1744 lines
45 KiB
C
1744 lines
45 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Marvell OcteonTX CPT driver
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*
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* Copyright (C) 2019 Marvell International Ltd.
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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 as
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* published by the Free Software Foundation.
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*/
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#include <crypto/aes.h>
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#include <crypto/authenc.h>
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#include <crypto/cryptd.h>
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#include <crypto/des.h>
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#include <crypto/internal/aead.h>
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#include <crypto/sha1.h>
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#include <crypto/sha2.h>
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#include <crypto/xts.h>
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#include <crypto/scatterwalk.h>
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#include <linux/rtnetlink.h>
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#include <linux/sort.h>
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#include <linux/module.h>
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#include "otx_cptvf.h"
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#include "otx_cptvf_algs.h"
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#include "otx_cptvf_reqmgr.h"
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#define CPT_MAX_VF_NUM 64
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/* Size of salt in AES GCM mode */
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#define AES_GCM_SALT_SIZE 4
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/* Size of IV in AES GCM mode */
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#define AES_GCM_IV_SIZE 8
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/* Size of ICV (Integrity Check Value) in AES GCM mode */
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#define AES_GCM_ICV_SIZE 16
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/* Offset of IV in AES GCM mode */
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#define AES_GCM_IV_OFFSET 8
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#define CONTROL_WORD_LEN 8
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#define KEY2_OFFSET 48
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#define DMA_MODE_FLAG(dma_mode) \
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(((dma_mode) == OTX_CPT_DMA_GATHER_SCATTER) ? (1 << 7) : 0)
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/* Truncated SHA digest size */
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#define SHA1_TRUNC_DIGEST_SIZE 12
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#define SHA256_TRUNC_DIGEST_SIZE 16
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#define SHA384_TRUNC_DIGEST_SIZE 24
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#define SHA512_TRUNC_DIGEST_SIZE 32
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static DEFINE_MUTEX(mutex);
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static int is_crypto_registered;
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struct cpt_device_desc {
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enum otx_cptpf_type pf_type;
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struct pci_dev *dev;
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int num_queues;
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};
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struct cpt_device_table {
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atomic_t count;
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struct cpt_device_desc desc[CPT_MAX_VF_NUM];
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};
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static struct cpt_device_table se_devices = {
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.count = ATOMIC_INIT(0)
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};
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static struct cpt_device_table ae_devices = {
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.count = ATOMIC_INIT(0)
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};
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static inline int get_se_device(struct pci_dev **pdev, int *cpu_num)
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{
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int count, ret = 0;
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count = atomic_read(&se_devices.count);
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if (count < 1)
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return -ENODEV;
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*cpu_num = get_cpu();
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if (se_devices.desc[0].pf_type == OTX_CPT_SE) {
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/*
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* On OcteonTX platform there is one CPT instruction queue bound
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* to each VF. We get maximum performance if one CPT queue
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* is available for each cpu otherwise CPT queues need to be
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* shared between cpus.
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*/
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if (*cpu_num >= count)
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*cpu_num %= count;
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*pdev = se_devices.desc[*cpu_num].dev;
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} else {
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pr_err("Unknown PF type %d\n", se_devices.desc[0].pf_type);
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ret = -EINVAL;
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}
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put_cpu();
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return ret;
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}
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static inline int validate_hmac_cipher_null(struct otx_cpt_req_info *cpt_req)
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{
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struct otx_cpt_req_ctx *rctx;
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struct aead_request *req;
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struct crypto_aead *tfm;
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req = container_of(cpt_req->areq, struct aead_request, base);
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tfm = crypto_aead_reqtfm(req);
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rctx = aead_request_ctx_dma(req);
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if (memcmp(rctx->fctx.hmac.s.hmac_calc,
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rctx->fctx.hmac.s.hmac_recv,
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crypto_aead_authsize(tfm)) != 0)
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return -EBADMSG;
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return 0;
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}
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static void otx_cpt_aead_callback(int status, void *arg1, void *arg2)
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{
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struct otx_cpt_info_buffer *cpt_info = arg2;
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struct crypto_async_request *areq = arg1;
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struct otx_cpt_req_info *cpt_req;
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struct pci_dev *pdev;
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if (!cpt_info)
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goto complete;
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cpt_req = cpt_info->req;
