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mac80211: support getting key sequence counters via cfg80211

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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>
This commit is contained in:
Johannes Berg 2007-12-19 02:03:31 +01:00 • committed by David S. Miller
parent e8cbb4cbeb
commit 62da92fb75
2 changed files with 89 additions and 10 deletions
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14
include/net/mac80211.h
View file

@ -647,9 +647,6 @@ struct ieee80211_key_conf {
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 @@ enum ieee80211_erp_change_flags {
*
* @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 @@ struct ieee80211_ops {
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,