On 12.10.19 22:18, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> Convert the glue code for the S390 CPACF implementations of DES-ECB,
> DES-CBC, DES-CTR, 3DES-ECB, 3DES-CBC, and 3DES-CTR from the deprecated
> "blkcipher" API to the "skcipher" API. This is needed in order for the
> blkcipher API to be removed.
>
> Note: I made CTR use the same function for encryption and decryption,
> since CTR encryption and decryption are identical.
>
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> ---
> arch/s390/crypto/des_s390.c | 419 +++++++++++++++---------------------
> 1 file changed, 172 insertions(+), 247 deletions(-)
>
> diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c
> index 439b100c6f2e..bfbafd35bcbd 100644
> --- a/arch/s390/crypto/des_s390.c
> +++ b/arch/s390/crypto/des_s390.c
> @@ -17,6 +17,7 @@
> #include <linux/mutex.h>
> #include <crypto/algapi.h>
> #include <crypto/internal/des.h>
> +#include <crypto/internal/skcipher.h>
> #include <asm/cpacf.h>
>
> #define DES3_KEY_SIZE (3 * DES_KEY_SIZE)
> @@ -45,6 +46,12 @@ static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
> return 0;
> }
>
> +static int des_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key,
> + unsigned int key_len)
> +{
> + return des_setkey(crypto_skcipher_tfm(tfm), key, key_len);
> +}
> +
> static void s390_des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
> {
> struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
> @@ -79,28 +86,30 @@ static struct crypto_alg des_alg = {
> }
> };
>
> -static int ecb_desall_crypt(struct blkcipher_desc *desc, unsigned long fc,
> - struct blkcipher_walk *walk)
> +static int ecb_desall_crypt(struct skcipher_request *req, unsigned long fc)
> {
> - struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
> + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
> + struct s390_des_ctx *ctx = crypto_skcipher_ctx(tfm);
> + struct skcipher_walk walk;
> unsigned int nbytes, n;
> int ret;
>
> - ret = blkcipher_walk_virt(desc, walk);
> - while ((nbytes = walk->nbytes) >= DES_BLOCK_SIZE) {
> + ret = skcipher_walk_virt(&walk, req, false);
> + while ((nbytes = walk.nbytes) != 0) {
> /* only use complete blocks */
> n = nbytes & ~(DES_BLOCK_SIZE - 1);
> - cpacf_km(fc, ctx->key, walk->dst.virt.addr,
> - walk->src.virt.addr, n);
> - ret = blkcipher_walk_done(desc, walk, nbytes - n);
> + cpacf_km(fc, ctx->key, walk.dst.virt.addr,
> + walk.src.virt.addr, n);
> + ret = skcipher_walk_done(&walk, nbytes - n);
> }
> return ret;
> }
>
> -static int cbc_desall_crypt(struct blkcipher_desc *desc, unsigned long fc,
> - struct blkcipher_walk *walk)
> +static int cbc_desall_crypt(struct skcipher_request *req, unsigned long fc)
> {
> - struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
> + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
> + struct s390_des_ctx *ctx = crypto_skcipher_ctx(tfm);
> + struct skcipher_walk walk;
> unsigned int nbytes, n;
> int ret;
> struct {
> @@ -108,99 +117,69 @@ static int cbc_desall_crypt(struct blkcipher_desc *desc, unsigned long fc,
> u8 key[DES3_KEY_SIZE];
> } param;
>
> - ret = blkcipher_walk_virt(desc, walk);
> - memcpy(param.iv, walk->iv, DES_BLOCK_SIZE);
