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2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390 
 kernel/drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c
....@@ -1,35 +1,5 @@
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-/*
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- * Copyright (C) 2015-2017 Netronome Systems, Inc.
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- *
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- * This software is dual licensed under the GNU General License Version 2,
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- * June 1991 as shown in the file COPYING in the top-level directory of this
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- * source tree or the BSD 2-Clause License provided below.  You have the
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- * option to license this software under the complete terms of either license.
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- *
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- * The BSD 2-Clause License:
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- *
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- *     Redistribution and use in source and binary forms, with or
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- *     without modification, are permitted provided that the following
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- *     conditions are met:
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- *
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- *      1. Redistributions of source code must retain the above
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- *         copyright notice, this list of conditions and the following
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- *         disclaimer.
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- *
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- *      2. Redistributions in binary form must reproduce the above
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- *         copyright notice, this list of conditions and the following
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- *         disclaimer in the documentation and/or other materials
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- *         provided with the distribution.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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- * SOFTWARE.
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- */
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+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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+/* Copyright (C) 2015-2018 Netronome Systems, Inc. */
333 #include <linux/debugfs.h>
344 #include <linux/module.h>
355 #include <linux/rtnetlink.h>
....@@ -38,7 +8,7 @@
388 
399 static struct dentry *nfp_dir;
4010 
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-static int nfp_net_debugfs_rx_q_read(struct seq_file *file, void *data)
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+static int nfp_rx_q_show(struct seq_file *file, void *data)
4212 {
4313 	struct nfp_net_r_vector *r_vec = file->private;
4414 	struct nfp_net_rx_ring *rx_ring;
....@@ -95,31 +65,12 @@
9565 	rtnl_unlock();
9666 	return 0;
9767 }
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+DEFINE_SHOW_ATTRIBUTE(nfp_rx_q);
9869 
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-static int nfp_net_debugfs_rx_q_open(struct inode *inode, struct file *f)
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-{
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-	return single_open(f, nfp_net_debugfs_rx_q_read, inode->i_private);
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-}
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+static int nfp_tx_q_show(struct seq_file *file, void *data);
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+DEFINE_SHOW_ATTRIBUTE(nfp_tx_q);
10372 
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-static const struct file_operations nfp_rx_q_fops = {
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-	.owner = THIS_MODULE,
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-	.open = nfp_net_debugfs_rx_q_open,
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-	.release = single_release,
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-	.read = seq_read,
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-	.llseek = seq_lseek
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-};
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-
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-static int nfp_net_debugfs_tx_q_open(struct inode *inode, struct file *f);
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-
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-static const struct file_operations nfp_tx_q_fops = {
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-	.owner = THIS_MODULE,
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-	.open = nfp_net_debugfs_tx_q_open,
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-	.release = single_release,
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-	.read = seq_read,
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-	.llseek = seq_lseek
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-};
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-
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-static int nfp_net_debugfs_tx_q_read(struct seq_file *file, void *data)
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+static int nfp_tx_q_show(struct seq_file *file, void *data)
12374 {
12475 	struct nfp_net_r_vector *r_vec = file->private;
12576 	struct nfp_net_tx_ring *tx_ring;
....@@ -188,18 +139,11 @@
188139 	return 0;
189140 }
190141 
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-static int nfp_net_debugfs_tx_q_open(struct inode *inode, struct file *f)
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+static int nfp_xdp_q_show(struct seq_file *file, void *data)
192143 {
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-	return single_open(f, nfp_net_debugfs_tx_q_read, inode->i_private);
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+	return nfp_tx_q_show(file, data);
194145 }
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-
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-static const struct file_operations nfp_xdp_q_fops = {
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-	.owner = THIS_MODULE,
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-	.open = nfp_net_debugfs_tx_q_open,
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-	.release = single_release,
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-	.read = seq_read,
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-	.llseek = seq_lseek
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-};
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+DEFINE_SHOW_ATTRIBUTE(nfp_xdp_q);
203147 
204148 void nfp_net_debugfs_vnic_add(struct nfp_net *nn, struct dentry *ddir)
205149 {
....@@ -215,19 +159,13 @@
215159 	else
216160 		strcpy(name, "ctrl-vnic");
217161 	nn->debugfs_dir = debugfs_create_dir(name, ddir);
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-	if (IS_ERR_OR_NULL(nn->debugfs_dir))
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-		return;
220162 
221163 	/* Create queue debugging sub-tree */
222164 	queues = debugfs_create_dir("queue", nn->debugfs_dir);
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-	if (IS_ERR_OR_NULL(queues))
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-		return;
225165 
226166 	rx = debugfs_create_dir("rx", queues);
227167 	tx = debugfs_create_dir("tx", queues);
228168 	xdp = debugfs_create_dir("xdp", queues);
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-	if (IS_ERR_OR_NULL(rx) || IS_ERR_OR_NULL(tx) || IS_ERR_OR_NULL(xdp))
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-		return;
231169 
232170 	for (i = 0; i < min(nn->max_rx_rings, nn->max_r_vecs); i++) {
233171 		sprintf(name, "%d", i);
....@@ -246,16 +184,7 @@
246184 
247185 struct dentry *nfp_net_debugfs_device_add(struct pci_dev *pdev)
248186 {
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-	struct dentry *dev_dir;
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-
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-	if (IS_ERR_OR_NULL(nfp_dir))
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-		return NULL;
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-
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-	dev_dir = debugfs_create_dir(pci_name(pdev), nfp_dir);
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-	if (IS_ERR_OR_NULL(dev_dir))
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-		return NULL;
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-
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-	return dev_dir;
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+	return debugfs_create_dir(pci_name(pdev), nfp_dir);
259188 }
260189 
261190 void nfp_net_debugfs_dir_clean(struct dentry **dir)