Merge tag 'mlx5-updates-2023-02-07' of git://git.kernel.org/pub/scm/l…

…inux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2023-02-07

1) Minor and trivial code Cleanups

2) Minor fixes for net-next

3) From Shay: dynamic FW trace strings update.

* tag 'mlx5-updates-2023-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
  net/mlx5: fw_tracer, Add support for unrecognized string
  net/mlx5: fw_tracer, Add support for strings DB update event
  net/mlx5: fw_tracer, allow 0 size string DBs
  net/mlx5: fw_tracer: Fix debug print
  net/mlx5: fs, Remove redundant assignment of size
  net/mlx5: fs_core, Remove redundant variable err
  net/mlx5: Fix memory leak in error flow of port set buffer
  net/mlx5e: Remove incorrect debugfs_create_dir NULL check in TLS
  net/mlx5e: Remove incorrect debugfs_create_dir NULL check in hairpin
  net/mlx5: fs, Remove redundant vport_number assignment
  net/mlx5e: Remove redundant code for handling vlan actions
  net/mlx5e: Don't listen to remove flows event
  net/mlx5: fw reset: Skip device ID check if PCI link up failed
  net/mlx5: Remove redundant health work lock
  mlx5: reduce stack usage in mlx5_setup_tc
====================

Link: https://lore.kernel.org/r/20230208003712.68386-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c

@@ -233,6 +233,8 @@ static int mlx5_fw_tracer_allocate_strings_db(struct mlx5_fw_tracer *tracer)
 	int i;
 
 	for (i = 0; i < num_string_db; i++) {
+		if (!string_db_size_out[i])
+			continue;
 		tracer->str_db.buffer[i] = kzalloc(string_db_size_out[i], GFP_KERNEL);
 		if (!tracer->str_db.buffer[i])
 			goto free_strings_db;
@@ -278,6 +280,8 @@ static void mlx5_tracer_read_strings_db(struct work_struct *work)
 	}
 
 	for (i = 0; i < num_string_db; i++) {
+		if (!tracer->str_db.size_out[i])
+			continue;
 		offset = 0;
 		MLX5_SET(mtrc_stdb, in, string_db_index, i);
 		num_of_reads = tracer->str_db.size_out[i] /
@@ -384,6 +388,8 @@ static struct tracer_string_format *mlx5_tracer_get_string(struct mlx5_fw_tracer
 	str_ptr = tracer_event->string_event.string_param;
 
 	for (i = 0; i < tracer->str_db.num_string_db; i++) {
+		if (!tracer->str_db.size_out[i])
+			continue;
 		if (str_ptr > tracer->str_db.base_address_out[i] &&
 		    str_ptr < tracer->str_db.base_address_out[i] +
 		    tracer->str_db.size_out[i]) {
@@ -459,6 +465,7 @@ static void poll_trace(struct mlx5_fw_tracer *tracer,
 
 	tracer_event->event_id = MLX5_GET(tracer_event, trace, event_id);
 	tracer_event->lost_event = MLX5_GET(tracer_event, trace, lost);
+	tracer_event->out = trace;
 
 	switch (tracer_event->event_id) {
 	case TRACER_EVENT_TYPE_TIMESTAMP:
@@ -581,6 +588,26 @@ void mlx5_tracer_print_trace(struct tracer_string_format *str_frmt,
 	mlx5_tracer_clean_message(str_frmt);
 }
 
+static int mlx5_tracer_handle_raw_string(struct mlx5_fw_tracer *tracer,
+					 struct tracer_event *tracer_event)
+{
+	struct tracer_string_format *cur_string;
+
+	cur_string = mlx5_tracer_message_insert(tracer, tracer_event);
+	if (!cur_string)
+		return -1;
+
+	cur_string->event_id = tracer_event->event_id;
+	cur_string->timestamp = tracer_event->string_event.timestamp;
+	cur_string->lost = tracer_event->lost_event;
+	cur_string->string = "0x%08x%08x";
+	cur_string->num_of_params = 2;
+	cur_string->params[0] = upper_32_bits(*tracer_event->out);
+	cur_string->params[1] = lower_32_bits(*tracer_event->out);
+	list_add_tail(&cur_string->list, &tracer->ready_strings_list);
+	return 0;
+}
+
 static int mlx5_tracer_handle_string_trace(struct mlx5_fw_tracer *tracer,
 					   struct tracer_event *tracer_event)
 {
@@ -589,7 +616,7 @@ static int mlx5_tracer_handle_string_trace(struct mlx5_fw_tracer *tracer,
 	if (tracer_event->string_event.tdsn == 0) {
 		cur_string = mlx5_tracer_get_string(tracer, tracer_event);
 		if (!cur_string)
-			return -1;
+			return mlx5_tracer_handle_raw_string(tracer, tracer_event);
 
