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Tue, 20 Apr 2021 11:46:19 +0000 Received: from AM0PR04MB5650.eurprd04.prod.outlook.com ([fe80::756a:86b8:8283:733d]) by AM0PR04MB5650.eurprd04.prod.outlook.com ([fe80::756a:86b8:8283:733d%6]) with mapi id 15.20.4042.024; Tue, 20 Apr 2021 11:46:19 +0000 From: Varad Gautam To: linux-crypto@vger.kernel.org CC: varad.gautam@suse.com, dhowells@redhat.com, herbert@gondor.apana.org.au, davem@davemloft.net, vt@altlinux.org, tianjia.zhang@linux.alibaba.com, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, jarkko@kernel.org Subject: [PATCH v3 04/18] crypto: rsa-pkcs1pad: Pull out child req processing code into helpers Date: Tue, 20 Apr 2021 13:41:09 +0200 Message-ID: <20210420114124.9684-5-varad.gautam@suse.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210420114124.9684-1-varad.gautam@suse.com> References: <20210420114124.9684-1-varad.gautam@suse.com> Content-Transfer-Encoding: quoted-printable Content-Type: text/plain X-Originating-IP: [95.90.93.216] X-ClientProxiedBy: PR3P189CA0083.EURP189.PROD.OUTLOOK.COM (2603:10a6:102:b4::28) To AM0PR04MB5650.eurprd04.prod.outlook.com (2603:10a6:208:128::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from xps13.suse.de (95.90.93.216) by PR3P189CA0083.EURP189.PROD.OUTLOOK.COM (2603:10a6:102:b4::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4042.16 via Frontend Transport; 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Add helpers rsapad_akcipher_setup_child and rsapad_akcipher_req_complete for req setup and callback handling, and switch pkcs1pad operations to use these. Signed-off-by: Varad Gautam --- crypto/rsa-pkcs1pad.c | 106 +++++++++++++++++++----------------------- 1 file changed, 49 insertions(+), 57 deletions(-) diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c index 849573f6b44b3..6329c79316d24 100644 --- a/crypto/rsa-pkcs1pad.c +++ b/crypto/rsa-pkcs1pad.c @@ -171,6 +171,38 @@ static void rsapad_akcipher_sg_set_buf(struct scatterl= ist *sg, void *buf, sg_chain(sg, nsegs, next); } =20 +typedef int (*rsa_akcipher_complete_cb)(struct akcipher_request *, int); +static void rsapad_akcipher_req_complete(struct crypto_async_request *chil= d_async_req, + int err, rsa_akcipher_complete_cb cb) +{ + struct akcipher_request *req =3D child_async_req->data; + struct crypto_async_request async_req; + + if (err =3D=3D -EINPROGRESS) + return; + + async_req.data =3D req->base.data; + async_req.tfm =3D crypto_akcipher_tfm(crypto_akcipher_reqtfm(req)); + async_req.flags =3D child_async_req->flags; + req->base.complete(&async_req, cb(req, err)); +} + +static void rsapad_akcipher_setup_child(struct akcipher_request *req, + struct scatterlist *src_sg, + struct scatterlist *dst_sg, + unsigned int src_len, + unsigned int dst_len, + crypto_completion_t cb) +{ + struct crypto_akcipher *tfm =3D crypto_akcipher_reqtfm(req); + struct pkcs1pad_ctx *ctx =3D akcipher_tfm_ctx(tfm); + struct pkcs1pad_request *req_ctx =3D akcipher_request_ctx(req); + + akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); + akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, cb, r= eq); + akcipher_request_set_crypt(&req_ctx->child_req, src_sg, dst_sg, src_len, = dst_len); +} + static int pkcs1pad_encrypt_sign_complete(struct akcipher_request *req, in= t err) { struct crypto_akcipher *tfm =3D crypto_akcipher_reqtfm(req); @@ -213,17 +245,8 @@ static int pkcs1pad_encrypt_sign_complete(struct akcip= her_request *req, int err) static void pkcs1pad_encrypt_sign_complete_cb( struct crypto_async_request *child_async_req, int err) { - struct akcipher_request *req =3D child_async_req->data; - struct crypto_async_request async_req; - - if (err =3D=3D -EINPROGRESS) - return; - - async_req.data =3D req->base.data; - async_req.tfm =3D crypto_akcipher_tfm(crypto_akcipher_reqtfm(req)); - async_req.flags =3D child_async_req->flags; - req->base.complete(&async_req, - pkcs1pad_encrypt_sign_complete(req, err)); + rsapad_akcipher_req_complete(child_async_req, err, + pkcs1pad_encrypt_sign_complete); } =20 static int pkcs1pad_encrypt(struct akcipher_request *req) @@ -259,13 +282,10 @@ static int pkcs1pad_encrypt(struct akcipher_request *= req) rsapad_akcipher_sg_set_buf(req_ctx->in_sg, req_ctx->in_buf, ctx->key_size - 1 - req->src_len, req->src); =20 - akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); - akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, - pkcs1pad_encrypt_sign_complete_cb, req); - /* Reuse output buffer */ - akcipher_request_set_crypt(&req_ctx->child_req, req_ctx->in_sg, - req->dst, ctx->key_size - 1, req->dst_len); + rsapad_akcipher_setup_child(req, req_ctx->in_sg, req->dst, + ctx->key_size - 1, req->dst_len, + pkcs1pad_encrypt_sign_complete_cb); =20 err =3D crypto_akcipher_encrypt(&req_ctx->child_req); if (err !