mirror of
https://github.com/torvalds/linux.git
synced 2024-12-11 21:52:04 +00:00
1b5ab825d9
A WARN_ON(wdev->conn) would trigger in cfg80211_sme_connect(), if multiple send_msg(NL80211_CMD_CONNECT) system calls are made from the userland, which should be anticipated and handled by the wireless driver. Remove this WARN_ON() to prevent kernel panic if kernel is configured to "panic_on_warn". Bug reported by syzbot. Reported-by: syzbot+5f9392825de654244975@syzkaller.appspotmail.com Signed-off-by: Du Cheng <ducheng2@gmail.com> Link: https://lore.kernel.org/r/20210407162756.6101-1-ducheng2@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
1355 lines
36 KiB
C
1355 lines
36 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* SME code for cfg80211
|
|
* both driver SME event handling and the SME implementation
|
|
* (for nl80211's connect() and wext)
|
|
*
|
|
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
|
|
* Copyright (C) 2009, 2020 Intel Corporation. All rights reserved.
|
|
* Copyright 2017 Intel Deutschland GmbH
|
|
*/
|
|
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/if_arp.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/wireless.h>
|
|
#include <linux/export.h>
|
|
#include <net/iw_handler.h>
|
|
#include <net/cfg80211.h>
|
|
#include <net/rtnetlink.h>
|
|
#include "nl80211.h"
|
|
#include "reg.h"
|
|
#include "rdev-ops.h"
|
|
|
|
/*
|
|
* Software SME in cfg80211, using auth/assoc/deauth calls to the
|
|
* driver. This is for implementing nl80211's connect/disconnect
|
|
* and wireless extensions (if configured.)
|
|
*/
|
|
|
|
struct cfg80211_conn {
|
|
struct cfg80211_connect_params params;
|
|
/* these are sub-states of the _CONNECTING sme_state */
|
|
enum {
|
|
CFG80211_CONN_SCANNING,
|
|
CFG80211_CONN_SCAN_AGAIN,
|
|
CFG80211_CONN_AUTHENTICATE_NEXT,
|
|
CFG80211_CONN_AUTHENTICATING,
|
|
CFG80211_CONN_AUTH_FAILED_TIMEOUT,
|
|
CFG80211_CONN_ASSOCIATE_NEXT,
|
|
CFG80211_CONN_ASSOCIATING,
|
|
CFG80211_CONN_ASSOC_FAILED,
|
|
CFG80211_CONN_ASSOC_FAILED_TIMEOUT,
|
|
CFG80211_CONN_DEAUTH,
|
|
CFG80211_CONN_ABANDON,
|
|
CFG80211_CONN_CONNECTED,
|
|
} state;
|
|
u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
|
|
const u8 *ie;
|
|
size_t ie_len;
|
|
bool auto_auth, prev_bssid_valid;
|
|
};
|
|
|
|
static void cfg80211_sme_free(struct wireless_dev *wdev)
|
|
{
|
|
if (!wdev->conn)
|
|
return;
|
|
|
|
kfree(wdev->conn->ie);
|
|
kfree(wdev->conn);
|
|
wdev->conn = NULL;
|
|
}
|
|
|
|
static int cfg80211_conn_scan(struct wireless_dev *wdev)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_scan_request *request;
|
|
int n_channels, err;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (rdev->scan_req || rdev->scan_msg)
|
|
return -EBUSY;
|
|
|
|
if (wdev->conn->params.channel)
|
|
n_channels = 1;
|
|
else
|
|
n_channels = ieee80211_get_num_supported_channels(wdev->wiphy);
|
|
|
|
request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
|
|
sizeof(request->channels[0]) * n_channels,
|
|
GFP_KERNEL);
|
|
if (!request)
|
|
return -ENOMEM;
|
|
|
|
if (wdev->conn->params.channel) {
|
|
enum nl80211_band band = wdev->conn->params.channel->band;
|
|
struct ieee80211_supported_band *sband =
|
|
wdev->wiphy->bands[band];
|
|
|
|
if (!sband) {
|
|
kfree(request);
|
|
return -EINVAL;
|
|
}
|
|
request->channels[0] = wdev->conn->params.channel;
|
|
request->rates[band] = (1 << sband->n_bitrates) - 1;
|
|
} else {
|
|
int i = 0, j;
|
|
enum nl80211_band band;
|
|
struct ieee80211_supported_band *bands;
|
|
struct ieee80211_channel *channel;
|
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) {
|
|
bands = wdev->wiphy->bands[band];
|
|
if (!bands)
|
|
continue;
|
|
for (j = 0; j < bands->n_channels; j++) {
|
|
channel = &bands->channels[j];
|
|
if (channel->flags & IEEE80211_CHAN_DISABLED)
|
|
continue;
|
|
request->channels[i++] = channel;
|
|
}
|
|
request->rates[band] = (1 << bands->n_bitrates) - 1;
|
|
}
|
|
n_channels = i;
|
|
}
|
|
request->n_channels = n_channels;
|
|
request->ssids = (void *)&request->channels[n_channels];
|
|
request->n_ssids = 1;
|
|
|
|
memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
|
|
wdev->conn->params.ssid_len);
|
|
request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
|
|
|
|
eth_broadcast_addr(request->bssid);
|
|
|
|
request->wdev = wdev;
|
|
request->wiphy = &rdev->wiphy;
|
|
request->scan_start = jiffies;
|
|
|
|
rdev->scan_req = request;
|
|
|
|
err = rdev_scan(rdev, request);
|
|
if (!err) {
|
|
wdev->conn->state = CFG80211_CONN_SCANNING;
|
|
nl80211_send_scan_start(rdev, wdev);
|
|
dev_hold(wdev->netdev);
|
|
} else {
|
|
rdev->scan_req = NULL;
|
|
kfree(request);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int cfg80211_conn_do_work(struct wireless_dev *wdev,
|
|
enum nl80211_timeout_reason *treason)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_connect_params *params;
|
|
struct cfg80211_assoc_request req = {};
|
|
int err;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (!wdev->conn)
|
|
return 0;
|
|
|
|
params = &wdev->conn->params;
|
|
|
|
switch (wdev->conn->state) {
|
|
