lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[WIRELESS]: Remove wext over netlink.

Browse Source 
As scheduled, this patch removes the pointless wext over netlink code.

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
2007-04-23 12:20:55 -07:00
committed by David S. Miller
parent 704232c271
commit 9e101eab15
5 changed files with 0 additions and 798 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
net/core/rtnetlink.c
View File

@ -51,10 +51,6 @@
#include <net/pkt_sched.h>
#include <net/fib_rules.h>
#include <net/rtnetlink.h>
#ifdef CONFIG_NET_WIRELESS_RTNETLINK
#include <linux/wireless.h>
#include <net/iw_handler.h>
#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
struct rtnl_link
{
@ -684,17 +680,6 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
modified = 1;
}
#ifdef CONFIG_NET_WIRELESS_RTNETLINK
if (tb[IFLA_WIRELESS]) {
/* Call Wireless Extensions.
* Various stuff checked in there... */
err = wireless_rtnetlink_set(dev, nla_data(tb[IFLA_WIRELESS]),
nla_len(tb[IFLA_WIRELESS]));
if (err < 0)
goto errout_dev;
}
#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
if (tb[IFLA_BROADCAST]) {
nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
send_addr_notify = 1;
@ -758,22 +743,6 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
} else
return -EINVAL;
#ifdef CONFIG_NET_WIRELESS_RTNETLINK
if (tb[IFLA_WIRELESS]) {
/* Call Wireless Extensions. We need to know the size before
* we can alloc. Various stuff checked in there... */
err = wireless_rtnetlink_get(dev, nla_data(tb[IFLA_WIRELESS]),
nla_len(tb[IFLA_WIRELESS]),
&iw_buf, &iw_buf_len);
if (err < 0)
goto errout;
/* Payload is at an offset in buffer */
iw = iw_buf + IW_EV_POINT_OFF;
}
#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
nskb = nlmsg_new(if_nlmsg_size(iw_buf_len), GFP_KERNEL);
if (nskb == NULL) {
err = -ENOBUFS;

735
net/core/wireless.c
View File

@ -104,12 +104,10 @@
/* Debugging stuff */
#undef WE_IOCTL_DEBUG /* Debug IOCTL API */
#undef WE_RTNETLINK_DEBUG /* Debug RtNetlink API */
#undef WE_EVENT_DEBUG /* Debug Event dispatcher */
#undef WE_SPY_DEBUG /* Debug enhanced spy support */
/* Options */
//CONFIG_NET_WIRELESS_RTNETLINK /* Wireless requests over RtNetlink */
#define WE_EVENT_RTNETLINK /* Propagate events using RtNetlink */
#define WE_SET_EVENT /* Generate an event on some set commands */
@ -1145,739 +1143,6 @@ int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd)
return -EINVAL;
}
/********************** RTNETLINK REQUEST API **********************/
/*
* The alternate user space API to configure all those Wireless Extensions
* is through RtNetlink.
* This API support only the new driver API (iw_handler).
*
* This RtNetlink API use the same query/reply model as the ioctl API.
* Maximum effort has been done to fit in the RtNetlink model, and
* we support both RtNetlink Set and RtNelink Get operations.
* On the other hand, we don't offer Dump operations because of the
* following reasons :
* o Large number of parameters, most optional
* o Large size of some parameters (> 100 bytes)
* o Each parameters need to be extracted from hardware
* o Scan requests can take seconds and disable network activity.
* Because of this high cost/overhead, we want to return only the
* parameters the user application is really interested in.
* We could offer partial Dump using the IW_DESCR_FLAG_DUMP flag.
*
* The API uses the standard RtNetlink socket. When the RtNetlink code
* find a IFLA_WIRELESS field in a RtNetlink SET_LINK request,
* it calls here.
*/
#ifdef CONFIG_NET_WIRELESS_RTNETLINK
/* ---------------------------------------------------------------- */
/*
* Wrapper to call a standard Wireless Extension GET handler.
* We do various checks and call the handler with the proper args.