=3D -EINPROGRESS && err !=3D -EBUSY) @@ -331,16 +351,7 @@ static int pkcs1pad_decrypt_complete(struct akcipher_r= equest *req, int err) static void pkcs1pad_decrypt_complete_cb( struct crypto_async_request *child_async_req, int err) { - struct akcipher_request *req =3D child_async_req->data; - struct crypto_async_request async_req; - - if (err =3D=3D -EINPROGRESS) - return; - - async_req.data =3D req->base.data; - async_req.tfm =3D crypto_akcipher_tfm(crypto_akcipher_reqtfm(req)); - async_req.flags =3D child_async_req->flags; - req->base.complete(&async_req, pkcs1pad_decrypt_complete(req, err)); + rsapad_akcipher_req_complete(child_async_req, err, pkcs1pad_decrypt_compl= ete); } =20 static int pkcs1pad_decrypt(struct akcipher_request *req) @@ -360,14 +371,10 @@ static int pkcs1pad_decrypt(struct akcipher_request *= req) rsapad_akcipher_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf, ctx->key_size, NULL); =20 - akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); - akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, - pkcs1pad_decrypt_complete_cb, req); - /* Reuse input buffer, output to a new buffer */ - akcipher_request_set_crypt(&req_ctx->child_req, req->src, - req_ctx->out_sg, req->src_len, - ctx->key_size); + rsapad_akcipher_setup_child(req, req->src, req_ctx->out_sg, + req->src_len, ctx->key_size, + pkcs1pad_decrypt_complete_cb); =20 err =3D crypto_akcipher_decrypt(&req_ctx->child_req); if (err !=3D -EINPROGRESS && err !=3D -EBUSY) @@ -418,13 +425,10 @@ static int pkcs1pad_sign(struct akcipher_request *req= ) rsapad_akcipher_sg_set_buf(req_ctx->in_sg, req_ctx->in_buf, ctx->key_size - 1 - req->src_len, req->src); =20 - akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); - akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, - pkcs1pad_encrypt_sign_complete_cb, req); - /* Reuse output buffer */ - akcipher_request_set_crypt(&req_ctx->child_req, req_ctx->in_sg, - req->dst, ctx->key_size - 1, req->dst_len); + rsapad_akcipher_setup_child(req, req_ctx->in_sg, req->dst, + ctx->key_size - 1, req->dst_len, + pkcs1pad_encrypt_sign_complete_cb); =20 err =3D crypto_akcipher_decrypt(&req_ctx->child_req); if (err !=3D -EINPROGRESS && err !=3D -EBUSY) @@ -509,16 +513,8 @@ static int pkcs1pad_verify_complete(struct akcipher_re= quest *req, int err) static void pkcs1pad_verify_complete_cb( struct crypto_async_request *child_async_req, int err) { - struct akcipher_request *req =3D child_async_req->data; - struct crypto_async_request async_req; - - if (err =3D=3D -EINPROGRESS) - return; - - async_req.data =3D req->base.data; - async_req.tfm =3D crypto_akcipher_tfm(crypto_akcipher_reqtfm(req)); - async_req.flags =3D child_async_req->flags; - req->base.complete(&async_req, pkcs1pad_verify_complete(req, err)); + rsapad_akcipher_req_complete(child_async_req, err, + pkcs1pad_verify_complete); } =20 /* @@ -548,14 +544,10 @@ static int pkcs1pad_verify(struct akcipher_request *r= eq) rsapad_akcipher_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf, ctx->key_size, NULL); =20 - akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); - akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, - pkcs1pad_verify_complete_cb, req); - /* Reuse input buffer, output to a new buffer */ - akcipher_request_set_crypt(&req_ctx->child_req, req->src, - req_ctx->out_sg, req->src_len, - ctx->key_size); + rsapad_akcipher_setup_child(req, req->src, req_ctx->out_sg, + req->src_len, ctx->key_size, + pkcs1pad_verify_complete_cb); =20 err =3D crypto_akcipher_encrypt(&req_ctx->child_req); if (err !=3D -EINPROGRESS && err !=3D -EBUSY) --=20 2.30.2