forked from Minki/linux
ee2aca343c
For testing it's sometimes useful to be able to override certain VHT capability advertisement, add the ability to do that in cfg80211. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
980 lines
25 KiB
C
980 lines
25 KiB
C
/*
|
|
* cfg80211 MLME SAP interface
|
|
*
|
|
* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/nl80211.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/wireless.h>
|
|
#include <net/cfg80211.h>
|
|
#include <net/iw_handler.h>
|
|
#include "core.h"
|
|
#include "nl80211.h"
|
|
#include "rdev-ops.h"
|
|
|
|
|
|
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
trace_cfg80211_send_rx_auth(dev);
|
|
wdev_lock(wdev);
|
|
|
|
nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
|
|
cfg80211_sme_rx_auth(dev, buf, len);
|
|
|
|
wdev_unlock(wdev);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_send_rx_auth);
|
|
|
|
void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
|
|
const u8 *buf, size_t len)
|
|
{
|
|
u16 status_code;
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
|
|
u8 *ie = mgmt->u.assoc_resp.variable;
|
|
int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
|
|
|
|
trace_cfg80211_send_rx_assoc(dev, bss);
|
|
wdev_lock(wdev);
|
|
|
|
status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
|
|
|
|
/*
|
|
* This is a bit of a hack, we don't notify userspace of
|
|
* a (re-)association reply if we tried to send a reassoc
|
|
* and got a reject -- we only try again with an assoc
|
|
* frame instead of reassoc.
|
|
*/
|
|
if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
|
|
cfg80211_sme_failed_reassoc(wdev)) {
|
|
cfg80211_put_bss(wiphy, bss);
|
|
goto out;
|
|
}
|
|
|
|
nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
|
|
|
|
if (status_code != WLAN_STATUS_SUCCESS && wdev->conn) {
|
|
cfg80211_sme_failed_assoc(wdev);
|
|
/*
|
|
* do not call connect_result() now because the
|
|
* sme will schedule work that does it later.
|
|
*/
|
|
cfg80211_put_bss(wiphy, bss);
|
|
goto out;
|
|
}
|
|
|
|
if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
|
|
/*
|
|
* This is for the userspace SME, the CONNECTING
|
|
* state will be changed to CONNECTED by
|
|
* __cfg80211_connect_result() below.
|
|
*/
|
|
wdev->sme_state = CFG80211_SME_CONNECTING;
|
|
}
|
|
|
|
/* this consumes the bss reference */
|
|
__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
|
|
status_code,
|
|
status_code == WLAN_STATUS_SUCCESS, bss);
|
|
out:
|
|
wdev_unlock(wdev);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_send_rx_assoc);
|
|
|
|
void __cfg80211_send_deauth(struct net_device *dev,
|
|
const u8 *buf, size_t len)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
|
|
const u8 *bssid = mgmt->bssid;
|
|
bool was_current = false;
|
|
|
|
trace___cfg80211_send_deauth(dev);
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (wdev->current_bss &&
|
|
ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(wiphy, &wdev->current_bss->pub);
|
|
wdev->current_bss = NULL;
|
|
was_current = true;
|
|
}
|
|
|
|
nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
|
|
|
|
if (wdev->sme_state == CFG80211_SME_CONNECTED && was_current) {
|
|
u16 reason_code;
|
|
bool from_ap;
|
|
|
|
reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
|
|
|
|
from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr);
|
|
__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
|
|
} else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
|
|
__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
|
|
WLAN_STATUS_UNSPECIFIED_FAILURE,
|
|
false, NULL);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(__cfg80211_send_deauth);
