* GPL LICENSE SUMMARY
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ * 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
* BSD LICENSE
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include <net/mac80211.h>
#include "mvm.h"
-#include "iwl-eeprom-parse.h"
#include "fw-api-scan.h"
-#define IWL_PLCP_QUIET_THRESH 1
-#define IWL_ACTIVE_QUIET_TIME 10
#define IWL_DENSE_EBS_SCAN_RATIO 5
#define IWL_SPARSE_EBS_SCAN_RATIO 1
-struct iwl_mvm_scan_params {
- u32 max_out_time;
+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;
- bool passive_fragmented;
- struct _dwell {
- u16 passive;
- u16 active;
- u16 fragmented;
- } dwell[IEEE80211_NUM_BANDS];
+ u32 max_out_time;
};
-enum iwl_umac_scan_uid_type {
- IWL_UMAC_SCAN_UID_REG_SCAN = BIT(0),
- IWL_UMAC_SCAN_UID_SCHED_SCAN = BIT(1),
- IWL_UMAC_SCAN_UID_ALL = IWL_UMAC_SCAN_UID_REG_SCAN |
- IWL_UMAC_SCAN_UID_SCHED_SCAN,
+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,
+ },
};
-static int iwl_umac_scan_stop(struct iwl_mvm *mvm,
- enum iwl_umac_scan_uid_type type, bool notify);
+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)
{
return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
}
-/*
- * We insert the SSIDs in an inverted order, because the FW will
- * invert it back. The most prioritized SSID, which is first in the
- * request list, is not copied here, but inserted directly to the probe
- * request.
- */
-static void iwl_mvm_scan_fill_ssids(struct iwl_ssid_ie *cmd_ssid,
- struct cfg80211_ssid *ssids,
- int n_ssids, int first)
-{
- int fw_idx, req_idx;
-
- for (req_idx = n_ssids - 1, fw_idx = 0; req_idx >= first;
- req_idx--, fw_idx++) {
- cmd_ssid[fw_idx].id = WLAN_EID_SSID;
- cmd_ssid[fw_idx].len = ssids[req_idx].ssid_len;
- memcpy(cmd_ssid[fw_idx].ssid,
- ssids[req_idx].ssid,
- ssids[req_idx].ssid_len);
- }
-}
-
-/*
- * 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 u16 iwl_mvm_get_active_dwell(struct iwl_mvm *mvm,
- enum ieee80211_band band, int n_ssids)
-{
- if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BASIC_DWELL)
- return 10;
- if (band == IEEE80211_BAND_2GHZ)
- return 20 + 3 * (n_ssids + 1);
- return 10 + 2 * (n_ssids + 1);
-}
-
-static u16 iwl_mvm_get_passive_dwell(struct iwl_mvm *mvm,
- enum ieee80211_band band)
-{
- if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BASIC_DWELL)
- return 110;
- return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10;
-}
-
static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
*global_cnt += 1;
}
-static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- int n_ssids, u32 flags,
- struct iwl_mvm_scan_params *params)
+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 ieee80211_band band;
- u8 frag_passive_dwell = 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)
- goto not_bound;
-
- params->suspend_time = 30;
- params->max_out_time = 120;
-
- if (iwl_mvm_low_latency(mvm)) {
- if (mvm->fw->ucode_capa.api[0] &
- IWL_UCODE_TLV_API_FRAGMENTED_SCAN) {
- params->suspend_time = 105;
- /*
- * If there is more than one active interface make
- * passive scan more fragmented.
- */
- frag_passive_dwell = 40;
- params->max_out_time = frag_passive_dwell;
- } else {
- params->suspend_time = 120;
- params->max_out_time = 120;
- }
- }
-
- if (frag_passive_dwell && (mvm->fw->ucode_capa.api[0] &
- IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
- /*
- * P2P device scan should not be fragmented to avoid negative
- * impact on P2P device discovery. Configure max_out_time to be
- * equal to dwell time on passive channel. Take a longest
- * possible value, one that corresponds to 2GHz band
- */
- if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
- u32 passive_dwell =
- iwl_mvm_get_passive_dwell(mvm,
- IEEE80211_BAND_2GHZ);
- params->max_out_time = passive_dwell;
- } else {
- params->passive_fragmented = true;
- }
- }
+ return IWL_SCAN_TYPE_UNASSOC;
- if (flags & NL80211_SCAN_FLAG_LOW_PRIORITY)
- params->max_out_time = 200;
+ load = iwl_mvm_get_traffic_load(mvm);
+ low_latency = iwl_mvm_low_latency(mvm);
-not_bound:
+ 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;
- for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
- if (params->passive_fragmented)
- params->dwell[band].fragmented = frag_passive_dwell;
+ if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
+ return IWL_SCAN_TYPE_MILD;
- params->dwell[band].passive = iwl_mvm_get_passive_dwell(mvm,
- band);
- params->dwell[band].active = iwl_mvm_get_active_dwell(mvm, band,
- n_ssids);
- }
+ 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 mvm->fw->ucode_capa.capa[0] &
- IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT;
+ 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,
- bool is_sched_scan)
+static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
{
int max_probe_len;
return max_probe_len;
}
-int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm, bool is_sched_scan)
+int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
{
- int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm, is_sched_scan);
+ 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
return max_ie_len;
}
-int iwl_mvm_rx_scan_offload_iter_complete_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb,
- struct iwl_device_cmd *cmd)
+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\n",
- notif->status, notif->scanned_channels);
- return 0;
+ "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)));
}
-int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb,
- struct iwl_device_cmd *cmd)
+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);
+}
- return 0;
+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";
+ }
}
-int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb,
- struct iwl_device_cmd *cmd)
+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;
-
- scan_notif = (void *)pkt->data;
+ 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);
- IWL_DEBUG_SCAN(mvm,
- "%s completed, status %s, EBS status %s\n",
- mvm->scan_status == IWL_MVM_SCAN_SCHED ?