case CFG80211_CONN_SCANNING:
|
|
/* didn't find it during scan ... */
|
|
return -ENOENT;
|
|
case CFG80211_CONN_SCAN_AGAIN:
|
|
return cfg80211_conn_scan(wdev);
|
|
case CFG80211_CONN_AUTHENTICATE_NEXT:
|
|
if (WARN_ON(!rdev->ops->auth))
|
|
return -EOPNOTSUPP;
|
|
wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
|
|
return cfg80211_mlme_auth(rdev, wdev->netdev,
|
|
params->channel, params->auth_type,
|
|
params->bssid,
|
|
params->ssid, params->ssid_len,
|
|
NULL, 0,
|
|
params->key, params->key_len,
|
|
params->key_idx, NULL, 0);
|
|
case CFG80211_CONN_AUTH_FAILED_TIMEOUT:
|
|
*treason = NL80211_TIMEOUT_AUTH;
|
|
return -ENOTCONN;
|
|
case CFG80211_CONN_ASSOCIATE_NEXT:
|
|
if (WARN_ON(!rdev->ops->assoc))
|
|
return -EOPNOTSUPP;
|
|
wdev->conn->state = CFG80211_CONN_ASSOCIATING;
|
|
if (wdev->conn->prev_bssid_valid)
|
|
req.prev_bssid = wdev->conn->prev_bssid;
|
|
req.ie = params->ie;
|
|
req.ie_len = params->ie_len;
|
|
req.use_mfp = params->mfp != NL80211_MFP_NO;
|
|
req.crypto = params->crypto;
|
|
req.flags = params->flags;
|
|
req.ht_capa = params->ht_capa;
|
|
req.ht_capa_mask = params->ht_capa_mask;
|
|
req.vht_capa = params->vht_capa;
|
|
req.vht_capa_mask = params->vht_capa_mask;
|
|
|
|
err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
|
|
params->bssid, params->ssid,
|
|
params->ssid_len, &req);
|
|
if (err)
|
|
cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
|
|
NULL, 0,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
false);
|
|
return err;
|
|
case CFG80211_CONN_ASSOC_FAILED_TIMEOUT:
|
|
*treason = NL80211_TIMEOUT_ASSOC;
|
|
fallthrough;
|
|
case CFG80211_CONN_ASSOC_FAILED:
|
|
cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
|
|
NULL, 0,
|
|
WLAN_REASON_DEAUTH_LEAVING, false);
|
|
return -ENOTCONN;
|
|
case CFG80211_CONN_DEAUTH:
|
|
cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
|
|
NULL, 0,
|
|
WLAN_REASON_DEAUTH_LEAVING, false);
|
|
fallthrough;
|
|
case CFG80211_CONN_ABANDON:
|
|
/* free directly, disconnected event already sent */
|
|
cfg80211_sme_free(wdev);
|
|
return 0;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void cfg80211_conn_work(struct work_struct *work)
|
|
{
|
|
struct cfg80211_registered_device *rdev =
|
|
container_of(work, struct cfg80211_registered_device, conn_work);
|
|
struct wireless_dev *wdev;
|
|
u8 bssid_buf[ETH_ALEN], *bssid = NULL;
|
|
enum nl80211_timeout_reason treason;
|
|
|
|
wiphy_lock(&rdev->wiphy);
|
|
|
|
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
|
|
if (!wdev->netdev)
|
|
continue;
|
|
|
|
wdev_lock(wdev);
|
|
if (!netif_running(wdev->netdev)) {
|
|
wdev_unlock(wdev);
|
|
continue;
|
|
}
|
|
if (!wdev->conn ||
|
|
wdev->conn->state == CFG80211_CONN_CONNECTED) {
|
|
wdev_unlock(wdev);
|
|
continue;
|
|
}
|
|
if (wdev->conn->params.bssid) {
|
|
memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
|
|
bssid = bssid_buf;
|
|
}
|
|
treason = NL80211_TIMEOUT_UNSPECIFIED;
|
|
if (cfg80211_conn_do_work(wdev, &treason)) {
|
|
struct cfg80211_connect_resp_params cr;
|
|
|
|
memset(&cr, 0, sizeof(cr));
|
|
cr.status = -1;
|
|
cr.bssid = bssid;
|
|
cr.timeout_reason = treason;
|
|
__cfg80211_connect_result(wdev->netdev, &cr, false);
|
|
}
|
|
wdev_unlock(wdev);
|
|
}
|
|
|
|
wiphy_unlock(&rdev->wiphy);
|
|
}
|
|
|
|
/* Returned bss is reference counted and must be cleaned up appropriately. */
|
|
static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_bss *bss;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
|
|
wdev->conn->params.bssid,
|
|
wdev->conn->params.ssid,
|
|
wdev->conn->params.ssid_len,
|
|
wdev->conn_bss_type,
|
|
IEEE80211_PRIVACY(wdev->conn->params.privacy));
|
|
if (!bss)
|
|
return NULL;
|
|
|
|
memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
|
|
wdev->conn->params.bssid = wdev->conn->bssid;
|
|
wdev->conn->params.channel = bss->channel;
|
|
wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
|
|
schedule_work(&rdev->conn_work);
|
|
|
|
return bss;
|
|
}
|
|
|
|
static void __cfg80211_sme_scan_done(struct net_device *dev)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_bss *bss;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (!wdev->conn)
|
|
return;
|
|
|
|
if (wdev->conn->state != CFG80211_CONN_SCANNING &&
|
|
wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
|
|
return;
|
|
|
|
bss = cfg80211_get_conn_bss(wdev);
|
|
if (bss)
|
|
cfg80211_put_bss(&rdev->wiphy, bss);
|
|
else
|
|
schedule_work(&rdev->conn_work);
|
|
}
|
|
|
|
void cfg80211_sme_scan_done(struct net_device *dev)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
|
|
wdev_lock(wdev);
|
|
__cfg80211_sme_scan_done(dev);
|
|
wdev_unlock(wdev);
|
|
}
|
|
|
|
void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
|
|
{
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
|
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
|
|
u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
|
|
return;
|
|
|
|
if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
|
|
wdev->conn->auto_auth &&
|
|
wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
|
|
/* select automatically between only open, shared, leap */
