From patchwork Fri Jan 10 07:49:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xu Zaibo X-Patchwork-Id: 11326841 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 685D0138D for ; Fri, 10 Jan 2020 07:53:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 339E02077C for ; Fri, 10 Jan 2020 07:53:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726561AbgAJHx6 (ORCPT ); Fri, 10 Jan 2020 02:53:58 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:42538 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726401AbgAJHx5 (ORCPT ); Fri, 10 Jan 2020 02:53:57 -0500 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 12D843CD0D3895616E35; Fri, 10 Jan 2020 15:53:52 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.439.0; Fri, 10 Jan 2020 15:53:45 +0800 From: Zaibo Xu To: , CC: , , , , , , , , , , Subject: [PATCH 9/9] crypto: hisilicon - Add aead support on SEC2 Date: Fri, 10 Jan 2020 15:49:58 +0800 Message-ID: <1578642598-8584-10-git-send-email-xuzaibo@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1578642598-8584-1-git-send-email-xuzaibo@huawei.com> References: <1578642598-8584-1-git-send-email-xuzaibo@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org authenc(hmac(sha1),cbc(aes)), authenc(hmac(sha256),cbc(aes)), and authenc(hmac(sha512),cbc(aes)) support are added for SEC v2. Signed-off-by: Zaibo Xu --- drivers/crypto/hisilicon/Kconfig | 8 +- drivers/crypto/hisilicon/sec2/sec.h | 29 +- drivers/crypto/hisilicon/sec2/sec_crypto.c | 589 +++++++++++++++++++++++++++-- drivers/crypto/hisilicon/sec2/sec_crypto.h | 18 + 4 files changed, 620 insertions(+), 24 deletions(-) diff --git a/drivers/crypto/hisilicon/Kconfig b/drivers/crypto/hisilicon/Kconfig index 6e7c757..8851161 100644 --- a/drivers/crypto/hisilicon/Kconfig +++ b/drivers/crypto/hisilicon/Kconfig @@ -20,12 +20,18 @@ config CRYPTO_DEV_HISI_SEC2 select CRYPTO_ALGAPI select CRYPTO_LIB_DES select CRYPTO_DEV_HISI_QM + select CRYPTO_AEAD + select CRYPTO_AUTHENC + select CRYPTO_HMAC + select CRYPTO_SHA1 + select CRYPTO_SHA256 + select CRYPTO_SHA512 depends on PCI && PCI_MSI depends on ARM64 || (COMPILE_TEST && 64BIT) help Support for HiSilicon SEC Engine of version 2 in crypto subsystem. It provides AES, SM4, and 3DES algorithms with ECB - CBC, and XTS cipher mode. + CBC, and XTS cipher mode, and AEAD algorithms. To compile this as a module, choose M here: the module will be called hisi_sec2. diff --git a/drivers/crypto/hisilicon/sec2/sec.h b/drivers/crypto/hisilicon/sec2/sec.h index 97d5150..13e2d8d 100644 --- a/drivers/crypto/hisilicon/sec2/sec.h +++ b/drivers/crypto/hisilicon/sec2/sec.h @@ -13,6 +13,8 @@ struct sec_alg_res { u8 *c_ivin; dma_addr_t c_ivin_dma; + u8 *out_mac; + dma_addr_t out_mac_dma; }; /* Cipher request of SEC private */ @@ -26,14 +28,21 @@ struct sec_cipher_req { bool encrypt; }; +struct sec_aead_req { + u8 *out_mac; + dma_addr_t out_mac_dma; + struct aead_request *aead_req; +}; + /* SEC request of Crypto */ struct sec_req { struct sec_sqe sec_sqe; struct sec_ctx *ctx; struct sec_qp_ctx *qp_ctx; - /* Cipher supported only at present */ struct sec_cipher_req c_req; + struct sec_aead_req aead_req; + int