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if (!status) {
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/*
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* When selected cipher is NULL we need to manually
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* verify whether calculated hmac value matches
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* received hmac value
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*/
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if (cpt_req->req_type == OTX_CPT_AEAD_ENC_DEC_NULL_REQ &&
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!cpt_req->is_enc)
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status = validate_hmac_cipher_null(cpt_req);
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}
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pdev = cpt_info->pdev;
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do_request_cleanup(pdev, cpt_info);
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complete:
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if (areq)
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crypto_request_complete(areq, status);
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}
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static void output_iv_copyback(struct crypto_async_request *areq)
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{
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struct otx_cpt_req_info *req_info;
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struct skcipher_request *sreq;
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struct crypto_skcipher *stfm;
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struct otx_cpt_req_ctx *rctx;
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struct otx_cpt_enc_ctx *ctx;
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u32 start, ivsize;
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sreq = container_of(areq, struct skcipher_request, base);
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stfm = crypto_skcipher_reqtfm(sreq);
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ctx = crypto_skcipher_ctx(stfm);
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if (ctx->cipher_type == OTX_CPT_AES_CBC ||
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ctx->cipher_type == OTX_CPT_DES3_CBC) {
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rctx = skcipher_request_ctx_dma(sreq);
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req_info = &rctx->cpt_req;
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ivsize = crypto_skcipher_ivsize(stfm);
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start = sreq->cryptlen - ivsize;
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if (req_info->is_enc) {
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scatterwalk_map_and_copy(sreq->iv, sreq->dst, start,
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ivsize, 0);
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} else {
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if (sreq->src != sreq->dst) {
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scatterwalk_map_and_copy(sreq->iv, sreq->src,
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start, ivsize, 0);
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} else {
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memcpy(sreq->iv, req_info->iv_out, ivsize);
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kfree(req_info->iv_out);
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}
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}
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}
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}
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static void otx_cpt_skcipher_callback(int status, void *arg1, void *arg2)
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{
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struct otx_cpt_info_buffer *cpt_info = arg2;
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struct crypto_async_request *areq = arg1;
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struct pci_dev *pdev;
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if (areq) {
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if (!status)
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output_iv_copyback(areq);
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if (cpt_info) {
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pdev = cpt_info->pdev;
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do_request_cleanup(pdev, cpt_info);
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}
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crypto_request_complete(areq, status);
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}
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}
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static inline void update_input_data(struct otx_cpt_req_info *req_info,
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struct scatterlist *inp_sg,
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u32 nbytes, u32 *argcnt)
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{
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req_info->req.dlen += nbytes;
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while (nbytes) {
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u32 len = min(nbytes, inp_sg->length);
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u8 *ptr = sg_virt(inp_sg);
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req_info->in[*argcnt].vptr = (void *)ptr;
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req_info->in[*argcnt].size = len;
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nbytes -= len;
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++(*argcnt);
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inp_sg = sg_next(inp_sg);
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}
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}
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static inline void update_output_data(struct otx_cpt_req_info *req_info,
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struct scatterlist *outp_sg,
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u32 offset, u32 nbytes, u32 *argcnt)
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{
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req_info->rlen += nbytes;
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while (nbytes) {
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u32 len = min(nbytes, outp_sg->length - offset);
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u8 *ptr = sg_virt(outp_sg);
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req_info->out[*argcnt].vptr = (void *) (ptr + offset);
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req_info->out[*argcnt].size = len;
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nbytes -= len;
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++(*argcnt);
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offset = 0;
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outp_sg = sg_next(outp_sg);
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}
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}
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static inline u32 create_ctx_hdr(struct skcipher_request *req, u32 enc,
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u32 *argcnt)
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{
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struct crypto_skcipher *stfm = crypto_skcipher_reqtfm(req);
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struct otx_cpt_req_ctx *rctx = skcipher_request_ctx_dma(req);
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struct otx_cpt_req_info *req_info = &rctx->cpt_req;
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struct crypto_tfm *tfm = crypto_skcipher_tfm(stfm);
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struct otx_cpt_enc_ctx *ctx = crypto_tfm_ctx(tfm);
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struct otx_cpt_fc_ctx *fctx = &rctx->fctx;
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int ivsize = crypto_skcipher_ivsize(stfm);
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u32 start = req->cryptlen - ivsize;
