ipq40xx: qce - switch to skcipher API
This backports a commit updating the API of the QCE crypto engine to what is used in current kerenl, easing future upstream backports. Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com> [renumber patches, refreshed, added 5.4 patches] Signed-off-by: Christian Lamparter <chunkeey@gmail.com>master
Eneas U de Queiroz
4 years ago
committed by
Christian Lamparter
parent
ce691b2abc
commit
26681de412
@ -0,0 +1,973 @@
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From f441873642eebf20566c18d2966a8cd4b433ec1c Mon Sep 17 00:00:00 2001
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From: Ard Biesheuvel <ardb@kernel.org>
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Date: Tue, 5 Nov 2019 14:28:17 +0100
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Subject: [PATCH] crypto: qce - switch to skcipher API
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Commit 7a7ffe65c8c5 ("crypto: skcipher - Add top-level skcipher interface")
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dated 20 august 2015 introduced the new skcipher API which is supposed to
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replace both blkcipher and ablkcipher. While all consumers of the API have
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been converted long ago, some producers of the ablkcipher remain, forcing
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us to keep the ablkcipher support routines alive, along with the matching
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code to expose [a]blkciphers via the skcipher API.
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So switch this driver to the skcipher API, allowing us to finally drop the
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blkcipher code in the near future.
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Reviewed-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
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Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
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Backported-to-4.19-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
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--- a/drivers/crypto/qce/Makefile
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+++ b/drivers/crypto/qce/Makefile
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@@ -4,4 +4,4 @@ qcrypto-objs := core.o \
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common.o \
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dma.o \
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sha.o \
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- ablkcipher.o
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+ skcipher.o
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--- a/drivers/crypto/qce/cipher.h
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+++ b/drivers/crypto/qce/cipher.h
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@@ -53,12 +53,12 @@ struct qce_cipher_reqctx {
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unsigned int cryptlen;
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};
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-static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_tfm *tfm)
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+static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_skcipher *tfm)
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{
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- struct crypto_alg *alg = tfm->__crt_alg;
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- return container_of(alg, struct qce_alg_template, alg.crypto);
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+ struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
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+ return container_of(alg, struct qce_alg_template, alg.skcipher);
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}
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-extern const struct qce_algo_ops ablkcipher_ops;
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+extern const struct qce_algo_ops skcipher_ops;
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#endif /* _CIPHER_H_ */
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--- a/drivers/crypto/qce/common.c
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+++ b/drivers/crypto/qce/common.c
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@@ -312,13 +312,13 @@ go_proc:
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return 0;
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}
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-static int qce_setup_regs_ablkcipher(struct crypto_async_request *async_req,
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+static int qce_setup_regs_skcipher(struct crypto_async_request *async_req,
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u32 totallen, u32 offset)
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{
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- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
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- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
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+ struct skcipher_request *req = skcipher_request_cast(async_req);
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+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
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struct qce_cipher_ctx *ctx = crypto_tfm_ctx(async_req->tfm);
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- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
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+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
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struct qce_device *qce = tmpl->qce;
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__be32 enckey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(__be32)] = {0};
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__be32 enciv[QCE_MAX_IV_SIZE / sizeof(__be32)] = {0};
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@@ -397,8 +397,8 @@ int qce_start(struct crypto_async_reques
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u32 offset)
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{
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switch (type) {
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- case CRYPTO_ALG_TYPE_ABLKCIPHER:
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- return qce_setup_regs_ablkcipher(async_req, totallen, offset);
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+ case CRYPTO_ALG_TYPE_SKCIPHER:
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+ return qce_setup_regs_skcipher(async_req, totallen, offset);
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case CRYPTO_ALG_TYPE_AHASH:
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return qce_setup_regs_ahash(async_req, totallen, offset);
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default:
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--- a/drivers/crypto/qce/common.h
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+++ b/drivers/crypto/qce/common.h
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@@ -18,6 +18,7 @@
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#include <linux/types.h>
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#include <crypto/aes.h>
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#include <crypto/hash.h>
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+#include <crypto/internal/skcipher.h>
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/* key size in bytes */
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#define QCE_SHA_HMAC_KEY_SIZE 64
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@@ -87,7 +88,7 @@ struct qce_alg_template {
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unsigned long alg_flags;
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const u32 *std_iv;
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union {
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- struct crypto_alg crypto;
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+ struct skcipher_alg skcipher;
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struct ahash_alg ahash;
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} alg;
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struct qce_device *qce;
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--- a/drivers/crypto/qce/core.c
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+++ b/drivers/crypto/qce/core.c
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@@ -30,7 +30,7 @@
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#define QCE_QUEUE_LENGTH 1
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static const struct qce_algo_ops *qce_ops[] = {
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- &ablkcipher_ops,
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+ &skcipher_ops,
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&ahash_ops,
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};
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--- a/drivers/crypto/qce/ablkcipher.c
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+++ /dev/null
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@@ -1,431 +0,0 @@
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-/*
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- * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 and
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- * only version 2 as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU General Public License for more details.
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- */
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-
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-#include <linux/device.h>
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-#include <linux/interrupt.h>
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-#include <linux/types.h>
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-#include <crypto/aes.h>
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-#include <crypto/des.h>
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-#include <crypto/internal/skcipher.h>
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-
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-#include "cipher.h"
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-
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-static LIST_HEAD(ablkcipher_algs);
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-
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-static void qce_ablkcipher_done(void *data)
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-{
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- struct crypto_async_request *async_req = data;
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- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
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- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
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- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
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- struct qce_device *qce = tmpl->qce;
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- enum dma_data_direction dir_src, dir_dst;
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- u32 status;
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- int error;
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- bool diff_dst;
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-
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- diff_dst = (req->src != req->dst) ? true : false;
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- dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
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- dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
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-
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- error = qce_dma_terminate_all(&qce->dma);
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- if (error)
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- dev_dbg(qce->dev, "ablkcipher dma termination error (%d)\n",
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- error);
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-
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- if (diff_dst)
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- dma_unmap_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src);
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- dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
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-
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- sg_free_table(&rctx->dst_tbl);
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-
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- error = qce_check_status(qce, &status);
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- if (error < 0)
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- dev_dbg(qce->dev, "ablkcipher operation error (%x)\n", status);
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-
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- qce->async_req_done(tmpl->qce, error);
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-}
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-
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-static int
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-qce_ablkcipher_async_req_handle(struct crypto_async_request *async_req)
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-{
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- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
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- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
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- struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
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- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
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- struct qce_device *qce = tmpl->qce;
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- enum dma_data_direction dir_src, dir_dst;
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- struct scatterlist *sg;
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- bool diff_dst;
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- gfp_t gfp;
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- int ret;
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-
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- rctx->iv = req->info;
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- rctx->ivsize = crypto_ablkcipher_ivsize(ablkcipher);
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- rctx->cryptlen = req->nbytes;
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-
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- diff_dst = (req->src != req->dst) ? true : false;
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- dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
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- dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
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-
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- rctx->src_nents = sg_nents_for_len(req->src, req->nbytes);
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- if (diff_dst)
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- rctx->dst_nents = sg_nents_for_len(req->dst, req->nbytes);
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- else
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- rctx->dst_nents = rctx->src_nents;
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- if (rctx->src_nents < 0) {
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- dev_err(qce->dev, "Invalid numbers of src SG.\n");
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- return rctx->src_nents;
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- }
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- if (rctx->dst_nents < 0) {
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- dev_err(qce->dev, "Invalid numbers of dst SG.\n");
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- return -rctx->dst_nents;
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- }
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-
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- rctx->dst_nents += 1;
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-
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- gfp = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
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- GFP_KERNEL : GFP_ATOMIC;
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-
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- ret = sg_alloc_table(&rctx->dst_tbl, rctx->dst_nents, gfp);
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- if (ret)
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- return ret;
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-
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- sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ);
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-
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- sg = qce_sgtable_add(&rctx->dst_tbl, req->dst);
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- if (IS_ERR(sg)) {
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- ret = PTR_ERR(sg);
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- goto error_free;
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- }
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-
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- sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->result_sg);
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- if (IS_ERR(sg)) {
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- ret = PTR_ERR(sg);
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- goto error_free;
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- }
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-
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- sg_mark_end(sg);
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- rctx->dst_sg = rctx->dst_tbl.sgl;
