Merge tag 'iwlwifi-for-kalle-2017-06-05' of git://git.kernel.org/pub/…

…scm/linux/kernel/git/iwlwifi/iwlwifi-fixes

Fixes for 4.12:

* Some memory leaks;
* IBSS support;
* Some bugzilla bugs;
* Some runtime PM fixes;
* Rate-scaling issues;
* Some locking problems;

drivers/net/wireless/intel/iwlwifi/iwl-7000.c

@@ -79,8 +79,8 @@
 /* Lowest firmware API version supported */
 #define IWL7260_UCODE_API_MIN	17
 #define IWL7265_UCODE_API_MIN	17
-#define IWL7265D_UCODE_API_MIN	17
-#define IWL3168_UCODE_API_MIN	20
+#define IWL7265D_UCODE_API_MIN	22
+#define IWL3168_UCODE_API_MIN	22
 
 /* NVM versions */
 #define IWL7260_NVM_VERSION		0x0a1d

drivers/net/wireless/intel/iwlwifi/iwl-8000.c

@@ -74,8 +74,8 @@
 #define IWL8265_UCODE_API_MAX	30
 
 /* Lowest firmware API version supported */
-#define IWL8000_UCODE_API_MIN	17
-#define IWL8265_UCODE_API_MIN	20
+#define IWL8000_UCODE_API_MIN	22
+#define IWL8265_UCODE_API_MIN	22
 
 /* NVM versions */
 #define IWL8000_NVM_VERSION		0x0a1d

drivers/net/wireless/intel/iwlwifi/iwl-prph.h

@@ -370,6 +370,7 @@
 #define MON_DMARB_RD_DATA_ADDR		(0xa03c5c)
 
 #define DBGC_IN_SAMPLE			(0xa03c00)
+#define DBGC_OUT_CTRL			(0xa03c0c)
 
 /* enable the ID buf for read */
 #define WFPM_PS_CTL_CLR			0xA0300C

drivers/net/wireless/intel/iwlwifi/mvm/fw-api-rs.h

@@ -307,6 +307,11 @@ enum {
 /* Bit 1-3: LQ command color. Used to match responses to LQ commands */
 #define LQ_FLAG_COLOR_POS               1
 #define LQ_FLAG_COLOR_MSK               (7 << LQ_FLAG_COLOR_POS)
+#define LQ_FLAG_COLOR_GET(_f)		(((_f) & LQ_FLAG_COLOR_MSK) >>\
+					 LQ_FLAG_COLOR_POS)
+#define LQ_FLAGS_COLOR_INC(_c)		((((_c) + 1) << LQ_FLAG_COLOR_POS) &\
+					 LQ_FLAG_COLOR_MSK)
+#define LQ_FLAG_COLOR_SET(_f, _c)	((_c) | ((_f) & ~LQ_FLAG_COLOR_MSK))
 
 /* Bit 4-5: Tx RTS BW Signalling
  * (0) No RTS BW signalling

drivers/net/wireless/intel/iwlwifi/mvm/fw-api-tx.h

@@ -519,8 +519,11 @@ struct agg_tx_status {
  * bit-7 invalid rate indication
  */
 #define TX_RES_INIT_RATE_INDEX_MSK 0x0f
+#define TX_RES_RATE_TABLE_COLOR_POS 4
 #define TX_RES_RATE_TABLE_COLOR_MSK 0x70
 #define TX_RES_INV_RATE_INDEX_MSK 0x80
+#define TX_RES_RATE_TABLE_COL_GET(_f) (((_f) & TX_RES_RATE_TABLE_COLOR_MSK) >>\
+				       TX_RES_RATE_TABLE_COLOR_POS)
 
 #define IWL_MVM_TX_RES_GET_TID(_ra_tid) ((_ra_tid) & 0x0f)
 #define IWL_MVM_TX_RES_GET_RA(_ra_tid) ((_ra_tid) >> 4)

drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c

@@ -1002,14 +1002,6 @@ int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm,
 	return 0;
 }
 