*/
static int rtnetlink_standard_get(struct net_device * dev,
struct iw_event * request,
int request_len,
iw_handler handler,
char ** p_buf,
int * p_len)
{
const struct iw_ioctl_description * descr = NULL;
unsigned int cmd;
union iwreq_data * wrqu;
int hdr_len;
struct iw_request_info info;
char * buffer = NULL;
int buffer_size = 0;
int ret = -EINVAL;
/* Get the description of the Request */
cmd = request->cmd;
if ((cmd - SIOCIWFIRST) >= standard_ioctl_num)
return -EOPNOTSUPP;
descr = &(standard_ioctl[cmd - SIOCIWFIRST]);
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Found standard handler for 0x%04X\n",
dev->name, cmd);
printk(KERN_DEBUG "%s (WE.r) : Header type : %d, Token type : %d, size : %d, token : %d\n", dev->name, descr->header_type, descr->token_type, descr->token_size, descr->max_tokens);
#endif /* WE_RTNETLINK_DEBUG */
/* Check if wrqu is complete */
hdr_len = event_type_size[descr->header_type];
if (request_len < hdr_len) {
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG
"%s (WE.r) : Wireless request too short (%d)\n",
dev->name, request_len);
#endif /* WE_RTNETLINK_DEBUG */
return -EINVAL;
}
/* Prepare the call */
info.cmd = cmd;
info.flags = 0;
/* Check if we have extra data in the reply or not */
if (descr->header_type != IW_HEADER_TYPE_POINT) {
/* Create the kernel buffer that we will return.
* It's at an offset to match the TYPE_POINT case... */
buffer_size = request_len + IW_EV_POINT_OFF;
buffer = kmalloc(buffer_size, GFP_KERNEL);
if (buffer == NULL) {
return -ENOMEM;
}
/* Copy event data */
memcpy(buffer + IW_EV_POINT_OFF, request, request_len);
/* Use our own copy of wrqu */
wrqu = (union iwreq_data *) (buffer + IW_EV_POINT_OFF
+ IW_EV_LCP_PK_LEN);
/* No extra arguments. Trivial to handle */
ret = handler(dev, &info, wrqu, NULL);
} else {
union iwreq_data wrqu_point;
char * extra = NULL;
int extra_size = 0;
/* Get a temp copy of wrqu (skip pointer) */
memcpy(((char *) &wrqu_point) + IW_EV_POINT_OFF,
((char *) request) + IW_EV_LCP_PK_LEN,
IW_EV_POINT_LEN - IW_EV_LCP_PK_LEN);
/* Calculate space needed by arguments. Always allocate
* for max space. Easier, and won't last long... */
extra_size = descr->max_tokens * descr->token_size;
/* Support for very large requests */
if ((descr->flags & IW_DESCR_FLAG_NOMAX) &&
(wrqu_point.data.length > descr->max_tokens))
extra_size = (wrqu_point.data.length
* descr->token_size);
buffer_size = extra_size + IW_EV_POINT_PK_LEN + IW_EV_POINT_OFF;
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Malloc %d bytes (%d bytes)\n",
dev->name, extra_size, buffer_size);
#endif /* WE_RTNETLINK_DEBUG */
/* Create the kernel buffer that we will return */
buffer = kmalloc(buffer_size, GFP_KERNEL);
if (buffer == NULL) {
return -ENOMEM;
}
/* Put wrqu in the right place (just before extra).
* Leave space for IWE header and dummy pointer...
* Note that IW_EV_LCP_PK_LEN==4 bytes, so it's still aligned.
*/
memcpy(buffer + IW_EV_LCP_PK_LEN + IW_EV_POINT_OFF,
((char *) &wrqu_point) + IW_EV_POINT_OFF,
IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
wrqu = (union iwreq_data *) (buffer + IW_EV_LCP_PK_LEN);
/* Extra comes logically after that. Offset +12 bytes. */
extra = buffer + IW_EV_POINT_OFF + IW_EV_POINT_PK_LEN;
/* Call the handler */
ret = handler(dev, &info, wrqu, extra);
/* Calculate real returned length */
extra_size = (wrqu->data.length * descr->token_size);
/* Re-adjust reply size */
request->len = extra_size + IW_EV_POINT_PK_LEN;
/* Put the iwe header where it should, i.e. scrap the
* dummy pointer. */
memcpy(buffer + IW_EV_POINT_OFF, request, IW_EV_LCP_PK_LEN);
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Reply 0x%04X, hdr_len %d, tokens %d, extra_size %d, buffer_size %d\n", dev->name, cmd, hdr_len, wrqu->data.length, extra_size, buffer_size);
#endif /* WE_RTNETLINK_DEBUG */
/* Check if there is enough buffer up there */
if (wrqu_point.data.length < wrqu->data.length)
ret = -E2BIG;
}
/* Return the buffer to the caller */
if (!ret) {
*p_buf = buffer;
*p_len = request->len;
} else {
/* Cleanup */
if (buffer)
kfree(buffer);
}
return ret;
}
/* ---------------------------------------------------------------- */
/*
* Wrapper to call a standard Wireless Extension SET handler.
