From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- net/8021q/vlanproc.c | 357 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 357 insertions(+) create mode 100644 net/8021q/vlanproc.c (limited to 'net/8021q/vlanproc.c') diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c new file mode 100644 index 00000000000..c32d27af0a3 --- /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, coppied from wanproc.c + * by: Gene Kozin + * + * 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 +#include +#include /* offsetof(), etc. */ +#include /* return codes */ +#include +#include /* kmalloc(), kfree() */ +#include /* verify_area(), etc. */ +#include /* inline mem*, str* functions */ +#include /* __initfunc et al. */ +#include /* htons(), etc. */ +#include /* copy_to_user */ +#include +#include +#include +#include +#include +#include +#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 + * entry for each device + */ + +/* + * Generic /proc/net/vlan/ 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/ 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; +} -- cgit v1.2.3