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-
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- ret = dma_map_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
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- if (ret < 0)
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- goto error_free;
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-
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- if (diff_dst) {
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- ret = dma_map_sg(qce->dev, req->src, rctx->src_nents, dir_src);
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- if (ret < 0)
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- goto error_unmap_dst;
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- rctx->src_sg = req->src;
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- } else {
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- rctx->src_sg = rctx->dst_sg;
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- }
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-
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- ret = qce_dma_prep_sgs(&qce->dma, rctx->src_sg, rctx->src_nents,
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- rctx->dst_sg, rctx->dst_nents,
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- qce_ablkcipher_done, async_req);
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- if (ret)
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- goto error_unmap_src;
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-
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- qce_dma_issue_pending(&qce->dma);
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-
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- ret = qce_start(async_req, tmpl->crypto_alg_type, req->nbytes, 0);
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- if (ret)
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- goto error_terminate;
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-
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- return 0;
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-
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-error_terminate:
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- qce_dma_terminate_all(&qce->dma);
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-error_unmap_src:
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- if (diff_dst)
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- dma_unmap_sg(qce->dev, req->src, rctx->src_nents, dir_src);
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-error_unmap_dst:
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- dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
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-error_free:
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- sg_free_table(&rctx->dst_tbl);
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- return ret;
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-}
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-
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-static int qce_ablkcipher_setkey(struct crypto_ablkcipher *ablk, const u8 *key,
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- unsigned int keylen)
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-{
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- struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk);
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- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
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- unsigned long flags = to_cipher_tmpl(tfm)->alg_flags;
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- int ret;
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-
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- if (!key || !keylen)
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- return -EINVAL;
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-
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- if (IS_AES(flags)) {
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- switch (keylen) {
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- case AES_KEYSIZE_128:
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- case AES_KEYSIZE_256:
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- break;
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- default:
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- goto fallback;
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- }
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- } else if (IS_DES(flags)) {
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- u32 tmp[DES_EXPKEY_WORDS];
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-
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- ret = des_ekey(tmp, key);
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- if (!ret && crypto_ablkcipher_get_flags(ablk) &
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- CRYPTO_TFM_REQ_WEAK_KEY)
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- goto weakkey;
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- }
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-
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- ctx->enc_keylen = keylen;
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- memcpy(ctx->enc_key, key, keylen);
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- return 0;
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-fallback:
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- ret = crypto_skcipher_setkey(ctx->fallback, key, keylen);
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- if (!ret)
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- ctx->enc_keylen = keylen;
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- return ret;
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-weakkey:
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- crypto_ablkcipher_set_flags(ablk, CRYPTO_TFM_RES_WEAK_KEY);
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- return -EINVAL;
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-}
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-
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-static int qce_ablkcipher_crypt(struct ablkcipher_request *req, int encrypt)
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-{
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- struct crypto_tfm *tfm =
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- crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req));
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- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
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- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
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- struct qce_alg_template *tmpl = to_cipher_tmpl(tfm);
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- int ret;
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-
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- rctx->flags = tmpl->alg_flags;
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- rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT;
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-
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- if (IS_AES(rctx->flags) && ctx->enc_keylen != AES_KEYSIZE_128 &&
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- ctx->enc_keylen != AES_KEYSIZE_256) {
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- SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
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-
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- skcipher_request_set_tfm(subreq, ctx->fallback);
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- skcipher_request_set_callback(subreq, req->base.flags,
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- NULL, NULL);
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- skcipher_request_set_crypt(subreq, req->src, req->dst,
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- req->nbytes, req->info);
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- ret = encrypt ? crypto_skcipher_encrypt(subreq) :
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- crypto_skcipher_decrypt(subreq);
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- skcipher_request_zero(subreq);
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- return ret;
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- }
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-
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- return tmpl->qce->async_req_enqueue(tmpl->qce, &req->base);
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-}
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-
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-static int qce_ablkcipher_encrypt(struct ablkcipher_request *req)
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-{
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- return qce_ablkcipher_crypt(req, 1);
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-}
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-
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-static int qce_ablkcipher_decrypt(struct ablkcipher_request *req)
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-{
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- return qce_ablkcipher_crypt(req, 0);
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-}
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-
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-static int qce_ablkcipher_init(struct crypto_tfm *tfm)
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-{
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- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
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-
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- memset(ctx, 0, sizeof(*ctx));
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- tfm->crt_ablkcipher.reqsize = sizeof(struct qce_cipher_reqctx);
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-
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- ctx->fallback = crypto_alloc_skcipher(crypto_tfm_alg_name(tfm), 0,
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- CRYPTO_ALG_ASYNC |
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- CRYPTO_ALG_NEED_FALLBACK);
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- return PTR_ERR_OR_ZERO(ctx->fallback);
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-}
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-
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-static void qce_ablkcipher_exit(struct crypto_tfm *tfm)
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-{
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- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
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-
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- crypto_free_skcipher(ctx->fallback);
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-}
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-
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-struct qce_ablkcipher_def {
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- unsigned long flags;
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- const char *name;
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- const char *drv_name;
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- unsigned int blocksize;
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- unsigned int ivsize;
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- unsigned int min_keysize;
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- unsigned int max_keysize;
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-};
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-
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-static const struct qce_ablkcipher_def ablkcipher_def[] = {
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- {
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- .flags = QCE_ALG_AES | QCE_MODE_ECB,
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- .name = "ecb(aes)",
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- .drv_name = "ecb-aes-qce",
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- .blocksize = AES_BLOCK_SIZE,
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- .ivsize = AES_BLOCK_SIZE,
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- .min_keysize = AES_MIN_KEY_SIZE,
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- .max_keysize = AES_MAX_KEY_SIZE,
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- },
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- {
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- .flags = QCE_ALG_AES | QCE_MODE_CBC,
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- .name = "cbc(aes)",
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- .drv_name = "cbc-aes-qce",
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- .blocksize = AES_BLOCK_SIZE,
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- .ivsize = AES_BLOCK_SIZE,
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- .min_keysize = AES_MIN_KEY_SIZE,
|
||||
- .max_keysize = AES_MAX_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_AES | QCE_MODE_CTR,
|
||||
- .name = "ctr(aes)",
|
||||
- .drv_name = "ctr-aes-qce",
|
||||
- .blocksize = AES_BLOCK_SIZE,
|
||||
- .ivsize = AES_BLOCK_SIZE,
|
||||
- .min_keysize = AES_MIN_KEY_SIZE,
|
||||
- .max_keysize = AES_MAX_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_AES | QCE_MODE_XTS,
|
||||
- .name = "xts(aes)",
|
||||
- .drv_name = "xts-aes-qce",
|
||||
- .blocksize = AES_BLOCK_SIZE,
|
||||
- .ivsize = AES_BLOCK_SIZE,
|
||||
- .min_keysize = AES_MIN_KEY_SIZE,
|
||||
- .max_keysize = AES_MAX_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_DES | QCE_MODE_ECB,
|
||||
- .name = "ecb(des)",
|
||||
- .drv_name = "ecb-des-qce",
|
||||
- .blocksize = DES_BLOCK_SIZE,
|
||||
- .ivsize = 0,
|
||||
- .min_keysize = DES_KEY_SIZE,
|
||||
- .max_keysize = DES_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_DES | QCE_MODE_CBC,
|
||||
- .name = "cbc(des)",
|
||||
- .drv_name = "cbc-des-qce",
|
||||
- .blocksize = DES_BLOCK_SIZE,
|
||||
- .ivsize = DES_BLOCK_SIZE,
|
||||
- .min_keysize = DES_KEY_SIZE,
|
||||
- .max_keysize = DES_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_3DES | QCE_MODE_ECB,
|
||||
- .name = "ecb(des3_ede)",
|
||||
- .drv_name = "ecb-3des-qce",
|
||||
- .blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
- .ivsize = 0,
|
||||
- .min_keysize = DES3_EDE_KEY_SIZE,
|
||||
- .max_keysize = DES3_EDE_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_3DES | QCE_MODE_CBC,
|
||||
- .name = "cbc(des3_ede)",
|
||||
- .drv_name = "cbc-3des-qce",
|
||||
- .blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
- .ivsize = DES3_EDE_BLOCK_SIZE,
|
||||
- .min_keysize = DES3_EDE_KEY_SIZE,
|
||||
- .max_keysize = DES3_EDE_KEY_SIZE,
|
||||
- },
|
||||
-};
|
||||
-
|
||||
-static int qce_ablkcipher_register_one(const struct qce_ablkcipher_def *def,
|
||||
- struct qce_device *qce)
|
||||
-{
|
||||
- struct qce_alg_template *tmpl;
|
||||
- struct crypto_alg *alg;
|
||||
- int ret;
|
||||
-
|
||||
- tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL);
|
||||
- if (!tmpl)
|
||||
- return -ENOMEM;
|
||||
-
|
||||
- alg = &tmpl->alg.crypto;
|
||||
-
|
||||
- snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
|
||||
- snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
|
||||
- def->drv_name);
|
||||
-
|
||||
- alg->cra_blocksize = def->blocksize;
|
||||
- alg->cra_ablkcipher.ivsize = def->ivsize;
|
||||
- alg->cra_ablkcipher.min_keysize = def->min_keysize;
|
||||
- alg->cra_ablkcipher.max_keysize = def->max_keysize;
|
||||
- alg->cra_ablkcipher.setkey = qce_ablkcipher_setkey;
|
||||
- alg->cra_ablkcipher.encrypt = qce_ablkcipher_encrypt;
|
||||
- alg->cra_ablkcipher.decrypt = qce_ablkcipher_decrypt;
|
||||
-
|
||||
- alg->cra_priority = 300;
|
||||
- alg->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
|
||||
- CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_KERN_DRIVER_ONLY;
|
||||
- alg->cra_ctxsize = sizeof(struct qce_cipher_ctx);
|
||||
- alg->cra_alignmask = 0;
|
||||
- alg->cra_type = &crypto_ablkcipher_type;
|
||||
- alg->cra_module = THIS_MODULE;
|
||||
- alg->cra_init = qce_ablkcipher_init;
|
||||
- alg->cra_exit = qce_ablkcipher_exit;
|
||||
- INIT_LIST_HEAD(&alg->cra_list);
|
||||
-
|
||||
- INIT_LIST_HEAD(&tmpl->entry);
|
||||
- tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_ABLKCIPHER;
|
||||
- tmpl->alg_flags = def->flags;
|
||||
- tmpl->qce = qce;
|
||||
-
|
||||
- ret = crypto_register_alg(alg);
|
||||
- if (ret) {
|
||||
- kfree(tmpl);
|
||||
- dev_err(qce->dev, "%s registration failed\n", alg->cra_name);
|
||||
- return ret;
|
||||
- }
|
||||
-
|
||||
- list_add_tail(&tmpl->entry, &ablkcipher_algs);
|
||||
- dev_dbg(qce->dev, "%s is registered\n", alg->cra_name);
|
||||
- return 0;
|
||||
-}
|
||||
-
|
||||
-static void qce_ablkcipher_unregister(struct qce_device *qce)
|
||||
-{
|
||||
- struct qce_alg_template *tmpl, *n;
|
||||
-
|
||||
- list_for_each_entry_safe(tmpl, n, &ablkcipher_algs, entry) {
|
||||
- crypto_unregister_alg(&tmpl->alg.crypto);
|
||||
- list_del(&tmpl->entry);
|
||||
- kfree(tmpl);
|
||||
- }
|
||||
-}
|
||||
-
|
||||
-static int qce_ablkcipher_register(struct qce_device *qce)
|
||||
-{
|
||||
- int ret, i;
|
||||
-
|
||||
- for (i = 0; i < ARRAY_SIZE(ablkcipher_def); i++) {
|
||||
- ret = qce_ablkcipher_register_one(&ablkcipher_def[i], qce);
|
||||
- if (ret)
|
||||
- goto err;
|
||||
- }
|
||||
-
|
||||
- return 0;
|
||||
-err:
|
||||
- qce_ablkcipher_unregister(qce);
|
||||
- return ret;
|
||||
-}
|
||||
-
|
||||
-const struct qce_algo_ops ablkcipher_ops = {
|
||||
- .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
||||
- .register_algs = qce_ablkcipher_register,
|
||||
- .unregister_algs = qce_ablkcipher_unregister,
|
||||
- .async_req_handle = qce_ablkcipher_async_req_handle,
|
||||
-};
|
||||
--- /dev/null
|
||||
+++ b/drivers/crypto/qce/skcipher.c
|
||||
@@ -0,0 +1,429 @@
|
||||
+/*
|
||||
+ * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
|
||||
+ *
|
||||
+ * This program is free software; you can redistribute it and/or modify
|
||||
+ * it under the terms of the GNU General Public License version 2 and
|
||||
+ * only version 2 as published by the Free Software Foundation.