> + ret = skcipher_walk_virt(&walk, req, false);
> + if (ret)
> + return ret;
> + memcpy(param.iv, walk.iv, DES_BLOCK_SIZE);
> memcpy(param.key, ctx->key, DES3_KEY_SIZE);
> - while ((nbytes = walk->nbytes) >= DES_BLOCK_SIZE) {
> + while ((nbytes = walk.nbytes) != 0) {
> /* only use complete blocks */
> n = nbytes & ~(DES_BLOCK_SIZE - 1);
> - cpacf_kmc(fc, ¶m, walk->dst.virt.addr,
> - walk->src.virt.addr, n);
> - ret = blkcipher_walk_done(desc, walk, nbytes - n);
> + cpacf_kmc(fc, ¶m, walk.dst.virt.addr,
> + walk.src.virt.addr, n);
> + memcpy(walk.iv, param.iv, DES_BLOCK_SIZE);
> + ret = skcipher_walk_done(&walk, nbytes - n);
> }
> - memcpy(walk->iv, param.iv, DES_BLOCK_SIZE);
> return ret;
> }
>
> -static int ecb_des_encrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int ecb_des_encrypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return ecb_desall_crypt(desc, CPACF_KM_DEA, &walk);
> + return ecb_desall_crypt(req, CPACF_KM_DEA);
> }
>
> -static int ecb_des_decrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int ecb_des_decrypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return ecb_desall_crypt(desc, CPACF_KM_DEA | CPACF_DECRYPT, &walk);
> + return ecb_desall_crypt(req, CPACF_KM_DEA | CPACF_DECRYPT);
> }
>
> -static struct crypto_alg ecb_des_alg = {
> - .cra_name = "ecb(des)",
> - .cra_driver_name = "ecb-des-s390",
> - .cra_priority = 400, /* combo: des + ecb */
> - .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
> - .cra_blocksize = DES_BLOCK_SIZE,
> - .cra_ctxsize = sizeof(struct s390_des_ctx),
> - .cra_type = &crypto_blkcipher_type,
> - .cra_module = THIS_MODULE,
> - .cra_u = {
> - .blkcipher = {
> - .min_keysize = DES_KEY_SIZE,
> - .max_keysize = DES_KEY_SIZE,
> - .setkey = des_setkey,
> - .encrypt = ecb_des_encrypt,
> - .decrypt = ecb_des_decrypt,
> - }
> - }
> +static struct skcipher_alg ecb_des_alg = {
> + .base.cra_name = "ecb(des)",
> + .base.cra_driver_name = "ecb-des-s390",
> + .base.cra_priority = 400, /* combo: des + ecb */
> + .base.cra_blocksize = DES_BLOCK_SIZE,
> + .base.cra_ctxsize = sizeof(struct s390_des_ctx),
> + .base.cra_module = THIS_MODULE,
> + .min_keysize = DES_KEY_SIZE,
> + .max_keysize = DES_KEY_SIZE,
> + .setkey = des_setkey_skcipher,
> + .encrypt = ecb_des_encrypt,
> + .decrypt = ecb_des_decrypt,
> };
>
> -static int cbc_des_encrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int cbc_des_encrypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return cbc_desall_crypt(desc, CPACF_KMC_DEA, &walk);
> + return cbc_desall_crypt(req, CPACF_KMC_DEA);
> }
>
> -static int cbc_des_decrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int cbc_des_decrypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return cbc_desall_crypt(desc, CPACF_KMC_DEA | CPACF_DECRYPT, &walk);
> + return cbc_desall_crypt(req, CPACF_KMC_DEA | CPACF_DECRYPT);
> }
>
> -static struct crypto_alg cbc_des_alg = {
> - .cra_name = "cbc(des)",
> - .cra_driver_name = "cbc-des-s390",
> - .cra_priority = 400, /* combo: des + cbc */
> - .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
> - .cra_blocksize = DES_BLOCK_SIZE,
> - .cra_ctxsize = sizeof(struct s390_des_ctx),
> - .cra_type = &crypto_blkcipher_type,
> - .cra_module = THIS_MODULE,
