@@ -244,6 +244,8 @@ static const u32 ath12k_smps_map[] = {
static int ath12k_start_vdev_delay(struct ath12k *ar,
struct ath12k_vif *arvif);
static void ath12k_mac_stop(struct ath12k *ar);
+static int ath12k_mac_vdev_create(struct ath12k *ar, struct ieee80211_vif *vif);
+static int ath12k_mac_vdev_delete(struct ath12k *ar, struct ieee80211_vif *vif);
static const char *ath12k_mac_phymode_str(enum wmi_phy_mode mode)
{
@@ -2839,6 +2841,45 @@ static void ath12k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
mutex_unlock(&ar->conf_mutex);
}
+static struct ath12k*
+ath12k_mac_select_scan_device(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_scan_request *req)
+{
+ struct ath12k_hw *ah = hw->priv;
+ enum nl80211_band band;
+ struct ath12k *ar;
+ int i;
+
+ if (ah->num_radio == 1)
+ return ah->radio;
+
+ /* Currently mac80211 supports splitting scan requests into
+ * multiple scan requests per band.
+ * Loop through first channel and determine the scan radio
+ * TODO: There could be 5 GHz low/high channels in that case
+ * split the hw request and perform multiple scans
+ */
+
+ if (req->req.channels[0]->center_freq < ATH12K_MIN_5G_FREQ)
+ band = NL80211_BAND_2GHZ;
+ else if (req->req.channels[0]->center_freq < ATH12K_MIN_6G_FREQ)
+ band = NL80211_BAND_5GHZ;
+ else
+ band = NL80211_BAND_6GHZ;
+
+ ar = ah->radio;
+
+ for (i = 0; i < ah->num_radio; i++) {
+ /* TODO 5 GHz low high split changes */
+ if (ar->mac.sbands[band].channels)
+ return ar;
+ ar++;
+ }
+
+ return NULL;
+}
+
void __ath12k_mac_scan_finish(struct ath12k *ar)
{
struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
@@ -3008,15 +3049,68 @@ static int ath12k_mac_op_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_scan_request *hw_req)
{
struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
- struct ath12k *ar;
+ struct ath12k *ar, *prev_ar;
struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
struct cfg80211_scan_request *req = &hw_req->req;
struct ath12k_wmi_scan_req_arg arg = {};
int ret;
int i;
+ bool create = true;
- ar = ath12k_ah_to_ar(ah, 0);
+ if (ah->num_radio == 1) {
+ WARN_ON(!arvif->is_created);
+ ar = ath12k_ah_to_ar(ah, 0);
+ goto scan;
+ }
+
+ /* Since the targeted scan device could depend on the frequency
+ * requested in the hw_req, select the corresponding radio
+ */
+ ar = ath12k_mac_select_scan_device(hw, vif, hw_req);
+ if (!ar)
+ return -EINVAL;
+ /* If the vif is already assigned to a specific vdev of an ar,
+ * check whether its already started, vdev which is started
+ * are not allowed to switch to a new radio.
+ * If the vdev is not started, but was earlier created on a
+ * different ar, delete that vdev and create a new one. We don't
+ * delete at the scan stop as an optimization to avoid reduntant
+ * delete-create vdev's for the same ar, in case the request is
+ * always on the same band for the vif
+ */
+ if (arvif->is_created) {
+ if (WARN_ON(!arvif->ar))
+ return -EINVAL;
+
+ if (ar != arvif->ar && arvif->is_started)
+ return -EINVAL;
+
+ if (ar != arvif->ar) {
+ /* backup the previously used ar ptr, since the vdev delete
+ * would assign the arvif->ar to NULL after the call
+ */
+ prev_ar = arvif->ar;
+ mutex_lock(&prev_ar->conf_mutex);
+ ret = ath12k_mac_vdev_delete(prev_ar, vif);
+ mutex_unlock(&prev_ar->conf_mutex);
+ if (ret)
+ ath12k_warn(prev_ar->ab,
+ "unable to delete scan vdev %d\n", ret);
+ } else {
+ create = false;
+ }
+ }
+ if (create) {
+ mutex_lock(&ar->conf_mutex);
+ ret = ath12k_mac_vdev_create(ar, vif);
+ mutex_unlock(&ar->conf_mutex);
+ if (ret) {
+ ath12k_warn(ar->ab, "unable to create scan vdev %d\n", ret);
+ return -EINVAL;
+ }
+ }
+scan:
mutex_lock(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
@@ -3102,10 +3196,13 @@ static int ath12k_mac_op_hw_scan(struct ieee80211_hw *hw,
static void ath12k_mac_op_cancel_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
- struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
struct ath12k *ar;
+ struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
- ar = ath12k_ah_to_ar(ah, 0);
+ if (!arvif->is_created)
+ return;
+
+ ar = arvif->ar;
mutex_lock(&ar->conf_mutex);
ath12k_scan_abort(ar);
@@ -5768,6 +5865,7 @@ static int ath12k_mac_vdev_create(struct ath12k *ar, struct ieee80211_vif *vif)
if (vif->type != NL80211_IFTYPE_MONITOR && ar->monitor_conf_enabled)
ath12k_mac_monitor_vdev_create(ar);
+ arvif->ar = ar;
return ret;
err_peer_del:
@@ -5794,6 +5892,7 @@ static int ath12k_mac_vdev_create(struct ath12k *ar, struct ieee80211_vif *vif)