|
|
switch (wdev->conn->params.auth_type) {
|
|
case NL80211_AUTHTYPE_OPEN_SYSTEM:
|
|
if (wdev->connect_keys)
|
|
wdev->conn->params.auth_type =
|
|
NL80211_AUTHTYPE_SHARED_KEY;
|
|
else
|
|
wdev->conn->params.auth_type =
|
|
NL80211_AUTHTYPE_NETWORK_EAP;
|
|
break;
|
|
case NL80211_AUTHTYPE_SHARED_KEY:
|
|
wdev->conn->params.auth_type =
|
|
NL80211_AUTHTYPE_NETWORK_EAP;
|
|
break;
|
|
default:
|
|
/* huh? */
|
|
wdev->conn->params.auth_type =
|
|
NL80211_AUTHTYPE_OPEN_SYSTEM;
|
|
break;
|
|
}
|
|
wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
|
|
schedule_work(&rdev->conn_work);
|
|
} else if (status_code != WLAN_STATUS_SUCCESS) {
|
|
struct cfg80211_connect_resp_params cr;
|
|
|
|
memset(&cr, 0, sizeof(cr));
|
|
cr.status = status_code;
|
|
cr.bssid = mgmt->bssid;
|
|
cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED;
|
|
__cfg80211_connect_result(wdev->netdev, &cr, false);
|
|
} else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
|
|
wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
|
|
schedule_work(&rdev->conn_work);
|
|
}
|
|
}
|
|
|
|
bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
|
|
if (!wdev->conn)
|
|
return false;
|
|
|
|
if (status == WLAN_STATUS_SUCCESS) {
|
|
wdev->conn->state = CFG80211_CONN_CONNECTED;
|
|
return false;
|
|
}
|
|
|
|
if (wdev->conn->prev_bssid_valid) {
|
|
/*
|
|
* Some stupid APs don't accept reassoc, so we
|
|
* need to fall back to trying regular assoc;
|
|
* return true so no event is sent to userspace.
|
|
*/
|
|
wdev->conn->prev_bssid_valid = false;
|
|
wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
|
|
schedule_work(&rdev->conn_work);
|
|
return true;
|
|
}
|
|
|
|
wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
|
|
schedule_work(&rdev->conn_work);
|
|
return false;
|
|
}
|
|
|
|
void cfg80211_sme_deauth(struct wireless_dev *wdev)
|
|
{
|
|
cfg80211_sme_free(wdev);
|
|
}
|
|
|
|
void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
|
|
if (!wdev->conn)
|
|
return;
|
|
|
|
wdev->conn->state = CFG80211_CONN_AUTH_FAILED_TIMEOUT;
|
|
schedule_work(&rdev->conn_work);
|
|
}
|
|
|
|
void cfg80211_sme_disassoc(struct wireless_dev *wdev)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
|
|
if (!wdev->conn)
|
|
return;
|
|
|
|
wdev->conn->state = CFG80211_CONN_DEAUTH;
|
|
schedule_work(&rdev->conn_work);
|
|
}
|
|
|
|
void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
|
|
if (!wdev->conn)
|
|
return;
|
|
|
|
wdev->conn->state = CFG80211_CONN_ASSOC_FAILED_TIMEOUT;
|
|
schedule_work(&rdev->conn_work);
|
|
}
|
|
|
|
void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
|
|
if (!wdev->conn)
|
|
return;
|
|
|
|
wdev->conn->state = CFG80211_CONN_ABANDON;
|
|
schedule_work(&rdev->conn_work);
|
|
}
|
|
|
|
static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
|
|
const u8 *ies, size_t ies_len,
|
|
const u8 **out_ies, size_t *out_ies_len)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
u8 *buf;
|
|
size_t offs;
|
|
|
|
if (!rdev->wiphy.extended_capabilities_len ||
|
|
(ies && cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, ies, ies_len))) {
|
|
*out_ies = kmemdup(ies, ies_len, GFP_KERNEL);
|
|
if (!*out_ies)
|
|
return -ENOMEM;
|
|
*out_ies_len = ies_len;
|
|
return 0;
|
|
}
|
|
|
|
buf = kmalloc(ies_len + rdev->wiphy.extended_capabilities_len + 2,
|
|
GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
if (ies_len) {
|
|
static const u8 before_extcapa[] = {
|
|
/* not listing IEs expected to be created by driver */
|
|
WLAN_EID_RSN,
|
|
WLAN_EID_QOS_CAPA,
|
|
WLAN_EID_RRM_ENABLED_CAPABILITIES,
|
|
WLAN_EID_MOBILITY_DOMAIN,
|
|
WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
|
|
WLAN_EID_BSS_COEX_2040,
|
|
};
|
|
|
|
offs = ieee80211_ie_split(ies, ies_len, before_extcapa,
|
|
ARRAY_SIZE(before_extcapa), 0);
|
|
memcpy(buf, ies, offs);
|
|
/* leave a whole for extended capabilities IE */
|
|
memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2,
|
|
ies + offs, ies_len - offs);
|
|
} else {
|
|
offs = 0;
|
|
}
|
|
|
|
/* place extended capabilities IE (with only driver capabilities) */
|
|
buf[offs] = WLAN_EID_EXT_CAPABILITY;
|
|
buf[offs + 1] = rdev->wiphy.extended_capabilities_len;
|
|
memcpy(buf + offs + 2,
|
|
rdev->wiphy.extended_capabilities,
|
|
rdev->wiphy.extended_capabilities_len);
|
|
|
|
*out_ies = buf;
|
|
*out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cfg80211_sme_connect(struct wireless_dev *wdev,
|
|
struct cfg80211_connect_params *connect,
|
|
const u8 *prev_bssid)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_bss *bss;
|
|
int err;
|
|
|
|
if (!rdev->ops->auth || !rdev->ops->assoc)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (wdev->current_bss) {
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
|
|
wdev->current_bss = NULL;
|
|
|
|
cfg80211_sme_free(wdev);
|
|
}
|
|
|
|
if (wdev->conn)
|
|
return -EINPROGRESS;
|
|
|
|
wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
|
|
if (!wdev->conn)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* Copy all parameters, and treat explicitly IEs, BSSID, SSID.
