crypto: nx - Convert GCM to new AEAD interface
This patch converts the nx GCM implementations to the new AEAD interface. This is compile-tested only. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>hifive-unleashed-5.1
Herbert Xu
parent
0af8fbca8c
commit
201f28f055
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@ -93,14 +93,6 @@ out:
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return rc;
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}
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static int gcm_aes_nx_setauthsize(struct crypto_aead *tfm,
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unsigned int authsize)
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{
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crypto_aead_crt(tfm)->authsize = authsize;
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return 0;
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}
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static int gcm4106_aes_nx_setauthsize(struct crypto_aead *tfm,
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unsigned int authsize)
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{
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@ -113,8 +105,6 @@ static int gcm4106_aes_nx_setauthsize(struct crypto_aead *tfm,
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return -EINVAL;
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}
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crypto_aead_crt(tfm)->authsize = authsize;
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return 0;
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}
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@ -131,7 +121,7 @@ static int nx_gca(struct nx_crypto_ctx *nx_ctx,
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unsigned int max_sg_len;
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if (nbytes <= AES_BLOCK_SIZE) {
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scatterwalk_start(&walk, req->assoc);
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scatterwalk_start(&walk, req->src);
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scatterwalk_copychunks(out, &walk, nbytes, SCATTERWALK_FROM_SG);
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scatterwalk_done(&walk, SCATTERWALK_FROM_SG, 0);
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return 0;
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@ -156,7 +146,7 @@ static int nx_gca(struct nx_crypto_ctx *nx_ctx,
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NX_PAGE_SIZE * (max_sg_len - 1));
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nx_sg = nx_walk_and_build(nx_ctx->in_sg, max_sg_len,
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req->assoc, processed, &to_process);
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req->src, processed, &to_process);
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if ((to_process + processed) < nbytes)
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NX_CPB_FDM(csbcpb_aead) |= NX_FDM_INTERMEDIATE;
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@ -222,7 +212,7 @@ static int gmac(struct aead_request *req, struct blkcipher_desc *desc)
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NX_PAGE_SIZE * (max_sg_len - 1));
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nx_sg = nx_walk_and_build(nx_ctx->in_sg, max_sg_len,
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req->assoc, processed, &to_process);
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req->src, processed, &to_process);
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if ((to_process + processed) < nbytes)
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NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
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@ -374,7 +364,8 @@ static int gcm_aes_nx_crypt(struct aead_request *req, int enc)
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csbcpb->cpb.aes_gcm.bit_length_data = nbytes * 8;
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desc.tfm = (struct crypto_blkcipher *) req->base.tfm;
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rc = nx_build_sg_lists(nx_ctx, &desc, req->dst,
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req->src, &to_process, processed,
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req->src, &to_process,
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processed + req->assoclen,
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csbcpb->cpb.aes_gcm.iv_or_cnt);
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if (rc)
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@ -409,17 +400,19 @@ static int gcm_aes_nx_crypt(struct aead_request *req, int enc)
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mac:
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if (enc) {
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/* copy out the auth tag */
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scatterwalk_map_and_copy(csbcpb->cpb.aes_gcm.out_pat_or_mac,
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req->dst, nbytes,
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crypto_aead_authsize(crypto_aead_reqtfm(req)),
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SCATTERWALK_TO_SG);
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scatterwalk_map_and_copy(
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csbcpb->cpb.aes_gcm.out_pat_or_mac,
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req->dst, req->assoclen + nbytes,
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crypto_aead_authsize(crypto_aead_reqtfm(req)),
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SCATTERWALK_TO_SG);
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} else {
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u8 *itag = nx_ctx->priv.gcm.iauth_tag;
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u8 *otag = csbcpb->cpb.aes_gcm.out_pat_or_mac;
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scatterwalk_map_and_copy(itag, req->src, nbytes,
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crypto_aead_authsize(crypto_aead_reqtfm(req)),
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SCATTERWALK_FROM_SG);
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scatterwalk_map_and_copy(
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itag, req->src, req->assoclen + nbytes,
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crypto_aead_authsize(crypto_aead_reqtfm(req)),
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SCATTERWALK_FROM_SG);
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rc = memcmp(itag, otag,
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crypto_aead_authsize(crypto_aead_reqtfm(req))) ?