err_type; int req_id; @@ -60,6 +69,16 @@ struct sec_req_op { int (*process)(struct sec_ctx *ctx, struct sec_req *req); }; +/* SEC auth context */ +struct sec_auth_ctx { + dma_addr_t a_key_dma; + u8 *a_key; + u8 a_key_len; + u8 mac_len; + u8 a_alg; + struct crypto_shash *hash_tfm; +}; + /* SEC cipher context which cipher's relatives */ struct sec_cipher_ctx { u8 *c_key; @@ -85,6 +104,11 @@ struct sec_qp_ctx { atomic_t pending_reqs; }; +enum sec_alg_type { + SEC_SKCIPHER, + SEC_AEAD +}; + /* SEC Crypto TFM context which defines queue and cipher .etc relatives */ struct sec_ctx { struct sec_qp_ctx *qp_ctx; @@ -102,7 +126,10 @@ struct sec_ctx { /* Currrent cyclic index to select a queue for decipher */ atomic_t dec_qcyclic; + + enum sec_alg_type alg_type; struct sec_cipher_ctx c_ctx; + struct sec_auth_ctx a_ctx; }; enum sec_endian { diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c index f919dea..a0a3568 100644 --- a/drivers/crypto/hisilicon/sec2/sec_crypto.c +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c @@ -3,7 +3,11 @@ #include #include +#include #include +#include +#include +#include #include #include #include @@ -27,6 +31,10 @@ #define SEC_SRC_SGL_OFFSET 7 #define SEC_CKEY_OFFSET 9 #define SEC_CMODE_OFFSET 12 +#define SEC_AKEY_OFFSET 5 +#define SEC_AEAD_ALG_OFFSET 11 +#define SEC_AUTH_OFFSET 6 + #define SEC_FLAG_OFFSET 7 #define SEC_FLAG_MASK 0x0780 #define SEC_TYPE_MASK 0x0F @@ -35,11 +43,16 @@ #define SEC_TOTAL_IV_SZ (SEC_IV_SIZE * QM_Q_DEPTH) #define SEC_SGL_SGE_NR 128 #define SEC_CTX_DEV(ctx) (&(ctx)->sec->qm.pdev->dev) +#define SEC_CIPHER_AUTH 0xfe +#define SEC_AUTH_CIPHER 0x1 +#define SEC_MAX_MAC_LEN 64 +#define SEC_TOTAL_MAC_SZ (SEC_MAX_MAC_LEN * QM_Q_DEPTH) +#define SEC_SQE_LEN_RATE 4 #define SEC_SQE_CFLAG 2 +#define SEC_SQE_AEAD_FLAG 3 #define SEC_SQE_DONE 0x1 -static DEFINE_MUTEX(sec_algs_lock); -static unsigned int sec_active_devs; +static atomic_t sec_active_devs; /* Get an en/de-cipher queue cyclically to balance load over queues of TFM */ static inline int sec_alloc_queue_id(struct sec_ctx *ctx, struct sec_req *req) @@ -97,6 +110,27 @@ static void sec_free_req_id(struct sec_req *req) mutex_unlock(&qp_ctx->req_lock); } +static int sec_aead_verify(struct sec_req *req, struct sec_qp_ctx *qp_ctx) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(aead_req); + u8 *mac_out = qp_ctx->res[req->req_id].out_mac; + size_t authsize = crypto_aead_authsize(tfm); + u8 *mac = mac_out + SEC_MAX_MAC_LEN; + struct scatterlist *sgl = aead_req->src; + size_t sz; + + sz = sg_pcopy_to_buffer(sgl, sg_nents(sgl), mac, authsize, + aead_req->cryptlen + aead_req->assoclen - + authsize); + if (unlikely(sz != authsize || memcmp(mac_out, mac, sz))) { + dev_err(SEC_CTX_DEV(req->ctx), "aead verify failure!