* We do various checks and call the handler with the proper args.
*/
static inline int rtnetlink_standard_set(struct net_device * dev,
struct iw_event * request,
int request_len,
iw_handler handler)
{
const struct iw_ioctl_description * descr = NULL;
unsigned int cmd;
union iwreq_data * wrqu;
union iwreq_data wrqu_point;
int hdr_len;
char * extra = NULL;
int extra_size = 0;
struct iw_request_info info;
int ret = -EINVAL;
/* Get the description of the Request */
cmd = request->cmd;
if ((cmd - SIOCIWFIRST) >= standard_ioctl_num)
return -EOPNOTSUPP;
descr = &(standard_ioctl[cmd - SIOCIWFIRST]);
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Found standard SET handler for 0x%04X\n",
dev->name, cmd);
printk(KERN_DEBUG "%s (WE.r) : Header type : %d, Token type : %d, size : %d, token : %d\n", dev->name, descr->header_type, descr->token_type, descr->token_size, descr->max_tokens);
#endif /* WE_RTNETLINK_DEBUG */
/* Extract fixed header from request. This is properly aligned. */
wrqu = (union iwreq_data *) (((char *) request) + IW_EV_LCP_PK_LEN);
/* Check if wrqu is complete */
hdr_len = event_type_pk_size[descr->header_type];
if (request_len < hdr_len) {
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG
"%s (WE.r) : Wireless request too short (%d)\n",
dev->name, request_len);
#endif /* WE_RTNETLINK_DEBUG */
return -EINVAL;
}
/* Prepare the call */
info.cmd = cmd;
info.flags = 0;
/* Check if we have extra data in the request or not */
if (descr->header_type != IW_HEADER_TYPE_POINT) {
/* No extra arguments. Trivial to handle */
ret = handler(dev, &info, wrqu, NULL);
} else {
int extra_len;
/* Put wrqu in the right place (skip pointer) */
memcpy(((char *) &wrqu_point) + IW_EV_POINT_OFF,
wrqu, IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
/* Don't forget about the event code... */
wrqu = &wrqu_point;
/* Check if number of token fits within bounds */
if (wrqu_point.data.length > descr->max_tokens)
return -E2BIG;
if (wrqu_point.data.length < descr->min_tokens)
return -EINVAL;
/* Real length of payload */
extra_len = wrqu_point.data.length * descr->token_size;
/* Check if request is self consistent */
if ((request_len - hdr_len) < extra_len) {
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Wireless request data too short (%d)\n",
dev->name, extra_size);
#endif /* WE_RTNETLINK_DEBUG */
return -EINVAL;
}
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Malloc %d bytes\n",
dev->name, extra_size);
#endif /* WE_RTNETLINK_DEBUG */
/* Always allocate for max space. Easier, and won't last
* long... */
extra_size = descr->max_tokens * descr->token_size;
extra = kmalloc(extra_size, GFP_KERNEL);
if (extra == NULL)
return -ENOMEM;
/* Copy extra in aligned buffer */
memcpy(extra, ((char *) request) + hdr_len, extra_len);
/* Call the handler */
ret = handler(dev, &info, &wrqu_point, extra);
}
#ifdef WE_SET_EVENT
/* Generate an event to notify listeners of the change */
if ((descr->flags & IW_DESCR_FLAG_EVENT) &&
((ret == 0) || (ret == -EIWCOMMIT))) {
if (descr->flags & IW_DESCR_FLAG_RESTRICT)
/* If the event is restricted, don't
* export the payload */
wireless_send_event(dev, cmd, wrqu, NULL);
else
wireless_send_event(dev, cmd, wrqu, extra);
}
#endif /* WE_SET_EVENT */
/* Cleanup - I told you it wasn't that long ;-) */
if (extra)
kfree(extra);
/* Call commit handler if needed and defined */
if (ret == -EIWCOMMIT)
ret = call_commit_handler(dev);
return ret;
}
/* ---------------------------------------------------------------- */
/*
* Wrapper to call a private Wireless Extension GET handler.
* Same as above...
* It's not as nice and slimline as the standard wrapper. The cause
* is struct iw_priv_args, which was not really designed for the
* job we are going here.
