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e4e32459c2
devlist_mtx locking is changed to accomodate changes. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
1000 lines
26 KiB
C
1000 lines
26 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/etherdevice.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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wdev_lock(wdev);
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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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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, struct cfg80211_bss *bss,
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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 ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
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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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cfg80211_put_bss(bss);
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goto out;
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}
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nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
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if (status_code != WLAN_STATUS_SUCCESS && 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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cfg80211_put_bss(bss);
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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 the bss reference */
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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, bss);
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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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bool was_current = false;
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ASSERT_WDEV_LOCK(wdev);
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if (wdev->current_bss &&
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ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
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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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was_current = true;
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}
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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 = !ether_addr_equal(mgmt->sa, dev->dev_addr);
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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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u16 reason_code;
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bool from_ap;
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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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ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
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cfg80211_sme_disassoc(dev, wdev->current_bss);
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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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} 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 = !ether_addr_equal(mgmt->sa, dev->dev_addr);
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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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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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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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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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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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/* 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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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_auth_request req;
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int err;
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ASSERT_WDEV_LOCK(wdev);
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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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if (wdev->current_bss &&
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ether_addr_equal(bssid, wdev->current_bss->pub.bssid))
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return -EALREADY;
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memset(&req, 0, sizeof(req));
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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;
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req.key_len = key_len;
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req.key_idx = key_idx;
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if (!req.bss)
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return -ENOENT;
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err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel,
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CHAN_MODE_SHARED);
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if (err)
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goto out;
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err = rdev->ops->auth(&rdev->wiphy, dev, &req);
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out:
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cfg80211_put_bss(req.bss);
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return err;
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}
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int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
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struct net_device *dev, struct ieee80211_channel *chan,
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enum nl80211_auth_type auth_type, 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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{
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int err;
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mutex_lock(&rdev->devlist_mtx);
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wdev_lock(dev->ieee80211_ptr);
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err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
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ssid, ssid_len, ie, ie_len,
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key, key_len, key_idx);
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wdev_unlock(dev->ieee80211_ptr);
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mutex_unlock(&rdev->devlist_mtx);
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return err;
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}
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/* Do a logical ht_capa &= ht_capa_mask. */
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void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
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const struct ieee80211_ht_cap *ht_capa_mask)
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{
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int i;
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u8 *p1, *p2;
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if (!ht_capa_mask) {
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memset(ht_capa, 0, sizeof(*ht_capa));
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return;
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}
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p1 = (u8*)(ht_capa);
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p2 = (u8*)(ht_capa_mask);
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for (i = 0; i<sizeof(*ht_capa); i++)
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p1[i] &= p2[i];
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}
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int __cfg80211_mlme_assoc(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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const u8 *bssid, const u8 *prev_bssid,
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const u8 *ssid, int ssid_len,
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const u8 *ie, int ie_len, bool use_mfp,
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struct cfg80211_crypto_settings *crypt,
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u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
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struct ieee80211_ht_cap *ht_capa_mask)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_assoc_request req;
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int err;
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bool was_connected = false;
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ASSERT_WDEV_LOCK(wdev);
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memset(&req, 0, sizeof(req));
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if (wdev->current_bss && prev_bssid &&
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ether_addr_equal(wdev->current_bss->pub.bssid, prev_bssid)) {
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/*
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* Trying to reassociate: Allow this to proceed and let the old
