From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_HIGH,UNPARSEABLE_RELAY,URIBL_BLOCKED,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 32935C433F5 for ; Thu, 30 Aug 2018 15:00:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B13C720834 for ; Thu, 30 Aug 2018 15:00:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="0BlnkGfs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B13C720834 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729307AbeH3TDR (ORCPT ); Thu, 30 Aug 2018 15:03:17 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:43272 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728449AbeH3TDR (ORCPT ); Thu, 30 Aug 2018 15:03:17 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w7UExS5a171637; Thu, 30 Aug 2018 15:00:22 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=W8fdyMeKSmX92a0v4tFrDoRNqHhblE332D3juN4DitM=; b=0BlnkGfs5shZAl5/6nlBil7rONJnivMapk4Q54kz5vIv07IHDEqu5b7XdYS+EuBWgW2O +2vqMiRNN7rhHRZnHjbrZF66YqTmknNaGGaeY5CojoBTGnvedPqoFFD6ZtQ0RBPJqPW5 B052H4zKixV5HawYDngSADFPVykcIPPY0FVZeDPTVBcOSgjHHO2ZvxWdoeHe/Pgdv7uC Eej6zUgucUt69ipnwiNtlQDGXQ1z4abVOyVyrulN7xAKpAQSZqRWNMOG6Xk7Hl6i9lgd FbZQBkN+LL4SYBQVzGxURwAXLx6Otd6/4wn1+ncMSwywYf9wKOsO0a91kJY6fDsTZoFL bw== Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by aserp2120.oracle.com with ESMTP id 2m2y2pw1y5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 30 Aug 2018 15:00:22 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w7UF0Lhx002644 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 30 Aug 2018 15:00:21 GMT Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w7UF0J0f015557; Thu, 30 Aug 2018 15:00:20 GMT Received: from ca-mkp.ca.oracle.com (/10.156.108.201) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 30 Aug 2018 08:00:19 -0700 From: "Martin K. Petersen" To: herbert@gondor.apana.org.au Cc: Jeff.Lien@wdc.com, ard.biesheuvel@linaro.org, david.darrington@wdc.com, hch@infradead.org, jeff.furlong@wdc.com, linux-block@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, tim.c.chen@linux.intel.com Subject: [PATCH v2 1/3] crypto: Introduce notifier for new crypto algorithms Date: Thu, 30 Aug 2018 11:00:14 -0400 Message-Id: <20180830150016.15661-1-martin.petersen@oracle.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180827060918.tfz7ljufqhlej4kq@gondor.apana.org.au> References: <20180827060918.tfz7ljufqhlej4kq@gondor.apana.org.au> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9000 signatures=668708 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1808300155 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce a facility that can be used to receive a notification callback when a new algorithm becomes available. This can be used by existing crypto registrations to trigger a switch from a software-only algorithm to a hardware-accelerated version. A new CRYPTO_MSG_ALG_LOADED state is introduced to the existing crypto notification chain, and the register/unregister functions are exported so they can be called by subsystems outside of crypto. Signed-off-by: Martin K. Petersen Suggested-by: Herbert Xu --- crypto/algapi.c | 2 ++ crypto/algboss.c | 2 ++ crypto/internal.h | 8 -------- include/crypto/algapi.h | 10 ++++++++++ 4 files changed, 14 insertions(+), 8 deletions(-) diff --git a/crypto/algapi.c b/crypto/algapi.c index c0755cf4f53f..33522a147412 100644 --- a/crypto/algapi.c +++ b/crypto/algapi.c @@ -367,6 +367,8 @@ static void crypto_wait_for_test(struct crypto_larval *larval) err = wait_for_completion_killable(&larval->completion); WARN_ON(err); + if (!err) + crypto_probing_notify(CRYPTO_MSG_ALG_LOADED, larval); out: crypto_larval_kill(&larval->alg); diff --git a/crypto/algboss.c b/crypto/algboss.c index 5e6df2a087fa..527b44d0af21 100644 --- a/crypto/algboss.c +++ b/crypto/algboss.c @@ -274,6 +274,8 @@ static int cryptomgr_notify(struct notifier_block *this, unsigned long msg, return cryptomgr_schedule_probe(data); case CRYPTO_MSG_ALG_REGISTER: return cryptomgr_schedule_test(data); + case CRYPTO_MSG_ALG_LOADED: + break; } return NOTIFY_DONE; diff --git a/crypto/internal.h b/crypto/internal.h index 9a3f39939fba..ef769b5e8ad3 100644 --- a/crypto/internal.h +++ b/crypto/internal.h @@ -26,12 +26,6 @@ #include #include -/* Crypto notification events. */ -enum { - CRYPTO_MSG_ALG_REQUEST, - CRYPTO_MSG_ALG_REGISTER, -}; - struct crypto_instance; struct crypto_template; @@ -90,8 +84,6 @@ struct crypto_alg *crypto_find_alg(const char *alg_name, void *crypto_alloc_tfm(const char *alg_name, const struct crypto_type *frontend, u32 type, u32 mask); -int crypto_register_notifier(struct notifier_block *nb); -int crypto_unregister_notifier(struct notifier_block *nb); int crypto_probing_notify(unsigned long val, void *v); unsigned int crypto_alg_extsize(struct crypto_alg *alg); diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index bd5e8ccf1687..807501a4a754 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -425,4 +425,14 @@ static inline void crypto_yield(u32 flags) #endif } +int crypto_register_notifier(struct notifier_block *nb); +int crypto_unregister_notifier(struct notifier_block *nb); + +/* Crypto notification events. */ +enum { + CRYPTO_MSG_ALG_REQUEST, + CRYPTO_MSG_ALG_REGISTER, + CRYPTO_MSG_ALG_LOADED, +}; + #endif /* _CRYPTO_ALGAPI_H */ -- 2.17.1