 		cur_string->num_of_params = mlx5_tracer_get_num_of_params(cur_string->string);
 		cur_string->last_param_num = 0;
@@ -602,9 +629,9 @@ static int mlx5_tracer_handle_string_trace(struct mlx5_fw_tracer *tracer,
 	} else {
 		cur_string = mlx5_tracer_message_get(tracer, tracer_event);
 		if (!cur_string) {
-			pr_debug("%s Got string event for unknown string tdsm: %d\n",
+			pr_debug("%s Got string event for unknown string tmsn: %d\n",
 				 __func__, tracer_event->string_event.tmsn);
-			return -1;
+			return mlx5_tracer_handle_raw_string(tracer, tracer_event);
 		}
 		cur_string->last_param_num += 1;
 		if (cur_string->last_param_num > TRACER_MAX_PARAMS) {
@@ -930,6 +957,14 @@ int mlx5_fw_tracer_get_saved_traces_objects(struct mlx5_fw_tracer *tracer,
 	return err;
 }
 
+static void mlx5_fw_tracer_update_db(struct work_struct *work)
+{
+	struct mlx5_fw_tracer *tracer =
+			container_of(work, struct mlx5_fw_tracer, update_db_work);
+
+	mlx5_fw_tracer_reload(tracer);
+}
+
 /* Create software resources (Buffers, etc ..) */
 struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev)
 {
@@ -957,6 +992,8 @@ struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev)
 	INIT_WORK(&tracer->ownership_change_work, mlx5_fw_tracer_ownership_change);
 	INIT_WORK(&tracer->read_fw_strings_work, mlx5_tracer_read_strings_db);
 	INIT_WORK(&tracer->handle_traces_work, mlx5_fw_tracer_handle_traces);
+	INIT_WORK(&tracer->update_db_work, mlx5_fw_tracer_update_db);
+	mutex_init(&tracer->state_lock);
 
 
 	err = mlx5_query_mtrc_caps(tracer);
@@ -1003,11 +1040,15 @@ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer)
 	if (IS_ERR_OR_NULL(tracer))
 		return 0;
 
-	dev = tracer->dev;
-
 	if (!tracer->str_db.loaded)
 		queue_work(tracer->work_queue, &tracer->read_fw_strings_work);
 
+	mutex_lock(&tracer->state_lock);
+	if (test_and_set_bit(MLX5_TRACER_STATE_UP, &tracer->state))
+		goto unlock;
+
+	dev = tracer->dev;
+
 	err = mlx5_core_alloc_pd(dev, &tracer->buff.pdn);
 	if (err) {
 		mlx5_core_warn(dev, "FWTracer: Failed to allocate PD %d\n", err);
@@ -1028,6 +1069,8 @@ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer)
 		mlx5_core_warn(dev, "FWTracer: Failed to start tracer %d\n", err);
 		goto err_notifier_unregister;
 	}
+unlock:
+	mutex_unlock(&tracer->state_lock);
 	return 0;
 
 err_notifier_unregister:
@@ -1037,6 +1080,7 @@ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer)
 	mlx5_core_dealloc_pd(dev, tracer->buff.pdn);
 err_cancel_work:
 	cancel_work_sync(&tracer->read_fw_strings_work);
+	mutex_unlock(&tracer->state_lock);
 	return err;
 }
 
@@ -1046,17 +1090,27 @@ void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer)
 	if (IS_ERR_OR_NULL(tracer))
 		return;
 
+	mutex_lock(&tracer->state_lock);
+	if (!test_and_clear_bit(MLX5_TRACER_STATE_UP, &tracer->state))
+		goto unlock;
+
 	mlx5_core_dbg(tracer->dev, "FWTracer: Cleanup, is owner ? (%d)\n",
 		      tracer->owner);
 	mlx5_eq_notifier_unregister(tracer->dev, &tracer->nb);
 	cancel_work_sync(&tracer->ownership_change_work);
 	cancel_work_sync(&tracer->handle_traces_work);
+	/* It is valid to get here from update_db_work. Hence, don't wait for
+	 * update_db_work to finished.
+	 */
+	cancel_work(&tracer->update_db_work);
 
 	if (tracer->owner)
 		mlx5_fw_tracer_ownership_release(tracer);
 
 	mlx5_core_destroy_mkey(tracer->dev, tracer->buff.mkey);
 	mlx5_core_dealloc_pd(tracer->dev, tracer->buff.pdn);
+unlock:
+	mutex_unlock(&tracer->state_lock);
 }
 