|
|
*/
|
|
memcpy(&wdev->conn->params, connect, sizeof(*connect));
|
|
if (connect->bssid) {
|
|
wdev->conn->params.bssid = wdev->conn->bssid;
|
|
memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
|
|
}
|
|
|
|
if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len,
|
|
&wdev->conn->ie,
|
|
&wdev->conn->params.ie_len)) {
|
|
kfree(wdev->conn);
|
|
wdev->conn = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
wdev->conn->params.ie = wdev->conn->ie;
|
|
|
|
if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
|
|
wdev->conn->auto_auth = true;
|
|
/* start with open system ... should mostly work */
|
|
wdev->conn->params.auth_type =
|
|
NL80211_AUTHTYPE_OPEN_SYSTEM;
|
|
} else {
|
|
wdev->conn->auto_auth = false;
|
|
}
|
|
|
|
wdev->conn->params.ssid = wdev->ssid;
|
|
wdev->conn->params.ssid_len = wdev->ssid_len;
|
|
|
|
/* see if we have the bss already */
|
|
bss = cfg80211_get_conn_bss(wdev);
|
|
|
|
if (prev_bssid) {
|
|
memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
|
|
wdev->conn->prev_bssid_valid = true;
|
|
}
|
|
|
|
/* we're good if we have a matching bss struct */
|
|
if (bss) {
|
|
enum nl80211_timeout_reason treason;
|
|
|
|
err = cfg80211_conn_do_work(wdev, &treason);
|
|
cfg80211_put_bss(wdev->wiphy, bss);
|
|
} else {
|
|
/* otherwise we'll need to scan for the AP first */
|
|
err = cfg80211_conn_scan(wdev);
|
|
|
|
/*
|
|
* If we can't scan right now, then we need to scan again
|
|
* after the current scan finished, since the parameters
|
|
* changed (unless we find a good AP anyway).
|
|
*/
|
|
if (err == -EBUSY) {
|
|
err = 0;
|
|
wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
|
|
}
|
|
}
|
|
|
|
if (err)
|
|
cfg80211_sme_free(wdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
|
|
{
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
int err;
|
|
|
|
if (!wdev->conn)
|
|
return 0;
|
|
|
|
if (!rdev->ops->deauth)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (wdev->conn->state == CFG80211_CONN_SCANNING ||
|
|
wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
|
|
err = 0;
|
|
goto out;
|
|
}
|
|
|
|
/* wdev->conn->params.bssid must be set if > SCANNING */
|
|
err = cfg80211_mlme_deauth(rdev, wdev->netdev,
|
|
wdev->conn->params.bssid,
|
|
NULL, 0, reason, false);
|
|
out:
|
|
cfg80211_sme_free(wdev);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* code shared for in-device and software SME
|
|
*/
|
|
|
|
static bool cfg80211_is_all_idle(void)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
struct wireless_dev *wdev;
|
|
bool is_all_idle = true;
|
|
|
|
/*
|
|
* All devices must be idle as otherwise if you are actively
|
|
* scanning some new beacon hints could be learned and would
|
|
* count as new regulatory hints.
|
|
* Also if there is any other active beaconing interface we
|
|
* need not issue a disconnect hint and reset any info such
|
|
* as chan dfs state, etc.