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gfp_t flags;
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flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
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GFP_KERNEL : GFP_ATOMIC;
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req_info->ctrl.s.dma_mode = OTX_CPT_DMA_GATHER_SCATTER;
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req_info->ctrl.s.se_req = OTX_CPT_SE_CORE_REQ;
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req_info->req.opcode.s.major = OTX_CPT_MAJOR_OP_FC |
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DMA_MODE_FLAG(OTX_CPT_DMA_GATHER_SCATTER);
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if (enc) {
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req_info->req.opcode.s.minor = 2;
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} else {
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req_info->req.opcode.s.minor = 3;
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if ((ctx->cipher_type == OTX_CPT_AES_CBC ||
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ctx->cipher_type == OTX_CPT_DES3_CBC) &&
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req->src == req->dst) {
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req_info->iv_out = kmalloc(ivsize, flags);
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if (!req_info->iv_out)
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return -ENOMEM;
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scatterwalk_map_and_copy(req_info->iv_out, req->src,
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start, ivsize, 0);
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}
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}
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/* Encryption data length */
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req_info->req.param1 = req->cryptlen;
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/* Authentication data length */
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req_info->req.param2 = 0;
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fctx->enc.enc_ctrl.e.enc_cipher = ctx->cipher_type;
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fctx->enc.enc_ctrl.e.aes_key = ctx->key_type;
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fctx->enc.enc_ctrl.e.iv_source = OTX_CPT_FROM_CPTR;
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if (ctx->cipher_type == OTX_CPT_AES_XTS)
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memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len * 2);
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else
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memcpy(fctx->enc.encr_key, ctx->enc_key, ctx->key_len);
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memcpy(fctx->enc.encr_iv, req->iv, crypto_skcipher_ivsize(stfm));
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fctx->enc.enc_ctrl.flags = cpu_to_be64(fctx->enc.enc_ctrl.cflags);
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/*
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* Storing Packet Data Information in offset
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* Control Word First 8 bytes
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*/
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req_info->in[*argcnt].vptr = (u8 *)&rctx->ctrl_word;
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req_info->in[*argcnt].size = CONTROL_WORD_LEN;
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req_info->req.dlen += CONTROL_WORD_LEN;
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++(*argcnt);
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req_info->in[*argcnt].vptr = (u8 *)fctx;
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req_info->in[*argcnt].size = sizeof(struct otx_cpt_fc_ctx);
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req_info->req.dlen += sizeof(struct otx_cpt_fc_ctx);
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++(*argcnt);
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return 0;
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}
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static inline u32 create_input_list(struct skcipher_request *req, u32 enc,
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u32 enc_iv_len)
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{
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struct otx_cpt_req_ctx *rctx = skcipher_request_ctx_dma(req);
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struct otx_cpt_req_info *req_info = &rctx->cpt_req;
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u32 argcnt = 0;
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int ret;
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ret = create_ctx_hdr(req, enc, &argcnt);
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if (ret)
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return ret;
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update_input_data(req_info, req->src, req->cryptlen, &argcnt);
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req_info->incnt = argcnt;
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return 0;
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}
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static inline void create_output_list(struct skcipher_request *req,
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u32 enc_iv_len)
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{
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struct otx_cpt_req_ctx *rctx = skcipher_request_ctx_dma(req);
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struct otx_cpt_req_info *req_info = &rctx->cpt_req;
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u32 argcnt = 0;
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/*
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* OUTPUT Buffer Processing
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* AES encryption/decryption output would be
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* received in the following format
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*
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* ------IV--------|------ENCRYPTED/DECRYPTED DATA-----|
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* [ 16 Bytes/ [ Request Enc/Dec/ DATA Len AES CBC ]
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*/
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update_output_data(req_info, req->dst, 0, req->cryptlen, &argcnt);
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req_info->outcnt = argcnt;
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}
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static inline int cpt_enc_dec(struct skcipher_request *req, u32 enc)
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{
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struct crypto_skcipher *stfm = crypto_skcipher_reqtfm(req);
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struct otx_cpt_req_ctx *rctx = skcipher_request_ctx_dma(req);
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struct otx_cpt_req_info *req_info = &rctx->cpt_req;
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u32 enc_iv_len = crypto_skcipher_ivsize(stfm);
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struct pci_dev *pdev;
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int status, cpu_num;
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/* Validate that request doesn't exceed maximum CPT supported size */
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if (req->cryptlen > OTX_CPT_MAX_REQ_SIZE)
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return -E2BIG;
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/* Clear control words */
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rctx->ctrl_word.flags = 0;
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rctx->fctx.enc.enc_ctrl.flags = 0;
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status = create_input_list(req, enc, enc_iv_len);
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if (status)
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return status;
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create_output_list(req, enc_iv_len);
