mac80211: move TKIP TX IVs to public part of key struct

[linux-2.6-microblaze.git] / net / mac80211 / tkip.c

diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index 0ae2077..b362282 100644 (file)
--- a/net/mac80211/tkip.c
+++ b/net/mac80211/tkip.c
@@ -1,6 +1,7 @@
 /*
  * Copyright 2002-2004, Instant802 Networks, Inc.
  * Copyright 2005, Devicescape Software, Inc.
+ * Copyright (C) 2016 Intel Deutschland GmbH
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -142,15 +143,14 @@ static void tkip_mixing_phase2(const u8 *tk, struct tkip_ctx *ctx,
 /* Add TKIP IV and Ext. IV at @pos. @iv0, @iv1, and @iv2 are the first octets
  * of the IV. Returns pointer to the octet following IVs (i.e., beginning of
  * the packet payload). */
-u8 *ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key)
+u8 *ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key_conf *keyconf, u64 pn)
 {
-       lockdep_assert_held(&key->u.tkip.txlock);
-
-       pos = write_tkip_iv(pos, key->u.tkip.tx.iv16);
-       *pos++ = (key->conf.keyidx << 6) | (1 << 5) /* Ext IV */;
-       put_unaligned_le32(key->u.tkip.tx.iv32, pos);
+       pos = write_tkip_iv(pos, TKIP_PN_TO_IV16(pn));
+       *pos++ = (keyconf->keyidx << 6) | (1 << 5) /* Ext IV */;
+       put_unaligned_le32(TKIP_PN_TO_IV32(pn), pos);
        return pos + 4;
 }
+EXPORT_SYMBOL_GPL(ieee80211_tkip_add_iv);
 
 static void ieee80211_compute_tkip_p1k(struct ieee80211_key *key, u32 iv32)
 {
@@ -250,6 +250,7 @@ int ieee80211_tkip_decrypt_data(struct crypto_cipher *tfm,
        u8 rc4key[16], keyid, *pos = payload;
        int res;
        const u8 *tk = &key->conf.key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY];
+       struct tkip_ctx_rx *rx_ctx = &key->u.tkip.rx[queue];
 
        if (payload_len < 12)
                return -1;
@@ -265,37 +266,36 @@ int ieee80211_tkip_decrypt_data(struct crypto_cipher *tfm,
        if ((keyid >> 6) != key->conf.keyidx)
                return TKIP_DECRYPT_INVALID_KEYIDX;
 
-       if (key->u.tkip.rx[queue].state != TKIP_STATE_NOT_INIT &&
-           (iv32 < key->u.tkip.rx[queue].iv32 ||
-            (iv32 == key->u.tkip.rx[queue].iv32 &&
-             iv16 <= key->u.tkip.rx[queue].iv16)))
+       if (rx_ctx->ctx.state != TKIP_STATE_NOT_INIT &&
+           (iv32 < rx_ctx->iv32 ||
+            (iv32 == rx_ctx->iv32 && iv16 <= rx_ctx->iv16)))
                return TKIP_DECRYPT_REPLAY;
 
        if (only_iv) {
                res = TKIP_DECRYPT_OK;
-               key->u.tkip.rx[queue].state = TKIP_STATE_PHASE1_HW_UPLOADED;
+               rx_ctx->ctx.state = TKIP_STATE_PHASE1_HW_UPLOADED;
                goto done;
        }
 
-       if (key->u.tkip.rx[queue].state == TKIP_STATE_NOT_INIT ||
-           key->u.tkip.rx[queue].iv32 != iv32) {
+       if (rx_ctx->ctx.state == TKIP_STATE_NOT_INIT ||
+           rx_ctx->iv32 != iv32) {
                /* IV16 wrapped around - perform TKIP phase 1 */
-               tkip_mixing_phase1(tk, &key->u.tkip.rx[queue], ta, iv32);
+               tkip_mixing_phase1(tk, &rx_ctx->ctx, ta, iv32);
        }
        if (key->local->ops->update_tkip_key &&
            key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
-           key->u.tkip.rx[queue].state != TKIP_STATE_PHASE1_HW_UPLOADED) {
+           rx_ctx->ctx.state != TKIP_STATE_PHASE1_HW_UPLOADED) {
                struct ieee80211_sub_if_data *sdata = key->sdata;
 
                if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
                        sdata = container_of(key->sdata->bss,
                                        struct ieee80211_sub_if_data, u.ap);
                drv_update_tkip_key(key->local, sdata, &key->conf, key->sta,
-                               iv32, key->u.tkip.rx[queue].p1k);
-               key->u.tkip.rx[queue].state = TKIP_STATE_PHASE1_HW_UPLOADED;
+                               iv32, rx_ctx->ctx.p1k);
+               rx_ctx->ctx.state = TKIP_STATE_PHASE1_HW_UPLOADED;
        }
 
-       tkip_mixing_phase2(tk, &key->u.tkip.rx[queue], iv16, rc4key);
+       tkip_mixing_phase2(tk, &rx_ctx->ctx, iv16, rc4key);
 
        res = ieee80211_wep_decrypt_data(tfm, rc4key, 16, pos, payload_len - 12);
  done: