mac80211: use AES_BLOCK_SIZE

mac80211 has a defnition of AES_BLOCK_SIZE and
multiple definitions of AES_BLOCK_LEN. Remove
them all and use crypto/aes.h.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

5 files changed, 25 insertions, 29 deletions

diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c
index b9b595c08112..0785e95c9924 100644
--- a/net/mac80211/aes_ccm.c
+++ b/net/mac80211/aes_ccm.c
@@ -11,6 +11,7 @@
 #include <linux/types.h>
 #include <linux/crypto.h>
 #include <linux/err.h>
+#include <crypto/aes.h>
 
 #include <net/mac80211.h>
 #include "key.h"
@@ -21,21 +22,21 @@ static void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *scratch, u8 *a)
         int i;
         u8 *b_0, *aad, *b, *s_0;
 
-        b_0 = scratch + 3 * AES_BLOCK_LEN;
-        aad = scratch + 4 * AES_BLOCK_LEN;
+        b_0 = scratch + 3 * AES_BLOCK_SIZE;
+        aad = scratch + 4 * AES_BLOCK_SIZE;
         b = scratch;
-        s_0 = scratch + AES_BLOCK_LEN;
+        s_0 = scratch + AES_BLOCK_SIZE;
 
         crypto_cipher_encrypt_one(tfm, b, b_0);
 
         /* Extra Authenticate-only data (always two AES blocks) */
-        for (i = 0; i < AES_BLOCK_LEN; i++)
+        for (i = 0; i < AES_BLOCK_SIZE; i++)
                 aad[i] ^= b[i];
         crypto_cipher_encrypt_one(tfm, b, aad);
 
-        aad += AES_BLOCK_LEN;
+        aad += AES_BLOCK_SIZE;
 
-        for (i = 0; i < AES_BLOCK_LEN; i++)
+        for (i = 0; i < AES_BLOCK_SIZE; i++)
                 aad[i] ^= b[i];
         crypto_cipher_encrypt_one(tfm, a, aad);
 
@@ -57,12 +58,12 @@ void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
         u8 *pos, *cpos, *b, *s_0, *e, *b_0;
 
         b = scratch;
-        s_0 = scratch + AES_BLOCK_LEN;
-        e = scratch + 2 * AES_BLOCK_LEN;
-        b_0 = scratch + 3 * AES_BLOCK_LEN;
+        s_0 = scratch + AES_BLOCK_SIZE;
+        e = scratch + 2 * AES_BLOCK_SIZE;
+        b_0 = scratch + 3 * AES_BLOCK_SIZE;
 
-        num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
-        last_len = data_len % AES_BLOCK_LEN;
+        num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
+        last_len = data_len % AES_BLOCK_SIZE;
         aes_ccm_prepare(tfm, scratch, b);
 
         /* Process payload blocks */
@@ -70,7 +71,7 @@ void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
         cpos = cdata;
         for (j = 1; j <= num_blocks; j++) {
                 int blen = (j == num_blocks && last_len) ?
-                        last_len : AES_BLOCK_LEN;
+                        last_len : AES_BLOCK_SIZE;
 
                 /* Authentication followed by encryption */
                 for (i = 0; i < blen; i++)
@@ -96,12 +97,12 @@ int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
         u8 *pos, *cpos, *b, *s_0, *a, *b_0;
 
         b = scratch;
-        s_0 = scratch + AES_BLOCK_LEN;
-        a = scratch + 2 * AES_BLOCK_LEN;
-        b_0 = scratch + 3 * AES_BLOCK_LEN;
+        s_0 = scratch + AES_BLOCK_SIZE;
+        a = scratch + 2 * AES_BLOCK_SIZE;
+        b_0 = scratch + 3 * AES_BLOCK_SIZE;
 
-        num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
-        last_len = data_len % AES_BLOCK_LEN;
+        num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
+        last_len = data_len % AES_BLOCK_SIZE;
         aes_ccm_prepare(tfm, scratch, a);
 
         /* Process payload blocks */
@@ -109,7 +110,7 @@ int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
         pos = data;
         for (j = 1; j <= num_blocks; j++) {
                 int blen = (j == num_blocks && last_len) ?
-                        last_len : AES_BLOCK_LEN;
+                        last_len : AES_BLOCK_SIZE;
 
                 /* Decryption followed by authentication */
                 b_0[14] = (j >> 8) & 0xff;
diff --git a/net/mac80211/aes_ccm.h b/net/mac80211/aes_ccm.h
index 6e7820ef3448..5b7d744e2370 100644
--- a/net/mac80211/aes_ccm.h
+++ b/net/mac80211/aes_ccm.h
@@ -12,8 +12,6 @@
 
 #include <linux/crypto.h>
 
-#define AES_BLOCK_LEN 16
-
 struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[]);
 void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
                                u8 *data, size_t data_len,
diff --git a/net/mac80211/aes_cmac.c b/net/mac80211/aes_cmac.c
index 08b0f1768aad..8dfd70d8fcfb 100644
--- a/net/mac80211/aes_cmac.c
+++ b/net/mac80211/aes_cmac.c
@@ -11,12 +11,12 @@
 #include <linux/types.h>
 #include <linux/crypto.h>
 #include <linux/err.h>
+#include <crypto/aes.h>
 
 #include <net/mac80211.h>
 #include "key.h"
 #include "aes_cmac.h"
 
-#define AES_BLOCK_SIZE 16
 #define AES_CMAC_KEY_LEN 16
 #define CMAC_TLEN 8 /* CMAC TLen = 64 bits (8 octets) */
 #define AAD_LEN 20
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
index fcb52eb2f92f..05abab05b0aa 100644
--- a/net/mac80211/key.h
+++ b/net/mac80211/key.h
@@ -92,9 +92,6 @@ struct ieee80211_key {
                         u8 rx_pn[NUM_RX_DATA_QUEUES + 1][6];
                         struct crypto_cipher *tfm;
                         u32 replays; /* dot11RSNAStatsCCMPReplays */
-#ifndef AES_BLOCK_LEN
-#define AES_BLOCK_LEN 16
-#endif
                 } ccmp;
                 struct {
                         atomic64_t tx_pn;
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 3452d5e0a3cb..01684234b704 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -291,10 +291,10 @@ static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
         unsigned int hdrlen;
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 
-        memset(scratch, 0, 6 * AES_BLOCK_LEN);
+        memset(scratch, 0, 6 * AES_BLOCK_SIZE);
 
-        b_0 = scratch + 3 * AES_BLOCK_LEN;
-        aad = scratch + 4 * AES_BLOCK_LEN;
+        b_0 = scratch + 3 * AES_BLOCK_SIZE;
+        aad = scratch + 4 * AES_BLOCK_SIZE;
 
         /*
          * Mask FC: zero subtype b4 b5 b6 (if not mgmt)
@@ -386,7 +386,7 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
         u8 *pos;
         u8 pn[6];
         u64 pn64;
-        u8 scratch[6 * AES_BLOCK_LEN];
+        u8 scratch[6 * AES_BLOCK_SIZE];
 
         if (info->control.hw_key &&
             !(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
@@ -487,7 +487,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
         }
 
         if (!(status->flag & RX_FLAG_DECRYPTED)) {
-                u8 scratch[6 * AES_BLOCK_LEN];
+                u8 scratch[6 * AES_BLOCK_SIZE];
                 /* hardware didn't decrypt/verify MIC */
                 ccmp_special_blocks(skb, pn, scratch, 1);