[mirror_ubuntu-artful-kernel.git] / net / 8021q / vlanproc.c

/******************************************************************************
 * vlanproc.c	VLAN Module. /proc filesystem interface.
 *
 *		This module is completely hardware-independent and provides
 *		access to the router using Linux /proc filesystem.
 *
 * Author:	Ben Greear, <greearb@candelatech.com> coppied from wanproc.c
 *               by: Gene Kozin	<genek@compuserve.com>
 *
 * Copyright:	(c) 1998 Ben Greear
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 * ============================================================================
 * Jan 20, 1998        Ben Greear     Initial Version
 *****************************************************************************/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/fs.h>
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include "vlanproc.h"
#include "vlan.h"

/****** Function Prototypes *************************************************/

/* Methods for preparing data for reading proc entries */
static int vlan_seq_show(struct seq_file *seq, void *v);
static void *vlan_seq_start(struct seq_file *seq, loff_t *pos);
static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos);
static void vlan_seq_stop(struct seq_file *seq, void *);
static int vlandev_seq_show(struct seq_file *seq, void *v);

/*
 *	Global Data
 */


/*
 *	Names of the proc directory entries
 */

static const char name_root[]	 = "vlan";
static const char name_conf[]	 = "config";

/*
 *	Structures for interfacing with the /proc filesystem.
 *	VLAN creates its own directory /proc/net/vlan with the following
 *	entries:
 *	config		device status/configuration
 *	<device>	entry for each  device
 */

/*
 *	Generic /proc/net/vlan/<file> file and inode operations
 */

static const struct seq_operations vlan_seq_ops = {
	.start = vlan_seq_start,
	.next = vlan_seq_next,
	.stop = vlan_seq_stop,
	.show = vlan_seq_show,
};

static int vlan_seq_open(struct inode *inode, struct file *file)
{
	return seq_open_net(inode, file, &vlan_seq_ops,
			sizeof(struct seq_net_private));
}

static const struct file_operations vlan_fops = {
	.owner	 = THIS_MODULE,
	.open    = vlan_seq_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release_net,
};

/*
 *	/proc/net/vlan/<device> file and inode operations
 */

static int vlandev_seq_open(struct inode *inode, struct file *file)
{
	return single_open(file, vlandev_seq_show, PDE_DATA(inode));
}

static const struct file_operations vlandev_fops = {
	.owner = THIS_MODULE,
	.open    = vlandev_seq_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = single_release,
};

/*
 * Proc filesystem directory entries.
 */

/* Strings */
static const char *const vlan_name_type_str[VLAN_NAME_TYPE_HIGHEST] = {
    [VLAN_NAME_TYPE_RAW_PLUS_VID]        = "VLAN_NAME_TYPE_RAW_PLUS_VID",
    [VLAN_NAME_TYPE_PLUS_VID_NO_PAD]	 = "VLAN_NAME_TYPE_PLUS_VID_NO_PAD",
    [VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD] = "VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD",
    [VLAN_NAME_TYPE_PLUS_VID]		 = "VLAN_NAME_TYPE_PLUS_VID",
};
/*
 *	Interface functions
 */

/*
 *	Clean up /proc/net/vlan entries
 */

void vlan_proc_cleanup(struct net *net)
{
	struct vlan_net *vn = net_generic(net, vlan_net_id);

	if (vn->proc_vlan_conf)
		remove_proc_entry(name_conf, vn->proc_vlan_dir);

	if (vn->proc_vlan_dir)
		remove_proc_entry(name_root, net->proc_net);

	/* Dynamically added entries should be cleaned up as their vlan_device
	 * is removed, so we should not have to take care of it here...
	 */
}

/*
 *	Create /proc/net/vlan entries
 */

int __net_init vlan_proc_init(struct net *net)
{
	struct vlan_net *vn = net_generic(net, vlan_net_id);

	vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
	if (!vn->proc_vlan_dir)
		goto err;

	vn->proc_vlan_conf = proc_create(name_conf, S_IFREG|S_IRUSR|S_IWUSR,
				     vn->proc_vlan_dir, &vlan_fops);
	if (!vn->proc_vlan_conf)
		goto err;
	return 0;

err:
	pr_err("can't create entry in proc filesystem!\n");
	vlan_proc_cleanup(net);
	return -ENOBUFS;
}

/*
 *	Add directory entry for VLAN device.
 */

int vlan_proc_add_dev(struct net_device *vlandev)
{
	struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
	struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);

	if (!strcmp(vlandev->name, name_conf))
		return -EINVAL;
	vlan->dent =
		proc_create_data(vlandev->name, S_IFREG|S_IRUSR|S_IWUSR,
				 vn->proc_vlan_dir, &vlandev_fops, vlandev);
	if (!vlan->dent)
		return -ENOBUFS;
	return 0;
}

/*
 *	Delete directory entry for VLAN device.
 */
void vlan_proc_rem_dev(struct net_device *vlandev)
{
	/** NOTE:  This will consume the memory pointed to by dent, it seems. */
	proc_remove(vlan_dev_priv(vlandev)->dent);
	vlan_dev_priv(vlandev)->dent = NULL;
}

/****** Proc filesystem entry points ****************************************/

/*
 * The following few functions build the content of /proc/net/vlan/config
 */

/* start read of /proc/net/vlan/config */
static void *vlan_seq_start(struct seq_file *seq, loff_t *pos)
	__acquires(rcu)
{
	struct net_device *dev;
	struct net *net = seq_file_net(seq);
	loff_t i = 1;

	rcu_read_lock();
	if (*pos == 0)
		return SEQ_START_TOKEN;

	for_each_netdev_rcu(net, dev) {
		if (!is_vlan_dev(dev))
			continue;

		if (i++ == *pos)
			return dev;
	}

	return  NULL;
}

static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct net_device *dev;
	struct net *net = seq_file_net(seq);

	++*pos;

	dev = v;
	if (v == SEQ_START_TOKEN)
		dev = net_device_entry(&net->dev_base_head);

	for_each_netdev_continue_rcu(net, dev) {
		if (!is_vlan_dev(dev))
			continue;

		return dev;
	}

	return NULL;
}

static void vlan_seq_stop(struct seq_file *seq, void *v)
	__releases(rcu)
{
	rcu_read_unlock();
}

static int vlan_seq_show(struct seq_file *seq, void *v)
{
	struct net *net = seq_file_net(seq);
	struct vlan_net *vn = net_generic(net, vlan_net_id);

	if (v == SEQ_START_TOKEN) {
		const char *nmtype = NULL;

		seq_puts(seq, "VLAN Dev name	 | VLAN ID\n");

		if (vn->name_type < ARRAY_SIZE(vlan_name_type_str))
		    nmtype =  vlan_name_type_str[vn->name_type];

		seq_printf(seq, "Name-Type: %s\n",
			   nmtype ? nmtype :  "UNKNOWN");
	} else {
		const struct net_device *vlandev = v;
		const struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);

		seq_printf(seq, "%-15s| %d  | %s\n",  vlandev->name,
			   vlan->vlan_id,    vlan->real_dev->name);
	}
	return 0;
}

static int vlandev_seq_show(struct seq_file *seq, void *offset)
{
	struct net_device *vlandev = (struct net_device *) seq->private;
	const struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
	struct rtnl_link_stats64 temp;
	const struct rtnl_link_stats64 *stats;
	static const char fmt64[] = "%30s %12llu\n";
	int i;

	if (!is_vlan_dev(vlandev))
		return 0;

	stats = dev_get_stats(vlandev, &temp);
	seq_printf(seq,
		   "%s  VID: %d	 REORDER_HDR: %i  dev->priv_flags: %hx\n",
		   vlandev->name, vlan->vlan_id,
		   (int)(vlan->flags & 1), vlandev->priv_flags);

	seq_printf(seq, fmt64, "total frames received", stats->rx_packets);
	seq_printf(seq, fmt64, "total bytes received", stats->rx_bytes);
	seq_printf(seq, fmt64, "Broadcast/Multicast Rcvd", stats->multicast);
	seq_puts(seq, "\n");
	seq_printf(seq, fmt64, "total frames transmitted", stats->tx_packets);
	seq_printf(seq, fmt64, "total bytes transmitted", stats->tx_bytes);
	seq_printf(seq, "Device: %s", vlan->real_dev->name);
	/* now show all PRIORITY mappings relating to this VLAN */
	seq_printf(seq, "\nINGRESS priority mappings: "
			"0:%u  1:%u  2:%u  3:%u  4:%u  5:%u  6:%u 7:%u\n",
		   vlan->ingress_priority_map[0],
		   vlan->ingress_priority_map[1],
		   vlan->ingress_priority_map[2],
		   vlan->ingress_priority_map[3],
		   vlan->ingress_priority_map[4],
		   vlan->ingress_priority_map[5],
		   vlan->ingress_priority_map[6],
		   vlan->ingress_priority_map[7]);

	seq_printf(seq, " EGRESS priority mappings: ");
	for (i = 0; i < 16; i++) {
		const struct vlan_priority_tci_mapping *mp
			= vlan->egress_priority_map[i];
		while (mp) {
			seq_printf(seq, "%u:%hu ",
				   mp->priority, ((mp->vlan_qos >> 13) & 0x7));
			mp = mp->next;
		}
	}
	seq_puts(seq, "\n");

