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Diffstat (limited to 'net/mac80211/tkip.c')
-rw-r--r--net/mac80211/tkip.c44
1 files changed, 26 insertions, 18 deletions
diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index 41621720e56..3abe194e4d5 100644
--- a/net/mac80211/tkip.c
+++ b/net/mac80211/tkip.c
@@ -182,7 +182,7 @@ u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
*pos++ = iv0;
*pos++ = iv1;
*pos++ = iv2;
- *pos++ = (key->keyidx << 6) | (1 << 5) /* Ext IV */;
+ *pos++ = (key->conf.keyidx << 6) | (1 << 5) /* Ext IV */;
*pos++ = key->u.tkip.iv32 & 0xff;
*pos++ = (key->u.tkip.iv32 >> 8) & 0xff;
*pos++ = (key->u.tkip.iv32 >> 16) & 0xff;
@@ -194,7 +194,7 @@ u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
void ieee80211_tkip_gen_phase1key(struct ieee80211_key *key, u8 *ta,
u16 *phase1key)
{
- tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ tkip_mixing_phase1(ta, &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
key->u.tkip.iv32, phase1key);
}
@@ -204,12 +204,13 @@ void ieee80211_tkip_gen_rc4key(struct ieee80211_key *key, u8 *ta,
/* Calculate per-packet key */
if (key->u.tkip.iv16 == 0 || !key->u.tkip.tx_initialized) {
/* IV16 wrapped around - perform TKIP phase 1 */
- tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ tkip_mixing_phase1(ta, &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
key->u.tkip.iv32, key->u.tkip.p1k);
key->u.tkip.tx_initialized = 1;
}
- tkip_mixing_phase2(key->u.tkip.p1k, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ tkip_mixing_phase2(key->u.tkip.p1k,
+ &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
key->u.tkip.iv16, rc4key);
}
@@ -237,7 +238,8 @@ void ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm,
int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
struct ieee80211_key *key,
u8 *payload, size_t payload_len, u8 *ta,
- int only_iv, int queue)
+ int only_iv, int queue,
+ u32 *out_iv32, u16 *out_iv16)
{
u32 iv32;
u32 iv16;
@@ -266,7 +268,7 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
if (!(keyid & (1 << 5)))
return TKIP_DECRYPT_NO_EXT_IV;
- if ((keyid >> 6) != key->keyidx)
+ if ((keyid >> 6) != key->conf.keyidx)
return TKIP_DECRYPT_INVALID_KEYIDX;
if (key->u.tkip.rx_initialized[queue] &&
@@ -274,9 +276,10 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
(iv32 == key->u.tkip.iv32_rx[queue] &&
iv16 <= key->u.tkip.iv16_rx[queue]))) {
#ifdef CONFIG_TKIP_DEBUG
+ DECLARE_MAC_BUF(mac);
printk(KERN_DEBUG "TKIP replay detected for RX frame from "
- MAC_FMT " (RX IV (%04x,%02x) <= prev. IV (%04x,%02x)\n",
- MAC_ARG(ta),
+ "%s (RX IV (%04x,%02x) <= prev. IV (%04x,%02x)\n",
+ print_mac(mac, ta),
iv32, iv16, key->u.tkip.iv32_rx[queue],
key->u.tkip.iv16_rx[queue]);
#endif /* CONFIG_TKIP_DEBUG */
@@ -293,16 +296,18 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
key->u.tkip.iv32_rx[queue] != iv32) {
key->u.tkip.rx_initialized[queue] = 1;
/* IV16 wrapped around - perform TKIP phase 1 */
- tkip_mixing_phase1(ta, &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ tkip_mixing_phase1(ta, &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
iv32, key->u.tkip.p1k_rx[queue]);
#ifdef CONFIG_TKIP_DEBUG
{
int i;
- printk(KERN_DEBUG "TKIP decrypt: Phase1 TA=" MAC_FMT
- " TK=", MAC_ARG(ta));
+ DECLARE_MAC_BUF(mac);
+ printk(KERN_DEBUG "TKIP decrypt: Phase1 TA=%s"
+ " TK=", print_mac(mac, ta));
for (i = 0; i < 16; i++)
printk("%02x ",
- key->key[ALG_TKIP_TEMP_ENCR_KEY + i]);
+ key->conf.key[
+ ALG_TKIP_TEMP_ENCR_KEY + i]);
printk("\n");
printk(KERN_DEBUG "TKIP decrypt: P1K=");
for (i = 0; i < 5; i++)
@@ -313,7 +318,7 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
}
tkip_mixing_phase2(key->u.tkip.p1k_rx[queue],
- &key->key[ALG_TKIP_TEMP_ENCR_KEY],
+ &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
iv16, rc4key);
#ifdef CONFIG_TKIP_DEBUG
{
@@ -328,11 +333,14 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
res = ieee80211_wep_decrypt_data(tfm, rc4key, 16, pos, payload_len - 12);
done:
if (res == TKIP_DECRYPT_OK) {
- /* FIX: these should be updated only after Michael MIC has been
- * verified */
- /* Record previously received IV */
- key->u.tkip.iv32_rx[queue] = iv32;
- key->u.tkip.iv16_rx[queue] = iv16;
+ /*
+ * Record previously received IV, will be copied into the
+ * key information after MIC verification. It is possible
+ * that we don't catch replays of fragments but that's ok
+ * because the Michael MIC verication will then fail.
+ */
+ *out_iv32 = iv32;
+ *out_iv16 = iv16;
}
return res;