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7e7c8926b2
This allows users to disable features such as HT, HT40, and to modify the MCS, AMPDU, and AMSDU settings for drivers that support it. The MCS, AMPDU, and AMSDU features that may be disabled are are reported in the phy-info netlink message as a mask. Attemping to disable features that are not supported will take no affect, but will not return errors. This is to aid backwards compatibility in user-space apps that may not be clever enough to deal with parsing the the capabilities mask. This patch only enables the infrastructure. An additional patch will enable the feature in mac80211. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
1172 lines
31 KiB
C
1172 lines
31 KiB
C
/*
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* cfg80211 MLME SAP interface
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*
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* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/nl80211.h>
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#include <linux/slab.h>
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#include <linux/wireless.h>
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#include <net/cfg80211.h>
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#include <net/iw_handler.h>
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#include "core.h"
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#include "nl80211.h"
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void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
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u8 *bssid = mgmt->bssid;
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int i;
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u16 status = le16_to_cpu(mgmt->u.auth.status_code);
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bool done = false;
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wdev_lock(wdev);
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for (i = 0; i < MAX_AUTH_BSSES; i++) {
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if (wdev->authtry_bsses[i] &&
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memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid,
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ETH_ALEN) == 0) {
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if (status == WLAN_STATUS_SUCCESS) {
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wdev->auth_bsses[i] = wdev->authtry_bsses[i];
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} else {
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cfg80211_unhold_bss(wdev->authtry_bsses[i]);
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cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
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}
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wdev->authtry_bsses[i] = NULL;
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done = true;
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break;
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}
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}
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if (done) {
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nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
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cfg80211_sme_rx_auth(dev, buf, len);
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}
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wdev_unlock(wdev);
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}
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EXPORT_SYMBOL(cfg80211_send_rx_auth);
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void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
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{
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u16 status_code;
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
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u8 *ie = mgmt->u.assoc_resp.variable;
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int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
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struct cfg80211_internal_bss *bss = NULL;
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wdev_lock(wdev);
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status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
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/*
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* This is a bit of a hack, we don't notify userspace of
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* a (re-)association reply if we tried to send a reassoc
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* and got a reject -- we only try again with an assoc
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* frame instead of reassoc.
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*/
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if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
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cfg80211_sme_failed_reassoc(wdev))
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goto out;
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nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
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if (status_code == WLAN_STATUS_SUCCESS) {
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for (i = 0; i < MAX_AUTH_BSSES; i++) {
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if (!wdev->auth_bsses[i])
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continue;
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if (memcmp(wdev->auth_bsses[i]->pub.bssid, mgmt->bssid,
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ETH_ALEN) == 0) {
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bss = wdev->auth_bsses[i];
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wdev->auth_bsses[i] = NULL;
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/* additional reference to drop hold */
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cfg80211_ref_bss(bss);
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break;
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}
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}
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/*
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* We might be coming here because the driver reported
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* a successful association at the same time as the
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* user requested a deauth. In that case, we will have
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* removed the BSS from the auth_bsses list due to the
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* deauth request when the assoc response makes it. If
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* the two code paths acquire the lock the other way
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* around, that's just the standard situation of a
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* deauth being requested while connected.
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*/
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if (!bss)
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goto out;
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} else if (wdev->conn) {
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cfg80211_sme_failed_assoc(wdev);
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/*
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* do not call connect_result() now because the
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* sme will schedule work that does it later.
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*/
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goto out;
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}
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if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
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/*
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* This is for the userspace SME, the CONNECTING
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* state will be changed to CONNECTED by
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* __cfg80211_connect_result() below.
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*/
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wdev->sme_state = CFG80211_SME_CONNECTING;
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}
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/* this consumes one bss reference (unless bss is NULL) */
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__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
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status_code,
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status_code == WLAN_STATUS_SUCCESS,
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bss ? &bss->pub : NULL);
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/* drop hold now, and also reference acquired above */
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if (bss) {
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cfg80211_unhold_bss(bss);
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cfg80211_put_bss(&bss->pub);
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}
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out:
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wdev_unlock(wdev);
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}
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EXPORT_SYMBOL(cfg80211_send_rx_assoc);
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void __cfg80211_send_deauth(struct net_device *dev,
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const u8 *buf, size_t len)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
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const u8 *bssid = mgmt->bssid;
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int i;
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bool found = false, was_current = false;
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ASSERT_WDEV_LOCK(wdev);
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if (wdev->current_bss &&
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memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
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cfg80211_unhold_bss(wdev->current_bss);
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cfg80211_put_bss(&wdev->current_bss->pub);
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wdev->current_bss = NULL;
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found = true;
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was_current = true;
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} else for (i = 0; i < MAX_AUTH_BSSES; i++) {
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if (wdev->auth_bsses[i] &&
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memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
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cfg80211_unhold_bss(wdev->auth_bsses[i]);
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cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
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wdev->auth_bsses[i] = NULL;
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found = true;
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break;
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}
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if (wdev->authtry_bsses[i] &&
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memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid,
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ETH_ALEN) == 0 &&
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memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) == 0) {
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cfg80211_unhold_bss(wdev->authtry_bsses[i]);
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cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
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wdev->authtry_bsses[i] = NULL;
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found = true;
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break;
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}
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}
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if (!found)
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return;
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nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
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if (wdev->sme_state == CFG80211_SME_CONNECTED && was_current) {
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u16 reason_code;
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bool from_ap;
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reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
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from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
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__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
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} else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
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__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
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WLAN_STATUS_UNSPECIFIED_FAILURE,
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false, NULL);
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}
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}
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EXPORT_SYMBOL(__cfg80211_send_deauth);
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void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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wdev_lock(wdev);
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__cfg80211_send_deauth(dev, buf, len);
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wdev_unlock(wdev);
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}
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EXPORT_SYMBOL(cfg80211_send_deauth);
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void __cfg80211_send_disassoc(struct net_device *dev,
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const u8 *buf, size_t len)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
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const u8 *bssid = mgmt->bssid;
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int i;
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u16 reason_code;
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bool from_ap;
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bool done = false;
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ASSERT_WDEV_LOCK(wdev);
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nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
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if (wdev->sme_state != CFG80211_SME_CONNECTED)
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return;
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if (wdev->current_bss &&
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memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
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for (i = 0; i < MAX_AUTH_BSSES; i++) {
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if (wdev->authtry_bsses[i] || wdev->auth_bsses[i])
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continue;
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wdev->auth_bsses[i] = wdev->current_bss;
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wdev->current_bss = NULL;
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done = true;
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cfg80211_sme_disassoc(dev, i);
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break;
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}
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WARN_ON(!done);
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} else
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WARN_ON(1);
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reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
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from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
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__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
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}
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EXPORT_SYMBOL(__cfg80211_send_disassoc);
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void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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wdev_lock(wdev);
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__cfg80211_send_disassoc(dev, buf, len);
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wdev_unlock(wdev);
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}
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EXPORT_SYMBOL(cfg80211_send_disassoc);
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void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
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size_t len)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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nl80211_send_unprot_deauth(rdev, dev, buf, len, GFP_ATOMIC);
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}
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EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
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void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
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size_t len)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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nl80211_send_unprot_disassoc(rdev, dev, buf, len, GFP_ATOMIC);
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}
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EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
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static void __cfg80211_auth_remove(struct wireless_dev *wdev, const u8 *addr)
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{
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int i;
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bool done = false;
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ASSERT_WDEV_LOCK(wdev);
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for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
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if (wdev->authtry_bsses[i] &&
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memcmp(wdev->authtry_bsses[i]->pub.bssid,
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addr, ETH_ALEN) == 0) {
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cfg80211_unhold_bss(wdev->authtry_bsses[i]);
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cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
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wdev->authtry_bsses[i] = NULL;
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done = true;
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break;
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}
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}
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WARN_ON(!done);
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}
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void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr)
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{
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__cfg80211_auth_remove(dev->ieee80211_ptr, addr);
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}
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EXPORT_SYMBOL(__cfg80211_auth_canceled);
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void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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wdev_lock(wdev);
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nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
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if (wdev->sme_state == CFG80211_SME_CONNECTING)
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__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
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WLAN_STATUS_UNSPECIFIED_FAILURE,
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false, NULL);
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__cfg80211_auth_remove(wdev, addr);
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wdev_unlock(wdev);
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}
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EXPORT_SYMBOL(cfg80211_send_auth_timeout);
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void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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int i;
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bool done = false;
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wdev_lock(wdev);
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nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
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if (wdev->sme_state == CFG80211_SME_CONNECTING)
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__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
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WLAN_STATUS_UNSPECIFIED_FAILURE,
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false, NULL);
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for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
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if (wdev->auth_bsses[i] &&
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memcmp(wdev->auth_bsses[i]->pub.bssid,
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addr, ETH_ALEN) == 0) {
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cfg80211_unhold_bss(wdev->auth_bsses[i]);
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cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
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wdev->auth_bsses[i] = NULL;
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done = true;
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break;
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}
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}
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WARN_ON(!done);
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wdev_unlock(wdev);
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}
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EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
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void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
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enum nl80211_key_type key_type, int key_id,
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const u8 *tsc, gfp_t gfp)
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{
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struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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#ifdef CONFIG_CFG80211_WEXT
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union iwreq_data wrqu;
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char *buf = kmalloc(128, gfp);
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if (buf) {
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sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