-static inline void iwl_mvm_restart_early_start(struct iwl_mvm *mvm)
-{
-	if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000)
-		iwl_clear_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
-	else
-		iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 1);
-}
-
 int iwl_mvm_start_fw_dbg_conf(struct iwl_mvm *mvm, u8 conf_id)
 {
 	u8 *ptr;
@@ -1023,10 +1015,8 @@ int iwl_mvm_start_fw_dbg_conf(struct iwl_mvm *mvm, u8 conf_id)
 	/* EARLY START - firmware's configuration is hard coded */
 	if ((!mvm->fw->dbg_conf_tlv[conf_id] ||
 	     !mvm->fw->dbg_conf_tlv[conf_id]->num_of_hcmds) &&
-	    conf_id == FW_DBG_START_FROM_ALIVE) {
-		iwl_mvm_restart_early_start(mvm);
+	    conf_id == FW_DBG_START_FROM_ALIVE)
 		return 0;
-	}
 
 	if (!mvm->fw->dbg_conf_tlv[conf_id])
 		return -EINVAL;

drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c

@@ -1040,7 +1040,7 @@ static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
 		struct iwl_mac_beacon_cmd_v6 beacon_cmd_v6;
 		struct iwl_mac_beacon_cmd_v7 beacon_cmd;
 	} u = {};
-	struct iwl_mac_beacon_cmd beacon_cmd;
+	struct iwl_mac_beacon_cmd beacon_cmd = {};
 	struct ieee80211_tx_info *info;
 	u32 beacon_skb_len;
 	u32 rate, tx_flags;

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

@@ -1730,8 +1730,11 @@ int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq);
  */
 static inline u32 iwl_mvm_flushable_queues(struct iwl_mvm *mvm)
 {
+	u32 cmd_queue = iwl_mvm_is_dqa_supported(mvm) ? IWL_MVM_DQA_CMD_QUEUE :
+		IWL_MVM_CMD_QUEUE;
+
 	return ((BIT(mvm->cfg->base_params->num_of_queues) - 1) &
-		~BIT(IWL_MVM_CMD_QUEUE));
+		~BIT(cmd_queue));
 }
 
 static inline
@@ -1753,6 +1756,7 @@ static inline void iwl_mvm_stop_device(struct iwl_mvm *mvm)
 	if (!iwl_mvm_has_new_tx_api(mvm))
 		iwl_free_fw_paging(mvm);
 	mvm->ucode_loaded = false;
+	mvm->fw_dbg_conf = FW_DBG_INVALID;
 	iwl_trans_stop_device(mvm->trans);
 }
 

drivers/net/wireless/intel/iwlwifi/mvm/ops.c

@@ -1149,21 +1149,37 @@ static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
 
 	mutex_lock(&mvm->mutex);
 
-	/* stop recording */
 	if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
+		/* stop recording */
 		iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
+
+		iwl_mvm_fw_error_dump(mvm);
+
+		/* start recording again if the firmware is not crashed */
+		if (!test_bit(STATUS_FW_ERROR, &mvm->trans->status) &&
+		    mvm->fw->dbg_dest_tlv)
+			iwl_clear_bits_prph(mvm->trans,
+					    MON_BUFF_SAMPLE_CTL, 0x100);
 	} else {
+		u32 in_sample = iwl_read_prph(mvm->trans, DBGC_IN_SAMPLE);
+		u32 out_ctrl = iwl_read_prph(mvm->trans, DBGC_OUT_CTRL);
+
+		/* stop recording */
 		iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
-		/* wait before we collect the data till the DBGC stop */
 		udelay(100);
-	}
+		iwl_write_prph(mvm->trans, DBGC_OUT_CTRL, 0);
+		/* wait before we collect the data till the DBGC stop */
+		udelay(500);
 
-	iwl_mvm_fw_error_dump(mvm);
+		iwl_mvm_fw_error_dump(mvm);
 
-	/* start recording again if the firmware is not crashed */
-	WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
-		     mvm->fw->dbg_dest_tlv &&
-		     iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
+		/* start recording again if the firmware is not crashed */
+		if (!test_bit(STATUS_FW_ERROR, &mvm->trans->status) &&
+		    mvm->fw->dbg_dest_tlv) {
+			iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, in_sample);
+			iwl_write_prph(mvm->trans, DBGC_OUT_CTRL, out_ctrl);
+		}
+	}
 
 	mutex_unlock(&mvm->mutex);
 

drivers/net/wireless/intel/iwlwifi/mvm/rs.c

@@ -2,7 +2,7 @@
  *
  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- * Copyright(c) 2016 Intel Deutschland GmbH
+ * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as
@@ -1083,34 +1083,6 @@ static void rs_get_lower_rate_down_column(struct iwl_lq_sta *lq_sta,
 		rs_get_lower_rate_in_column(lq_sta, rate);
 }
 
