diff options
Diffstat (limited to 'net')
-rw-r--r-- | net/mac80211/cfg.c | 5 | ||||
-rw-r--r-- | net/mac80211/main.c | 5 | ||||
-rw-r--r-- | net/mac80211/tkip.c | 8 | ||||
-rw-r--r-- | net/mac80211/tkip.h | 2 | ||||
-rw-r--r-- | net/mac80211/wep.c | 24 | ||||
-rw-r--r-- | net/mac80211/wep.h | 2 | ||||
-rw-r--r-- | net/mac80211/wpa.c | 5 |
7 files changed, 30 insertions, 21 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index e55970bf2ba0..5b8b4460b69f 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -143,6 +143,11 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, return -EINVAL; } + /* reject WEP and TKIP keys if WEP failed to initialize */ + if ((alg == ALG_WEP || alg == ALG_TKIP) && + IS_ERR(sdata->local->wep_tx_tfm)) + return -EINVAL; + key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key, params->seq_len, params->seq); if (!key) diff --git a/net/mac80211/main.c b/net/mac80211/main.c index edf7aff93268..0e95c750ded9 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -637,11 +637,9 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) goto fail_sta_info; result = ieee80211_wep_init(local); - if (result < 0) { + if (result < 0) printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", wiphy_name(local->hw.wiphy), result); - goto fail_wep; - } rtnl_lock(); @@ -694,7 +692,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) fail_rate: rtnl_unlock(); ieee80211_wep_free(local); - fail_wep: sta_info_stop(local); fail_sta_info: destroy_workqueue(local->workqueue); diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c index 7ef491e9d66d..e840c9cd46db 100644 --- a/net/mac80211/tkip.c +++ b/net/mac80211/tkip.c @@ -202,9 +202,9 @@ EXPORT_SYMBOL(ieee80211_get_tkip_key); * @payload_len is the length of payload (_not_ including IV/ICV length). * @ta is the transmitter addresses. */ -void ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm, - struct ieee80211_key *key, - u8 *pos, size_t payload_len, u8 *ta) +int ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm, + struct ieee80211_key *key, + u8 *pos, size_t payload_len, u8 *ta) { u8 rc4key[16]; struct tkip_ctx *ctx = &key->u.tkip.tx; @@ -216,7 +216,7 @@ void ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm, tkip_mixing_phase2(tk, ctx, ctx->iv16, rc4key); - ieee80211_wep_encrypt_data(tfm, rc4key, 16, pos, payload_len); + return ieee80211_wep_encrypt_data(tfm, rc4key, 16, pos, payload_len); } /* Decrypt packet payload with TKIP using @key. @pos is a pointer to the diff --git a/net/mac80211/tkip.h b/net/mac80211/tkip.h index d4714383f5fc..7e83dee976fa 100644 --- a/net/mac80211/tkip.h +++ b/net/mac80211/tkip.h @@ -15,7 +15,7 @@ u8 *ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key, u16 iv16); -void ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm, +int ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm, struct ieee80211_key *key, u8 *pos, size_t payload_len, u8 *ta); enum { diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c index 5f3a4113bda1..6d133b6efce5 100644 --- a/net/mac80211/wep.c +++ b/net/mac80211/wep.c @@ -47,8 +47,10 @@ int ieee80211_wep_init(struct ieee80211_local *local) void ieee80211_wep_free(struct ieee80211_local *local) { - crypto_free_blkcipher(local->wep_tx_tfm); - crypto_free_blkcipher(local->wep_rx_tfm); + if (!IS_ERR(local->wep_tx_tfm)) + crypto_free_blkcipher(local->wep_tx_tfm); + if (!IS_ERR(local->wep_rx_tfm)) + crypto_free_blkcipher(local->wep_rx_tfm); } static inline bool ieee80211_wep_weak_iv(u32 iv, int keylen) @@ -122,19 +124,24 @@ static void ieee80211_wep_remove_iv(struct ieee80211_local *local, /* Perform WEP encryption using given key. data buffer must have tailroom * for 4-byte ICV. data_len must not include this ICV. Note: this function * does _not_ add IV. data = RC4(data | CRC32(data)) */ -void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key, - size_t klen, u8 *data, size_t data_len) +int ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key, + size_t klen, u8 *data, size_t data_len) { struct blkcipher_desc desc = { .tfm = tfm }; struct scatterlist sg; __le32 icv; + if (IS_ERR(tfm)) + return -1; + icv = cpu_to_le32(~crc32_le(~0, data, data_len)); put_unaligned(icv, (__le32 *)(data + data_len)); crypto_blkcipher_setkey(tfm, rc4key, klen); sg_init_one(&sg, data, data_len + WEP_ICV_LEN); crypto_blkcipher_encrypt(&desc, &sg, &sg, sg.length); + + return 0; } @@ -168,10 +175,8 @@ int ieee80211_wep_encrypt(struct ieee80211_local *local, /* Add room for ICV */ skb_put(skb, WEP_ICV_LEN); - ieee80211_wep_encrypt_data(local->wep_tx_tfm, rc4key, keylen + 3, - iv + WEP_IV_LEN, len); - - return 0; + return ieee80211_wep_encrypt_data(local->wep_tx_tfm, rc4key, keylen + 3, + iv + WEP_IV_LEN, len); } @@ -185,6 +190,9 @@ int ieee80211_wep_decrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key, struct scatterlist sg; __le32 crc; + if (IS_ERR(tfm)) + return -1; + crypto_blkcipher_setkey(tfm, rc4key, klen); sg_init_one(&sg, data, data_len + WEP_ICV_LEN); crypto_blkcipher_decrypt(&desc, &sg, &sg, sg.length); diff --git a/net/mac80211/wep.h b/net/mac80211/wep.h index fe29d7e5759f..58654ee33518 100644 --- a/net/mac80211/wep.h +++ b/net/mac80211/wep.h @@ -18,7 +18,7 @@ int ieee80211_wep_init(struct ieee80211_local *local); void ieee80211_wep_free(struct ieee80211_local *local); -void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key, +int ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key, size_t klen, u8 *data, size_t data_len); int ieee80211_wep_encrypt(struct ieee80211_local *local, struct sk_buff *skb, diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c index a14e67707476..8d59d27d887e 100644 --- a/net/mac80211/wpa.c +++ b/net/mac80211/wpa.c @@ -183,9 +183,8 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb) skb_put(skb, TKIP_ICV_LEN); hdr = (struct ieee80211_hdr *) skb->data; - ieee80211_tkip_encrypt_data(tx->local->wep_tx_tfm, - key, pos, len, hdr->addr2); - return 0; + return ieee80211_tkip_encrypt_data(tx->local->wep_tx_tfm, + key, pos, len, hdr->addr2); } |