2009-02-10 13:25:55 -07:00
|
|
|
/*
|
|
|
|
* cfg80211 scan result handling
|
|
|
|
*
|
|
|
|
* Copyright 2008 Johannes Berg <johannes@sipsolutions.net>
|
|
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/netdevice.h>
|
|
|
|
#include <linux/wireless.h>
|
|
|
|
#include <linux/nl80211.h>
|
|
|
|
#include <linux/etherdevice.h>
|
|
|
|
#include <net/arp.h>
|
|
|
|
#include <net/cfg80211.h>
|
|
|
|
#include <net/iw_handler.h>
|
|
|
|
#include "core.h"
|
|
|
|
#include "nl80211.h"
|
2009-07-27 04:01:53 -06:00
|
|
|
#include "wext-compat.h"
|
2009-02-10 13:25:55 -07:00
|
|
|
|
2009-07-23 04:14:29 -06:00
|
|
|
#define IEEE80211_SCAN_RESULT_EXPIRE (15 * HZ)
|
2009-02-10 13:25:55 -07:00
|
|
|
|
2009-08-20 13:36:16 -06:00
|
|
|
void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak)
|
2009-02-10 13:25:55 -07:00
|
|
|
{
|
2009-07-06 19:56:11 -06:00
|
|
|
struct cfg80211_scan_request *request;
|
2009-02-10 13:25:55 -07:00
|
|
|
struct net_device *dev;
|
|
|
|
#ifdef CONFIG_WIRELESS_EXT
|
|
|
|
union iwreq_data wrqu;
|
|
|
|
#endif
|
|
|
|
|
2009-08-20 13:36:16 -06:00
|
|
|
ASSERT_RDEV_LOCK(rdev);
|
|
|
|
|
2009-07-06 19:56:11 -06:00
|
|
|
request = rdev->scan_req;
|
|
|
|
|
2009-08-20 13:36:16 -06:00
|
|
|
if (!request)
|
|
|
|
return;
|
|
|
|
|
2009-07-13 16:33:35 -06:00
|
|
|
dev = request->dev;
|
2009-02-10 13:25:55 -07:00
|
|
|
|
2009-07-02 01:13:27 -06:00
|
|
|
/*
|
|
|
|
* This must be before sending the other events!
|
|
|
|
* Otherwise, wpa_supplicant gets completely confused with
|
|
|
|
* wext events.
|
|
|
|
*/
|
|
|
|
cfg80211_sme_scan_done(dev);
|
|
|
|
|
2009-07-06 19:56:11 -06:00
|
|
|
if (request->aborted)
|
2009-08-12 14:21:21 -06:00
|
|
|
nl80211_send_scan_aborted(rdev, dev);
|
2009-02-10 13:25:55 -07:00
|
|
|
else
|
2009-08-12 14:21:21 -06:00
|
|
|
nl80211_send_scan_done(rdev, dev);
|
2009-02-10 13:25:55 -07:00
|
|
|
|
|
|
|
#ifdef CONFIG_WIRELESS_EXT
|
2009-07-06 19:56:11 -06:00
|
|
|
if (!request->aborted) {
|
2009-02-10 13:25:55 -07:00
|
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
|
|
|
|
|
|
wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
dev_put(dev);
|
|
|
|
|
2009-08-12 14:21:21 -06:00
|
|
|
rdev->scan_req = NULL;
|
2009-08-20 13:36:16 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* OK. If this is invoked with "leak" then we can't
|
|
|
|
* free this ... but we've cleaned it up anyway. The
|
|
|
|
* driver failed to call the scan_done callback, so
|
|
|
|
* all bets are off, it might still be trying to use
|
|
|
|
* the scan request or not ... if it accesses the dev
|
|
|
|
* in there (it shouldn't anyway) then it may crash.
|
|
|
|
*/
|
|
|
|
if (!leak)
|
|
|
|
kfree(request);
|
2009-02-10 13:25:55 -07:00
|
|
|
}
|
2009-07-06 19:56:11 -06:00
|
|
|
|
2009-08-12 14:21:21 -06:00
|
|
|
void __cfg80211_scan_done(struct work_struct *wk)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
|
|
|
|
rdev = container_of(wk, struct cfg80211_registered_device,
|
|
|
|
scan_done_wk);
|
|
|
|
|
|
|
|
cfg80211_lock_rdev(rdev);
|
2009-08-20 13:36:16 -06:00
|
|
|
___cfg80211_scan_done(rdev, false);
|
2009-08-12 14:21:21 -06:00
|
|
|
cfg80211_unlock_rdev(rdev);
|
|
|
|
}
|
|
|
|
|
2009-07-06 19:56:11 -06:00
|
|
|
void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
|
|
|
|
{
|
|
|
|
WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req);
|
|
|
|
|
|
|
|
request->aborted = aborted;
|
|
|
|
schedule_work(&wiphy_to_dev(request->wiphy)->scan_done_wk);
|
|
|
|
}
|
2009-02-10 13:25:55 -07:00
|
|
|
EXPORT_SYMBOL(cfg80211_scan_done);
|
|
|
|
|
|
|
|
static void bss_release(struct kref *ref)
|
|
|
|
{
|
|
|
|
struct cfg80211_internal_bss *bss;
|
|
|
|
|
|
|
|
bss = container_of(ref, struct cfg80211_internal_bss, ref);
|
2009-02-10 13:25:57 -07:00
|
|
|
if (bss->pub.free_priv)
|
|
|
|
bss->pub.free_priv(&bss->pub);
|
2009-04-16 07:00:58 -06:00
|
|
|
|
|
|
|
if (bss->ies_allocated)
|
|
|
|
kfree(bss->pub.information_elements);
|
|
|
|
