From patchwork Thu Feb 20 09:04:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zaibo Xu X-Patchwork-Id: 198067 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3EE35C11D00 for ; Thu, 20 Feb 2020 09:09:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 11EC624654 for ; Thu, 20 Feb 2020 09:09:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726825AbgBTJJN (ORCPT ); Thu, 20 Feb 2020 04:09:13 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:56084 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726948AbgBTJJN (ORCPT ); Thu, 20 Feb 2020 04:09:13 -0500 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 4B8C89984131A4971500; Thu, 20 Feb 2020 17:09:06 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.439.0; Thu, 20 Feb 2020 17:08:57 +0800 From: Zaibo Xu To: , CC: , , , , , , , , , , , Subject: [PATCH 4/4] crypto: hisilicon/sec2 - Add pbuffer mode for SEC driver Date: Thu, 20 Feb 2020 17:04:55 +0800 Message-ID: <1582189495-38051-5-git-send-email-xuzaibo@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1582189495-38051-1-git-send-email-xuzaibo@huawei.com> References: <1582189495-38051-1-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 From: liulongfang In the scenario of SMMU translation, the SEC performance of short messages (<512Bytes) cannot meet our expectations. To avoid this, we reserve the plat buffer (PBUF) memory for small packets when creating TFM. Signed-off-by: liulongfang Signed-off-by: Zaibo Xu --- drivers/crypto/hisilicon/sec2/sec.h | 6 + drivers/crypto/hisilicon/sec2/sec_crypto.c | 244 ++++++++++++++++++++++++----- 2 files changed, 213 insertions(+), 37 deletions(-) diff --git a/drivers/crypto/hisilicon/sec2/sec.h b/drivers/crypto/hisilicon/sec2/sec.h index eab0d22..8e2e34b 100644 --- a/drivers/crypto/hisilicon/sec2/sec.h +++ b/drivers/crypto/hisilicon/sec2/sec.h @@ -11,6 +11,8 @@ /* Algorithm resource per hardware SEC queue */ struct sec_alg_res { + u8 *pbuf; + dma_addr_t pbuf_dma; u8 *c_ivin; dma_addr_t c_ivin_dma; u8 *out_mac; @@ -23,6 +25,8 @@ struct sec_cipher_req { dma_addr_t c_in_dma; struct hisi_acc_hw_sgl *c_out; dma_addr_t c_out_dma; + u8 *c_ivin; + dma_addr_t c_ivin_dma; struct skcipher_request *sk_req; u32 c_len; bool encrypt; @@ -128,6 +132,8 @@ struct sec_ctx { atomic_t dec_qcyclic; enum sec_alg_type alg_type; + bool pbuf_supported; + bool use_pbuf; struct sec_cipher_ctx c_ctx; struct sec_auth_ctx a_ctx; }; diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c index a2cfcc9..022d4bf6 100644 --- a/drivers/crypto/hisilicon/sec2/sec_crypto.c +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c @@ -46,7 +46,21 @@ #define SEC_CIPHER_AUTH 0xfe #define SEC_AUTH_CIPHER 0x1 #define SEC_MAX_MAC_LEN 64 +#define SEC_MAX_AAD_LEN 65535 #define SEC_TOTAL_MAC_SZ (SEC_MAX_MAC_LEN * QM_Q_DEPTH) + +#define SEC_PBUF_SZ 512 +#define SEC_PBUF_IV_OFFSET SEC_PBUF_SZ +#define SEC_PBUF_MAC_OFFSET (SEC_PBUF_SZ + SEC_IV_SIZE) +#define SEC_PBUF_PKG (SEC_PBUF_SZ + SEC_IV_SIZE + \ + SEC_MAX_MAC_LEN * 2) +#define SEC_PBUF_NUM (PAGE_SIZE / SEC_PBUF_PKG) +#define SEC_PBUF_PAGE_NUM (QM_Q_DEPTH / SEC_PBUF_NUM) +#define SEC_PBUF_LEFT_SZ (SEC_PBUF_PKG * (QM_Q_DEPTH - \ + SEC_PBUF_PAGE_NUM * SEC_PBUF_NUM)) +#define SEC_TOTAL_PBUF_SZ (PAGE_SIZE * SEC_PBUF_PAGE_NUM + \ + SEC_PBUF_LEFT_SZ) + #define SEC_SQE_LEN_RATE 4 #define SEC_SQE_CFLAG 2 #define SEC_SQE_AEAD_FLAG 3 @@ -110,12 +124,12 @@ 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) +static int sec_aead_verify(struct sec_req *req) { 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_out = req->aead_req.out_mac; u8 *mac = mac_out + SEC_MAX_MAC_LEN; struct scatterlist *sgl = aead_req->src; size_t sz; @@ -163,7 +177,7 @@ static void sec_req_cb(struct hisi_qp *qp, void *resp) } if (ctx->alg_type == SEC_AEAD && !req->c_req.encrypt) - err = sec_aead_verify(req, qp_ctx); + err = sec_aead_verify(req); atomic64_inc(&ctx->sec->debug.dfx.recv_cnt); @@ -245,6 +259,50 @@ static void sec_free_mac_resource(struct device *dev, struct sec_alg_res *res) res->out_mac, res->out_mac_dma); } +static void sec_free_pbuf_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->pbuf) + dma_free_coherent(dev, SEC_TOTAL_PBUF_SZ, + res->pbuf, res->pbuf_dma); +} + +/* + * To improve performance, pbuffer is used for + * small packets (< 576Bytes) as IOMMU translation using. + */ +static int sec_alloc_pbuf_resource(struct device *dev, struct sec_alg_res *res) +{ + int pbuf_page_offset; + int i, j, k; + + res->pbuf = dma_alloc_coherent(dev, SEC_TOTAL_PBUF_SZ, + &res->pbuf_dma, GFP_KERNEL); + if (!res->pbuf) + return -ENOMEM; + + /* + * SEC_PBUF_PKG contains data pbuf, iv and + * out_mac : + * Every PAGE contains six SEC_PBUF_PKG + * The sec_qp_ctx contains QM_Q_DEPTH numbers of SEC_PBUF_PKG + * So we need SEC_PBUF_PAGE_NUM numbers of PAGE + * for the SEC_TOTAL_PBUF_SZ + */ + for (i = 0; i <= SEC_PBUF_PAGE_NUM; i++) { + pbuf_page_offset = PAGE_SIZE * i; + for (j = 0; j < SEC_PBUF_NUM; j++) { + k = i * SEC_PBUF_NUM + j; + if (k == QM_Q_DEPTH) + break; + res[k].pbuf = res->pbuf + + j * SEC_PBUF_PKG + pbuf_page_offset; + res[k].pbuf_dma = res->pbuf_dma + + j * SEC_PBUF_PKG + pbuf_page_offset; + } + } + return 0; +} + static int sec_alg_resource_alloc(struct sec_ctx *ctx, struct sec_qp_ctx *qp_ctx) { @@ -259,11 +317,17 @@ static int sec_alg_resource_alloc(struct sec_ctx *ctx, if (ctx->alg_type == SEC_AEAD) { ret = sec_alloc_mac_resource(dev, res); if (ret) - goto get_fail; + goto alloc_fail; + } + if (ctx->pbuf_supported) { + ret = sec_alloc_pbuf_resource(dev, res); + if (ret) { + dev_err(dev, "fail to alloc pbuf dma resource!\n"); + goto alloc_fail; + } } - return 0; -get_fail: +alloc_fail: sec_free_civ_resource(dev, res); return ret; @@ -278,6 +342,8 @@ static void sec_alg_resource_free(struct sec_ctx *ctx, if (ctx->alg_type == SEC_AEAD) sec_free_mac_resource(dev, qp_ctx->res); + if (ctx->pbuf_supported) + sec_free_pbuf_resource(dev, qp_ctx->res); } static int sec_create_qp_ctx(struct hisi_qm *qm, struct sec_ctx *ctx, @@ -368,6 +434,12 @@ static int sec_ctx_base_init(struct sec_ctx *ctx) ctx->sec = sec; ctx->hlf_q_num = sec->ctx_q_num >> 1; + if (ctx->sec->iommu_used) + ctx->pbuf_supported = true; + else + ctx->pbuf_supported = false; + ctx->use_pbuf = false; + /* Half of queue depth is taken as fake requests limit in the queue. */ ctx->fake_req_limit = QM_Q_DEPTH >> 1; ctx->qp_ctx = kcalloc(sec->ctx_q_num, sizeof(struct sec_qp_ctx), @@ -447,7 +519,6 @@ 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); @@ -591,11 +662,94 @@ GEN_SEC_SETKEY_FUNC(3des_cbc, SEC_CALG_3DES, SEC_CMODE_CBC) GEN_SEC_SETKEY_FUNC(sm4_xts, SEC_CALG_SM4, SEC_CMODE_XTS) GEN_SEC_SETKEY_FUNC(sm4_cbc, SEC_CALG_SM4, SEC_CMODE_CBC) -static int sec_cipher_map(struct device *dev, struct sec_req *req, +static int sec_cipher_pbuf_map(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *src) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct device *dev = SEC_CTX_DEV(ctx); + int copy_size, pbuf_length; + int req_id = req->req_id; + + if (ctx->alg_type == SEC_AEAD) + copy_size = aead_req->cryptlen + aead_req->assoclen; + else + copy_size = c_req->c_len; + + pbuf_length = sg_copy_to_buffer(src, sg_nents(src), + qp_ctx->res[req_id].pbuf, + copy_size); + + if (unlikely(pbuf_length != copy_size)) { + dev_err(dev, "copy src data to pbuf error!\n"); + return -EINVAL; + } + + c_req->c_in_dma = qp_ctx->res[req_id].pbuf_dma; + + if (!c_req->c_in_dma) { + dev_err(dev, "fail to set pbuffer address!\n"); + return -ENOMEM; + } + + c_req->c_out_dma = c_req->c_in_dma; + + return 0; +} + +static void sec_cipher_pbuf_unmap(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *dst) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct device *dev = SEC_CTX_DEV(ctx); + int copy_size, pbuf_length; + int req_id = req->req_id; + + if (ctx->alg_type == SEC_AEAD) + copy_size = c_req->c_len + aead_req->assoclen; + else + copy_size = c_req->c_len; + + pbuf_length = sg_copy_from_buffer(dst, sg_nents(dst), + qp_ctx->res[req_id].pbuf, + copy_size); + + if (unlikely(pbuf_length != copy_size)) + dev_err(dev, "copy pbuf data to dst error!\n"); + +} + +static int sec_cipher_map(struct sec_ctx *ctx, struct sec_req *req, struct scatterlist *src, struct scatterlist *dst) { struct sec_cipher_req *c_req = &req->c_req; + struct sec_aead_req *a_req = &req->aead_req; struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct sec_alg_res *res = &qp_ctx->res[req->req_id]; + struct device *dev = SEC_CTX_DEV(ctx); + int ret; + + if (ctx->use_pbuf) { + ret = sec_cipher_pbuf_map(ctx, req, src); + c_req->c_ivin = res->pbuf + SEC_PBUF_IV_OFFSET; + c_req->c_ivin_dma = res->pbuf_dma + SEC_PBUF_IV_OFFSET; + if (ctx->alg_type == SEC_AEAD) { + a_req->out_mac = res->pbuf + SEC_PBUF_MAC_OFFSET; + a_req->out_mac_dma = res->pbuf_dma + + SEC_PBUF_MAC_OFFSET; + } + + return ret; + } + c_req->c_ivin = res->c_ivin; + c_req->c_ivin_dma = res->c_ivin_dma; + if (ctx->alg_type == SEC_AEAD) { + a_req->out_mac = res->out_mac; + a_req->out_mac_dma = res->out_mac_dma; + } c_req->c_in = hisi_acc_sg_buf_map_to_hw_sgl(dev, src, qp_ctx->c_in_pool, @@ -626,29 +780,34 @@ static int sec_cipher_map(struct device *dev, struct sec_req *req, return 0; } -static void sec_cipher_unmap(struct device *dev, struct