- "Scheduled scan" : "Scan",
- scan_notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
- "completed" : "aborted",
- scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ?
- "success" : "failed");
+ /* 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);
- /* only call mac80211 completion if the stop was initiated by FW */
- if (mvm->scan_status == IWL_MVM_SCAN_SCHED) {
- mvm->scan_status = IWL_MVM_SCAN_NONE;
+ 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_OS) {
- mvm->scan_status = IWL_MVM_SCAN_NONE;
+ } 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);
}
- if (scan_notif->ebs_status)
- mvm->last_ebs_successful = false;
-
- return 0;
+ 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)
return -1;
}
-static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req,
- struct iwl_ssid_ie *direct_scan,
- u32 *ssid_bitmap, bool basic_ssid)
+/* 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;
* iwl_config_sched_scan_profiles() uses the order of these ssids to
* config match list.
*/
- for (i = 0; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) {
+ for (i = 0, j = params->n_match_sets - 1;
+ j >= 0 && i < PROBE_OPTION_MAX;
+ i++, j--) {
/* skip empty SSID matchsets */
- if (!req->match_sets[i].ssid.ssid_len)
+ if (!params->match_sets[j].ssid.ssid_len)
continue;
- direct_scan[i].id = WLAN_EID_SSID;
- direct_scan[i].len = req->match_sets[i].ssid.ssid_len;
- memcpy(direct_scan[i].ssid, req->match_sets[i].ssid.ssid,
- direct_scan[i].len);
+ 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 = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) {
- index = iwl_ssid_exist(req->ssids[j].ssid,
- req->ssids[j].ssid_len,
- direct_scan);
+ 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) {
- if (!req->ssids[j].ssid_len && basic_ssid)
- continue;
- direct_scan[i].id = WLAN_EID_SSID;
- direct_scan[i].len = req->ssids[j].ssid_len;
- memcpy(direct_scan[i].ssid, req->ssids[j].ssid,
- direct_scan[i].len);
- *ssid_bitmap |= BIT(i + 1);
- i++;
+ 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 + 1);
+ *ssid_bitmap |= BIT(index);
}
}
}
-int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
- struct cfg80211_sched_scan_request *req)
+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;
int ret;
if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
- return -EIO;
+ return -EIO;
if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
return true;
}
-int iwl_mvm_scan_offload_start(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct cfg80211_sched_scan_request *req,
- struct ieee80211_scan_ies *ies)
-{
- int ret;
-
- if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
- ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
- if (ret)
- return ret;
- ret = iwl_mvm_sched_scan_umac(mvm, vif, req, ies);
- } else {
- mvm->scan_status = IWL_MVM_SCAN_SCHED;
- ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
- if (ret)
- return ret;
- ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
- }
-
- return ret;
-}
-
-static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm)
+static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
{
int ret;
struct iwl_host_cmd cmd = {
};
u32 status;
- /* Exit instantly with error when device is not ready
- * to receive scan abort command or it does not perform
- * scheduled scan currently */
- if (mvm->scan_status == IWL_MVM_SCAN_NONE)
- return -EIO;
-
ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
if (ret)
return ret;
return ret;
}
-int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify)
-{
- int ret;
- struct iwl_notification_wait wait_scan_done;
- static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, };
- bool sched = mvm->scan_status == IWL_MVM_SCAN_SCHED;
-
- lockdep_assert_held(&mvm->mutex);
-
- if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
- return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN,
- notify);
-
- if (mvm->scan_status == IWL_MVM_SCAN_NONE)
- return 0;
-
- if (iwl_mvm_is_radio_killed(mvm)) {
- ret = 0;
- goto out;
- }
-
- iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
- scan_done_notif,
- ARRAY_SIZE(scan_done_notif),
- NULL, NULL);
-
- ret = iwl_mvm_send_scan_offload_abort(mvm);
- if (ret) {
- IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n",
- sched ? "offloaded " : "", ret);
- iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
- goto out;
- }
-
- IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n",
- sched ? "offloaded " : "");
-
- ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ);
-out:
- /*
- * Clear the scan status so the next scan requests will succeed. This
- * also ensures the Rx handler doesn't do anything, as the scan was
- * stopped from above. Since the rx handler won't do anything now,
- * we have to release the scan reference here.