|
2009-07-02 09:20:43 -06:00
|
|
|
BUG_ON(atomic_read(&bss->hold));
|
|
|
|
|
2009-02-10 13:25:55 -07:00
|
|
|
kfree(bss);
|
|
|
|
}
|
|
|
|
|
2009-02-11 15:14:43 -07:00
|
|
|
/* must hold dev->bss_lock! */
|
|
|
|
void cfg80211_bss_age(struct cfg80211_registered_device *dev,
|
|
|
|
unsigned long age_secs)
|
|
|
|
{
|
|
|
|
struct cfg80211_internal_bss *bss;
|
|
|
|
unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
|
|
|
|
|
|
|
|
list_for_each_entry(bss, &dev->bss_list, list) {
|
|
|
|
bss->ts -= age_jiffies;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-02-10 13:25:55 -07:00
|
|
|
/* must hold dev->bss_lock! */
|
|
|
|
void cfg80211_bss_expire(struct cfg80211_registered_device *dev)
|
|
|
|
{
|
|
|
|
struct cfg80211_internal_bss *bss, *tmp;
|
|
|
|
bool expired = false;
|
|
|
|
|
|
|
|
list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) {
|
2009-07-02 09:20:43 -06:00
|
|
|
if (atomic_read(&bss->hold))
|
|
|
|
continue;
|
|
|
|
if (!time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE))
|
2009-02-10 13:25:55 -07:00
|
|
|
continue;
|
|
|
|
list_del(&bss->list);
|
|
|
|
rb_erase(&bss->rbn, &dev->bss_tree);
|
|
|
|
kref_put(&bss->ref, bss_release);
|
|
|
|
expired = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (expired)
|
|
|
|
dev->bss_generation++;
|
|
|
|
}
|
|
|
|
|
2009-09-01 16:12:11 -06:00
|
|
|
static u8 *find_ie(u8 num, u8 *ies, int len)
|
2009-02-10 13:25:55 -07:00
|
|
|
{
|
|
|
|
while (len > 2 && ies[0] != num) {
|
|
|
|
len -= ies[1] + 2;
|
|
|
|
ies += ies[1] + 2;
|
|
|
|
}
|
|
|
|
if (len < 2)
|
|
|
|
return NULL;
|
|
|
|
if (len < 2 + ies[1])
|
|
|
|
return NULL;
|
|
|
|
return ies;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cmp_ies(u8 num, u8 *ies1, size_t len1, u8 *ies2, size_t len2)
|
|
|
|
{
|
|
|
|
const u8 *ie1 = find_ie(num, ies1, len1);
|
|
|
|
const u8 *ie2 = find_ie(num, ies2, len2);
|
|
|
|
int r;
|
|
|
|
|
|
|
|
if (!ie1 && !ie2)
|
|
|
|
return 0;
|
2009-07-29 14:07:44 -06:00
|
|
|
if (!ie1 || !ie2)
|
2009-02-10 13:25:55 -07:00
|
|
|
return -1;
|
|
|
|
|
|
|
|
r = memcmp(ie1 + 2, ie2 + 2, min(ie1[1], ie2[1]));
|
|
|
|
if (r == 0 && ie1[1] != ie2[1])
|
|
|
|
return ie2[1] - ie1[1];
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool is_bss(struct cfg80211_bss *a,
|
|
|
|
const u8 *bssid,
|
|
|
|
const u8 *ssid, size_t ssid_len)
|
|
|
|
{
|
|
|
|
const u8 *ssidie;
|
|
|
|
|
2009-02-10 13:25:59 -07:00
|
|
|
if (bssid && compare_ether_addr(a->bssid, bssid))
|
2009-02-10 13:25:55 -07:00
|
|
|
return false;
|
|
|
|
|
2009-02-10 13:25:59 -07:00
|
|
|
if (!ssid)
|
|
|
|
return true;
|
|
|
|
|
2009-02-10 13:25:55 -07:00
|
|
|
ssidie = find_ie(WLAN_EID_SSID,
|
|
|
|
a->information_elements,
|
|
|
|
a->len_information_elements);
|
|
|
|
if (!ssidie)
|
|
|
|
return false;
|
|
|
|
if (ssidie[1] != ssid_len)
|
|
|
|
return false;
|
|
|
|
return memcmp(ssidie + 2, ssid, ssid_len) == 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool is_mesh(struct cfg80211_bss *a,
|
|
|
|
const u8 *meshid, size_t meshidlen,
|
|
|
|
const u8 *meshcfg)
|
|
|
|
{
|
|
|
|
const u8 *ie;
|
|
|
|
|
|
|
|
if (!is_zero_ether_addr(a->bssid))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
ie = find_ie(WLAN_EID_MESH_ID,
|
|
|
|
a->information_elements,
|
|
|
|
a->len_information_elements);
|
|
|
|
if (!ie)
|
|
|
|
return false;
|
|
|
|
if (ie[1] != meshidlen)
|
|
|
|
return false;
|
|
|
|
if (memcmp(ie + 2, meshid, meshidlen))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
ie = find_ie(WLAN_EID_MESH_CONFIG,
|
|
|
|
a->information_elements,
|
|
|
|
a->len_information_elements);
|
2009-07-29 14:07:44 -06:00
|
|
|
if (!ie)
|
|
|
|
return false;
|
2009-02-10 13:25:55 -07:00
|
|
|
if (ie[1] != IEEE80211_MESH_CONFIG_LEN)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Ignore mesh capability (last two bytes of the IE) when
|
|
|
|
* comparing since that may differ between stations taking
|
|
|
|
* part in the same mesh.
