1 files changed, 357 insertions, 0 deletions

diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
new file mode 100644
index 000000000000..c32d27af0a3f
--- /dev/null
+++ b/net/8021q/vlanproc.c
@@ -0,0 +1,357 @@
+/******************************************************************************
+ * 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/module.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/byteorder.h>      /* htons(), etc. */
+#include <asm/uaccess.h>        /* copy_to_user */
+#include <asm/io.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 "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 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(file, &vlan_seq_ops);
+}
+
+static struct file_operations vlan_fops = {
+        .owner   = THIS_MODULE,
+        .open    = vlan_seq_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = seq_release,
+};
+
+/*
+ *      /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 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.
+ */
+
+/*
+ *      /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 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(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;
+                        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->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 "%s: dev: %p\n", __FUNCTION__, 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 ****************************************/
+
+/*
+ * The following few functions build the content of /proc/net/vlan/config
+ */
+
+/* starting at dev, find a VLAN device */
+static struct net_device *vlan_skip(struct net_device *dev) 
+{
+        while (dev && !(dev->priv_flags & IFF_802_1Q_VLAN)) 
+                dev = dev->next;
+
+        return dev;
+}
+
+/* start read of /proc/net/vlan/config */ 
+static void *vlan_seq_start(struct seq_file *seq, loff_t *pos)
+{
+        struct net_device *dev;
+        loff_t i = 1;
+
+        read_lock(&dev_base_lock);
+
+        if (*pos == 0)
+                return SEQ_START_TOKEN;
+        
+        for (dev = vlan_skip(dev_base); dev && i < *pos; 
+             dev = vlan_skip(dev->next), ++i);
+                
+        return  (i == *pos) ? dev : NULL;
+} 
+
+static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+        ++*pos;
+
+        return vlan_skip((v == SEQ_START_TOKEN)  
+                            ? dev_base 
+                            : ((struct net_device *)v)->next);
+}
+
+static void vlan_seq_stop(struct seq_file *seq, void *v)
+{
+        read_unlock(&dev_base_lock);
+}
+
+static int vlan_seq_show(struct seq_file *seq, void *v)
+{
+        if (v == SEQ_START_TOKEN) {
+                const char *nmtype = NULL;
+
+                seq_puts(seq, "VLAN Dev name     | VLAN ID\n");
+
+                if (vlan_name_type < ARRAY_SIZE(vlan_name_type_str))
+                    nmtype =  vlan_name_type_str[vlan_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;
+        static const char fmt[] = "%30s %12lu\n";
+        int i;
+
+        if ((vlandev == NULL) || (!(vlandev->priv_flags & IFF_802_1Q_VLAN)))
+                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);
+
+
+        stats = vlan_dev_get_stats(vlandev);
+
+        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:%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]);
+
+        seq_printf(seq, "EGRESSS 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, "%lu:%hu ",
+                                   mp->priority, ((mp->vlan_qos >> 13) & 0x7));
+                        mp = mp->next;
+                }
+        }
+        seq_puts(seq, "\n");
+
+        return 0;
+}