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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [net/] [8021q/] [vlanproc.c] - Blame information for rev 1765

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/******************************************************************************
 * 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/config.h>
#include <linux/stddef.h>       /* offsetof(), etc. */
#include <linux/errno.h>        /* return codes */
#include <linux/kernel.h>
#include <linux/slab.h>         /* kmalloc(), kfree() */
#include <linux/mm.h>           /* verify_area(), etc. */
#include <linux/string.h>       /* inline mem*, str* functions */
#include <linux/init.h>         /* __initfunc et al. */
#include <asm/segment.h>        /* kernel <-> user copy */
#include <asm/byteorder.h>      /* htons(), etc. */
#include <asm/uaccess.h>        /* copy_to_user */
#include <asm/io.h>
#include <linux/proc_fs.h>
#include <linux/fs.h>
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
#include "vlanproc.h"
#include "vlan.h"
 
/****** Function Prototypes *************************************************/
 
#ifdef CONFIG_PROC_FS
 
/* Proc filesystem interface */
static ssize_t vlan_proc_read(struct file *file, char *buf, size_t count,
                              loff_t *ppos);
 
/* Methods for preparing data for reading proc entries */
 
static int vlan_config_get_info(char *buf, char **start, off_t offs, int len);
static int vlandev_get_info(char *buf, char **start, off_t offs, int len);
 
/* Miscellaneous */
 
/*
 *      Global Data
 */
 
/*
 *      Names of the proc directory entries
 */
 
static char name_root[]  = "vlan";
static char name_conf[]  = "config";
static char term_msg[]   = "***KERNEL:  Out of buffer space!***\n";
 
/*
 *      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 struct file_operations vlan_fops = {
        read:   vlan_proc_read,
        ioctl: NULL, /* vlan_proc_ioctl */
};
 
/*
 *      /proc/net/vlan/<device> file and inode operations
 */
 
static struct file_operations vlandev_fops = {
        read:   vlan_proc_read,
        ioctl:  NULL, /* vlan_proc_ioctl */
};
 
/*
 * Proc filesystem derectory entries.
 */
 
/*
 *      /proc/net/vlan
 */
 
static struct proc_dir_entry *proc_vlan_dir;
 
/*
 *      /proc/net/vlan/config
 */
 
static struct proc_dir_entry *proc_vlan_conf;
 
/* Strings */
static char conf_hdr[] = "VLAN Dev name  | VLAN ID\n";
 
/*
 *      Interface functions
 */
 
/*
 *      Clean up /proc/net/vlan entries
 */
 
void vlan_proc_cleanup(void)
{
        if (proc_vlan_conf)
                remove_proc_entry(name_conf, proc_vlan_dir);
 
        if (proc_vlan_dir)
                proc_net_remove(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 __init vlan_proc_init(void)
{
        proc_vlan_dir = proc_mkdir(name_root, proc_net);
        if (proc_vlan_dir) {
                proc_vlan_conf = create_proc_entry(name_conf,
                                                   S_IFREG|S_IRUSR|S_IWUSR,
                                                   proc_vlan_dir);
                if (proc_vlan_conf) {
                        proc_vlan_conf->proc_fops = &vlan_fops;
                        proc_vlan_conf->get_info = vlan_config_get_info;
                        return 0;
                }
        }
        vlan_proc_cleanup();
        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);
 
        if (!(vlandev->priv_flags & IFF_802_1Q_VLAN)) {
                printk(KERN_ERR
                       "ERROR:  vlan_proc_add, device -:%s:- is NOT a VLAN\n",
                       vlandev->name);
                return -EINVAL;
        }
 
        dev_info->dent = create_proc_entry(vlandev->name,
                                           S_IFREG|S_IRUSR|S_IWUSR,
                                           proc_vlan_dir);
        if (!dev_info->dent)
                return -ENOBUFS;
 
        dev_info->dent->proc_fops = &vlandev_fops;
        dev_info->dent->get_info = &vlandev_get_info;
        dev_info->dent->data = vlandev;
 