 /* Free software resources (Buffers, etc ..) */
@@ -1073,6 +1127,7 @@ void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer)
 	mlx5_fw_tracer_clean_saved_traces_array(tracer);
 	mlx5_fw_tracer_free_strings_db(tracer);
 	mlx5_fw_tracer_destroy_log_buf(tracer);
+	mutex_destroy(&tracer->state_lock);
 	destroy_workqueue(tracer->work_queue);
 	kvfree(tracer);
 }
@@ -1082,6 +1137,8 @@ static int mlx5_fw_tracer_recreate_strings_db(struct mlx5_fw_tracer *tracer)
 	struct mlx5_core_dev *dev;
 	int err;
 
+	if (test_and_set_bit(MLX5_TRACER_RECREATE_DB, &tracer->state))
+		return 0;
 	cancel_work_sync(&tracer->read_fw_strings_work);
 	mlx5_fw_tracer_clean_ready_list(tracer);
 	mlx5_fw_tracer_clean_print_hash(tracer);
@@ -1092,17 +1149,18 @@ static int mlx5_fw_tracer_recreate_strings_db(struct mlx5_fw_tracer *tracer)
 	err = mlx5_query_mtrc_caps(tracer);
 	if (err) {
 		mlx5_core_dbg(dev, "FWTracer: Failed to query capabilities %d\n", err);
-		return err;
+		goto out;
 	}
 
 	err = mlx5_fw_tracer_allocate_strings_db(tracer);
 	if (err) {
 		mlx5_core_warn(dev, "FWTracer: Allocate strings DB failed %d\n", err);
-		return err;
+		goto out;
 	}
 	mlx5_fw_tracer_init_saved_traces_array(tracer);
-
-	return 0;
+out:
+	clear_bit(MLX5_TRACER_RECREATE_DB, &tracer->state);
+	return err;
 }
 
 int mlx5_fw_tracer_reload(struct mlx5_fw_tracer *tracer)
@@ -1142,6 +1200,9 @@ static int fw_tracer_event(struct notifier_block *nb, unsigned long action, void
 	case MLX5_TRACER_SUBTYPE_TRACES_AVAILABLE:
 		queue_work(tracer->work_queue, &tracer->handle_traces_work);
 		break;
+	case MLX5_TRACER_SUBTYPE_STRINGS_DB_UPDATE:
+		queue_work(tracer->work_queue, &tracer->update_db_work);
+		break;
 	default:
 		mlx5_core_dbg(dev, "FWTracer: Event with unrecognized subtype: sub_type %d\n",
 			      eqe->sub_type);

drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h

@@ -63,6 +63,11 @@ struct mlx5_fw_trace_data {
 	char msg[TRACE_STR_MSG];
 };
 
+enum mlx5_fw_tracer_state {
+	MLX5_TRACER_STATE_UP = BIT(0),
+	MLX5_TRACER_RECREATE_DB = BIT(1),
+};
+
 struct mlx5_fw_tracer {
 	struct mlx5_core_dev *dev;
 	struct mlx5_nb        nb;
@@ -104,6 +109,9 @@ struct mlx5_fw_tracer {
 	struct work_struct handle_traces_work;
 	struct hlist_head hash[MESSAGE_HASH_SIZE];
 	struct list_head ready_strings_list;
+	struct work_struct update_db_work;
+	struct mutex state_lock; /* Synchronize update work with reload flows */
+	unsigned long state;
 };
 
 struct tracer_string_format {
@@ -158,6 +166,7 @@ struct tracer_event {
 		struct tracer_string_event string_event;
 		struct tracer_timestamp_event timestamp_event;
 	};
+	u64 *out;
 };
 
 struct mlx5_ifc_tracer_event_bits {

drivers/net/ethernet/mellanox/mlx5/core/en/port_buffer.c

@@ -314,11 +314,11 @@ static int port_set_buffer(struct mlx5e_priv *priv,
 	err = port_update_shared_buffer(priv->mdev, current_headroom_size,
 					new_headroom_size);
 	if (err)
-		return err;
+		goto out;
 
 	err = port_update_pool_cfg(priv->mdev, port_buffer);
 	if (err)
-		return err;
+		goto out;
 
 	err = mlx5e_port_set_pbmc(mdev, in);
 out:

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/vlan.c

@@ -44,19 +44,17 @@ parse_tc_vlan_action(struct mlx5e_priv *priv,
 		return -EOPNOTSUPP;
 	}
 