sec_cipher_req *req, +static void sec_cipher_unmap(struct sec_ctx *ctx, struct sec_req *req, struct scatterlist *src, struct scatterlist *dst) { - if (dst != src) - hisi_acc_sg_buf_unmap(dev, src, req->c_in); + struct sec_cipher_req *c_req = &req->c_req; + struct device *dev = SEC_CTX_DEV(ctx); - hisi_acc_sg_buf_unmap(dev, dst, req->c_out); + if (ctx->use_pbuf) { + sec_cipher_pbuf_unmap(ctx, req, dst); + } else { + if (dst != src) + hisi_acc_sg_buf_unmap(dev, src, c_req->c_in); + + hisi_acc_sg_buf_unmap(dev, dst, c_req->c_out); + } } static int sec_skcipher_sgl_map(struct sec_ctx *ctx, struct sec_req *req) { struct skcipher_request *sq = req->c_req.sk_req; - return sec_cipher_map(SEC_CTX_DEV(ctx), req, sq->src, sq->dst); + return sec_cipher_map(ctx, req, sq->src, sq->dst); } static void sec_skcipher_sgl_unmap(struct sec_ctx *ctx, struct sec_req *req) { - struct device *dev = SEC_CTX_DEV(ctx); - struct sec_cipher_req *c_req = &req->c_req; - struct skcipher_request *sk_req = c_req->sk_req; + struct skcipher_request *sq = req->c_req.sk_req; - sec_cipher_unmap(dev, c_req, sk_req->src, sk_req->dst); + sec_cipher_unmap(ctx, req, sq->src, sq->dst); } static int sec_aead_aes_set_key(struct sec_cipher_ctx *c_ctx, @@ -759,16 +918,14 @@ 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); + return sec_cipher_map(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); + sec_cipher_unmap(ctx, req, aq->src, aq->dst); } static int sec_request_transfer(struct sec_ctx *ctx, struct sec_req *req) @@ -801,9 +958,9 @@ static void sec_request_untransfer(struct sec_ctx *ctx, struct sec_req *req) static void sec_skcipher_copy_iv(struct sec_ctx *ctx, struct sec_req *req) { struct skcipher_request *sk_req = req->c_req.sk_req; - u8 *c_ivin = req->qp_ctx->res[req->req_id].c_ivin; + struct sec_cipher_req *c_req = &req->c_req; - memcpy(c_ivin, sk_req->iv, ctx->c_ctx.ivsize); + memcpy(c_req->c_ivin, sk_req->iv, ctx->c_ctx.ivsize); } static int sec_skcipher_bd_fill(struct sec_ctx *ctx, struct sec_req *req) @@ -818,8 +975,7 @@ static int sec_skcipher_bd_fill(struct sec_ctx *ctx, struct sec_req *req) memset(sec_sqe, 0, sizeof(struct sec_sqe)); sec_sqe->type2.c_key_addr = cpu_to_le64(c_ctx->c_key_dma); - sec_sqe->type2.c_ivin_addr = - cpu_to_le64(req->qp_ctx->res[req->req_id].c_ivin_dma); + sec_sqe->type2.c_ivin_addr = cpu_to_le64(c_req->c_ivin_dma); sec_sqe->type2.data_src_addr = cpu_to_le64(c_req->c_in_dma); sec_sqe->type2.data_dst_addr = cpu_to_le64(c_req->c_out_dma); @@ -836,7 +992,10 @@ static int sec_skcipher_bd_fill(struct sec_ctx *ctx, struct sec_req *req) cipher = SEC_CIPHER_DEC << SEC_CIPHER_OFFSET; sec_sqe->type_cipher_auth = bd_type | cipher; - sa_type = SEC_SGL << SEC_SRC_SGL_OFFSET; + if (ctx->use_pbuf) + sa_type = SEC_PBUF << SEC_SRC_SGL_OFFSET; + else + sa_type = SEC_SGL << SEC_SRC_SGL_OFFSET; scene = SEC_COMM_SCENE << SEC_SCENE_OFFSET; if (c_req->c_in_dma != c_req->c_out_dma) de = 0x1 << SEC_DE_OFFSET; @@ -844,7 +1003,10 @@ static int sec_skcipher_bd_fill(struct sec_ctx *ctx, struct sec_req *req) sec_sqe->sds_sa_type = (de | scene | sa_type); /* Just