mac80211: support getting key sequence counters via cfg80211
This implements cfg80211's get_key() to allow retrieving the sequence
counter for a TKIP or CCMP key from userspace. It also cleans up and
documents the associated low-level driver interface.
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>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 5b9e7a2..a762a75 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -647,9 +647,6 @@
u8 key[0];
};
-#define IEEE80211_SEQ_COUNTER_RX 0
-#define IEEE80211_SEQ_COUNTER_TX 1
-
/**
* enum set_key_cmd - key command
*
@@ -996,9 +993,9 @@
*
* @get_stats: return low-level statistics
*
- * @get_sequence_counter: For devices that have internal sequence counters this
- * callback allows mac80211 to access the current value of a counter.
- * This callback seems not well-defined, tell us if you need it.
+ * @get_tkip_seq: If your device implements TKIP encryption in hardware this
+ * callback should be provided to read the TKIP transmit IVs (both IV32
+ * and IV16) for the given key from hardware.
*
* @set_rts_threshold: Configuration of RTS threshold (if device needs it)
*
@@ -1073,9 +1070,8 @@
int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
int (*get_stats)(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats);
- int (*get_sequence_counter)(struct ieee80211_hw *hw,
- u8* addr, u8 keyidx, u8 txrx,
- u32* iv32, u16* iv16);
+ void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
+ u32 *iv32, u16 *iv16);
int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value);
int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value);
int (*set_retry_limit)(struct ieee80211_hw *hw,