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-EBADMSG : 0;
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@ -478,45 +471,39 @@ static int gcm4106_aes_nx_decrypt(struct aead_request *req)
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* during encrypt/decrypt doesn't solve this problem, because it calls
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* blkcipher_walk_done under the covers, which doesn't use walk->blocksize,
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* but instead uses this tfm->blocksize. */
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struct crypto_alg nx_gcm_aes_alg = {
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.cra_name = "gcm(aes)",
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.cra_driver_name = "gcm-aes-nx",
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.cra_priority = 300,
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.cra_flags = CRYPTO_ALG_TYPE_AEAD,
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.cra_blocksize = 1,
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.cra_ctxsize = sizeof(struct nx_crypto_ctx),
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.cra_type = &crypto_aead_type,
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.cra_module = THIS_MODULE,
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.cra_init = nx_crypto_ctx_aes_gcm_init,
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.cra_exit = nx_crypto_ctx_exit,
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.cra_aead = {
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.ivsize = AES_BLOCK_SIZE,
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.maxauthsize = AES_BLOCK_SIZE,
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.setkey = gcm_aes_nx_set_key,
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.setauthsize = gcm_aes_nx_setauthsize,
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.encrypt = gcm_aes_nx_encrypt,
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.decrypt = gcm_aes_nx_decrypt,
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}
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struct aead_alg nx_gcm_aes_alg = {
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.base = {
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.cra_name = "gcm(aes)",
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.cra_driver_name = "gcm-aes-nx",
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.cra_priority = 300,
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.cra_blocksize = 1,
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.cra_ctxsize = sizeof(struct nx_crypto_ctx),
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.cra_module = THIS_MODULE,
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},
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.init = nx_crypto_ctx_aes_gcm_init,
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.exit = nx_crypto_ctx_aead_exit,
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.ivsize = 12,
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.maxauthsize = AES_BLOCK_SIZE,
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.setkey = gcm_aes_nx_set_key,
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.encrypt = gcm_aes_nx_encrypt,
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.decrypt = gcm_aes_nx_decrypt,
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};
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struct crypto_alg nx_gcm4106_aes_alg = {
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.cra_name = "rfc4106(gcm(aes))",
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.cra_driver_name = "rfc4106-gcm-aes-nx",
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.cra_priority = 300,
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.cra_flags = CRYPTO_ALG_TYPE_AEAD,
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.cra_blocksize = 1,
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.cra_ctxsize = sizeof(struct nx_crypto_ctx),
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.cra_type = &crypto_nivaead_type,
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.cra_module = THIS_MODULE,
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.cra_init = nx_crypto_ctx_aes_gcm_init,
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.cra_exit = nx_crypto_ctx_exit,
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.cra_aead = {
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.ivsize = 8,
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.maxauthsize = AES_BLOCK_SIZE,
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.geniv = "seqiv",
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.setkey = gcm4106_aes_nx_set_key,
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.setauthsize = gcm4106_aes_nx_setauthsize,
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.encrypt = gcm4106_aes_nx_encrypt,
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.decrypt = gcm4106_aes_nx_decrypt,
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}
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struct aead_alg nx_gcm4106_aes_alg = {
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.base = {
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.cra_name = "rfc4106(gcm(aes))",
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.cra_driver_name = "rfc4106-gcm-aes-nx",
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.cra_priority = 300,
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.cra_blocksize = 1,
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.cra_ctxsize = sizeof(struct nx_crypto_ctx),
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.cra_module = THIS_MODULE,
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},
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.init = nx_crypto_ctx_aes_gcm_init,
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.exit = nx_crypto_ctx_aead_exit,
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.ivsize = 8,
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.maxauthsize = AES_BLOCK_SIZE,
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.setkey = gcm4106_aes_nx_set_key,
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.setauthsize = gcm4106_aes_nx_setauthsize,
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.encrypt = gcm4106_aes_nx_encrypt,
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.decrypt = gcm4106_aes_nx_decrypt,
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};
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@ -19,8 +19,8 @@
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* Author: Kent Yoder <yoder1@us.ibm.com>
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*/
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#include <crypto/internal/aead.h>
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#include <crypto/internal/hash.h>
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#include <crypto/hash.h>
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#include <crypto/aes.h>
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#include <crypto/sha.h>
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#include <crypto/algapi.h>
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@ -29,7 +29,6 @@
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#include <linux/moduleparam.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/crypto.h>
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#include <linux/scatterlist.h>