set DST address type */ - da_type = SEC_SGL << SEC_DST_SGL_OFFSET; + if (ctx->use_pbuf) + da_type = SEC_PBUF << SEC_DST_SGL_OFFSET; + else + da_type = SEC_SGL << SEC_DST_SGL_OFFSET; sec_sqe->sdm_addr_type |= da_type; sec_sqe->type2.clen_ivhlen |= cpu_to_le32(c_req->c_len); @@ -904,9 +1066,9 @@ static void sec_skcipher_callback(struct sec_ctx *ctx, struct sec_req *req, 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; + struct sec_cipher_req *c_req = &req->c_req; - memcpy(c_ivin, aead_req->iv, ctx->c_ctx.ivsize); + memcpy(c_req->c_ivin, aead_req->iv, ctx->c_ctx.ivsize); } static void sec_auth_bd_fill_ex(struct sec_auth_ctx *ctx, int dir, @@ -939,8 +1101,7 @@ static void sec_auth_bd_fill_ex(struct sec_auth_ctx *ctx, int dir, 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); + sec_sqe->type2.mac_addr = cpu_to_le64(a_req->out_mac_dma); } static int sec_aead_bd_fill(struct sec_ctx *ctx, struct sec_req *req) @@ -964,6 +1125,7 @@ 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_aead_req *aead_req = &req->aead_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; @@ -979,7 +1141,7 @@ static void sec_aead_callback(struct sec_ctx *c, struct sec_req *req, int err) struct scatterlist *sgl = a_req->dst; sz = sg_pcopy_from_buffer(sgl, sg_nents(sgl), - qp_ctx->res[req->req_id].out_mac, + aead_req->out_mac, authsize, a_req->cryptlen + a_req->assoclen); @@ -1031,6 +1193,7 @@ static int sec_request_init(struct sec_ctx *ctx, struct sec_req *req) static int sec_process(struct sec_ctx *ctx, struct sec_req *req) { + struct sec_cipher_req *c_req = &req->c_req; int ret; ret = sec_request_init(ctx, req); @@ -1057,12 +1220,10 @@ static int sec_process(struct sec_ctx *ctx, struct sec_req *req) /* As failing, restore the IV from user */ 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, + memcpy(req->c_req.sk_req->iv, c_req->c_ivin, ctx->c_ctx.ivsize); else - memcpy(req->aead_req.aead_req->iv, - req->qp_ctx->res[req->req_id].c_ivin, + memcpy(req->aead_req.aead_req->iv, c_req->c_ivin, ctx->c_ctx.ivsize); } @@ -1208,6 +1369,10 @@ static int sec_skcipher_param_check(struct sec_ctx *ctx, struct sec_req *sreq) return -EINVAL; } sreq->c_req.c_len = sk_req->cryptlen; + + if (ctx->pbuf_supported && sk_req->cryptlen <= SEC_PBUF_SZ) + ctx->use_pbuf = true; + if (c_alg == SEC_CALG_3DES) { if (unlikely(sk_req->cryptlen & (DES3_EDE_BLOCK_SIZE - 1))) { dev_err(dev, "skcipher 3des input length error!\n"); @@ -1321,11 +1486,16 @@ static int sec_aead_param_check(struct sec_ctx *ctx, struct sec_req *sreq) struct crypto_aead *tfm = crypto_aead_reqtfm(req); size_t authsize = crypto_aead_authsize(tfm); - if (unlikely(!req->src || !req->dst || !req->cryptlen)) { + if (unlikely(!req->src || !req->dst || !req->cryptlen || + req->assoclen > SEC_MAX_AAD_LEN)) { dev_err(SEC_CTX_DEV(ctx), "aead input param error!\n"); return -EINVAL; } + if (ctx->pbuf_supported && (req->cryptlen + req->assoclen) <= + SEC_PBUF_SZ) + ctx->use_pbuf = true; + /* Support AES only */ if (unlikely(c_alg != SEC_CALG_AES)) { dev_err(SEC_CTX_DEV(ctx), "aead crypto alg error!\n");