|
||||
+ *
|
||||
+ * This program is distributed in the hope that it will be useful,
|
||||
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
+ * GNU General Public License for more details.
|
||||
+ */
|
||||
+
|
||||
+#include <linux/device.h>
|
||||
+#include <linux/interrupt.h>
|
||||
+#include <linux/types.h>
|
||||
+#include <crypto/aes.h>
|
||||
+#include <crypto/des.h>
|
||||
+#include <crypto/internal/skcipher.h>
|
||||
+
|
||||
+#include "cipher.h"
|
||||
+
|
||||
+static LIST_HEAD(skcipher_algs);
|
||||
+
|
||||
+static void qce_skcipher_done(void *data)
|
||||
+{
|
||||
+ struct crypto_async_request *async_req = data;
|
||||
+ struct skcipher_request *req = skcipher_request_cast(async_req);
|
||||
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
|
||||
+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
|
||||
+ struct qce_device *qce = tmpl->qce;
|
||||
+ enum dma_data_direction dir_src, dir_dst;
|
||||
+ u32 status;
|
||||
+ int error;
|
||||
+ bool diff_dst;
|
||||
+
|
||||
+ diff_dst = (req->src != req->dst) ? true : false;
|
||||
+ dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
|
||||
+ dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
|
||||
+
|
||||
+ error = qce_dma_terminate_all(&qce->dma);
|
||||
+ if (error)
|
||||
+ dev_dbg(qce->dev, "skcipher dma termination error (%d)\n",
|
||||
+ error);
|
||||
+
|
||||
+ if (diff_dst)
|
||||
+ dma_unmap_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src);
|
||||
+ dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
+
|
||||
+ sg_free_table(&rctx->dst_tbl);
|
||||
+
|
||||
+ error = qce_check_status(qce, &status);
|
||||
+ if (error < 0)
|
||||
+ dev_dbg(qce->dev, "skcipher operation error (%x)\n", status);
|
||||
+
|
||||
+ qce->async_req_done(tmpl->qce, error);
|
||||
+}
|
||||
+
|
||||
+static int
|
||||
+qce_skcipher_async_req_handle(struct crypto_async_request *async_req)
|
||||
+{
|
||||
+ struct skcipher_request *req = skcipher_request_cast(async_req);
|
||||
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
|
||||
+ struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
|
||||
+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
|
||||
+ struct qce_device *qce = tmpl->qce;
|
||||
+ enum dma_data_direction dir_src, dir_dst;
|
||||
+ struct scatterlist *sg;
|
||||
+ bool diff_dst;
|
||||
+ gfp_t gfp;
|
||||
+ int ret;
|
||||
+
|
||||
+ rctx->iv = req->iv;
|
||||
+ rctx->ivsize = crypto_skcipher_ivsize(skcipher);
|
||||
+ rctx->cryptlen = req->cryptlen;
|
||||
+
|
||||
+ diff_dst = (req->src != req->dst) ? true : false;
|
||||
+ dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
|
||||
+ dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
|
||||
+
|
||||
+ rctx->src_nents = sg_nents_for_len(req->src, req->cryptlen);
|
||||
+ if (diff_dst)
|
||||
+ rctx->dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
|
||||
+ else
|
||||
+ rctx->dst_nents = rctx->src_nents;
|
||||
+ if (rctx->src_nents < 0) {
|
||||
+ dev_err(qce->dev, "Invalid numbers of src SG.\n");
|
||||
+ return rctx->src_nents;
|
||||
+ }
|
||||
+ if (rctx->dst_nents < 0) {
|
||||
+ dev_err(qce->dev, "Invalid numbers of dst SG.\n");
|
||||
+ return -rctx->dst_nents;
|
||||
+ }
|
||||
+
|
||||
+ rctx->dst_nents += 1;
|
||||
+
|
||||
+ gfp = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
|
||||
+ GFP_KERNEL : GFP_ATOMIC;
|
||||
+
|
||||
+ ret = sg_alloc_table(&rctx->dst_tbl, rctx->dst_nents, gfp);
|
||||
+ if (ret)
|
||||
+ return ret;
|
||||
+
|
||||
+ sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ);
|
||||
+
|
||||
+ sg = qce_sgtable_add(&rctx->dst_tbl, req->dst);
|
||||
+ if (IS_ERR(sg)) {
|
||||
+ ret = PTR_ERR(sg);
|
||||
+ goto error_free;
|
||||
+ }
|
||||
+
|
||||
+ sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->result_sg);
|
||||
+ if (IS_ERR(sg)) {
|
||||
+ ret = PTR_ERR(sg);
|
||||
+ goto error_free;
|
||||
+ }
|
||||
+
|
||||
+ sg_mark_end(sg);
|
||||
+ rctx->dst_sg = rctx->dst_tbl.sgl;
|
||||
+
|
||||
+ ret = dma_map_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
+ if (ret < 0)
|
||||
+ goto error_free;
|
||||
+
|
||||
+ if (diff_dst) {
|
||||
+ ret = dma_map_sg(qce->dev, req->src, rctx->src_nents, dir_src);
|
||||
+ if (ret < 0)
|
||||
+ goto error_unmap_dst;
|
||||
+ rctx->src_sg = req->src;
|
||||
+ } else {
|
||||
+ rctx->src_sg = rctx->dst_sg;
|
||||
+ }
|
||||
+
|
||||
+ ret = qce_dma_prep_sgs(&qce->dma, rctx->src_sg, rctx->src_nents,
|
||||
+ rctx->dst_sg, rctx->dst_nents,
|
||||
+ qce_skcipher_done, async_req);
|
||||
+ if (ret)
|
||||
+ goto error_unmap_src;
|
||||
+
|
||||
+ qce_dma_issue_pending(&qce->dma);
|
||||
+
|
||||
+ ret = qce_start(async_req, tmpl->crypto_alg_type, req->cryptlen, 0);
|
||||
+ if (ret)
|
||||
+ goto error_terminate;
|
||||
+
|
||||
+ return 0;
|
||||
+
|
||||
+error_terminate:
|
||||
+ qce_dma_terminate_all(&qce->dma);
|
||||
+error_unmap_src:
|
||||
+ if (diff_dst)
|
||||
+ dma_unmap_sg(qce->dev, req->src, rctx->src_nents, dir_src);
|
||||
+error_unmap_dst:
|
||||
+ dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
+error_free:
|
||||
+ sg_free_table(&rctx->dst_tbl);
|
||||
+ return ret;
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_setkey(struct crypto_skcipher *ablk, const u8 *key,
|
||||
+ unsigned int keylen)
|
||||
+{
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(ablk);
|
||||
+ unsigned long flags = to_cipher_tmpl(ablk)->alg_flags;
|
||||
+ int ret;
|
||||
+
|
||||
+ if (!key || !keylen)
|
||||
+ return -EINVAL;
|
||||
+
|
||||
+ if (IS_AES(flags)) {
|
||||
+ switch (keylen) {
|
||||
+ case AES_KEYSIZE_128:
|
||||
+ case AES_KEYSIZE_256:
|
||||
+ break;
|
||||
+ default:
|
||||
+ goto fallback;
|
||||
+ }
|
||||
+ } else if (IS_DES(flags)) {
|
||||
+ u32 tmp[DES_EXPKEY_WORDS];
|
||||
+
|
||||
+ ret = des_ekey(tmp, key);
|
||||
+ if (!ret && crypto_skcipher_get_flags(ablk) &
|
||||
+ CRYPTO_TFM_REQ_WEAK_KEY)
|
||||
+ goto weakkey;
|
||||
+ }
|
||||
+
|
||||
+ ctx->enc_keylen = keylen;
|
||||
+ memcpy(ctx->enc_key, key, keylen);
|
||||
+ return 0;
|
||||
+fallback:
|
||||
+ ret = crypto_skcipher_setkey(ctx->fallback, key, keylen);
|
||||
+ if (!ret)
|
||||
+ ctx->enc_keylen = keylen;
|
||||
+ return ret;
|
||||
+weakkey:
|
||||
+ crypto_skcipher_set_flags(ablk, CRYPTO_TFM_RES_WEAK_KEY);
|
||||
+ return -EINVAL;
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_crypt(struct skcipher_request *req, int encrypt)
|
||||
+{
|
||||
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
|
||||
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
|
||||
+ struct qce_alg_template *tmpl = to_cipher_tmpl(tfm);
|
||||
+ int ret;
|
||||
+
|
||||
+ rctx->flags = tmpl->alg_flags;
|
||||
+ rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT;
|
||||
+
|
||||
+ if (IS_AES(rctx->flags) && ctx->enc_keylen != AES_KEYSIZE_128 &&
|
||||
+ ctx->enc_keylen != AES_KEYSIZE_256) {
|
||||
+ SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
|
||||
+
|
||||
+ skcipher_request_set_tfm(subreq, ctx->fallback);
|
||||
+ skcipher_request_set_callback(subreq, req->base.flags,
|
||||
+ NULL, NULL);
|
||||
+ skcipher_request_set_crypt(subreq, req->src, req->dst,
|
||||
+ req->cryptlen, req->iv);
|
||||
+ ret = encrypt ? crypto_skcipher_encrypt(subreq) :
|
||||
+ crypto_skcipher_decrypt(subreq);
|
||||
+ skcipher_request_zero(subreq);
|
||||
+ return ret;
|
||||
+ }
|
||||
+
|
||||
+ return tmpl->qce->async_req_enqueue(tmpl->qce, &req->base);