- */
- if (mvm->scan_status == IWL_MVM_SCAN_OS)
- iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
-
- mvm->scan_status = IWL_MVM_SCAN_NONE;
-
- if (notify) {
- if (sched)
- ieee80211_sched_scan_stopped(mvm->hw);
- else
- ieee80211_scan_completed(mvm->hw, true);
- }
-
- return ret;
-}
-
-static void iwl_mvm_unified_scan_fill_tx_cmd(struct iwl_mvm *mvm,
- struct iwl_scan_req_tx_cmd *tx_cmd,
- bool no_cck)
+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);
iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
struct ieee80211_channel **channels,
int n_channels, u32 ssid_bitmap,
- struct iwl_scan_req_unified_lmac *cmd)
+ struct iwl_scan_req_lmac *cmd)
{
struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
int i;
}
static void
-iwl_mvm_build_unified_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct ieee80211_scan_ies *ies,
- struct iwl_scan_probe_req *preq,
- const u8 *mac_addr, const u8 *mac_addr_mask)
+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 = (struct ieee80211_mgmt *)preq->buf;
+ 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
* random, only when it's restarted, but at least that helps a bit.
*/
if (mac_addr)
- get_random_mask_addr(frame->sa, mac_addr, mac_addr_mask);
+ get_random_mask_addr(frame->sa, mac_addr,
+ params->mac_addr_mask);
else
memcpy(frame->sa, vif->addr, ETH_ALEN);
*pos++ = WLAN_EID_SSID;
*pos++ = 0;
- preq->mac_header.offset = 0;
- preq->mac_header.len = cpu_to_le16(24 + 2);
+ 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);
- preq->band_data[0].offset = cpu_to_le16(pos - preq->buf);
- preq->band_data[0].len = cpu_to_le16(newpos - 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]);
- preq->band_data[1].offset = cpu_to_le16(pos - preq->buf);
- preq->band_data[1].len = cpu_to_le16(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);
- preq->common_data.offset = cpu_to_le16(pos - preq->buf);
- preq->common_data.len = cpu_to_le16(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 void
-iwl_mvm_build_generic_unified_scan_cmd(struct iwl_mvm *mvm,
- struct iwl_scan_req_unified_lmac *cmd,
- struct iwl_mvm_scan_params *params)
+static __le32 iwl_mvm_scan_priority(struct iwl_mvm *mvm,
+ enum iwl_scan_priority_ext prio)
{
- memset(cmd, 0, ksize(cmd));
- cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active;
- cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive;
- if (params->passive_fragmented)
- cmd->fragmented_dwell =
- params->dwell[IEEE80211_BAND_2GHZ].fragmented;
- cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
- cmd->max_out_time = cpu_to_le32(params->max_out_time);
- cmd->suspend_time = cpu_to_le32(params->suspend_time);
- cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
- cmd->iter_num = cpu_to_le32(1);
+ if (fw_has_api(&mvm->fw->ucode_capa,
+ IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY))
+ return cpu_to_le32(prio);
- if (iwl_mvm_rrm_scan_needed(mvm))
- cmd->scan_flags |=
- cpu_to_le32(IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED);
-}
+ if (prio <= IWL_SCAN_PRIORITY_EXT_2)
+ return cpu_to_le32(IWL_SCAN_PRIORITY_LOW);
-int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct ieee80211_scan_request *req)
-{
- struct iwl_host_cmd hcmd = {
- .id = SCAN_OFFLOAD_REQUEST_CMD,
- .len = { sizeof(struct iwl_scan_req_unified_lmac) +
- sizeof(struct iwl_scan_channel_cfg_lmac) *
- mvm->fw->ucode_capa.n_scan_channels +
- sizeof(struct iwl_scan_probe_req), },
- .data = { mvm->scan_cmd, },
- .dataflags = { IWL_HCMD_DFL_NOCOPY, },
- };
- struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd;
- struct iwl_scan_probe_req *preq;
- struct iwl_mvm_scan_params params = {};
- u32 flags;
- u32 ssid_bitmap = 0;
- int ret, i;
+ if (prio <= IWL_SCAN_PRIORITY_EXT_4)
+ return cpu_to_le32(IWL_SCAN_PRIORITY_MEDIUM);
- lockdep_assert_held(&mvm->mutex);
-
- /* we should have failed registration if scan_cmd was NULL */
- if (WARN_ON(mvm->scan_cmd == NULL))
- return -ENOMEM;
+ return cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
+}
- if (req->req.n_ssids > PROBE_OPTION_MAX ||
- req->ies.common_ie_len + req->ies.len[NL80211_BAND_2GHZ] +
- req->ies.len[NL80211_BAND_5GHZ] >
- iwl_mvm_max_scan_ie_fw_cmd_room(mvm, false) ||
- req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
- return -ENOBUFS;
+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);
+}
- mvm->scan_status = IWL_MVM_SCAN_OS;
+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)));
+}
- iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags,
- ¶ms);
+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;
- iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms);
+ /* 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);
+}