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status = get_se_device(&pdev, &cpu_num);
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if (status)
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return status;
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req_info->callback = (void *)otx_cpt_skcipher_callback;
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req_info->areq = &req->base;
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req_info->req_type = OTX_CPT_ENC_DEC_REQ;
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req_info->is_enc = enc;
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req_info->is_trunc_hmac = false;
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req_info->ctrl.s.grp = 0;
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/*
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* We perform an asynchronous send and once
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* the request is completed the driver would
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* intimate through registered call back functions
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*/
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status = otx_cpt_do_request(pdev, req_info, cpu_num);
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return status;
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}
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static int otx_cpt_skcipher_encrypt(struct skcipher_request *req)
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{
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return cpt_enc_dec(req, true);
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}
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static int otx_cpt_skcipher_decrypt(struct skcipher_request *req)
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{
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return cpt_enc_dec(req, false);
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}
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static int otx_cpt_skcipher_xts_setkey(struct crypto_skcipher *tfm,
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const u8 *key, u32 keylen)
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{
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struct otx_cpt_enc_ctx *ctx = crypto_skcipher_ctx(tfm);
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const u8 *key2 = key + (keylen / 2);
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const u8 *key1 = key;
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int ret;
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ret = xts_verify_key(tfm, key, keylen);
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if (ret)
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return ret;
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ctx->key_len = keylen;
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memcpy(ctx->enc_key, key1, keylen / 2);
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memcpy(ctx->enc_key + KEY2_OFFSET, key2, keylen / 2);
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ctx->cipher_type = OTX_CPT_AES_XTS;
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switch (ctx->key_len) {
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case 2 * AES_KEYSIZE_128:
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ctx->key_type = OTX_CPT_AES_128_BIT;
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break;
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case 2 * AES_KEYSIZE_256:
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ctx->key_type = OTX_CPT_AES_256_BIT;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int cpt_des_setkey(struct crypto_skcipher *tfm, const u8 *key,
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u32 keylen, u8 cipher_type)
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{
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struct otx_cpt_enc_ctx *ctx = crypto_skcipher_ctx(tfm);
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if (keylen != DES3_EDE_KEY_SIZE)
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return -EINVAL;
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ctx->key_len = keylen;
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ctx->cipher_type = cipher_type;
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memcpy(ctx->enc_key, key, keylen);
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return 0;
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}
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static int cpt_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
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u32 keylen, u8 cipher_type)
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{
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struct otx_cpt_enc_ctx *ctx = crypto_skcipher_ctx(tfm);
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switch (keylen) {
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case AES_KEYSIZE_128:
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ctx->key_type = OTX_CPT_AES_128_BIT;
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break;
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case AES_KEYSIZE_192:
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ctx->key_type = OTX_CPT_AES_192_BIT;
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break;
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case AES_KEYSIZE_256:
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ctx->key_type = OTX_CPT_AES_256_BIT;
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break;
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default:
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return -EINVAL;
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}
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ctx->key_len = keylen;
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ctx->cipher_type = cipher_type;
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memcpy(ctx->enc_key, key, keylen);
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return 0;
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}
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static int otx_cpt_skcipher_cbc_aes_setkey(struct crypto_skcipher *tfm,
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const u8 *key, u32 keylen)
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{
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return cpt_aes_setkey(tfm, key, keylen, OTX_CPT_AES_CBC);
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}
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static int otx_cpt_skcipher_ecb_aes_setkey(struct crypto_skcipher *tfm,
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const u8 *key, u32 keylen)
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{
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return cpt_aes_setkey(tfm, key, keylen, OTX_CPT_AES_ECB);
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}
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static int otx_cpt_skcipher_cfb_aes_setkey(struct crypto_skcipher *tfm,
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const u8 *key, u32 keylen)
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{
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return cpt_aes_setkey(tfm, key, keylen, OTX_CPT_AES_CFB);
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}
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|
static int otx_cpt_skcipher_cbc_des3_setkey(struct crypto_skcipher *tfm,
|
|
const u8 *key, u32 keylen)
|
|
{
|
|
return cpt_des_setkey(tfm, key, keylen, OTX_CPT_DES3_CBC);
|
|
}
|
|
|
|
static int otx_cpt_skcipher_ecb_des3_setkey(struct crypto_skcipher *tfm,
|
|
const u8 *key, u32 keylen)
|
|
{
|
|
return cpt_des_setkey(tfm, key, keylen, OTX_CPT_DES3_ECB);
|
|
}
|
|
|
|
static int otx_cpt_enc_dec_init(struct crypto_skcipher *tfm)
|
|
{
|
|
struct otx_cpt_enc_ctx *ctx = crypto_skcipher_ctx(tfm);
|
|
|
|
memset(ctx, 0, sizeof(*ctx));
|
|
/*
|
|
* Additional memory for skcipher_request is
|
|
* allocated since the cryptd daemon uses
|
|
* this memory for request_ctx information
|
|
*/
|
|
crypto_skcipher_set_reqsize_dma(
|
|
tfm, sizeof(struct otx_cpt_req_ctx) +
|
|
sizeof(struct skcipher_request));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cpt_aead_init(struct crypto_aead *tfm, u8 cipher_type, u8 mac_type)