*
* IMPORTANT : This function prevent to set and get data on the same
* IOCTL and enforce the SET/GET convention. Not doing it would be
* far too hairy...
* If you need to set and get data at the same time, please don't use
* a iw_handler but process it in your ioctl handler (i.e. use the
* old driver API).
*/
static inline int rtnetlink_private_get(struct net_device * dev,
struct iw_event * request,
int request_len,
iw_handler handler,
char ** p_buf,
int * p_len)
{
const struct iw_priv_args * descr = NULL;
unsigned int cmd;
union iwreq_data * wrqu;
int hdr_len;
struct iw_request_info info;
int extra_size = 0;
int i;
char * buffer = NULL;
int buffer_size = 0;
int ret = -EINVAL;
/* Get the description of the Request */
cmd = request->cmd;
for (i = 0; i < dev->wireless_handlers->num_private_args; i++)
if (cmd == dev->wireless_handlers->private_args[i].cmd) {
descr = &(dev->wireless_handlers->private_args[i]);
break;
}
if (descr == NULL)
return -EOPNOTSUPP;
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Found private handler for 0x%04X\n",
dev->name, cmd);
printk(KERN_DEBUG "%s (WE.r) : Name %s, set %X, get %X\n",
dev->name, descr->name, descr->set_args, descr->get_args);
#endif /* WE_RTNETLINK_DEBUG */
/* Compute the max size of the get arguments */
extra_size = get_priv_size(descr->get_args);
/* Does it fits in wrqu ? */
if ((descr->get_args & IW_PRIV_SIZE_FIXED) &&
(extra_size <= IFNAMSIZ)) {
hdr_len = extra_size;
extra_size = 0;
} else {
hdr_len = IW_EV_POINT_PK_LEN;
}
/* Check if wrqu is complete */
if (request_len < hdr_len) {
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG
"%s (WE.r) : Wireless request too short (%d)\n",
dev->name, request_len);
#endif /* WE_RTNETLINK_DEBUG */
return -EINVAL;
}
/* Prepare the call */
info.cmd = cmd;
info.flags = 0;
/* Check if we have a pointer to user space data or not. */
if (extra_size == 0) {
/* Create the kernel buffer that we will return.
* It's at an offset to match the TYPE_POINT case... */
buffer_size = request_len + IW_EV_POINT_OFF;
buffer = kmalloc(buffer_size, GFP_KERNEL);
if (buffer == NULL) {
return -ENOMEM;
}
/* Copy event data */
memcpy(buffer + IW_EV_POINT_OFF, request, request_len);
/* Use our own copy of wrqu */
wrqu = (union iwreq_data *) (buffer + IW_EV_POINT_OFF
+ IW_EV_LCP_PK_LEN);
/* No extra arguments. Trivial to handle */
ret = handler(dev, &info, wrqu, (char *) wrqu);
} else {
char * extra;
/* Buffer for full reply */
buffer_size = extra_size + IW_EV_POINT_PK_LEN + IW_EV_POINT_OFF;
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Malloc %d bytes (%d bytes)\n",
dev->name, extra_size, buffer_size);
#endif /* WE_RTNETLINK_DEBUG */
/* Create the kernel buffer that we will return */
buffer = kmalloc(buffer_size, GFP_KERNEL);
if (buffer == NULL) {
return -ENOMEM;
}
/* Put wrqu in the right place (just before extra).
* Leave space for IWE header and dummy pointer...
* Note that IW_EV_LCP_PK_LEN==4 bytes, so it's still aligned.
*/
memcpy(buffer + IW_EV_LCP_PK_LEN + IW_EV_POINT_OFF,
((char *) request) + IW_EV_LCP_PK_LEN,
IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
wrqu = (union iwreq_data *) (buffer + IW_EV_LCP_PK_LEN);
/* Extra comes logically after that. Offset +12 bytes. */
extra = buffer + IW_EV_POINT_OFF + IW_EV_POINT_PK_LEN;
/* Call the handler */
ret = handler(dev, &info, wrqu, extra);
/* Adjust for the actual length if it's variable,
* avoid leaking kernel bits outside. */
if (!(descr->get_args & IW_PRIV_SIZE_FIXED))
extra_size = adjust_priv_size(descr->get_args, wrqu);
/* Re-adjust reply size */
request->len = extra_size + IW_EV_POINT_PK_LEN;
/* Put the iwe header where it should, i.e. scrap the
* dummy pointer. */
memcpy(buffer + IW_EV_POINT_OFF, request, IW_EV_LCP_PK_LEN);
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Reply 0x%04X, hdr_len %d, tokens %d, extra_size %d, buffer_size %d\n", dev->name, cmd, hdr_len, wrqu->data.length, extra_size, buffer_size);
#endif /* WE_RTNETLINK_DEBUG */
}
/* Return the buffer to the caller */
if (!ret) {
*p_buf = buffer;
*p_len = request->len;
} else {
/* Cleanup */
if (buffer)
kfree(buffer);
}
return ret;
}
/* ---------------------------------------------------------------- */
/*
* Wrapper to call a private Wireless Extension SET handler.