- cmd->n_channels = (u8)req->req.n_channels;
+static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
+ struct iwl_mvm_scan_params *params)
+{
+ int flags = 0;
- flags = IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
+ if (params->n_ssids == 0)
+ flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
- if (req->req.n_ssids == 1 && req->req.ssids[0].ssid_len != 0)
+ if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
- if (params.passive_fragmented)
+ if (params->type == IWL_SCAN_TYPE_FRAGMENTED)
flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
- if (req->req.n_ssids == 0)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
-
- cmd->scan_flags |= cpu_to_le32(flags);
-
- cmd->flags = iwl_mvm_scan_rxon_flags(req->req.channels[0]->band);
- cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
- MAC_FILTER_IN_BEACON);
- iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, req->req.no_cck);
- iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->req.ssids,
- req->req.n_ssids, 0);
-
- cmd->schedule[0].delay = 0;
- cmd->schedule[0].iterations = 1;
- cmd->schedule[0].full_scan_mul = 0;
- cmd->schedule[1].delay = 0;
- cmd->schedule[1].iterations = 0;
- cmd->schedule[1].full_scan_mul = 0;
-
- if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_SINGLE_SCAN_EBS &&
- mvm->last_ebs_successful) {
- 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);
- }
-
- for (i = 1; i <= req->req.n_ssids; i++)
- ssid_bitmap |= BIT(i);
-
- iwl_mvm_lmac_scan_cfg_channels(mvm, req->req.channels,
- req->req.n_channels, ssid_bitmap,
- cmd);
+ if (iwl_mvm_rrm_scan_needed(mvm))
+ flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
- preq = (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
- mvm->fw->ucode_capa.n_scan_channels);
+ if (params->pass_all)
+ flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
+ else
+ flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
- iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, preq,
- req->req.flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
- req->req.mac_addr : NULL,
- req->req.mac_addr_mask);
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+ if (mvm->scan_iter_notif_enabled)
+ flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
+#endif
- ret = iwl_mvm_send_cmd(mvm, &hcmd);
- if (!ret) {
- IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
- } 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, "Scan failed! ret %d\n", ret);
- mvm->scan_status = IWL_MVM_SCAN_NONE;
- ret = -EIO;
- }
- return ret;
+ return flags;
}
-int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct cfg80211_sched_scan_request *req,
- struct ieee80211_scan_ies *ies)
+static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+ struct iwl_mvm_scan_params *params)
{
- struct iwl_host_cmd hcmd = {
- .id = SCAN_OFFLOAD_REQUEST_CMD,
- .len = { sizeof(struct iwl_scan_req_unified_lmac) +
- sizeof(struct iwl_scan_channel_cfg_lmac) *
- mvm->fw->ucode_capa.n_scan_channels +
- sizeof(struct iwl_scan_probe_req), },
- .data = { mvm->scan_cmd, },
- .dataflags = { IWL_HCMD_DFL_NOCOPY, },
- };
- struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd;
- struct iwl_scan_probe_req *preq;
- struct iwl_mvm_scan_params params = {};
- int ret;
- u32 flags = 0, ssid_bitmap = 0;
+ 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);
- /* we should have failed registration if scan_cmd was NULL */
- if (WARN_ON(mvm->scan_cmd == NULL))
- return -ENOMEM;
-
- if (req->n_ssids > PROBE_OPTION_MAX ||
- ies->common_ie_len + ies->len[NL80211_BAND_2GHZ] +
- ies->len[NL80211_BAND_5GHZ] >
- iwl_mvm_max_scan_ie_fw_cmd_room(mvm, true) ||
- req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
- return -ENOBUFS;
-
- iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms);
-
- iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms);
-
- cmd->n_channels = (u8)req->n_channels;
-
- cmd->delay = cpu_to_le32(req->delay);
-
- if (iwl_mvm_scan_pass_all(mvm, req))
- flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
- else
- flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
+ memset(cmd, 0, ksize(cmd));
- if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
+ if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
+ return -EINVAL;
- if (params.passive_fragmented)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
+ iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
- if (req->n_ssids == 0)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
+ cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
+ cmd->iter_num = cpu_to_le32(1);
+ cmd->n_channels = (u8)params->n_channels;
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- if (mvm->scan_iter_notif_enabled)
- flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
-#endif
+ cmd->delay = cpu_to_le32(params->delay);
- cmd->scan_flags |= cpu_to_le32(flags);
+ cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params));
- cmd->flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band);
+ 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_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, false);
- iwl_scan_offload_build_ssid(req, cmd->direct_scan, &ssid_bitmap, false);
+ iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
+ iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
- cmd->schedule[0].delay = cpu_to_le16(req->interval / MSEC_PER_SEC);
- cmd->schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS;
- cmd->schedule[0].full_scan_mul = 1;
+ /* this API uses bits 1-20 instead of 0-19 */
+ ssid_bitmap <<= 1;
- cmd->schedule[1].delay = cpu_to_le16(req->interval / MSEC_PER_SEC);
- cmd->schedule[1].iterations = 0xff;
- cmd->schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER;
+ 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 (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT &&
- mvm->last_ebs_successful) {
+ 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 |
cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
}
- iwl_mvm_lmac_scan_cfg_channels(mvm, req->channels, req->n_channels,
- ssid_bitmap, cmd);
+ iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
+ params->n_channels, ssid_bitmap, cmd);
- preq = (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
- mvm->fw->ucode_capa.n_scan_channels);
+ *preq = params->preq;
- iwl_mvm_build_unified_scan_probe(mvm, vif, ies, preq,
- req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
- req->mac_addr : NULL,
- req->mac_addr_mask);
-
- ret = iwl_mvm_send_cmd(mvm, &hcmd);
- if (!ret) {
- IWL_DEBUG_SCAN(mvm,
- "Sched scan request was sent successfully\n");
- } 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);
- mvm->scan_status = IWL_MVM_SCAN_NONE;
- ret = -EIO;
- }
- return ret;
-}
-
-
-int iwl_mvm_cancel_scan(struct iwl_mvm *mvm)
-{
- if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
- return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_REG_SCAN,
- true);
-
- if (mvm->scan_status == IWL_MVM_SCAN_NONE)
- return 0;
-
- if (iwl_mvm_is_radio_killed(mvm)) {
- ieee80211_scan_completed(mvm->hw, true);
- iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
- mvm->scan_status = IWL_MVM_SCAN_NONE;
- return 0;
- }
-
- return iwl_mvm_scan_offload_stop(mvm, true);
+ return 0;
}
-/* UMAC scan API */
-
-struct iwl_umac_scan_done {
- struct iwl_mvm *mvm;
- enum iwl_umac_scan_uid_type type;
-};
-
static int rate_to_scan_rate_flag(unsigned int rate)
{
static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
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, data_size;
+ int ret, i, j = 0, cmd_size;
struct iwl_host_cmd cmd = {
- .id = SCAN_CFG_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))
if (!scan_config)
return -ENOMEM;
- data_size = cmd_size - sizeof(struct iwl_mvm_umac_cmd_hdr);
- scan_config->hdr.size = cpu_to_le16(data_size);
scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE |
SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
SCAN_CONFIG_FLAG_SET_TX_CHAINS |
return ret;
}
-static int iwl_mvm_find_scan_uid(struct iwl_mvm *mvm, u32 uid)
+static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
{
int i;
- for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++)
- if (mvm->scan_uid[i] == uid)
+ for (i = 0; i < mvm->max_scans; i++)
+ if (mvm->scan_uid_status[i] == status)
return i;
- return i;
-}
-
-static int iwl_mvm_find_free_scan_uid(struct iwl_mvm *mvm)
-{
- return iwl_mvm_find_scan_uid(mvm, 0);
+ return -ENOENT;
}
-static bool iwl_mvm_find_scan_type(struct iwl_mvm *mvm,
- enum iwl_umac_scan_uid_type type)
+static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
{
- int i;
-
- for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++)
- if (mvm->scan_uid[i] & type)
- return true;
-
- return false;
+ return params->n_scan_plans == 1 &&
+ params->scan_plans[0].iterations == 1;
}
-static int iwl_mvm_find_first_scan(struct iwl_mvm *mvm,
- enum iwl_umac_scan_uid_type type)
-{
- int i;
-
- for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++)
- if (mvm->scan_uid[i] & type)
- return i;
-
- return i;
-}
-
-static u32 iwl_generate_scan_uid(struct iwl_mvm *mvm,
- enum iwl_umac_scan_uid_type type)
-{
- u32 uid;
-
- /* make sure exactly one bit is on in scan type */
- WARN_ON(hweight8(type) != 1);
-
- /*
- * Make sure scan uids are unique. If one scan lasts long time while
- * others are completing frequently, the seq number will wrap up and
- * we may have more than one scan with the same uid.