#ifdef VLAN_DEBUG
        printk(KERN_ERR "vlan_proc_add, device -:%s:- being added.\n",
               vlandev->name);
#endif
        return 0;
}
 
/*
 *      Delete directory entry for VLAN device.
 */
int vlan_proc_rem_dev(struct net_device *vlandev)
{
        if (!vlandev) {
                printk(VLAN_ERR "%s: invalid argument: %p\n",
                        __FUNCTION__, vlandev);
                return -EINVAL;
        }
 
        if (!(vlandev->priv_flags & IFF_802_1Q_VLAN)) {
                printk(VLAN_DBG "%s: invalid argument, device: %s is not a VLAN device, priv_flags: 0x%4hX.\n",
                        __FUNCTION__, vlandev->name, vlandev->priv_flags);
                return -EINVAL;
        }
 
#ifdef VLAN_DEBUG
        printk(VLAN_DBG __FUNCTION__ ": dev: %p\n", vlandev);
#endif
 
        /** 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, proc_vlan_dir);
                VLAN_DEV_INFO(vlandev)->dent = NULL;
        }
 
        return 0;
}
 
/****** Proc filesystem entry points ****************************************/
 
/*
 *      Read VLAN proc directory entry.
 *      This is universal routine for reading all entries in /proc/net/vlan
 *      directory.  Each directory entry contains a pointer to the 'method' for
 *      preparing data for that entry.
 *      o verify arguments
 *      o allocate kernel buffer
 *      o call get_info() to prepare data
 *      o copy data to user space
 *      o release kernel buffer
 *
 *      Return: number of bytes copied to user space (0, if no data)
 *              <0       error
 */
static ssize_t vlan_proc_read(struct file *file, char *buf,
                              size_t count, loff_t *ppos)
{
        struct inode *inode = file->f_dentry->d_inode;
        struct proc_dir_entry *dent;
        char *page;
        int pos, offs, len;
 
        if (count <= 0)
                return 0;
 
        dent = inode->u.generic_ip;
        if ((dent == NULL) || (dent->get_info == NULL))
                return 0;
 
        page = kmalloc(VLAN_PROC_BUFSZ, GFP_KERNEL);
        VLAN_MEM_DBG("page malloc, addr: %p  size: %i\n",
                     page, VLAN_PROC_BUFSZ);
 
        if (page == NULL)
                return -ENOBUFS;
 
        pos = dent->get_info(page, dent->data, 0, 0);
        offs = file->f_pos;
        if (offs < pos) {
                len = min_t(int, pos - offs, count);
                if (copy_to_user(buf, (page + offs), len)) {
                        kfree(page);
                        return -EFAULT;
                }
 
                file->f_pos += len;
        } else {
                len = 0;
        }
 
        kfree(page);
        VLAN_FMEM_DBG("page free, addr: %p\n", page);
        return len;
}
 
/*
 * The following few functions build the content of /proc/net/vlan/config
 */
 
static int vlan_proc_get_vlan_info(char* buf, unsigned int cnt)
{
        struct net_device *vlandev = NULL;
        struct vlan_group *grp = NULL;
        int h, i;
        char *nm_type = NULL;
        struct vlan_dev_info *dev_info = NULL;
 
