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-rw-r--r--include/linux/nl80211.h10
-rw-r--r--include/net/cfg80211.h26
-rw-r--r--net/mac80211/rx.c22
-rw-r--r--net/wireless/mlme.c22
-rw-r--r--net/wireless/nl80211.c16
-rw-r--r--net/wireless/nl80211.h6
6 files changed, 100 insertions, 2 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 1cee56b..7483a89 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -399,6 +399,13 @@
* @NL80211_CMD_LEAVE_MESH: Leave the mesh network -- no special arguments, the
* network is determined by the network interface.
*
+ * @NL80211_CMD_UNPROT_DEAUTHENTICATE: Unprotected deauthentication frame
+ * notification. This event is used to indicate that an unprotected
+ * deauthentication frame was dropped when MFP is in use.
+ * @NL80211_CMD_UNPROT_DISASSOCIATE: Unprotected disassociation frame
+ * notification. This event is used to indicate that an unprotected
+ * disassociation frame was dropped when MFP is in use.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -508,6 +515,9 @@ enum nl80211_commands {
NL80211_CMD_JOIN_MESH,
NL80211_CMD_LEAVE_MESH,
+ NL80211_CMD_UNPROT_DEAUTHENTICATE,
+ NL80211_CMD_UNPROT_DISASSOCIATE,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index f45e15f..3d1c09b 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2360,6 +2360,32 @@ void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf,
size_t len);
/**
+ * cfg80211_send_unprot_deauth - notification of unprotected deauthentication
+ * @dev: network device
+ * @buf: deauthentication frame (header + body)
+ * @len: length of the frame data
+ *
+ * This function is called whenever a received Deauthentication frame has been
+ * dropped in station mode because of MFP being used but the Deauthentication
+ * frame was not protected. This function may sleep.
+ */
+void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
+ size_t len);
+
+/**
+ * cfg80211_send_unprot_disassoc - notification of unprotected disassociation
+ * @dev: network device
+ * @buf: disassociation frame (header + body)
+ * @len: length of the frame data
+ *
+ * This function is called whenever a received Disassociation frame has been
+ * dropped in station mode because of MFP being used but the Disassociation
+ * frame was not protected. This function may sleep.
+ */
+void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
+ size_t len);
+
+/**
* cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP)
* @dev: network device
* @addr: The source MAC address of the frame
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 052789e..4573ce1 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1540,12 +1540,30 @@ ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
if (rx->sta && test_sta_flags(rx->sta, WLAN_STA_MFP)) {
if (unlikely(!ieee80211_has_protected(fc) &&
ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&
- rx->key))
+ rx->key)) {
+ if (ieee80211_is_deauth(fc))
+ cfg80211_send_unprot_deauth(rx->sdata->dev,
+ rx->skb->data,
+ rx->skb->len);
+ else if (ieee80211_is_disassoc(fc))
+ cfg80211_send_unprot_disassoc(rx->sdata->dev,
+ rx->skb->data,
+ rx->skb->len);
return -EACCES;
+ }
/* BIP does not use Protected field, so need to check MMIE */
if (unlikely(ieee80211_is_multicast_robust_mgmt_frame(rx->skb) &&
- ieee80211_get_mmie_keyidx(rx->skb) < 0))
+ ieee80211_get_mmie_keyidx(rx->skb) < 0)) {
+ if (ieee80211_is_deauth(fc))
+ cfg80211_send_unprot_deauth(rx->sdata->dev,
+ rx->skb->data,
+ rx->skb->len);
+ else if (ieee80211_is_disassoc(fc))
+ cfg80211_send_unprot_disassoc(rx->sdata->dev,
+ rx->skb->data,
+ rx->skb->len);
return -EACCES;
+ }
/*
* When using MFP, Action frames are not allowed prior to
* having configured keys.
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index d7680f2..aa5df88 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -263,6 +263,28 @@ void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
}
EXPORT_SYMBOL(cfg80211_send_disassoc);
+void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
+ size_t len)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ nl80211_send_unprot_deauth(rdev, dev, buf, len, GFP_ATOMIC);
+}
+EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
+
+void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
+ size_t len)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ nl80211_send_unprot_disassoc(rdev, dev, buf, len, GFP_ATOMIC);
+}
+EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
+
static void __cfg80211_auth_remove(struct wireless_dev *wdev, const u8 *addr)
{
int i;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 594a6ac..aefce54 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5473,6 +5473,22 @@ void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
NL80211_CMD_DISASSOCIATE, gfp);
}
+void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev, const u8 *buf,
+ size_t len, gfp_t gfp)
+{
+ nl80211_send_mlme_event(rdev, netdev, buf, len,
+ NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
+}
+
+void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev, const u8 *buf,
+ size_t len, gfp_t gfp)
+{
+ nl80211_send_mlme_event(rdev, netdev, buf, len,
+ NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
+}
+
static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, int cmd,
const u8 *addr, gfp_t gfp)
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 16c2f71..e3f7fa8 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -25,6 +25,12 @@ void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len, gfp_t gfp);
+void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev,
+ const u8 *buf, size_t len, gfp_t gfp);
+void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev,
+ const u8 *buf, size_t len, gfp_t gfp);
void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *addr, gfp_t gfp);
generated by cgit v1.1 at 2024-07-07 12:28:48 +0000