diff options
| author | Harvey Harrison <harvey.harrison@gmail.com> | 2008-07-02 16:30:52 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-07-08 14:16:02 -0400 |
| commit | feccb466944cb1aeaabc701cfde6771f3be74919 (patch) | |
| tree | 62da55862059f4adb4858376b4698f1d81afbec4 /net/mac80211/aes_ccm.c | |
| parent | c34498b9e633baa3266af98106502633b6bc371b (diff) | |
| download | linux-rt-feccb466944cb1aeaabc701cfde6771f3be74919.tar.gz | |
mac80211: pass scratch buffer directly, remove additional pointers
Recalculate the offset pointers in the ccmp calculations rather than
in the callers.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/aes_ccm.c')
| -rw-r--r-- | net/mac80211/aes_ccm.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c index 4d4c2dfcf9a0..e756ed931164 100644 --- a/net/mac80211/aes_ccm.c +++ b/net/mac80211/aes_ccm.c @@ -53,15 +53,17 @@ static inline void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *b_0, u8 *aad, void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch, - u8 *b_0, u8 *aad, u8 *data, size_t data_len, + u8 *data, size_t data_len, u8 *cdata, u8 *mic) { int i, j, last_len, num_blocks; - u8 *pos, *cpos, *b, *s_0, *e; + u8 *pos, *cpos, *b, *s_0, *e, *b_0, *aad; b = scratch; s_0 = scratch + AES_BLOCK_LEN; e = scratch + 2 * AES_BLOCK_LEN; + b_0 = scratch + 3 * AES_BLOCK_LEN; + aad = scratch + 4 * AES_BLOCK_LEN; num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN); last_len = data_len % AES_BLOCK_LEN; @@ -92,15 +94,16 @@ void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch, int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch, - u8 *b_0, u8 *aad, u8 *cdata, size_t data_len, - u8 *mic, u8 *data) + u8 *cdata, size_t data_len, u8 *mic, u8 *data) { int i, j, last_len, num_blocks; - u8 *pos, *cpos, *b, *s_0, *a; + u8 *pos, *cpos, *b, *s_0, *a, *b_0, *aad; b = scratch; s_0 = scratch + AES_BLOCK_LEN; a = scratch + 2 * AES_BLOCK_LEN; + b_0 = scratch + 3 * AES_BLOCK_LEN; + aad = scratch + 4 * AES_BLOCK_LEN; num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN); last_len = data_len % AES_BLOCK_LEN; |