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"keyid=%d %scast addr=%pM)", key_id,
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key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
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addr);
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memset(&wrqu, 0, sizeof(wrqu));
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wrqu.data.length = strlen(buf);
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wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
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kfree(buf);
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}
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#endif
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nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
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}
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EXPORT_SYMBOL(cfg80211_michael_mic_failure);
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|
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/* some MLME handling for userspace SME */
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int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
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struct net_device *dev,
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struct ieee80211_channel *chan,
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enum nl80211_auth_type auth_type,
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const u8 *bssid,
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const u8 *ssid, int ssid_len,
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const u8 *ie, int ie_len,
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const u8 *key, int key_len, int key_idx,
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bool local_state_change)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_auth_request req;
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struct cfg80211_internal_bss *bss;
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int i, err, slot = -1, nfree = 0;
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|
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ASSERT_WDEV_LOCK(wdev);
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|
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if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
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if (!key || !key_len || key_idx < 0 || key_idx > 4)
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return -EINVAL;
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|
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if (wdev->current_bss &&
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memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0)
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return -EALREADY;
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|
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for (i = 0; i < MAX_AUTH_BSSES; i++) {
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if (wdev->authtry_bsses[i] &&
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memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid,
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ETH_ALEN) == 0)
|
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return -EALREADY;
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if (wdev->auth_bsses[i] &&
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memcmp(bssid, wdev->auth_bsses[i]->pub.bssid,
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ETH_ALEN) == 0)
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return -EALREADY;
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}
|
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|
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memset(&req, 0, sizeof(req));
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|
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req.local_state_change = local_state_change;
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req.ie = ie;
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req.ie_len = ie_len;
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req.auth_type = auth_type;
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req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
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WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
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req.key = key;
|
|
req.key_len = key_len;
|
|
req.key_idx = key_idx;
|
|
if (!req.bss)
|
|
return -ENOENT;
|
|
|
|
bss = bss_from_pub(req.bss);
|
|
|
|
for (i = 0; i < MAX_AUTH_BSSES; i++) {
|
|
if (!wdev->auth_bsses[i] && !wdev->authtry_bsses[i]) {
|
|
slot = i;
|
|
nfree++;
|
|
}
|
|
}
|
|
|
|
/* we need one free slot for disassoc and one for this auth */
|
|
if (nfree < 2) {
|
|
err = -ENOSPC;
|
|
goto out;
|
|
}
|
|
|
|
if (local_state_change)
|
|
wdev->auth_bsses[slot] = bss;
|
|
else
|
|
wdev->authtry_bsses[slot] = bss;
|
|
cfg80211_hold_bss(bss);
|
|
|
|
err = rdev->ops->auth(&rdev->wiphy, dev, &req);
|
|
if (err) {
|
|
if (local_state_change)
|
|
wdev->auth_bsses[slot] = NULL;
|
|
else
|
|
wdev->authtry_bsses[slot] = NULL;
|
|
cfg80211_unhold_bss(bss);
|
|
}
|
|
|
|
out:
|
|
if (err)
|
|
cfg80211_put_bss(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,
|
|
bool local_state_change)
|
|
{
|
|
int err;
|
|
|
|
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, local_state_change);
|
|
wdev_unlock(dev->ieee80211_ptr);
|
|
|
|
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];
|
|
}
|
|
|
|
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 wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_assoc_request req;
|
|
struct cfg80211_internal_bss *bss;
|
|
int i, err, slot = -1;
|
|
bool was_connected = false;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
|
|
if (wdev->current_bss && prev_bssid &&
|
|
memcmp(wdev->current_bss->pub.bssid, prev_bssid, ETH_ALEN) == 0) {
|
|
/*
|
|
* 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);
|
|
|
|
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;
|
|
}
|
|
|
|
bss = bss_from_pub(req.bss);
|
|
|
|
for (i = 0; i < MAX_AUTH_BSSES; i++) {
|
|
if (bss == wdev->auth_bsses[i]) {
|
|
slot = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (slot < 0) {
|
|
err = -ENOTCONN;
|
|
goto out;
|
|
}
|
|
|
|
err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
|
|
out:
|
|
if (err && was_connected)
|
|
wdev->sme_state = CFG80211_SME_CONNECTED;
|
|
/* still a reference in wdev->auth_bsses[slot] */
|
|
cfg80211_put_bss(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 wireless_dev *wdev = dev->ieee80211_ptr;
|
|
int err;
|
|
|
|
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);
|
|
wdev_unlock(wdev);
|
|
|
|
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;
|
|
int i;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
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 (wdev->current_bss &&
|
|
memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
|
|
req.bss = &wdev->current_bss->pub;
|
|
} else for (i = 0; i < MAX_AUTH_BSSES; i++) {
|
|
if (wdev->auth_bsses[i] &&
|
|
memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
|
|
req.bss = &wdev->auth_bsses[i]->pub;
|
|
break;
|
|
}
|
|
if (wdev->authtry_bsses[i] &&
|
|
memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
|
|
req.bss = &wdev->authtry_bsses[i]->pub;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!req.bss)
|
|
return -ENOTCONN;
|
|
|
|
return rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
|
|
}
|
|
|
|
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_ON(!wdev->current_bss))
|
|
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 (memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0)