\n"); + return -EBADMSG; + } + + return 0; +} + static void sec_req_cb(struct hisi_qp *qp, void *resp) { struct sec_qp_ctx *qp_ctx = qp->qp_ctx; @@ -119,14 +153,18 @@ static void sec_req_cb(struct hisi_qp *qp, void *resp) done = le16_to_cpu(bd->type2.done_flag) & SEC_DONE_MASK; flag = (le16_to_cpu(bd->type2.done_flag) & SEC_FLAG_MASK) >> SEC_FLAG_OFFSET; - if (req->err_type || done != SEC_SQE_DONE || - flag != SEC_SQE_CFLAG) { + if (unlikely(req->err_type || done != SEC_SQE_DONE || + (ctx->alg_type == SEC_SKCIPHER && flag != SEC_SQE_CFLAG) || + (ctx->alg_type == SEC_AEAD && flag != SEC_SQE_AEAD_FLAG))) { dev_err(SEC_CTX_DEV(ctx), "err_type[%d],done[%d],flag[%d]\n", req->err_type, done, flag); err = -EIO; } + if (ctx->alg_type == SEC_AEAD && !req->c_req.encrypt) + err = sec_aead_verify(req, qp_ctx); + atomic64_inc(&ctx->sec->debug.dfx.recv_cnt); ctx->req_op->buf_unmap(ctx, req); @@ -182,12 +220,53 @@ static void sec_free_civ_resource(struct device *dev, struct sec_alg_res *res) res->c_ivin, res->c_ivin_dma); } +static int sec_alloc_mac_resource(struct device *dev, struct sec_alg_res *res) +{ + int i; + + res->out_mac = dma_alloc_coherent(dev, SEC_TOTAL_MAC_SZ << 1, + &res->out_mac_dma, GFP_KERNEL); + if (!res->out_mac) + return -ENOMEM; + + for (i = 1; i < QM_Q_DEPTH; i++) { + res[i].out_mac_dma = res->out_mac_dma + + i * (SEC_MAX_MAC_LEN << 1); + res[i].out_mac = res->out_mac + i * (SEC_MAX_MAC_LEN << 1); + } + + return 0; +} + +static void sec_free_mac_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->out_mac) + dma_free_coherent(dev, SEC_TOTAL_MAC_SZ << 1, + res->out_mac, res->out_mac_dma); +} + static int sec_alg_resource_alloc(struct sec_ctx *ctx, struct sec_qp_ctx *qp_ctx) { struct device *dev = SEC_CTX_DEV(ctx); + struct sec_alg_res *res = qp_ctx->res; + int ret; + + ret = sec_alloc_civ_resource(dev, res); + if (ret) + return ret; - return sec_alloc_civ_resource(dev, qp_ctx->res); + if (ctx->alg_type == SEC_AEAD) { + ret = sec_alloc_mac_resource(dev, res); + if (ret) + goto get_fail; + } + + return 0; +get_fail: + sec_free_civ_resource(dev, res); + + return ret; } static void sec_alg_resource_free(struct sec_ctx *ctx, @@ -196,6 +275,9 @@ static void sec_alg_resource_free(struct sec_ctx *ctx, struct device *dev = SEC_CTX_DEV(ctx); sec_free_civ_resource(dev, qp_ctx->res); + + if (ctx->alg_type == SEC_AEAD) + sec_free_mac_resource(dev, qp_ctx->res); } static int sec_create_qp_ctx(struct hisi_qm *qm, struct sec_ctx *ctx, @@ -339,12 +421,34 @@ static void sec_cipher_uninit(struct sec_ctx *ctx) c_ctx->c_key, c_ctx->c_key_dma); } +static int sec_auth_init(struct sec_ctx *ctx) +{ + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + + a_ctx->a_key = dma_alloc_coherent(SEC_CTX_DEV(ctx), SEC_MAX_KEY_SIZE, + &a_ctx->a_key_dma, GFP_KERNEL); + if (!a_ctx->a_key) + return -ENOMEM; + + return 0; +} + +static void sec_auth_uninit(struct sec_ctx *ctx) +{ + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + + memzero_explicit(a_ctx->a_key, SEC_MAX_KEY_SIZE); + dma_free_coherent(SEC_CTX_DEV(ctx), SEC_MAX_KEY_SIZE, + a_ctx->a_key, a_ctx->a_key_dma); +} + static int sec_skcipher_init(struct crypto_skcipher *tfm) { struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); int ret; ctx = crypto_skcipher_ctx(tfm); + ctx->alg_type = SEC_SKCIPHER; crypto_skcipher_set_reqsize(tfm, sizeof(struct sec_req)); ctx->c_ctx.ivsize = crypto_skcipher_ivsize(tfm); if (ctx->c_ctx.ivsize > SEC_IV_SIZE) { @@ -547,6 +651,126 @@ static void sec_skcipher_sgl_unmap(struct sec_ctx *ctx, struct sec_req *req) sec_cipher_unmap(dev, c_req, sk_req->src, sk_req->dst); } +static int sec_aead_aes_set_key(struct sec_cipher_ctx *c_ctx, + struct crypto_authenc_keys *keys) +{ + switch (keys->enckeylen) { + case AES_KEYSIZE_128: + c_ctx->c_key_len = SEC_CKEY_128BIT; + break; + case AES_KEYSIZE_192: + c_ctx->c_key_len = SEC_CKEY_192BIT; + break; + case AES_KEYSIZE_256: + c_ctx->c_key_len = SEC_CKEY_256BIT; + break; + default: + pr_err("hisi_sec2: aead aes key error!