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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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crypto: sparc/aes - convert to skcipher API
Convert the glue code for the SPARC64 AES opcodes implementations of AES-ECB, AES-CBC, and AES-CTR from the deprecated "blkcipher" API to the "skcipher" API. This is needed in order for the blkcipher API to be removed. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers
Herbert Xu
parent
fcf801cc55
commit
64db5e7439
@ -24,6 +24,7 @@
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#include <linux/types.h>
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#include <crypto/algapi.h>
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#include <crypto/aes.h>
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#include <crypto/internal/skcipher.h>
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#include <asm/fpumacro.h>
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#include <asm/pstate.h>
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@ -197,6 +198,12 @@ static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
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return 0;
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}
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static int aes_set_key_skcipher(struct crypto_skcipher *tfm, const u8 *in_key,
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unsigned int key_len)
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{
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return aes_set_key(crypto_skcipher_tfm(tfm), in_key, key_len);
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}
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static void crypto_aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
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{
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struct crypto_sparc64_aes_ctx *ctx = crypto_tfm_ctx(tfm);
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@ -211,131 +218,108 @@ static void crypto_aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
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ctx->ops->decrypt(&ctx->key[0], (const u32 *) src, (u32 *) dst);
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}
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#define AES_BLOCK_MASK (~(AES_BLOCK_SIZE-1))
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static int ecb_encrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int ecb_encrypt(struct skcipher_request *req)
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{
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struct crypto_sparc64_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
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struct blkcipher_walk walk;
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
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struct skcipher_walk walk;
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unsigned int nbytes;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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err = skcipher_walk_virt(&walk, req, true);
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if (err)
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return err;
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ctx->ops->load_encrypt_keys(&ctx->key[0]);
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while ((nbytes = walk.nbytes)) {
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unsigned int block_len = nbytes & AES_BLOCK_MASK;
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if (likely(block_len)) {
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ctx->ops->ecb_encrypt(&ctx->key[0],
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(const u64 *)walk.src.virt.addr,
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(u64 *) walk.dst.virt.addr,
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block_len);
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}
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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while ((nbytes = walk.nbytes) != 0) {
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ctx->ops->ecb_encrypt(&ctx->key[0], walk.src.virt.addr,
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walk.dst.virt.addr,
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round_down(nbytes, AES_BLOCK_SIZE));
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err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
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}
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fprs_write(0);
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return err;
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}
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static int ecb_decrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int ecb_decrypt(struct skcipher_request *req)
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{
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struct crypto_sparc64_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
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struct blkcipher_walk walk;
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u64 *key_end;
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
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const u64 *key_end;
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struct skcipher_walk walk;
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unsigned int nbytes;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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err = skcipher_walk_virt(&walk, req, true);
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if (err)
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return err;
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ctx->ops->load_decrypt_keys(&ctx->key[0]);
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key_end = &ctx->key[ctx->expanded_key_length / sizeof(u64)];
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while ((nbytes = walk.nbytes)) {
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unsigned int block_len = nbytes & AES_BLOCK_MASK;
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if (likely(block_len)) {
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ctx->ops->ecb_decrypt(key_end,
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(const u64 *) walk.src.virt.addr,
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(u64 *) walk.dst.virt.addr, block_len);
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}
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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while ((nbytes = walk.nbytes) != 0) {
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ctx->ops->ecb_decrypt(key_end, walk.src.virt.addr,
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walk.dst.virt.addr,
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round_down(nbytes, AES_BLOCK_SIZE));
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err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
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}
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fprs_write(0);
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return err;
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}
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static int cbc_encrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int cbc_encrypt(struct skcipher_request *req)
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{
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struct crypto_sparc64_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
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struct blkcipher_walk walk;
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
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struct skcipher_walk walk;
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unsigned int nbytes;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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err = skcipher_walk_virt(&walk, req, true);
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if (err)
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return err;
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ctx->ops->load_encrypt_keys(&ctx->key[0]);
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while ((nbytes = walk.nbytes)) {
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unsigned int block_len = nbytes & AES_BLOCK_MASK;
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if (likely(block_len)) {
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ctx->ops->cbc_encrypt(&ctx->key[0],
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(const u64 *)walk.src.virt.addr,
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(u64 *) walk.dst.virt.addr,