* Same as above...
* It's not as nice and slimline as the standard wrapper. The cause
* is struct iw_priv_args, which was not really designed for the
* job we are going here.
*
* IMPORTANT : This function prevent to set and get data on the same
* IOCTL and enforce the SET/GET convention. Not doing it would be
* far too hairy...
* If you need to set and get data at the same time, please don't use
* a iw_handler but process it in your ioctl handler (i.e. use the
* old driver API).
*/
static inline int rtnetlink_private_set(struct net_device * dev,
struct iw_event * request,
int request_len,
iw_handler handler)
{
const struct iw_priv_args * descr = NULL;
unsigned int cmd;
union iwreq_data * wrqu;
union iwreq_data wrqu_point;
int hdr_len;
char * extra = NULL;
int extra_size = 0;
int offset = 0; /* For sub-ioctls */
struct iw_request_info info;
int i;
int ret = -EINVAL;
/* Get the description of the Request */
cmd = request->cmd;
for (i = 0; i < dev->wireless_handlers->num_private_args; i++)
if (cmd == dev->wireless_handlers->private_args[i].cmd) {
descr = &(dev->wireless_handlers->private_args[i]);
break;
}
if (descr == NULL)
return -EOPNOTSUPP;
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Found private handler for 0x%04X\n",
ifr->ifr_name, cmd);
printk(KERN_DEBUG "%s (WE.r) : Name %s, set %X, get %X\n",
dev->name, descr->name, descr->set_args, descr->get_args);
#endif /* WE_RTNETLINK_DEBUG */
/* Compute the size of the set arguments */
/* Check for sub-ioctl handler */
if (descr->name[0] == '\0')
/* Reserve one int for sub-ioctl index */
offset = sizeof(__u32);
/* Size of set arguments */
extra_size = get_priv_size(descr->set_args);
/* Does it fits in wrqu ? */
if ((descr->set_args & IW_PRIV_SIZE_FIXED) &&
(extra_size <= IFNAMSIZ)) {
hdr_len = IW_EV_LCP_PK_LEN + extra_size;
extra_size = 0;
} else {
hdr_len = IW_EV_POINT_PK_LEN;
}
/* Extract fixed header from request. This is properly aligned. */
wrqu = (union iwreq_data *) (((char *) request) + IW_EV_LCP_PK_LEN);
/* Check if wrqu is complete */
if (request_len < hdr_len) {
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG
"%s (WE.r) : Wireless request too short (%d)\n",
dev->name, request_len);
#endif /* WE_RTNETLINK_DEBUG */
return -EINVAL;
}
/* Prepare the call */
info.cmd = cmd;
info.flags = 0;
/* Check if we have a pointer to user space data or not. */
if (extra_size == 0) {
/* No extra arguments. Trivial to handle */
ret = handler(dev, &info, wrqu, (char *) wrqu);
} else {
int extra_len;
/* Put wrqu in the right place (skip pointer) */
memcpy(((char *) &wrqu_point) + IW_EV_POINT_OFF,
wrqu, IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
/* Does it fits within bounds ? */
if (wrqu_point.data.length > (descr->set_args &
IW_PRIV_SIZE_MASK))
return -E2BIG;
/* Real length of payload */
extra_len = adjust_priv_size(descr->set_args, &wrqu_point);
/* Check if request is self consistent */
if ((request_len - hdr_len) < extra_len) {
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Wireless request data too short (%d)\n",
dev->name, extra_size);
#endif /* WE_RTNETLINK_DEBUG */
return -EINVAL;
}
#ifdef WE_RTNETLINK_DEBUG
printk(KERN_DEBUG "%s (WE.r) : Malloc %d bytes\n",
dev->name, extra_size);
#endif /* WE_RTNETLINK_DEBUG */
/* Always allocate for max space. Easier, and won't last
* long... */
extra = kmalloc(extra_size, GFP_KERNEL);
if (extra == NULL)
return -ENOMEM;
/* Copy extra in aligned buffer */
memcpy(extra, ((char *) request) + hdr_len, extra_len);
/* Call the handler */
ret = handler(dev, &info, &wrqu_point, extra);
/* Cleanup - I told you it wasn't that long ;-) */
kfree(extra);
}
/* Call commit handler if needed and defined */
if (ret == -EIWCOMMIT)
ret = call_commit_handler(dev);
return ret;
}
/* ---------------------------------------------------------------- */
/*
* Main RtNetlink dispatcher. Called from the main networking code
* (do_getlink() in net/core/rtnetlink.c).