|
|
|
|
*/
|
|
|
|
return memcmp(ie + 2, meshcfg, IEEE80211_MESH_CONFIG_LEN - 2) == 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cmp_bss(struct cfg80211_bss *a,
|
|
|
|
struct cfg80211_bss *b)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
if (a->channel != b->channel)
|
|
|
|
return b->channel->center_freq - a->channel->center_freq;
|
|
|
|
|
|
|
|
r = memcmp(a->bssid, b->bssid, ETH_ALEN);
|
|
|
|
if (r)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
if (is_zero_ether_addr(a->bssid)) {
|
|
|
|
r = cmp_ies(WLAN_EID_MESH_ID,
|
|
|
|
a->information_elements,
|
|
|
|
a->len_information_elements,
|
|
|
|
b->information_elements,
|
|
|
|
b->len_information_elements);
|
|
|
|
if (r)
|
|
|
|
return r;
|
|
|
|
return cmp_ies(WLAN_EID_MESH_CONFIG,
|
|
|
|
a->information_elements,
|
|
|
|
a->len_information_elements,
|
|
|
|
b->information_elements,
|
|
|
|
b->len_information_elements);
|
|
|
|
}
|
|
|
|
|
|
|
|
return cmp_ies(WLAN_EID_SSID,
|
|
|
|
a->information_elements,
|
|
|
|
a->len_information_elements,
|
|
|
|
b->information_elements,
|
|
|
|
b->len_information_elements);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
|
|
|
|
struct ieee80211_channel *channel,
|
|
|
|
const u8 *bssid,
|
2009-02-10 13:25:59 -07:00
|
|
|
const u8 *ssid, size_t ssid_len,
|
|
|
|
u16 capa_mask, u16 capa_val)
|
2009-02-10 13:25:55 -07:00
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
|
|
|
|
struct cfg80211_internal_bss *bss, *res = NULL;
|
|
|
|
|
|
|
|
spin_lock_bh(&dev->bss_lock);
|
|
|
|
|
|
|
|
list_for_each_entry(bss, &dev->bss_list, list) {
|
2009-02-10 13:25:59 -07:00
|
|
|
if ((bss->pub.capability & capa_mask) != capa_val)
|
|
|
|
continue;
|
2009-02-10 13:25:55 -07:00
|
|
|
if (channel && bss->pub.channel != channel)
|
|
|
|
continue;
|
|
|
|
if (is_bss(&bss->pub, bssid, ssid, ssid_len)) {
|
|
|
|
res = bss;
|
|
|
|
kref_get(&res->ref);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_bh(&dev->bss_lock);
|
|
|
|
if (!res)
|
|
|
|
return NULL;
|
|
|
|
return &res->pub;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(cfg80211_get_bss);
|
|
|
|
|
|
|
|
struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
|
|
|
|
struct ieee80211_channel *channel,
|
|
|
|
const u8 *meshid, size_t meshidlen,
|
|
|
|
const u8 *meshcfg)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
|
|
|
|
struct cfg80211_internal_bss *bss, *res = NULL;
|
|
|
|
|
|
|
|
spin_lock_bh(&dev->bss_lock);
|
|
|
|
|
|
|
|
list_for_each_entry(bss, &dev->bss_list, list) {
|
|
|
|
if (channel && bss->pub.channel != channel)
|
|
|
|
continue;
|
|
|
|
if (is_mesh(&bss->pub, meshid, meshidlen, meshcfg)) {
|
|
|
|
res = bss;
|
|
|
|
kref_get(&res->ref);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_bh(&dev->bss_lock);
|
|
|
|
if (!res)
|
|
|
|
return NULL;
|
|
|
|
return &res->pub;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(cfg80211_get_mesh);
|
|
|
|
|
|
|
|
|
|
|
|
static void rb_insert_bss(struct cfg80211_registered_device *dev,
|
|
|
|
struct cfg80211_internal_bss *bss)
|
|
|
|
{
|
|
|
|
struct rb_node **p = &dev->bss_tree.rb_node;
|
|
|
|
struct rb_node *parent = NULL;
|
|
|
|
struct cfg80211_internal_bss *tbss;
|
|
|
|
int cmp;
|
|
|
|
|
|
|
|
while (*p) {
|
|
|
|
parent = *p;
|
|
|
|
tbss = rb_entry(parent, struct cfg80211_internal_bss, rbn);
|
|
|
|
|
|
|
|
cmp = cmp_bss(&bss->pub, &tbss->pub);
|
|
|
|
|
|
|
|
if (WARN_ON(!cmp)) {
|
|
|
|
/* will sort of leak this BSS */
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cmp < 0)
|
|
|
|
p = &(*p)->rb_left;
|
|
|
|
else
|
|
|
|
p = &(*p)->rb_right;
|
|
|
|
}
|
|
|
|
|
|
|
|
rb_link_node(&bss->rbn, parent, p);
|
|
|
|
rb_insert_color(&bss->rbn, &dev->bss_tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct cfg80211_internal_bss *
|
|
|
|
rb_find_bss(struct cfg80211_registered_device *dev,
|
|
|
|
struct cfg80211_internal_bss *res)
|
|
|
|
{
|
|
|
|
struct rb_node *n = dev->bss_tree.rb_node;
|
|
|
|
struct cfg80211_internal_bss *bss;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
while (n) {
|
|
|
|
bss = rb_entry(n, struct cfg80211_internal_bss, rbn);
|
|
|
|
r = cmp_bss(&res->pub, &bss->pub);
|
|
|
|
|
|
|
|
if (r == 0)
|
|
|
|
return bss;
|
|
|
|
else if (r < 0)
|
|
|
|
n = n->rb_left;
|
|
|
|
else
|
|
|
|
n = n->rb_right;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct cfg80211_internal_bss *
|
|
|
|
cfg80211_bss_update(struct cfg80211_registered_device *dev,
|
|
|
|
struct cfg80211_internal_bss *res,
|
|
|
|
bool overwrite)
|
|
|
|
{
|
|
|
|
struct cfg80211_internal_bss *found = NULL;
|
|
|
|
const u8 *meshid, *meshcfg;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The reference to "res" is donated to this function.