|
|
*/
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
|
|
wdev_lock(wdev);
|
|
if (wdev->conn || wdev->current_bss ||
|
|
cfg80211_beaconing_iface_active(wdev))
|
|
is_all_idle = false;
|
|
wdev_unlock(wdev);
|
|
}
|
|
}
|
|
|
|
return is_all_idle;
|
|
}
|
|
|
|
static void disconnect_work(struct work_struct *work)
|
|
{
|
|
rtnl_lock();
|
|
if (cfg80211_is_all_idle())
|
|
regulatory_hint_disconnect();
|
|
rtnl_unlock();
|
|
}
|
|
|
|
DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
|
|
|
|
|
|
/*
|
|
* API calls for drivers implementing connect/disconnect and
|
|
* SME event handling
|
|
*/
|
|
|
|
/* This method must consume bss one way or another */
|
|
void __cfg80211_connect_result(struct net_device *dev,
|
|
struct cfg80211_connect_resp_params *cr,
|
|
bool wextev)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
const u8 *country_ie;
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
union iwreq_data wrqu;
|
|
#endif
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
|
|
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
|
|
cfg80211_put_bss(wdev->wiphy, cr->bss);
|
|
return;
|
|
}
|
|
|
|
wdev->unprot_beacon_reported = 0;
|
|
nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev, cr,
|
|
GFP_KERNEL);
|
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
if (wextev) {
|
|
if (cr->req_ie && cr->status == WLAN_STATUS_SUCCESS) {
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.data.length = cr->req_ie_len;
|
|
wireless_send_event(dev, IWEVASSOCREQIE, &wrqu,
|
|
cr->req_ie);
|
|
}
|
|
|
|
if (cr->resp_ie && cr->status == WLAN_STATUS_SUCCESS) {
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.data.length = cr->resp_ie_len;
|
|
wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu,
|
|
cr->resp_ie);
|
|
}
|
|
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
|
|
if (cr->bssid && cr->status == WLAN_STATUS_SUCCESS) {
|
|
memcpy(wrqu.ap_addr.sa_data, cr->bssid, ETH_ALEN);
|
|
memcpy(wdev->wext.prev_bssid, cr->bssid, ETH_ALEN);
|
|
wdev->wext.prev_bssid_valid = true;
|
|
}
|
|
wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
|
|
}
|
|
#endif
|
|
|
|
if (!cr->bss && (cr->status == WLAN_STATUS_SUCCESS)) {
|
|
WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
|
|
cr->bss = cfg80211_get_bss(wdev->wiphy, NULL, cr->bssid,
|
|
wdev->ssid, wdev->ssid_len,
|
|
wdev->conn_bss_type,
|
|
IEEE80211_PRIVACY_ANY);
|
|
if (cr->bss)
|
|
cfg80211_hold_bss(bss_from_pub(cr->bss));
|
|
}
|
|
|
|
if (wdev->current_bss) {
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
|
|
wdev->current_bss = NULL;
|
|
}
|
|
|
|
if (cr->status != WLAN_STATUS_SUCCESS) {
|
|
kfree_sensitive(wdev->connect_keys);
|
|
wdev->connect_keys = NULL;
|
|
wdev->ssid_len = 0;
|
|
wdev->conn_owner_nlportid = 0;
|
|
if (cr->bss) {
|
|
cfg80211_unhold_bss(bss_from_pub(cr->bss));
|
|
cfg80211_put_bss(wdev->wiphy, cr->bss);
|
|
}
|
|
cfg80211_sme_free(wdev);
|
|
return;
|
|
}
|
|
|
|
if (WARN_ON(!cr->bss))
|
|
return;
|
|
|
|
wdev->current_bss = bss_from_pub(cr->bss);
|
|
|
|
if (!(wdev->wiphy->flags & WIPHY_FLAG_HAS_STATIC_WEP))
|
|
cfg80211_upload_connect_keys(wdev);
|
|
|
|
rcu_read_lock();
|
|
country_ie = ieee80211_bss_get_ie(cr->bss, WLAN_EID_COUNTRY);
|
|
if (!country_ie) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
|
|
country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
|
|
rcu_read_unlock();
|
|
|
|
if (!country_ie)
|
|
return;
|
|
|
|
/*
|
|
* ieee80211_bss_get_ie() ensures we can access:
|
|
* - country_ie + 2, the start of the country ie data, and
|
|
* - and country_ie[1] which is the IE length
|
|
*/
|
|
regulatory_hint_country_ie(wdev->wiphy, cr->bss->channel->band,
|
|
country_ie + 2, country_ie[1]);
|
|
kfree(country_ie);
|
|
}
|
|
|
|
/* Consumes bss object one way or another */
|
|
void cfg80211_connect_done(struct net_device *dev,
|
|
struct cfg80211_connect_resp_params *params,
|
|
gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_event *ev;
|
|
unsigned long flags;
|
|
u8 *next;
|
|
|
|
if (params->bss) {
|
|
struct cfg80211_internal_bss *ibss = bss_from_pub(params->bss);
|
|
|
|
if (list_empty(&ibss->list)) {
|
|
struct cfg80211_bss *found = NULL, *tmp = params->bss;
|
|
|
|
found = cfg80211_get_bss(wdev->wiphy, NULL,
|
|
params->bss->bssid,
|
|
wdev->ssid, wdev->ssid_len,
|
|
wdev->conn_bss_type,
|
|
IEEE80211_PRIVACY_ANY);
|
|
if (found) {
|
|
/* The same BSS is already updated so use it
|
|
* instead, as it has latest info.
|
|
*/
|
|
params->bss = found;
|
|
} else {
|
|
/* Update with BSS provided by driver, it will
|
|
* be freshly added and ref cnted, we can free
|
|
* the old one.
|
|
*
|
|
* signal_valid can be false, as we are not
|
|
* expecting the BSS to be found.