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_encrypt(struct skcipher_request *req)
|
||||
+{
|
||||
+ return qce_skcipher_crypt(req, 1);
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_decrypt(struct skcipher_request *req)
|
||||
+{
|
||||
+ return qce_skcipher_crypt(req, 0);
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_init(struct crypto_skcipher *tfm)
|
||||
+{
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
|
||||
+
|
||||
+ memset(ctx, 0, sizeof(*ctx));
|
||||
+ crypto_skcipher_set_reqsize(tfm, sizeof(struct qce_cipher_reqctx));
|
||||
+
|
||||
+ ctx->fallback = crypto_alloc_skcipher(crypto_tfm_alg_name(&tfm->base),
|
||||
+ 0, CRYPTO_ALG_ASYNC |
|
||||
+ CRYPTO_ALG_NEED_FALLBACK);
|
||||
+ return PTR_ERR_OR_ZERO(ctx->fallback);
|
||||
+}
|
||||
+
|
||||
+static void qce_skcipher_exit(struct crypto_skcipher *tfm)
|
||||
+{
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
|
||||
+
|
||||
+ crypto_free_skcipher(ctx->fallback);
|
||||
+}
|
||||
+
|
||||
+struct qce_skcipher_def {
|
||||
+ unsigned long flags;
|
||||
+ const char *name;
|
||||
+ const char *drv_name;
|
||||
+ unsigned int blocksize;
|
||||
+ unsigned int ivsize;
|
||||
+ unsigned int min_keysize;
|
||||
+ unsigned int max_keysize;
|
||||
+};
|
||||
+
|
||||
+static const struct qce_skcipher_def skcipher_def[] = {
|
||||
+ {
|
||||
+ .flags = QCE_ALG_AES | QCE_MODE_ECB,
|
||||
+ .name = "ecb(aes)",
|
||||
+ .drv_name = "ecb-aes-qce",
|
||||
+ .blocksize = AES_BLOCK_SIZE,
|
||||
+ .ivsize = AES_BLOCK_SIZE,
|
||||
+ .min_keysize = AES_MIN_KEY_SIZE,
|
||||
+ .max_keysize = AES_MAX_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_AES | QCE_MODE_CBC,
|
||||
+ .name = "cbc(aes)",
|
||||
+ .drv_name = "cbc-aes-qce",
|
||||
+ .blocksize = AES_BLOCK_SIZE,
|
||||
+ .ivsize = AES_BLOCK_SIZE,
|
||||
+ .min_keysize = AES_MIN_KEY_SIZE,
|
||||
+ .max_keysize = AES_MAX_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_AES | QCE_MODE_CTR,
|
||||
+ .name = "ctr(aes)",
|
||||
+ .drv_name = "ctr-aes-qce",
|
||||
+ .blocksize = AES_BLOCK_SIZE,
|
||||
+ .ivsize = AES_BLOCK_SIZE,
|
||||
+ .min_keysize = AES_MIN_KEY_SIZE,
|
||||
+ .max_keysize = AES_MAX_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_AES | QCE_MODE_XTS,
|
||||
+ .name = "xts(aes)",
|
||||
+ .drv_name = "xts-aes-qce",
|
||||
+ .blocksize = AES_BLOCK_SIZE,
|
||||
+ .ivsize = AES_BLOCK_SIZE,
|
||||
+ .min_keysize = AES_MIN_KEY_SIZE,
|
||||
+ .max_keysize = AES_MAX_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_DES | QCE_MODE_ECB,
|
||||
+ .name = "ecb(des)",
|
||||
+ .drv_name = "ecb-des-qce",
|
||||
+ .blocksize = DES_BLOCK_SIZE,
|
||||
+ .ivsize = 0,
|
||||
+ .min_keysize = DES_KEY_SIZE,
|
||||
+ .max_keysize = DES_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_DES | QCE_MODE_CBC,
|
||||
+ .name = "cbc(des)",
|
||||
+ .drv_name = "cbc-des-qce",
|
||||
+ .blocksize = DES_BLOCK_SIZE,
|
||||
+ .ivsize = DES_BLOCK_SIZE,
|
||||
+ .min_keysize = DES_KEY_SIZE,
|
||||
+ .max_keysize = DES_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_3DES | QCE_MODE_ECB,
|
||||
+ .name = "ecb(des3_ede)",
|
||||
+ .drv_name = "ecb-3des-qce",
|
||||
+ .blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
+ .ivsize = 0,
|
||||
+ .min_keysize = DES3_EDE_KEY_SIZE,
|
||||
+ .max_keysize = DES3_EDE_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_3DES | QCE_MODE_CBC,
|
||||
+ .name = "cbc(des3_ede)",
|
||||
+ .drv_name = "cbc-3des-qce",
|
||||
+ .blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
+ .ivsize = DES3_EDE_BLOCK_SIZE,
|
||||
+ .min_keysize = DES3_EDE_KEY_SIZE,
|
||||
+ .max_keysize = DES3_EDE_KEY_SIZE,
|
||||
+ },
|
||||
+};
|
||||
+
|
||||
+static int qce_skcipher_register_one(const struct qce_skcipher_def *def,
|
||||
+ struct qce_device *qce)
|
||||
+{
|
||||
+ struct qce_alg_template *tmpl;
|
||||
+ struct skcipher_alg *alg;
|
||||
+ int ret;
|
||||
+
|
||||
+ tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL);
|
||||
+ if (!tmpl)
|
||||
+ return -ENOMEM;
|
||||
+
|
||||
+ alg = &tmpl->alg.skcipher;
|
||||
+
|
||||
+ snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
|
||||
+ snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
|
||||
+ def->drv_name);
|
||||
+
|
||||
+ alg->base.cra_blocksize = def->blocksize;
|
||||
+ alg->ivsize = def->ivsize;
|
||||
+ alg->min_keysize = def->min_keysize;
|
||||
+ alg->max_keysize = def->max_keysize;
|
||||
+ alg->setkey = qce_skcipher_setkey;
|
||||
+ alg->encrypt = qce_skcipher_encrypt;
|
||||
+ alg->decrypt = qce_skcipher_decrypt;
|
||||
+
|
||||
+ alg->base.cra_priority = 300;
|
||||
+ alg->base.cra_flags = CRYPTO_ALG_ASYNC |
|
||||
+ CRYPTO_ALG_NEED_FALLBACK |
|
||||
+ CRYPTO_ALG_KERN_DRIVER_ONLY;
|
||||
+ alg->base.cra_ctxsize = sizeof(struct qce_cipher_ctx);
|
||||
+ alg->base.cra_alignmask = 0;
|
||||
+ alg->base.cra_module = THIS_MODULE;
|
||||
+
|
||||
+ alg->init = qce_skcipher_init;
|
||||
+ alg->exit = qce_skcipher_exit;
|
||||
+
|
||||
+ INIT_LIST_HEAD(&tmpl->entry);
|
||||
+ tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_SKCIPHER;
|
||||
+ tmpl->alg_flags = def->flags;
|
||||
+ tmpl->qce = qce;
|
||||
+
|
||||
+ ret = crypto_register_skcipher(alg);
|
||||
+ if (ret) {
|
||||
+ kfree(tmpl);
|
||||
+ dev_err(qce->dev, "%s registration failed\n", alg->base.cra_name);
|
||||
+ return ret;
|
||||
+ }
|
||||
+
|
||||
+ list_add_tail(&tmpl->entry, &skcipher_algs);
|
||||
+ dev_dbg(qce->dev, "%s is registered\n", alg->base.cra_name);
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static void qce_skcipher_unregister(struct qce_device *qce)
|
||||
+{
|
||||
+ struct qce_alg_template *tmpl, *n;
|
||||
+
|
||||
+ list_for_each_entry_safe(tmpl, n, &skcipher_algs, entry) {
|
||||
+ crypto_unregister_skcipher(&tmpl->alg.skcipher);
|
||||
+ list_del(&tmpl->entry);
|
||||
+ kfree(tmpl);
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_register(struct qce_device *qce)
|
||||
+{
|
||||
+ int ret, i;
|
||||
+
|
||||
+ for (i = 0; i < ARRAY_SIZE(skcipher_def); i++) {
|
||||
+ ret = qce_skcipher_register_one(&skcipher_def[i], qce);
|
||||
+ if (ret)
|
||||
+ goto err;
|
||||
+ }
|
||||
+
|
||||
+ return 0;
|
||||
+err:
|
||||
+ qce_skcipher_unregister(qce);
|
||||
+ return ret;
|
||||
+}
|
||||
+
|
||||
+const struct qce_algo_ops skcipher_ops = {
|
||||
+ .type = CRYPTO_ALG_TYPE_SKCIPHER,
|
||||
+ .register_algs = qce_skcipher_register,
|
||||
+ .unregister_algs = qce_skcipher_unregister,
|
||||
+ .async_req_handle = qce_skcipher_async_req_handle,
|
||||
+};
|
||||
@ -0,0 +1,993 @@
|
||||
From f441873642eebf20566c18d2966a8cd4b433ec1c Mon Sep 17 00:00:00 2001
|
||||
From: Ard Biesheuvel <ardb@kernel.org>
|
||||
Date: Tue, 5 Nov 2019 14:28:17 +0100
|
||||
Subject: [PATCH] crypto: qce - switch to skcipher API
|
||||
|
||||
Commit 7a7ffe65c8c5 ("crypto: skcipher - Add top-level skcipher interface")
|
||||
dated 20 august 2015 introduced the new skcipher API which is supposed to
|
||||
replace both blkcipher and ablkcipher. While all consumers of the API have
|
||||
been converted long ago, some producers of the ablkcipher remain, forcing
|
||||
us to keep the ablkcipher support routines alive, along with the matching
|
||||
code to expose [a]blkciphers via the skcipher API.
|
||||
|
||||
So switch this driver to the skcipher API, allowing us to finally drop the
|
||||
blkcipher code in the near future.
