diff options
Diffstat (limited to 'drivers/crypto/ccp/ccp-crypto-aes-galois.c')
| -rw-r--r-- | drivers/crypto/ccp/ccp-crypto-aes-galois.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/drivers/crypto/ccp/ccp-crypto-aes-galois.c b/drivers/crypto/ccp/ccp-crypto-aes-galois.c index ca1f0d780b61..b1dbb8cea559 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes-galois.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-galois.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * AMD Cryptographic Coprocessor (CCP) AES GCM crypto API support * * Copyright (C) 2016,2017 Advanced Micro Devices, Inc. * * Author: Gary R Hook <gary.hook@amd.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> @@ -32,7 +29,7 @@ static int ccp_aes_gcm_complete(struct crypto_async_request *async_req, int ret) static int ccp_aes_gcm_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int key_len) { - struct ccp_ctx *ctx = crypto_aead_ctx(tfm); + struct ccp_ctx *ctx = crypto_aead_ctx_dma(tfm); switch (key_len) { case AES_KEYSIZE_128: @@ -45,7 +42,6 @@ static int ccp_aes_gcm_setkey(struct crypto_aead *tfm, const u8 *key, ctx->u.aes.type = CCP_AES_TYPE_256; break; default: - crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } @@ -61,14 +57,27 @@ static int ccp_aes_gcm_setkey(struct crypto_aead *tfm, const u8 *key, static int ccp_aes_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize) { + switch (authsize) { + case 16: + case 15: + case 14: + case 13: + case 12: + case 8: + case 4: + break; + default: + return -EINVAL; + } + return 0; } static int ccp_aes_gcm_crypt(struct aead_request *req, bool encrypt) { struct crypto_aead *tfm = crypto_aead_reqtfm(req); - struct ccp_ctx *ctx = crypto_aead_ctx(tfm); - struct ccp_aes_req_ctx *rctx = aead_request_ctx(req); + struct ccp_ctx *ctx = crypto_aead_ctx_dma(tfm); + struct ccp_aes_req_ctx *rctx = aead_request_ctx_dma(req); struct scatterlist *iv_sg = NULL; unsigned int iv_len = 0; int i; @@ -107,6 +116,7 @@ static int ccp_aes_gcm_crypt(struct aead_request *req, bool encrypt) memset(&rctx->cmd, 0, sizeof(rctx->cmd)); INIT_LIST_HEAD(&rctx->cmd.entry); rctx->cmd.engine = CCP_ENGINE_AES; + rctx->cmd.u.aes.authsize = crypto_aead_authsize(tfm); rctx->cmd.u.aes.type = ctx->u.aes.type; rctx->cmd.u.aes.mode = ctx->u.aes.mode; rctx->cmd.u.aes.action = encrypt; @@ -138,12 +148,12 @@ static int ccp_aes_gcm_decrypt(struct aead_request *req) static int ccp_aes_gcm_cra_init(struct crypto_aead *tfm) { - struct ccp_ctx *ctx = crypto_aead_ctx(tfm); + struct ccp_ctx *ctx = crypto_aead_ctx_dma(tfm); ctx->complete = ccp_aes_gcm_complete; ctx->u.aes.key_len = 0; - crypto_aead_set_reqsize(tfm, sizeof(struct ccp_aes_req_ctx)); + crypto_aead_set_reqsize_dma(tfm, sizeof(struct ccp_aes_req_ctx)); return 0; } @@ -161,14 +171,13 @@ static struct aead_alg ccp_aes_gcm_defaults = { .ivsize = GCM_AES_IV_SIZE, .maxauthsize = AES_BLOCK_SIZE, .base = { - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | - CRYPTO_ALG_ASYNC | + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY | CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_NEED_FALLBACK, .cra_blocksize = AES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct ccp_ctx), + .cra_ctxsize = sizeof(struct ccp_ctx) + CRYPTO_DMA_PADDING, .cra_priority = CCP_CRA_PRIORITY, - .cra_type = &crypto_ablkcipher_type, .cra_exit = ccp_aes_gcm_cra_exit, .cra_module = THIS_MODULE, }, @@ -218,11 +227,10 @@ static int ccp_register_aes_aead(struct list_head *head, snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", def->driver_name); alg->base.cra_blocksize = def->blocksize; - alg->base.cra_ablkcipher.ivsize = def->ivsize; ret = crypto_register_aead(alg); if (ret) { - pr_err("%s ablkcipher algorithm registration error (%d)\n", + pr_err("%s aead algorithm registration error (%d)\n", alg->base.cra_name, ret); kfree(ccp_aead); return ret; |