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (WARN_ON(!res->pub.channel)) {
|
|
|
|
kref_put(&res->ref, bss_release);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
res->ts = jiffies;
|
|
|
|
|
|
|
|
if (is_zero_ether_addr(res->pub.bssid)) {
|
|
|
|
/* must be mesh, verify */
|
|
|
|
meshid = find_ie(WLAN_EID_MESH_ID, res->pub.information_elements,
|
|
|
|
res->pub.len_information_elements);
|
|
|
|
meshcfg = find_ie(WLAN_EID_MESH_CONFIG,
|
|
|
|
res->pub.information_elements,
|
|
|
|
res->pub.len_information_elements);
|
|
|
|
if (!meshid || !meshcfg ||
|
|
|
|
meshcfg[1] != IEEE80211_MESH_CONFIG_LEN) {
|
|
|
|
/* bogus mesh */
|
|
|
|
kref_put(&res->ref, bss_release);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_bh(&dev->bss_lock);
|
|
|
|
|
|
|
|
found = rb_find_bss(dev, res);
|
|
|
|
|
2009-04-16 07:00:58 -06:00
|
|
|
if (found) {
|
2009-02-10 13:25:55 -07:00
|
|
|
found->pub.beacon_interval = res->pub.beacon_interval;
|
|
|
|
found->pub.tsf = res->pub.tsf;
|
|
|
|
found->pub.signal = res->pub.signal;
|
|
|
|
found->pub.capability = res->pub.capability;
|
|
|
|
found->ts = res->ts;
|
2009-04-16 07:00:58 -06:00
|
|
|
|
|
|
|
/* overwrite IEs */
|
|
|
|
if (overwrite) {
|
|
|
|
size_t used = dev->wiphy.bss_priv_size + sizeof(*res);
|
|
|
|
size_t ielen = res->pub.len_information_elements;
|
|
|
|
|
2009-04-26 03:27:33 -06:00
|
|
|
if (!found->ies_allocated && ksize(found) >= used + ielen) {
|
2009-04-16 07:00:58 -06:00
|
|
|
memcpy(found->pub.information_elements,
|
|
|
|
res->pub.information_elements, ielen);
|
|
|
|
found->pub.len_information_elements = ielen;
|
|
|
|
} else {
|
|
|
|
u8 *ies = found->pub.information_elements;
|
|
|
|
|
2009-04-25 14:28:55 -06:00
|
|
|
if (found->ies_allocated)
|
|
|
|
ies = krealloc(ies, ielen, GFP_ATOMIC);
|
|
|
|
else
|
2009-04-16 07:00:58 -06:00
|
|
|
ies = kmalloc(ielen, GFP_ATOMIC);
|
|
|
|
|
|
|
|
if (ies) {
|
|
|
|
memcpy(ies, res->pub.information_elements, ielen);
|
|
|
|
found->ies_allocated = true;
|
|
|
|
found->pub.information_elements = ies;
|
2009-04-30 12:09:56 -06:00
|
|
|
found->pub.len_information_elements = ielen;
|
2009-04-16 07:00:58 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-02-10 13:25:55 -07:00
|
|
|
kref_put(&res->ref, bss_release);
|
|
|
|
} else {
|
|
|
|
/* this "consumes" the reference */
|
|
|
|
list_add_tail(&res->list, &dev->bss_list);
|
|
|
|
rb_insert_bss(dev, res);
|
|
|
|
found = res;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev->bss_generation++;
|
|
|
|
spin_unlock_bh(&dev->bss_lock);
|
|
|
|
|
|
|
|
kref_get(&found->ref);
|
|
|
|
return found;
|
|
|
|
}
|
|
|
|
|
2009-03-26 15:40:09 -06:00
|
|
|
struct cfg80211_bss*
|
|
|
|
cfg80211_inform_bss(struct wiphy *wiphy,
|
|
|
|
struct ieee80211_channel *channel,
|
|
|
|
const u8 *bssid,
|
|
|
|
u64 timestamp, u16 capability, u16 beacon_interval,
|
|
|
|
const u8 *ie, size_t ielen,
|
|
|
|
s32 signal, gfp_t gfp)
|
|
|
|
{
|
|
|
|
struct cfg80211_internal_bss *res;
|
|
|
|
size_t privsz;
|
|
|
|
|
|
|
|
if (WARN_ON(!wiphy))
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
privsz = wiphy->bss_priv_size;
|
|
|
|
|
|
|
|
if (WARN_ON(wiphy->signal_type == NL80211_BSS_SIGNAL_UNSPEC &&
|
|
|
|
(signal < 0 || signal > 100)))
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
res = kzalloc(sizeof(*res) + privsz + ielen, gfp);
|
|
|
|
if (!res)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
memcpy(res->pub.bssid, bssid, ETH_ALEN);
|
|
|
|
res->pub.channel = channel;
|
|
|
|
res->pub.signal = signal;
|
|
|
|
res->pub.tsf = timestamp;
|
|
|
|
res->pub.beacon_interval = beacon_interval;
|
|
|
|
res->pub.capability = capability;
|
|
|
|
/* point to after the private area */
|
|
|
|
res->pub.information_elements = (u8 *)res + sizeof(*res) + privsz;
|
|
|
|
memcpy(res->pub.information_elements, ie, ielen);
|
|
|
|
res->pub.len_information_elements = ielen;
|
|
|
|
|
|
|
|
kref_init(&res->ref);
|
|
|
|
|
|
|
|
res = cfg80211_bss_update(wiphy_to_dev(wiphy), res, 0);
|
|
|
|
if (!res)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if (res->pub.capability & WLAN_CAPABILITY_ESS)
|
|
|
|
regulatory_hint_found_beacon(wiphy, channel, gfp);
|
|
|
|
|
|
|
|
/* cfg80211_bss_update gives us a referenced result */
|
|
|
|