|
|
*
|
|
* keep the old timestamp to avoid confusion
|
|
*/
|
|
cfg80211_bss_update(rdev, ibss, false,
|
|
ibss->ts);
|
|
}
|
|
|
|
cfg80211_put_bss(wdev->wiphy, tmp);
|
|
}
|
|
}
|
|
|
|
ev = kzalloc(sizeof(*ev) + (params->bssid ? ETH_ALEN : 0) +
|
|
params->req_ie_len + params->resp_ie_len +
|
|
params->fils.kek_len + params->fils.pmk_len +
|
|
(params->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
|
|
if (!ev) {
|
|
cfg80211_put_bss(wdev->wiphy, params->bss);
|
|
return;
|
|
}
|
|
|
|
ev->type = EVENT_CONNECT_RESULT;
|
|
next = ((u8 *)ev) + sizeof(*ev);
|
|
if (params->bssid) {
|
|
ev->cr.bssid = next;
|
|
memcpy((void *)ev->cr.bssid, params->bssid, ETH_ALEN);
|
|
next += ETH_ALEN;
|
|
}
|
|
if (params->req_ie_len) {
|
|
ev->cr.req_ie = next;
|
|
ev->cr.req_ie_len = params->req_ie_len;
|
|
memcpy((void *)ev->cr.req_ie, params->req_ie,
|
|
params->req_ie_len);
|
|
next += params->req_ie_len;
|
|
}
|
|
if (params->resp_ie_len) {
|
|
ev->cr.resp_ie = next;
|
|
ev->cr.resp_ie_len = params->resp_ie_len;
|
|
memcpy((void *)ev->cr.resp_ie, params->resp_ie,
|
|
params->resp_ie_len);
|
|
next += params->resp_ie_len;
|
|
}
|
|
if (params->fils.kek_len) {
|
|
ev->cr.fils.kek = next;
|
|
ev->cr.fils.kek_len = params->fils.kek_len;
|
|
memcpy((void *)ev->cr.fils.kek, params->fils.kek,
|
|
params->fils.kek_len);
|
|
next += params->fils.kek_len;
|
|
}
|
|
if (params->fils.pmk_len) {
|
|
ev->cr.fils.pmk = next;
|
|
ev->cr.fils.pmk_len = params->fils.pmk_len;
|
|
memcpy((void *)ev->cr.fils.pmk, params->fils.pmk,
|
|
params->fils.pmk_len);
|
|
next += params->fils.pmk_len;
|
|
}
|
|
if (params->fils.pmkid) {
|
|
ev->cr.fils.pmkid = next;
|
|
memcpy((void *)ev->cr.fils.pmkid, params->fils.pmkid,
|
|
WLAN_PMKID_LEN);
|
|
next += WLAN_PMKID_LEN;
|
|
}
|
|
ev->cr.fils.update_erp_next_seq_num = params->fils.update_erp_next_seq_num;
|
|
if (params->fils.update_erp_next_seq_num)
|
|
ev->cr.fils.erp_next_seq_num = params->fils.erp_next_seq_num;
|
|
if (params->bss)
|
|
cfg80211_hold_bss(bss_from_pub(params->bss));
|
|
ev->cr.bss = params->bss;
|
|
ev->cr.status = params->status;
|
|
ev->cr.timeout_reason = params->timeout_reason;
|
|
|
|
spin_lock_irqsave(&wdev->event_lock, flags);
|
|
list_add_tail(&ev->list, &wdev->event_list);
|
|
spin_unlock_irqrestore(&wdev->event_lock, flags);
|
|
queue_work(cfg80211_wq, &rdev->event_work);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_connect_done);
|
|
|
|
/* Consumes bss object one way or another */
|
|
void __cfg80211_roamed(struct wireless_dev *wdev,
|
|
struct cfg80211_roam_info *info)
|
|
{
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
union iwreq_data wrqu;
|
|
#endif
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
|
|
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
|
|
goto out;
|
|
|
|
if (WARN_ON(!wdev->current_bss))
|
|
goto out;
|
|
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
|
|
wdev->current_bss = NULL;
|
|
|
|
if (WARN_ON(!info->bss))
|
|
return;
|
|
|
|
cfg80211_hold_bss(bss_from_pub(info->bss));
|
|
wdev->current_bss = bss_from_pub(info->bss);
|
|
|
|
wdev->unprot_beacon_reported = 0;
|
|
nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
|
|
wdev->netdev, info, GFP_KERNEL);
|
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
if (info->req_ie) {
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.data.length = info->req_ie_len;
|
|
wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
|
|
&wrqu, info->req_ie);
|
|
}
|
|
|
|
if (info->resp_ie) {
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.data.length = info->resp_ie_len;
|
|
wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
|
|
&wrqu, info->resp_ie);
|
|
}
|
|
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
|
|
memcpy(wrqu.ap_addr.sa_data, info->bss->bssid, ETH_ALEN);
|
|
memcpy(wdev->wext.prev_bssid, info->bss->bssid, ETH_ALEN);
|
|
wdev->wext.prev_bssid_valid = true;
|
|
wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
|
|
#endif
|
|
|
|
return;
|
|
out:
|
|
cfg80211_put_bss(wdev->wiphy, info->bss);
|
|
}
|
|
|
|
/* Consumes info->bss object one way or another */
|
|
void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info,
|
|
gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_event *ev;
|
|
unsigned long flags;
|
|
u8 *next;
|
|
|
|
if (!info->bss) {
|
|
info->bss = cfg80211_get_bss(wdev->wiphy, info->channel,
|
|
info->bssid, wdev->ssid,
|
|
wdev->ssid_len,
|
|
wdev->conn_bss_type,
|
|
IEEE80211_PRIVACY_ANY);
|
|
}
|
|
|
|
if (WARN_ON(!info->bss))
|
|
return;
|
|
|
|
ev = kzalloc(sizeof(*ev) + info->req_ie_len + info->resp_ie_len +
|
|
info->fils.kek_len + info->fils.pmk_len +
|
|
(info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
|
|
if (!ev) {
|
|
cfg80211_put_bss(wdev->wiphy, info->bss);
|
|
return;
|
|
}
|
|
|
|
ev->type = EVENT_ROAMED;
|
|
next = ((u8 *)ev) + sizeof(*ev);
|
|
if (info->req_ie_len) {
|
|
ev->rm.req_ie = next;
|
|
ev->rm.req_ie_len = info->req_ie_len;
|
|
memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len);
|
|
next += info->req_ie_len;
|
|
}
|
|
if (info->resp_ie_len) {
|
|
ev->rm.resp_ie = next;
|
|
ev->rm.resp_ie_len = info->resp_ie_len;
|
|
memcpy((void *)ev->rm.resp_ie, info->resp_ie,
|
|
info->resp_ie_len);
|
|
next += info->resp_ie_len;
|
