iwlwifi: mvm: support sched scan if supported by the fw
Add support for scheduled scan according to firmware support.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-fw.h b/drivers/net/wireless/iwlwifi/iwl-fw.h
index d2f0381..0d609ce 100644
--- a/drivers/net/wireless/iwlwifi/iwl-fw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-fw.h
@@ -75,6 +75,8 @@
* @IWL_UCODE_TLV_FLAGS_P2P: This uCode image supports P2P.
* @IWL_UCODE_TLV_FLAGS_DW_BC_TABLE: The SCD byte count table is in DWORDS
* @IWL_UCODE_TLV_FLAGS_UAPSD: This uCode image supports uAPSD
+ * @IWL_UCODE_TLV_FLAGS_SHORT_BL: 16 entries of black list instead of 64 in scan
+ * offload profile config command.
* @IWL_UCODE_TLV_FLAGS_RX_ENERGY_API: supports rx signal strength api
* @IWL_UCODE_TLV_FLAGS_TIME_EVENT_API_V2: using the new time event API.
* @IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS: D3 image supports up to six
@@ -82,6 +84,7 @@
* @IWL_UCODE_TLV_FLAGS_BF_UPDATED: new beacon filtering API
* @IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID: not sending a probe with the SSID element
* from the probe request template.
+ * @IWL_UCODE_TLV_FLAGS_SCHED_SCAN: this uCode image supports scheduled scan.
* @IWL_UCODE_TLV_FLAGS_STA_KEY_CMD: new ADD_STA and ADD_STA_KEY command API
*/
enum iwl_ucode_tlv_flag {
@@ -91,11 +94,13 @@
IWL_UCODE_TLV_FLAGS_P2P = BIT(3),
IWL_UCODE_TLV_FLAGS_DW_BC_TABLE = BIT(4),
IWL_UCODE_TLV_FLAGS_UAPSD = BIT(6),
+ IWL_UCODE_TLV_FLAGS_SHORT_BL = BIT(7),
IWL_UCODE_TLV_FLAGS_RX_ENERGY_API = BIT(8),
IWL_UCODE_TLV_FLAGS_TIME_EVENT_API_V2 = BIT(9),
IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS = BIT(10),
IWL_UCODE_TLV_FLAGS_BF_UPDATED = BIT(11),
IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID = BIT(12),
+ IWL_UCODE_TLV_FLAGS_SCHED_SCAN = BIT(17),
IWL_UCODE_TLV_FLAGS_STA_KEY_CMD = BIT(19),
};
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h b/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
index 83cb9b9..c3782b4 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
+++ b/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
@@ -356,6 +356,7 @@
/* scan offload */
#define IWL_MAX_SCAN_CHANNELS 40
#define IWL_SCAN_MAX_BLACKLIST_LEN 64
+#define IWL_SCAN_SHORT_BLACKLIST_LEN 16
#define IWL_SCAN_MAX_PROFILES 11
#define SCAN_OFFLOAD_PROBE_REQ_SIZE 512
@@ -368,6 +369,12 @@
#define IWL_FULL_SCAN_MULTIPLIER 5
#define IWL_FAST_SCHED_SCAN_ITERATIONS 3
+enum scan_framework_client {
+ SCAN_CLIENT_SCHED_SCAN = BIT(0),
+ SCAN_CLIENT_NETDETECT = BIT(1),
+ SCAN_CLIENT_ASSET_TRACKING = BIT(2),
+};
+
/**
* struct iwl_scan_offload_cmd - SCAN_REQUEST_FIXED_PART_API_S_VER_6
* @scan_flags: see enum iwl_scan_flags
@@ -449,11 +456,12 @@
* iwl_scan_offload_blacklist - SCAN_OFFLOAD_BLACKLIST_S
* @ssid: MAC address to filter out
* @reported_rssi: AP rssi reported to the host
+ * @client_bitmap: clients ignore this entry - enum scan_framework_client
*/
struct iwl_scan_offload_blacklist {
u8 ssid[ETH_ALEN];
u8 reported_rssi;
- u8 reserved;
+ u8 client_bitmap;
} __packed;
enum iwl_scan_offload_network_type {
@@ -475,6 +483,7 @@
* @aut_alg: authentication olgorithm to match - bitmap
* @network_type: enum iwl_scan_offload_network_type
* @band_selection: enum iwl_scan_offload_band_selection
+ * @client_bitmap: clients waiting for match - enum scan_framework_client
*/
struct iwl_scan_offload_profile {
u8 ssid_index;
@@ -482,7 +491,8 @@
u8 auth_alg;
u8 network_type;
u8 band_selection;
- u8 reserved[3];
+ u8 client_bitmap;
+ u8 reserved[2];
} __packed;
/**
@@ -491,13 +501,18 @@
* @profiles: profiles to search for match
* @blacklist_len: length of blacklist
* @num_profiles: num of profiles in the list
+ * @match_notify: clients waiting for match found notification
