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iwlwifi: mvm: support sched scan if supported by the fw

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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>
This commit is contained in:
David Spinadel 2013-08-28 09:29:43 +03:00 committed by Johannes Berg
parent 20f1a5deb6
commit 35a000b7c1
7 changed files with 538 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/wireless/iwlwifi/iwl-fw.h
View File

@ -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 @@ enum iwl_ucode_tlv_flag {
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),
};

34
drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
View File

@ -356,6 +356,7 @@ struct iwl_scan_complete_notif {
/* 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 @@ struct iwl_scan_complete_notif {
#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 @@ struct iwl_scan_offload_cfg {
* 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 @@ enum iwl_scan_offload_band_selection {
* @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 @@ struct iwl_scan_offload_profile {
u8 auth_alg;
u8 network_type;
u8 band_selection;
u8 reserved[3];
u8 client_bitmap;
u8 reserved[2];
} __packed;
/**
@ -491,13 +501,18 @@ struct iwl_scan_offload_profile {
* @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 @@ struct iwl_scan_offload_complete {
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

1
drivers/net/wireless/iwlwifi/mvm/fw-api.h
View File

@ -132,6 +132,7 @@ enum {
SCAN_OFFLOAD_COMPLETE = 0x6D,
SCAN_OFFLOAD_UPDATE_PROFILES_CMD = 0x6E,
SCAN_OFFLOAD_CONFIG_CMD = 0x6f,
MATCH_FOUND_NOTIFICATION = 0xd9,
/* Phy */
PHY_CONFIGURATION_CMD = 0x6a,

58
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View File

@ -239,6 +239,15 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
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 @@ static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
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 @@ struct ieee80211_ops iwl_mvm_hw_ops = {
.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,

18
drivers/net/wireless/iwlwifi/mvm/mvm.h
View File

@ -339,6 +339,7 @@ iwl_mvm_vif_from_mac80211(struct ieee80211_vif *vif)
enum iwl_scan_status {
IWL_MVM_SCAN_NONE,
IWL_MVM_SCAN_OS,
IWL_MVM_SCAN_SCHED,
};
/**
@ -696,6 +697,23 @@ int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
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);

8
drivers/net/wireless/iwlwifi/mvm/ops.c
View File

@ -224,6 +224,10 @@ static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
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 @@ static const char *iwl_mvm_cmd_strings[REPLY_MAX] = {
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 @@ static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
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)

418
drivers/net/wireless/iwlwifi/mvm/scan.c
View File

@ -391,6 +391,21 @@ int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
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 @@ void iwl_mvm_cancel_scan(struct iwl_mvm *mvm)
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");
}