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#include <linux/device.h>
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#include <linux/of.h>
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@ -531,11 +530,11 @@ static int nx_register_algs(void)
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if (rc)
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goto out_unreg_ctr;
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rc = crypto_register_alg(&nx_gcm_aes_alg);
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rc = crypto_register_aead(&nx_gcm_aes_alg);
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if (rc)
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goto out_unreg_ctr3686;
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rc = crypto_register_alg(&nx_gcm4106_aes_alg);
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rc = crypto_register_aead(&nx_gcm4106_aes_alg);
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if (rc)
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goto out_unreg_gcm;
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@ -570,9 +569,9 @@ out_unreg_ccm4309:
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out_unreg_ccm:
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crypto_unregister_alg(&nx_ccm_aes_alg);
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out_unreg_gcm4106:
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crypto_unregister_alg(&nx_gcm4106_aes_alg);
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crypto_unregister_aead(&nx_gcm4106_aes_alg);
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out_unreg_gcm:
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crypto_unregister_alg(&nx_gcm_aes_alg);
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crypto_unregister_aead(&nx_gcm_aes_alg);
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out_unreg_ctr3686:
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crypto_unregister_alg(&nx_ctr3686_aes_alg);
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out_unreg_ctr:
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@ -639,9 +638,9 @@ int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm)
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NX_MODE_AES_CCM);
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}
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int nx_crypto_ctx_aes_gcm_init(struct crypto_tfm *tfm)
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int nx_crypto_ctx_aes_gcm_init(struct crypto_aead *tfm)
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{
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return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES,
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return nx_crypto_ctx_init(crypto_aead_ctx(tfm), NX_FC_AES,
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NX_MODE_AES_GCM);
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}
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@ -693,6 +692,13 @@ void nx_crypto_ctx_exit(struct crypto_tfm *tfm)
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nx_ctx->out_sg = NULL;
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}
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void nx_crypto_ctx_aead_exit(struct crypto_aead *tfm)
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{
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struct nx_crypto_ctx *nx_ctx = crypto_aead_ctx(tfm);
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kzfree(nx_ctx->kmem);
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}
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static int nx_probe(struct vio_dev *viodev, const struct vio_device_id *id)
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{
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dev_dbg(&viodev->dev, "driver probed: %s resource id: 0x%x\n",
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@ -721,8 +727,8 @@ static int nx_remove(struct vio_dev *viodev)
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crypto_unregister_alg(&nx_ccm_aes_alg);
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crypto_unregister_alg(&nx_ccm4309_aes_alg);
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crypto_unregister_alg(&nx_gcm_aes_alg);
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crypto_unregister_alg(&nx_gcm4106_aes_alg);
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crypto_unregister_aead(&nx_gcm_aes_alg);
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crypto_unregister_aead(&nx_gcm4106_aes_alg);
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crypto_unregister_alg(&nx_ctr_aes_alg);
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crypto_unregister_alg(&nx_ctr3686_aes_alg);
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crypto_unregister_alg(&nx_cbc_aes_alg);
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@ -143,13 +143,14 @@ struct nx_crypto_ctx {
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/* prototypes */
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int nx_crypto_ctx_aes_ccm_init(struct crypto_tfm *tfm);
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int nx_crypto_ctx_aes_gcm_init(struct crypto_tfm *tfm);
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int nx_crypto_ctx_aes_gcm_init(struct crypto_aead *tfm);
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int nx_crypto_ctx_aes_xcbc_init(struct crypto_tfm *tfm);
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int nx_crypto_ctx_aes_ctr_init(struct crypto_tfm *tfm);
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int nx_crypto_ctx_aes_cbc_init(struct crypto_tfm *tfm);
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int nx_crypto_ctx_aes_ecb_init(struct crypto_tfm *tfm);
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int nx_crypto_ctx_sha_init(struct crypto_tfm *tfm);
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void nx_crypto_ctx_exit(struct crypto_tfm *tfm);
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void nx_crypto_ctx_aead_exit(struct crypto_aead *tfm);
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void nx_ctx_init(struct nx_crypto_ctx *nx_ctx, unsigned int function);
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int nx_hcall_sync(struct nx_crypto_ctx *ctx, struct vio_pfo_op *op,
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u32 may_sleep);
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@ -176,8 +177,8 @@ void nx_debugfs_fini(struct nx_crypto_driver *);
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extern struct crypto_alg nx_cbc_aes_alg;
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extern struct crypto_alg nx_ecb_aes_alg;
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extern struct crypto_alg nx_gcm_aes_alg;
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extern struct crypto_alg nx_gcm4106_aes_alg;
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extern struct aead_alg nx_gcm_aes_alg;
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extern struct aead_alg nx_gcm4106_aes_alg;
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extern struct crypto_alg nx_ctr_aes_alg;
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extern struct crypto_alg nx_ctr3686_aes_alg;
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extern struct crypto_alg nx_ccm_aes_alg;
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