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* association to be dropped when the new one is completed.
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*/
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if (wdev->sme_state == CFG80211_SME_CONNECTED) {
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was_connected = true;
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wdev->sme_state = CFG80211_SME_CONNECTING;
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}
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} else if (wdev->current_bss)
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return -EALREADY;
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req.ie = ie;
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req.ie_len = ie_len;
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memcpy(&req.crypto, crypt, sizeof(req.crypto));
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req.use_mfp = use_mfp;
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req.prev_bssid = prev_bssid;
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req.flags = assoc_flags;
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if (ht_capa)
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memcpy(&req.ht_capa, ht_capa, sizeof(req.ht_capa));
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if (ht_capa_mask)
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memcpy(&req.ht_capa_mask, ht_capa_mask,
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sizeof(req.ht_capa_mask));
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cfg80211_oper_and_ht_capa(&req.ht_capa_mask,
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rdev->wiphy.ht_capa_mod_mask);
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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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if (!req.bss) {
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if (was_connected)
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wdev->sme_state = CFG80211_SME_CONNECTED;
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return -ENOENT;
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}
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err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel,
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CHAN_MODE_SHARED);
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if (err)
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goto out;
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err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
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out:
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if (err) {
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if (was_connected)
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wdev->sme_state = CFG80211_SME_CONNECTED;
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cfg80211_put_bss(req.bss);
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}
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return err;
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}
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int cfg80211_mlme_assoc(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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const u8 *bssid, const u8 *prev_bssid,
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const u8 *ssid, int ssid_len,
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const u8 *ie, int ie_len, bool use_mfp,
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struct cfg80211_crypto_settings *crypt,
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u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
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struct ieee80211_ht_cap *ht_capa_mask)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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int err;
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mutex_lock(&rdev->devlist_mtx);
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wdev_lock(wdev);
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err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
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ssid, ssid_len, ie, ie_len, use_mfp, crypt,
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assoc_flags, ht_capa, ht_capa_mask);
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wdev_unlock(wdev);
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mutex_unlock(&rdev->devlist_mtx);
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return err;
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}
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int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
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struct net_device *dev, const u8 *bssid,
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const u8 *ie, int ie_len, u16 reason,
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bool local_state_change)
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{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_deauth_request req = {
|
|
.bssid = bssid,
|
|
.reason_code = reason,
|
|
.ie = ie,
|
|
.ie_len = ie_len,
|
|
};
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (local_state_change) {
|
|
if (wdev->current_bss &&
|
|
ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(&wdev->current_bss->pub);
|
|
wdev->current_bss = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
return rdev->ops->deauth(&rdev->wiphy, dev, &req);
|
|
}
|
|
|
|
int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, const u8 *bssid,
|
|
const u8 *ie, int ie_len, u16 reason,
|
|
bool local_state_change)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
int err;
|
|
|
|
wdev_lock(wdev);
|
|
err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason,
|
|
local_state_change);
|
|
wdev_unlock(wdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, const u8 *bssid,
|
|
const u8 *ie, int ie_len, u16 reason,
|
|
bool local_state_change)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_disassoc_request req;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (wdev->sme_state != CFG80211_SME_CONNECTED)
|
|
return -ENOTCONN;
|
|
|
|
if (WARN_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 (ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
|
|
req.bss = &wdev->current_bss->pub;
|
|
else
|
|
return -ENOTCONN;
|
|
|
|
return rdev->ops->disassoc(&rdev->wiphy, dev, &req);
|
|
}
|
|
|
|
int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev, const u8 *bssid,
|
|
const u8 *ie, int ie_len, u16 reason,
|
|
bool local_state_change)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
int err;
|
|
|
|
wdev_lock(wdev);
|
|
err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason,
|
|
local_state_change);
|
|
wdev_unlock(wdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_deauth_request req;
|
|
u8 bssid[ETH_ALEN];
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (!rdev->ops->deauth)
|
|
return;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
req.reason_code = WLAN_REASON_DEAUTH_LEAVING;
|
|
req.ie = NULL;
|
|
req.ie_len = 0;
|
|
|
|
if (!wdev->current_bss)
|
|
return;
|
|
|
|
memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
|
|
req.bssid = bssid;
|
|
rdev->ops->deauth(&rdev->wiphy, dev, &req);
|
|
|
|
if (wdev->current_bss) {
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
cfg80211_put_bss(&wdev->current_bss->pub);
|
|
wdev->current_bss = 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 (!ether_addr_equal(wdev->current_bss->pub.bssid,
|
|
mgmt->bssid)) {
|
|
err = -ENOTCONN;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* check for IBSS DA must be done by driver as
|
|
* cfg80211 doesn't track the stations
|
|
*/
|
|
if (wdev->iftype == NL80211_IFTYPE_ADHOC)
|
|
break;
|
|
|
|
/* for station, check that DA is the AP */
|
|
if (!ether_addr_equal(wdev->current_bss->pub.bssid,
|
|
mgmt->da)) {
|
|
err = -ENOTCONN;
|
|
break;
|
|
}
|
|
break;
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_P2P_GO:
|
|
case NL80211_IFTYPE_AP_VLAN:
|
|
if (!ether_addr_equal(mgmt->bssid, dev->dev_addr))
|
|
err = -EINVAL;
|
|
break;
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) {
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
/*
|
|
* check for mesh DA must be done by driver as
|
|
* cfg80211 doesn't track the stations
|
|
*/
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
wdev_unlock(wdev);
|
|
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (!ether_addr_equal(mgmt->sa, dev->dev_addr))
|
|
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, int sig_mbm,
|
|
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, sig_mbm,
|
|
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);
|
|
|
|
void cfg80211_ch_switch_notify(struct net_device *dev, int freq,
|
|
enum nl80211_channel_type type)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct wiphy *wiphy = wdev->wiphy;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
|
|
struct ieee80211_channel *chan;
|
|
|
|
wdev_lock(wdev);
|
|
|
|
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
|
|
wdev->iftype != NL80211_IFTYPE_P2P_GO))
|
|
goto out;
|
|
|
|
chan = rdev_freq_to_chan(rdev, freq, type);
|
|
if (WARN_ON(!chan))
|
|
goto out;
|
|
|
|
wdev->channel = chan;
|
|
nl80211_ch_switch_notify(rdev, dev, freq, type, GFP_KERNEL);
|
|
out:
|
|
wdev_unlock(wdev);
|
|
return;
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_ch_switch_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);
|