|
|
{
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(tfm);
|
|
|
|
ctx->cipher_type = cipher_type;
|
|
ctx->mac_type = mac_type;
|
|
|
|
/*
|
|
* When selected cipher is NULL we use HMAC opcode instead of
|
|
* FLEXICRYPTO opcode therefore we don't need to use HASH algorithms
|
|
* for calculating ipad and opad
|
|
*/
|
|
if (ctx->cipher_type != OTX_CPT_CIPHER_NULL) {
|
|
switch (ctx->mac_type) {
|
|
case OTX_CPT_SHA1:
|
|
ctx->hashalg = crypto_alloc_shash("sha1", 0,
|
|
CRYPTO_ALG_ASYNC);
|
|
if (IS_ERR(ctx->hashalg))
|
|
return PTR_ERR(ctx->hashalg);
|
|
break;
|
|
|
|
case OTX_CPT_SHA256:
|
|
ctx->hashalg = crypto_alloc_shash("sha256", 0,
|
|
CRYPTO_ALG_ASYNC);
|
|
if (IS_ERR(ctx->hashalg))
|
|
return PTR_ERR(ctx->hashalg);
|
|
break;
|
|
|
|
case OTX_CPT_SHA384:
|
|
ctx->hashalg = crypto_alloc_shash("sha384", 0,
|
|
CRYPTO_ALG_ASYNC);
|
|
if (IS_ERR(ctx->hashalg))
|
|
return PTR_ERR(ctx->hashalg);
|
|
break;
|
|
|
|
case OTX_CPT_SHA512:
|
|
ctx->hashalg = crypto_alloc_shash("sha512", 0,
|
|
CRYPTO_ALG_ASYNC);
|
|
if (IS_ERR(ctx->hashalg))
|
|
return PTR_ERR(ctx->hashalg);
|
|
break;
|
|
}
|
|
}
|
|
|
|
crypto_aead_set_reqsize_dma(tfm, sizeof(struct otx_cpt_req_ctx));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int otx_cpt_aead_cbc_aes_sha1_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_AES_CBC, OTX_CPT_SHA1);
|
|
}
|
|
|
|
static int otx_cpt_aead_cbc_aes_sha256_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_AES_CBC, OTX_CPT_SHA256);
|
|
}
|
|
|
|
static int otx_cpt_aead_cbc_aes_sha384_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_AES_CBC, OTX_CPT_SHA384);
|
|
}
|
|
|
|
static int otx_cpt_aead_cbc_aes_sha512_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_AES_CBC, OTX_CPT_SHA512);
|
|
}
|
|
|
|
static int otx_cpt_aead_ecb_null_sha1_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_CIPHER_NULL, OTX_CPT_SHA1);
|
|
}
|
|
|
|
static int otx_cpt_aead_ecb_null_sha256_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_CIPHER_NULL, OTX_CPT_SHA256);
|
|
}
|
|
|
|
static int otx_cpt_aead_ecb_null_sha384_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_CIPHER_NULL, OTX_CPT_SHA384);
|
|
}
|
|
|
|
static int otx_cpt_aead_ecb_null_sha512_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_CIPHER_NULL, OTX_CPT_SHA512);
|
|
}
|
|
|
|
static int otx_cpt_aead_gcm_aes_init(struct crypto_aead *tfm)
|
|
{
|
|
return cpt_aead_init(tfm, OTX_CPT_AES_GCM, OTX_CPT_MAC_NULL);
|
|
}
|
|
|
|
static void otx_cpt_aead_exit(struct crypto_aead *tfm)
|
|
{
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(tfm);
|
|
|
|
kfree(ctx->ipad);
|
|
kfree(ctx->opad);
|
|
if (ctx->hashalg)
|
|
crypto_free_shash(ctx->hashalg);
|
|
kfree(ctx->sdesc);
|
|
}
|
|
|
|
/*
|
|
* This is the Integrity Check Value validation (aka the authentication tag
|
|
* length)
|
|
*/
|
|
static int otx_cpt_aead_set_authsize(struct crypto_aead *tfm,
|
|
unsigned int authsize)
|
|
{
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(tfm);
|
|
|
|
switch (ctx->mac_type) {
|
|
case OTX_CPT_SHA1:
|
|
if (authsize != SHA1_DIGEST_SIZE &&
|
|
authsize != SHA1_TRUNC_DIGEST_SIZE)
|
|
return -EINVAL;
|
|
|
|
if (authsize == SHA1_TRUNC_DIGEST_SIZE)
|
|
ctx->is_trunc_hmac = true;
|
|
break;
|
|
|
|
case OTX_CPT_SHA256:
|
|
if (authsize != SHA256_DIGEST_SIZE &&
|
|
authsize != SHA256_TRUNC_DIGEST_SIZE)
|
|
return -EINVAL;
|
|
|
|
if (authsize == SHA256_TRUNC_DIGEST_SIZE)
|
|
ctx->is_trunc_hmac = true;
|
|
break;
|
|
|
|
case OTX_CPT_SHA384:
|
|
if (authsize != SHA384_DIGEST_SIZE &&
|
|
authsize != SHA384_TRUNC_DIGEST_SIZE)
|
|
return -EINVAL;
|
|
|
|
if (authsize == SHA384_TRUNC_DIGEST_SIZE)
|
|
ctx->is_trunc_hmac = true;
|
|
break;
|
|
|
|
case OTX_CPT_SHA512:
|
|
if (authsize != SHA512_DIGEST_SIZE &&
|
|
authsize != SHA512_TRUNC_DIGEST_SIZE)
|
|
return -EINVAL;
|
|
|
|
if (authsize == SHA512_TRUNC_DIGEST_SIZE)
|
|
ctx->is_trunc_hmac = true;
|
|
break;
|
|
|
|
case OTX_CPT_MAC_NULL:
|
|
if (ctx->cipher_type == OTX_CPT_AES_GCM) {
|
|
if (authsize != AES_GCM_ICV_SIZE)
|
|
return -EINVAL;
|
|
} else
|
|
return -EINVAL;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
tfm->authsize = authsize;
|
|
return 0;
|
|
}
|
|
|
|
static struct otx_cpt_sdesc *alloc_sdesc(struct crypto_shash *alg)
|
|
{
|
|
struct otx_cpt_sdesc *sdesc;
|
|
int size;
|
|
|
|
size = sizeof(struct shash_desc) + crypto_shash_descsize(alg);
|
|
sdesc = kmalloc(size, GFP_KERNEL);
|
|
if (!sdesc)
|
|
return NULL;
|
|
|
|
sdesc->shash.tfm = alg;
|
|
|
|
return sdesc;
|
|
}
|
|
|
|
static inline void swap_data32(void *buf, u32 len)
|
|
{
|
|
cpu_to_be32_array(buf, buf, len / 4);
|
|
}
|
|
|
|
static inline void swap_data64(void *buf, u32 len)
|
|
{
|
|
__be64 *dst = buf;
|
|
u64 *src = buf;
|
|
int i = 0;
|
|
|
|
for (i = 0 ; i < len / 8; i++, src++, dst++)
|
|
*dst = cpu_to_be64p(src);
|
|
}
|
|
|
|
static int copy_pad(u8 mac_type, u8 *out_pad, u8 *in_pad)
|
|
{
|
|
struct sha512_state *sha512;
|
|
struct sha256_state *sha256;
|
|
struct sha1_state *sha1;
|
|
|
|
switch (mac_type) {
|
|
case OTX_CPT_SHA1:
|
|
sha1 = (struct sha1_state *) in_pad;
|
|
swap_data32(sha1->state, SHA1_DIGEST_SIZE);
|
|
memcpy(out_pad, &sha1->state, SHA1_DIGEST_SIZE);
|
|
break;
|
|
|
|
case OTX_CPT_SHA256:
|
|
sha256 = (struct sha256_state *) in_pad;
|
|
swap_data32(sha256->state, SHA256_DIGEST_SIZE);
|
|
memcpy(out_pad, &sha256->state, SHA256_DIGEST_SIZE);
|
|
break;
|
|
|
|
case OTX_CPT_SHA384:
|
|
case OTX_CPT_SHA512:
|
|
sha512 = (struct sha512_state *) in_pad;
|
|
swap_data64(sha512->state, SHA512_DIGEST_SIZE);
|
|
memcpy(out_pad, &sha512->state, SHA512_DIGEST_SIZE);
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int aead_hmac_init(struct crypto_aead *cipher)
|
|
{
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(cipher);
|
|
int state_size = crypto_shash_statesize(ctx->hashalg);
|
|
int ds = crypto_shash_digestsize(ctx->hashalg);
|
|
int bs = crypto_shash_blocksize(ctx->hashalg);
|
|
int authkeylen = ctx->auth_key_len;
|
|
u8 *ipad = NULL, *opad = NULL;
|
|
int ret = 0, icount = 0;
|
|
|
|
ctx->sdesc = alloc_sdesc(ctx->hashalg);
|
|
if (!ctx->sdesc)
|
|
return -ENOMEM;
|
|
|
|
ctx->ipad = kzalloc(bs, GFP_KERNEL);
|
|
if (!ctx->ipad) {
|
|
ret = -ENOMEM;
|
|
goto calc_fail;
|
|
}
|
|
|
|
ctx->opad = kzalloc(bs, GFP_KERNEL);
|
|
if (!ctx->opad) {
|
|
ret = -ENOMEM;
|
|
goto calc_fail;
|
|
}
|
|
|
|
ipad = kzalloc(state_size, GFP_KERNEL);
|
|
if (!ipad) {
|
|
ret = -ENOMEM;
|
|
goto calc_fail;
|
|
}
|
|
|
|
opad = kzalloc(state_size, GFP_KERNEL);
|
|
if (!opad) {
|
|
ret = -ENOMEM;
|
|
goto calc_fail;
|
|
}
|
|
|
|
if (authkeylen > bs) {
|
|
ret = crypto_shash_digest(&ctx->sdesc->shash, ctx->key,
|
|
authkeylen, ipad);
|
|
if (ret)
|
|
goto calc_fail;
|
|
|
|
authkeylen = ds;
|
|
} else {
|
|
memcpy(ipad, ctx->key, authkeylen);
|
|
}
|
|
|
|
memset(ipad + authkeylen, 0, bs - authkeylen);
|
|
memcpy(opad, ipad, bs);
|
|
|
|
for (icount = 0; icount < bs; icount++) {
|
|
ipad[icount] ^= 0x36;
|
|
opad[icount] ^= 0x5c;
|
|
}
|
|
|
|
/*
|
|
* Partial Hash calculated from the software
|
|
* algorithm is retrieved for IPAD & OPAD
|
|
*/
|
|
|
|
/* IPAD Calculation */
|
|
crypto_shash_init(&ctx->sdesc->shash);
|
|
crypto_shash_update(&ctx->sdesc->shash, ipad, bs);
|
|
crypto_shash_export(&ctx->sdesc->shash, ipad);
|
|
ret = copy_pad(ctx->mac_type, ctx->ipad, ipad);
|
|
if (ret)
|
|
goto calc_fail;
|
|
|
|
/* OPAD Calculation */
|
|
crypto_shash_init(&ctx->sdesc->shash);
|
|
crypto_shash_update(&ctx->sdesc->shash, opad, bs);
|
|
crypto_shash_export(&ctx->sdesc->shash, opad);
|
|
ret = copy_pad(ctx->mac_type, ctx->opad, opad);
|
|
if (ret)
|
|
goto calc_fail;
|
|
|
|
kfree(ipad);
|
|
kfree(opad);
|
|
|
|
return 0;
|
|
|
|
calc_fail:
|
|
kfree(ctx->ipad);
|
|
ctx->ipad = NULL;
|
|
kfree(ctx->opad);
|
|
ctx->opad = NULL;
|
|
kfree(ipad);
|
|
kfree(opad);
|
|
kfree(ctx->sdesc);
|
|
ctx->sdesc = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int otx_cpt_aead_cbc_aes_sha_setkey(struct crypto_aead *cipher,
|
|
const unsigned char *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(cipher);
|
|
struct crypto_authenc_key_param *param;
|
|
int enckeylen = 0, authkeylen = 0;
|
|
struct rtattr *rta = (void *)key;
|
|
int status = -EINVAL;
|
|
|
|
if (!RTA_OK(rta, keylen))
|
|
goto badkey;
|
|
|
|
if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
