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path: root/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
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Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/scan.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/scan.c96
1 files changed, 67 insertions, 29 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index 8e0df31f1b3e..3ce9150213a7 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -48,6 +48,8 @@
/* Number of iterations on the channel for mei filtered scan */
#define IWL_MEI_SCAN_NUM_ITER 5U
+#define WFA_TPC_IE_LEN 9
+
struct iwl_mvm_scan_timing_params {
u32 suspend_time;
u32 max_out_time;
@@ -303,8 +305,8 @@ static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
- /* we create the 802.11 header and SSID element */
- max_probe_len -= 24 + 2;
+ /* we create the 802.11 header SSID element and WFA TPC element */
+ max_probe_len -= 24 + 2 + WFA_TPC_IE_LEN;
/* DS parameter set element is added on 2.4GHZ band if required */
if (iwl_mvm_rrm_scan_needed(mvm))
@@ -731,8 +733,6 @@ static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
return newpos;
}
-#define WFA_TPC_IE_LEN 9
-
static void iwl_mvm_add_tpc_report_ie(u8 *pos)
{
pos[0] = WLAN_EID_VENDOR_SPECIFIC;
@@ -837,8 +837,8 @@ static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
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] <=
+ ies->len[NL80211_BAND_2GHZ] + ies->len[NL80211_BAND_5GHZ] +
+ ies->len[NL80211_BAND_6GHZ] <=
iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
}
@@ -1594,7 +1594,7 @@ iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
for (i = 0; i < n_channels; i++) {
channel_cfg[i].flags = cpu_to_le32(flags);
- channel_cfg[i].v1.channel_num = channels[i]->hw_value;
+ channel_cfg[i].channel_num = channels[i]->hw_value;
if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
enum nl80211_band band = channels[i]->band;
@@ -1626,13 +1626,13 @@ iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
&cp->channel_config[i];
cfg->flags = cpu_to_le32(flags);
- cfg->v2.channel_num = channels[i]->hw_value;
+ cfg->channel_num = channels[i]->hw_value;
cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
cfg->v2.iter_count = 1;
cfg->v2.iter_interval = 0;
iwl_mvm_scan_ch_add_n_aps_override(vif_type,
- cfg->v2.channel_num,
+ cfg->channel_num,
cfg->v2.band, bitmap,
bitmap_n_entries);
}
@@ -1656,9 +1656,20 @@ iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm,
u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band);
cfg->flags = cpu_to_le32(flags | n_aps_flag);
- cfg->v2.channel_num = channels[i]->hw_value;
+ cfg->channel_num = channels[i]->hw_value;
if (cfg80211_channel_is_psc(channels[i]))
cfg->flags = 0;
+
+ if (band == NL80211_BAND_6GHZ) {
+ /* 6 GHz channels should only appear in a scan request
+ * that has scan_6ghz set. The only exception is MLO
+ * scan, which has to be passive.
+ */
+ WARN_ON_ONCE(cfg->flags != 0);
+ cfg->flags =
+ cpu_to_le32(IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE);
+ }
+
cfg->v2.iter_count = 1;
cfg->v2.iter_interval = 0;
if (version < 17)
@@ -1778,7 +1789,7 @@ iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm,
!params->n_6ghz_params && params->n_ssids)
continue;
- cfg->v1.channel_num = params->channels[i]->hw_value;
+ cfg->channel_num = params->channels[i]->hw_value;
if (version < 17)
cfg->v2.band = PHY_BAND_6;
else
@@ -2466,7 +2477,7 @@ iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm,
if (!cfg80211_channel_is_psc(channel))
continue;
- cfg->v5.channel_num = channel->hw_value;
+ cfg->channel_num = channel->hw_value;
cfg->v5.iter_count = 1;
cfg->v5.iter_interval = 0;
@@ -3168,18 +3179,16 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
params.n_channels = j;
}
- if (non_psc_included &&
- !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
- kfree(params.channels);
- return -ENOBUFS;
+ if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
+ ret = -ENOBUFS;
+ goto out;
}
uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
-
- if (non_psc_included)
- kfree(params.channels);
- if (uid < 0)
- return uid;
+ if (uid < 0) {
+ ret = uid;
+ goto out;
+ }
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (!ret) {
@@ -3197,6 +3206,9 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
}
+out:
+ if (non_psc_included)
+ kfree(params.channels);
return ret;
}
@@ -3301,13 +3313,23 @@ void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
mvm->scan_start);
}
-static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
+static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type, bool *wait)
{
- struct iwl_umac_scan_abort cmd = {};
+ struct iwl_umac_scan_abort abort_cmd = {};
+ struct iwl_host_cmd cmd = {
+ .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC),
+ .len = { sizeof(abort_cmd), },
+ .data = { &abort_cmd, },
+ .flags = CMD_SEND_IN_RFKILL,
+ };
+
int uid, ret;
+ u32 status = IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND;
lockdep_assert_held(&mvm->mutex);
+ *wait = true;
+
/* We should always get a valid index here, because we already
* checked that this type of scan was running in the generic
* code.
@@ -3316,17 +3338,28 @@ static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
if (WARN_ON_ONCE(uid < 0))
return uid;
- cmd.uid = cpu_to_le32(uid);
+ abort_cmd.uid = cpu_to_le32(uid);
IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
- ret = iwl_mvm_send_cmd_pdu(mvm,
- WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC),
- CMD_SEND_IN_RFKILL, sizeof(cmd), &cmd);
+ ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
+
+ IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d, status=%u\n", ret, status);
if (!ret)
mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
- IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d\n", ret);
+ /* Handle the case that the FW is no longer familiar with the scan that
+ * is to be stopped. In such a case, it is expected that the scan
+ * complete notification was already received but not yet processed.
+ * In such a case, there is no need to wait for a scan complete
+ * notification and the flow should continue similar to the case that
+ * the scan was really aborted.
+ */
+ if (status == IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND) {
+ mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
+ *wait = false;
+ }
+
return ret;
}
@@ -3336,6 +3369,7 @@ static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
SCAN_OFFLOAD_COMPLETE, };
int ret;
+ bool wait = true;
lockdep_assert_held(&mvm->mutex);
@@ -3347,7 +3381,7 @@ static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
- ret = iwl_mvm_umac_scan_abort(mvm, type);
+ ret = iwl_mvm_umac_scan_abort(mvm, type, &wait);
else
ret = iwl_mvm_lmac_scan_abort(mvm);
@@ -3355,6 +3389,10 @@ static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
return ret;
+ } else if (!wait) {
+ IWL_DEBUG_SCAN(mvm, "no need to wait for scan type %d\n", type);
+ iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
+ return 0;
}
return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
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