> - .cra_u = {
> - .blkcipher = {
> - .min_keysize = DES_KEY_SIZE,
> - .max_keysize = DES_KEY_SIZE,
> - .ivsize = DES_BLOCK_SIZE,
> - .setkey = des_setkey,
> - .encrypt = cbc_des_encrypt,
> - .decrypt = cbc_des_decrypt,
> - }
> - }
> +static struct skcipher_alg cbc_des_alg = {
> + .base.cra_name = "cbc(des)",
> + .base.cra_driver_name = "cbc-des-s390",
> + .base.cra_priority = 400, /* combo: des + cbc */
> + .base.cra_blocksize = DES_BLOCK_SIZE,
> + .base.cra_ctxsize = sizeof(struct s390_des_ctx),
> + .base.cra_module = THIS_MODULE,
> + .min_keysize = DES_KEY_SIZE,
> + .max_keysize = DES_KEY_SIZE,
> + .ivsize = DES_BLOCK_SIZE,
> + .setkey = des_setkey_skcipher,
> + .encrypt = cbc_des_encrypt,
> + .decrypt = cbc_des_decrypt,
> };
>
> /*
> @@ -232,6 +211,12 @@ static int des3_setkey(struct crypto_tfm *tfm, const u8 *key,
> return 0;
> }
>
> +static int des3_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key,
> + unsigned int key_len)
> +{
> + return des3_setkey(crypto_skcipher_tfm(tfm), key, key_len);
> +}
> +
> static void des3_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
> {
> struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
> @@ -266,87 +251,53 @@ static struct crypto_alg des3_alg = {
> }
> };
>
> -static int ecb_des3_encrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int ecb_des3_encrypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return ecb_desall_crypt(desc, CPACF_KM_TDEA_192, &walk);
> + return ecb_desall_crypt(req, CPACF_KM_TDEA_192);
> }
>
> -static int ecb_des3_decrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int ecb_des3_decrypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return ecb_desall_crypt(desc, CPACF_KM_TDEA_192 | CPACF_DECRYPT,
> - &walk);
> + return ecb_desall_crypt(req, CPACF_KM_TDEA_192 | CPACF_DECRYPT);
> }
>
> -static struct crypto_alg ecb_des3_alg = {
> - .cra_name = "ecb(des3_ede)",
> - .cra_driver_name = "ecb-des3_ede-s390",
> - .cra_priority = 400, /* combo: des3 + ecb */
> - .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
> - .cra_blocksize = DES_BLOCK_SIZE,
> - .cra_ctxsize = sizeof(struct s390_des_ctx),
> - .cra_type = &crypto_blkcipher_type,
> - .cra_module = THIS_MODULE,
> - .cra_u = {
> - .blkcipher = {
> - .min_keysize = DES3_KEY_SIZE,
> - .max_keysize = DES3_KEY_SIZE,
> - .setkey = des3_setkey,
> - .encrypt = ecb_des3_encrypt,
> - .decrypt = ecb_des3_decrypt,
> - }
> - }
> +static struct skcipher_alg ecb_des3_alg = {
> + .base.cra_name = "ecb(des3_ede)",
> + .base.cra_driver_name = "ecb-des3_ede-s390",
> + .base.cra_priority = 400, /* combo: des3 + ecb */
> + .base.cra_blocksize = DES_BLOCK_SIZE,
> + .base.cra_ctxsize = sizeof(struct s390_des_ctx),
> + .base.cra_module = THIS_MODULE,
> + .min_keysize = DES3_KEY_SIZE,
> + .max_keysize = DES3_KEY_SIZE,
> + .setkey = des3_setkey_skcipher,
> + .encrypt = ecb_des3_encrypt,
> + .decrypt = ecb_des3_decrypt,
> };
>
> -static int cbc_des3_encrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int cbc_des3_encrypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return cbc_desall_crypt(desc, CPACF_KMC_TDEA_192, &walk);
> + return cbc_desall_crypt(req, CPACF_KMC_TDEA_192);
> }
>