#ifdef VLAN_DEBUG
        printk(VLAN_DBG __FUNCTION__ ": cnt == %i\n", cnt);
#endif
 
        if (vlan_name_type == VLAN_NAME_TYPE_RAW_PLUS_VID) {
                nm_type = "VLAN_NAME_TYPE_RAW_PLUS_VID";
        } else if (vlan_name_type == VLAN_NAME_TYPE_PLUS_VID_NO_PAD) {
                nm_type = "VLAN_NAME_TYPE_PLUS_VID_NO_PAD";
        } else if (vlan_name_type == VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD) {
                nm_type = "VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD";
        } else if (vlan_name_type == VLAN_NAME_TYPE_PLUS_VID) {
                nm_type = "VLAN_NAME_TYPE_PLUS_VID";
        } else {
                nm_type = "UNKNOWN";
        }
 
        cnt += sprintf(buf + cnt, "Name-Type: %s\n", nm_type);
 
        spin_lock_bh(&vlan_group_lock);
        for (h = 0; h < VLAN_GRP_HASH_SIZE; h++) {
                for (grp = vlan_group_hash[h]; grp != NULL; grp = grp->next) {
                        for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
                                vlandev = grp->vlan_devices[i];
                                if (!vlandev)
                                        continue;
 
                                if ((cnt + 100) > VLAN_PROC_BUFSZ) {
                                        if ((cnt+strlen(term_msg)) < VLAN_PROC_BUFSZ)
                                                cnt += sprintf(buf+cnt, "%s", term_msg);
 
                                        goto out;
                                }
 
                                dev_info = VLAN_DEV_INFO(vlandev);
                                cnt += sprintf(buf + cnt, "%-15s| %d  | %s\n",
                                               vlandev->name,
                                               dev_info->vlan_id,
                                               dev_info->real_dev->name);
                        }
                }
        }
out:
        spin_unlock_bh(&vlan_group_lock);
 
        return cnt;
}
 
/*
 *      Prepare data for reading 'Config' entry.
 *      Return length of data.
 */
 
static int vlan_config_get_info(char *buf, char **start,
                                off_t offs, int len)
{
        strcpy(buf, conf_hdr);
        return vlan_proc_get_vlan_info(buf, (unsigned int)(strlen(conf_hdr)));
}
 
/*
 *      Prepare data for reading <device> entry.
 *      Return length of data.
 *
 *      On entry, the 'start' argument will contain a pointer to VLAN device
 *      data space.
 */
 
static int vlandev_get_info(char *buf, char **start,
                            off_t offs, int len)
{
        struct net_device *vlandev = (void *) start;
        struct net_device_stats *stats = NULL;
        struct vlan_dev_info *dev_info = NULL;
        struct vlan_priority_tci_mapping *mp;
        int cnt = 0;
        int i;
 
        if ((vlandev == NULL) || (!(vlandev->priv_flags & IFF_802_1Q_VLAN)))
                return 0;
 
        dev_info = VLAN_DEV_INFO(vlandev);
 
        cnt += sprintf(buf + cnt, "%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);
 
        stats = vlan_dev_get_stats(vlandev);
 
        cnt += sprintf(buf + cnt, "%30s: %12lu\n",
                       "total frames received", stats->rx_packets);
 
        cnt += sprintf(buf + cnt, "%30s: %12lu\n",
                       "total bytes received", stats->rx_bytes);
 
        cnt += sprintf(buf + cnt, "%30s: %12lu\n",
                       "Broadcast/Multicast Rcvd", stats->multicast);
 
        cnt += sprintf(buf + cnt, "\n%30s: %12lu\n",
                       "total frames transmitted", stats->tx_packets);
 
        cnt += sprintf(buf + cnt, "%30s: %12lu\n",
                       "total bytes transmitted", stats->tx_bytes);
 
        cnt += sprintf(buf + cnt, "%30s: %12lu\n",
                       "total headroom inc", dev_info->cnt_inc_headroom_on_tx);
 
        cnt += sprintf(buf + cnt, "%30s: %12lu\n",
                       "total encap on xmit", dev_info->cnt_encap_on_xmit);
 
        cnt += sprintf(buf + cnt, "Device: %s", dev_info->real_dev->name);
 