return &res->pub;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(cfg80211_inform_bss);
|
|
|
|
|
2009-02-10 13:25:55 -07:00
|
|
|
struct cfg80211_bss *
|
|
|
|
cfg80211_inform_bss_frame(struct wiphy *wiphy,
|
|
|
|
struct ieee80211_channel *channel,
|
|
|
|
struct ieee80211_mgmt *mgmt, size_t len,
|
2009-02-18 10:45:06 -07:00
|
|
|
s32 signal, gfp_t gfp)
|
2009-02-10 13:25:55 -07:00
|
|
|
{
|
|
|
|
struct cfg80211_internal_bss *res;
|
|
|
|
size_t ielen = len - offsetof(struct ieee80211_mgmt,
|
|
|
|
u.probe_resp.variable);
|
|
|
|
bool overwrite;
|
|
|
|
size_t privsz = wiphy->bss_priv_size;
|
|
|
|
|
2009-02-18 10:45:06 -07:00
|
|
|
if (WARN_ON(wiphy->signal_type == NL80211_BSS_SIGNAL_UNSPEC &&
|
2009-02-10 13:25:55 -07:00
|
|
|
(signal < 0 || signal > 100)))
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if (WARN_ON(!mgmt || !wiphy ||
|
|
|
|
len < offsetof(struct ieee80211_mgmt, u.probe_resp.variable)))
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
res = kzalloc(sizeof(*res) + privsz + ielen, gfp);
|
|
|
|
if (!res)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
memcpy(res->pub.bssid, mgmt->bssid, ETH_ALEN);
|
|
|
|
res->pub.channel = channel;
|
|
|
|
res->pub.signal = signal;
|
|
|
|
res->pub.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp);
|
|
|
|
res->pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
|
|
|
|
res->pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
|
|
|
|
/* point to after the private area */
|
|
|
|
res->pub.information_elements = (u8 *)res + sizeof(*res) + privsz;
|
|
|
|
memcpy(res->pub.information_elements, mgmt->u.probe_resp.variable, ielen);
|
|
|
|
res->pub.len_information_elements = ielen;
|
|
|
|
|
|
|
|
kref_init(&res->ref);
|
|
|
|
|
|
|
|
overwrite = ieee80211_is_probe_resp(mgmt->frame_control);
|
|
|
|
|
|
|
|
res = cfg80211_bss_update(wiphy_to_dev(wiphy), res, overwrite);
|
|
|
|
if (!res)
|
|
|
|
return NULL;
|
|
|
|
|
2009-02-20 22:20:39 -07:00
|
|
|
if (res->pub.capability & WLAN_CAPABILITY_ESS)
|
|
|
|
regulatory_hint_found_beacon(wiphy, channel, gfp);
|
|
|
|
|
2009-02-10 13:25:55 -07:00
|
|
|
/* cfg80211_bss_update gives us a referenced result */
|
|
|
|
return &res->pub;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(cfg80211_inform_bss_frame);
|
|
|
|
|
|
|
|
void cfg80211_put_bss(struct cfg80211_bss *pub)
|
|
|
|
{
|
|
|
|
struct cfg80211_internal_bss *bss;
|
|
|
|
|
|
|
|
if (!pub)
|
|
|
|
return;
|
|
|
|
|
|
|
|
bss = container_of(pub, struct cfg80211_internal_bss, pub);
|
|
|
|
kref_put(&bss->ref, bss_release);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(cfg80211_put_bss);
|
|
|
|
|
2009-02-10 13:25:58 -07:00
|
|
|
void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
|
|
|
|
struct cfg80211_internal_bss *bss;
|
|
|
|
|
|
|
|
if (WARN_ON(!pub))
|
|
|
|
return;
|
|
|
|
|
|
|
|
bss = container_of(pub, struct cfg80211_internal_bss, pub);
|
|
|
|
|
|
|
|
spin_lock_bh(&dev->bss_lock);
|
|
|
|
|
|
|
|
list_del(&bss->list);
|
2009-08-07 08:17:38 -06:00
|
|
|
dev->bss_generation++;
|
2009-02-10 13:25:58 -07:00
|
|
|
rb_erase(&bss->rbn, &dev->bss_tree);
|
|
|
|
|
|
|
|
spin_unlock_bh(&dev->bss_lock);
|
|
|
|
|
|
|
|
kref_put(&bss->ref, bss_release);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(cfg80211_unlink_bss);
|
|
|
|
|
2009-02-10 13:25:55 -07:00
|
|
|
#ifdef CONFIG_WIRELESS_EXT
|
|
|
|
int cfg80211_wext_siwscan(struct net_device *dev,
|
|
|
|
struct iw_request_info *info,
|
|
|
|
union iwreq_data *wrqu, char *extra)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
struct wiphy *wiphy;
|
|
|
|
struct iw_scan_req *wreq = NULL;
|
|
|
|
struct cfg80211_scan_request *creq;
|
|
|
|
int i, err, n_channels = 0;
|
|
|
|
enum ieee80211_band band;
|
|
|
|
|
|
|
|
if (!netif_running(dev))
|
|
|
|
return -ENETDOWN;
|
|
|
|
|
2009-07-13 16:33:35 -06:00
|
|
|
rdev = cfg80211_get_dev_from_ifindex(dev_net(dev), dev->ifindex);
|
2009-02-10 13:25:55 -07:00
|
|
|
|
|
|
|
if (IS_ERR(rdev))
|
|
|
|
return PTR_ERR(rdev);
|
|
|
|
|
|
|
|
if (rdev->scan_req) {
|
|
|
|
err = -EBUSY;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
wiphy = &rdev->wiphy;
|
|
|
|
|
|
|
|
for (band = 0; band < IEEE80211_NUM_BANDS; band++)
|
|
|
|
if (wiphy->bands[band])
|
|
|
|
n_channels += wiphy->bands[band]->n_channels;
