blob: ae63cf72a953ca0f733b7b9e8cfb61dc9012da3c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/******************************************************************************
2 * vlanproc.c VLAN Module. /proc filesystem interface.
3 *
4 * This module is completely hardware-independent and provides
5 * access to the router using Linux /proc filesystem.
6 *
7 * Author: Ben Greear, <greearb@candelatech.com> coppied from wanproc.c
8 * by: Gene Kozin <genek@compuserve.com>
9 *
10 * Copyright: (c) 1998 Ben Greear
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
16 * ============================================================================
17 * Jan 20, 1998 Ben Greear Initial Version
18 *****************************************************************************/
19
Joe Perchesafab2d22011-05-26 10:58:31 +000020#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/module.h>
Patrick McHardy61362762008-07-14 22:51:55 -070023#include <linux/errno.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <linux/kernel.h>
Patrick McHardy61362762008-07-14 22:51:55 -070025#include <linux/string.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <linux/proc_fs.h>
27#include <linux/seq_file.h>
28#include <linux/fs.h>
29#include <linux/netdevice.h>
30#include <linux/if_vlan.h>
Eric W. Biederman457c4cb2007-09-12 12:01:34 +020031#include <net/net_namespace.h>
Pavel Emelyanova59a8c12008-04-16 00:51:51 -070032#include <net/netns/generic.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include "vlanproc.h"
34#include "vlan.h"
35
36/****** Function Prototypes *************************************************/
37
38/* Methods for preparing data for reading proc entries */
39static int vlan_seq_show(struct seq_file *seq, void *v);
40static void *vlan_seq_start(struct seq_file *seq, loff_t *pos);
41static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos);
42static void vlan_seq_stop(struct seq_file *seq, void *);
43static int vlandev_seq_show(struct seq_file *seq, void *v);
44
45/*
46 * Global Data
47 */
48
49
50/*
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090051 * Names of the proc directory entries
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 */
53
54static const char name_root[] = "vlan";
55static const char name_conf[] = "config";
56
57/*
58 * Structures for interfacing with the /proc filesystem.
Lucas De Marchi25985ed2011-03-30 22:57:33 -030059 * VLAN creates its own directory /proc/net/vlan with the following
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 * entries:
61 * config device status/configuration
62 * <device> entry for each device
63 */
64
65/*
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +090066 * Generic /proc/net/vlan/<file> file and inode operations
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 */
68
Philippe De Muyter56b3d972007-07-10 23:07:31 -070069static const struct seq_operations vlan_seq_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 .start = vlan_seq_start,
71 .next = vlan_seq_next,
72 .stop = vlan_seq_stop,
73 .show = vlan_seq_show,
74};
75
76static int vlan_seq_open(struct inode *inode, struct file *file)
77{
Pavel Emelyanov80de2d92008-04-16 00:52:24 -070078 return seq_open_net(inode, file, &vlan_seq_ops,
79 sizeof(struct seq_net_private));
Linus Torvalds1da177e2005-04-16 15:20:36 -070080}
81
Arjan van de Ven9a321442007-02-12 00:55:35 -080082static const struct file_operations vlan_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 .owner = THIS_MODULE,
84 .open = vlan_seq_open,
85 .read = seq_read,
86 .llseek = seq_lseek,
Pavel Emelyanov80de2d92008-04-16 00:52:24 -070087 .release = seq_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -070088};
89
90/*
91 * /proc/net/vlan/<device> file and inode operations
92 */
93
94static int vlandev_seq_open(struct inode *inode, struct file *file)
95{
Al Virod9dda782013-03-31 18:16:14 -040096 return single_open(file, vlandev_seq_show, PDE_DATA(inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -070097}
98