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block_len, (u64 *) walk.iv);
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}
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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while ((nbytes = walk.nbytes) != 0) {
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ctx->ops->cbc_encrypt(&ctx->key[0], walk.src.virt.addr,
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walk.dst.virt.addr,
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round_down(nbytes, AES_BLOCK_SIZE),
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walk.iv);
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err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
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}
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fprs_write(0);
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return err;
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}
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static int cbc_decrypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int cbc_decrypt(struct skcipher_request *req)
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{
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struct crypto_sparc64_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
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struct blkcipher_walk walk;
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u64 *key_end;
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
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const u64 *key_end;
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struct skcipher_walk walk;
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unsigned int nbytes;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt(desc, &walk);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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err = skcipher_walk_virt(&walk, req, true);
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if (err)
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return err;
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ctx->ops->load_decrypt_keys(&ctx->key[0]);
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key_end = &ctx->key[ctx->expanded_key_length / sizeof(u64)];
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while ((nbytes = walk.nbytes)) {
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unsigned int block_len = nbytes & AES_BLOCK_MASK;
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if (likely(block_len)) {
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ctx->ops->cbc_decrypt(key_end,
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(const u64 *) walk.src.virt.addr,
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(u64 *) walk.dst.virt.addr,
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block_len, (u64 *) walk.iv);
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}
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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while ((nbytes = walk.nbytes) != 0) {
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ctx->ops->cbc_decrypt(key_end, walk.src.virt.addr,
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walk.dst.virt.addr,
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round_down(nbytes, AES_BLOCK_SIZE),
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walk.iv);
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err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
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}
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fprs_write(0);
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return err;
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}
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static void ctr_crypt_final(struct crypto_sparc64_aes_ctx *ctx,
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struct blkcipher_walk *walk)
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static void ctr_crypt_final(const struct crypto_sparc64_aes_ctx *ctx,
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struct skcipher_walk *walk)
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{
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u8 *ctrblk = walk->iv;
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u64 keystream[AES_BLOCK_SIZE / sizeof(u64)];
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@ -349,40 +333,35 @@ static void ctr_crypt_final(struct crypto_sparc64_aes_ctx *ctx,
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crypto_inc(ctrblk, AES_BLOCK_SIZE);
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}
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static int ctr_crypt(struct blkcipher_desc *desc,
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struct scatterlist *dst, struct scatterlist *src,
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unsigned int nbytes)
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static int ctr_crypt(struct skcipher_request *req)
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{
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struct crypto_sparc64_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
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struct blkcipher_walk walk;
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
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struct skcipher_walk walk;
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unsigned int nbytes;
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int err;
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blkcipher_walk_init(&walk, dst, src, nbytes);
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err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE);
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desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
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err = skcipher_walk_virt(&walk, req, true);
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if (err)
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return err;
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ctx->ops->load_encrypt_keys(&ctx->key[0]);
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while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) {
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unsigned int block_len = nbytes & AES_BLOCK_MASK;
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if (likely(block_len)) {
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ctx->ops->ctr_crypt(&ctx->key[0],
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(const u64 *)walk.src.virt.addr,
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(u64 *) walk.dst.virt.addr,
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block_len, (u64 *) walk.iv);
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}
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nbytes &= AES_BLOCK_SIZE - 1;
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err = blkcipher_walk_done(desc, &walk, nbytes);
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ctx->ops->ctr_crypt(&ctx->key[0], walk.src.virt.addr,
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walk.dst.virt.addr,
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round_down(nbytes, AES_BLOCK_SIZE),
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walk.iv);
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err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
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}
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if (walk.nbytes) {
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ctr_crypt_final(ctx, &walk);
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err = blkcipher_walk_done(desc, &walk, 0);
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err = skcipher_walk_done(&walk, 0);
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}
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fprs_write(0);
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return err;
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}
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static struct crypto_alg algs[] = { {
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static struct crypto_alg cipher_alg = {
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.cra_name = "aes",
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.cra_driver_name = "aes-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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@ -400,66 +379,53 @@ static struct crypto_alg algs[] = { {
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.cia_decrypt = crypto_aes_decrypt
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}
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}
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}, {
