331 lines
8.6 KiB
C
331 lines
8.6 KiB
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
|
|
*****************************************************************************/
|
|
|
|
#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 folowing
|
|
* 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(inode)->data);
|
|
}
|
|
|
|
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 derectory entries.
|
|
*/
|
|
|
|
/* Strings */
|
|
static const char *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)
|
|
proc_net_remove(net, name_root);
|
|
|
|
/* 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 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("%s: can't create entry in proc filesystem!\n", __func__);
|
|
vlan_proc_cleanup(net);
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
/*
|
|
* Add directory entry for VLAN device.
|
|
*/
|
|
|
|
int vlan_proc_add_dev(struct net_device *vlandev)
|
|
{
|
|
struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
|
|
struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
|
|
|
|
dev_info->dent =
|
|
proc_create_data(vlandev->name, S_IFREG|S_IRUSR|S_IWUSR,
|
|
vn->proc_vlan_dir, &vlandev_fops, vlandev);
|
|
if (!dev_info->dent)
|
|
return -ENOBUFS;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Delete directory entry for VLAN device.
|
|
*/
|
|
int vlan_proc_rem_dev(struct net_device *vlandev)
|
|
{
|
|
struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
|
|
|
|
/** NOTE: This will consume the memory pointed to by dent, it seems. */
|
|
if (vlan_dev_info(vlandev)->dent) {
|
|
remove_proc_entry(vlan_dev_info(vlandev)->dent->name,
|
|
vn->proc_vlan_dir);
|
|
vlan_dev_info(vlandev)->dent = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/****** 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(dev_base_lock)
|
|
{
|
|
struct net_device *dev;
|
|
struct net *net = seq_file_net(seq);
|
|
loff_t i = 1;
|
|
|
|
read_lock(&dev_base_lock);
|
|
|
|
if (*pos == 0)
|
|
return SEQ_START_TOKEN;
|
|
|
|
for_each_netdev(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 = (struct net_device *)v;
|
|
if (v == SEQ_START_TOKEN)
|
|
dev = net_device_entry(&net->dev_base_head);
|
|
|
|
for_each_netdev_continue(net, dev) {
|
|
if (!is_vlan_dev(dev))
|
|
continue;
|
|
|
|
return dev;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void vlan_seq_stop(struct seq_file *seq, void *v)
|
|
__releases(dev_base_lock)
|
|
{
|
|
read_unlock(&dev_base_lock);
|
|
}
|
|
|
|
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_info *dev_info = vlan_dev_info(vlandev);
|
|
|
|
seq_printf(seq, "%-15s| %d | %s\n", vlandev->name,
|
|
dev_info->vlan_id, dev_info->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_info *dev_info = vlan_dev_info(vlandev);
|
|
struct net_device_stats *stats = &vlandev->stats;
|
|
static const char fmt[] = "%30s %12lu\n";
|
|
int i;
|
|
|
|
if (!is_vlan_dev(vlandev))
|
|
return 0;
|
|
|
|
seq_printf(seq,
|
|
"%s VID: %d REORDER_HDR: %i dev->priv_flags: %hx\n",
|
|
vlandev->name, dev_info->vlan_id,
|
|
(int)(dev_info->flags & 1), vlandev->priv_flags);
|
|
|
|
seq_printf(seq, fmt, "total frames received", stats->rx_packets);
|
|
seq_printf(seq, fmt, "total bytes received", stats->rx_bytes);
|
|
seq_printf(seq, fmt, "Broadcast/Multicast Rcvd", stats->multicast);
|
|
seq_puts(seq, "\n");
|
|
seq_printf(seq, fmt, "total frames transmitted", stats->tx_packets);
|
|
seq_printf(seq, fmt, "total bytes transmitted", stats->tx_bytes);
|
|
seq_printf(seq, fmt, "total headroom inc",
|
|
dev_info->cnt_inc_headroom_on_tx);
|
|
seq_printf(seq, fmt, "total encap on xmit",
|
|
dev_info->cnt_encap_on_xmit);
|
|
seq_printf(seq, "Device: %s", dev_info->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",
|
|
dev_info->ingress_priority_map[0],
|
|
dev_info->ingress_priority_map[1],
|
|
dev_info->ingress_priority_map[2],
|
|
dev_info->ingress_priority_map[3],
|
|
dev_info->ingress_priority_map[4],
|
|
dev_info->ingress_priority_map[5],
|
|
dev_info->ingress_priority_map[6],
|
|
dev_info->ingress_priority_map[7]);
|
|
|
|
seq_printf(seq, " EGRESS priority mappings: ");
|
|
for (i = 0; i < 16; i++) {
|
|
const struct vlan_priority_tci_mapping *mp
|
|
= dev_info->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;
|
|
}
|