-/* Check if both rates are identical
- * allow_ant_mismatch enables matching a SISO rate on ANT_A or ANT_B
- * with a rate indicating STBC/BFER and ANT_AB.
- */
-static inline bool rs_rate_equal(struct rs_rate *a,
-				 struct rs_rate *b,
-				 bool allow_ant_mismatch)
-
-{
-	bool ant_match = (a->ant == b->ant) && (a->stbc == b->stbc) &&
-		(a->bfer == b->bfer);
-
-	if (allow_ant_mismatch) {
-		if (a->stbc || a->bfer) {
-			WARN_ONCE(a->ant != ANT_AB, "stbc %d bfer %d ant %d",
-				  a->stbc, a->bfer, a->ant);
-			ant_match |= (b->ant == ANT_A || b->ant == ANT_B);
-		} else if (b->stbc || b->bfer) {
-			WARN_ONCE(b->ant != ANT_AB, "stbc %d bfer %d ant %d",
-				  b->stbc, b->bfer, b->ant);
-			ant_match |= (a->ant == ANT_A || a->ant == ANT_B);
-		}
-	}
-
-	return (a->type == b->type) && (a->bw == b->bw) && (a->sgi == b->sgi) &&
-		(a->ldpc == b->ldpc) && (a->index == b->index) && ant_match;
-}
-
 /* Check if both rates share the same column */
 static inline bool rs_rate_column_match(struct rs_rate *a,
 					struct rs_rate *b)
@@ -1182,12 +1154,12 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 	u32 lq_hwrate;
 	struct rs_rate lq_rate, tx_resp_rate;
 	struct iwl_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl;
-	u8 reduced_txp = (uintptr_t)info->status.status_driver_data[0];
+	u32 tlc_info = (uintptr_t)info->status.status_driver_data[0];
+	u8 reduced_txp = tlc_info & RS_DRV_DATA_TXP_MSK;
+	u8 lq_color = RS_DRV_DATA_LQ_COLOR_GET(tlc_info);
 	u32 tx_resp_hwrate = (uintptr_t)info->status.status_driver_data[1];
 	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 	struct iwl_lq_sta *lq_sta = &mvmsta->lq_sta;
-	bool allow_ant_mismatch = fw_has_api(&mvm->fw->ucode_capa,
-					     IWL_UCODE_TLV_API_LQ_SS_PARAMS);
 
 	/* Treat uninitialized rate scaling data same as non-existing. */
 	if (!lq_sta) {
@@ -1262,10 +1234,10 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 	rs_rate_from_ucode_rate(lq_hwrate, info->band, &lq_rate);
 
 	/* Here we actually compare this rate to the latest LQ command */
-	if (!rs_rate_equal(&tx_resp_rate, &lq_rate, allow_ant_mismatch)) {
+	if (lq_color != LQ_FLAG_COLOR_GET(table->flags)) {
 		IWL_DEBUG_RATE(mvm,
-			       "initial tx resp rate 0x%x does not match 0x%x\n",
-			       tx_resp_hwrate, lq_hwrate);
+			       "tx resp color 0x%x does not match 0x%x\n",
+			       lq_color, LQ_FLAG_COLOR_GET(table->flags));
 
 		/*
 		 * Since rates mis-match, the last LQ command may have failed.
@@ -3326,6 +3298,7 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
 	u8 valid_tx_ant = 0;
 	struct iwl_lq_cmd *lq_cmd = &lq_sta->lq;
 	bool toggle_ant = false;
+	u32 color;
 
 	memcpy(&rate, initial_rate, sizeof(rate));
 
@@ -3380,6 +3353,9 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
 				 num_rates, num_retries, valid_tx_ant,
 				 toggle_ant);
 
+	/* update the color of the LQ command (as a counter at bits 1-3) */
+	color = LQ_FLAGS_COLOR_INC(LQ_FLAG_COLOR_GET(lq_cmd->flags));
+	lq_cmd->flags = LQ_FLAG_COLOR_SET(lq_cmd->flags, color);
 }
 
 struct rs_bfer_active_iter_data {

drivers/net/wireless/intel/iwlwifi/mvm/rs.h

@@ -2,6 +2,7 @@
  *
  * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2015 Intel Mobile Communications GmbH
+ * Copyright(c) 2017 Intel Deutschland GmbH
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as
@@ -357,6 +358,20 @@ struct iwl_lq_sta {
 	} pers;
 };
 
