Path: csiph.com!weretis.net!feeder4.news.weretis.net!news.mixmin.net!aioe.org!bofh.it!news.nic.it!robomod From: Gilad Ben-Yossef Newsgroups: linux.kernel Subject: [PATCH v2 03/11] crypto: move pub key to generic async completion Date: Mon, 29 May 2017 10:30:01 +0200 Message-ID: References: X-Original-To: Herbert Xu , "David S. Miller" , Jonathan Corbet , David Howells , Alasdair Kergon , Mike Snitzer , dm-devel@redhat.com, Shaohua Li , Steve French , "Theodore Y. Ts'o" , Jaegeuk Kim , Mimi Zohar , Dmitry Kasatkin , James Morris , "Serge E. Hallyn" X-Mailer: git-send-email 2.1.4 Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 70 Organization: linux.* mail to news gateway X-Original-Cc: Eric Biggers , Ofir Drang , Pavel Shilovsky , linux-crypto@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, keyrings@vger.kernel.org, linux-raid@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-fscrypt@vger.kernel.org, linux-ima-devel@lists.sourceforge.net, linux-ima-user@lists.sourceforge.net, linux-security-module@vger.kernel.org X-Original-Date: Mon, 29 May 2017 11:22:50 +0300 X-Original-Message-ID: <1496046180-21962-4-git-send-email-gilad@benyossef.com> X-Original-References: <1496046180-21962-1-git-send-email-gilad@benyossef.com> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1652286 public_key_verify_signature() is starting an async crypto op and waiting for it to complete. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef --- crypto/asymmetric_keys/public_key.c | 28 ++++------------------------ 1 file changed, 4 insertions(+), 24 deletions(-) diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c index 3cd6e12..d916235 100644 --- a/crypto/asymmetric_keys/public_key.c +++ b/crypto/asymmetric_keys/public_key.c @@ -57,29 +57,13 @@ static void public_key_destroy(void *payload0, void *payload3) public_key_signature_free(payload3); } -struct public_key_completion { - struct completion completion; - int err; -}; - -static void public_key_verify_done(struct crypto_async_request *req, int err) -{ - struct public_key_completion *compl = req->data; - - if (err == -EINPROGRESS) - return; - - compl->err = err; - complete(&compl->completion); -} - /* * Verify a signature using a public key. */ int public_key_verify_signature(const struct public_key *pkey, const struct public_key_signature *sig) { - struct public_key_completion compl; + struct crypto_wait cwait; struct crypto_akcipher *tfm; struct akcipher_request *req; struct scatterlist sig_sg, digest_sg; @@ -131,20 +115,16 @@ int public_key_verify_signature(const struct public_key *pkey, sg_init_one(&digest_sg, output, outlen); akcipher_request_set_crypt(req, &sig_sg, &digest_sg, sig->s_size, outlen); - init_completion(&compl.completion); + crypto_init_wait(&cwait); akcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, - public_key_verify_done, &compl); + crypto_req_done, &cwait); /* Perform the verification calculation. This doesn't actually do the * verification, but rather calculates the hash expected by the * signature and returns that to us. */ - ret = crypto_akcipher_verify(req); - if ((ret == -EINPROGRESS) || (ret == -EBUSY)) { - wait_for_completion(&compl.completion); - ret = compl.err; - } + ret = crypto_wait_req(crypto_akcipher_verify(req), &cwait); if (ret < 0) goto out_free_output; -- 2.1.4