\n"); + return -EINVAL; + } + memcpy(c_ctx->c_key, keys->enckey, keys->enckeylen); + + return 0; +} + +static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx, + struct crypto_authenc_keys *keys) +{ + struct crypto_shash *hash_tfm = ctx->hash_tfm; + SHASH_DESC_ON_STACK(shash, hash_tfm); + int blocksize, ret; + + if (!keys->authkeylen) { + pr_err("hisi_sec2: aead auth key error!\n"); + return -EINVAL; + } + + blocksize = crypto_shash_blocksize(hash_tfm); + if (keys->authkeylen > blocksize) { + ret = crypto_shash_digest(shash, keys->authkey, + keys->authkeylen, ctx->a_key); + if (ret) { + pr_err("hisi_sec2: aead auth disgest error!\n"); + return -EINVAL; + } + ctx->a_key_len = blocksize; + } else { + memcpy(ctx->a_key, keys->authkey, keys->authkeylen); + ctx->a_key_len = keys->authkeylen; + } + + return 0; +} + +static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key, + const u32 keylen, const enum sec_hash_alg a_alg, + const enum sec_calg c_alg, + const enum sec_mac_len mac_len, + const enum sec_cmode c_mode) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct crypto_authenc_keys keys; + int ret; + + ctx->a_ctx.a_alg = a_alg; + ctx->c_ctx.c_alg = c_alg; + ctx->a_ctx.mac_len = mac_len; + c_ctx->c_mode = c_mode; + + if (crypto_authenc_extractkeys(&keys, key, keylen)) + goto bad_key; + + ret = sec_aead_aes_set_key(c_ctx, &keys); + if (ret) { + dev_err(SEC_CTX_DEV(ctx), "set sec cipher key err!\n"); + goto bad_key; + } + + ret = sec_aead_auth_set_key(&ctx->a_ctx, &keys); + if (ret) { + dev_err(SEC_CTX_DEV(ctx), "set sec auth key err!\n"); + goto bad_key; + } + + return 0; +bad_key: + memzero_explicit(&keys, sizeof(struct crypto_authenc_keys)); + + return -EINVAL; +} + + +#define GEN_SEC_AEAD_SETKEY_FUNC(name, aalg, calg, maclen, cmode) \ +static int sec_setkey_##name(struct crypto_aead *tfm, const u8 *key, \ + u32 keylen) \ +{ \ + return sec_aead_setkey(tfm, key, keylen, aalg, calg, maclen, cmode);\ +} + +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha1, SEC_A_HMAC_SHA1, + SEC_CALG_AES, SEC_HMAC_SHA1_MAC, SEC_CMODE_CBC) +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha256, SEC_A_HMAC_SHA256, + SEC_CALG_AES, SEC_HMAC_SHA256_MAC, SEC_CMODE_CBC) +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha512, SEC_A_HMAC_SHA512, + SEC_CALG_AES, SEC_HMAC_SHA512_MAC, SEC_CMODE_CBC) + +static int sec_aead_sgl_map(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aq = req->aead_req.aead_req; + + return sec_cipher_map(SEC_CTX_DEV(ctx), req, aq->src, aq->dst); +} + +static void sec_aead_sgl_unmap(struct sec_ctx *ctx, struct sec_req *req) +{ + struct device *dev = SEC_CTX_DEV(ctx); + struct sec_cipher_req *cq = &req->c_req; + struct aead_request *aq = req->aead_req.aead_req; + + sec_cipher_unmap(dev, cq, aq->src, aq->dst); +} + static int sec_request_transfer(struct sec_ctx *ctx, struct sec_req *req) { int ret; @@ -629,20 +853,31 @@ static int sec_skcipher_bd_fill(struct sec_ctx *ctx, struct sec_req *req) return 0; } -static void sec_update_iv(struct sec_req *req) +static void sec_update_iv(struct sec_req *req, enum sec_alg_type alg_type) { + struct aead_request *aead_req = req->aead_req.aead_req; struct skcipher_request *sk_req = req->c_req.sk_req; u32 iv_size = req->ctx->c_ctx.ivsize; struct scatterlist *sgl; + unsigned int cryptlen; size_t sz; + u8 *iv; if (req->c_req.encrypt) - sgl = sk_req->dst; + sgl = alg_type == SEC_SKCIPHER ? sk_req->dst : aead_req->dst; else - sgl = sk_req->src; + sgl = alg_type == SEC_SKCIPHER ? sk_req->src : aead_req->src; + + if (alg_type == SEC_SKCIPHER) { + iv = sk_req->iv; + cryptlen = sk_req->cryptlen; + } else { + iv = aead_req->iv; + cryptlen = aead_req->cryptlen; + } - sz = sg_pcopy_to_buffer(sgl, sg_nents(sgl), sk_req->iv, - iv_size, sk_req->cryptlen - iv_size); + sz = sg_pcopy_to_buffer(sgl, sg_nents(sgl), iv, iv_size, + cryptlen - iv_size); if (unlikely(sz != iv_size)) dev_err(SEC_CTX_DEV(req->ctx), "copy output iv error!\n"); } @@ -658,7 +893,7 @@ static void sec_skcipher_callback(struct sec_ctx *ctx, struct sec_req *req, /* IV output at encrypto of CBC mode */ if (!err && ctx->c_ctx.c_mode == SEC_CMODE_CBC && req->c_req.encrypt) - sec_update_iv(req); + sec_update_iv(req, SEC_SKCIPHER); if (req->fake_busy) sk_req->base.complete(&sk_req->base, -EINPROGRESS); @@ -666,6 +901,102 @@ static void sec_skcipher_callback(struct sec_ctx *ctx, struct sec_req *req, sk_req->base.complete(&sk_req->base, err); } +static void sec_aead_copy_iv(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + u8 *c_ivin = req->qp_ctx->res[req->req_id].c_ivin; + + memcpy(c_ivin, aead_req->iv, ctx->c_ctx.ivsize); +} + +static void sec_auth_bd_fill_ex(struct sec_auth_ctx *ctx, int dir, + struct sec_req *req, struct sec_sqe *sec_sqe) +{ + struct sec_aead_req *a_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct aead_request *aq = a_req->aead_req; + + sec_sqe->type2.a_key_addr = cpu_to_le64(ctx->a_key_dma); + + sec_sqe->type2.mac_key_alg = + cpu_to_le32(ctx->mac_len / SEC_SQE_LEN_RATE); + + sec_sqe->type2.mac_key_alg |= + cpu_to_le32((u32)((ctx->a_key_len) / + SEC_SQE_LEN_RATE) << SEC_AKEY_OFFSET); + + sec_sqe->type2.mac_key_alg |= + cpu_to_le32((u32)(ctx->a_alg) << SEC_AEAD_ALG_OFFSET); + + sec_sqe->type_cipher_auth |= SEC_AUTH_TYPE1 << SEC_AUTH_OFFSET; + + if (dir) + sec_sqe->sds_sa_type &= SEC_CIPHER_AUTH; + else + sec_sqe->sds_sa_type |= SEC_AUTH_CIPHER; + + sec_sqe->type2.alen_ivllen = cpu_to_le32(c_req->c_len + aq->assoclen); + + sec_sqe->type2.cipher_src_offset = cpu_to_le16((u16)aq->assoclen); + + sec_sqe->type2.mac_addr = + cpu_to_le64(req->qp_ctx->res[req->req_id].out_mac_dma); +} + +static int sec_aead_bd_fill(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_auth_ctx *auth_ctx = &ctx->a_ctx; + struct sec_sqe *sec_sqe = &req->sec_sqe; + int ret; + + ret = sec_skcipher_bd_fill(ctx, req); + if (unlikely(ret)) { + dev_err(SEC_CTX_DEV(ctx), "skcipher bd fill is error!