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
8 static void *mlx5_esw_bridge_debugfs_start(struct seq_file *seq, loff_t *pos);
9 static void *mlx5_esw_bridge_debugfs_next(struct seq_file *seq, void *v, loff_t *pos);
10 static void mlx5_esw_bridge_debugfs_stop(struct seq_file *seq, void *v);
11 static int mlx5_esw_bridge_debugfs_show(struct seq_file *seq, void *v);
12
13 static 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 };
19 DEFINE_SEQ_ATTRIBUTE(mlx5_esw_bridge_debugfs);
20
mlx5_esw_bridge_debugfs_start(struct seq_file * seq,loff_t * pos)21 static 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
mlx5_esw_bridge_debugfs_next(struct seq_file * seq,void * v,loff_t * pos)29 static 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
mlx5_esw_bridge_debugfs_stop(struct seq_file * seq,void * v)36 static void mlx5_esw_bridge_debugfs_stop(struct seq_file *seq, void *v)
37 {
38 rtnl_unlock();
39 }
40
mlx5_esw_bridge_debugfs_show(struct seq_file * seq,void * v)41 static 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
mlx5_esw_bridge_debugfs_init(struct net_device * br_netdev,struct mlx5_esw_bridge * bridge)60 void 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
mlx5_esw_bridge_debugfs_cleanup(struct mlx5_esw_bridge * bridge)71 void 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
mlx5_esw_bridge_debugfs_offloads_init(struct mlx5_esw_bridge_offloads * br_offloads)77 void 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
mlx5_esw_bridge_debugfs_offloads_cleanup(struct mlx5_esw_bridge_offloads * br_offloads)85 void 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