Arjan van de Ven9a321442007-02-12 00:55:35 -080099static const struct file_operations vlandev_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 .owner = THIS_MODULE,
101 .open = vlandev_seq_open,
102 .read = seq_read,
103 .llseek = seq_lseek,
104 .release = single_release,
105};
106
107/*
Anatol Pomozov4907cb72012-09-01 10:31:09 -0700108 * Proc filesystem directory entries.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 */
110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111/* Strings */
Jan Engelhardt36cbd3d2009-08-05 10:42:58 -0700112static const char *const vlan_name_type_str[VLAN_NAME_TYPE_HIGHEST] = {
Patrick McHardy2029cc22008-01-21 00:26:41 -0800113 [VLAN_NAME_TYPE_RAW_PLUS_VID] = "VLAN_NAME_TYPE_RAW_PLUS_VID",
114 [VLAN_NAME_TYPE_PLUS_VID_NO_PAD] = "VLAN_NAME_TYPE_PLUS_VID_NO_PAD",
115 [VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD] = "VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD",
116 [VLAN_NAME_TYPE_PLUS_VID] = "VLAN_NAME_TYPE_PLUS_VID",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117};
118/*
119 * Interface functions
120 */
121
122/*
123 * Clean up /proc/net/vlan entries
124 */
125
Pavel Emelyanovcd1c7012008-04-16 00:51:12 -0700126void vlan_proc_cleanup(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127{
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700128 struct vlan_net *vn = net_generic(net, vlan_net_id);
Pavel Emelyanovcd1c7012008-04-16 00:51:12 -0700129
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700130 if (vn->proc_vlan_conf)
131 remove_proc_entry(name_conf, vn->proc_vlan_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700133 if (vn->proc_vlan_dir)
Gao fengece31ff2013-02-18 01:34:56 +0000134 remove_proc_entry(name_root, net->proc_net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
136 /* Dynamically added entries should be cleaned up as their vlan_device
137 * is removed, so we should not have to take care of it here...
138 */
139}
140
141/*
142 * Create /proc/net/vlan entries
143 */
144
Alexey Dobriyan2c8c1e72010-01-17 03:35:32 +0000145int __net_init vlan_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146{
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700147 struct vlan_net *vn = net_generic(net, vlan_net_id);
Pavel Emelyanovcd1c7012008-04-16 00:51:12 -0700148
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700149 vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
150 if (!vn->proc_vlan_dir)
Patrick McHardy69ab4b72008-01-21 00:25:15 -0800151 goto err;
152
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700153 vn->proc_vlan_conf = proc_create(name_conf, S_IFREG|S_IRUSR|S_IWUSR,
154 vn->proc_vlan_dir, &vlan_fops);
155 if (!vn->proc_vlan_conf)
Patrick McHardy69ab4b72008-01-21 00:25:15 -0800156 goto err;
Patrick McHardy69ab4b72008-01-21 00:25:15 -0800157 return 0;
158
159err:
Joe Perchesafab2d22011-05-26 10:58:31 +0000160 pr_err("can't create entry in proc filesystem!\n");
Pavel Emelyanovcd1c7012008-04-16 00:51:12 -0700161 vlan_proc_cleanup(net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 return -ENOBUFS;
163}
164
165/*
166 * Add directory entry for VLAN device.
167 */
168
Patrick McHardy2029cc22008-01-21 00:26:41 -0800169int vlan_proc_add_dev(struct net_device *vlandev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170{
Jiri Pirko7da82c02011-12-08 04:11:15 +0000171 struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
Pavel Emelyanova59a8c12008-04-16 00:51:51 -0700172 struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
WANG Cong9c5ff242014-07-25 15:25:10 -0700174 if (!strcmp(vlandev->name, name_conf))
175 return -EINVAL;
Jiri Pirko7da82c02011-12-08 04:11:15 +0000176 vlan->dent =
Denis V. Lunev1d3faa32008-05-02 04:09:11 -0700177 proc_create_data(vlandev->name, S_IFREG|S_IRUSR|S_IWUSR,
178 vn->proc_vlan_dir, &vlandev_fops, vlandev);
Jiri Pirko7da82c02011-12-08 04:11:15 +0000179 if (!vlan->dent)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 return -ENOBUFS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 return 0;
182}
183
184/*
185 * Delete directory entry for VLAN device.