\n"); + return ret; + } + + sec_auth_bd_fill_ex(auth_ctx, req->c_req.encrypt, req, sec_sqe); + + return 0; +} + +static void sec_aead_callback(struct sec_ctx *c, struct sec_req *req, int err) +{ + struct aead_request *a_req = req->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(a_req); + struct sec_cipher_req *c_req = &req->c_req; + size_t authsize = crypto_aead_authsize(tfm); + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + size_t sz; + + atomic_dec(&qp_ctx->pending_reqs); + + if (!err && c->c_ctx.c_mode == SEC_CMODE_CBC && c_req->encrypt) + sec_update_iv(req, SEC_AEAD); + + /* Copy output mac */ + if (!err && c_req->encrypt) { + struct scatterlist *sgl = a_req->dst; + + sz = sg_pcopy_from_buffer(sgl, sg_nents(sgl), + qp_ctx->res[req->req_id].out_mac, + authsize, a_req->cryptlen + + a_req->assoclen); + + if (unlikely(sz != authsize)) { + dev_err(SEC_CTX_DEV(req->ctx), "copy out mac err!\n"); + err = -EINVAL; + } + } + + sec_free_req_id(req); + + if (req->fake_busy) + a_req->base.complete(&a_req->base, -EINPROGRESS); + + a_req->base.complete(&a_req->base, err); +} + static void sec_request_uninit(struct sec_ctx *ctx, struct sec_req *req) { struct sec_qp_ctx *qp_ctx = req->qp_ctx; @@ -712,7 +1043,7 @@ static int sec_process(struct sec_ctx *ctx, struct sec_req *req) /* Output IV as decrypto */ if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && !req->c_req.encrypt) - sec_update_iv(req); + sec_update_iv(req, ctx->alg_type); ret = ctx->req_op->bd_send(ctx, req); if (unlikely(ret != -EBUSY && ret != -EINPROGRESS)) { @@ -724,10 +1055,16 @@ static int sec_process(struct sec_ctx *ctx, struct sec_req *req) err_send_req: /* As failing, restore the IV from user */ - if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && !req->c_req.encrypt) - memcpy(req->c_req.sk_req->iv, - req->qp_ctx->res[req->req_id].c_ivin, - ctx->c_ctx.ivsize); + if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && !req->c_req.encrypt) { + if (ctx->alg_type == SEC_SKCIPHER) + memcpy(req->c_req.sk_req->iv, + req->qp_ctx->res[req->req_id].c_ivin, + ctx->c_ctx.ivsize); + else + memcpy(req->aead_req.aead_req->iv, + req->qp_ctx->res[req->req_id].c_ivin, + ctx->c_ctx.ivsize); + } sec_request_untransfer(ctx, req); err_uninit_req: @@ -746,6 +1083,16 @@ static const struct sec_req_op sec_skcipher_req_ops = { .process = sec_process, }; +static const struct sec_req_op sec_aead_req_ops = { + .buf_map = sec_aead_sgl_map, + .buf_unmap = sec_aead_sgl_unmap, + .do_transfer = sec_aead_copy_iv, + .bd_fill = sec_aead_bd_fill, + .bd_send = sec_bd_send, + .callback = sec_aead_callback, + .process = sec_process, +}; + static int sec_skcipher_ctx_init(struct crypto_skcipher *tfm) { struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); @@ -760,6 +1107,96 @@ static void sec_skcipher_ctx_exit(struct crypto_skcipher *tfm) sec_skcipher_uninit(tfm); } +static int sec_aead_init(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + int ret; + + crypto_aead_set_reqsize(tfm, sizeof(struct sec_req)); + ctx->alg_type = SEC_AEAD; + ctx->c_ctx.ivsize = crypto_aead_ivsize(tfm); + if (ctx->c_ctx.ivsize > SEC_IV_SIZE) { + dev_err(SEC_CTX_DEV(ctx), "get error aead iv size!