	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/******************************************************************************
	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
afab2d29 JP	20	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
afab2d29 JP	21
1da177e4	22	#include <linux/module.h>
61362766	23	#include <linux/errno.h>
1da177e4	24	#include <linux/kernel.h>
61362766	25	#include <linux/string.h>
1da177e4 LT	26	#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>
457c4cbc	31	#include <net/net_namespace.h>
a59a8c1c	32	#include <net/netns/generic.h>
1da177e4 LT	33	#include "vlanproc.h"
	34	#include "vlan.h"
	35
	36	/**** Function Prototypes ***********************************************/
	37
	38	/* Methods for preparing data for reading proc entries */
	39	static int vlan_seq_show(struct seq_file seq, void v);
	40	static void vlan_seq_start(struct seq_file seq, loff_t *pos);
	41	static void vlan_seq_next(struct seq_file seq, void v, loff_t pos);
	42	static void vlan_seq_stop(struct seq_file seq, void );
	43	static int vlandev_seq_show(struct seq_file seq, void v);
	44
	45	/*
	46	* Global Data
	47	*/
	48
	49
	50	/*
122952fc	51	* Names of the proc directory entries
1da177e4 LT	52	*/
	53
	54	static const char name_root[] = "vlan";
	55	static const char name_conf[] = "config";
	56
	57	/*
	58	* Structures for interfacing with the /proc filesystem.
25985edc	59	* VLAN creates its own directory /proc/net/vlan with the following
1da177e4 LT	60	* entries:
	61	* config device status/configuration
	62	* <device> entry for each device
	63	*/
	64
	65	/*
122952fc	66	* Generic /proc/net/vlan/<file> file and inode operations
1da177e4 LT	67	*/
1da177e4 LT	68
56b3d975	69	static const struct seq_operations vlan_seq_ops = {
1da177e4 LT	70	.start = vlan_seq_start,
	71	.next = vlan_seq_next,
	72	.stop = vlan_seq_stop,
	73	.show = vlan_seq_show,
	74	};
	75
	76	static int vlan_seq_open(struct inode inode, struct file file)
	77	{
80de2d98 PE	78	return seq_open_net(inode, file, &vlan_seq_ops,
80de2d98 PE	79	sizeof(struct seq_net_private));
1da177e4 LT	80	}
1da177e4 LT	81
9a32144e	82	static const struct file_operations vlan_fops = {
1da177e4 LT	83	.owner = THIS_MODULE,
	84	.open = vlan_seq_open,
	85	.read = seq_read,
	86	.llseek = seq_lseek,
80de2d98	87	.release = seq_release_net,
1da177e4 LT	88	};
	89
	90	/*
	91	* /proc/net/vlan/<device> file and inode operations
	92	*/
	93
	94	static int vlandev_seq_open(struct inode inode, struct file file)
	95	{
d9dda78b	96	return single_open(file, vlandev_seq_show, PDE_DATA(inode));
1da177e4 LT	97	}
1da177e4 LT	98
9a32144e	99	static const struct file_operations vlandev_fops = {
1da177e4 LT	100	.owner = THIS_MODULE,
	101	.open = vlandev_seq_open,
	102	.read = seq_read,
	103	.llseek = seq_lseek,
	104	.release = single_release,
	105	};
	106
	107	/*
4907cb7b	108	* Proc filesystem directory entries.
1da177e4 LT	109	*/
1da177e4 LT	110
1da177e4	111	/* Strings */
36cbd3dc	112	static const char *const vlan_name_type_str[VLAN_NAME_TYPE_HIGHEST] = {
2029cc2c PM	113	[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",
1da177e4 LT	117	};
	118	/*
	119	* Interface functions
	120	*/
	121
	122	/*
	123	* Clean up /proc/net/vlan entries
	124	*/
	125
cd1c7014	126	void vlan_proc_cleanup(struct net *net)