|
|
|
|
|
|
|
|
creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
|
|
|
|
n_channels * sizeof(void *),
|
|
|
|
GFP_ATOMIC);
|
|
|
|
if (!creq) {
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
creq->wiphy = wiphy;
|
2009-07-13 16:33:35 -06:00
|
|
|
creq->dev = dev;
|
2009-08-07 09:54:07 -06:00
|
|
|
/* SSIDs come after channels */
|
|
|
|
creq->ssids = (void *)&creq->channels[n_channels];
|
2009-02-10 13:25:55 -07:00
|
|
|
creq->n_channels = n_channels;
|
|
|
|
creq->n_ssids = 1;
|
|
|
|
|
|
|
|
/* all channels */
|
|
|
|
i = 0;
|
|
|
|
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
|
|
|
|
int j;
|
|
|
|
if (!wiphy->bands[band])
|
|
|
|
continue;
|
|
|
|
for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
|
|
|
|
creq->channels[i] = &wiphy->bands[band]->channels[j];
|
|
|
|
i++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* translate scan request */
|
|
|
|
if (wrqu->data.length == sizeof(struct iw_scan_req)) {
|
|
|
|
wreq = (struct iw_scan_req *)extra;
|
|
|
|
|
|
|
|
if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
|
|
|
|
if (wreq->essid_len > IEEE80211_MAX_SSID_LEN)
|
|
|
|
return -EINVAL;
|
|
|
|
memcpy(creq->ssids[0].ssid, wreq->essid, wreq->essid_len);
|
|
|
|
creq->ssids[0].ssid_len = wreq->essid_len;
|
|
|
|
}
|
|
|
|
if (wreq->scan_type == IW_SCAN_TYPE_PASSIVE)
|
|
|
|
creq->n_ssids = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
rdev->scan_req = creq;
|
|
|
|
err = rdev->ops->scan(wiphy, dev, creq);
|
|
|
|
if (err) {
|
|
|
|
rdev->scan_req = NULL;
|
|
|
|
kfree(creq);
|
2009-07-13 16:33:35 -06:00
|
|
|
} else {
|
2009-06-16 11:56:42 -06:00
|
|
|
nl80211_send_scan_start(rdev, dev);
|
2009-07-13 16:33:35 -06:00
|
|
|
dev_hold(dev);
|
|
|
|
}
|
2009-02-10 13:25:55 -07:00
|
|
|
out:
|
2009-07-06 19:56:09 -06:00
|
|
|
cfg80211_unlock_rdev(rdev);
|
2009-02-10 13:25:55 -07:00
|
|
|
return err;
|
|
|
|
}
|
2009-04-20 10:49:39 -06:00
|
|
|
EXPORT_SYMBOL_GPL(cfg80211_wext_siwscan);
|
2009-02-10 13:25:55 -07:00
|
|
|
|
|
|
|
static void ieee80211_scan_add_ies(struct iw_request_info *info,
|
|
|
|
struct cfg80211_bss *bss,
|
|
|
|
char **current_ev, char *end_buf)
|
|
|
|
{
|
|
|
|
u8 *pos, *end, *next;
|
|
|
|
struct iw_event iwe;
|
|
|
|
|
|
|
|
if (!bss->information_elements ||
|
|
|
|
!bss->len_information_elements)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If needed, fragment the IEs buffer (at IE boundaries) into short
|
|
|
|
* enough fragments to fit into IW_GENERIC_IE_MAX octet messages.
|
|
|
|
*/
|
|
|
|
pos = bss->information_elements;
|
|
|
|
end = pos + bss->len_information_elements;
|
|
|
|
|
|
|
|
while (end - pos > IW_GENERIC_IE_MAX) {
|
|
|
|
next = pos + 2 + pos[1];
|
|
|
|
while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX)
|
|
|
|
next = next + 2 + next[1];
|
|
|
|
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = IWEVGENIE;
|
|
|
|
iwe.u.data.length = next - pos;
|
|
|
|
*current_ev = iwe_stream_add_point(info, *current_ev,
|
|
|
|
end_buf, &iwe, pos);
|
|
|
|
|
|
|
|
pos = next;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (end > pos) {
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = IWEVGENIE;
|
|
|
|
iwe.u.data.length = end - pos;
|
|
|
|
*current_ev = iwe_stream_add_point(info, *current_ev,
|
|
|
|
end_buf, &iwe, pos);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-02-11 15:14:43 -07:00
|
|
|
static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
|
|
|
|
{
|
|
|
|
unsigned long end = jiffies;
|
|
|
|
|
|
|
|
if (end >= start)
|
|
|
|
return jiffies_to_msecs(end - start);
|
|
|
|
|
|
|
|
return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
|
|
|
|
}
|
2009-02-10 13:25:55 -07:00
|
|
|
|
|
|
|
static char *
|
2009-02-18 10:45:06 -07:00
|
|
|
ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info,
|
|
|
|
struct cfg80211_internal_bss *bss, char *current_ev,
|
|
|
|
char *end_buf)
|
2009-02-10 13:25:55 -07:00
|
|
|
{
|
|
|
|
struct iw_event iwe;
|
|
|
|
u8 *buf, *cfg, *p;
|
|
|
|
u8 *ie = bss->pub.information_elements;
|
2009-02-18 10:27:22 -07:00
|
|
|
int rem = bss->pub.len_information_elements, i, sig;
|
2009-02-10 13:25:55 -07:00
|
|
|
bool ismesh = false;
|
|
|
|
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = SIOCGIWAP;
|
|
|
|
iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
|
|
|
|
memcpy(iwe.u.ap_addr.sa_data, bss->pub.bssid, ETH_ALEN);
|
|
|
|
current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
|
|
|
|
IW_EV_ADDR_LEN);
|
|
|
|
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = SIOCGIWFREQ;
|
|
|
|
iwe.u.freq.m = ieee80211_frequency_to_channel(bss->pub.channel->center_freq);
|
|
|
|
iwe.u.freq.e = 0;
|
|
|
|
current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
|
|
|
|
IW_EV_FREQ_LEN);
|
|
|
|
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = SIOCGIWFREQ;
|
|
|
|
iwe.u.freq.m = bss->pub.channel->center_freq;
|
|
|
|
iwe.u.freq.e = 6;
|
|
|
|
current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
|
|
|
|
IW_EV_FREQ_LEN);
|
|
|
|
|
2009-02-18 10:45:06 -07:00
|
|
|
if (wiphy->signal_type != CFG80211_SIGNAL_TYPE_NONE) {
|
2009-02-10 13:25:55 -07:00
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = IWEVQUAL;
|
|
|
|
iwe.u.qual.updated = IW_QUAL_LEVEL_UPDATED |
|
|
|
|
IW_QUAL_NOISE_INVALID |
|
2009-02-18 10:27:22 -07:00
|
|
|
IW_QUAL_QUAL_UPDATED;
|
2009-02-18 10:45:06 -07:00
|
|
|
switch (wiphy->signal_type) {
|
2009-02-10 13:25:55 -07:00
|
|
|
case CFG80211_SIGNAL_TYPE_MBM:
|
2009-02-18 10:27:22 -07:00
|
|
|
sig = bss->pub.signal / 100;
|
|
|
|
iwe.u.qual.level = sig;
|
2009-02-10 13:25:55 -07:00
|
|
|
iwe.u.qual.updated |= IW_QUAL_DBM;
|
2009-02-18 10:27:22 -07:00
|
|
|
if (sig < -110) /* rather bad */
|
|
|
|
sig = -110;
|
|
|
|
else if (sig > -40) /* perfect */
|
|
|
|
sig = -40;
|
|
|
|
/* will give a range of 0 .. 70 */
|
|
|
|
iwe.u.qual.qual = sig + 110;
|
2009-02-10 13:25:55 -07:00
|
|
|
break;
|
|
|
|
case CFG80211_SIGNAL_TYPE_UNSPEC:
|
|
|
|
iwe.u.qual.level = bss->pub.signal;
|
2009-02-18 10:27:22 -07:00
|
|
|
/* will give range 0 .. 100 */
|
|
|
|
iwe.u.qual.qual = bss->pub.signal;
|
2009-02-10 13:25:55 -07:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* not reached */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
|
|
|
|
&iwe, IW_EV_QUAL_LEN);
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = SIOCGIWENCODE;
|
|
|
|
if (bss->pub.capability & WLAN_CAPABILITY_PRIVACY)
|
|
|
|
iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
|
|
|
|
else
|
|
|
|
iwe.u.data.flags = IW_ENCODE_DISABLED;
|
|
|
|
iwe.u.data.length = 0;
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev, end_buf,
|
|
|
|
&iwe, "");
|
|
|
|
|
|
|
|
while (rem >= 2) {
|
|
|
|
/* invalid data */
|
|
|
|
if (ie[1] > rem - 2)
|
|
|
|
break;
|
|
|
|
|
|
|
|
switch (ie[0]) {
|
|
|
|
case WLAN_EID_SSID:
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = SIOCGIWESSID;
|
|
|
|
iwe.u.data.length = ie[1];
|
|
|
|
iwe.u.data.flags = 1;
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev, end_buf,
|
|
|
|
&iwe, ie + 2);
|
|
|
|
break;
|
|
|
|
case WLAN_EID_MESH_ID:
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = SIOCGIWESSID;
|
|
|
|
iwe.u.data.length = ie[1];
|
|
|
|
iwe.u.data.flags = 1;
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev, end_buf,
|
|
|
|
&iwe, ie + 2);
|
|
|
|
break;
|
|
|
|
case WLAN_EID_MESH_CONFIG:
|
|
|
|
ismesh = true;
|
|
|
|
if (ie[1] != IEEE80211_MESH_CONFIG_LEN)
|
|
|
|
break;
|
|
|
|
buf = kmalloc(50, GFP_ATOMIC);
|
|
|
|
if (!buf)
|
|
|
|
break;
|
|
|
|
cfg = ie + 2;
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = IWEVCUSTOM;
|
|
|
|
sprintf(buf, "Mesh network (version %d)", cfg[0]);
|
|
|
|
iwe.u.data.length = strlen(buf);
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev,
|
|
|
|
end_buf,
|
|
|
|
&iwe, buf);
|
|
|
|
sprintf(buf, "Path Selection Protocol ID: "
|
|
|
|
"0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
|
|
|
|
cfg[4]);
|
|
|
|
iwe.u.data.length = strlen(buf);
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev,
|
|
|
|
end_buf,
|
|
|
|
&iwe, buf);
|
|
|
|
sprintf(buf, "Path Selection Metric ID: "
|
|
|
|
"0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
|
|
|
|
cfg[8]);
|
|
|
|
iwe.u.data.length = strlen(buf);
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev,
|
|
|
|
end_buf,
|
|
|
|
&iwe, buf);
|
|
|
|
sprintf(buf, "Congestion Control Mode ID: "
|
|
|
|
"0x%02X%02X%02X%02X", cfg[9], cfg[10],
|
|
|
|
cfg[11], cfg[12]);
|
|
|
|
iwe.u.data.length = strlen(buf);
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev,