|
}
|
|
if (info->fils.kek_len) {
|
|
ev->rm.fils.kek = next;
|
|
ev->rm.fils.kek_len = info->fils.kek_len;
|
|
memcpy((void *)ev->rm.fils.kek, info->fils.kek,
|
|
info->fils.kek_len);
|
|
next += info->fils.kek_len;
|
|
}
|
|
if (info->fils.pmk_len) {
|
|
ev->rm.fils.pmk = next;
|
|
ev->rm.fils.pmk_len = info->fils.pmk_len;
|
|
memcpy((void *)ev->rm.fils.pmk, info->fils.pmk,
|
|
info->fils.pmk_len);
|
|
next += info->fils.pmk_len;
|
|
}
|
|
if (info->fils.pmkid) {
|
|
ev->rm.fils.pmkid = next;
|
|
memcpy((void *)ev->rm.fils.pmkid, info->fils.pmkid,
|
|
WLAN_PMKID_LEN);
|
|
next += WLAN_PMKID_LEN;
|
|
}
|
|
ev->rm.fils.update_erp_next_seq_num = info->fils.update_erp_next_seq_num;
|
|
if (info->fils.update_erp_next_seq_num)
|
|
ev->rm.fils.erp_next_seq_num = info->fils.erp_next_seq_num;
|
|
ev->rm.bss = info->bss;
|
|
|
|
spin_lock_irqsave(&wdev->event_lock, flags);
|
|
list_add_tail(&ev->list, &wdev->event_list);
|
|
spin_unlock_irqrestore(&wdev->event_lock, flags);
|
|
queue_work(cfg80211_wq, &rdev->event_work);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_roamed);
|
|
|
|
void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *bssid)
|
|
{
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
|
|
return;
|
|
|
|
if (WARN_ON(!wdev->current_bss) ||
|
|
WARN_ON(!ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
|
|
return;
|
|
|
|
nl80211_send_port_authorized(wiphy_to_rdev(wdev->wiphy), wdev->netdev,
|
|
bssid);
|
|
}
|
|
|
|
void cfg80211_port_authorized(struct net_device *dev, const u8 *bssid,
|
|
gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_event *ev;
|
|
unsigned long flags;
|
|
|
|
if (WARN_ON(!bssid))
|
|
return;
|
|
|
|
ev = kzalloc(sizeof(*ev), gfp);
|
|
if (!ev)
|
|
return;
|
|
|
|
ev->type = EVENT_PORT_AUTHORIZED;
|
|
memcpy(ev->pa.bssid, bssid, ETH_ALEN);
|
|
|
|
/*
|
|
* Use the wdev event list so that if there are pending
|
|
* connected/roamed events, they will be reported first.
|
|
*/
|
|
spin_lock_irqsave(&wdev->event_lock, flags);
|
|
list_add_tail(&ev->list, &wdev->event_list);
|
|
spin_unlock_irqrestore(&wdev->event_lock, flags);
|
|
queue_work(cfg80211_wq, &rdev->event_work);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_port_authorized);
|
|
|
|
void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
|
|
size_t ie_len, u16 reason, bool from_ap)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
int i;
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
union iwreq_data wrqu;
|
|
#endif
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
|
|
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
|
|
return;
|
|
|
|
if (wdev->current_bss) {
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
|
|
}
|
|
|
|
wdev->current_bss = NULL;
|
|
wdev->ssid_len = 0;
|
|
wdev->conn_owner_nlportid = 0;
|
|
kfree_sensitive(wdev->connect_keys);
|
|
wdev->connect_keys = NULL;
|
|
|
|
nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
|
|
|
|
/* stop critical protocol if supported */
|
|
if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) {
|
|
rdev->crit_proto_nlportid = 0;
|
|
rdev_crit_proto_stop(rdev, wdev);
|
|
}
|
|
|
|
/*
|
|
* Delete all the keys ... pairwise keys can't really
|
|
* exist any more anyway, but default keys might.
|
|
*/
|
|
if (rdev->ops->del_key) {
|
|
int max_key_idx = 5;
|
|
|
|
if (wiphy_ext_feature_isset(
|
|
wdev->wiphy,
|
|
NL80211_EXT_FEATURE_BEACON_PROTECTION) ||
|
|
wiphy_ext_feature_isset(
|
|
wdev->wiphy,
|
|
NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
|
|
max_key_idx = 7;
|
|
for (i = 0; i <= max_key_idx; i++)
|
|
rdev_del_key(rdev, dev, i, false, NULL);
|
|
}
|
|
|
|
rdev_set_qos_map(rdev, dev, NULL);
|
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
|
|
wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
|
|
wdev->wext.connect.ssid_len = 0;
|
|
#endif
|
|
|
|
schedule_work(&cfg80211_disconnect_work);
|
|
}
|
|
|
|
void cfg80211_disconnected(struct net_device *dev, u16 reason,
|
|
const u8 *ie, size_t ie_len,
|
|
bool locally_generated, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
struct cfg80211_event *ev;
|
|
unsigned long flags;
|
|
|
|
ev = kzalloc(sizeof(*ev) + ie_len, gfp);
|
|
if (!ev)
|
|
return;
|
|
|
|
ev->type = EVENT_DISCONNECTED;
|
|
ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
|
|
ev->dc.ie_len = ie_len;
|
|
memcpy((void *)ev->dc.ie, ie, ie_len);
|
|
ev->dc.reason = reason;
|
|
ev->dc.locally_generated = locally_generated;
|
|
|
|
spin_lock_irqsave(&wdev->event_lock, flags);
|
|
list_add_tail(&ev->list, &wdev->event_list);
|
|
spin_unlock_irqrestore(&wdev->event_lock, flags);
|
|
queue_work(cfg80211_wq, &rdev->event_work);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_disconnected);
|
|
|
|
/*
|
|
* API calls for nl80211/wext compatibility code
|
|
*/
|
|
int cfg80211_connect(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct cfg80211_connect_params *connect,
|
|
struct cfg80211_cached_keys *connkeys,
|
|
const u8 *prev_bssid)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
int err;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
/*
|
|
* If we have an ssid_len, we're trying to connect or are
|
|
* already connected, so reject a new SSID unless it's the
|
|
* same (which is the case for re-association.)