|
|
|
|
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
|
|
wdev_lock(wdev);
|
|
__cfg80211_send_deauth(dev, buf, len);
|
|
wdev_unlock(wdev);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_send_deauth);
|
|
|
|
void __cfg80211_send_disassoc(struct net_device *dev,
|
|
const u8 *buf, size_t len)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
|
|
const u8 *bssid = mgmt->bssid;
|
|
u16 reason_code;
|
|
bool from_ap;
|
|
|
|
trace___cfg80211_send_disassoc(dev);
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
|
|
|
|
if (wdev->sme_state != CFG80211_SME_CONNECTED)
|
|
return;
|
|
|
|
if (wdev->current_bss &&
|
|
ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
|
|
cfg80211_sme_disassoc(dev, wdev->current_bss);
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(wiphy, &wdev->current_bss->pub);
|
|
wdev->current_bss = NULL;
|
|
} else
|
|
WARN_ON(1);
|
|
|
|
|
|
reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
|
|
|
|
from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr);
|
|
__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
|
|
}
|
|
EXPORT_SYMBOL(__cfg80211_send_disassoc);
|
|
|
|
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
|
|
wdev_lock(wdev);
|
|
__cfg80211_send_disassoc(dev, buf, len);
|
|
wdev_unlock(wdev);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_send_disassoc);
|
|
|
|
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
trace_cfg80211_send_auth_timeout(dev, addr);
|
|
wdev_lock(wdev);
|
|
|
|
nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
|
|
if (wdev->sme_state == CFG80211_SME_CONNECTING)
|
|
__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
|
|
WLAN_STATUS_UNSPECIFIED_FAILURE,
|
|
false, NULL);
|
|
|
|
wdev_unlock(wdev);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_send_auth_timeout);
|
|
|
|
void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
trace_cfg80211_send_assoc_timeout(dev, addr);
|
|
wdev_lock(wdev);
|
|
|
|
nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
|
|
if (wdev->sme_state == CFG80211_SME_CONNECTING)
|
|
__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
|
|
WLAN_STATUS_UNSPECIFIED_FAILURE,
|
|
false, NULL);
|
|
|
|
wdev_unlock(wdev);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
|
|
|
|
void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
|
|
enum nl80211_key_type key_type, int key_id,
|
|
const u8 *tsc, gfp_t gfp)
|
|
{
|
|
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
union iwreq_data wrqu;
|
|
char *buf = kmalloc(128, gfp);
|
|
|
|
if (buf) {
|
|
sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
|
|
"keyid=%d %scast addr=%pM)", key_id,
|
|
key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
|
|
addr);
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.data.length = strlen(buf);
|
|
wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
|
|
kfree(buf);
|
|
}
|
|
#endif
|
|
|
|
trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc);
|
|
nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_michael_mic_failure);
|
|
|
|
/* some MLME handling for userspace SME */
|
|
int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct ieee80211_channel *chan,
|
|
enum nl80211_auth_type auth_type,
|
|
const u8 *bssid,
|
|
const u8 *ssid, int ssid_len,
|
|
const u8 *ie, int ie_len,
|
|
const u8 *key, int key_len, int key_idx,
|
|
const u8 *sae_data, int sae_data_len)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_auth_request req;
|
|
int err;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
|
|
if (!key || !key_len || key_idx < 0 || key_idx > 4)
|
|
return -EINVAL;
|
|