186 */
187int vlan_proc_rem_dev(struct net_device *vlandev)
188{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 /** NOTE: This will consume the memory pointed to by dent, it seems. */
David Howellsa8ca16e2013-04-12 17:27:28 +0100190 proc_remove(vlan_dev_priv(vlandev)->dent);
191 vlan_dev_priv(vlandev)->dent = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 return 0;
193}
194
195/****** Proc filesystem entry points ****************************************/
196
197/*
198 * The following few functions build the content of /proc/net/vlan/config
199 */
200
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900201/* start read of /proc/net/vlan/config */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202static void *vlan_seq_start(struct seq_file *seq, loff_t *pos)
stephen hemminger9e067592009-11-10 07:54:48 +0000203 __acquires(rcu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204{
205 struct net_device *dev;
Pavel Emelyanov80de2d92008-04-16 00:52:24 -0700206 struct net *net = seq_file_net(seq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 loff_t i = 1;
208
stephen hemminger9e067592009-11-10 07:54:48 +0000209 rcu_read_lock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 if (*pos == 0)
211 return SEQ_START_TOKEN;
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900212
stephen hemminger9e067592009-11-10 07:54:48 +0000213 for_each_netdev_rcu(net, dev) {
Pavel Emelianov7562f872007-05-03 15:13:45 -0700214 if (!is_vlan_dev(dev))
215 continue;
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900216
Pavel Emelianov7562f872007-05-03 15:13:45 -0700217 if (i++ == *pos)
218 return dev;
219 }
220
221 return NULL;
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900222}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223
224static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos)
225{
Pavel Emelianov7562f872007-05-03 15:13:45 -0700226 struct net_device *dev;
Pavel Emelyanov80de2d92008-04-16 00:52:24 -0700227 struct net *net = seq_file_net(seq);
Pavel Emelianov7562f872007-05-03 15:13:45 -0700228
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 ++*pos;
230
Joe Perchesea110732011-06-13 16:21:26 +0000231 dev = v;
Pavel Emelianov7562f872007-05-03 15:13:45 -0700232 if (v == SEQ_START_TOKEN)
Pavel Emelyanov80de2d92008-04-16 00:52:24 -0700233 dev = net_device_entry(&net->dev_base_head);
Pavel Emelianov7562f872007-05-03 15:13:45 -0700234
stephen hemminger9e067592009-11-10 07:54:48 +0000235 for_each_netdev_continue_rcu(net, dev) {
Pavel Emelianov7562f872007-05-03 15:13:45 -0700236 if (!is_vlan_dev(dev))
237 continue;
238
239 return dev;
240 }
241
242 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243}
244
245static void vlan_seq_stop(struct seq_file *seq, void *v)
stephen hemminger9e067592009-11-10 07:54:48 +0000246 __releases(rcu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247{
stephen hemminger9e067592009-11-10 07:54:48 +0000248 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249}
250
251static int vlan_seq_show(struct seq_file *seq, void *v)
252{
Pavel Emelyanov7a17a2f2008-04-16 00:54:39 -0700253 struct net *net = seq_file_net(seq);
254 struct vlan_net *vn = net_generic(net, vlan_net_id);
255
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 if (v == SEQ_START_TOKEN) {
257 const char *nmtype = NULL;
258
259 seq_puts(seq, "VLAN Dev name | VLAN ID\n");
260
Pavel Emelyanov7a17a2f2008-04-16 00:54:39 -0700261 if (vn->name_type < ARRAY_SIZE(vlan_name_type_str))
262 nmtype = vlan_name_type_str[vn->name_type];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900264 seq_printf(seq, "Name-Type: %s\n",