- */
- do {
- uid = type | (mvm->scan_seq_num <<
- IWL_UMAC_SCAN_UID_SEQ_OFFSET);
- mvm->scan_seq_num++;
- } while (iwl_mvm_find_scan_uid(mvm, uid) <
- IWL_MVM_MAX_SIMULTANEOUS_SCANS);
-
- IWL_DEBUG_SCAN(mvm, "Generated scan UID %u\n", uid);
-
- return uid;
-}
-
-static void
-iwl_mvm_build_generic_umac_scan_cmd(struct iwl_mvm *mvm,
+static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
struct iwl_scan_req_umac *cmd,
struct iwl_mvm_scan_params *params)
{
- memset(cmd, 0, ksize(cmd));
- cmd->hdr.size = cpu_to_le16(iwl_mvm_scan_size(mvm) -
- sizeof(struct iwl_mvm_umac_cmd_hdr));
- cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active;
- cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive;
- if (params->passive_fragmented)
- cmd->fragmented_dwell =
- params->dwell[IEEE80211_BAND_2GHZ].fragmented;
- cmd->max_out_time = cpu_to_le32(params->max_out_time);
- cmd->suspend_time = cpu_to_le32(params->suspend_time);
- cmd->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
+ 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
}
}
-static u32 iwl_mvm_scan_umac_common_flags(struct iwl_mvm *mvm, int n_ssids,
- struct cfg80211_ssid *ssids,
- int fragmented)
+static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
+ struct iwl_mvm_scan_params *params)
{
int flags = 0;
- if (n_ssids == 0)
+ if (params->n_ssids == 0)
flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
- if (n_ssids == 1 && ssids[0].ssid_len != 0)
+ if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
- if (fragmented)
+ 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;
}
-int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct ieee80211_scan_request *req)
+static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+ struct iwl_mvm_scan_params *params,
+ int type)
{
- struct iwl_host_cmd hcmd = {
- .id = SCAN_REQ_UMAC,
- .len = { iwl_mvm_scan_size(mvm), },
- .data = { mvm->scan_cmd, },
- .dataflags = { IWL_HCMD_DFL_NOCOPY, },
- };
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;
- struct iwl_mvm_scan_params params = {};
- u32 uid, flags;
+ int uid, i;
u32 ssid_bitmap = 0;
- int ret, i, uid_idx;
lockdep_assert_held(&mvm->mutex);
- uid_idx = iwl_mvm_find_free_scan_uid(mvm);
- if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS)
- return -EBUSY;
+ if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
+ return -EINVAL;
- /* we should have failed registration if scan_cmd was NULL */
- if (WARN_ON(mvm->scan_cmd == NULL))
- return -ENOMEM;
+ uid = iwl_mvm_scan_uid_by_status(mvm, 0);
+ if (uid < 0)
+ return uid;
- if (WARN_ON(req->req.n_ssids > PROBE_OPTION_MAX ||
- req->ies.common_ie_len +
- req->ies.len[NL80211_BAND_2GHZ] +
- req->ies.len[NL80211_BAND_5GHZ] + 24 + 2 >
- SCAN_OFFLOAD_PROBE_REQ_SIZE || req->req.n_channels >
- mvm->fw->ucode_capa.n_scan_channels))
- return -ENOBUFS;
+ memset(cmd, 0, ksize(cmd));
- iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags,
- ¶ms);
+ iwl_mvm_scan_umac_dwell(mvm, cmd, params);
- iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, ¶ms);
+ mvm->scan_uid_status[uid] = type;
- uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_REG_SCAN);
- mvm->scan_uid[uid_idx] = uid;
cmd->uid = cpu_to_le32(uid);
+ cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params));
- cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
-
- flags = iwl_mvm_scan_umac_common_flags(mvm, req->req.n_ssids,
- req->req.ssids,
- params.passive_fragmented);
-
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
-
- cmd->general_flags = cpu_to_le32(flags);
+ if (type == IWL_MVM_SCAN_SCHED)
+ cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
- if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_SINGLE_SCAN_EBS &&
- mvm->last_ebs_successful)
+ 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 = req->req.n_channels;
+ cmd->n_channels = params->n_channels;
- for (i = 0; i < req->req.n_ssids; i++)
- ssid_bitmap |= BIT(i);
+ iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap);
- iwl_mvm_umac_scan_cfg_channels(mvm, req->req.channels,
- req->req.n_channels, ssid_bitmap, cmd);
+ iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
+ params->n_channels, ssid_bitmap, cmd);
- sec_part->schedule[0].iter_count = 1;
- sec_part->delay = 0;
+ for (i = 0; i < params->n_scan_plans; i++) {
+ struct cfg80211_sched_scan_plan *scan_plan =
+ ¶ms->scan_plans[i];
- iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, &sec_part->preq,
- req->req.flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
- req->req.mac_addr : NULL,
- req->req.mac_addr_mask);
+ sec_part->schedule[i].iter_count = scan_plan->iterations;
+ sec_part->schedule[i].interval =
+ cpu_to_le16(scan_plan->interval);
+ }
- iwl_mvm_scan_fill_ssids(sec_part->direct_scan, req->req.ssids,