|
|
|
|
end_buf,
|
|
|
|
&iwe, buf);
|
|
|
|
sprintf(buf, "Channel Precedence: "
|
|
|
|
"0x%02X%02X%02X%02X", cfg[13], cfg[14],
|
|
|
|
cfg[15], cfg[16]);
|
|
|
|
iwe.u.data.length = strlen(buf);
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev,
|
|
|
|
end_buf,
|
|
|
|
&iwe, buf);
|
|
|
|
kfree(buf);
|
|
|
|
break;
|
|
|
|
case WLAN_EID_SUPP_RATES:
|
|
|
|
case WLAN_EID_EXT_SUPP_RATES:
|
|
|
|
/* display all supported rates in readable format */
|
|
|
|
p = current_ev + iwe_stream_lcp_len(info);
|
|
|
|
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = SIOCGIWRATE;
|
|
|
|
/* Those two flags are ignored... */
|
|
|
|
iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < ie[1]; i++) {
|
|
|
|
iwe.u.bitrate.value =
|
|
|
|
((ie[i + 2] & 0x7f) * 500000);
|
|
|
|
p = iwe_stream_add_value(info, current_ev, p,
|
|
|
|
end_buf, &iwe, IW_EV_PARAM_LEN);
|
|
|
|
}
|
|
|
|
current_ev = p;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
rem -= ie[1] + 2;
|
|
|
|
ie += ie[1] + 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bss->pub.capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
|
|
|
|
|| ismesh) {
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = SIOCGIWMODE;
|
|
|
|
if (ismesh)
|
|
|
|
iwe.u.mode = IW_MODE_MESH;
|
|
|
|
else if (bss->pub.capability & WLAN_CAPABILITY_ESS)
|
|
|
|
iwe.u.mode = IW_MODE_MASTER;
|
|
|
|
else
|
|
|
|
iwe.u.mode = IW_MODE_ADHOC;
|
|
|
|
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
|
|
|
|
&iwe, IW_EV_UINT_LEN);
|
|
|
|
}
|
|
|
|
|
|
|
|
buf = kmalloc(30, GFP_ATOMIC);
|
|
|
|
if (buf) {
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = IWEVCUSTOM;
|
|
|
|
sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->pub.tsf));
|
|
|
|
iwe.u.data.length = strlen(buf);
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev, end_buf,
|
|
|
|
&iwe, buf);
|
|
|
|
memset(&iwe, 0, sizeof(iwe));
|
|
|
|
iwe.cmd = IWEVCUSTOM;
|
2009-02-11 15:14:43 -07:00
|
|
|
sprintf(buf, " Last beacon: %ums ago",
|
|
|
|
elapsed_jiffies_msecs(bss->ts));
|
2009-02-10 13:25:55 -07:00
|
|
|
iwe.u.data.length = strlen(buf);
|
|
|
|
current_ev = iwe_stream_add_point(info, current_ev,
|
|
|
|
end_buf, &iwe, buf);
|
|
|
|
kfree(buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
ieee80211_scan_add_ies(info, &bss->pub, ¤t_ev, end_buf);
|
|
|
|
|
|
|
|
return current_ev;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int ieee80211_scan_results(struct cfg80211_registered_device *dev,
|
|
|
|
struct iw_request_info *info,
|
|
|
|
char *buf, size_t len)
|
|
|
|
{
|
|
|
|
char *current_ev = buf;
|
|
|
|
char *end_buf = buf + len;
|
|
|
|
struct cfg80211_internal_bss *bss;
|
|
|
|
|
|
|
|
spin_lock_bh(&dev->bss_lock);
|
|
|
|
cfg80211_bss_expire(dev);
|
|
|
|
|
|
|
|
list_for_each_entry(bss, &dev->bss_list, list) {
|
|
|
|
if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
|
|
|
|
spin_unlock_bh(&dev->bss_lock);
|
|
|
|
return -E2BIG;
|
|
|
|
}
|
2009-02-18 10:45:06 -07:00
|
|
|
current_ev = ieee80211_bss(&dev->wiphy, info, bss,
|
|
|
|
current_ev, end_buf);
|
2009-02-10 13:25:55 -07:00
|
|
|
}
|
|
|
|
spin_unlock_bh(&dev->bss_lock);
|
|
|
|
return current_ev - buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int cfg80211_wext_giwscan(struct net_device *dev,
|
|
|
|
struct iw_request_info *info,
|
|
|
|
struct iw_point *data, char *extra)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
int res;
|
|
|
|
|
|
|
|
if (!netif_running(dev))
|
|
|
|
return -ENETDOWN;
|
|
|
|
|
2009-07-13 16:33:35 -06:00
|
|
|
rdev = cfg80211_get_dev_from_ifindex(dev_net(dev), dev->ifindex);
|
2009-02-10 13:25:55 -07:00
|
|
|
|
|
|
|
if (IS_ERR(rdev))
|
|
|
|
return PTR_ERR(rdev);
|
|
|
|
|
|
|
|
if (rdev->scan_req) {
|
|
|
|
res = -EAGAIN;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
res = ieee80211_scan_results(rdev, info, extra, data->length);
|
|
|
|
data->length = 0;
|
|
|
|
if (res >= 0) {
|
|
|
|
data->length = res;
|
|
|
|
res = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
2009-07-06 19:56:09 -06:00
|
|
|
cfg80211_unlock_rdev(rdev);
|
2009-02-10 13:25:55 -07:00
|
|
|
return res;
|
|
|
|
}
|
2009-04-20 10:49:39 -06:00
|
|
|
EXPORT_SYMBOL_GPL(cfg80211_wext_giwscan);
|
2009-02-10 13:25:55 -07:00
|
|
|
#endif
|