Patrick McHardy2029cc22008-01-21 00:26:41 -0800265 nmtype ? nmtype : "UNKNOWN");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 } else {
267 const struct net_device *vlandev = v;
Jiri Pirko7da82c02011-12-08 04:11:15 +0000268 const struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269
YOSHIFUJI Hideaki122952f2007-02-09 23:24:25 +0900270 seq_printf(seq, "%-15s| %d | %s\n", vlandev->name,
Jiri Pirko7da82c02011-12-08 04:11:15 +0000271 vlan->vlan_id, vlan->real_dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 }
273 return 0;
274}
275
276static int vlandev_seq_show(struct seq_file *seq, void *offset)
277{
278 struct net_device *vlandev = (struct net_device *) seq->private;
Jiri Pirko7da82c02011-12-08 04:11:15 +0000279 const struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
Eric Dumazet28172732010-07-07 14:58:56 -0700280 struct rtnl_link_stats64 temp;
Ben Hutchingsbe1f3c22010-06-08 07:19:54 +0000281 const struct rtnl_link_stats64 *stats;
Ben Hutchingsbe1f3c22010-06-08 07:19:54 +0000282 static const char fmt64[] = "%30s %12llu\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 int i;
284
Joonwoo Park26a25232008-07-08 03:22:16 -0700285 if (!is_vlan_dev(vlandev))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 return 0;
287
Eric Dumazet28172732010-07-07 14:58:56 -0700288 stats = dev_get_stats(vlandev, &temp);
Patrick McHardy2029cc22008-01-21 00:26:41 -0800289 seq_printf(seq,
290 "%s VID: %d REORDER_HDR: %i dev->priv_flags: %hx\n",
Jiri Pirko7da82c02011-12-08 04:11:15 +0000291 vlandev->name, vlan->vlan_id,
292 (int)(vlan->flags & 1), vlandev->priv_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293
Ben Hutchingsbe1f3c22010-06-08 07:19:54 +0000294 seq_printf(seq, fmt64, "total frames received", stats->rx_packets);
295 seq_printf(seq, fmt64, "total bytes received", stats->rx_bytes);
296 seq_printf(seq, fmt64, "Broadcast/Multicast Rcvd", stats->multicast);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 seq_puts(seq, "\n");
Ben Hutchingsbe1f3c22010-06-08 07:19:54 +0000298 seq_printf(seq, fmt64, "total frames transmitted", stats->tx_packets);
299 seq_printf(seq, fmt64, "total bytes transmitted", stats->tx_bytes);
Jiri Pirko7da82c02011-12-08 04:11:15 +0000300 seq_printf(seq, "Device: %s", vlan->real_dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 /* now show all PRIORITY mappings relating to this VLAN */
Patrick McHardy2029cc22008-01-21 00:26:41 -0800302 seq_printf(seq, "\nINGRESS priority mappings: "
303 "0:%u 1:%u 2:%u 3:%u 4:%u 5:%u 6:%u 7:%u\n",
Jiri Pirko7da82c02011-12-08 04:11:15 +0000304 vlan->ingress_priority_map[0],
305 vlan->ingress_priority_map[1],
306 vlan->ingress_priority_map[2],
307 vlan->ingress_priority_map[3],
308 vlan->ingress_priority_map[4],
309 vlan->ingress_priority_map[5],
310 vlan->ingress_priority_map[6],
311 vlan->ingress_priority_map[7]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
Ferenc Wagner309f7962008-11-10 13:37:40 -0800313 seq_printf(seq, " EGRESS priority mappings: ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 for (i = 0; i < 16; i++) {
315 const struct vlan_priority_tci_mapping *mp
Jiri Pirko7da82c02011-12-08 04:11:15 +0000316 = vlan->egress_priority_map[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 while (mp) {
Patrick McHardy734423c2007-06-13 12:07:07 -0700318 seq_printf(seq, "%u:%hu ",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 mp->priority, ((mp->vlan_qos >> 13) & 0x7));
320 mp = mp->next;
321 }
322 }
323 seq_puts(seq, "\n");
324
325 return 0;
326}