|
|
if (wdev->current_bss &&
|
|
ether_addr_equal(bssid, wdev->current_bss->pub.bssid))
|
|
return -EALREADY;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
req.ie = ie;
|
|
req.ie_len = ie_len;
|
|
req.sae_data = sae_data;
|
|
req.sae_data_len = sae_data_len;
|
|
req.auth_type = auth_type;
|
|
req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
|
|
WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
|
|
req.key = key;
|
|
req.key_len = key_len;
|
|
req.key_idx = key_idx;
|
|
if (!req.bss)
|
|
return -ENOENT;
|
|
|
|
err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel,
|
|
CHAN_MODE_SHARED);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = rdev_auth(rdev, dev, &req);
|
|
|
|
out:
|
|
cfg80211_put_bss(&rdev->wiphy, req.bss);
|
|
return err;
|
|
}
|
|
|
|
int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, struct ieee80211_channel *chan,
|
|
enum nl80211_auth_type auth_type, const u8 *bssid,
|
|
const u8 *ssid, int ssid_len,
|
|
const u8 *ie, int ie_len,
|
|
const u8 *key, int key_len, int key_idx,
|
|
const u8 *sae_data, int sae_data_len)
|
|
{
|
|
int err;
|
|
|
|
mutex_lock(&rdev->devlist_mtx);
|
|
wdev_lock(dev->ieee80211_ptr);
|
|
err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
|
|
ssid, ssid_len, ie, ie_len,
|
|
key, key_len, key_idx,
|
|
sae_data, sae_data_len);
|
|
wdev_unlock(dev->ieee80211_ptr);
|
|
mutex_unlock(&rdev->devlist_mtx);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* Do a logical ht_capa &= ht_capa_mask. */
|
|
void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
|
|
const struct ieee80211_ht_cap *ht_capa_mask)
|
|
{
|
|
int i;
|
|
u8 *p1, *p2;
|
|
if (!ht_capa_mask) {
|
|
memset(ht_capa, 0, sizeof(*ht_capa));
|
|
return;
|
|
}
|
|
|
|
p1 = (u8*)(ht_capa);
|
|
p2 = (u8*)(ht_capa_mask);
|
|
for (i = 0; i<sizeof(*ht_capa); i++)
|
|
p1[i] &= p2[i];
|
|
}
|
|
|
|
/* Do a logical ht_capa &= ht_capa_mask. */
|
|
void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
|
|
const struct ieee80211_vht_cap *vht_capa_mask)
|
|
{
|
|
int i;
|
|
u8 *p1, *p2;
|
|
if (!vht_capa_mask) {
|
|
memset(vht_capa, 0, sizeof(*vht_capa));
|
|
return;
|
|
}
|
|
|
|
p1 = (u8*)(vht_capa);
|
|
p2 = (u8*)(vht_capa_mask);
|
|
for (i = 0; i < sizeof(*vht_capa); i++)
|
|
p1[i] &= p2[i];
|
|
}
|
|
|
|
int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct ieee80211_channel *chan,
|
|
const u8 *bssid, const u8 *prev_bssid,
|
|
const u8 *ssid, int ssid_len,
|
|
const u8 *ie, int ie_len, bool use_mfp,
|
|
struct cfg80211_crypto_settings *crypt,
|
|
u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
|
|
struct ieee80211_ht_cap *ht_capa_mask,
|
|
struct ieee80211_vht_cap *vht_capa,
|
|
struct ieee80211_vht_cap *vht_capa_mask)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_assoc_request req;
|
|
int err;
|
|
bool was_connected = false;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
if (wdev->current_bss && prev_bssid &&
|
|
ether_addr_equal(wdev->current_bss->pub.bssid, prev_bssid)) {
|
|
/*
|
|
* Trying to reassociate: Allow this to proceed and let the old
|
|
* association to be dropped when the new one is completed.
|
|
*/
|
|
if (wdev->sme_state == CFG80211_SME_CONNECTED) {
|
|
was_connected = true;
|
|
wdev->sme_state = CFG80211_SME_CONNECTING;
|
|
}
|
|
} else if (wdev->current_bss)
|
|
return -EALREADY;
|
|
|
|
req.ie = ie;
|
|
req.ie_len = ie_len;
|
|
memcpy(&req.crypto, crypt, sizeof(req.crypto));
|
|
req.use_mfp = use_mfp;
|
|
req.prev_bssid = prev_bssid;
|
|
req.flags = assoc_flags;
|
|
if (ht_capa)
|
|
memcpy(&req.ht_capa, ht_capa, sizeof(req.ht_capa));
|
|
if (ht_capa_mask)
|
|
memcpy(&req.ht_capa_mask, ht_capa_mask,
|
|
sizeof(req.ht_capa_mask));
|
|
cfg80211_oper_and_ht_capa(&req.ht_capa_mask,
|
|
rdev->wiphy.ht_capa_mod_mask);
|
|
if (vht_capa)
|
|
memcpy(&req.vht_capa, vht_capa, sizeof(req.vht_capa));
|
|
if (vht_capa_mask)
|
|
memcpy(&req.vht_capa_mask, vht_capa_mask,
|
|
sizeof(req.vht_capa_mask));
|
|
cfg80211_oper_and_vht_capa(&req.vht_capa_mask,
|
|
rdev->wiphy.vht_capa_mod_mask);
|
|
|
|
req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
|
|
WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
|
|
if (!req.bss) {
|
|
if (was_connected)
|
|
wdev->sme_state = CFG80211_SME_CONNECTED;
|
|
return -ENOENT;
|
|
}
|
|
|
|
err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel,
|
|
CHAN_MODE_SHARED);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = rdev_assoc(rdev, dev, &req);
|
|
|
|
out:
|
|
if (err) {
|
|
if (was_connected)
|
|
wdev->sme_state = CFG80211_SME_CONNECTED;
|
|
cfg80211_put_bss(&rdev->wiphy, req.bss);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct ieee80211_channel *chan,
|
|
const u8 *bssid, const u8 *prev_bssid,
|
|
const u8 *ssid, int ssid_len,
|
|
const u8 *ie, int ie_len, bool use_mfp,
|
|
struct cfg80211_crypto_settings *crypt,
|
|
u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
|
|
struct ieee80211_ht_cap *ht_capa_mask,
|
|
struct ieee80211_vht_cap *vht_capa,
|
|
struct ieee80211_vht_cap *vht_capa_mask)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
int err;
|
|
|
|
mutex_lock(&rdev->devlist_mtx);
|
|
wdev_lock(wdev);
|
|
err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
|
|
ssid, ssid_len, ie, ie_len, use_mfp, crypt,
|
|
assoc_flags, ht_capa, ht_capa_mask,
|
|
vht_capa, vht_capa_mask);
|
|
wdev_unlock(wdev);
|
|
mutex_unlock(&rdev->devlist_mtx);
|
|
|
|
return err;
|
|
}
|
|
|
|
int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, const u8 *bssid,
|
|
const u8 *ie, int ie_len, u16 reason,
|
|
bool local_state_change)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_deauth_request req = {
|
|
.bssid = bssid,
|
|
.reason_code = reason,
|
|
.ie = ie,
|
|
.ie_len = ie_len,
|
|
.local_state_change = local_state_change,
|
|
};
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (local_state_change && (!wdev->current_bss ||
|
|
!ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
|
|
return 0;
|
|
|
|
return rdev_deauth(rdev, dev, &req);
|
|
}
|
|
|
|
int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, const u8 *bssid,
|
|
const u8 *ie, int ie_len, u16 reason,
|
|
bool local_state_change)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
int err;
|
|
|
|
wdev_lock(wdev);
|
|
err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason,
|
|
local_state_change);
|
|
wdev_unlock(wdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, const u8 *bssid,
|
|
const u8 *ie, int ie_len, u16 reason,
|
|
bool local_state_change)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_disassoc_request req;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (wdev->sme_state != CFG80211_SME_CONNECTED)
|
|
return -ENOTCONN;
|
|
|
|
if (WARN(!wdev->current_bss, "sme_state=%d\n", wdev->sme_state))
|
|
return -ENOTCONN;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
req.reason_code = reason;
|
|
req.local_state_change = local_state_change;
|
|
req.ie = ie;
|
|
req.ie_len = ie_len;
|
|
if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
|
|
req.bss = &wdev->current_bss->pub;
|
|
else
|
|
return -ENOTCONN;
|
|
|
|
return rdev_disassoc(rdev, dev, &req);
|
|
}
|
|
|
|
int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, const u8 *bssid,
|
|
const u8 *ie, int ie_len, u16 reason,
|
|