+ * @pass_match: clients waiting for the results
+ * @active_clients: active clients bitmap - enum scan_framework_client
*/
struct iwl_scan_offload_profile_cfg {
- struct iwl_scan_offload_blacklist blacklist[IWL_SCAN_MAX_BLACKLIST_LEN];
struct iwl_scan_offload_profile profiles[IWL_SCAN_MAX_PROFILES];
u8 blacklist_len;
u8 num_profiles;
- u8 reserved[2];
+ u8 match_notify;
+ u8 pass_match;
+ u8 active_clients;
+ u8 reserved[3];
} __packed;
/**
@@ -560,4 +575,15 @@
u8 reserved;
} __packed;
+/**
+ * iwl_sched_scan_results - SCAN_OFFLOAD_MATCH_FOUND_NTF_API_S_VER_1
+ * @ssid_bitmap: SSIDs indexes found in this iteration
+ * @client_bitmap: clients that are active and wait for this notification
+ */
+struct iwl_sched_scan_results {
+ __le16 ssid_bitmap;
+ u8 client_bitmap;
+ u8 reserved;
+};
+
#endif
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api.h b/drivers/net/wireless/iwlwifi/mvm/fw-api.h
index 3c833ac..c28af8a 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw-api.h
+++ b/drivers/net/wireless/iwlwifi/mvm/fw-api.h
@@ -132,6 +132,7 @@
SCAN_OFFLOAD_COMPLETE = 0x6D,
SCAN_OFFLOAD_UPDATE_PROFILES_CMD = 0x6E,
SCAN_OFFLOAD_CONFIG_CMD = 0x6f,
+ MATCH_FOUND_NOTIFICATION = 0xd9,
/* Phy */
PHY_CONFIGURATION_CMD = 0x6a,
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index 0340299..8c61915 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -239,6 +239,15 @@
else
hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
+ if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SCHED_SCAN) {
+ hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
+ hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
+ hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
+ /* we create the 802.11 header and zero length SSID IE. */
+ hw->wiphy->max_sched_scan_ie_len =
+ SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
+ }
+
hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
NL80211_FEATURE_P2P_GO_OPPPS;
@@ -1202,6 +1211,53 @@
mutex_unlock(&mvm->mutex);
}
+static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct cfg80211_sched_scan_request *req,
+ struct ieee80211_sched_scan_ies *ies)
+{
+ struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+ int ret;
+
+ mutex_lock(&mvm->mutex);
+
+ if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
+ IWL_DEBUG_SCAN(mvm,
+ "SCHED SCAN request during internal scan - abort\n");
+ ret = -EBUSY;
+ goto out;
+ }
+
+ mvm->scan_status = IWL_MVM_SCAN_SCHED;
+
+ ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
+ if (ret)
+ goto err;
+
+ ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
+ if (ret)
+ goto err;
+
+ ret = iwl_mvm_sched_scan_start(mvm, req);
+ if (!ret)
+ goto out;
+err:
+ mvm->scan_status = IWL_MVM_SCAN_NONE;
+out:
+ mutex_unlock(&mvm->mutex);
+ return ret;
+}
+
+static void iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+
+ mutex_lock(&mvm->mutex);
+ iwl_mvm_sched_scan_stop(mvm);
+ mutex_unlock(&mvm->mutex);
+}
+
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
@@ -1671,6 +1727,8 @@
.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
.conf_tx = iwl_mvm_mac_conf_tx,
.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
+ .sched_scan_start = iwl_mvm_mac_sched_scan_start,
+ .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
.set_key = iwl_mvm_mac_set_key,
.update_tkip_key = iwl_mvm_mac_update_tkip_key,
.remain_on_channel = iwl_mvm_roc,
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
index d7b0aee..a56c1b8 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -339,6 +339,7 @@
enum iwl_scan_status {
IWL_MVM_SCAN_NONE,
IWL_MVM_SCAN_OS,
+ IWL_MVM_SCAN_SCHED,
};
/**
@@ -696,6 +697,23 @@
struct iwl_device_cmd *cmd);
void iwl_mvm_cancel_scan(struct iwl_mvm *mvm);
+/* Scheduled scan */
