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[WEXT]: Clean up how wext is called.

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This patch cleans up the call paths from the core code into wext.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg 2007-04-26 20:43:56 -07:00 committed by David S. Miller
parent 11433ee450
commit 295f4a1fa3
4 changed files with 53 additions and 44 deletions
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11
include/net/iw_handler.h
View file

@ -431,16 +431,7 @@ struct iw_public_data {
* Those may be called only within the kernel.
*/
/* First : function strictly used inside the kernel */
/* Handle /proc/net/wireless, called in net/code/dev.c */
extern int dev_get_wireless_info(char * buffer, char **start, off_t offset,
int length);
/* Handle IOCTLs, called in net/core/dev.c */
extern int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd);
/* Second : functions that may be called by driver modules */
/* functions that may be called by driver modules */
/* Send a single event to user space */
extern void wireless_send_event(struct net_device * dev,

24
include/net/wext.h Normal file
View file

@ -0,0 +1,24 @@
#ifndef __NET_WEXT_H
#define __NET_WEXT_H
/*
* wireless extensions interface to the core code
*/
#ifdef CONFIG_WIRELESS_EXT
extern int wext_proc_init(void);
extern int wext_handle_ioctl(struct ifreq *ifr, unsigned int cmd,
void __user *arg);
#else
static inline int wext_proc_init()
{
return 0;
}
static inline int wext_handle_ioctl(struct ifreq *ifr, unsigned int cmd,
void __user *arg)
{
return -EINVAL;
}
#endif
#endif /* __NET_WEXT_H */

34
net/core/dev.c
View file

@ -109,7 +109,7 @@
#include <linux/netpoll.h>
#include <linux/rcupdate.h>
#include <linux/delay.h>
#include <linux/wireless.h>
#include <net/wext.h>
#include <net/iw_handler.h>
#include <asm/current.h>
#include <linux/audit.h>
@ -2348,12 +2348,6 @@ static const struct file_operations ptype_seq_fops = {
};
#ifdef CONFIG_WIRELESS_EXT
extern int wireless_proc_init(void);
#else
#define wireless_proc_init() 0
#endif
static int __init dev_proc_init(void)
{
int rc = -ENOMEM;
@ -2365,7 +2359,7 @@ static int __init dev_proc_init(void)
if (!proc_net_fops_create("ptype", S_IRUGO, &ptype_seq_fops))
goto out_dev2;
if (wireless_proc_init())
if (wext_proc_init())
goto out_softnet;
rc = 0;
out:
@ -2923,29 +2917,9 @@ int dev_ioctl(unsigned int cmd, void __user *arg)
ret = -EFAULT;
return ret;
}
#ifdef CONFIG_WIRELESS_EXT
/* Take care of Wireless Extensions */
if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
/* If command is `set a parameter', or
* `get the encoding parameters', check if
* the user has the right to do it */
if (IW_IS_SET(cmd) || cmd == SIOCGIWENCODE
|| cmd == SIOCGIWENCODEEXT) {
if (!capable(CAP_NET_ADMIN))
return -EPERM;
}
dev_load(ifr.ifr_name);
rtnl_lock();
/* Follow me in net/wireless/wext.c */
ret = wireless_process_ioctl(&ifr, cmd);
rtnl_unlock();
if (IW_IS_GET(cmd) &&
copy_to_user(arg, &ifr,
sizeof(struct ifreq)))
ret = -EFAULT;
return ret;
}
#endif /* CONFIG_WIRELESS_EXT */
if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)
return wext_handle_ioctl(&ifr, cmd, arg);
return -EINVAL;
}
}

28
net/wireless/wext.c
View file

@ -97,6 +97,7 @@
#include <linux/wireless.h> /* Pretty obvious */
#include <net/iw_handler.h> /* New driver API */
#include <net/netlink.h>
#include <net/wext.h>
#include <asm/uaccess.h> /* copy_to_user() */
@ -696,7 +697,7 @@ static const struct file_operations wireless_seq_fops = {
.release = seq_release,
};
int __init wireless_proc_init(void)
int __init wext_proc_init(void)
{
/* Create /proc/net/wireless entry */
if (!proc_net_fops_create("wireless", S_IRUGO, &wireless_seq_fops))
@ -1075,11 +1076,10 @@ static inline int ioctl_private_call(struct net_device * dev,
/* ---------------------------------------------------------------- */
/*
* Main IOCTl dispatcher. Called from the main networking code
* (dev_ioctl() in net/core/dev.c).
* Main IOCTl dispatcher.
* Check the type of IOCTL and call the appropriate wrapper...
*/
int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd)
static int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd)
{
struct net_device *dev;
iw_handler handler;
@ -1143,6 +1143,26 @@ int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd)
return -EINVAL;
}
/* entry point from dev ioctl */
int wext_handle_ioctl(struct ifreq *ifr, unsigned int cmd,
void __user *arg)
{
int ret;
/* If command is `set a parameter', or
* `get the encoding parameters', check if
* the user has the right to do it */
if (IW_IS_SET(cmd) || cmd == SIOCGIWENCODE || cmd == SIOCGIWENCODEEXT)
if (!capable(CAP_NET_ADMIN))
return -EPERM;
dev_load(ifr->ifr_name);
rtnl_lock();
ret = wireless_process_ioctl(ifr, cmd);
rtnl_unlock();
if (IW_IS_GET(cmd) && copy_to_user(arg, ifr, sizeof(struct ifreq)))
return -EFAULT;
return ret;
}
/************************* EVENT PROCESSING *************************/
/*