cfg80211/nl80211: introduce key handling

This introduces key handling to cfg80211/nl80211. Default
and group keys can be added, changed and removed; sequence
counters for each key can be retrieved.

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

1 files changed, 34 insertions, 0 deletions

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 538ee1dd3d0a..8dc807d9c29a 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -37,6 +37,16 @@
  *      userspace to request deletion of a virtual interface, then requires
  *      attribute %NL80211_ATTR_IFINDEX.
  *
+ * @NL80211_CMD_GET_KEY: Get sequence counter information for a key specified
+ *      by %NL80211_ATTR_KEY_IDX and/or %NL80211_ATTR_MAC.
+ * @NL80211_CMD_SET_KEY: Set key attributes %NL80211_ATTR_KEY_DEFAULT or
+ *      %NL80211_ATTR_KEY_THRESHOLD.
+ * @NL80211_CMD_NEW_KEY: add a key with given %NL80211_ATTR_KEY_DATA,
+ *      %NL80211_ATTR_KEY_IDX, %NL80211_ATTR_MAC and %NL80211_ATTR_KEY_CIPHER
+ *      attributes.
+ * @NL80211_CMD_DEL_KEY: delete a key identified by %NL80211_ATTR_KEY_IDX
+ *      or %NL80211_ATTR_MAC.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -54,6 +64,11 @@ enum nl80211_commands {
         NL80211_CMD_NEW_INTERFACE,
         NL80211_CMD_DEL_INTERFACE,
 
+        NL80211_CMD_GET_KEY,
+        NL80211_CMD_SET_KEY,
+        NL80211_CMD_NEW_KEY,
+        NL80211_CMD_DEL_KEY,
+
         /* add commands here */
 
         /* used to define NL80211_CMD_MAX below */
@@ -75,6 +90,17 @@ enum nl80211_commands {
  * @NL80211_ATTR_IFNAME: network interface name
  * @NL80211_ATTR_IFTYPE: type of virtual interface, see &enum nl80211_iftype
  *
+ * @NL80211_ATTR_MAC: MAC address (various uses)
+ *
+ * @NL80211_ATTR_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_ATTR_KEY_IDX: key ID (u8, 0-3)
+ * @NL80211_ATTR_KEY_CIPHER: key cipher suite (u32, as defined by IEEE 802.11
+ *      section 7.3.2.25.1, e.g. 0x000FAC04)
+ * @NL80211_ATTR_KEY_SEQ: transmit key sequence number (IV/PN) for TKIP and
+ *      CCMP keys, each six bytes in little endian
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -89,6 +115,14 @@ enum nl80211_attrs {
         NL80211_ATTR_IFNAME,
         NL80211_ATTR_IFTYPE,
 
+        NL80211_ATTR_MAC,
+
+        NL80211_ATTR_KEY_DATA,
+        NL80211_ATTR_KEY_IDX,
+        NL80211_ATTR_KEY_CIPHER,
+        NL80211_ATTR_KEY_SEQ,
+        NL80211_ATTR_KEY_DEFAULT,
+
         /* add attributes here, update the policy in nl80211.c */
 
         __NL80211_ATTR_AFTER_LAST,