\n"); + return -EINVAL; + } + + ctx->req_op = &sec_aead_req_ops; + ret = sec_ctx_base_init(ctx); + if (ret) + return ret; + + ret = sec_auth_init(ctx); + if (ret) + goto err_auth_init; + + ret = sec_cipher_init(ctx); + if (ret) + goto err_cipher_init; + + return ret; + +err_cipher_init: + sec_auth_uninit(ctx); +err_auth_init: + sec_ctx_base_uninit(ctx); + + return ret; +} + +static void sec_aead_exit(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + + sec_cipher_uninit(ctx); + sec_auth_uninit(ctx); + sec_ctx_base_uninit(ctx); +} + +static int sec_aead_ctx_init(struct crypto_aead *tfm, const char *hash_name) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + struct sec_auth_ctx *auth_ctx = &ctx->a_ctx; + int ret; + + ret = sec_aead_init(tfm); + if (ret) { + pr_err("hisi_sec2: aead init error!\n"); + return ret; + } + + auth_ctx->hash_tfm = crypto_alloc_shash(hash_name, 0, 0); + if (IS_ERR(auth_ctx->hash_tfm)) { + dev_err(SEC_CTX_DEV(ctx), "aead alloc shash error!\n"); + sec_aead_exit(tfm); + return PTR_ERR(auth_ctx->hash_tfm); + } + + return 0; +} + +static void sec_aead_ctx_exit(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + + crypto_free_shash(ctx->a_ctx.hash_tfm); + sec_aead_exit(tfm); +} + +static int sec_aead_sha1_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha1"); +} + +static int sec_aead_sha256_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha256"); +} + +static int sec_aead_sha512_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha512"); +} + static int sec_skcipher_param_check(struct sec_ctx *ctx, struct sec_req *sreq) { struct skcipher_request *sk_req = sreq->c_req.sk_req; @@ -877,25 +1314,133 @@ static struct skcipher_alg sec_skciphers[] = { AES_BLOCK_SIZE, AES_BLOCK_SIZE) }; +static int sec_aead_param_check(struct sec_ctx *ctx, struct sec_req *sreq) +{ + u8 c_alg = ctx->c_ctx.c_alg; + struct aead_request *req = sreq->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + size_t authsize = crypto_aead_authsize(tfm); + + if (unlikely(!req->src || !req->dst || !req->cryptlen)) { + dev_err(SEC_CTX_DEV(ctx), "aead input param error!\n"); + return -EINVAL; + } + + /* Support AES only */ + if (unlikely(c_alg != SEC_CALG_AES)) { + dev_err(SEC_CTX_DEV(ctx), "aead crypto alg error!\n"); + return -EINVAL; + + } + if (sreq->c_req.encrypt) + sreq->c_req.c_len = req->cryptlen; + else + sreq->c_req.c_len = req->cryptlen - authsize; + + if (unlikely(sreq->c_req.c_len & (AES_BLOCK_SIZE - 1))) { + dev_err(SEC_CTX_DEV(ctx), "aead crypto length error!\n"); + return -EINVAL; + } + + return 0; +} + +static int sec_aead_crypto(struct aead_request *a_req, bool encrypt) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(a_req); + struct sec_req *req = aead_request_ctx(a_req); + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + int ret; + + req->aead_req.aead_req = a_req; + req->c_req.encrypt = encrypt; + req->ctx = ctx; + + ret = sec_aead_param_check(ctx, req); + if (unlikely(ret)) + return -EINVAL; + + return ctx->req_op->process(ctx, req); +} + +static