nl80211: introduce new key attributes

We will soon want to nest key attributes into
some new attribute for configuring static WEP
keys at connect() and ibss_join() time, so we
need nested attributes for that. However, key
attributes right now are 'global'. This patch
thus introduces new nested attributes for the
key settings and functions for parsing them.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index e496a2daf7e..48e0913c220 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -567,6 +567,9 @@ enum nl80211_commands {
  * @NL80211_ATTR_PREV_BSSID: previous BSSID, to be used by in ASSOCIATE
  *	commands to specify using a reassociate frame
  *
+ * @NL80211_ATTR_KEY: key information in a nested attribute with
+ *	%NL80211_KEY_* sub-attributes
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -692,6 +695,8 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_PREV_BSSID,
 
+	NL80211_ATTR_KEY,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,
@@ -720,6 +725,7 @@ enum nl80211_attrs {
 #define NL80211_ATTR_CIPHER_SUITE_GROUP NL80211_ATTR_CIPHER_SUITE_GROUP
 #define NL80211_ATTR_WPA_VERSIONS NL80211_ATTR_WPA_VERSIONS
 #define NL80211_ATTR_AKM_SUITES NL80211_ATTR_AKM_SUITES
+#define NL80211_ATTR_KEY NL80211_ATTR_KEY
 
 #define NL80211_MAX_SUPP_RATES			32
 #define NL80211_MAX_SUPP_REG_RULES		32
@@ -1320,4 +1326,34 @@ enum nl80211_wpa_versions {
 	NL80211_WPA_VERSION_2 = 1 << 1,
 };
 
+/**
+ * enum nl80211_key_attributes - key attributes
+ * @__NL80211_KEY_INVALID: invalid
+ * @NL80211_KEY_DATA: (temporal) key data; for TKIP this consists of
+ *	16 bytes encryption key followed by 8 bytes each for TX and RX MIC
+ *	keys
+ * @NL80211_KEY_IDX: key ID (u8, 0-3)
+ * @NL80211_KEY_CIPHER: key cipher suite (u32, as defined by IEEE 802.11
+ *	section 7.3.2.25.1, e.g. 0x000FAC04)
+ * @NL80211_KEY_SEQ: transmit key sequence number (IV/PN) for TKIP and
+ *	CCMP keys, each six bytes in little endian
+ * @NL80211_KEY_DEFAULT: flag indicating default key
+ * @NL80211_KEY_DEFAULT_MGMT: flag indicating default management key
+ * @__NL80211_KEY_AFTER_LAST: internal
+ * @NL80211_KEY_MAX: highest key attribute
+ */
+enum nl80211_key_attributes {
+	__NL80211_KEY_INVALID,
+	NL80211_KEY_DATA,
+	NL80211_KEY_IDX,
+	NL80211_KEY_CIPHER,
+	NL80211_KEY_SEQ,
+	NL80211_KEY_DEFAULT,
+	NL80211_KEY_DEFAULT_MGMT,
+
+	/* keep last */
+	__NL80211_KEY_AFTER_LAST,
+	NL80211_KEY_MAX = __NL80211_KEY_AFTER_LAST - 1
+};
+
 #endif /* __LINUX_NL80211_H */