+int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm,
+ struct iwl_rx_cmd_buffer *rxb,
+ struct iwl_device_cmd *cmd);
+int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct cfg80211_sched_scan_request *req,
+ struct ieee80211_sched_scan_ies *ies);
+int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
+ struct cfg80211_sched_scan_request *req);
+int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
+ struct cfg80211_sched_scan_request *req);
+void iwl_mvm_sched_scan_stop(struct iwl_mvm *mvm);
+int iwl_mvm_rx_sched_scan_results(struct iwl_mvm *mvm,
+ struct iwl_rx_cmd_buffer *rxb,
+ struct iwl_device_cmd *cmd);
+
/* MVM debugfs */
#ifdef CONFIG_IWLWIFI_DEBUGFS
int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir);
diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c
index 8cd5f32..a9ed457 100644
--- a/drivers/net/wireless/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/iwlwifi/mvm/ops.c
@@ -224,6 +224,10 @@
RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false),
+ RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
+ iwl_mvm_rx_scan_offload_complete_notif, false),
+ RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_sched_scan_results,
+ false),
RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
@@ -266,6 +270,7 @@
CMD(REMOVE_STA),
CMD(LQ_CMD),
CMD(SCAN_OFFLOAD_CONFIG_CMD),
+ CMD(MATCH_FOUND_NOTIFICATION),
CMD(SCAN_OFFLOAD_REQUEST_CMD),
CMD(SCAN_OFFLOAD_ABORT_CMD),
CMD(SCAN_OFFLOAD_COMPLETE),
@@ -717,6 +722,9 @@
case IWL_MVM_SCAN_OS:
ieee80211_scan_completed(mvm->hw, true);
break;
+ case IWL_MVM_SCAN_SCHED:
+ ieee80211_sched_scan_stopped(mvm->hw);
+ break;
}
if (mvm->restart_fw > 0)
diff --git a/drivers/net/wireless/iwlwifi/mvm/scan.c b/drivers/net/wireless/iwlwifi/mvm/scan.c
index 0dc626f..778dcd9 100644
--- a/drivers/net/wireless/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/iwlwifi/mvm/scan.c
@@ -391,6 +391,21 @@
return 0;
}
+int iwl_mvm_rx_sched_scan_results(struct iwl_mvm *mvm,
+ struct iwl_rx_cmd_buffer *rxb,
+ struct iwl_device_cmd *cmd)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_sched_scan_results *notif = (void *)pkt->data;
+
+ if (notif->client_bitmap & SCAN_CLIENT_SCHED_SCAN) {
+ IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
+ ieee80211_sched_scan_results(mvm->hw);
+ }
+
+ return 0;
+}
+
static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{
@@ -451,3 +466,406 @@
out_remove_notif:
iwl_remove_notification(&mvm->notif_wait, &wait_scan_abort);
}
+
+int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm,
+ struct iwl_rx_cmd_buffer *rxb,
+ struct iwl_device_cmd *cmd)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_scan_offload_complete *scan_notif = (void *)pkt->data;
+
+ IWL_DEBUG_SCAN(mvm, "Scheduled scan completed, status %s\n",
+ scan_notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
+ "completed" : "aborted");
+
+ mvm->scan_status = IWL_MVM_SCAN_NONE;
+ ieee80211_sched_scan_stopped(mvm->hw);
+
+ return 0;
+}
+
+static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sched_scan_ies *ies,
+ enum ieee80211_band band,
+ struct iwl_tx_cmd *cmd,
+ u8 *data)
+{
+ u16 cmd_len;
+
+ cmd->tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL);
+ cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
+ cmd->sta_id = mvm->aux_sta.sta_id;
+
+ cmd->rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, band, false);
+
+ cmd_len = iwl_mvm_fill_probe_req((struct ieee80211_mgmt *)data,
+ vif->addr,
+ 1, NULL, 0,
+ ies->ie[band], ies->len[band],
+ SCAN_OFFLOAD_PROBE_REQ_SIZE);
+ cmd->len = cpu_to_le16(cmd_len);
+}
+
+static void iwl_build_scan_cmd(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct cfg80211_sched_scan_request *req,