        /* now show all PRIORITY mappings relating to this VLAN */
        cnt += sprintf(buf + cnt, "\nINGRESS priority mappings: 0:%lu  1:%lu  2:%lu  3:%lu  4:%lu  5:%lu  6:%lu 7:%lu\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]);
 
        if ((cnt + 100) > VLAN_PROC_BUFSZ) {
                if ((cnt + strlen(term_msg)) >= VLAN_PROC_BUFSZ) {
                        /* should never get here */
                        return cnt;
                } else {
                        cnt += sprintf(buf + cnt, "%s", term_msg);
                        return cnt;
                }
        }
 
        cnt += sprintf(buf + cnt, "EGRESSS priority Mappings: ");
 
        for (i = 0; i < 16; i++) {
                mp = dev_info->egress_priority_map[i];
                while (mp) {
                        cnt += sprintf(buf + cnt, "%lu:%hu ",
                                       mp->priority, ((mp->vlan_qos >> 13) & 0x7));
 
                        if ((cnt + 100) > VLAN_PROC_BUFSZ) {
                                if ((cnt + strlen(term_msg)) >= VLAN_PROC_BUFSZ) {
                                        /* should never get here */
                                        return cnt;
                                } else {
                                        cnt += sprintf(buf + cnt, "%s", term_msg);
                                        return cnt;
                                }
                        }
                        mp = mp->next;
                }
        }
 
        cnt += sprintf(buf + cnt, "\n");
 