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.cra_name = "ecb(aes)",
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.cra_driver_name = "ecb-aes-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
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.cra_alignmask = 7,
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.cra_type = &crypto_blkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_u = {
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.blkcipher = {
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};
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static struct skcipher_alg skcipher_algs[] = {
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{
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.base.cra_name = "ecb(aes)",
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.base.cra_driver_name = "ecb-aes-sparc64",
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.base.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.base.cra_blocksize = AES_BLOCK_SIZE,
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.base.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
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.base.cra_alignmask = 7,
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.base.cra_module = THIS_MODULE,
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.setkey = aes_set_key,
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.setkey = aes_set_key_skcipher,
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.encrypt = ecb_encrypt,
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.decrypt = ecb_decrypt,
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},
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},
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}, {
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.cra_name = "cbc(aes)",
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.cra_driver_name = "cbc-aes-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
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.cra_alignmask = 7,
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.cra_type = &crypto_blkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_u = {
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.blkcipher = {
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.base.cra_name = "cbc(aes)",
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.base.cra_driver_name = "cbc-aes-sparc64",
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.base.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.base.cra_blocksize = AES_BLOCK_SIZE,
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.base.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
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.base.cra_alignmask = 7,
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.base.cra_module = THIS_MODULE,
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_BLOCK_SIZE,
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.setkey = aes_set_key,
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.setkey = aes_set_key_skcipher,
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.encrypt = cbc_encrypt,
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.decrypt = cbc_decrypt,
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},
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},
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}, {
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.cra_name = "ctr(aes)",
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.cra_driver_name = "ctr-aes-sparc64",
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.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
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.cra_blocksize = 1,
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.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
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.cra_alignmask = 7,
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.cra_type = &crypto_blkcipher_type,
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.cra_module = THIS_MODULE,
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.cra_u = {
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.blkcipher = {
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.base.cra_name = "ctr(aes)",
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.base.cra_driver_name = "ctr-aes-sparc64",
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.base.cra_priority = SPARC_CR_OPCODE_PRIORITY,
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.base.cra_blocksize = 1,
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.base.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
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.base.cra_alignmask = 7,
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.base.cra_module = THIS_MODULE,
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_BLOCK_SIZE,
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.setkey = aes_set_key,
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.setkey = aes_set_key_skcipher,
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.encrypt = ctr_crypt,
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.decrypt = ctr_crypt,
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},
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},
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} };
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.chunksize = AES_BLOCK_SIZE,
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}
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};
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static bool __init sparc64_has_aes_opcode(void)
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{
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@ -477,17 +443,27 @@ static bool __init sparc64_has_aes_opcode(void)
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static int __init aes_sparc64_mod_init(void)
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{
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if (sparc64_has_aes_opcode()) {
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pr_info("Using sparc64 aes opcodes optimized AES implementation\n");
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return crypto_register_algs(algs, ARRAY_SIZE(algs));
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}
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int err;
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if (!sparc64_has_aes_opcode()) {
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pr_info("sparc64 aes opcodes not available.\n");
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return -ENODEV;
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}
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pr_info("Using sparc64 aes opcodes optimized AES implementation\n");
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err = crypto_register_alg(&cipher_alg);
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if (err)
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return err;
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err = crypto_register_skciphers(skcipher_algs,
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ARRAY_SIZE(skcipher_algs));
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if (err)
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crypto_unregister_alg(&cipher_alg);
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return err;
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}
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static void __exit aes_sparc64_mod_fini(void)
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{
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crypto_unregister_algs(algs, ARRAY_SIZE(algs));
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crypto_unregister_alg(&cipher_alg);
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crypto_unregister_skciphers(skcipher_algs, ARRAY_SIZE(skcipher_algs));
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}
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module_init(aes_sparc64_mod_init);
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@ -1098,8 +1098,7 @@ config CRYPTO_AES_NI_INTEL
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config CRYPTO_AES_SPARC64
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tristate "AES cipher algorithms (SPARC64)"
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depends on SPARC64
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select CRYPTO_CRYPTD
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select CRYPTO_ALGAPI
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select CRYPTO_BLKCIPHER
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help
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Use SPARC64 crypto opcodes for AES algorithm.
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