wext: refactor
Refactor wext to * split out iwpriv handling * split out iwspy handling * split out procfs support * allow cfg80211 to have wireless extensions compat code w/o CONFIG_WIRELESS_EXT After this, drivers need to - select WIRELESS_EXT - for wext support - select WEXT_PRIV - for iwpriv support - select WEXT_SPY - for iwspy support except cfg80211 -- which gets new hooks in wext-core.c and can then get wext handlers without CONFIG_WIRELESS_EXT. Wireless extensions procfs support is auto-selected based on PROC_FS and anything that requires the wext core (i.e. WIRELESS_EXT or CFG80211_WEXT). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
committed by
John W. Linville
John W. Linville
parent
bc974f4a23
commit
3d23e349d8
155
net/wireless/wext-proc.c
Normal file
155
net/wireless/wext-proc.c
Normal file
@@ -0,0 +1,155 @@
|
||||
/*
|
||||
* 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;
|
||||
}
|
||||
}
|
||||
|
||||
/* ---------------------------------------------------------------- */
|
||||
/*
|
||||
* 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;
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
static void wireless_dev_seq_stop(struct seq_file *seq, void *v)
|
||||
{
|
||||
rtnl_unlock();
|
||||
}
|
||||
|
||||
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));
|
||||
}
|
||||
|
||||
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 wext_proc_init(struct net *net)
|
||||
{
|
||||
/* Create /proc/net/wireless entry */
|
||||
if (!proc_net_fops_create(net, "wireless", S_IRUGO, &wireless_seq_fops))
|
||||
return -ENOMEM;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void wext_proc_exit(struct net *net)
|
||||
{
|
||||
proc_net_remove(net, "wireless");
|
||||
}
|
||||
Reference in New Issue
Block a user