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Release 4.15 net/wireless/wext-proc.c

Directory: net/wireless
/*
 * This file implement the Wireless Extensions proc API.
 *
 * Authors :    Jean Tourrilhes - HPL - <jt@hpl.hp.com>
 * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
 *
 * (As all part of the Linux kernel, this file is GPL)
 */

/*
 * The /proc/net/wireless file is a human readable user-space interface
 * exporting various wireless specific statistics from the wireless devices.
 * This is the most popular part of the Wireless Extensions ;-)
 *
 * This interface is a pure clone of /proc/net/dev (in net/core/dev.c).
 * The content of the file is basically the content of "struct iw_statistics".
 */

#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/wireless.h>
#include <linux/netdevice.h>
#include <linux/rtnetlink.h>
#include <net/iw_handler.h>
#include <net/wext.h>



static void wireless_seq_printf_stats(struct seq_file *seq, struct net_device *dev) { /* Get stats from the driver */ struct iw_statistics *stats = get_wireless_stats(dev); static struct iw_statistics nullstats = {}; /* show device if it's wireless regardless of current stats */ if (!stats) { #ifdef CONFIG_WIRELESS_EXT if (dev->wireless_handlers) stats = &nullstats; #endif #ifdef CONFIG_CFG80211 if (dev->ieee80211_ptr) stats = &nullstats; #endif } if (stats) { seq_printf(seq, "%6s: %04x %3d%c %3d%c %3d%c %6d %6d %6d " "%6d %6d %6d\n", dev->name, stats->status, stats->qual.qual, stats->qual.updated & IW_QUAL_QUAL_UPDATED ? '.' : ' ', ((__s32) stats->qual.level) - ((stats->qual.updated & IW_QUAL_DBM) ? 0x100 : 0), stats->qual.updated & IW_QUAL_LEVEL_UPDATED ? '.' : ' ', ((__s32) stats->qual.noise) - ((stats->qual.updated & IW_QUAL_DBM) ? 0x100 : 0), stats->qual.updated & IW_QUAL_NOISE_UPDATED ? '.' : ' ', stats->discard.nwid, stats->discard.code, stats->discard.fragment, stats->discard.retries, stats->discard.misc, stats->miss.beacon); if (stats != &nullstats) stats->qual.updated &= ~IW_QUAL_ALL_UPDATED; } }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg244100.00%1100.00%
Total244100.00%1100.00%

/* ---------------------------------------------------------------- */ /* * Print info for /proc/net/wireless (print all entries) */
static int wireless_dev_seq_show(struct seq_file *seq, void *v) { might_sleep(); if (v == SEQ_START_TOKEN) seq_printf(seq, "Inter-| sta-| Quality | Discarded " "packets | Missed | WE\n" " face | tus | link level noise | nwid " "crypt frag retry misc | beacon | %d\n", WIRELESS_EXT); else wireless_seq_printf_stats(seq, v); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg47100.00%1100.00%
Total47100.00%1100.00%


static void *wireless_dev_seq_start(struct seq_file *seq, loff_t *pos) { struct net *net = seq_file_net(seq); loff_t off; struct net_device *dev; rtnl_lock(); if (!*pos) return SEQ_START_TOKEN; off = 1; for_each_netdev(net, dev) if (off++ == *pos) return dev; return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg70100.00%1100.00%
Total70100.00%1100.00%


static void *wireless_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct net *net = seq_file_net(seq); ++*pos; return v == SEQ_START_TOKEN ? first_net_device(net) : next_net_device(v); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg49100.00%1100.00%
Total49100.00%1100.00%


static void wireless_dev_seq_stop(struct seq_file *seq, void *v) { rtnl_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg18100.00%1100.00%
Total18100.00%1100.00%

static const struct seq_operations wireless_seq_ops = { .start = wireless_dev_seq_start, .next = wireless_dev_seq_next, .stop = wireless_dev_seq_stop, .show = wireless_dev_seq_show, };
static int seq_open_wireless(struct inode *inode, struct file *file) { return seq_open_net(inode, file, &wireless_seq_ops, sizeof(struct seq_net_private)); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg33100.00%1100.00%
Total33100.00%1100.00%

static const struct file_operations wireless_seq_fops = { .owner = THIS_MODULE, .open = seq_open_wireless, .read = seq_read, .llseek = seq_lseek, .release = seq_release_net, };
int __net_init wext_proc_init(struct net *net) { /* Create /proc/net/wireless entry */ if (!proc_create("wireless", S_IRUGO, net->proc_net, &wireless_seq_fops)) return -ENOMEM; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg3083.33%133.33%
Gao Feng513.89%133.33%
Alexey Dobriyan12.78%133.33%
Total36100.00%3100.00%


void __net_exit wext_proc_exit(struct net *net) { remove_proc_entry("wireless", net->proc_net); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg1470.00%133.33%
Gao Feng525.00%133.33%
Alexey Dobriyan15.00%133.33%
Total20100.00%3100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg59498.02%125.00%
Gao Feng101.65%250.00%
Alexey Dobriyan20.33%125.00%
Total606100.00%4100.00%
Directory: net/wireless
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