1da177e4	127	{
a59a8c1c	128	struct vlan_net *vn = net_generic(net, vlan_net_id);
cd1c7014	129
a59a8c1c PE	130	if (vn->proc_vlan_conf)
a59a8c1c PE	131	remove_proc_entry(name_conf, vn->proc_vlan_dir);
1da177e4	132
a59a8c1c	133	if (vn->proc_vlan_dir)
ece31ffd	134	remove_proc_entry(name_root, net->proc_net);
1da177e4 LT	135
	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
2c8c1e72	145	int __net_init vlan_proc_init(struct net *net)
1da177e4	146	{
a59a8c1c	147	struct vlan_net *vn = net_generic(net, vlan_net_id);
cd1c7014	148
a59a8c1c PE	149	vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
a59a8c1c PE	150	if (!vn->proc_vlan_dir)
69ab4b7d PM	151	goto err;
69ab4b7d PM	152
a59a8c1c PE	153	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)
69ab4b7d	156	goto err;
69ab4b7d PM	157	return 0;
	158
	159	err:
afab2d29	160	pr_err("can't create entry in proc filesystem!\n");
cd1c7014	161	vlan_proc_cleanup(net);
1da177e4 LT	162	return -ENOBUFS;
	163	}
	164
	165	/*
	166	* Add directory entry for VLAN device.
	167	*/
	168
2029cc2c	169	int vlan_proc_add_dev(struct net_device *vlandev)
1da177e4	170	{
7da82c06	171	struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
a59a8c1c	172	struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
1da177e4	173
9c5ff24f WC	174	if (!strcmp(vlandev->name, name_conf))
9c5ff24f WC	175	return -EINVAL;
7da82c06	176	vlan->dent =
1d3faa39 DL	177	proc_create_data(vlandev->name, S_IFREG\|S_IRUSR\|S_IWUSR,
1d3faa39 DL	178	vn->proc_vlan_dir, &vlandev_fops, vlandev);
7da82c06	179	if (!vlan->dent)
1da177e4	180	return -ENOBUFS;
1da177e4 LT	181	return 0;
	182	}
	183
	184	/*
	185	* Delete directory entry for VLAN device.
	186	*/
e4999f25	187	void vlan_proc_rem_dev(struct net_device *vlandev)
1da177e4	188	{
1da177e4	189	/** NOTE: This will consume the memory pointed to by dent, it seems. */
a8ca16ea DH	190	proc_remove(vlan_dev_priv(vlandev)->dent);
a8ca16ea DH	191	vlan_dev_priv(vlandev)->dent = NULL;
1da177e4 LT	192	}
	193
	194	/**** Proc filesystem entry points **************************************/
	195
	196	/*
	197	* The following few functions build the content of /proc/net/vlan/config
	198	*/
	199
122952fc	200	/* start read of /proc/net/vlan/config */
1da177e4	201	static void vlan_seq_start(struct seq_file seq, loff_t *pos)
9e067597	202	__acquires(rcu)
1da177e4 LT	203	{
1da177e4 LT	204	struct net_device *dev;
80de2d98	205	struct net *net = seq_file_net(seq);
1da177e4 LT	206	loff_t i = 1;
1da177e4 LT	207
9e067597	208	rcu_read_lock();
1da177e4 LT	209	if (*pos == 0)
1da177e4 LT	210	return SEQ_START_TOKEN;
122952fc	211
9e067597	212	for_each_netdev_rcu(net, dev) {
7562f876 PE	213	if (!is_vlan_dev(dev))
	214	continue;
	215
	216	if (i++ == *pos)
	217	return dev;
	218	}
122952fc	219
7562f876	220	return NULL;
122952fc	221	}
1da177e4 LT	222
	223	static void vlan_seq_next(struct seq_file seq, void v, loff_t pos)
	224	{
7562f876	225	struct net_device *dev;
80de2d98	226	struct net *net = seq_file_net(seq);
7562f876	227
1da177e4 LT	228	++*pos;
1da177e4 LT	229
ea110733	230	dev = v;
7562f876	231	if (v == SEQ_START_TOKEN)
80de2d98	232	dev = net_device_entry(&net->dev_base_head);
7562f876	233
9e067597	234	for_each_netdev_continue_rcu(net, dev) {
7562f876 PE	235	if (!is_vlan_dev(dev))
	236	continue;
	237
	238	return dev;