* Check the type of Request and call the appropriate wrapper...
*/
int wireless_rtnetlink_get(struct net_device * dev,
char * data,
int len,
char ** p_buf,
int * p_len)
{
struct iw_event * request = (struct iw_event *) data;
iw_handler handler;
/* Check length */
if (len < IW_EV_LCP_PK_LEN) {
printk(KERN_DEBUG "%s (WE.r) : RtNetlink request too short (%d)\n",
dev->name, len);
return -EINVAL;
}
/* ReCheck length (len may have padding) */
if (request->len > len) {
printk(KERN_DEBUG "%s (WE.r) : RtNetlink request len invalid (%d-%d)\n",
dev->name, request->len, len);
return -EINVAL;
}
/* Only accept GET requests in here */
if (!IW_IS_GET(request->cmd))
return -EOPNOTSUPP;
/* If command is `get the encoding parameters', check if
* the user has the right to do it */
if (request->cmd == SIOCGIWENCODE ||
request->cmd == SIOCGIWENCODEEXT) {
if (!capable(CAP_NET_ADMIN))
return -EPERM;
}
/* Special cases */
if (request->cmd == SIOCGIWSTATS)
/* Get Wireless Stats */
return rtnetlink_standard_get(dev,
request,
request->len,
&iw_handler_get_iwstats,
p_buf, p_len);
if (request->cmd == SIOCGIWPRIV) {
/* Check if we have some wireless handlers defined */
if (dev->wireless_handlers == NULL)
return -EOPNOTSUPP;
/* Get Wireless Stats */
return rtnetlink_standard_get(dev,
request,
request->len,
&iw_handler_get_private,
p_buf, p_len);
}
/* Basic check */
if (!netif_device_present(dev))
return -ENODEV;
/* Try to find the handler */
handler = get_handler(dev, request->cmd);
if (handler != NULL) {
/* Standard and private are not the same */
if (request->cmd < SIOCIWFIRSTPRIV)
return rtnetlink_standard_get(dev,
request,
request->len,
handler,
p_buf, p_len);
else
return rtnetlink_private_get(dev,
request,
request->len,
handler,
p_buf, p_len);
}
return -EOPNOTSUPP;
}
/* ---------------------------------------------------------------- */
/*
* Main RtNetlink dispatcher. Called from the main networking code
* (do_setlink() in net/core/rtnetlink.c).
* Check the type of Request and call the appropriate wrapper...
*/
int wireless_rtnetlink_set(struct net_device * dev,
char * data,
int len)
{
struct iw_event * request = (struct iw_event *) data;
iw_handler handler;
/* Check length */
if (len < IW_EV_LCP_PK_LEN) {
printk(KERN_DEBUG "%s (WE.r) : RtNetlink request too short (%d)\n",
dev->name, len);
return -EINVAL;
}
/* ReCheck length (len may have padding) */
if (request->len > len) {
printk(KERN_DEBUG "%s (WE.r) : RtNetlink request len invalid (%d-%d)\n",
dev->name, request->len, len);
return -EINVAL;
}
/* Only accept SET requests in here */
if (!IW_IS_SET(request->cmd))
return -EOPNOTSUPP;
/* Basic check */
if (!netif_device_present(dev))
return -ENODEV;
/* New driver API : try to find the handler */
handler = get_handler(dev, request->cmd);
if (handler != NULL) {
/* Standard and private are not the same */
if (request->cmd < SIOCIWFIRSTPRIV)
return rtnetlink_standard_set(dev,
request,
request->len,
handler);
else
return rtnetlink_private_set(dev,
request,
request->len,
handler);
}
return -EOPNOTSUPP;
}
#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
/************************* EVENT PROCESSING *************************/
/*