mac80211: remove the dependency on crypto_blkcipher
The only thing that using crypto_blkcipher with ecb does over just using
arc4 directly is wrapping the encrypt/decrypt function into a for loop,
looping over each individual character.
To be able to do this, it pulls in around 40 kb worth of unnecessary
kernel modules (at least on a MIPS embedded device).
Using arc4 directly not only eliminates those dependencies, it also makes
the code smaller.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index e840c9c..757e4eb 100644
--- a/net/mac80211/tkip.c
+++ b/net/mac80211/tkip.c
@@ -202,7 +202,7 @@
* @payload_len is the length of payload (_not_ including IV/ICV length).
* @ta is the transmitter addresses.
*/
-int ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm,
+int ieee80211_tkip_encrypt_data(struct crypto_cipher *tfm,
struct ieee80211_key *key,
u8 *pos, size_t payload_len, u8 *ta)
{
@@ -223,7 +223,7 @@
* beginning of the buffer containing IEEE 802.11 header payload, i.e.,
* including IV, Ext. IV, real data, Michael MIC, ICV. @payload_len is the
* length of payload, including IV, Ext. IV, MIC, ICV. */
-int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
+int ieee80211_tkip_decrypt_data(struct crypto_cipher *tfm,
struct ieee80211_key *key,
u8 *payload, size_t payload_len, u8 *ta,
u8 *ra, int only_iv, int queue,