bool local_state_change)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
int err;
|
|
|
|
wdev_lock(wdev);
|
|
err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason,
|
|
local_state_change);
|
|
wdev_unlock(wdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_deauth_request req;
|
|
u8 bssid[ETH_ALEN];
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (!rdev->ops->deauth)
|
|
return;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
req.reason_code = WLAN_REASON_DEAUTH_LEAVING;
|
|
req.ie = NULL;
|
|
req.ie_len = 0;
|
|
|
|
if (!wdev->current_bss)
|
|
return;
|
|
|
|
memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
|
|
req.bssid = bssid;
|
|
rdev_deauth(rdev, dev, &req);
|
|
|
|
if (wdev->current_bss) {
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(&rdev->wiphy, &wdev->current_bss->pub);
|
|
wdev->current_bss = NULL;
|
|
}
|
|
}
|
|
|
|
struct cfg80211_mgmt_registration {
|
|
struct list_head list;
|
|
|
|
u32 nlportid;
|
|
|
|
int match_len;
|
|
|
|
__le16 frame_type;
|
|
|
|
u8 match[];
|
|
};
|
|
|
|
int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
|
|
u16 frame_type, const u8 *match_data,
|
|
int match_len)
|
|
{
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
struct cfg80211_mgmt_registration *reg, *nreg;
|
|
int err = 0;
|
|
u16 mgmt_type;
|
|
|
|
if (!wdev->wiphy->mgmt_stypes)
|
|
return -EOPNOTSUPP;
|
|
|
|
if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT)
|
|
return -EINVAL;
|
|
|
|
if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE))
|
|
return -EINVAL;
|
|
|
|
mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
|
|
if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type)))
|
|
return -EINVAL;
|
|
|
|
nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL);
|
|
if (!nreg)
|
|
return -ENOMEM;
|
|
|
|
spin_lock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
|
|
int mlen = min(match_len, reg->match_len);
|
|
|
|
if (frame_type != le16_to_cpu(reg->frame_type))
|
|
continue;
|
|
|
|
if (memcmp(reg->match, match_data, mlen) == 0) {
|
|
err = -EALREADY;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (err) {
|
|
kfree(nreg);
|
|
goto out;
|
|
}
|
|
|
|
memcpy(nreg->match, match_data, match_len);
|
|
nreg->match_len = match_len;
|
|
nreg->nlportid = snd_portid;
|
|
nreg->frame_type = cpu_to_le16(frame_type);
|
|
list_add(&nreg->list, &wdev->mgmt_registrations);
|
|
|
|
if (rdev->ops->mgmt_frame_register)
|
|
rdev_mgmt_frame_register(rdev, wdev, frame_type, true);
|
|
|
|
out:
|
|
spin_unlock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
|
|
{
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
struct cfg80211_mgmt_registration *reg, *tmp;
|
|
|
|
spin_lock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
|
|
if (reg->nlportid != nlportid)
|
|
continue;
|
|
|
|
if (rdev->ops->mgmt_frame_register) {
|
|
u16 frame_type = le16_to_cpu(reg->frame_type);
|
|
|
|
rdev_mgmt_frame_register(rdev, wdev,
|
|
frame_type, false);
|
|
}
|
|
|
|
list_del(®->list);
|
|
kfree(reg);
|
|
}
|
|
|
|
spin_unlock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
if (nlportid == wdev->ap_unexpected_nlportid)
|
|
wdev->ap_unexpected_nlportid = 0;
|
|
}
|
|
|
|
void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
|
|
{
|
|
struct cfg80211_mgmt_registration *reg, *tmp;
|
|
|
|
spin_lock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
|
|
list_del(®->list);
|
|
kfree(reg);
|
|
}
|
|
|
|
spin_unlock_bh(&wdev->mgmt_registrations_lock);
|
|
}
|
|
|
|
int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
|
|
struct wireless_dev *wdev,
|
|
struct ieee80211_channel *chan, bool offchan,
|
|