|
|
goto badkey;
|
|
|
|
if (RTA_PAYLOAD(rta) < sizeof(*param))
|
|
goto badkey;
|
|
|
|
param = RTA_DATA(rta);
|
|
enckeylen = be32_to_cpu(param->enckeylen);
|
|
key += RTA_ALIGN(rta->rta_len);
|
|
keylen -= RTA_ALIGN(rta->rta_len);
|
|
if (keylen < enckeylen)
|
|
goto badkey;
|
|
|
|
if (keylen > OTX_CPT_MAX_KEY_SIZE)
|
|
goto badkey;
|
|
|
|
authkeylen = keylen - enckeylen;
|
|
memcpy(ctx->key, key, keylen);
|
|
|
|
switch (enckeylen) {
|
|
case AES_KEYSIZE_128:
|
|
ctx->key_type = OTX_CPT_AES_128_BIT;
|
|
break;
|
|
case AES_KEYSIZE_192:
|
|
ctx->key_type = OTX_CPT_AES_192_BIT;
|
|
break;
|
|
case AES_KEYSIZE_256:
|
|
ctx->key_type = OTX_CPT_AES_256_BIT;
|
|
break;
|
|
default:
|
|
/* Invalid key length */
|
|
goto badkey;
|
|
}
|
|
|
|
ctx->enc_key_len = enckeylen;
|
|
ctx->auth_key_len = authkeylen;
|
|
|
|
status = aead_hmac_init(cipher);
|
|
if (status)
|
|
goto badkey;
|
|
|
|
return 0;
|
|
badkey:
|
|
return status;
|
|
}
|
|
|
|
static int otx_cpt_aead_ecb_null_sha_setkey(struct crypto_aead *cipher,
|
|
const unsigned char *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(cipher);
|
|
struct crypto_authenc_key_param *param;
|
|
struct rtattr *rta = (void *)key;
|
|
int enckeylen = 0;
|
|
|
|
if (!RTA_OK(rta, keylen))
|
|
goto badkey;
|
|
|
|
if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
|
|
goto badkey;
|
|
|
|
if (RTA_PAYLOAD(rta) < sizeof(*param))
|
|
goto badkey;
|
|
|
|
param = RTA_DATA(rta);
|
|
enckeylen = be32_to_cpu(param->enckeylen);
|
|
key += RTA_ALIGN(rta->rta_len);
|
|
keylen -= RTA_ALIGN(rta->rta_len);
|
|
if (enckeylen != 0)
|
|
goto badkey;
|
|
|
|
if (keylen > OTX_CPT_MAX_KEY_SIZE)
|
|
goto badkey;
|
|
|
|
memcpy(ctx->key, key, keylen);
|
|
ctx->enc_key_len = enckeylen;
|
|
ctx->auth_key_len = keylen;
|
|
return 0;
|
|
badkey:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int otx_cpt_aead_gcm_aes_setkey(struct crypto_aead *cipher,
|
|
const unsigned char *key,
|
|
unsigned int keylen)
|
|
{
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(cipher);
|
|
|
|
/*
|
|
* For aes gcm we expect to get encryption key (16, 24, 32 bytes)
|
|
* and salt (4 bytes)
|
|
*/
|
|
switch (keylen) {
|
|
case AES_KEYSIZE_128 + AES_GCM_SALT_SIZE:
|
|
ctx->key_type = OTX_CPT_AES_128_BIT;
|
|
ctx->enc_key_len = AES_KEYSIZE_128;
|
|
break;
|
|
case AES_KEYSIZE_192 + AES_GCM_SALT_SIZE:
|
|
ctx->key_type = OTX_CPT_AES_192_BIT;
|
|
ctx->enc_key_len = AES_KEYSIZE_192;
|
|
break;
|
|
case AES_KEYSIZE_256 + AES_GCM_SALT_SIZE:
|
|
ctx->key_type = OTX_CPT_AES_256_BIT;
|
|
ctx->enc_key_len = AES_KEYSIZE_256;
|
|
break;
|
|
default:
|
|
/* Invalid key and salt length */
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Store encryption key and salt */
|
|
memcpy(ctx->key, key, keylen);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline u32 create_aead_ctx_hdr(struct aead_request *req, u32 enc,
|
|
u32 *argcnt)
|
|
{
|
|
struct otx_cpt_req_ctx *rctx = aead_request_ctx_dma(req);
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(tfm);
|
|
struct otx_cpt_req_info *req_info = &rctx->cpt_req;
|
|
struct otx_cpt_fc_ctx *fctx = &rctx->fctx;
|
|
int mac_len = crypto_aead_authsize(tfm);
|
|
int ds;
|
|
|
|
rctx->ctrl_word.e.enc_data_offset = req->assoclen;
|
|
|
|
switch (ctx->cipher_type) {
|
|
case OTX_CPT_AES_CBC:
|
|
fctx->enc.enc_ctrl.e.iv_source = OTX_CPT_FROM_CPTR;
|
|
/* Copy encryption key to context */
|
|
memcpy(fctx->enc.encr_key, ctx->key + ctx->auth_key_len,
|
|
ctx->enc_key_len);
|
|
/* Copy IV to context */
|
|
memcpy(fctx->enc.encr_iv, req->iv, crypto_aead_ivsize(tfm));
|
|
|
|
ds = crypto_shash_digestsize(ctx->hashalg);
|
|
if (ctx->mac_type == OTX_CPT_SHA384)
|
|
ds = SHA512_DIGEST_SIZE;
|
|
if (ctx->ipad)
|
|
memcpy(fctx->hmac.e.ipad, ctx->ipad, ds);
|
|
if (ctx->opad)
|
|
memcpy(fctx->hmac.e.opad, ctx->opad, ds);
|
|
break;
|
|
|
|
case OTX_CPT_AES_GCM:
|
|
fctx->enc.enc_ctrl.e.iv_source = OTX_CPT_FROM_DPTR;
|
|
/* Copy encryption key to context */
|
|
memcpy(fctx->enc.encr_key, ctx->key, ctx->enc_key_len);
|
|
/* Copy salt to context */
|
|
memcpy(fctx->enc.encr_iv, ctx->key + ctx->enc_key_len,
|
|
AES_GCM_SALT_SIZE);
|
|
|
|
rctx->ctrl_word.e.iv_offset = req->assoclen - AES_GCM_IV_OFFSET;
|
|
break;
|
|
|
|
default:
|
|
/* Unknown cipher type */
|
|
return -EINVAL;
|
|
}
|
|
rctx->ctrl_word.flags = cpu_to_be64(rctx->ctrl_word.cflags);
|
|
|
|
req_info->ctrl.s.dma_mode = OTX_CPT_DMA_GATHER_SCATTER;
|
|
req_info->ctrl.s.se_req = OTX_CPT_SE_CORE_REQ;
|
|
req_info->req.opcode.s.major = OTX_CPT_MAJOR_OP_FC |
|
|
DMA_MODE_FLAG(OTX_CPT_DMA_GATHER_SCATTER);
|
|
if (enc) {
|
|
req_info->req.opcode.s.minor = 2;
|
|
req_info->req.param1 = req->cryptlen;
|
|
req_info->req.param2 = req->cryptlen + req->assoclen;
|
|
} else {
|
|
req_info->req.opcode.s.minor = 3;
|
|
req_info->req.param1 = req->cryptlen - mac_len;
|
|
req_info->req.param2 = req->cryptlen + req->assoclen - mac_len;
|
|
}
|
|
|
|
fctx->enc.enc_ctrl.e.enc_cipher = ctx->cipher_type;
|
|
fctx->enc.enc_ctrl.e.aes_key = ctx->key_type;
|
|
fctx->enc.enc_ctrl.e.mac_type = ctx->mac_type;
|
|
fctx->enc.enc_ctrl.e.mac_len = mac_len;
|
|
fctx->enc.enc_ctrl.flags = cpu_to_be64(fctx->enc.enc_ctrl.cflags);
|
|
|
|
/*
|
|
* Storing Packet Data Information in offset
|
|
* Control Word First 8 bytes
|
|
*/
|
|
req_info->in[*argcnt].vptr = (u8 *)&rctx->ctrl_word;
|
|
req_info->in[*argcnt].size = CONTROL_WORD_LEN;
|
|
req_info->req.dlen += CONTROL_WORD_LEN;
|
|
++(*argcnt);
|
|
|
|
req_info->in[*argcnt].vptr = (u8 *)fctx;
|
|
req_info->in[*argcnt].size = sizeof(struct otx_cpt_fc_ctx);
|
|
req_info->req.dlen += sizeof(struct otx_cpt_fc_ctx);
|
|
++(*argcnt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline u32 create_hmac_ctx_hdr(struct aead_request *req, u32 *argcnt,
|
|
u32 enc)
|
|
{
|
|
struct otx_cpt_req_ctx *rctx = aead_request_ctx_dma(req);
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
struct otx_cpt_aead_ctx *ctx = crypto_aead_ctx_dma(tfm);
|
|
struct otx_cpt_req_info *req_info = &rctx->cpt_req;
|
|
|
|
req_info->ctrl.s.dma_mode = OTX_CPT_DMA_GATHER_SCATTER;
|
|
req_info->ctrl.s.se_req = OTX_CPT_SE_CORE_REQ;
|
|
req_info->req.opcode.s.major = OTX_CPT_MAJOR_OP_HMAC |
|
|
DMA_MODE_FLAG(OTX_CPT_DMA_GATHER_SCATTER);
|
|
req_info->is_trunc_hmac = ctx->is_trunc_hmac;
|
|
|
|
req_info->req.opcode.s.minor = 0;
|
|
req_info->req.param1 = ctx->auth_key_len;
|
|
req_info->req.param2 = ctx->mac_type << 8;
|
|
|
|
/* Add authentication key */
|
|
req_info->in[*argcnt].vptr = ctx->key;
|
|
req_info->in[*argcnt].size = round_up(ctx->auth_key_len, 8);
|
|
req_info->req.dlen += round_up(ctx->auth_key_len, 8);
|
|
++(*argcnt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline u32 create_aead_input_list(struct aead_request *req, u32 enc)
|
|
{
|
|
struct otx_cpt_req_ctx *rctx = aead_request_ctx_dma(req);
|
|
struct otx_cpt_req_info *req_info = &rctx->cpt_req;
|
|
u32 inputlen = req->cryptlen + req->assoclen;
|
|
u32 status, argcnt = 0;
|
|
|
|
status = create_aead_ctx_hdr(req, enc, &argcnt);
|
|
if (status)
|
|
return status;
|
|
update_input_data(req_info, req->src, inputlen, &argcnt);
|
|
req_info->incnt = argcnt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline u32 create_aead_output_list(struct aead_request *req, u32 enc,
|
|
u32 mac_len)
|
|
{
|
|
struct otx_cpt_req_ctx *rctx = aead_request_ctx_dma(req);
|
|
struct otx_cpt_req_info *req_info = &rctx->cpt_req;
|
|
u32 argcnt = 0, outputlen = 0;
|
|
|
|
if (enc)
|
|
outputlen = req->cryptlen + req->assoclen + mac_len;
|
|
else
|
|
outputlen = req->cryptlen + req->assoclen - mac_len;
|
|
|
|
update_output_data(req_info, req->dst, 0, outputlen, &argcnt);
|
|
req_info->outcnt = argcnt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline u32 create_aead_null_input_list(struct aead_request *req,
|
|
u32 enc, u32 mac_len)
|
|
{
|
|
struct otx_cpt_req_ctx *rctx = aead_request_ctx_dma(req);
|
|
struct otx_cpt_req_info *req_info = &rctx->cpt_req;
|
|
u32 inputlen, argcnt = 0;
|
|
|
|
if (enc)
|
|
inputlen = req->cryptlen + req->assoclen;
|
|
else
|
|
inputlen = req->cryptlen + req->assoclen - mac_len;
|
|
|
|
create_hmac_ctx_hdr(req, &argcnt, enc);
|
|
update_input_data(req_info, req->src, inputlen, &argcnt);
|
|
req_info->incnt = argcnt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline u32 create_aead_null_output_list(struct aead_request *req,
|
|
u32 enc, u32 mac_len)
|
|
{
|
|