|
||||
|
||||
Reviewed-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
|
||||
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
|
||||
Backported-to-4.19-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
|
||||
|
||||
--- a/drivers/crypto/qce/Makefile
|
||||
+++ b/drivers/crypto/qce/Makefile
|
||||
@@ -4,4 +4,4 @@ qcrypto-objs := core.o \
|
||||
common.o \
|
||||
dma.o \
|
||||
sha.o \
|
||||
- ablkcipher.o
|
||||
+ skcipher.o
|
||||
--- a/drivers/crypto/qce/cipher.h
|
||||
+++ b/drivers/crypto/qce/cipher.h
|
||||
@@ -45,12 +45,12 @@ struct qce_cipher_reqctx {
|
||||
unsigned int cryptlen;
|
||||
};
|
||||
|
||||
-static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_tfm *tfm)
|
||||
+static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_skcipher *tfm)
|
||||
{
|
||||
- struct crypto_alg *alg = tfm->__crt_alg;
|
||||
- return container_of(alg, struct qce_alg_template, alg.crypto);
|
||||
+ struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
|
||||
+ return container_of(alg, struct qce_alg_template, alg.skcipher);
|
||||
}
|
||||
|
||||
-extern const struct qce_algo_ops ablkcipher_ops;
|
||||
+extern const struct qce_algo_ops skcipher_ops;
|
||||
|
||||
#endif /* _CIPHER_H_ */
|
||||
--- a/drivers/crypto/qce/common.c
|
||||
+++ b/drivers/crypto/qce/common.c
|
||||
@@ -304,13 +304,13 @@ go_proc:
|
||||
return 0;
|
||||
}
|
||||
|
||||
-static int qce_setup_regs_ablkcipher(struct crypto_async_request *async_req,
|
||||
+static int qce_setup_regs_skcipher(struct crypto_async_request *async_req,
|
||||
u32 totallen, u32 offset)
|
||||
{
|
||||
- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
|
||||
- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
|
||||
+ struct skcipher_request *req = skcipher_request_cast(async_req);
|
||||
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
|
||||
struct qce_cipher_ctx *ctx = crypto_tfm_ctx(async_req->tfm);
|
||||
- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
|
||||
+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
|
||||
struct qce_device *qce = tmpl->qce;
|
||||
__be32 enckey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(__be32)] = {0};
|
||||
__be32 enciv[QCE_MAX_IV_SIZE / sizeof(__be32)] = {0};
|
||||
@@ -389,8 +389,8 @@ int qce_start(struct crypto_async_reques
|
||||
u32 offset)
|
||||
{
|
||||
switch (type) {
|
||||
- case CRYPTO_ALG_TYPE_ABLKCIPHER:
|
||||
- return qce_setup_regs_ablkcipher(async_req, totallen, offset);
|
||||
+ case CRYPTO_ALG_TYPE_SKCIPHER:
|
||||
+ return qce_setup_regs_skcipher(async_req, totallen, offset);
|
||||
case CRYPTO_ALG_TYPE_AHASH:
|
||||
return qce_setup_regs_ahash(async_req, totallen, offset);
|
||||
default:
|
||||
--- a/drivers/crypto/qce/common.h
|
||||
+++ b/drivers/crypto/qce/common.h
|
||||
@@ -10,6 +10,7 @@
|
||||
#include <linux/types.h>
|
||||
#include <crypto/aes.h>
|
||||
#include <crypto/hash.h>
|
||||
+#include <crypto/internal/skcipher.h>
|
||||
|
||||
/* key size in bytes */
|
||||
#define QCE_SHA_HMAC_KEY_SIZE 64
|
||||
@@ -79,7 +80,7 @@ struct qce_alg_template {
|
||||
unsigned long alg_flags;
|
||||
const u32 *std_iv;
|
||||
union {
|
||||
- struct crypto_alg crypto;
|
||||
+ struct skcipher_alg skcipher;
|
||||
struct ahash_alg ahash;
|
||||
} alg;
|
||||
struct qce_device *qce;
|
||||
--- a/drivers/crypto/qce/core.c
|
||||
+++ b/drivers/crypto/qce/core.c
|
||||
@@ -22,7 +22,7 @@
|
||||
#define QCE_QUEUE_LENGTH 1
|
||||
|
||||
static const struct qce_algo_ops *qce_ops[] = {
|
||||
- &ablkcipher_ops,
|
||||
+ &skcipher_ops,
|
||||
&ahash_ops,
|
||||
};
|
||||
|
||||
--- a/drivers/crypto/qce/ablkcipher.c
|
||||
+++ /dev/null
|
||||
@@ -1,440 +0,0 @@
|
||||
-// SPDX-License-Identifier: GPL-2.0-only
|
||||
-/*
|
||||
- * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
|
||||
- */
|
||||
-
|
||||
-#include <linux/device.h>
|
||||
-#include <linux/interrupt.h>
|
||||
-#include <linux/types.h>
|
||||
-#include <crypto/aes.h>
|
||||
-#include <crypto/internal/des.h>
|
||||
-#include <crypto/internal/skcipher.h>
|
||||
-
|
||||
-#include "cipher.h"
|
||||
-
|
||||
-static LIST_HEAD(ablkcipher_algs);
|
||||
-
|
||||
-static void qce_ablkcipher_done(void *data)
|
||||
-{
|
||||
- struct crypto_async_request *async_req = data;
|
||||
- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
|
||||
- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
|
||||
- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
|
||||
- struct qce_device *qce = tmpl->qce;
|
||||
- enum dma_data_direction dir_src, dir_dst;
|
||||
- u32 status;
|
||||
- int error;
|
||||
- bool diff_dst;
|
||||
-
|
||||
- diff_dst = (req->src != req->dst) ? true : false;
|
||||
- dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
|
||||
- dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
|
||||
-
|
||||
- error = qce_dma_terminate_all(&qce->dma);
|
||||
- if (error)
|
||||
- dev_dbg(qce->dev, "ablkcipher dma termination error (%d)\n",
|
||||
- error);
|
||||
-
|
||||
- if (diff_dst)
|
||||
- dma_unmap_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src);
|
||||
- dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
-
|
||||
- sg_free_table(&rctx->dst_tbl);
|
||||
-
|
||||
- error = qce_check_status(qce, &status);
|
||||
- if (error < 0)
|
||||
- dev_dbg(qce->dev, "ablkcipher operation error (%x)\n", status);
|
||||
-
|
||||
- qce->async_req_done(tmpl->qce, error);
|
||||
-}
|
||||
-
|
||||
-static int
|
||||
-qce_ablkcipher_async_req_handle(struct crypto_async_request *async_req)
|
||||
-{
|
||||
- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
|
||||
- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
|
||||
- struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
|
||||
- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
|
||||
- struct qce_device *qce = tmpl->qce;
|
||||
- enum dma_data_direction dir_src, dir_dst;
|
||||
- struct scatterlist *sg;
|
||||
- bool diff_dst;
|
||||
- gfp_t gfp;
|
||||
- int ret;
|
||||
-
|
||||
- rctx->iv = req->info;
|
||||
- rctx->ivsize = crypto_ablkcipher_ivsize(ablkcipher);
|
||||
- rctx->cryptlen = req->nbytes;
|
||||
-
|
||||
- diff_dst = (req->src != req->dst) ? true : false;
|
||||
- dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
|
||||
- dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
|
||||
-
|
||||
- rctx->src_nents = sg_nents_for_len(req->src, req->nbytes);
|
||||
- if (diff_dst)
|
||||
- rctx->dst_nents = sg_nents_for_len(req->dst, req->nbytes);
|
||||
- else
|
||||
- rctx->dst_nents = rctx->src_nents;
|
||||
- if (rctx->src_nents < 0) {
|
||||
- dev_err(qce->dev, "Invalid numbers of src SG.\n");
|
||||
- return rctx->src_nents;
|
||||
- }
|
||||
- if (rctx->dst_nents < 0) {
|
||||
- dev_err(qce->dev, "Invalid numbers of dst SG.\n");
|
||||
- return -rctx->dst_nents;
|
||||
- }
|
||||
-
|
||||
- rctx->dst_nents += 1;
|
||||
-
|
||||
- gfp = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
|
||||
- GFP_KERNEL : GFP_ATOMIC;
|
||||
-
|
||||
- ret = sg_alloc_table(&rctx->dst_tbl, rctx->dst_nents, gfp);
|
||||
- if (ret)
|
||||
- return ret;
|
||||
-
|
||||
- sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ);
|
||||
-
|
||||
- sg = qce_sgtable_add(&rctx->dst_tbl, req->dst);
|
||||
- if (IS_ERR(sg)) {
|
||||
- ret = PTR_ERR(sg);
|
||||
- goto error_free;
|
||||
- }
|
||||
-
|
||||
- sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->result_sg);
|
||||
- if (IS_ERR(sg)) {
|
||||
- ret = PTR_ERR(sg);
|
||||
- goto error_free;
|
||||
- }
|
||||
-
|
||||
- sg_mark_end(sg);
|
||||
- rctx->dst_sg = rctx->dst_tbl.sgl;
|
||||
-
|
||||
- ret = dma_map_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
- if (ret < 0)
|
||||
- goto error_free;
|
||||
-
|
||||
- if (diff_dst) {
|
||||
- ret = dma_map_sg(qce->dev, req->src, rctx->src_nents, dir_src);
|
||||
- if (ret < 0)
|
||||
- goto error_unmap_dst;
|
||||
- rctx->src_sg = req->src;
|
||||
- } else {
|
||||
- rctx->src_sg = rctx->dst_sg;
|
||||
- }
|
||||
-
|
||||
- ret = qce_dma_prep_sgs(&qce->dma, rctx->src_sg, rctx->src_nents,
|
||||
- rctx->dst_sg, rctx->dst_nents,
|
||||
- qce_ablkcipher_done, async_req);
|
||||
- if (ret)
|
||||
- goto error_unmap_src;
|
||||
-
|
||||
- qce_dma_issue_pending(&qce->dma);
|
||||
-
|
||||