+ struct iwl_scan_offload_cmd *scan)
+{
+ scan->channel_count =
+ mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels +
+ mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
+ scan->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
+ scan->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
+ scan->good_CRC_th = IWL_GOOD_CRC_TH_DEFAULT;
+ scan->rx_chain = iwl_mvm_scan_rx_chain(mvm);
+ scan->max_out_time = cpu_to_le32(200 * 1024);
+ scan->suspend_time = iwl_mvm_scan_suspend_time(vif);
+ scan->filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
+ MAC_FILTER_IN_BEACON);
+ scan->scan_type = cpu_to_le32(SCAN_TYPE_BACKGROUND);
+ scan->rep_count = cpu_to_le32(1);
+}
+
+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;
+}
+
+static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req,
+ struct iwl_scan_offload_cmd *scan,
+ 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; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) {
+ scan->direct_scan[i].id = WLAN_EID_SSID;
+ scan->direct_scan[i].len = req->match_sets[i].ssid.ssid_len;
+ memcpy(scan->direct_scan[i].ssid, req->match_sets[i].ssid.ssid,
+ scan->direct_scan[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,
+ scan->direct_scan);
+ if (index < 0) {
+ if (!req->ssids[j].ssid_len)
+ continue;
+ scan->direct_scan[i].id = WLAN_EID_SSID;
+ scan->direct_scan[i].len = req->ssids[j].ssid_len;
+ memcpy(scan->direct_scan[i].ssid, req->ssids[j].ssid,
+ scan->direct_scan[i].len);
+ *ssid_bitmap |= BIT(i + 1);
+ i++;
+ } else {
+ *ssid_bitmap |= BIT(index + 1);
+ }
+ }
+}
+
+static void iwl_build_channel_cfg(struct iwl_mvm *mvm,
+ struct cfg80211_sched_scan_request *req,
+ struct iwl_scan_channel_cfg *channels,
+ enum ieee80211_band band,
+ int *head, int *tail,
+ u32 ssid_bitmap)
+{
+ struct ieee80211_supported_band *s_band;
+ int n_probes = req->n_ssids;
+ int n_channels = req->n_channels;
+ u8 active_dwell, passive_dwell;
+ int i, j, index = 0;
+ bool partial;
+
+ /*
+ * We have to configure all supported channels, even if we don't want to
+ * scan on them, but we have to send channels in the order that we want
+ * to scan. So add requested channels to head of the list and others to
+ * the end.
+ */
+ active_dwell = iwl_mvm_get_active_dwell(band, n_probes);
+ passive_dwell = iwl_mvm_get_passive_dwell(band);
+ s_band = &mvm->nvm_data->bands[band];
+
+ for (i = 0; i < s_band->n_channels && *head <= *tail; i++) {
+ partial = false;
+ for (j = 0; j < n_channels; j++)
+ if (s_band->channels[i].center_freq ==
+ req->channels[j]->center_freq) {
+ index = *head;
+ (*head)++;
+ /*
+ * Channels that came with the request will be
+ * in partial scan .
+ */
+ partial = true;
+ break;
+ }
+ if (!partial) {
+ index = *tail;
+ (*tail)--;
+ }
+ channels->channel_number[index] =
+ cpu_to_le16(ieee80211_frequency_to_channel(
+ s_band->channels[i].center_freq));
+ channels->dwell_time[index][0] = active_dwell;
+ channels->dwell_time[index][1] = passive_dwell;
+
+ channels->iter_count[index] = cpu_to_le16(1);
+ channels->iter_interval[index] = 0;
+
+ if (!(s_band->channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
+ channels->type[index] |=
+ cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE);
+
+ channels->type[index] |=
+ cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL);
+ if (partial)
+ channels->type[index] |=
+ cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL);
+
+ if (s_band->channels[i].flags & IEEE80211_CHAN_NO_HT40)
+ channels->type[index] |=
+ cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW);
+
+ /* scan for all SSIDs from req->ssids */
+ channels->type[index] |= cpu_to_le32(ssid_bitmap);
+ }
+}
+
+int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct cfg80211_sched_scan_request *req,
