1// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2/* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
3
4#include <linux/debugfs.h>
5#include "bridge.h"
6#include "bridge_priv.h"
7
8static void *mlx5_esw_bridge_debugfs_start(struct seq_file *seq, loff_t *pos);
9static void *mlx5_esw_bridge_debugfs_next(struct seq_file *seq, void *v, loff_t *pos);
10static void mlx5_esw_bridge_debugfs_stop(struct seq_file *seq, void *v);
11static int mlx5_esw_bridge_debugfs_show(struct seq_file *seq, void *v);
12
13static const struct seq_operations mlx5_esw_bridge_debugfs_sops = {
14	.start	= mlx5_esw_bridge_debugfs_start,
15	.next	= mlx5_esw_bridge_debugfs_next,
16	.stop	= mlx5_esw_bridge_debugfs_stop,
17	.show	= mlx5_esw_bridge_debugfs_show,
18};
19DEFINE_SEQ_ATTRIBUTE(mlx5_esw_bridge_debugfs);
20
21static void *mlx5_esw_bridge_debugfs_start(struct seq_file *seq, loff_t *pos)
22{
23	struct mlx5_esw_bridge *bridge = seq->private;
24
25	rtnl_lock();
26	return *pos ? seq_list_start(&bridge->fdb_list, *pos - 1) : SEQ_START_TOKEN;
27}
28
29static void *mlx5_esw_bridge_debugfs_next(struct seq_file *seq, void *v, loff_t *pos)
30{
31	struct mlx5_esw_bridge *bridge = seq->private;
32
33	return seq_list_next(v == SEQ_START_TOKEN ? &bridge->fdb_list : v, &bridge->fdb_list, pos);
34}
35
36static void mlx5_esw_bridge_debugfs_stop(struct seq_file *seq, void *v)
37{
38	rtnl_unlock();
39}
40
41static int mlx5_esw_bridge_debugfs_show(struct seq_file *seq, void *v)
42{
43	struct mlx5_esw_bridge_fdb_entry *entry;
44	u64 packets, bytes, lastuse;
45
46	if (v == SEQ_START_TOKEN) {
47		seq_printf(seq, "%-16s %-17s %4s %20s %20s %20s %5s\n",
48			   "DEV", "MAC", "VLAN", "PACKETS", "BYTES", "LASTUSE", "FLAGS");
49		return 0;
50	}
51
52	entry = list_entry(v, struct mlx5_esw_bridge_fdb_entry, list);
53	mlx5_fc_query_cached_raw(entry->ingress_counter, &bytes, &packets, &lastuse);
54	seq_printf(seq, "%-16s %-17pM %4d %20llu %20llu %20llu %#5x\n",
55		   entry->dev->name, entry->key.addr, entry->key.vid, packets, bytes, lastuse,
56		   entry->flags);
57	return 0;
58}
59
60void mlx5_esw_bridge_debugfs_init(struct net_device *br_netdev, struct mlx5_esw_bridge *bridge)
61{
62	if (!bridge->br_offloads->debugfs_root)
63		return;
64
65	bridge->debugfs_dir = debugfs_create_dir(br_netdev->name,
66						 bridge->br_offloads->debugfs_root);
67	debugfs_create_file("fdb", 0400, bridge->debugfs_dir, bridge,
68			    &mlx5_esw_bridge_debugfs_fops);
69}
70
71void mlx5_esw_bridge_debugfs_cleanup(struct mlx5_esw_bridge *bridge)
72{
73	debugfs_remove_recursive(bridge->debugfs_dir);
74	bridge->debugfs_dir = NULL;
75}
76
77void mlx5_esw_bridge_debugfs_offloads_init(struct mlx5_esw_bridge_offloads *br_offloads)
78{
79	if (!br_offloads->esw->debugfs_root)
80		return;
81
82	br_offloads->debugfs_root = debugfs_create_dir("bridge", br_offloads->esw->debugfs_root);
83}
84
85void mlx5_esw_bridge_debugfs_offloads_cleanup(struct mlx5_esw_bridge_offloads *br_offloads)
86{
87	debugfs_remove_recursive(br_offloads->debugfs_root);
88	br_offloads->debugfs_root = NULL;
89}
90