struct otx_cpt_req_ctx *rctx = aead_request_ctx_dma(req);
|
|
struct otx_cpt_req_info *req_info = &rctx->cpt_req;
|
|
struct scatterlist *dst;
|
|
u8 *ptr = NULL;
|
|
int argcnt = 0, status, offset;
|
|
u32 inputlen;
|
|
|
|
if (enc)
|
|
inputlen = req->cryptlen + req->assoclen;
|
|
else
|
|
inputlen = req->cryptlen + req->assoclen - mac_len;
|
|
|
|
/*
|
|
* If source and destination are different
|
|
* then copy payload to destination
|
|
*/
|
|
if (req->src != req->dst) {
|
|
|
|
ptr = kmalloc(inputlen, (req_info->areq->flags &
|
|
CRYPTO_TFM_REQ_MAY_SLEEP) ?
|
|
GFP_KERNEL : GFP_ATOMIC);
|
|
if (!ptr) {
|
|
status = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
status = sg_copy_to_buffer(req->src, sg_nents(req->src), ptr,
|
|
inputlen);
|
|
if (status != inputlen) {
|
|
status = -EINVAL;
|
|
goto error_free;
|
|
}
|
|
status = sg_copy_from_buffer(req->dst, sg_nents(req->dst), ptr,
|
|
inputlen);
|
|
if (status != inputlen) {
|
|
status = -EINVAL;
|
|
goto error_free;
|
|
}
|
|
kfree(ptr);
|
|
}
|
|
|
|
if (enc) {
|
|
/*
|
|
* In an encryption scenario hmac needs
|
|
* to be appended after payload
|
|
*/
|
|
dst = req->dst;
|
|
offset = inputlen;
|
|
while (offset >= dst->length) {
|
|
offset -= dst->length;
|
|
dst = sg_next(dst);
|
|
if (!dst) {
|
|
status = -ENOENT;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
update_output_data(req_info, dst, offset, mac_len, &argcnt);
|
|
} else {
|
|
/*
|
|
* In a decryption scenario calculated hmac for received
|
|
* payload needs to be compare with hmac received
|
|
*/
|
|
status = sg_copy_buffer(req->src, sg_nents(req->src),
|
|
rctx->fctx.hmac.s.hmac_recv, mac_len,
|
|
inputlen, true);
|
|
if (status != mac_len) {
|
|
status = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
req_info->out[argcnt].vptr = rctx->fctx.hmac.s.hmac_calc;
|
|
req_info->out[argcnt].size = mac_len;
|
|
argcnt++;
|
|
}
|
|
|
|
req_info->outcnt = argcnt;
|
|
return 0;
|
|
|
|
error_free:
|
|
kfree(ptr);
|
|
error:
|
|
return status;
|
|
}
|
|
|
|
static u32 cpt_aead_enc_dec(struct aead_request *req, u8 reg_type, u8 enc)
|
|
{
|
|
struct otx_cpt_req_ctx *rctx = aead_request_ctx_dma(req);
|
|
struct otx_cpt_req_info *req_info = &rctx->cpt_req;
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
struct pci_dev *pdev;
|
|
u32 status, cpu_num;
|
|
|
|
/* Clear control words */
|
|
rctx->ctrl_word.flags = 0;
|
|
rctx->fctx.enc.enc_ctrl.flags = 0;
|
|
|
|
req_info->callback = otx_cpt_aead_callback;
|
|
req_info->areq = &req->base;
|
|
req_info->req_type = reg_type;
|
|
req_info->is_enc = enc;
|
|
req_info->is_trunc_hmac = false;
|
|
|
|
switch (reg_type) {
|
|
case OTX_CPT_AEAD_ENC_DEC_REQ:
|
|
status = create_aead_input_list(req, enc);
|
|
if (status)
|
|
return status;
|
|
status = create_aead_output_list(req, enc,
|
|
crypto_aead_authsize(tfm));
|
|
if (status)
|
|
return status;
|
|
break;
|
|
|
|
case OTX_CPT_AEAD_ENC_DEC_NULL_REQ:
|
|
status = create_aead_null_input_list(req, enc,
|
|
crypto_aead_authsize(tfm));
|
|
if (status)
|
|
return status;
|
|
status = create_aead_null_output_list(req, enc,
|
|
crypto_aead_authsize(tfm));
|
|
if (status)
|
|
return status;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Validate that request doesn't exceed maximum CPT supported size */
|
|
if (req_info->req.param1 > OTX_CPT_MAX_REQ_SIZE ||
|
|
req_info->req.param2 > OTX_CPT_MAX_REQ_SIZE)
|
|
return -E2BIG;
|
|
|
|
status = get_se_device(&pdev, &cpu_num);
|
|
if (status)
|
|
return status;
|
|
|
|
req_info->ctrl.s.grp = 0;
|
|
|
|
status = otx_cpt_do_request(pdev, req_info, cpu_num);
|
|
/*
|
|
* We perform an asynchronous send and once
|
|
* the request is completed the driver would
|
|
* intimate through registered call back functions
|
|
*/
|
|
return status;
|
|
}
|
|
|
|
static int otx_cpt_aead_encrypt(struct aead_request *req)
|
|
{
|
|
return cpt_aead_enc_dec(req, OTX_CPT_AEAD_ENC_DEC_REQ, true);
|
|
}
|
|
|
|
static int otx_cpt_aead_decrypt(struct aead_request *req)
|
|
{
|
|
return cpt_aead_enc_dec(req, OTX_CPT_AEAD_ENC_DEC_REQ, false);
|
|
}
|
|
|
|
static int otx_cpt_aead_null_encrypt(struct aead_request *req)
|
|
{
|
|
return cpt_aead_enc_dec(req, OTX_CPT_AEAD_ENC_DEC_NULL_REQ, true);
|
|
}
|
|
|
|
static int otx_cpt_aead_null_decrypt(struct aead_request *req)
|
|
{
|
|
return cpt_aead_enc_dec(req, OTX_CPT_AEAD_ENC_DEC_NULL_REQ, false);
|
|
}
|
|
|
|
static struct skcipher_alg otx_cpt_skciphers[] = { {
|
|
.base.cra_name = "xts(aes)",
|
|
.base.cra_driver_name = "cpt_xts_aes",
|
|
.base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.base.cra_blocksize = AES_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct otx_cpt_enc_ctx),
|
|
.base.cra_alignmask = 7,
|
|
.base.cra_priority = 4001,
|
|
.base.cra_module = THIS_MODULE,
|
|
|
|
.init = otx_cpt_enc_dec_init,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.min_keysize = 2 * AES_MIN_KEY_SIZE,
|
|
.max_keysize = 2 * AES_MAX_KEY_SIZE,
|
|
.setkey = otx_cpt_skcipher_xts_setkey,
|
|
.encrypt = otx_cpt_skcipher_encrypt,
|
|
.decrypt = otx_cpt_skcipher_decrypt,
|
|
}, {
|
|
.base.cra_name = "cbc(aes)",
|
|
.base.cra_driver_name = "cpt_cbc_aes",
|
|
.base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.base.cra_blocksize = AES_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct otx_cpt_enc_ctx),
|
|
.base.cra_alignmask = 7,
|
|
.base.cra_priority = 4001,
|
|
.base.cra_module = THIS_MODULE,
|
|
|
|
.init = otx_cpt_enc_dec_init,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.setkey = otx_cpt_skcipher_cbc_aes_setkey,
|
|
.encrypt = otx_cpt_skcipher_encrypt,
|
|
.decrypt = otx_cpt_skcipher_decrypt,
|
|
}, {
|
|
.base.cra_name = "ecb(aes)",
|
|
.base.cra_driver_name = "cpt_ecb_aes",
|
|
.base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.base.cra_blocksize = AES_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct otx_cpt_enc_ctx),
|
|
.base.cra_alignmask = 7,
|
|
.base.cra_priority = 4001,
|
|
.base.cra_module = THIS_MODULE,
|
|
|
|
.init = otx_cpt_enc_dec_init,
|
|
.ivsize = 0,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.setkey = otx_cpt_skcipher_ecb_aes_setkey,
|
|
.encrypt = otx_cpt_skcipher_encrypt,
|
|
.decrypt = otx_cpt_skcipher_decrypt,
|
|
}, {
|
|
.base.cra_name = "cfb(aes)",
|
|
.base.cra_driver_name = "cpt_cfb_aes",
|
|
.base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.base.cra_blocksize = AES_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct otx_cpt_enc_ctx),
|
|
.base.cra_alignmask = 7,
|
|
.base.cra_priority = 4001,
|
|
.base.cra_module = THIS_MODULE,
|
|
|
|
.init = otx_cpt_enc_dec_init,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.setkey = otx_cpt_skcipher_cfb_aes_setkey,
|
|
.encrypt = otx_cpt_skcipher_encrypt,
|
|
.decrypt = otx_cpt_skcipher_decrypt,
|
|
}, {
|
|
.base.cra_name = "cbc(des3_ede)",
|
|
.base.cra_driver_name = "cpt_cbc_des3_ede",
|
|
.base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct otx_cpt_des3_ctx),
|
|
.base.cra_alignmask = 7,
|
|
.base.cra_priority = 4001,
|
|
.base.cra_module = THIS_MODULE,
|
|
|
|
.init = otx_cpt_enc_dec_init,
|
|
.min_keysize = DES3_EDE_KEY_SIZE,
|
|
.max_keysize = DES3_EDE_KEY_SIZE,
|
|
.ivsize = DES_BLOCK_SIZE,
|
|
.setkey = otx_cpt_skcipher_cbc_des3_setkey,
|
|
.encrypt = otx_cpt_skcipher_encrypt,
|
|
.decrypt = otx_cpt_skcipher_decrypt,
|
|
}, {
|
|
.base.cra_name = "ecb(des3_ede)",
|
|
.base.cra_driver_name = "cpt_ecb_des3_ede",
|
|
.base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
|
|
.base.cra_ctxsize = sizeof(struct otx_cpt_des3_ctx),
|
|
.base.cra_alignmask = 7,
|
|
.base.cra_priority = 4001,
|
|
.base.cra_module = THIS_MODULE,
|
|
|
|
.init = otx_cpt_enc_dec_init,
|
|
.min_keysize = DES3_EDE_KEY_SIZE,
|
|
.max_keysize = DES3_EDE_KEY_SIZE,
|
|
.ivsize = 0,
|
|
.setkey = otx_cpt_skcipher_ecb_des3_setkey,
|
|
.encrypt = otx_cpt_skcipher_encrypt,
|
|
.decrypt = otx_cpt_skcipher_decrypt,
|
|
} };
|
|
|
|
static struct aead_alg otx_cpt_aeads[] = { {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha1),cbc(aes))",
|
|
.cra_driver_name = "cpt_hmac_sha1_cbc_aes",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_cbc_aes_sha1_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_cbc_aes_sha_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_encrypt,
|
|
.decrypt = otx_cpt_aead_decrypt,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.maxauthsize = SHA1_DIGEST_SIZE,
|
|