> -static int cbc_des3_decrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int cbc_des3_decrypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return cbc_desall_crypt(desc, CPACF_KMC_TDEA_192 | CPACF_DECRYPT,
> - &walk);
> + return cbc_desall_crypt(req, CPACF_KMC_TDEA_192 | CPACF_DECRYPT);
> }
>
> -static struct crypto_alg cbc_des3_alg = {
> - .cra_name = "cbc(des3_ede)",
> - .cra_driver_name = "cbc-des3_ede-s390",
> - .cra_priority = 400, /* combo: des3 + cbc */
> - .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
> - .cra_blocksize = DES_BLOCK_SIZE,
> - .cra_ctxsize = sizeof(struct s390_des_ctx),
> - .cra_type = &crypto_blkcipher_type,
> - .cra_module = THIS_MODULE,
> - .cra_u = {
> - .blkcipher = {
> - .min_keysize = DES3_KEY_SIZE,
> - .max_keysize = DES3_KEY_SIZE,
> - .ivsize = DES_BLOCK_SIZE,
> - .setkey = des3_setkey,
> - .encrypt = cbc_des3_encrypt,
> - .decrypt = cbc_des3_decrypt,
> - }
> - }
> +static struct skcipher_alg cbc_des3_alg = {
> + .base.cra_name = "cbc(des3_ede)",
> + .base.cra_driver_name = "cbc-des3_ede-s390",
> + .base.cra_priority = 400, /* combo: des3 + cbc */
> + .base.cra_blocksize = DES_BLOCK_SIZE,
> + .base.cra_ctxsize = sizeof(struct s390_des_ctx),
> + .base.cra_module = THIS_MODULE,
> + .min_keysize = DES3_KEY_SIZE,
> + .max_keysize = DES3_KEY_SIZE,
> + .ivsize = DES_BLOCK_SIZE,
> + .setkey = des3_setkey_skcipher,
> + .encrypt = cbc_des3_encrypt,
> + .decrypt = cbc_des3_decrypt,
> };
>
> static unsigned int __ctrblk_init(u8 *ctrptr, u8 *iv, unsigned int nbytes)
> @@ -364,128 +315,90 @@ static unsigned int __ctrblk_init(u8 *ctrptr, u8 *iv, unsigned int nbytes)
> return n;
> }
>
> -static int ctr_desall_crypt(struct blkcipher_desc *desc, unsigned long fc,
> - struct blkcipher_walk *walk)
> +static int ctr_desall_crypt(struct skcipher_request *req, unsigned long fc)
> {
> - struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
> + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
> + struct s390_des_ctx *ctx = crypto_skcipher_ctx(tfm);
> u8 buf[DES_BLOCK_SIZE], *ctrptr;
> + struct skcipher_walk walk;
> unsigned int n, nbytes;
> int ret, locked;
>
> locked = mutex_trylock(&ctrblk_lock);
>
> - ret = blkcipher_walk_virt_block(desc, walk, DES_BLOCK_SIZE);
> - while ((nbytes = walk->nbytes) >= DES_BLOCK_SIZE) {
> + ret = skcipher_walk_virt(&walk, req, false);
> + while ((nbytes = walk.nbytes) >= DES_BLOCK_SIZE) {
> n = DES_BLOCK_SIZE;
> if (nbytes >= 2*DES_BLOCK_SIZE && locked)
> - n = __ctrblk_init(ctrblk, walk->iv, nbytes);
> - ctrptr = (n > DES_BLOCK_SIZE) ? ctrblk : walk->iv;
> - cpacf_kmctr(fc, ctx->key, walk->dst.virt.addr,
> - walk->src.virt.addr, n, ctrptr);
> + n = __ctrblk_init(ctrblk, walk.iv, nbytes);
> + ctrptr = (n > DES_BLOCK_SIZE) ? ctrblk : walk.iv;
> + cpacf_kmctr(fc, ctx->key, walk.dst.virt.addr,
> + walk.src.virt.addr, n, ctrptr);
> if (ctrptr == ctrblk)
> - memcpy(walk->iv, ctrptr + n - DES_BLOCK_SIZE,
> + memcpy(walk.iv, ctrptr + n - DES_BLOCK_SIZE,
> DES_BLOCK_SIZE);
> - crypto_inc(walk->iv, DES_BLOCK_SIZE);
> - ret = blkcipher_walk_done(desc, walk, nbytes - n);
> + crypto_inc(walk.iv, DES_BLOCK_SIZE);
> + ret = skcipher_walk_done(&walk, nbytes - n);
> }
> if (locked)