        return cnt;
}
 
#else /* No CONFIG_PROC_FS */
 
/*
 *      No /proc - output stubs
 */
 
int __init vlan_proc_init (void)
{
        return 0;
}
 
void vlan_proc_cleanup(void)
{
        return;
}
 
 
int vlan_proc_add_dev(struct net_device *vlandev)
{
        return 0;
}
 
int vlan_proc_rem_dev(struct net_device *vlandev)
{
        return 0;
}
 
#endif /* No CONFIG_PROC_FS */

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [net/] [8021q/] [vlanproc.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1275	phoenix	`/******************************************************************************`
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
20			`#include <linux/config.h>`
21			`#include <linux/stddef.h> /* offsetof(), etc. */`
22			`#include <linux/errno.h> /* return codes */`
23			`#include <linux/kernel.h>`
24			`#include <linux/slab.h> /* kmalloc(), kfree() */`
25			`#include <linux/mm.h> /* verify_area(), etc. */`
26			`#include <linux/string.h> /* inline mem, str functions */`
27			`#include <linux/init.h> /* __initfunc et al. */`
28			`#include <asm/segment.h> /* kernel <-> user copy */`
29			`#include <asm/byteorder.h> /* htons(), etc. */`
30			`#include <asm/uaccess.h> /* copy_to_user */`
31			`#include <asm/io.h>`
32			`#include <linux/proc_fs.h>`
33			`#include <linux/fs.h>`
34			`#include <linux/netdevice.h>`
35			`#include <linux/if_vlan.h>`
36			`#include "vlanproc.h"`
37			`#include "vlan.h"`
38
39			`/**** Function Prototypes ***********************************************/`
40
41			`#ifdef CONFIG_PROC_FS`
42
43			`/* Proc filesystem interface */`
44			`static ssize_t vlan_proc_read(struct file file, char buf, size_t count,`
45			`loff_t *ppos);`
46
47			`/* Methods for preparing data for reading proc entries */`
48
49			`static int vlan_config_get_info(char buf, char *start, off_t offs, int len);`
50			`static int vlandev_get_info(char buf, char *start, off_t offs, int len);`
51
52			`/* Miscellaneous */`
53
54			`/*`
55			`* Global Data`
56			`*/`
57
58			`/*`
59			`* Names of the proc directory entries`
60			`*/`
61
62			`static char name_root[] = "vlan";`
63			`static char name_conf[] = "config";`
64			`static char term_msg[] = "*KERNEL: Out of buffer space!*\n";`
65
66			`/*`
67			`* Structures for interfacing with the /proc filesystem.`
68			`* VLAN creates its own directory /proc/net/vlan with the folowing`
69			`* entries:`
70			`* config device status/configuration`
71			`* <device> entry for each device`
72			`*/`
73
74			`/*`
75			`* Generic /proc/net/vlan/<file> file and inode operations`
76			`*/`
77
78			`static struct file_operations vlan_fops = {`
79			`read: vlan_proc_read,`
80			`ioctl: NULL, /* vlan_proc_ioctl */`
81			`};`
82
83			`/*`
84			`* /proc/net/vlan/<device> file and inode operations`
85			`*/`
86
87			`static struct file_operations vlandev_fops = {`
88			`read: vlan_proc_read,`
89			`ioctl: NULL, /* vlan_proc_ioctl */`
90			`};`
91
92			`/*`
93			`* Proc filesystem derectory entries.`
94			`*/`
95
96			`/*`
97			`* /proc/net/vlan`
98			`*/`
99
100			`static struct proc_dir_entry *proc_vlan_dir;`
101
102			`/*`
103			`* /proc/net/vlan/config`
104			`*/`
105
106			`static struct proc_dir_entry *proc_vlan_conf;`
107
108			`/* Strings */`
109			`static char conf_hdr[] = "VLAN Dev name \| VLAN ID\n";`
110
111			`/*`
112			`* Interface functions`
113			`*/`
114
115			`/*`
116			`* Clean up /proc/net/vlan entries`
117			`*/`
118
119			`void vlan_proc_cleanup(void)`
