1 files changed, 11 insertions, 0 deletions

diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index cc79e697cdb..f49d00a4c7f 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)
 {