mac80211: simplify buffers in aes_128_cmac_vector

There's no need to use a single scratch buffer and
calculate offsets into it, just use two separate
buffers for the separate variables.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/aes_cmac.c b/net/mac80211/aes_cmac.c
index 8dfd70d..a04752e 100644 (file)
--- a/net/mac80211/aes_cmac.c
+++ b/net/mac80211/aes_cmac.c
@@ -38,14 +38,10 @@ static void gf_mulx(u8 *pad)
 static void aes_128_cmac_vector(struct crypto_cipher *tfm, size_t num_elem,
                                const u8 *addr[], const size_t *len, u8 *mac)
 {
-       u8 scratch[2 * AES_BLOCK_SIZE];
-       u8 *cbc, *pad;
+       u8 cbc[AES_BLOCK_SIZE], pad[AES_BLOCK_SIZE];
        const u8 *pos, *end;
        size_t i, e, left, total_len;
 
-       cbc = scratch;
-       pad = scratch + AES_BLOCK_SIZE;
-
        memset(cbc, 0, AES_BLOCK_SIZE);
 
        total_len = 0;