- ret = qce_start(async_req, tmpl->crypto_alg_type, req->nbytes, 0);
|
||||
- if (ret)
|
||||
- goto error_terminate;
|
||||
-
|
||||
- return 0;
|
||||
-
|
||||
-error_terminate:
|
||||
- qce_dma_terminate_all(&qce->dma);
|
||||
-error_unmap_src:
|
||||
- if (diff_dst)
|
||||
- dma_unmap_sg(qce->dev, req->src, rctx->src_nents, dir_src);
|
||||
-error_unmap_dst:
|
||||
- dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
-error_free:
|
||||
- sg_free_table(&rctx->dst_tbl);
|
||||
- return ret;
|
||||
-}
|
||||
-
|
||||
-static int qce_ablkcipher_setkey(struct crypto_ablkcipher *ablk, const u8 *key,
|
||||
- unsigned int keylen)
|
||||
-{
|
||||
- struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk);
|
||||
- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
|
||||
- int ret;
|
||||
-
|
||||
- if (!key || !keylen)
|
||||
- return -EINVAL;
|
||||
-
|
||||
- switch (keylen) {
|
||||
- case AES_KEYSIZE_128:
|
||||
- case AES_KEYSIZE_256:
|
||||
- break;
|
||||
- default:
|
||||
- goto fallback;
|
||||
- }
|
||||
-
|
||||
- ctx->enc_keylen = keylen;
|
||||
- memcpy(ctx->enc_key, key, keylen);
|
||||
- return 0;
|
||||
-fallback:
|
||||
- ret = crypto_sync_skcipher_setkey(ctx->fallback, key, keylen);
|
||||
- if (!ret)
|
||||
- ctx->enc_keylen = keylen;
|
||||
- return ret;
|
||||
-}
|
||||
-
|
||||
-static int qce_des_setkey(struct crypto_ablkcipher *ablk, const u8 *key,
|
||||
- unsigned int keylen)
|
||||
-{
|
||||
- struct qce_cipher_ctx *ctx = crypto_ablkcipher_ctx(ablk);
|
||||
- int err;
|
||||
-
|
||||
- err = verify_ablkcipher_des_key(ablk, key);
|
||||
- if (err)
|
||||
- return err;
|
||||
-
|
||||
- ctx->enc_keylen = keylen;
|
||||
- memcpy(ctx->enc_key, key, keylen);
|
||||
- return 0;
|
||||
-}
|
||||
-
|
||||
-static int qce_des3_setkey(struct crypto_ablkcipher *ablk, const u8 *key,
|
||||
- unsigned int keylen)
|
||||
-{
|
||||
- struct qce_cipher_ctx *ctx = crypto_ablkcipher_ctx(ablk);
|
||||
- int err;
|
||||
-
|
||||
- err = verify_ablkcipher_des3_key(ablk, key);
|
||||
- if (err)
|
||||
- return err;
|
||||
-
|
||||
- ctx->enc_keylen = keylen;
|
||||
- memcpy(ctx->enc_key, key, keylen);
|
||||
- return 0;
|
||||
-}
|
||||
-
|
||||
-static int qce_ablkcipher_crypt(struct ablkcipher_request *req, int encrypt)
|
||||
-{
|
||||
- struct crypto_tfm *tfm =
|
||||
- crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req));
|
||||
- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
|
||||
- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
|
||||
- struct qce_alg_template *tmpl = to_cipher_tmpl(tfm);
|
||||
- int ret;
|
||||
-
|
||||
- rctx->flags = tmpl->alg_flags;
|
||||
- rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT;
|
||||
-
|
||||
- if (IS_AES(rctx->flags) && ctx->enc_keylen != AES_KEYSIZE_128 &&
|
||||
- ctx->enc_keylen != AES_KEYSIZE_256) {
|
||||
- SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
|
||||
-
|
||||
- skcipher_request_set_sync_tfm(subreq, ctx->fallback);
|
||||
- skcipher_request_set_callback(subreq, req->base.flags,
|
||||
- NULL, NULL);
|
||||
- skcipher_request_set_crypt(subreq, req->src, req->dst,
|
||||
- req->nbytes, req->info);
|
||||
- ret = encrypt ? crypto_skcipher_encrypt(subreq) :
|
||||
- crypto_skcipher_decrypt(subreq);
|
||||
- skcipher_request_zero(subreq);
|
||||
- return ret;
|
||||
- }
|
||||
-
|
||||
- return tmpl->qce->async_req_enqueue(tmpl->qce, &req->base);
|
||||
-}
|
||||
-
|
||||
-static int qce_ablkcipher_encrypt(struct ablkcipher_request *req)
|
||||
-{
|
||||
- return qce_ablkcipher_crypt(req, 1);
|
||||
-}
|
||||
-
|
||||
-static int qce_ablkcipher_decrypt(struct ablkcipher_request *req)
|
||||
-{
|
||||
- return qce_ablkcipher_crypt(req, 0);
|
||||
-}
|
||||
-
|
||||
-static int qce_ablkcipher_init(struct crypto_tfm *tfm)
|
||||
-{
|
||||
- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
|
||||
-
|
||||
- memset(ctx, 0, sizeof(*ctx));
|
||||
- tfm->crt_ablkcipher.reqsize = sizeof(struct qce_cipher_reqctx);
|
||||
-
|
||||
- ctx->fallback = crypto_alloc_sync_skcipher(crypto_tfm_alg_name(tfm),
|
||||
- 0, CRYPTO_ALG_NEED_FALLBACK);
|
||||
- return PTR_ERR_OR_ZERO(ctx->fallback);
|
||||
-}
|
||||
-
|
||||
-static void qce_ablkcipher_exit(struct crypto_tfm *tfm)
|
||||
-{
|
||||
- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
|
||||
-
|
||||
- crypto_free_sync_skcipher(ctx->fallback);
|
||||
-}
|
||||
-
|
||||
-struct qce_ablkcipher_def {
|
||||
- unsigned long flags;
|
||||
- const char *name;
|
||||
- const char *drv_name;
|
||||
- unsigned int blocksize;
|
||||
- unsigned int ivsize;
|
||||
- unsigned int min_keysize;
|
||||
- unsigned int max_keysize;
|
||||
-};
|
||||
-
|
||||
-static const struct qce_ablkcipher_def ablkcipher_def[] = {
|
||||
- {
|
||||
- .flags = QCE_ALG_AES | QCE_MODE_ECB,
|
||||
- .name = "ecb(aes)",
|
||||
- .drv_name = "ecb-aes-qce",
|
||||
- .blocksize = AES_BLOCK_SIZE,
|
||||
- .ivsize = AES_BLOCK_SIZE,
|
||||
- .min_keysize = AES_MIN_KEY_SIZE,
|
||||
- .max_keysize = AES_MAX_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_AES | QCE_MODE_CBC,
|
||||
- .name = "cbc(aes)",
|
||||
- .drv_name = "cbc-aes-qce",
|
||||
- .blocksize = AES_BLOCK_SIZE,
|
||||
- .ivsize = AES_BLOCK_SIZE,
|
||||
- .min_keysize = AES_MIN_KEY_SIZE,
|
||||
- .max_keysize = AES_MAX_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_AES | QCE_MODE_CTR,
|
||||
- .name = "ctr(aes)",
|
||||
- .drv_name = "ctr-aes-qce",
|
||||
- .blocksize = AES_BLOCK_SIZE,
|
||||
- .ivsize = AES_BLOCK_SIZE,
|
||||
- .min_keysize = AES_MIN_KEY_SIZE,
|
||||
- .max_keysize = AES_MAX_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_AES | QCE_MODE_XTS,
|
||||
- .name = "xts(aes)",
|
||||
- .drv_name = "xts-aes-qce",
|
||||
- .blocksize = AES_BLOCK_SIZE,
|
||||
- .ivsize = AES_BLOCK_SIZE,
|
||||
- .min_keysize = AES_MIN_KEY_SIZE,
|
||||
- .max_keysize = AES_MAX_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_DES | QCE_MODE_ECB,
|
||||
- .name = "ecb(des)",
|
||||
- .drv_name = "ecb-des-qce",
|
||||
- .blocksize = DES_BLOCK_SIZE,
|
||||
- .ivsize = 0,
|
||||
- .min_keysize = DES_KEY_SIZE,
|
||||
- .max_keysize = DES_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_DES | QCE_MODE_CBC,
|
||||
- .name = "cbc(des)",
|
||||
- .drv_name = "cbc-des-qce",
|
||||
- .blocksize = DES_BLOCK_SIZE,
|
||||
- .ivsize = DES_BLOCK_SIZE,
|
||||
- .min_keysize = DES_KEY_SIZE,
|
||||
- .max_keysize = DES_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_3DES | QCE_MODE_ECB,
|
||||
- .name = "ecb(des3_ede)",
|
||||
- .drv_name = "ecb-3des-qce",
|
||||
- .blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
- .ivsize = 0,
|
||||
- .min_keysize = DES3_EDE_KEY_SIZE,
|
||||
- .max_keysize = DES3_EDE_KEY_SIZE,
|
||||
- },
|
||||
- {
|
||||
- .flags = QCE_ALG_3DES | QCE_MODE_CBC,
|
||||
- .name = "cbc(des3_ede)",
|
||||
- .drv_name = "cbc-3des-qce",
|
||||
- .blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
- .ivsize = DES3_EDE_BLOCK_SIZE,
|
||||
- .min_keysize = DES3_EDE_KEY_SIZE,
|
||||
- .max_keysize = DES3_EDE_KEY_SIZE,
|
||||
- },
|
||||
-};
|
||||
-
|
||||
-static int qce_ablkcipher_register_one(const struct qce_ablkcipher_def *def,
|
||||
- struct qce_device *qce)
|
||||
-{
|
||||
- struct qce_alg_template *tmpl;
|
||||
- struct crypto_alg *alg;
|
||||
- int ret;
|
||||
-
|
||||
- tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL);
|
||||
- if (!tmpl)
|
||||
- return -ENOMEM;
|
||||
-
|
||||
- alg = &tmpl->alg.crypto;
|
||||
-
|
||||
- snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
|
||||
- snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
|
||||
- def->drv_name);
|
||||
-
|
||||
- alg->cra_blocksize = def->blocksize;
|
||||
- alg->cra_ablkcipher.ivsize = def->ivsize;
|
||||
- alg->cra_ablkcipher.min_keysize = def->min_keysize;
|
||||
- alg->cra_ablkcipher.max_keysize = def->max_keysize;
|
||||
- alg->cra_ablkcipher.setkey = IS_3DES(def->flags) ? qce_des3_setkey :
|
||||
- IS_DES(def->flags) ? qce_des_setkey :
|
||||
- qce_ablkcipher_setkey;
|
||||
- alg->cra_ablkcipher.encrypt = qce_ablkcipher_encrypt;
|
||||
- alg->cra_ablkcipher.decrypt = qce_ablkcipher_decrypt;
|
||||
-
|
||||
- alg->cra_priority = 300;
|
||||
- alg->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
|
||||
- CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_KERN_DRIVER_ONLY;
|
||||
- alg->cra_ctxsize = sizeof(struct qce_cipher_ctx);
|
||||
- alg->cra_alignmask = 0;
|
||||
- alg->cra_type = &crypto_ablkcipher_type;
|
||||
- alg->cra_module = THIS_MODULE;
|
||||
- alg->cra_init = qce_ablkcipher_init;
|
||||
- alg->cra_exit = qce_ablkcipher_exit;
|
||||
-
|
||||
- INIT_LIST_HEAD(&tmpl->entry);
|
||||
- tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_ABLKCIPHER;
|
||||
- tmpl->alg_flags = def->flags;
|
||||
- tmpl->qce = qce;
|
||||
-
|
||||
- ret = crypto_register_alg(alg);
|
||||
- if (ret) {
|
||||
- kfree(tmpl);
|
||||
- dev_err(qce->dev, "%s registration failed\n", alg->cra_name);
|
||||
- return ret;
|
||||
- }
|
||||
-
|
||||
- list_add_tail(&tmpl->entry, &ablkcipher_algs);
|
||||
- dev_dbg(qce->dev, "%s is registered\n", alg->cra_name);
|
||||
- return 0;
|
||||
-}
|
||||
-
|
||||
-static void qce_ablkcipher_unregister(struct qce_device *qce)
|
||||
-{
|
||||
- struct qce_alg_template *tmpl, *n;
|
||||
-
|
||||
- list_for_each_entry_safe(tmpl, n, &ablkcipher_algs, entry) {
|
||||
- crypto_unregister_alg(&tmpl->alg.crypto);
|
||||
- list_del(&tmpl->entry);
|
||||
- kfree(tmpl);
|
||||
- }
|
||||
-}
|
||||
-
|
||||
-static int qce_ablkcipher_register(struct qce_device *qce)
|
||||
-{
|
||||
- int ret, i;
|
||||
-
|
||||
- for (i = 0; i < ARRAY_SIZE(ablkcipher_def); i++) {
|
||||
- ret = qce_ablkcipher_register_one(&ablkcipher_def[i], qce);
|
||||
- if (ret)
|
||||
- goto err;
|
||||
- }
|
||||
-
|
||||
- return 0;
|
||||
-err:
|
||||
- qce_ablkcipher_unregister(qce);
|
||||
- return ret;
|
||||
-}
|
||||
-
|
||||
-const struct qce_algo_ops ablkcipher_ops = {
|
||||
- .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
|
||||
- .register_algs = qce_ablkcipher_register,
|
||||
- .unregister_algs = qce_ablkcipher_unregister,
|
||||
- .async_req_handle = qce_ablkcipher_async_req_handle,
|
||||
-};
|
||||
--- /dev/null
|
||||
+++ b/drivers/crypto/qce/skcipher.c
|
||||
@@ -0,0 +1,440 @@
|
||||
+// SPDX-License-Identifier: GPL-2.0-only
|
||||
+/*
|
||||
+ * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
|
||||
+ */
|
||||
+
|
||||
+#include <linux/device.h>
|
||||
+#include <linux/interrupt.h>
|
||||
+#include <linux/types.h>
|
||||
+#include <crypto/aes.h>
|
||||
+#include <crypto/internal/des.h>
|
||||
+#include <crypto/internal/skcipher.h>
|
||||
+
|
||||
+#include "cipher.h"
|
||||
+
|
||||
+static LIST_HEAD(skcipher_algs);
|
||||
+
|
||||
+static void qce_skcipher_done(void *data)
|
||||
+{
|
||||
+ struct crypto_async_request *async_req = data;
|
||||
+ struct skcipher_request *req = skcipher_request_cast(async_req);
|
||||
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
|
||||
+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
|
||||
+ struct qce_device *qce = tmpl->qce;
|
||||
+ enum dma_data_direction dir_src, dir_dst;
|
||||
+ u32 status;
|
||||
+ int error;
|
||||
+ bool diff_dst;
|
||||
+
|
||||
+ diff_dst = (req->src != req->dst) ? true : false;
|
||||
+ dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
|
||||
+ dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
|
||||
+
|
||||
+ error = qce_dma_terminate_all(&qce->dma);
|
||||
+ if (error)
|
||||
+ dev_dbg(qce->dev, "skcipher dma termination error (%d)\n",
|
||||
+ error);
|
||||
+
|
||||
+ if (diff_dst)
|
||||
+ dma_unmap_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src);
|
||||
+ dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
+
|
||||
+ sg_free_table(&rctx->dst_tbl);
|
||||
+
|
||||
+ error = qce_check_status(qce, &status);
|
||||
+ if (error < 0)
|
||||
+ dev_dbg(qce->dev, "skcipher operation error (%x)\n", status);
|
||||
+
|
||||
+ qce->async_req_done(tmpl->qce, error);
|
||||
+}
|
||||
+
|
||||
+static int
|
||||
+qce_skcipher_async_req_handle(struct crypto_async_request *async_req)
|
||||
+{
|
||||
+ struct skcipher_request *req = skcipher_request_cast(async_req);
|
||||
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
|
||||
+ struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
|
||||
+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
|
||||
+ struct qce_device *qce = tmpl->qce;
|
||||
+ enum dma_data_direction dir_src, dir_dst;
|
||||
+ struct scatterlist *sg;
|
||||
+ bool diff_dst;
|
||||
+ gfp_t gfp;
|
||||
+ int ret;
|
||||
+
|
||||
+ rctx->iv = req->iv;
|
||||
+ rctx->ivsize = crypto_skcipher_ivsize(skcipher);
|
||||
+ rctx->cryptlen = req->cryptlen;
|
||||
+
|
||||
+ diff_dst = (req->src != req->dst) ? true : false;
|
||||
+ dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
|
||||
+ dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
|
||||
+
|
||||
+ rctx->src_nents = sg_nents_for_len(req->src, req->cryptlen);
|
||||
+ if (diff_dst)
|
||||
+ rctx->dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
|
||||
+ else
|
||||
+ rctx->dst_nents = rctx->src_nents;
|
||||
+ if (rctx->src_nents < 0) {
|
||||
+ dev_err(qce->dev, "Invalid numbers of src SG.\n");
|
||||
+ return rctx->src_nents;
|
||||
+ }
|
||||
+ if (rctx->dst_nents < 0) {
|
||||
+ dev_err(qce->dev, "Invalid numbers of dst SG.\n");
|
||||
+ return -rctx->dst_nents;
|
||||
+ }
|
||||
+
|
||||
+ rctx->dst_nents += 1;
|
||||
+
|
||||
+ gfp = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
|
||||
+ GFP_KERNEL : GFP_ATOMIC;
|
||||
+
|
||||
+ ret = sg_alloc_table(&rctx->dst_tbl, rctx->dst_nents, gfp);
|
||||
+ if (ret)
|
||||
+ return ret;
|
||||
+
|
||||
+ sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ);
|
||||
+
|
||||
+ sg = qce_sgtable_add(&rctx->dst_tbl, req->dst);
|
||||
+ if (IS_ERR(sg)) {
|
||||
+ ret = PTR_ERR(sg);
|
||||
+ goto error_free;
|
||||
+ }
|
||||
+
|
||||
+ sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->result_sg);
|
||||
+ if (IS_ERR(sg)) {
|
||||
+ ret = PTR_ERR(sg);
|
||||
+ goto error_free;
|
||||
+ }
|
||||
+
|
||||
+ sg_mark_end(sg);
|
||||
+ rctx->dst_sg = rctx->dst_tbl.sgl;
|
||||
+
|
||||
+ ret = dma_map_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
+ if (ret < 0)
|
||||
+ goto error_free;
|
||||
+
|
||||
+ if (diff_dst) {
|
||||
+ ret = dma_map_sg(qce->dev, req->src, rctx->src_nents, dir_src);
|
||||
+ if (ret < 0)
|
||||
+ goto error_unmap_dst;
|
||||
+ rctx->src_sg = req->src;
|
||||
+ } else {
|
||||
+ rctx->src_sg = rctx->dst_sg;
|
||||
+ }
|
||||
+
|
||||
+ ret = qce_dma_prep_sgs(&qce->dma, rctx->src_sg, rctx->src_nents,
|
||||
+ rctx->dst_sg, rctx->dst_nents,
|
||||
+ qce_skcipher_done, async_req);
|
||||
+ if (ret)
|
||||
+ goto error_unmap_src;
|
||||
+
|
||||
+ qce_dma_issue_pending(&qce->dma);
|
||||
+
|
||||
+ ret = qce_start(async_req, tmpl->crypto_alg_type, req->cryptlen, 0);
|
||||
+ if (ret)
|
||||
+ goto error_terminate;
|
||||
+
|
||||
+ return 0;
|
||||
+
|
||||
+error_terminate:
|
||||
+ qce_dma_terminate_all(&qce->dma);
|
||||
+error_unmap_src:
|
||||
+ if (diff_dst)
|
||||
+ dma_unmap_sg(qce->dev, req->src, rctx->src_nents, dir_src);
|
||||
+error_unmap_dst:
|
||||
+ dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
|
||||
+error_free:
|
||||
+ sg_free_table(&rctx->dst_tbl);
|
||||
+ return ret;
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_setkey(struct crypto_skcipher *ablk, const u8 *key,
|
||||
+ unsigned int keylen)
|
||||
+{
|
||||
+ struct crypto_tfm *tfm = crypto_skcipher_tfm(ablk);
|
||||
+ struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
|
||||
+ int ret;
|
||||
+
|
||||
+ if (!key || !keylen)
|
||||
+ return -EINVAL;
|
||||
+
|
||||
+ switch (keylen) {
|
||||
+ case AES_KEYSIZE_128:
|
||||
+ case AES_KEYSIZE_256:
|
||||
+ break;
|
||||
+ default:
|
||||
+ goto fallback;
|
||||
+ }
|
||||
+
|
||||
+ ctx->enc_keylen = keylen;
|
||||
+ memcpy(ctx->enc_key, key, keylen);
|
||||
+ return 0;
|
||||
+fallback:
|
||||
+ ret = crypto_sync_skcipher_setkey(ctx->fallback, key, keylen);
|
||||
+ if (!ret)
|
||||
+ ctx->enc_keylen = keylen;
|
||||
+ return ret;
|
||||
+}
|
||||
+
|
||||
+static int qce_des_setkey(struct crypto_skcipher *ablk, const u8 *key,
|
||||
+ unsigned int keylen)
|
||||
+{
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(ablk);
|
||||
+ int err;
|
||||
+
|
||||
+ err = verify_skcipher_des_key(ablk, key);
|
||||
+ if (err)
|
||||
+ return err;
|
||||
+
|
||||
+ ctx->enc_keylen = keylen;
