ath10k: clean up sta auth/assoc code

The code can be symmetrical so make it so. This
makes it easier to understand and work with.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index d7a2d6f..78726a9 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -1492,6 +1492,9 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw,
 
        lockdep_assert_held(&ar->conf_mutex);
 
+       ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
+                  arvif->vdev_id, arvif->bssid, arvif->aid);
+
        rcu_read_lock();
 
        ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
@@ -1534,6 +1537,8 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw,
                   "mac vdev %d up (associated) bssid %pM aid %d\n",
                   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);
 
+       WARN_ON(arvif->is_up);
+
        arvif->aid = bss_conf->aid;
        ether_addr_copy(arvif->bssid, bss_conf->bssid);
 
@@ -1547,9 +1552,6 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw,
        arvif->is_up = true;
 }
 
-/*
- * FIXME: flush TIDs
- */
 static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
                                struct ieee80211_vif *vif)
 {
@@ -1559,33 +1561,15 @@ static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
 
        lockdep_assert_held(&ar->conf_mutex);
 
-       /*
-        * For some reason, calling VDEV-DOWN before VDEV-STOP
-        * makes the FW to send frames via HTT after disassociation.
-        * No idea why this happens, even though VDEV-DOWN is supposed
-        * to be analogous to link down, so just stop the VDEV.
-        */
-       ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d stop (disassociated\n",
-                  arvif->vdev_id);
-
-       /* FIXME: check return value */
-       ret = ath10k_vdev_stop(arvif);
-
-       /*
-        * If we don't call VDEV-DOWN after VDEV-STOP FW will remain active and
-        * report beacons from previously associated network through HTT.
-        * This in turn would spam mac80211 WARN_ON if we bring down all
-        * interfaces as it expects there is no rx when no interface is
-        * running.
-        */
-       ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d down\n", arvif->vdev_id);
+       ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
+                  arvif->vdev_id, arvif->bssid);
 
-       /* FIXME: why don't we print error if wmi call fails? */
        ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
+       if (ret)
+               ath10k_warn(ar, "faield to down vdev %i: %d\n",
+                           arvif->vdev_id, ret);
 
        arvif->def_wep_key_idx = 0;
-
-       arvif->is_started = false;
        arvif->is_up = false;
 }
 
@@ -3116,54 +3100,8 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
                arvif->u.ap.hidden_ssid = info->hidden_ssid;
        }
 
-       /*
-        * Firmware manages AP self-peer internally so make sure to not create
-        * it in driver. Otherwise AP self-peer deletion may timeout later.
-        */
-       if (changed & BSS_CHANGED_BSSID &&
-           vif->type != NL80211_IFTYPE_AP) {
-               if (!is_zero_ether_addr(info->bssid)) {
-                       if (vif->type == NL80211_IFTYPE_STATION) {
-                               ath10k_dbg(ar, ATH10K_DBG_MAC,
-                                          "mac vdev %d create peer %pM\n",
-                                          arvif->vdev_id, info->bssid);
-
-                               ret = ath10k_peer_create(ar, arvif->vdev_id,
-                                                        info->bssid);
-                               if (ret)
-                                       ath10k_warn(ar, "failed to add peer %pM for vdev %d when changing bssid: %i\n",
-                                                   info->bssid, arvif->vdev_id,
-                                                   ret);
-                               /*
-                                * this is never erased as we it for crypto key
-                                * clearing; this is FW requirement
-                                */
-                               ether_addr_copy(arvif->bssid, info->bssid);
-
-                               ath10k_dbg(ar, ATH10K_DBG_MAC,
-                                          "mac vdev %d start %pM\n",
-                                          arvif->vdev_id, info->bssid);
-
-                               ret = ath10k_vdev_start(arvif);
-                               if (ret) {
-                                       ath10k_warn(ar, "failed to start vdev %i: %d\n",
-                                                   arvif->vdev_id, ret);
-                                       goto exit;
-                               }
-
-                               arvif->is_started = true;
-                       }
-
-                       /*
-                        * Mac80211 does not keep IBSS bssid when leaving IBSS,
-                        * so driver need to store it. It is needed when leaving
-                        * IBSS in order to remove BSSID peer.
-                        */
-                       if (vif->type == NL80211_IFTYPE_ADHOC)
-                               memcpy(arvif->bssid, info->bssid,
-                                      ETH_ALEN);
-               }
-       }
+       if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
+               ether_addr_copy(arvif->bssid, info->bssid);
 
        if (changed & BSS_CHANGED_BEACON_ENABLED)
                ath10k_control_beaconing(arvif, info);
@@ -3225,10 +3163,11 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
                                ath10k_monitor_stop(ar);
                        ath10k_bss_assoc(hw, vif, info);
                        ath10k_monitor_recalc(ar);
+               } else {
+                       ath10k_bss_disassoc(hw, vif);
                }
        }
 
-exit:
        mutex_unlock(&ar->conf_mutex);
 }
 
@@ -3537,8 +3476,7 @@ static int ath10k_sta_state(struct ieee80211_hw *hw,
        mutex_lock(&ar->conf_mutex);
 
        if (old_state == IEEE80211_STA_NOTEXIST &&
-           new_state == IEEE80211_STA_NONE &&
-           vif->type != NL80211_IFTYPE_STATION) {
+           new_state == IEEE80211_STA_NONE) {
                /*
                 * New station addition.
                 */
@@ -3562,6 +3500,21 @@ static int ath10k_sta_state(struct ieee80211_hw *hw,
                if (ret)
                        ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
                                    sta->addr, arvif->vdev_id, ret);
+
+               if (vif->type == NL80211_IFTYPE_STATION) {
+                       WARN_ON(arvif->is_started);
+
+                       ret = ath10k_vdev_start(arvif);
+                       if (ret) {
+                               ath10k_warn(ar, "failed to start vdev %i: %d\n",
+                                           arvif->vdev_id, ret);
+                               WARN_ON(ath10k_peer_delete(ar, arvif->vdev_id,
+                                                          sta->addr));
+                               goto exit;
+                       }
+
+                       arvif->is_started = true;
+               }
        } else if ((old_state == IEEE80211_STA_NONE &&
                    new_state == IEEE80211_STA_NOTEXIST)) {
                /*
@@ -3570,13 +3523,23 @@ static int ath10k_sta_state(struct ieee80211_hw *hw,
                ath10k_dbg(ar, ATH10K_DBG_MAC,
                           "mac vdev %d peer delete %pM (sta gone)\n",
                           arvif->vdev_id, sta->addr);
+
+               if (vif->type == NL80211_IFTYPE_STATION) {
+                       WARN_ON(!arvif->is_started);
+
+                       ret = ath10k_vdev_stop(arvif);
+                       if (ret)
+                               ath10k_warn(ar, "failed to stop vdev %i: %d\n",
+                                           arvif->vdev_id, ret);
+
+                       arvif->is_started = false;
+               }
+
                ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
                if (ret)
                        ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
                                    sta->addr, arvif->vdev_id, ret);
 
-               if (vif->type == NL80211_IFTYPE_STATION)
-                       ath10k_bss_disassoc(hw, vif);
        } else if (old_state == IEEE80211_STA_AUTH &&
                   new_state == IEEE80211_STA_ASSOC &&
                   (vif->type == NL80211_IFTYPE_AP ||