120			`{`
121			`if (proc_vlan_conf)`
122			`remove_proc_entry(name_conf, proc_vlan_dir);`
123
124			`if (proc_vlan_dir)`
125			`proc_net_remove(name_root);`
126
127			`/* Dynamically added entries should be cleaned up as their vlan_device`
128			`* is removed, so we should not have to take care of it here...`
129			`*/`
130			`}`
131
132			`/*`
133			`* Create /proc/net/vlan entries`
134			`*/`
135
136			`int __init vlan_proc_init(void)`
137			`{`
138			`proc_vlan_dir = proc_mkdir(name_root, proc_net);`
139			`if (proc_vlan_dir) {`
140			`proc_vlan_conf = create_proc_entry(name_conf,`
141			`S_IFREG\|S_IRUSR\|S_IWUSR,`
142			`proc_vlan_dir);`
143			`if (proc_vlan_conf) {`
144			`proc_vlan_conf->proc_fops = &vlan_fops;`
145			`proc_vlan_conf->get_info = vlan_config_get_info;`
146			`return 0;`
147			`}`
148			`}`
149			`vlan_proc_cleanup();`
150			`return -ENOBUFS;`
151			`}`
152
153			`/*`
154			`* Add directory entry for VLAN device.`
155			`*/`
156
157			`int vlan_proc_add_dev (struct net_device *vlandev)`
158			`{`
159			`struct vlan_dev_info *dev_info = VLAN_DEV_INFO(vlandev);`
160
161			`if (!(vlandev->priv_flags & IFF_802_1Q_VLAN)) {`
162			`printk(KERN_ERR`
163			`"ERROR: vlan_proc_add, device -:%s:- is NOT a VLAN\n",`
164			`vlandev->name);`
165			`return -EINVAL;`
166			`}`
167
168			`dev_info->dent = create_proc_entry(vlandev->name,`
169			`S_IFREG\|S_IRUSR\|S_IWUSR,`
170			`proc_vlan_dir);`
171			`if (!dev_info->dent)`
172			`return -ENOBUFS;`
173
174			`dev_info->dent->proc_fops = &vlandev_fops;`
175			`dev_info->dent->get_info = &vlandev_get_info;`
176			`dev_info->dent->data = vlandev;`
177
178			`#ifdef VLAN_DEBUG`
179			`printk(KERN_ERR "vlan_proc_add, device -:%s:- being added.\n",`
180			`vlandev->name);`
181			`#endif`
182			`return 0;`
183			`}`
184
185			`/*`
186			`* Delete directory entry for VLAN device.`
187			`*/`
188			`int vlan_proc_rem_dev(struct net_device *vlandev)`
189			`{`
190			`if (!vlandev) {`
191			`printk(VLAN_ERR "%s: invalid argument: %p\n",`
192			`__FUNCTION__, vlandev);`
193			`return -EINVAL;`
194			`}`
195
196			`if (!(vlandev->priv_flags & IFF_802_1Q_VLAN)) {`
197			`printk(VLAN_DBG "%s: invalid argument, device: %s is not a VLAN device, priv_flags: 0x%4hX.\n",`
198			`__FUNCTION__, vlandev->name, vlandev->priv_flags);`
199			`return -EINVAL;`
200			`}`
201
202			`#ifdef VLAN_DEBUG`
203			`printk(VLAN_DBG __FUNCTION__ ": dev: %p\n", vlandev);`
204			`#endif`
205
206			`/** NOTE: This will consume the memory pointed to by dent, it seems. */`
207			`if (VLAN_DEV_INFO(vlandev)->dent) {`
208			`remove_proc_entry(VLAN_DEV_INFO(vlandev)->dent->name, proc_vlan_dir);`
209			`VLAN_DEV_INFO(vlandev)->dent = NULL;`
210			`}`
211
212			`return 0;`
213			`}`
214
215			`/**** Proc filesystem entry points **************************************/`
216
217			`/*`
218			`* Read VLAN proc directory entry.`
219			`* This is universal routine for reading all entries in /proc/net/vlan`
220			`* directory. Each directory entry contains a pointer to the 'method' for`
221			`* preparing data for that entry.`
222			`* o verify arguments`
223			`* o allocate kernel buffer`
224			`* o call get_info() to prepare data`
225			`* o copy data to user space`
226			`* o release kernel buffer`
227			`*`
228			`* Return: number of bytes copied to user space (0, if no data)`
229			`* <0 error`
230			`*/`
231			`static ssize_t vlan_proc_read(struct file file, char buf,`
232			`size_t count, loff_t *ppos)`
233			`{`