|
||||
+ memcpy(ctx->enc_key, key, keylen);
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int qce_des3_setkey(struct crypto_skcipher *ablk, const u8 *key,
|
||||
+ unsigned int keylen)
|
||||
+{
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(ablk);
|
||||
+ int err;
|
||||
+
|
||||
+ err = verify_skcipher_des3_key(ablk, key);
|
||||
+ if (err)
|
||||
+ return err;
|
||||
+
|
||||
+ ctx->enc_keylen = keylen;
|
||||
+ memcpy(ctx->enc_key, key, keylen);
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_crypt(struct skcipher_request *req, int encrypt)
|
||||
+{
|
||||
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
|
||||
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
|
||||
+ struct qce_alg_template *tmpl = to_cipher_tmpl(tfm);
|
||||
+ int ret;
|
||||
+
|
||||
+ rctx->flags = tmpl->alg_flags;
|
||||
+ rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT;
|
||||
+
|
||||
+ if (IS_AES(rctx->flags) && ctx->enc_keylen != AES_KEYSIZE_128 &&
|
||||
+ ctx->enc_keylen != AES_KEYSIZE_256) {
|
||||
+ SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
|
||||
+
|
||||
+ skcipher_request_set_sync_tfm(subreq, ctx->fallback);
|
||||
+ skcipher_request_set_callback(subreq, req->base.flags,
|
||||
+ NULL, NULL);
|
||||
+ skcipher_request_set_crypt(subreq, req->src, req->dst,
|
||||
+ req->cryptlen, req->iv);
|
||||
+ ret = encrypt ? crypto_skcipher_encrypt(subreq) :
|
||||
+ crypto_skcipher_decrypt(subreq);
|
||||
+ skcipher_request_zero(subreq);
|
||||
+ return ret;
|
||||
+ }
|
||||
+
|
||||
+ return tmpl->qce->async_req_enqueue(tmpl->qce, &req->base);
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_encrypt(struct skcipher_request *req)
|
||||
+{
|
||||
+ return qce_skcipher_crypt(req, 1);
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_decrypt(struct skcipher_request *req)
|
||||
+{
|
||||
+ return qce_skcipher_crypt(req, 0);
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_init(struct crypto_skcipher *tfm)
|
||||
+{
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
|
||||
+
|
||||
+ memset(ctx, 0, sizeof(*ctx));
|
||||
+ crypto_skcipher_set_reqsize(tfm, sizeof(struct qce_cipher_reqctx));
|
||||
+
|
||||
+ ctx->fallback = crypto_alloc_sync_skcipher(crypto_tfm_alg_name(&tfm->base),
|
||||
+ 0, CRYPTO_ALG_NEED_FALLBACK);
|
||||
+ return PTR_ERR_OR_ZERO(ctx->fallback);
|
||||
+}
|
||||
+
|
||||
+static void qce_skcipher_exit(struct crypto_skcipher *tfm)
|
||||
+{
|
||||
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
|
||||
+
|
||||
+ crypto_free_sync_skcipher(ctx->fallback);
|
||||
+}
|
||||
+
|
||||
+struct qce_skcipher_def {
|
||||
+ unsigned long flags;
|
||||
+ const char *name;
|
||||
+ const char *drv_name;
|
||||
+ unsigned int blocksize;
|
||||
+ unsigned int ivsize;
|
||||
+ unsigned int min_keysize;
|
||||
+ unsigned int max_keysize;
|
||||
+};
|
||||
+
|
||||
+static const struct qce_skcipher_def skcipher_def[] = {
|
||||
+ {
|
||||
+ .flags = QCE_ALG_AES | QCE_MODE_ECB,
|
||||
+ .name = "ecb(aes)",
|
||||
+ .drv_name = "ecb-aes-qce",
|
||||
+ .blocksize = AES_BLOCK_SIZE,
|
||||
+ .ivsize = AES_BLOCK_SIZE,
|
||||
+ .min_keysize = AES_MIN_KEY_SIZE,
|
||||
+ .max_keysize = AES_MAX_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_AES | QCE_MODE_CBC,
|
||||
+ .name = "cbc(aes)",
|
||||
+ .drv_name = "cbc-aes-qce",
|
||||
+ .blocksize = AES_BLOCK_SIZE,
|
||||
+ .ivsize = AES_BLOCK_SIZE,
|
||||
+ .min_keysize = AES_MIN_KEY_SIZE,
|
||||
+ .max_keysize = AES_MAX_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_AES | QCE_MODE_CTR,
|
||||
+ .name = "ctr(aes)",
|
||||
+ .drv_name = "ctr-aes-qce",
|
||||
+ .blocksize = AES_BLOCK_SIZE,
|
||||
+ .ivsize = AES_BLOCK_SIZE,
|
||||
+ .min_keysize = AES_MIN_KEY_SIZE,
|
||||
+ .max_keysize = AES_MAX_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_AES | QCE_MODE_XTS,
|
||||
+ .name = "xts(aes)",
|
||||
+ .drv_name = "xts-aes-qce",
|
||||
+ .blocksize = AES_BLOCK_SIZE,
|
||||
+ .ivsize = AES_BLOCK_SIZE,
|
||||
+ .min_keysize = AES_MIN_KEY_SIZE,
|
||||
+ .max_keysize = AES_MAX_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_DES | QCE_MODE_ECB,
|
||||
+ .name = "ecb(des)",
|
||||
+ .drv_name = "ecb-des-qce",
|
||||
+ .blocksize = DES_BLOCK_SIZE,
|
||||
+ .ivsize = 0,
|
||||
+ .min_keysize = DES_KEY_SIZE,
|
||||
+ .max_keysize = DES_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_DES | QCE_MODE_CBC,
|
||||
+ .name = "cbc(des)",
|
||||
+ .drv_name = "cbc-des-qce",
|
||||
+ .blocksize = DES_BLOCK_SIZE,
|
||||
+ .ivsize = DES_BLOCK_SIZE,
|
||||
+ .min_keysize = DES_KEY_SIZE,
|
||||
+ .max_keysize = DES_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_3DES | QCE_MODE_ECB,
|
||||
+ .name = "ecb(des3_ede)",
|
||||
+ .drv_name = "ecb-3des-qce",
|
||||
+ .blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
+ .ivsize = 0,
|
||||
+ .min_keysize = DES3_EDE_KEY_SIZE,
|
||||
+ .max_keysize = DES3_EDE_KEY_SIZE,
|
||||
+ },
|
||||
+ {
|
||||
+ .flags = QCE_ALG_3DES | QCE_MODE_CBC,
|
||||
+ .name = "cbc(des3_ede)",
|
||||
+ .drv_name = "cbc-3des-qce",
|
||||
+ .blocksize = DES3_EDE_BLOCK_SIZE,
|
||||
+ .ivsize = DES3_EDE_BLOCK_SIZE,
|
||||
+ .min_keysize = DES3_EDE_KEY_SIZE,
|
||||
+ .max_keysize = DES3_EDE_KEY_SIZE,
|
||||
+ },
|
||||
+};
|
||||
+
|
||||
+static int qce_skcipher_register_one(const struct qce_skcipher_def *def,
|
||||
+ struct qce_device *qce)
|
||||
+{
|
||||
+ struct qce_alg_template *tmpl;
|
||||
+ struct skcipher_alg *alg;
|
||||
+ int ret;
|
||||
+
|
||||
+ tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL);
|
||||
+ if (!tmpl)
|
||||
+ return -ENOMEM;
|
||||
+
|
||||
+ alg = &tmpl->alg.skcipher;
|
||||
+
|
||||
+ snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
|
||||
+ snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
|
||||
+ def->drv_name);
|
||||
+
|
||||
+ alg->base.cra_blocksize = def->blocksize;
|
||||
+ alg->ivsize = def->ivsize;
|
||||
+ alg->min_keysize = def->min_keysize;
|
||||
+ alg->max_keysize = def->max_keysize;
|
||||
+ alg->setkey = IS_3DES(def->flags) ? qce_des3_setkey :
|
||||
+ IS_DES(def->flags) ? qce_des_setkey :
|
||||
+ qce_skcipher_setkey;
|
||||
+ alg->encrypt = qce_skcipher_encrypt;
|
||||
+ alg->decrypt = qce_skcipher_decrypt;
|
||||
+
|
||||
+ alg->base.cra_priority = 300;
|
||||
+ alg->base.cra_flags = CRYPTO_ALG_ASYNC |
|
||||
+ CRYPTO_ALG_NEED_FALLBACK |
|
||||
+ CRYPTO_ALG_KERN_DRIVER_ONLY;
|
||||
+ alg->base.cra_ctxsize = sizeof(struct qce_cipher_ctx);
|
||||
+ alg->base.cra_alignmask = 0;
|
||||
+ alg->base.cra_module = THIS_MODULE;
|
||||
+
|
||||
+ alg->init = qce_skcipher_init;
|
||||
+ alg->exit = qce_skcipher_exit;
|
||||
+
|
||||
+ INIT_LIST_HEAD(&tmpl->entry);
|
||||
+ tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_SKCIPHER;
|
||||
+ tmpl->alg_flags = def->flags;
|
||||
+ tmpl->qce = qce;
|
||||
+
|
||||
+ ret = crypto_register_skcipher(alg);
|
||||
+ if (ret) {
|
||||
+ kfree(tmpl);
|
||||
+ dev_err(qce->dev, "%s registration failed\n", alg->base.cra_name);
|
||||
+ return ret;
|
||||
+ }
|
||||
+
|
||||
+ list_add_tail(&tmpl->entry, &skcipher_algs);
|
||||
+ dev_dbg(qce->dev, "%s is registered\n", alg->base.cra_name);
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static void qce_skcipher_unregister(struct qce_device *qce)
|
||||
+{
|
||||
+ struct qce_alg_template *tmpl, *n;
|
||||
+
|
||||
+ list_for_each_entry_safe(tmpl, n, &skcipher_algs, entry) {
|
||||
+ crypto_unregister_skcipher(&tmpl->alg.skcipher);
|
||||
+ list_del(&tmpl->entry);
|
||||
+ kfree(tmpl);
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+static int qce_skcipher_register(struct qce_device *qce)
|
||||
+{
|
||||
+ int ret, i;
|
||||
+
|
||||
+ for (i = 0; i < ARRAY_SIZE(skcipher_def); i++) {
|
||||
+ ret = qce_skcipher_register_one(&skcipher_def[i], qce);
|
||||
+ if (ret)
|
||||
+ goto err;
|
||||
+ }
|
||||
+
|
||||
+ return 0;
|
||||
+err:
|
||||
+ qce_skcipher_unregister(qce);
|
||||
+ return ret;
|
||||
+}
|
||||
+
|
||||
+const struct qce_algo_ops skcipher_ops = {
|
||||
+ .type = CRYPTO_ALG_TYPE_SKCIPHER,
|
||||
+ .register_algs = qce_skcipher_register,
|
||||
+ .unregister_algs = qce_skcipher_unregister,
|
||||
+ .async_req_handle = qce_skcipher_async_req_handle,
|
||||
+};
|
||||
Loading…
Reference in New Issue