ath12k_wmi_vdev_delete(ar, arvif->vdev_id);
ar->num_created_vdevs--;
arvif->is_created = false;
+ arvif->ar = NULL;
ar->allocated_vdev_map &= ~(1LL << arvif->vdev_id);
ab->free_vdev_map |= 1LL << arvif->vdev_id;
ab->free_vdev_stats_id_map &= ~(1LL << arvif->vdev_stats_id);
@@ -5811,14 +5910,46 @@ static struct ath12k *ath12k_mac_assign_vif_to_vdev(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct ath12k_hw *ah = hw->priv;
- struct ath12k *ar;
+ struct ath12k *ar, *prev_ar;
struct ath12k_base *ab;
struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
u8 bit;
int ret;
if (arvif->ar) {
- WARN_ON(!arvif->is_created);
+ /* This is not expected really */
+ if (WARN_ON(!arvif->is_created)) {
+ arvif->ar = NULL;
+ return NULL;
+ }
+
+ if (ah->num_radio == 1)
+ goto out;
+
+ ar = ath12k_get_ar_by_ctx(hw, ctx);
+ /* This can happen as scan vdev gets created during multiple scans
+ * across different radios before a vdev is brought up in
+ * a certain radio
+ */
+ if (ar != arvif->ar) {
+ if (WARN_ON(arvif->is_started))
+ return NULL;
+
+ /* backup the previously used ar ptr since arvif->ar would
+ * be set to NULL after vdev delete is done
+ */
+ prev_ar = arvif->ar;
+ mutex_lock(&prev_ar->conf_mutex);
+ ret = ath12k_mac_vdev_delete(prev_ar, vif);
+
+ if (ret)
+ ath12k_warn(prev_ar->ab, "unable to delete vdev %d\n", ret);
+ mutex_unlock(&prev_ar->conf_mutex);
+ ret = ath12k_mac_vdev_create(ar, vif);
+ if (ret)
+ ath12k_warn(ar->ab, "unable to create vdev %d\n", ret);
+ mutex_unlock(&ar->conf_mutex);
+ }
goto out;
}
@@ -5927,38 +6058,19 @@ static void ath12k_mac_vif_unref(struct ath12k_dp *dp, struct ieee80211_vif *vif
}
}
-static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
+static int ath12k_mac_vdev_delete(struct ath12k *ar, struct ieee80211_vif *vif)
{
- struct ath12k *ar;
struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
- struct ath12k_base *ab;
+ struct ath12k_base *ab = ar->ab;
unsigned long time_left;
int ret;
- if (!arvif->is_created)
- return;
-
- ar = arvif->ar;
- ab = ar->ab;
-
- mutex_lock(&ar->conf_mutex);
-
- ath12k_dbg(ab, ATH12K_DBG_MAC, "mac remove interface (vdev %d)\n",
- arvif->vdev_id);
-
- if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
- ret = ath12k_peer_delete(ar, arvif->vdev_id, vif->addr);
- if (ret)
- ath12k_warn(ab, "failed to submit AP self-peer removal on vdev %d: %d\n",
- arvif->vdev_id, ret);
- }
-
+ lockdep_assert_held(&ar->conf_mutex);
reinit_completion(&ar->vdev_delete_done);
ret = ath12k_wmi_vdev_delete(ar, arvif->vdev_id);
if (ret) {
- ath12k_warn(ab, "failed to delete WMI vdev %d: %d\n",
+ ath12k_warn(ab, "failed to delete WMI scan vdev %d: %d\n",
arvif->vdev_id, ret);
goto err_vdev_del;
}
@@ -5970,6 +6082,10 @@ static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
goto err_vdev_del;
}
+ ab->free_vdev_map |= 1LL << arvif->vdev_id;
+ ar->allocated_vdev_map &= ~(1LL << arvif->vdev_id);
+ ar->num_created_vdevs--;
+
if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR) {
ar->monitor_vdev_id = -1;
ar->monitor_vdev_created = false;
@@ -5977,12 +6093,6 @@ static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
ret = ath12k_mac_monitor_vdev_delete(ar);
}
- ab->free_vdev_map |= 1LL << (arvif->vdev_id);
- ar->allocated_vdev_map &= ~(1LL << arvif->vdev_id);
- ab->free_vdev_stats_id_map &= ~(1LL << arvif->vdev_stats_id);
- ar->num_created_vdevs--;
- arvif->is_created = false;
-
ath12k_dbg(ab, ATH12K_DBG_MAC, "vdev %pM deleted, vdev_id %d\n",
vif->addr, arvif->vdev_id);
@@ -6004,6 +6114,39 @@ static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
clear_bit(ATH12K_FLAG_MONITOR_ENABLED, &ar->monitor_flags);
/* TODO: recal traffic pause state based on the available vdevs */
+ arvif->is_created = false;
+ arvif->ar = NULL;
+
+ return ret;
+}
+
+static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct ath12k *ar;
+ struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+ struct ath12k_base *ab;
+ int ret;
+
+ if (!arvif->is_created)
+ return;
+
+ ar = arvif->ar;
+ ab = ar->ab;
+
+ mutex_lock(&ar->conf_mutex);
+
+ ath12k_dbg(ab, ATH12K_DBG_MAC, "mac remove interface (vdev %d)\n",
+ arvif->vdev_id);
+
+ if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
+ ret = ath12k_peer_delete(ar, arvif->vdev_id, vif->addr);
+ if (ret)
+ ath12k_warn(ab, "failed to submit AP self-peer removal on vdev %d: %d\n",
+ arvif->vdev_id, ret);
+ }
+
+ ath12k_mac_vdev_delete(ar, vif);
mutex_unlock(&ar->conf_mutex);
}