> mutex_unlock(&ctrblk_lock);
> /* final block may be < DES_BLOCK_SIZE, copy only nbytes */
> if (nbytes) {
> - cpacf_kmctr(fc, ctx->key, buf, walk->src.virt.addr,
> - DES_BLOCK_SIZE, walk->iv);
> - memcpy(walk->dst.virt.addr, buf, nbytes);
> - crypto_inc(walk->iv, DES_BLOCK_SIZE);
> - ret = blkcipher_walk_done(desc, walk, 0);
> + cpacf_kmctr(fc, ctx->key, buf, walk.src.virt.addr,
> + DES_BLOCK_SIZE, walk.iv);
> + memcpy(walk.dst.virt.addr, buf, nbytes);
> + crypto_inc(walk.iv, DES_BLOCK_SIZE);
> + ret = skcipher_walk_done(&walk, 0);
> }
> return ret;
> }
>
> -static int ctr_des_encrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> -{
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return ctr_desall_crypt(desc, CPACF_KMCTR_DEA, &walk);
> -}
> -
> -static int ctr_des_decrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int ctr_des_crypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return ctr_desall_crypt(desc, CPACF_KMCTR_DEA | CPACF_DECRYPT, &walk);
> + return ctr_desall_crypt(req, CPACF_KMCTR_DEA);
> }
>
> -static struct crypto_alg ctr_des_alg = {
> - .cra_name = "ctr(des)",
> - .cra_driver_name = "ctr-des-s390",
> - .cra_priority = 400, /* combo: des + ctr */
> - .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
> - .cra_blocksize = 1,
> - .cra_ctxsize = sizeof(struct s390_des_ctx),
> - .cra_type = &crypto_blkcipher_type,
> - .cra_module = THIS_MODULE,
> - .cra_u = {
> - .blkcipher = {
> - .min_keysize = DES_KEY_SIZE,
> - .max_keysize = DES_KEY_SIZE,
> - .ivsize = DES_BLOCK_SIZE,
> - .setkey = des_setkey,
> - .encrypt = ctr_des_encrypt,
> - .decrypt = ctr_des_decrypt,
> - }
> - }
> +static struct skcipher_alg ctr_des_alg = {
> + .base.cra_name = "ctr(des)",
> + .base.cra_driver_name = "ctr-des-s390",
> + .base.cra_priority = 400, /* combo: des + ctr */
> + .base.cra_blocksize = 1,
> + .base.cra_ctxsize = sizeof(struct s390_des_ctx),
> + .base.cra_module = THIS_MODULE,
> + .min_keysize = DES_KEY_SIZE,
> + .max_keysize = DES_KEY_SIZE,
> + .ivsize = DES_BLOCK_SIZE,
> + .setkey = des_setkey_skcipher,
> + .encrypt = ctr_des_crypt,
> + .decrypt = ctr_des_crypt,
> + .chunksize = DES_BLOCK_SIZE,
> };
>
> -static int ctr_des3_encrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> -{
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return ctr_desall_crypt(desc, CPACF_KMCTR_TDEA_192, &walk);
> -}
> -
> -static int ctr_des3_decrypt(struct blkcipher_desc *desc,
> - struct scatterlist *dst, struct scatterlist *src,
> - unsigned int nbytes)
> +static int ctr_des3_crypt(struct skcipher_request *req)
> {
> - struct blkcipher_walk walk;
> -
> - blkcipher_walk_init(&walk, dst, src, nbytes);
> - return ctr_desall_crypt(desc, CPACF_KMCTR_TDEA_192 | CPACF_DECRYPT,
> - &walk);
> + return ctr_desall_crypt(req, CPACF_KMCTR_TDEA_192);
> }
>
> -static struct crypto_alg ctr_des3_alg = {
> - .cra_name = "ctr(des3_ede)",
> - .cra_driver_name = "ctr-des3_ede-s390",
> - .cra_priority = 400, /* combo: des3 + ede */
> - .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
> - .cra_blocksize = 1,
> - .cra_ctxsize = sizeof(struct s390_des_ctx),
> - .cra_type = &crypto_blkcipher_type,
> - .cra_module = THIS_MODULE,
> - .cra_u = {
> - .blkcipher = {
