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authorJouni Malinen <j@w1.fi>2009-03-27 21:59:49 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-04-22 16:54:28 -0400
commita3b8b0569fbef725597f05278ec58083321f6e9d (patch)
treecb3beb05c841a9564a3fdd44d540570c7b89c9f6 /include
parent53b46b8444f600cc1744521ea096ea0c5d494dd0 (diff)
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nl80211: Add Michael MIC failure event
Define a new nl80211 event, NL80211_CMD_MICHAEL_MIC_FAILURE, to be used to notify user space about locally detected Michael MIC failures. This matches with the MLME-MICHAELMICFAILURE.indication() primitive. Since we do not actually have TSC in the skb anymore when mac80211_ev_michael_mic_failure() is called, that function is changed to take in the TSC as an optional parameter instead of as a requirement to include the TSC after the hdr field (which we did not really follow). For now, TSC is not included in the events from mac80211, but it could be added at some point. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/nl80211.h28
-rw-r--r--include/net/cfg80211.h16
2 files changed, 44 insertions, 0 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index cbe8ce3bf48..27f230f063b 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -199,6 +199,14 @@
* NL80211_CMD_AUTHENTICATE but for Disassociation frames (similar to
* MLME-DISASSOCIATE.request and MLME-DISASSOCIATE.indication primitives).
*
+ * @NL80211_CMD_MICHAEL_MIC_FAILURE: notification of a locally detected Michael
+ * MIC (part of TKIP) failure; sent on the "mlme" multicast group; the
+ * event includes %NL80211_ATTR_MAC to describe the source MAC address of
+ * the frame with invalid MIC, %NL80211_ATTR_KEY_TYPE to show the key
+ * type, %NL80211_ATTR_KEY_IDX to indicate the key identifier, and
+ * %NL80211_ATTR_KEY_SEQ to indicate the TSC value of the frame; this
+ * event matches with MLME-MICHAELMICFAILURE.indication() primitive
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -260,6 +268,8 @@ enum nl80211_commands {
NL80211_CMD_DEAUTHENTICATE,
NL80211_CMD_DISASSOCIATE,
+ NL80211_CMD_MICHAEL_MIC_FAILURE,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -408,6 +418,9 @@ enum nl80211_commands {
* @NL80211_ATTR_REASON_CODE: ReasonCode for %NL80211_CMD_DEAUTHENTICATE and
* %NL80211_CMD_DISASSOCIATE, u16
*
+ * @NL80211_ATTR_KEY_TYPE: Key Type, see &enum nl80211_key_type, represented as
+ * a u32
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -492,6 +505,8 @@ enum nl80211_attrs {
NL80211_ATTR_AUTH_TYPE,
NL80211_ATTR_REASON_CODE,
+ NL80211_ATTR_KEY_TYPE,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -1062,4 +1077,17 @@ enum nl80211_auth_type {
NL80211_AUTHTYPE_FT,
NL80211_AUTHTYPE_NETWORK_EAP,
};
+
+/**
+ * enum nl80211_key_type - Key Type
+ * @NL80211_KEYTYPE_GROUP: Group (broadcast/multicast) key
+ * @NL80211_KEYTYPE_PAIRWISE: Pairwise (unicast/individual) key
+ * @NL80211_KEYTYPE_PEERKEY: PeerKey (DLS)
+ */
+enum nl80211_key_type {
+ NL80211_KEYTYPE_GROUP,
+ NL80211_KEYTYPE_PAIRWISE,
+ NL80211_KEYTYPE_PEERKEY,
+};
+
#endif /* __LINUX_NL80211_H */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index ec33096fc65..f8bf0c86650 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -957,4 +957,20 @@ void cfg80211_hold_bss(struct cfg80211_bss *bss);
*/
void cfg80211_unhold_bss(struct cfg80211_bss *bss);
+/**
+ * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP)
+ * @dev: network device
+ * @addr: The source MAC address of the frame
+ * @key_type: The key type that the received frame used
+ * @key_id: Key identifier (0..3)
+ * @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
+ *
+ * This function is called whenever the local MAC detects a MIC failure in a
+ * received frame. This matches with MLME-MICHAELMICFAILURE.indication()
+ * primitive.
+ */
+void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
+ enum nl80211_key_type key_type, int key_id,
+ const u8 *tsc);
+
#endif /* __NET_CFG80211_H */