+ struct ieee80211_sched_scan_ies *ies)
+{
+ int supported_bands = 0;
+ int band_2ghz = mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels;
+ int band_5ghz = mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
+ int head = 0;
+ int tail = band_2ghz + band_5ghz;
+ u32 ssid_bitmap;
+ int cmd_len;
+ int ret;
+
+ struct iwl_scan_offload_cfg *scan_cfg;
+ struct iwl_host_cmd cmd = {
+ .id = SCAN_OFFLOAD_CONFIG_CMD,
+ .flags = CMD_SYNC,
+ };
+
+ lockdep_assert_held(&mvm->mutex);
+
+ if (band_2ghz)
+ supported_bands++;
+ if (band_5ghz)
+ supported_bands++;
+
+ cmd_len = sizeof(struct iwl_scan_offload_cfg) +
+ supported_bands * SCAN_OFFLOAD_PROBE_REQ_SIZE;
+
+ scan_cfg = kzalloc(cmd_len, GFP_KERNEL);
+ if (!scan_cfg)
+ return -ENOMEM;
+
+ iwl_build_scan_cmd(mvm, vif, req, &scan_cfg->scan_cmd);
+ scan_cfg->scan_cmd.len = cpu_to_le16(cmd_len);
+
+ iwl_scan_offload_build_ssid(req, &scan_cfg->scan_cmd, &ssid_bitmap);
+ /* build tx frames for supported bands */
+ if (band_2ghz) {
+ iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
+ IEEE80211_BAND_2GHZ,
+ &scan_cfg->scan_cmd.tx_cmd[0],
+ scan_cfg->data);
+ iwl_build_channel_cfg(mvm, req, &scan_cfg->channel_cfg,
+ IEEE80211_BAND_2GHZ, &head, &tail,
+ ssid_bitmap);
+ }
+ if (band_5ghz) {
+ iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
+ IEEE80211_BAND_5GHZ,
+ &scan_cfg->scan_cmd.tx_cmd[1],
+ scan_cfg->data +
+ SCAN_OFFLOAD_PROBE_REQ_SIZE);
+ iwl_build_channel_cfg(mvm, req, &scan_cfg->channel_cfg,
+ IEEE80211_BAND_5GHZ, &head, &tail,
+ ssid_bitmap);
+ }
+
+ cmd.data[0] = scan_cfg;
+ cmd.len[0] = cmd_len;
+ cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
+
+ IWL_DEBUG_SCAN(mvm, "Sending scheduled scan config\n");
+
+ ret = iwl_mvm_send_cmd(mvm, &cmd);
+ kfree(scan_cfg);
+ return ret;
+}
+
+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,
+ .flags = CMD_SYNC,
+ .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;
+
+ 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;
+}
+
+int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
+ struct cfg80211_sched_scan_request *req)
+{
+ struct iwl_scan_offload_req scan_req = {
+ .watchdog = IWL_SCHED_SCAN_WATCHDOG,
+
+ .schedule_line[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS,
+ .schedule_line[0].delay = req->interval / 1000,
+ .schedule_line[0].full_scan_mul = 1,
+
+ .schedule_line[1].iterations = 0xff,
+ .schedule_line[1].delay = req->interval / 1000,
+ .schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER,
+ };
+
+ if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
+ IWL_DEBUG_SCAN(mvm,
+ "Sending scheduled scan with filtering, filter len %d\n",
+ req->n_match_sets);
+ scan_req.flags |=
+ cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_FILTER_SSID);
+ } else {
+ IWL_DEBUG_SCAN(mvm,
+ "Sending Scheduled scan without filtering\n");
+ }
+
+ return iwl_mvm_send_cmd_pdu(mvm, SCAN_OFFLOAD_REQUEST_CMD, CMD_SYNC,
+ sizeof(scan_req), &scan_req);
+}
+
+static int iwl_mvm_send_sched_scan_abort(struct iwl_mvm *mvm)
+{
+ int ret;
+ struct iwl_host_cmd cmd = {
+ .id = SCAN_OFFLOAD_ABORT_CMD,
+ .flags = CMD_SYNC,
+ };
+ 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_SCHED)
+ return -EIO;
+
+ 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 = -EIO;
+ }
+
+ return ret;
+}
+
+void iwl_mvm_sched_scan_stop(struct iwl_mvm *mvm)
+{
+ int ret;
+
+ lockdep_assert_held(&mvm->mutex);
+
+ if (mvm->scan_status != IWL_MVM_SCAN_SCHED) {
+ IWL_DEBUG_SCAN(mvm, "No offloaded scan to stop\n");
+ return;
+ }
+
+ ret = iwl_mvm_send_sched_scan_abort(mvm);
+ if (ret)
+ IWL_DEBUG_SCAN(mvm, "Send stop offload scan failed %d\n", ret);
+ else
+ IWL_DEBUG_SCAN(mvm, "Successfully sent stop offload scan\n");
+}