int type)
-{
- struct iwl_host_cmd hcmd = {
- .len = { iwl_mvm_scan_size(mvm), },
- .data = { mvm->scan_cmd, },
- .dataflags = { IWL_HCMD_DFL_NOCOPY, },
- };
- struct iwl_mvm_scan_params params = {};
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
- IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
- return -EBUSY;
- }
-
- ret = iwl_mvm_check_running_scans(mvm, type);
- if (ret)
- return ret;
-
- /* we should have failed registration if scan_cmd was NULL */
- if (WARN_ON(!mvm->scan_cmd))
- return -ENOMEM;
-
- if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
- return -ENOBUFS;
-
- params.n_ssids = req->n_ssids;
- params.flags = req->flags;
- params.n_channels = req->n_channels;
- params.ssids = req->ssids;
- params.channels = req->channels;
- params.mac_addr = req->mac_addr;
- params.mac_addr_mask = req->mac_addr_mask;
- params.no_cck = false;
- params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
- params.n_match_sets = req->n_match_sets;
- params.match_sets = req->match_sets;
- if (!req->n_scan_plans)
- return -EINVAL;
-
- params.n_scan_plans = req->n_scan_plans;
- params.scan_plans = req->scan_plans;
-
- params.type = iwl_mvm_get_scan_type(mvm, vif, ¶ms);
-
- /* In theory, LMAC scans can handle a 32-bit delay, but since
- * waiting for over 18 hours to start the scan is a bit silly
- * and to keep it aligned with UMAC scans (which only support
- * 16-bit delays), trim it down to 16-bits.
- */
- if (req->delay > U16_MAX) {
- IWL_DEBUG_SCAN(mvm,
- "delay value is > 16-bits, set to max possible\n");
- params.delay = U16_MAX;
- } else {
- params.delay = req->delay;
- }
-
- ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
- if (ret)
- return ret;
-
- iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
-
- if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
- hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
- ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, IWL_MVM_SCAN_SCHED);
- } else {
- hcmd.id = SCAN_OFFLOAD_REQUEST_CMD;
- ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms);
- }
-
- if (ret)
- return ret;
-
- ret = iwl_mvm_send_cmd(mvm, &hcmd);
- if (!ret) {
- IWL_DEBUG_SCAN(mvm,
- "Sched scan request was sent successfully\n");
- mvm->scan_status |= type;
- } else {
- /* If the scan failed, it usually means that the FW was unable
- * to allocate the time events. Warn on it, but maybe we
- * should try to send the command again with different params.
- */
- IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
- }
-
- return ret;
-}
-
-void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_umac_scan_complete *notif = (void *)pkt->data;
- u32 uid = __le32_to_cpu(notif->uid);
- bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
-
- if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
- return;
-
- /* if the scan is already stopping, we don't need to notify mac80211 */
- if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
- ieee80211_scan_completed(mvm->hw, aborted);
- iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
- } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
- ieee80211_sched_scan_stopped(mvm->hw);
- }
-
- mvm->scan_status &= ~mvm->scan_uid_status[uid];
- IWL_DEBUG_SCAN(mvm,
- "Scan completed, uid %u type %u, status %s, EBS status %s\n",
- uid, mvm->scan_uid_status[uid],
- notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
- "completed" : "aborted",
- iwl_mvm_ebs_status_str(notif->ebs_status));
- IWL_DEBUG_SCAN(mvm,
- "Last line %d, Last iteration %d, Time from last iteration %d\n",
- notif->last_schedule, notif->last_iter,
- __le32_to_cpu(notif->time_from_last_iter));
-
- if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
- notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
- mvm->last_ebs_successful = false;
-
- mvm->scan_uid_status[uid] = 0;
-}
-
-void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
- u8 buf[256];
-
- IWL_DEBUG_SCAN(mvm,
- "UMAC Scan iteration complete: status=0x%x scanned_channels=%d channels list: %s\n",
- notif->status, notif->scanned_channels,
- iwl_mvm_dump_channel_list(notif->results,
- notif->scanned_channels, buf,
- sizeof(buf)));
-}
-
-static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
-{
- struct iwl_umac_scan_abort cmd = {};
- int uid, ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- /* We should always get a valid index here, because we already
- * checked that this type of scan was running in the generic
- * code.