	239	}
	240
	241	return NULL;
1da177e4 LT	242	}
	243
	244	static void vlan_seq_stop(struct seq_file seq, void v)
9e067597	245	__releases(rcu)
1da177e4	246	{
9e067597	247	rcu_read_unlock();
1da177e4 LT	248	}
	249
	250	static int vlan_seq_show(struct seq_file seq, void v)
	251	{
7a17a2f7 PE	252	struct net *net = seq_file_net(seq);
	253	struct vlan_net *vn = net_generic(net, vlan_net_id);
	254
1da177e4 LT	255	if (v == SEQ_START_TOKEN) {
	256	const char *nmtype = NULL;
	257
	258	seq_puts(seq, "VLAN Dev name \| VLAN ID\n");
	259
7a17a2f7 PE	260	if (vn->name_type < ARRAY_SIZE(vlan_name_type_str))
7a17a2f7 PE	261	nmtype = vlan_name_type_str[vn->name_type];
1da177e4	262
122952fc	263	seq_printf(seq, "Name-Type: %s\n",
2029cc2c	264	nmtype ? nmtype : "UNKNOWN");
1da177e4 LT	265	} else {
1da177e4 LT	266	const struct net_device *vlandev = v;
7da82c06	267	const struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
1da177e4	268
122952fc	269	seq_printf(seq, "%-15s\| %d \| %s\n", vlandev->name,
7da82c06	270	vlan->vlan_id, vlan->real_dev->name);
1da177e4 LT	271	}
	272	return 0;
	273	}
	274
	275	static int vlandev_seq_show(struct seq_file seq, void offset)
	276	{
	277	struct net_device vlandev = (struct net_device ) seq->private;
7da82c06	278	const struct vlan_dev_priv *vlan = vlan_dev_priv(vlandev);
28172739	279	struct rtnl_link_stats64 temp;
be1f3c2c	280	const struct rtnl_link_stats64 *stats;
be1f3c2c	281	static const char fmt64[] = "%30s %12llu\n";
1da177e4 LT	282	int i;
1da177e4 LT	283
26a25239	284	if (!is_vlan_dev(vlandev))
1da177e4 LT	285	return 0;
1da177e4 LT	286
28172739	287	stats = dev_get_stats(vlandev, &temp);
2029cc2c PM	288	seq_printf(seq,
2029cc2c PM	289	"%s VID: %d REORDER_HDR: %i dev->priv_flags: %hx\n",
7da82c06 JP	290	vlandev->name, vlan->vlan_id,
7da82c06 JP	291	(int)(vlan->flags & 1), vlandev->priv_flags);
1da177e4	292
be1f3c2c BH	293	seq_printf(seq, fmt64, "total frames received", stats->rx_packets);
	294	seq_printf(seq, fmt64, "total bytes received", stats->rx_bytes);
	295	seq_printf(seq, fmt64, "Broadcast/Multicast Rcvd", stats->multicast);
1da177e4	296	seq_puts(seq, "\n");
be1f3c2c BH	297	seq_printf(seq, fmt64, "total frames transmitted", stats->tx_packets);
be1f3c2c BH	298	seq_printf(seq, fmt64, "total bytes transmitted", stats->tx_bytes);
7da82c06	299	seq_printf(seq, "Device: %s", vlan->real_dev->name);
1da177e4	300	/* now show all PRIORITY mappings relating to this VLAN */
2029cc2c PM	301	seq_printf(seq, "\nINGRESS priority mappings: "
2029cc2c PM	302	"0:%u 1:%u 2:%u 3:%u 4:%u 5:%u 6:%u 7:%u\n",
7da82c06 JP	303	vlan->ingress_priority_map[0],
	304	vlan->ingress_priority_map[1],
	305	vlan->ingress_priority_map[2],
	306	vlan->ingress_priority_map[3],
	307	vlan->ingress_priority_map[4],
	308	vlan->ingress_priority_map[5],
	309	vlan->ingress_priority_map[6],
	310	vlan->ingress_priority_map[7]);
1da177e4	311
309f796f	312	seq_printf(seq, " EGRESS priority mappings: ");
1da177e4 LT	313	for (i = 0; i < 16; i++) {
1da177e4 LT	314	const struct vlan_priority_tci_mapping *mp
7da82c06	315	= vlan->egress_priority_map[i];
1da177e4	316	while (mp) {
734423cf	317	seq_printf(seq, "%u:%hu ",
1da177e4 LT	318	mp->priority, ((mp->vlan_qos >> 13) & 0x7));
	319	mp = mp->next;
	320	}
	321	}
	322	seq_puts(seq, "\n");
	323
	324	return 0;
	325	}