+/* ieee80211_tx_info's status_driver_data[0] is packed with lq color and txp
+ * Note, it's iwlmvm <-> mac80211 interface.
+ * bits 0-7: reduced tx power
+ * bits 8-10: LQ command's color
+ */
+#define RS_DRV_DATA_TXP_MSK 0xff
+#define RS_DRV_DATA_LQ_COLOR_POS 8
+#define RS_DRV_DATA_LQ_COLOR_MSK (7 << RS_DRV_DATA_LQ_COLOR_POS)
+#define RS_DRV_DATA_LQ_COLOR_GET(_f) (((_f) & RS_DRV_DATA_LQ_COLOR_MSK) >>\
+				      RS_DRV_DATA_LQ_COLOR_POS)
+#define RS_DRV_DATA_PACK(_c, _p) ((void *)(uintptr_t)\
+				  (((uintptr_t)_p) |\
+				   ((_c) << RS_DRV_DATA_LQ_COLOR_POS)))
+
 /* Initialize station's rate scaling information after adding station */
 void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 			  enum nl80211_band band, bool init);

drivers/net/wireless/intel/iwlwifi/mvm/sta.c

@@ -2120,7 +2120,8 @@ int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 	if (!iwl_mvm_is_dqa_supported(mvm))
 		return 0;
 
-	if (WARN_ON(vif->type != NL80211_IFTYPE_AP))
+	if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
+		    vif->type != NL80211_IFTYPE_ADHOC))
 		return -ENOTSUPP;
 
 	/*
@@ -2155,6 +2156,16 @@ int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 		mvmvif->cab_queue = queue;
 	} else if (!fw_has_api(&mvm->fw->ucode_capa,
 			       IWL_UCODE_TLV_API_STA_TYPE)) {
+		/*
+		 * In IBSS, ieee80211_check_queues() sets the cab_queue to be
+		 * invalid, so make sure we use the queue we want.
+		 * Note that this is done here as we want to avoid making DQA
+		 * changes in mac80211 layer.
+		 */
+		if (vif->type == NL80211_IFTYPE_ADHOC) {
+			vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
+			mvmvif->cab_queue = vif->cab_queue;
+		}
 		iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0,
 				   &cfg, timeout);
 	}
@@ -3321,18 +3332,15 @@ int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
 
 	/* Get the station from the mvm local station table */
 	mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);
-	if (!mvm_sta) {
-		IWL_ERR(mvm, "Failed to find station\n");
-		return -EINVAL;
-	}
-	sta_id = mvm_sta->sta_id;
+	if (mvm_sta)
+		sta_id = mvm_sta->sta_id;
 
 	IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
 		      keyconf->keyidx, sta_id);
 
-	if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
-	    keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
-	    keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
+	if (mvm_sta && (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
+			keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
+			keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256))
 		return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
 
 	if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {

drivers/net/wireless/intel/iwlwifi/mvm/sta.h

@@ -313,6 +313,7 @@ enum iwl_mvm_agg_state {
  *	This is basically (last acked packet++).
  * @rate_n_flags: Rate at which Tx was attempted. Holds the data between the
  *	Tx response (TX_CMD), and the block ack notification (COMPRESSED_BA).
+ * @lq_color: the color of the LQ command as it appears in tx response.
  * @amsdu_in_ampdu_allowed: true if A-MSDU in A-MPDU is allowed.
  * @state: state of the BA agreement establishment / tear down.
  * @txq_id: Tx queue used by the BA session / DQA
@@ -331,6 +332,7 @@ struct iwl_mvm_tid_data {
 	u16 next_reclaimed;
 	/* The rest is Tx AGG related */
 	u32 rate_n_flags;
+	u8 lq_color;
 	bool amsdu_in_ampdu_allowed;
 	enum iwl_mvm_agg_state state;
 	u16 txq_id;

drivers/net/wireless/intel/iwlwifi/mvm/tt.c

@@ -790,11 +790,13 @@ static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev,
 	struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 	int ret;
 
-	if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR))
-		return -EIO;
-
 	mutex_lock(&mvm->mutex);
 
+	if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
+		ret = -EIO;
+		goto unlock;
+	}
+
 	if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) {
 		ret = -EINVAL;
 		goto unlock;