|
|
req.bss = &wdev->current_bss->pub;
|
|
else
|
|
return -ENOTCONN;
|
|
|
|
return rdev->ops->disassoc(&rdev->wiphy, dev, &req, wdev);
|
|
}
|
|
|
|
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;
|
|
int i;
|
|
|
|
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) {
|
|
req.bss = &wdev->current_bss->pub;
|
|
rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
|
|
if (wdev->current_bss) {
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(&wdev->current_bss->pub);
|
|
wdev->current_bss = NULL;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < MAX_AUTH_BSSES; i++) {
|
|
if (wdev->auth_bsses[i]) {
|
|
req.bss = &wdev->auth_bsses[i]->pub;
|
|
rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
|
|
if (wdev->auth_bsses[i]) {
|
|
cfg80211_unhold_bss(wdev->auth_bsses[i]);
|
|
cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
|
|
wdev->auth_bsses[i] = NULL;
|
|
}
|
|
}
|
|
if (wdev->authtry_bsses[i]) {
|
|
req.bss = &wdev->authtry_bsses[i]->pub;
|
|
rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
|
|
if (wdev->authtry_bsses[i]) {
|
|
cfg80211_unhold_bss(wdev->authtry_bsses[i]);
|
|
cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
|
|
wdev->authtry_bsses[i] = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie,
|
|
struct ieee80211_channel *chan,
|
|
enum nl80211_channel_type channel_type,
|
|
unsigned int duration, gfp_t gfp)
|
|
{
|
|
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
nl80211_send_remain_on_channel(rdev, dev, cookie, chan, channel_type,
|
|
duration, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_ready_on_channel);
|
|
|
|
void cfg80211_remain_on_channel_expired(struct net_device *dev,
|
|
u64 cookie,
|
|
struct ieee80211_channel *chan,
|
|
enum nl80211_channel_type channel_type,
|
|
gfp_t gfp)
|
|
{
|
|
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
nl80211_send_remain_on_channel_cancel(rdev, dev, cookie, chan,
|
|
channel_type, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
|
|
|
|
void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
|
|
struct station_info *sinfo, gfp_t gfp)
|
|
{
|
|
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
nl80211_send_sta_event(rdev, dev, mac_addr, sinfo, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_new_sta);
|
|
|
|
void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
|
|
{
|
|
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
nl80211_send_sta_del_event(rdev, dev, mac_addr, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_del_sta);
|
|
|
|
struct cfg80211_mgmt_registration {
|
|
struct list_head list;
|
|
|
|
u32 nlpid;
|
|
|
|
int match_len;
|
|
|
|
__le16 frame_type;
|
|
|
|
u8 match[];
|
|
};
|
|
|
|
int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
|
|
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->nlpid = snd_pid;
|
|
nreg->frame_type = cpu_to_le16(frame_type);
|
|
list_add(&nreg->list, &wdev->mgmt_registrations);
|
|
|
|
if (rdev->ops->mgmt_frame_register)
|
|
rdev->ops->mgmt_frame_register(wiphy, wdev->netdev,
|
|
frame_type, true);
|
|
|
|
out:
|
|
spin_unlock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid)
|
|
{
|
|
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->nlpid != nlpid)
|
|
continue;
|
|
|
|
if (rdev->ops->mgmt_frame_register) {
|
|
u16 frame_type = le16_to_cpu(reg->frame_type);
|
|
|
|
rdev->ops->mgmt_frame_register(wiphy, wdev->netdev,
|
|
frame_type, false);
|
|
}
|
|
|
|
list_del(®->list);
|
|
kfree(reg);
|
|
}
|
|
|
|
spin_unlock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
if (nlpid == wdev->ap_unexpected_nlpid)
|
|
wdev->ap_unexpected_nlpid = 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 net_device *dev,
|
|
struct ieee80211_channel *chan, bool offchan,
|
|
enum nl80211_channel_type channel_type,
|
|
bool channel_type_valid, unsigned int wait,
|
|
const u8 *buf, size_t len, bool no_cck,
|
|
bool dont_wait_for_ack, u64 *cookie)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
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 (memcmp(wdev->current_bss->pub.bssid,
|
|
mgmt->bssid, ETH_ALEN)) {
|
|
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 (memcmp(wdev->current_bss->pub.bssid,
|
|
mgmt->da, ETH_ALEN)) {
|
|
err = -ENOTCONN;
|
|
break;
|
|
}
|
|
break;
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_P2P_GO:
|
|
case NL80211_IFTYPE_AP_VLAN:
|
|
if (memcmp(mgmt->bssid, dev->dev_addr, ETH_ALEN))
|
|
err = -EINVAL;
|
|
break;
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
if (memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN)) {
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
/*
|
|
* check for mesh DA must be done by driver as
|
|
* cfg80211 doesn't track the stations
|
|
*/
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
wdev_unlock(wdev);
|
|
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0)
|
|
return -EINVAL;
|
|
|
|
/* Transmit the Action frame as requested by user space */
|
|
return rdev->ops->mgmt_tx(&rdev->wiphy, dev, chan, offchan,
|
|
channel_type, channel_type_valid,
|
|
wait, buf, len, no_cck, dont_wait_for_ack,
|
|
cookie);
|
|
}
|
|
|
|
bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf,
|
|
size_t len, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
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;
|
|
|
|
stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4;
|
|
|
|
if (!(stypes->rx & BIT(stype)))
|
|
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, dev, reg->nlpid, freq,
|
|
buf, len, gfp))
|
|
continue;
|
|
|
|
result = true;
|
|
break;
|
|
}
|
|
|
|
spin_unlock_bh(&wdev->mgmt_registrations_lock);
|
|
|
|
return result;
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_rx_mgmt);
|
|
|
|
void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie,
|
|
const u8 *buf, size_t len, bool ack, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
/* Indicate TX status of the Action frame to user space */
|
|
nl80211_send_mgmt_tx_status(rdev, dev, cookie, buf, len, ack, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
|
|
|
|
void cfg80211_cqm_rssi_notify(struct net_device *dev,
|
|
enum nl80211_cqm_rssi_threshold_event rssi_event,
|
|
gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
/* Indicate roaming trigger event to user space */
|
|
nl80211_send_cqm_rssi_notify(rdev, dev, rssi_event, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
|
|
|
|
void cfg80211_cqm_pktloss_notify(struct net_device *dev,
|
|
const u8 *peer, u32 num_packets, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
/* Indicate roaming trigger event to user space */
|
|
nl80211_send_cqm_pktloss_notify(rdev, dev, peer, num_packets, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
|
|
|
|
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
|
|
const u8 *replay_ctr, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
|
|
|
|
void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
|
|
const u8 *bssid, bool preauth, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
|
|
nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
|
|
|
|
bool cfg80211_rx_spurious_frame(struct net_device *dev,
|
|
const u8 *addr, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
|
|
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
|
|
wdev->iftype != NL80211_IFTYPE_P2P_GO))
|
|
return false;
|
|
|
|
return nl80211_unexpected_frame(dev, addr, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
|
|
|
|
bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
|
|
const u8 *addr, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
|
|
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
|
|
wdev->iftype != NL80211_IFTYPE_P2P_GO &&
|
|
wdev->iftype != NL80211_IFTYPE_AP_VLAN))
|
|
return false;
|
|
|
|
return nl80211_unexpected_4addr_frame(dev, addr, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
|