- */
- uid = iwl_mvm_scan_uid_by_status(mvm, type);
- if (WARN_ON_ONCE(uid < 0))
- return uid;
-
- cmd.uid = cpu_to_le32(uid);
-
- IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
-
- ret = iwl_mvm_send_cmd_pdu(mvm,
- iwl_cmd_id(SCAN_ABORT_UMAC,
- IWL_ALWAYS_LONG_GROUP, 0),
- 0, sizeof(cmd), &cmd);
- if (!ret)
- mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
-
- return ret;
-}
-
-static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
-{
- struct iwl_notification_wait wait_scan_done;
- static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
- SCAN_OFFLOAD_COMPLETE, };
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
- scan_done_notif,
- ARRAY_SIZE(scan_done_notif),
- NULL, NULL);
-
- IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
-
- if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
- ret = iwl_mvm_umac_scan_abort(mvm, type);
- else
- ret = iwl_mvm_lmac_scan_abort(mvm);
-
- if (ret) {
- IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
- iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
- return ret;
- }
-
- ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ);
-
- return ret;
-}
-
-int iwl_mvm_scan_size(struct iwl_mvm *mvm)
-{
- if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
- return sizeof(struct iwl_scan_req_umac) +
- sizeof(struct iwl_scan_channel_cfg_umac) *
- mvm->fw->ucode_capa.n_scan_channels +
- sizeof(struct iwl_scan_req_umac_tail);
-
- return sizeof(struct iwl_scan_req_lmac) +
- sizeof(struct iwl_scan_channel_cfg_lmac) *
- mvm->fw->ucode_capa.n_scan_channels +
- sizeof(struct iwl_scan_probe_req);
-}
-
-/*
- * This function is used in nic restart flow, to inform mac80211 about scans
- * that was aborted by restart flow or by an assert.
- */
-void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
-{
- if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
- int uid, i;
-
- uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
- if (uid >= 0) {
- ieee80211_scan_completed(mvm->hw, true);
- mvm->scan_uid_status[uid] = 0;
- }
- uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
- if (uid >= 0 && !mvm->restart_fw) {
- ieee80211_sched_scan_stopped(mvm->hw);
- mvm->scan_uid_status[uid] = 0;
- }
-
- /* We shouldn't have any UIDs still set. Loop over all the
- * UIDs to make sure there's nothing left there and warn if
- * any is found.
- */
- for (i = 0; i < mvm->max_scans; i++) {
- if (WARN_ONCE(mvm->scan_uid_status[i],
- "UMAC scan UID %d status was not cleaned\n",
- i))
- mvm->scan_uid_status[i] = 0;
- }
- } else {
- if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
- ieee80211_scan_completed(mvm->hw, true);
-
- /* Sched scan will be restarted by mac80211 in
- * restart_hw, so do not report if FW is about to be
- * restarted.
- */
- if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && !mvm->restart_fw)
- ieee80211_sched_scan_stopped(mvm->hw);
- }
-}
-
-int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
-{
- int ret;
-
- if (!(mvm->scan_status & type))
- return 0;
-
- if (iwl_mvm_is_radio_killed(mvm)) {
- ret = 0;
- goto out;
- }
-
- ret = iwl_mvm_scan_stop_wait(mvm, type);
- if (!ret)
- mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
-out:
- /* Clear the scan status so the next scan requests will
- * succeed and mark the scan as stopping, so that the Rx
- * handler doesn't do anything, as the scan was stopped from
- * above.
- */
- mvm->scan_status &= ~type;
-
- if (type == IWL_MVM_SCAN_REGULAR) {
- /* Since the rx handler won't do anything now, we have
- * to release the scan reference here.
- */
- iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
- if (notify)
- ieee80211_scan_completed(mvm->hw, true);
- } else if (notify) {
- ieee80211_sched_scan_stopped(mvm->hw);
- }
-
- return ret;
-}
projects / cascardo / linux.git / blobdiff