234			`struct inode *inode = file->f_dentry->d_inode;`
235			`struct proc_dir_entry *dent;`
236			`char *page;`
237			`int pos, offs, len;`
238
239			`if (count <= 0)`
240			`return 0;`
241
242			`dent = inode->u.generic_ip;`
243			`if ((dent == NULL) \|\| (dent->get_info == NULL))`
244			`return 0;`
245
246			`page = kmalloc(VLAN_PROC_BUFSZ, GFP_KERNEL);`
247			`VLAN_MEM_DBG("page malloc, addr: %p size: %i\n",`
248			`page, VLAN_PROC_BUFSZ);`
249
250			`if (page == NULL)`
251			`return -ENOBUFS;`
252
253			`pos = dent->get_info(page, dent->data, 0, 0);`
254			`offs = file->f_pos;`
255			`if (offs < pos) {`
256			`len = min_t(int, pos - offs, count);`
257			`if (copy_to_user(buf, (page + offs), len)) {`
258			`kfree(page);`
259			`return -EFAULT;`
260			`}`
261
262			`file->f_pos += len;`
263			`} else {`
264			`len = 0;`
265			`}`
266
267			`kfree(page);`
268			`VLAN_FMEM_DBG("page free, addr: %p\n", page);`
269			`return len;`
270			`}`
271
272			`/*`
273			`* The following few functions build the content of /proc/net/vlan/config`
274			`*/`
275
276			`static int vlan_proc_get_vlan_info(char* buf, unsigned int cnt)`
277			`{`
278			`struct net_device *vlandev = NULL;`
279			`struct vlan_group *grp = NULL;`
280			`int h, i;`
281			`char *nm_type = NULL;`
282			`struct vlan_dev_info *dev_info = NULL;`
283
284			`#ifdef VLAN_DEBUG`
285			`printk(VLAN_DBG __FUNCTION__ ": cnt == %i\n", cnt);`
286			`#endif`
287
288			`if (vlan_name_type == VLAN_NAME_TYPE_RAW_PLUS_VID) {`
289			`nm_type = "VLAN_NAME_TYPE_RAW_PLUS_VID";`
290			`} else if (vlan_name_type == VLAN_NAME_TYPE_PLUS_VID_NO_PAD) {`
291			`nm_type = "VLAN_NAME_TYPE_PLUS_VID_NO_PAD";`
292			`} else if (vlan_name_type == VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD) {`
293			`nm_type = "VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD";`
294			`} else if (vlan_name_type == VLAN_NAME_TYPE_PLUS_VID) {`
295			`nm_type = "VLAN_NAME_TYPE_PLUS_VID";`
296			`} else {`
297			`nm_type = "UNKNOWN";`
298			`}`
299
300			`cnt += sprintf(buf + cnt, "Name-Type: %s\n", nm_type);`
301
302			`spin_lock_bh(&vlan_group_lock);`
303			`for (h = 0; h < VLAN_GRP_HASH_SIZE; h++) {`
304			`for (grp = vlan_group_hash[h]; grp != NULL; grp = grp->next) {`
305			`for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {`
306			`vlandev = grp->vlan_devices[i];`
307			`if (!vlandev)`
308			`continue;`
309
310			`if ((cnt + 100) > VLAN_PROC_BUFSZ) {`
311			`if ((cnt+strlen(term_msg)) < VLAN_PROC_BUFSZ)`
312			`cnt += sprintf(buf+cnt, "%s", term_msg);`
313
314			`goto out;`
315			`}`
316
317			`dev_info = VLAN_DEV_INFO(vlandev);`
318			`cnt += sprintf(buf + cnt, "%-15s\| %d \| %s\n",`
319			`vlandev->name,`
320			`dev_info->vlan_id,`
321			`dev_info->real_dev->name);`
322			`}`
323			`}`
324			`}`
325			`out:`
326			`spin_unlock_bh(&vlan_group_lock);`
327
328			`return cnt;`
329			`}`
330
331			`/*`
332			`* Prepare data for reading 'Config' entry.`
333			`* Return length of data.`
334			`*/`
335
336			`static int vlan_config_get_info(char buf, char *start,`
337			`off_t offs, int len)`
338			`{`
339			`strcpy(buf, conf_hdr);`
340			`return vlan_proc_get_vlan_info(buf, (unsigned int)(strlen(conf_hdr)));`
341			`}`
342
343			`/*`
344			`* Prepare data for reading <device> entry.`
345			`* Return length of data.`
346			`*`
347			`* On entry, the 'start' argument will contain a pointer to VLAN device`
348			`* data space.`
349			`*/`
350
351			`static int vlandev_get_info(char buf, char *start,`
