sparc64: Add ctr mode support to AES driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/crypto/aes_glue.c b/arch/sparc/crypto/aes_glue.c
index 0b1de0b..f457fc6 100644
--- a/arch/sparc/crypto/aes_glue.c
+++ b/arch/sparc/crypto/aes_glue.c
@@ -39,6 +39,8 @@
unsigned int len, u64 *iv);
void (*cbc_decrypt)(const u64 *key, const u64 *input, u64 *output,
unsigned int len, u64 *iv);
+ void (*ctr_crypt)(const u64 *key, const u64 *input, u64 *output,
+ unsigned int len, u64 *iv);
};
struct crypto_sparc64_aes_ctx {
@@ -108,6 +110,16 @@
u64 *output, unsigned int len,
u64 *iv);
+extern void aes_sparc64_ctr_crypt_128(const u64 *key, const u64 *input,
+ u64 *output, unsigned int len,
+ u64 *iv);
+extern void aes_sparc64_ctr_crypt_192(const u64 *key, const u64 *input,
+ u64 *output, unsigned int len,
+ u64 *iv);
+extern void aes_sparc64_ctr_crypt_256(const u64 *key, const u64 *input,
+ u64 *output, unsigned int len,
+ u64 *iv);
+
struct aes_ops aes128_ops = {
.encrypt = aes_sparc64_encrypt_128,
.decrypt = aes_sparc64_decrypt_128,
@@ -117,6 +129,7 @@
.ecb_decrypt = aes_sparc64_ecb_decrypt_128,
.cbc_encrypt = aes_sparc64_cbc_encrypt_128,
.cbc_decrypt = aes_sparc64_cbc_decrypt_128,
+ .ctr_crypt = aes_sparc64_ctr_crypt_128,
};
struct aes_ops aes192_ops = {
@@ -128,6 +141,7 @@
.ecb_decrypt = aes_sparc64_ecb_decrypt_192,
.cbc_encrypt = aes_sparc64_cbc_encrypt_192,
.cbc_decrypt = aes_sparc64_cbc_decrypt_192,
+ .ctr_crypt = aes_sparc64_ctr_crypt_192,
};
struct aes_ops aes256_ops = {
@@ -139,6 +153,7 @@
.ecb_decrypt = aes_sparc64_ecb_decrypt_256,
.cbc_encrypt = aes_sparc64_cbc_encrypt_256,
.cbc_decrypt = aes_sparc64_cbc_decrypt_256,
+ .ctr_crypt = aes_sparc64_ctr_crypt_256,
};
extern void aes_sparc64_key_expand(const u32 *in_key, u64 *output_key,
@@ -310,6 +325,34 @@
return err;
}
+static int ctr_crypt(struct blkcipher_desc *desc,
+ struct scatterlist *dst, struct scatterlist *src,
+ unsigned int nbytes)
+{
+ struct crypto_sparc64_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+ struct blkcipher_walk walk;
+ int err;
+
+ blkcipher_walk_init(&walk, dst, src, nbytes);
+ err = blkcipher_walk_virt(desc, &walk);
+
+ ctx->ops->load_encrypt_keys(&ctx->key[0]);
+ while ((nbytes = walk.nbytes)) {
+ unsigned int block_len = nbytes & AES_BLOCK_MASK;
+
+ if (likely(block_len)) {
+ ctx->ops->ctr_crypt(&ctx->key[0],
+ (const u64 *)walk.src.virt.addr,
+ (u64 *) walk.dst.virt.addr,
+ block_len, (u64 *) walk.iv);
+ }
+ nbytes &= AES_BLOCK_SIZE - 1;
+ err = blkcipher_walk_done(desc, &walk, nbytes);
+ }
+ fprs_write(0);
+ return err;
+}
+
static struct crypto_alg algs[] = { {
.cra_name = "aes",
.cra_driver_name = "aes-sparc64",
@@ -366,6 +409,25 @@
.decrypt = cbc_decrypt,
},
},
+}, {
+ .cra_name = "ctr(aes)",
+ .cra_driver_name = "ctr-aes-sparc64",
+ .cra_priority = 150,
+ .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
+ .cra_alignmask = 7,
+ .cra_type = &crypto_blkcipher_type,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .blkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = aes_set_key,
+ .encrypt = ctr_crypt,
+ .decrypt = ctr_crypt,
+ },
+ },
} };
static bool __init sparc64_has_aes_opcode(void)