- req->req.n_ssids, 0);
+ /*
+ * 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;
- ret = iwl_mvm_send_cmd(mvm, &hcmd);
- if (!ret) {
- IWL_DEBUG_SCAN(mvm,
- "Scan request was sent successfully\n");
- } 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, "Scan failed! ret %d\n", ret);
- }
- return ret;
+ 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);
}
-int iwl_mvm_sched_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct cfg80211_sched_scan_request *req,
- struct ieee80211_scan_ies *ies)
+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 = {
- .id = SCAN_REQ_UMAC,
.len = { iwl_mvm_scan_size(mvm), },
.data = { mvm->scan_cmd, },
.dataflags = { IWL_HCMD_DFL_NOCOPY, },
};
- 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;
struct iwl_mvm_scan_params params = {};
- u32 uid, flags;
- u32 ssid_bitmap = 0;
- int ret, uid_idx;
+ int ret;
+ struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
lockdep_assert_held(&mvm->mutex);
- uid_idx = iwl_mvm_find_free_scan_uid(mvm);
- if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS)
+ 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 == NULL))
+ if (WARN_ON(!mvm->scan_cmd))
return -ENOMEM;
- if (WARN_ON(req->n_ssids > PROBE_OPTION_MAX ||
- ies->common_ie_len + ies->len[NL80211_BAND_2GHZ] +
- ies->len[NL80211_BAND_5GHZ] + 24 + 2 >
- SCAN_OFFLOAD_PROBE_REQ_SIZE || req->n_channels >
- mvm->fw->ucode_capa.n_scan_channels))
+ if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
return -ENOBUFS;
- iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags,
- ¶ms);
-
- iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, ¶ms);
-
- cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
-
- uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN);
- mvm->scan_uid[uid_idx] = uid;
- cmd->uid = cpu_to_le32(uid);
+ 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);
+ }
- cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_LOW);
+ if (ret)
+ return ret;
- flags = iwl_mvm_scan_umac_common_flags(mvm, req->n_ssids, req->ssids,
- params.passive_fragmented);
+ 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;
+ }
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
+ 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);
- if (iwl_mvm_scan_pass_all(mvm, req))
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
- else
- flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
+ return 0;
+}
- cmd->general_flags = cpu_to_le32(flags);
+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;
- if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT &&
- mvm->last_ebs_successful)
- cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
- IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
- IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
+ lockdep_assert_held(&mvm->mutex);
- cmd->n_channels = req->n_channels;
+ 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;
+ }
- iwl_scan_offload_build_ssid(req, sec_part->direct_scan, &ssid_bitmap,
- false);
+ /* we don't support "match all" in the firmware */
+ if (!req->n_match_sets)
+ return -EOPNOTSUPP;
- /* This API uses bits 0-19 instead of 1-20. */
- ssid_bitmap = ssid_bitmap >> 1;
+ ret = iwl_mvm_check_running_scans(mvm, type);
+ if (ret)
+ return ret;
- iwl_mvm_umac_scan_cfg_channels(mvm, req->channels, req->n_channels,
- ssid_bitmap, cmd);
+ /* we should have failed registration if scan_cmd was NULL */
+ if (WARN_ON(!mvm->scan_cmd))
+ return -ENOMEM;
- sec_part->schedule[0].interval =
- cpu_to_le16(req->interval / MSEC_PER_SEC);
- sec_part->schedule[0].iter_count = 0xff;
+ 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");
- sec_part->delay = cpu_to_le16(U16_MAX);
+ params.delay = U16_MAX;
} else {
- sec_part->delay = cpu_to_le16(req->delay);
+ params.delay = req->delay;
}
- iwl_mvm_build_unified_scan_probe(mvm, vif, ies, &sec_part->preq,
- req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
- req->mac_addr : NULL,
- req->mac_addr_mask);
+ 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
+ /* 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;
}
-int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb,
- struct iwl_device_cmd *cmd)
+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 sched = !!(uid & IWL_UMAC_SCAN_UID_SCHED_SCAN);
- int uid_idx = iwl_mvm_find_scan_uid(mvm, uid);
+ bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
- /*
- * Scan uid may be set to zero in case of scan abort request from above.
- */
- if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS)
- return 0;
+ 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 %s, status %s, EBS status %s\n",
- uid, sched ? "sched" : "regular",
+ "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",
- notif->ebs_status == IWL_SCAN_EBS_SUCCESS ?
- "success" : "failed");
+ 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)
+ if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
+ notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
mvm->last_ebs_successful = false;
- mvm->scan_uid[uid_idx] = 0;
-
- if (!sched) {
- ieee80211_scan_completed(mvm->hw,
- notif->status ==
- IWL_SCAN_OFFLOAD_ABORTED);
- iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
- } else if (!iwl_mvm_find_scan_type(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN)) {
- ieee80211_sched_scan_stopped(mvm->hw);
- } else {
- IWL_DEBUG_SCAN(mvm, "Another sched scan is running\n");
- }
-
- return 0;
+ mvm->scan_uid_status[uid] = 0;
}
-static bool iwl_scan_umac_done_check(struct iwl_notif_wait_data *notif_wait,
- struct iwl_rx_packet *pkt, void *data)
+void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
+ struct iwl_rx_cmd_buffer *rxb)
{
- struct iwl_umac_scan_done *scan_done = data;
- struct iwl_umac_scan_complete *notif = (void *)pkt->data;
- u32 uid = __le32_to_cpu(notif->uid);
- int uid_idx = iwl_mvm_find_scan_uid(scan_done->mvm, uid);
-
- if (WARN_ON(pkt->hdr.cmd != SCAN_COMPLETE_UMAC))
- return false;
-
- if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS)
- return false;
-
- /*
- * Clear scan uid of scans that was aborted from above and completed
- * in FW so the RX handler does nothing. Set last_ebs_successful here if
- * needed.
- */
- scan_done->mvm->scan_uid[uid_idx] = 0;
-
- if (notif->ebs_status)
- scan_done->mvm->last_ebs_successful = false;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
+ u8 buf[256];
- return !iwl_mvm_find_scan_type(scan_done->mvm, scan_done->type);
+ 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_umac_scan_abort_one(struct iwl_mvm *mvm, u32 uid)
+static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
{
- struct iwl_umac_scan_abort cmd = {
- .hdr.size = cpu_to_le16(sizeof(struct iwl_umac_scan_abort) -
- sizeof(struct iwl_mvm_umac_cmd_hdr)),
- .uid = cpu_to_le32(uid),
- };
+ 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);
- return iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_UMAC, 0, sizeof(cmd), &cmd);
+ 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_umac_scan_stop(struct iwl_mvm *mvm,
- enum iwl_umac_scan_uid_type type, bool notify)
+static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
{
struct iwl_notification_wait wait_scan_done;
- static const u8 scan_done_notif[] = { SCAN_COMPLETE_UMAC, };
- struct iwl_umac_scan_done scan_done = {
- .mvm = mvm,
- .type = type,
- };
- int i, ret = -EIO;
+ 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),
- iwl_scan_umac_done_check, &scan_done);
+ NULL, NULL);
IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
- for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) {
- if (mvm->scan_uid[i] & type) {
- int err;
-
- if (iwl_mvm_is_radio_killed(mvm) &&
- (type & IWL_UMAC_SCAN_UID_REG_SCAN)) {
- ieee80211_scan_completed(mvm->hw, true);
- iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
- break;
- }
-
- err = iwl_umac_scan_abort_one(mvm, mvm->scan_uid[i]);
- if (!err)
- ret = 0;
- }
- }
+ 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\n");
+ 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);
- if (ret)
- return ret;
-
- if (notify) {
- if (type & IWL_UMAC_SCAN_UID_SCHED_SCAN)
- ieee80211_sched_scan_stopped(mvm->hw);
- if (type & IWL_UMAC_SCAN_UID_REG_SCAN) {
- ieee80211_scan_completed(mvm->hw, true);
- iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
- }
- }
return ret;
}
int iwl_mvm_scan_size(struct iwl_mvm *mvm)
{
- if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
+ 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_unified_lmac) +
+ 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);
*/
void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
{
- if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
- u32 uid, i;
+ if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
+ int uid, i;
- uid = iwl_mvm_find_first_scan(mvm, IWL_UMAC_SCAN_UID_REG_SCAN);
- if (uid < IWL_MVM_MAX_SIMULTANEOUS_SCANS) {
+ uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
+ if (uid >= 0) {
ieee80211_scan_completed(mvm->hw, true);
- mvm->scan_uid[uid] = 0;
+ mvm->scan_uid_status[uid] = 0;
}
- uid = iwl_mvm_find_first_scan(mvm,
- IWL_UMAC_SCAN_UID_SCHED_SCAN);
- if (uid < IWL_MVM_MAX_SIMULTANEOUS_SCANS && !mvm->restart_fw) {
+ 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[uid] = 0;
+ 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 < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) {
- if (WARN_ONCE(mvm->scan_uid[i],
- "UMAC scan UID %d was not cleaned\n",
- mvm->scan_uid[i]))
- mvm->scan_uid[i] = 0;
+ 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 {
- switch (mvm->scan_status) {
- case IWL_MVM_SCAN_NONE:
- break;
- case IWL_MVM_SCAN_OS:
+ if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
ieee80211_scan_completed(mvm->hw, true);
- break;
- case IWL_MVM_SCAN_SCHED:
- /*
- * Sched scan will be restarted by mac80211 in
- * restart_hw, so do not report if FW is about to be
- * restarted.
- */
- if (!mvm->restart_fw)
- ieee80211_sched_scan_stopped(mvm->hw);
- break;
- }
+
+ /* 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;
+}
Code Review / kvmfornfv.git / blobdiff