352			`off_t offs, int len)`
353			`{`
354			`struct net_device vlandev = (void ) start;`
355			`struct net_device_stats *stats = NULL;`
356			`struct vlan_dev_info *dev_info = NULL;`
357			`struct vlan_priority_tci_mapping *mp;`
358			`int cnt = 0;`
359			`int i;`
360
361			`if ((vlandev == NULL) \|\| (!(vlandev->priv_flags & IFF_802_1Q_VLAN)))`
362			`return 0;`
363
364			`dev_info = VLAN_DEV_INFO(vlandev);`
365
366			`cnt += sprintf(buf + cnt, "%s VID: %d REORDER_HDR: %i dev->priv_flags: %hx\n",`
367			`vlandev->name, dev_info->vlan_id,`
368			`(int)(dev_info->flags & 1), vlandev->priv_flags);`
369
370			`stats = vlan_dev_get_stats(vlandev);`
371
372			`cnt += sprintf(buf + cnt, "%30s: %12lu\n",`
373			`"total frames received", stats->rx_packets);`
374
375			`cnt += sprintf(buf + cnt, "%30s: %12lu\n",`
376			`"total bytes received", stats->rx_bytes);`
377
378			`cnt += sprintf(buf + cnt, "%30s: %12lu\n",`
379			`"Broadcast/Multicast Rcvd", stats->multicast);`
380
381			`cnt += sprintf(buf + cnt, "\n%30s: %12lu\n",`
382			`"total frames transmitted", stats->tx_packets);`
383
384			`cnt += sprintf(buf + cnt, "%30s: %12lu\n",`
385			`"total bytes transmitted", stats->tx_bytes);`
386
387			`cnt += sprintf(buf + cnt, "%30s: %12lu\n",`
388			`"total headroom inc", dev_info->cnt_inc_headroom_on_tx);`
389
390			`cnt += sprintf(buf + cnt, "%30s: %12lu\n",`
391			`"total encap on xmit", dev_info->cnt_encap_on_xmit);`
392
393			`cnt += sprintf(buf + cnt, "Device: %s", dev_info->real_dev->name);`
394
395			`/* now show all PRIORITY mappings relating to this VLAN */`
396			`cnt += sprintf(buf + cnt, "\nINGRESS priority mappings: 0:%lu 1:%lu 2:%lu 3:%lu 4:%lu 5:%lu 6:%lu 7:%lu\n",`
397			`dev_info->ingress_priority_map[0],`
398			`dev_info->ingress_priority_map[1],`
399			`dev_info->ingress_priority_map[2],`
400			`dev_info->ingress_priority_map[3],`
401			`dev_info->ingress_priority_map[4],`
402			`dev_info->ingress_priority_map[5],`
403			`dev_info->ingress_priority_map[6],`
404			`dev_info->ingress_priority_map[7]);`
405
406			`if ((cnt + 100) > VLAN_PROC_BUFSZ) {`
407			`if ((cnt + strlen(term_msg)) >= VLAN_PROC_BUFSZ) {`
408			`/* should never get here */`
409			`return cnt;`
410			`} else {`
411			`cnt += sprintf(buf + cnt, "%s", term_msg);`
412			`return cnt;`
413			`}`
414			`}`
415
416			`cnt += sprintf(buf + cnt, "EGRESSS priority Mappings: ");`
417
418			`for (i = 0; i < 16; i++) {`
419			`mp = dev_info->egress_priority_map[i];`
420			`while (mp) {`
421			`cnt += sprintf(buf + cnt, "%lu:%hu ",`
422			`mp->priority, ((mp->vlan_qos >> 13) & 0x7));`
423
424			`if ((cnt + 100) > VLAN_PROC_BUFSZ) {`
425			`if ((cnt + strlen(term_msg)) >= VLAN_PROC_BUFSZ) {`
426			`/* should never get here */`
427			`return cnt;`
428			`} else {`
429			`cnt += sprintf(buf + cnt, "%s", term_msg);`
430			`return cnt;`
431			`}`
432			`}`
433			`mp = mp->next;`
434			`}`
435			`}`
436
437			`cnt += sprintf(buf + cnt, "\n");`
438
439			`return cnt;`
440			`}`
441
442			`#else /* No CONFIG_PROC_FS */`
443
444			`/*`
445			`* No /proc - output stubs`
446			`*/`
447
448			`int __init vlan_proc_init (void)`
449			`{`
450			`return 0;`
451			`}`
452
453			`void vlan_proc_cleanup(void)`
454			`{`
455			`return;`
456			`}`
457
458
459			`int vlan_proc_add_dev(struct net_device *vlandev)`
460			`{`
461			`return 0;`
462			`}`
463
464			`int vlan_proc_rem_dev(struct net_device *vlandev)`
465			`{`
466			`return 0;`
467			`}`
468
469			`#endif /* No CONFIG_PROC_FS */`