unsigned int wait, const u8 *buf, size_t len,
|
|
bool no_cck, bool dont_wait_for_ack, u64 *cookie)
|
|
{
|
|
const struct ieee80211_mgmt *mgmt;
|
|
u16 stype;
|
|
|
|
if (!wdev->wiphy->mgmt_stypes)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!rdev->ops->mgmt_tx)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (len < 24 + 1)
|
|
return -EINVAL;
|
|
|
|
mgmt = (const struct ieee80211_mgmt *) buf;
|
|
|
|
if (!ieee80211_is_mgmt(mgmt->frame_control))
|
|
return -EINVAL;
|
|
|
|
stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
|
|
if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4)))
|
|
return -EINVAL;
|
|
|
|
if (ieee80211_is_action(mgmt->frame_control) &&
|
|
mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) {
|
|
int err = 0;
|
|
|
|
wdev_lock(wdev);
|
|
|
|
switch (wdev->iftype) {
|
|
case NL80211_IFTYPE_ADHOC:
|
|
case NL80211_IFTYPE_STATION:
|
|
case NL80211_IFTYPE_P2P_CLIENT:
|
|
if (!wdev->current_bss) {
|
|
err = -ENOTCONN;
|
|
break;
|
|
}
|
|
|
|
if (!ether_addr_equal(wdev->current_bss->pub.bssid,
|
|
mgmt->bssid)) {
|
|
err = -ENOTCONN;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* check for IBSS DA must be done by driver as
|
|
* cfg80211 doesn't track the stations
|
|
*/
|
|
if (wdev->iftype == NL80211_IFTYPE_ADHOC)
|
|
break;
|
|
|
|
/* for station, check that DA is the AP */
|
|
if (!ether_addr_equal(wdev->current_bss->pub.bssid,
|
|
mgmt->da)) {
|
|
err = -ENOTCONN;
|
|
break;
|
|
}
|
|
break;
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_P2P_GO:
|
|
case NL80211_IFTYPE_AP_VLAN:
|
|
if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev)))
|
|
err = -EINVAL;
|
|
break;
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) {
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
/*
|
|
* check for mesh DA must be done by driver as
|
|
* cfg80211 doesn't track the stations
|
|
*/
|
|
break;
|
|
case NL80211_IFTYPE_P2P_DEVICE:
|
|
/*
|
|
* fall through, P2P device only supports
|
|
* public action frames
|
|
*/
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
wdev_unlock(wdev);
|
|
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (!ether_addr_equal(mgmt->sa, wdev_address(wdev)))
|
|
return -EINVAL;
|
|
|
|
/* Transmit the Action frame as requested by user space */
|
|
return rdev_mgmt_tx(rdev, wdev, chan, offchan,
|
|
wait, buf, len, no_cck, dont_wait_for_ack,
|
|
cookie);
|
|
}
|
|
|
|
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_mbm,
|
|
const u8 *buf, size_t len, gfp_t gfp)
|
|
{
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
struct cfg80211_mgmt_registration *reg;
|
|
const struct ieee80211_txrx_stypes *stypes =
|
|
&wiphy->mgmt_stypes[wdev->iftype];
|
|
struct ieee80211_mgmt *mgmt = (void *)buf;
|
|
const u8 *data;
|
|
int data_len;
|
|
bool result = false;
|
|
__le16 ftype = mgmt->frame_control &
|
|
cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE);
|
|
u16 stype;
|
|
|
|
trace_cfg80211_rx_mgmt(wdev, freq, sig_mbm);
|
|
stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4;
|
|
|
|
if (!(stypes->rx & BIT(stype))) {
|
|
trace_cfg80211_return_bool(false);
|
|
return false;
|
|
}
|
|
|
|
data = buf + ieee80211_hdrlen(mgmt->frame_control);
|
|
data_len = len - ieee80211_hdrlen(mgmt->frame_control);
|
|
|
|
spin_lock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
|
|
if (reg->frame_type != ftype)
|
|
continue;
|
|
|
|
if (reg->match_len > data_len)
|
|
continue;
|
|
|
|
if (memcmp(reg->match, data, reg->match_len))
|
|
continue;
|
|
|
|
/* found match! */
|
|
|
|
/* Indicate the received Action frame to user space */
|
|
if (nl80211_send_mgmt(rdev, wdev, reg->nlportid,
|
|