|
|
*/
|
|
if (wdev->ssid_len &&
|
|
(wdev->ssid_len != connect->ssid_len ||
|
|
memcmp(wdev->ssid, connect->ssid, wdev->ssid_len)))
|
|
return -EALREADY;
|
|
|
|
/*
|
|
* If connected, reject (re-)association unless prev_bssid
|
|
* matches the current BSSID.
|
|
*/
|
|
if (wdev->current_bss) {
|
|
if (!prev_bssid)
|
|
return -EALREADY;
|
|
if (!ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid))
|
|
return -ENOTCONN;
|
|
}
|
|
|
|
/*
|
|
* Reject if we're in the process of connecting with WEP,
|
|
* this case isn't very interesting and trying to handle
|
|
* it would make the code much more complex.
|
|
*/
|
|
if (wdev->connect_keys)
|
|
return -EINPROGRESS;
|
|
|
|
cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
|
|
rdev->wiphy.ht_capa_mod_mask);
|
|
cfg80211_oper_and_vht_capa(&connect->vht_capa_mask,
|
|
rdev->wiphy.vht_capa_mod_mask);
|
|
|
|
if (connkeys && connkeys->def >= 0) {
|
|
int idx;
|
|
u32 cipher;
|
|
|
|
idx = connkeys->def;
|
|
cipher = connkeys->params[idx].cipher;
|
|
/* If given a WEP key we may need it for shared key auth */
|
|
if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
|
|
cipher == WLAN_CIPHER_SUITE_WEP104) {
|
|
connect->key_idx = idx;
|
|
connect->key = connkeys->params[idx].key;
|
|
connect->key_len = connkeys->params[idx].key_len;
|
|
|
|
/*
|
|
* If ciphers are not set (e.g. when going through
|
|
* iwconfig), we have to set them appropriately here.
|
|
*/
|
|
if (connect->crypto.cipher_group == 0)
|
|
connect->crypto.cipher_group = cipher;
|
|
|
|
if (connect->crypto.n_ciphers_pairwise == 0) {
|
|
connect->crypto.n_ciphers_pairwise = 1;
|
|
connect->crypto.ciphers_pairwise[0] = cipher;
|
|
}
|
|
}
|
|
|
|
connect->crypto.wep_keys = connkeys->params;
|
|
connect->crypto.wep_tx_key = connkeys->def;
|
|
} else {
|
|
if (WARN_ON(connkeys))
|
|
return -EINVAL;
|
|
}
|
|
|
|
wdev->connect_keys = connkeys;
|
|
memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
|
|
wdev->ssid_len = connect->ssid_len;
|
|
|
|
wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :
|
|
IEEE80211_BSS_TYPE_ESS;
|
|
|
|
if (!rdev->ops->connect)
|
|
err = cfg80211_sme_connect(wdev, connect, prev_bssid);
|
|
else
|
|
err = rdev_connect(rdev, dev, connect);
|
|
|
|
if (err) {
|
|
wdev->connect_keys = NULL;
|
|
/*
|
|
* This could be reassoc getting refused, don't clear
|
|
* ssid_len in that case.
|
|
*/
|
|
if (!wdev->current_bss)
|
|
wdev->ssid_len = 0;
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, u16 reason, bool wextev)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
int err = 0;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
kfree_sensitive(wdev->connect_keys);
|
|
wdev->connect_keys = NULL;
|
|
|
|
wdev->conn_owner_nlportid = 0;
|
|
|
|
if (wdev->conn)
|
|
err = cfg80211_sme_disconnect(wdev, reason);
|
|
else if (!rdev->ops->disconnect)
|
|
cfg80211_mlme_down(rdev, dev);
|
|
else if (wdev->ssid_len)
|
|
err = rdev_disconnect(rdev, dev, reason);
|
|
|
|
/*
|
|
* Clear ssid_len unless we actually were fully connected,
|
|
* in which case cfg80211_disconnected() will take care of
|
|
* this later.
|
|
*/
|
|
if (!wdev->current_bss)
|
|
wdev->ssid_len = 0;
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Used to clean up after the connection / connection attempt owner socket
|
|
* disconnects
|
|
*/
|
|
void cfg80211_autodisconnect_wk(struct work_struct *work)
|
|
{
|
|
struct wireless_dev *wdev =
|
|
container_of(work, struct wireless_dev, disconnect_wk);
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
|
|
|
wdev_lock(wdev);
|
|
|
|
if (wdev->conn_owner_nlportid) {
|
|
switch (wdev->iftype) {
|
|
case NL80211_IFTYPE_ADHOC:
|
|
__cfg80211_leave_ibss(rdev, wdev->netdev, false);
|
|
break;
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_P2P_GO:
|
|
__cfg80211_stop_ap(rdev, wdev->netdev, false);
|
|
break;
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
__cfg80211_leave_mesh(rdev, wdev->netdev);
|
|
break;
|
|
case NL80211_IFTYPE_STATION:
|
|
case NL80211_IFTYPE_P2P_CLIENT:
|
|
/*
|
|
* Use disconnect_bssid if still connecting and
|
|
* ops->disconnect not implemented. Otherwise we can
|
|
* use cfg80211_disconnect.
|
|
*/
|
|
if (rdev->ops->disconnect || wdev->current_bss)
|
|
cfg80211_disconnect(rdev, wdev->netdev,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
true);
|
|
else
|
|
cfg80211_mlme_deauth(rdev, wdev->netdev,
|
|
wdev->disconnect_bssid,
|
|
NULL, 0,
|
|
WLAN_REASON_DEAUTH_LEAVING,
|
|
false);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
wdev_unlock(wdev);
|
|
}
|