}, {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha256),cbc(aes))",
|
|
.cra_driver_name = "cpt_hmac_sha256_cbc_aes",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_cbc_aes_sha256_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_cbc_aes_sha_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_encrypt,
|
|
.decrypt = otx_cpt_aead_decrypt,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.maxauthsize = SHA256_DIGEST_SIZE,
|
|
}, {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha384),cbc(aes))",
|
|
.cra_driver_name = "cpt_hmac_sha384_cbc_aes",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_cbc_aes_sha384_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_cbc_aes_sha_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_encrypt,
|
|
.decrypt = otx_cpt_aead_decrypt,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.maxauthsize = SHA384_DIGEST_SIZE,
|
|
}, {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha512),cbc(aes))",
|
|
.cra_driver_name = "cpt_hmac_sha512_cbc_aes",
|
|
.cra_blocksize = AES_BLOCK_SIZE,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_cbc_aes_sha512_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_cbc_aes_sha_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_encrypt,
|
|
.decrypt = otx_cpt_aead_decrypt,
|
|
.ivsize = AES_BLOCK_SIZE,
|
|
.maxauthsize = SHA512_DIGEST_SIZE,
|
|
}, {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha1),ecb(cipher_null))",
|
|
.cra_driver_name = "cpt_hmac_sha1_ecb_null",
|
|
.cra_blocksize = 1,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_ecb_null_sha1_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_ecb_null_sha_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_null_encrypt,
|
|
.decrypt = otx_cpt_aead_null_decrypt,
|
|
.ivsize = 0,
|
|
.maxauthsize = SHA1_DIGEST_SIZE,
|
|
}, {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha256),ecb(cipher_null))",
|
|
.cra_driver_name = "cpt_hmac_sha256_ecb_null",
|
|
.cra_blocksize = 1,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_ecb_null_sha256_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_ecb_null_sha_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_null_encrypt,
|
|
.decrypt = otx_cpt_aead_null_decrypt,
|
|
.ivsize = 0,
|
|
.maxauthsize = SHA256_DIGEST_SIZE,
|
|
}, {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha384),ecb(cipher_null))",
|
|
.cra_driver_name = "cpt_hmac_sha384_ecb_null",
|
|
.cra_blocksize = 1,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_ecb_null_sha384_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_ecb_null_sha_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_null_encrypt,
|
|
.decrypt = otx_cpt_aead_null_decrypt,
|
|
.ivsize = 0,
|
|
.maxauthsize = SHA384_DIGEST_SIZE,
|
|
}, {
|
|
.base = {
|
|
.cra_name = "authenc(hmac(sha512),ecb(cipher_null))",
|
|
.cra_driver_name = "cpt_hmac_sha512_ecb_null",
|
|
.cra_blocksize = 1,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_ecb_null_sha512_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_ecb_null_sha_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_null_encrypt,
|
|
.decrypt = otx_cpt_aead_null_decrypt,
|
|
.ivsize = 0,
|
|
.maxauthsize = SHA512_DIGEST_SIZE,
|
|
}, {
|
|
.base = {
|
|
.cra_name = "rfc4106(gcm(aes))",
|
|
.cra_driver_name = "cpt_rfc4106_gcm_aes",
|
|
.cra_blocksize = 1,
|
|
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,
|
|
.cra_ctxsize = sizeof(struct otx_cpt_aead_ctx) + CRYPTO_DMA_PADDING,
|
|
.cra_priority = 4001,
|
|
.cra_alignmask = 0,
|
|
.cra_module = THIS_MODULE,
|
|
},
|
|
.init = otx_cpt_aead_gcm_aes_init,
|
|
.exit = otx_cpt_aead_exit,
|
|
.setkey = otx_cpt_aead_gcm_aes_setkey,
|
|
.setauthsize = otx_cpt_aead_set_authsize,
|
|
.encrypt = otx_cpt_aead_encrypt,
|
|
.decrypt = otx_cpt_aead_decrypt,
|
|
.ivsize = AES_GCM_IV_SIZE,
|
|
.maxauthsize = AES_GCM_ICV_SIZE,
|
|
} };
|
|
|
|
static inline int is_any_alg_used(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(otx_cpt_skciphers); i++)
|
|
if (refcount_read(&otx_cpt_skciphers[i].base.cra_refcnt) != 1)
|
|
return true;
|
|
for (i = 0; i < ARRAY_SIZE(otx_cpt_aeads); i++)
|
|
if (refcount_read(&otx_cpt_aeads[i].base.cra_refcnt) != 1)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static inline int cpt_register_algs(void)
|
|
{
|
|
int i, err = 0;
|
|
|
|
if (!IS_ENABLED(CONFIG_DM_CRYPT)) {
|
|
for (i = 0; i < ARRAY_SIZE(otx_cpt_skciphers); i++)
|
|
otx_cpt_skciphers[i].base.cra_flags &= ~CRYPTO_ALG_DEAD;
|
|
|
|
err = crypto_register_skciphers(otx_cpt_skciphers,
|
|
ARRAY_SIZE(otx_cpt_skciphers));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(otx_cpt_aeads); i++)
|
|
otx_cpt_aeads[i].base.cra_flags &= ~CRYPTO_ALG_DEAD;
|
|
|
|
err = crypto_register_aeads(otx_cpt_aeads, ARRAY_SIZE(otx_cpt_aeads));
|
|
if (err) {
|
|
crypto_unregister_skciphers(otx_cpt_skciphers,
|
|
ARRAY_SIZE(otx_cpt_skciphers));
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void cpt_unregister_algs(void)
|
|
{
|
|
crypto_unregister_skciphers(otx_cpt_skciphers,
|
|
ARRAY_SIZE(otx_cpt_skciphers));
|
|
crypto_unregister_aeads(otx_cpt_aeads, ARRAY_SIZE(otx_cpt_aeads));
|
|
}
|
|
|
|
static int compare_func(const void *lptr, const void *rptr)
|
|
{
|
|
struct cpt_device_desc *ldesc = (struct cpt_device_desc *) lptr;
|
|
struct cpt_device_desc *rdesc = (struct cpt_device_desc *) rptr;
|
|
|
|
if (ldesc->dev->devfn < rdesc->dev->devfn)
|
|
return -1;
|
|
if (ldesc->dev->devfn > rdesc->dev->devfn)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static void swap_func(void *lptr, void *rptr, int size)
|
|
{
|
|
struct cpt_device_desc *ldesc = (struct cpt_device_desc *) lptr;
|
|
struct cpt_device_desc *rdesc = (struct cpt_device_desc *) rptr;
|
|
|
|
swap(*ldesc, *rdesc);
|
|
}
|
|
|
|
int otx_cpt_crypto_init(struct pci_dev *pdev, struct module *mod,
|
|
enum otx_cptpf_type pf_type,
|
|
enum otx_cptvf_type engine_type,
|
|
int num_queues, int num_devices)
|
|
{
|
|
int ret = 0;
|
|
int count;
|
|
|
|
mutex_lock(&mutex);
|
|
switch (engine_type) {
|
|
case OTX_CPT_SE_TYPES:
|
|
count = atomic_read(&se_devices.count);
|
|
if (count >= CPT_MAX_VF_NUM) {
|
|
dev_err(&pdev->dev, "No space to add a new device\n");
|
|
ret = -ENOSPC;
|
|
goto err;
|
|
}
|
|
se_devices.desc[count].pf_type = pf_type;
|
|
se_devices.desc[count].num_queues = num_queues;
|
|
se_devices.desc[count++].dev = pdev;
|
|
atomic_inc(&se_devices.count);
|
|
|
|
if (atomic_read(&se_devices.count) == num_devices &&
|
|
is_crypto_registered == false) {
|
|
if (cpt_register_algs()) {
|
|
dev_err(&pdev->dev,
|
|
"Error in registering crypto algorithms\n");
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
try_module_get(mod);
|
|
is_crypto_registered = true;
|
|
}
|
|
sort(se_devices.desc, count, sizeof(struct cpt_device_desc),
|
|
compare_func, swap_func);
|
|
break;
|
|
|
|
case OTX_CPT_AE_TYPES:
|
|
count = atomic_read(&ae_devices.count);
|
|
if (count >= CPT_MAX_VF_NUM) {
|
|
dev_err(&pdev->dev, "No space to a add new device\n");
|
|
ret = -ENOSPC;
|
|
goto err;
|
|
}
|
|
ae_devices.desc[count].pf_type = pf_type;
|
|
ae_devices.desc[count].num_queues = num_queues;
|
|
ae_devices.desc[count++].dev = pdev;
|
|
atomic_inc(&ae_devices.count);
|
|
sort(ae_devices.desc, count, sizeof(struct cpt_device_desc),
|
|
compare_func, swap_func);
|
|
break;
|
|
|
|
default:
|
|
dev_err(&pdev->dev, "Unknown VF type %d\n", engine_type);
|
|
ret = BAD_OTX_CPTVF_TYPE;
|
|
}
|
|
err:
|
|
mutex_unlock(&mutex);
|
|
return ret;
|
|
}
|
|
|
|
void otx_cpt_crypto_exit(struct pci_dev *pdev, struct module *mod,
|
|
enum otx_cptvf_type engine_type)
|
|
{
|
|
struct cpt_device_table *dev_tbl;
|
|
bool dev_found = false;
|
|
int i, j, count;
|
|
|
|
mutex_lock(&mutex);
|
|
|
|
dev_tbl = (engine_type == OTX_CPT_AE_TYPES) ? &ae_devices : &se_devices;
|
|
count = atomic_read(&dev_tbl->count);
|
|
for (i = 0; i < count; i++)
|
|
if (pdev == dev_tbl->desc[i].dev) {
|
|
for (j = i; j < count-1; j++)
|
|
dev_tbl->desc[j] = dev_tbl->desc[j+1];
|
|
dev_found = true;
|
|
break;
|
|
}
|
|
|
|
if (!dev_found) {
|
|
dev_err(&pdev->dev, "%s device not found\n", __func__);
|
|
goto exit;
|
|
}
|
|
|
|
if (engine_type != OTX_CPT_AE_TYPES) {
|
|
if (atomic_dec_and_test(&se_devices.count) &&
|
|
!is_any_alg_used()) {
|
|
cpt_unregister_algs();
|
|
module_put(mod);
|
|
is_crypto_registered = false;
|
|
}
|
|
} else
|
|
atomic_dec(&ae_devices.count);
|
|
exit:
|
|
mutex_unlock(&mutex);
|
|
}
|