freq, sig_mbm,
|
|
buf, len, gfp))
|
|
continue;
|
|
|
|
result = true;
|
|
break;
|
|
}
|
|
|
|
spin_unlock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
trace_cfg80211_return_bool(result);
|
|
return result;
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_rx_mgmt);
|
|
|
|
void cfg80211_dfs_channels_update_work(struct work_struct *work)
|
|
{
|
|
struct delayed_work *delayed_work;
|
|
struct cfg80211_registered_device *rdev;
|
|
struct cfg80211_chan_def chandef;
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_channel *c;
|
|
struct wiphy *wiphy;
|
|
bool check_again = false;
|
|
unsigned long timeout, next_time = 0;
|
|
int bandid, i;
|
|
|
|
delayed_work = container_of(work, struct delayed_work, work);
|
|
rdev = container_of(delayed_work, struct cfg80211_registered_device,
|
|
dfs_update_channels_wk);
|
|
wiphy = &rdev->wiphy;
|
|
|
|
mutex_lock(&cfg80211_mutex);
|
|
for (bandid = 0; bandid < IEEE80211_NUM_BANDS; bandid++) {
|
|
sband = wiphy->bands[bandid];
|
|
if (!sband)
|
|
continue;
|
|
|
|
for (i = 0; i < sband->n_channels; i++) {
|
|
c = &sband->channels[i];
|
|
|
|
if (c->dfs_state != NL80211_DFS_UNAVAILABLE)
|
|
continue;
|
|
|
|
timeout = c->dfs_state_entered +
|
|
IEEE80211_DFS_MIN_NOP_TIME_MS;
|
|
|
|
if (time_after_eq(jiffies, timeout)) {
|
|
c->dfs_state = NL80211_DFS_USABLE;
|
|
cfg80211_chandef_create(&chandef, c,
|
|
NL80211_CHAN_NO_HT);
|
|
|
|
nl80211_radar_notify(rdev, &chandef,
|
|
NL80211_RADAR_NOP_FINISHED,
|
|
NULL, GFP_ATOMIC);
|
|
continue;
|
|
}
|
|
|
|
if (!check_again)
|
|
next_time = timeout - jiffies;
|
|
else
|
|
next_time = min(next_time, timeout - jiffies);
|
|
check_again = true;
|
|
}
|
|
}
|
|
mutex_unlock(&cfg80211_mutex);
|
|
|
|
/* reschedule if there are other channels waiting to be cleared again */
|
|
if (check_again)
|
|
queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
|
|
next_time);
|
|
}
|
|
|
|
|
|
void cfg80211_radar_event(struct wiphy *wiphy,
|
|
struct cfg80211_chan_def *chandef,
|
|
gfp_t gfp)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
unsigned long timeout;
|
|
|
|
trace_cfg80211_radar_event(wiphy, chandef);
|
|
|
|
/* only set the chandef supplied channel to unavailable, in
|
|
* case the radar is detected on only one of multiple channels
|
|
* spanned by the chandef.
|
|
*/
|
|
cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
|
|
|
|
timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_NOP_TIME_MS);
|
|
queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
|
|
timeout);
|
|
|
|
nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_radar_event);
|
|
|
|
void cfg80211_cac_event(struct net_device *netdev,
|
|
enum nl80211_radar_event event, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = netdev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
struct cfg80211_chan_def chandef;
|
|
unsigned long timeout;
|
|
|
|
trace_cfg80211_cac_event(netdev, event);
|
|
|
|
if (WARN_ON(!wdev->cac_started))
|
|
return;
|
|
|
|
if (WARN_ON(!wdev->channel))
|
|
return;
|
|
|
|
cfg80211_chandef_create(&chandef, wdev->channel, NL80211_CHAN_NO_HT);
|
|
|
|
switch (event) {
|
|
case NL80211_RADAR_CAC_FINISHED:
|
|
timeout = wdev->cac_start_time +
|
|
msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
|
|
WARN_ON(!time_after_eq(jiffies, timeout));
|
|
cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_AVAILABLE);
|
|
break;
|
|
case NL80211_RADAR_CAC_ABORTED:
|
|
break;
|
|
default:
|
|
WARN_ON(1);
|
|
return;
|
|
}
|
|
wdev->cac_started = false;
|
|
|
|
nl80211_radar_notify(rdev, &chandef, event, netdev, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_cac_event);
|