diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2011-07-13 21:50:34 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-07-15 21:38:32 +0400 |
| commit | 8bca5d815311f53ada13b62f5e590df40fef317e (patch) | |
| tree | 7cd6d9d7804c0aa86e1bf4226c4a8196acc3a5c7 | |
| parent | 66760eac005d569393bac34136bcbb8af55d8a5a (diff) | |
| download | linux-8bca5d815311f53ada13b62f5e590df40fef317e.tar.xz | |
mac80211: allow driver access to TKIP RX P1K
When the driver wants to pre-program the TKIP
RX phase 1 key, it needs to be able to obtain
it for the peer's TA. Add API to allow it to
generate it.
The generation uses a dummy on-stack context
since it doesn't know the RX queue.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | include/net/mac80211.h | 14 | ||||
| -rw-r--r-- | net/mac80211/tkip.c | 11 |
2 files changed, 25 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index ea2c8c36477c..9e91b4f47843 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2613,6 +2613,20 @@ static inline void ieee80211_get_tkip_p1k(struct ieee80211_key_conf *keyconf, } /** + * ieee80211_get_tkip_rx_p1k - get a TKIP phase 1 key for RX + * + * This function returns the TKIP phase 1 key for the given IV32 + * and transmitter address. + * + * @keyconf: the parameter passed with the set key + * @ta: TA that will be used with the key + * @iv32: IV32 to get the P1K for + * @p1k: a buffer to which the key will be written, as 5 u16 values + */ +void ieee80211_get_tkip_rx_p1k(struct ieee80211_key_conf *keyconf, + const u8 *ta, u32 iv32, u16 *p1k); + +/** * ieee80211_get_tkip_p2k - get a TKIP phase 2 key * * This function computes the TKIP RC4 key for the IV values diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c index cc79e697cdb2..f49d00a4c7fd 100644 --- a/net/mac80211/tkip.c +++ b/net/mac80211/tkip.c @@ -185,6 +185,17 @@ void ieee80211_get_tkip_p1k_iv(struct ieee80211_key_conf *keyconf, } EXPORT_SYMBOL(ieee80211_get_tkip_p1k_iv); +void ieee80211_get_tkip_rx_p1k(struct ieee80211_key_conf *keyconf, + const u8 *ta, u32 iv32, u16 *p1k) +{ + const u8 *tk = &keyconf->key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY]; + struct tkip_ctx ctx; + + tkip_mixing_phase1(tk, &ctx, ta, iv32); + memcpy(p1k, ctx.p1k, sizeof(ctx.p1k)); +} +EXPORT_SYMBOL(ieee80211_get_tkip_rx_p1k); + void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf, struct sk_buff *skb, u8 *p2k) { |