int sec_aead_encrypt(struct aead_request *a_req) +{ + return sec_aead_crypto(a_req, true); +} + +static int sec_aead_decrypt(struct aead_request *a_req) +{ + return sec_aead_crypto(a_req, false); +} + +#define SEC_AEAD_GEN_ALG(sec_cra_name, sec_set_key, ctx_init,\ + ctx_exit, blk_size, iv_size, max_authsize)\ +{\ + .base = {\ + .cra_name = sec_cra_name,\ + .cra_driver_name = "hisi_sec_"sec_cra_name,\ + .cra_priority = SEC_PRIORITY,\ + .cra_flags = CRYPTO_ALG_ASYNC,\ + .cra_blocksize = blk_size,\ + .cra_ctxsize = sizeof(struct sec_ctx),\ + .cra_module = THIS_MODULE,\ + },\ + .init = ctx_init,\ + .exit = ctx_exit,\ + .setkey = sec_set_key,\ + .decrypt = sec_aead_decrypt,\ + .encrypt = sec_aead_encrypt,\ + .ivsize = iv_size,\ + .maxauthsize = max_authsize,\ +} + +#define SEC_AEAD_ALG(algname, keyfunc, aead_init, blksize, ivsize, authsize)\ + SEC_AEAD_GEN_ALG(algname, keyfunc, aead_init,\ + sec_aead_ctx_exit, blksize, ivsize, authsize) + +static struct aead_alg sec_aeads[] = { + SEC_AEAD_ALG("authenc(hmac(sha1),cbc(aes))", + sec_setkey_aes_cbc_sha1, sec_aead_sha1_ctx_init, + AES_BLOCK_SIZE, AES_BLOCK_SIZE, SHA1_DIGEST_SIZE), + + SEC_AEAD_ALG("authenc(hmac(sha256),cbc(aes))", + sec_setkey_aes_cbc_sha256, sec_aead_sha256_ctx_init, + AES_BLOCK_SIZE, AES_BLOCK_SIZE, SHA256_DIGEST_SIZE), + + SEC_AEAD_ALG("authenc(hmac(sha512),cbc(aes))", + sec_setkey_aes_cbc_sha512, sec_aead_sha512_ctx_init, + AES_BLOCK_SIZE, AES_BLOCK_SIZE, SHA512_DIGEST_SIZE), +}; + int sec_register_to_crypto(void) { int ret = 0; /* To avoid repeat register */ - mutex_lock(&sec_algs_lock); - if (++sec_active_devs == 1) + if (atomic_add_return(1, &sec_active_devs) == 1) { ret = crypto_register_skciphers(sec_skciphers, ARRAY_SIZE(sec_skciphers)); - mutex_unlock(&sec_algs_lock); + if (ret) + return ret; + + ret = crypto_register_aeads(sec_aeads, ARRAY_SIZE(sec_aeads)); + if (ret) + goto reg_aead_fail; + } + + return ret; + +reg_aead_fail: + crypto_unregister_skciphers(sec_skciphers, ARRAY_SIZE(sec_skciphers)); return ret; } void sec_unregister_from_crypto(void) { - mutex_lock(&sec_algs_lock); - if (--sec_active_devs == 0) + if (atomic_sub_return(1, &sec_active_devs) == 0) { crypto_unregister_skciphers(sec_skciphers, ARRAY_SIZE(sec_skciphers)); - mutex_unlock(&sec_algs_lock); + crypto_unregister_aeads(sec_aeads, ARRAY_SIZE(sec_aeads)); + } } diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.h b/drivers/crypto/hisilicon/sec2/sec_crypto.h index 46b3a35..b2786e1 100644 --- a/drivers/crypto/hisilicon/sec2/sec_crypto.h +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.h @@ -14,6 +14,18 @@ enum sec_calg { SEC_CALG_SM4 = 0x3, }; +enum sec_hash_alg { + SEC_A_HMAC_SHA1 = 0x10, + SEC_A_HMAC_SHA256 = 0x11, + SEC_A_HMAC_SHA512 = 0x15, +}; + +enum sec_mac_len { + SEC_HMAC_SHA1_MAC = 20, + SEC_HMAC_SHA256_MAC = 32, + SEC_HMAC_SHA512_MAC = 64, +}; + enum sec_cmode { SEC_CMODE_ECB = 0x0, SEC_CMODE_CBC = 0x1, @@ -34,6 +46,12 @@ enum sec_bd_type { SEC_BD_TYPE2 = 0x2, }; +enum sec_auth { + SEC_NO_AUTH = 0x0, + SEC_AUTH_TYPE1 = 0x1, + SEC_AUTH_TYPE2 = 0x2, +}; + enum sec_cipher_dir { SEC_CIPHER_ENC = 0x1, SEC_CIPHER_DEC = 0x2,