> - .min_keysize = DES3_KEY_SIZE,
> - .max_keysize = DES3_KEY_SIZE,
> - .ivsize = DES_BLOCK_SIZE,
> - .setkey = des3_setkey,
> - .encrypt = ctr_des3_encrypt,
> - .decrypt = ctr_des3_decrypt,
> - }
> - }
> +static struct skcipher_alg ctr_des3_alg = {
> + .base.cra_name = "ctr(des3_ede)",
> + .base.cra_driver_name = "ctr-des3_ede-s390",
> + .base.cra_priority = 400, /* combo: des3 + ede */
> + .base.cra_blocksize = 1,
> + .base.cra_ctxsize = sizeof(struct s390_des_ctx),
> + .base.cra_module = THIS_MODULE,
> + .min_keysize = DES3_KEY_SIZE,
> + .max_keysize = DES3_KEY_SIZE,
> + .ivsize = DES_BLOCK_SIZE,
> + .setkey = des3_setkey_skcipher,
> + .encrypt = ctr_des3_crypt,
> + .decrypt = ctr_des3_crypt,
> + .chunksize = DES_BLOCK_SIZE,
> };
>
> -static struct crypto_alg *des_s390_algs_ptr[8];
> +static struct crypto_alg *des_s390_algs_ptr[2];
> static int des_s390_algs_num;
> +static struct skcipher_alg *des_s390_skciphers_ptr[6];
> +static int des_s390_skciphers_num;
>
> static int des_s390_register_alg(struct crypto_alg *alg)
> {
> @@ -497,10 +410,22 @@ static int des_s390_register_alg(struct crypto_alg *alg)
> return ret;
> }
>
> +static int des_s390_register_skcipher(struct skcipher_alg *alg)
> +{
> + int ret;
> +
> + ret = crypto_register_skcipher(alg);
> + if (!ret)
> + des_s390_skciphers_ptr[des_s390_skciphers_num++] = alg;
> + return ret;
> +}
> +
> static void des_s390_exit(void)
> {
> while (des_s390_algs_num--)
> crypto_unregister_alg(des_s390_algs_ptr[des_s390_algs_num]);
> + while (des_s390_skciphers_num--)
> + crypto_unregister_skcipher(des_s390_skciphers_ptr[des_s390_skciphers_num]);
> if (ctrblk)
> free_page((unsigned long) ctrblk);
> }
> @@ -518,12 +443,12 @@ static int __init des_s390_init(void)
> ret = des_s390_register_alg(&des_alg);
> if (ret)
> goto out_err;
> - ret = des_s390_register_alg(&ecb_des_alg);
> + ret = des_s390_register_skcipher(&ecb_des_alg);
> if (ret)
> goto out_err;
> }
> if (cpacf_test_func(&kmc_functions, CPACF_KMC_DEA)) {
> - ret = des_s390_register_alg(&cbc_des_alg);
> + ret = des_s390_register_skcipher(&cbc_des_alg);
> if (ret)
> goto out_err;
> }
> @@ -531,12 +456,12 @@ static int __init des_s390_init(void)
> ret = des_s390_register_alg(&des3_alg);
> if (ret)
> goto out_err;
> - ret = des_s390_register_alg(&ecb_des3_alg);
> + ret = des_s390_register_skcipher(&ecb_des3_alg);
> if (ret)
> goto out_err;
> }
> if (cpacf_test_func(&kmc_functions, CPACF_KMC_TDEA_192)) {
> - ret = des_s390_register_alg(&cbc_des3_alg);
> + ret = des_s390_register_skcipher(&cbc_des3_alg);
> if (ret)
> goto out_err;
> }
> @@ -551,12 +476,12 @@ static int __init des_s390_init(void)
> }
>
> if (cpacf_test_func(&kmctr_functions, CPACF_KMCTR_DEA)) {
> - ret = des_s390_register_alg(&ctr_des_alg);
> + ret = des_s390_register_skcipher(&ctr_des_alg);
> if (ret)
> goto out_err;
> }
> if (cpacf_test_func(&kmctr_functions, CPACF_KMCTR_TDEA_192)) {
> - ret = des_s390_register_alg(&ctr_des3_alg);
> + ret = des_s390_register_skcipher(&ctr_des3_alg);
> if (ret)
> goto out_err;
> }
Tested with extended selftests and own tests via AF_ALG interface, works.
Thanks for this great work.
reviewed-by: Harald Freudenberger <freude@xxxxxxxxxxxxx>