+	if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, vlan_idx)) {
+		NL_SET_ERR_MSG_MOD(extack, "firmware vlan actions is not supported");
+		return -EOPNOTSUPP;
+	}
+
 	switch (act->id) {
 	case FLOW_ACTION_VLAN_POP:
-		if (vlan_idx) {
-			if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
-								 MLX5_FS_VLAN_DEPTH)) {
-				NL_SET_ERR_MSG_MOD(extack, "vlan pop action is not supported");
-				return -EOPNOTSUPP;
-			}
-
+		if (vlan_idx)
 			*action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP_2;
-		} else {
+		else
 			*action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
-		}
 		break;
 	case FLOW_ACTION_VLAN_PUSH:
 		attr->vlan_vid[vlan_idx] = act->vlan.vid;
@@ -65,25 +63,10 @@ parse_tc_vlan_action(struct mlx5e_priv *priv,
 		if (!attr->vlan_proto[vlan_idx])
 			attr->vlan_proto[vlan_idx] = htons(ETH_P_8021Q);
 
-		if (vlan_idx) {
-			if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
-								 MLX5_FS_VLAN_DEPTH)) {
-				NL_SET_ERR_MSG_MOD(extack,
-						   "vlan push action is not supported for vlan depth > 1");
-				return -EOPNOTSUPP;
-			}
-
+		if (vlan_idx)
 			*action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2;
-		} else {
-			if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, 1) &&
-			    (act->vlan.proto != htons(ETH_P_8021Q) ||
-			     act->vlan.prio)) {
-				NL_SET_ERR_MSG_MOD(extack, "vlan push action is not supported");
-				return -EOPNOTSUPP;
-			}
-
+		else
 			*action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
-		}
 		break;
 	case FLOW_ACTION_VLAN_POP_ETH:
 		parse_state->eth_pop = true;

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c

@@ -92,7 +92,6 @@ static void mlx5e_ipsec_packet_setup(void *obj, u32 pdn,
 		MLX5_SET(ipsec_aso, aso_ctx, remove_flow_pkt_cnt,
 			 lower_32_bits(attrs->hard_packet_limit));
 		MLX5_SET(ipsec_aso, aso_ctx, hard_lft_arm, 1);
-		MLX5_SET(ipsec_aso, aso_ctx, remove_flow_enable, 1);
 	}
 
 	if (attrs->soft_packet_limit != XFRM_INF) {
@@ -329,8 +328,7 @@ static void mlx5e_ipsec_handle_event(struct work_struct *_work)
 
 	if (attrs->soft_packet_limit != XFRM_INF)
 		if (!MLX5_GET(ipsec_aso, aso->ctx, soft_lft_arm) ||
-		    !MLX5_GET(ipsec_aso, aso->ctx, hard_lft_arm) ||
-		    !MLX5_GET(ipsec_aso, aso->ctx, remove_flow_enable))
+		    !MLX5_GET(ipsec_aso, aso->ctx, hard_lft_arm))
 			xfrm_state_check_expire(sa_entry->x);
 
 unlock:

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c

@@ -899,8 +899,6 @@ static void mlx5e_tls_tx_debugfs_init(struct mlx5e_tls *tls,
 		return;
 
 	tls->debugfs.dfs_tx = debugfs_create_dir("tx", dfs_root);
-	if (!tls->debugfs.dfs_tx)
-		return;
 
 	debugfs_create_size_t("pool_size", 0400, tls->debugfs.dfs_tx,
 			      &tls->tx_pool->size);

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

@@ -3002,32 +3002,37 @@ int mlx5e_safe_switch_params(struct mlx5e_priv *priv,
 			     mlx5e_fp_preactivate preactivate,
 			     void *context, bool reset)
 {
-	struct mlx5e_channels new_chs = {};
+	struct mlx5e_channels *new_chs;
 	int err;
 
 	reset &= test_bit(MLX5E_STATE_OPENED, &priv->state);
 	if (!reset)
 		return mlx5e_switch_priv_params(priv, params, preactivate, context);
 
-	new_chs.params = *params;
+	new_chs = kzalloc(sizeof(*new_chs), GFP_KERNEL);
+	if (!new_chs)
+		return -ENOMEM;
+	new_chs->params = *params;
 
-	mlx5e_selq_prepare_params(&priv->selq, &new_chs.params);
+	mlx5e_selq_prepare_params(&priv->selq, &new_chs->params);
 
-	err = mlx5e_open_channels(priv, &new_chs);
+	err = mlx5e_open_channels(priv, new_chs);
 	if (err)
 		goto err_cancel_selq;
 
-	err = mlx5e_switch_priv_channels(priv, &new_chs, preactivate, context);
+	err = mlx5e_switch_priv_channels(priv, new_chs, preactivate, context);
 	if (err)
 		goto err_close;
 
+	kfree(new_chs);
 	return 0;
 
 err_close:
-	mlx5e_close_channels(&new_chs);
+	mlx5e_close_channels(new_chs);
 
 err_cancel_selq:
 	mlx5e_selq_cancel(&priv->selq);
+	kfree(new_chs);
 	return err;
 }