Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753237AbbK2PDx (ORCPT ); Sun, 29 Nov 2015 10:03:53 -0500 Received: from mga14.intel.com ([192.55.52.115]:45630 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752793AbbK2PDc (ORCPT ); Sun, 29 Nov 2015 10:03:32 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,360,1444719600"; d="scan'208";a="609433511" From: Rui Wang To: herbert@gondor.apana.org.au Cc: ying.huang@intel.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, rui.y.wang@intel.com Subject: [PATCH 1/2] crypto: ghash-clmulni - Fix load failure Date: Sun, 29 Nov 2015 22:45:33 +0800 Message-Id: <1448808334-8424-2-git-send-email-rui.y.wang@intel.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1448808334-8424-1-git-send-email-rui.y.wang@intel.com> References: <1448808334-8424-1-git-send-email-rui.y.wang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2379 Lines: 70 ghash_clmulni_intel fails to load on Linux 4.3+ with the following message: "modprobe: ERROR: could not insert 'ghash_clmulni_intel': Invalid argument" After 8996eafdc ("crypto: ahash - ensure statesize is non-zero") all ahash drivers are required to implement import()/export(), and must have a non- zero statesize. This patch has been tested with the algif_hash interface. The calculated digest values, after several rounds of import()s and export()s, match those calculated by tcrypt. Signed-off-by: Rui Wang --- arch/x86/crypto/ghash-clmulni-intel_glue.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/x86/crypto/ghash-clmulni-intel_glue.c b/arch/x86/crypto/ghash-clmulni-intel_glue.c index 440df0c..a69321a 100644 --- a/arch/x86/crypto/ghash-clmulni-intel_glue.c +++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c @@ -219,6 +219,29 @@ static int ghash_async_final(struct ahash_request *req) } } +static int ghash_async_import(struct ahash_request *req, const void *in) +{ + struct ahash_request *cryptd_req = ahash_request_ctx(req); + struct shash_desc *desc = cryptd_shash_desc(cryptd_req); + struct ghash_desc_ctx *dctx = shash_desc_ctx(desc); + + ghash_async_init(req); + memcpy(dctx, in, sizeof(*dctx)); + return 0; + +} + +static int ghash_async_export(struct ahash_request *req, void *out) +{ + struct ahash_request *cryptd_req = ahash_request_ctx(req); + struct shash_desc *desc = cryptd_shash_desc(cryptd_req); + struct ghash_desc_ctx *dctx = shash_desc_ctx(desc); + + memcpy(out, dctx, sizeof(*dctx)); + return 0; + +} + static int ghash_async_digest(struct ahash_request *req) { struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); @@ -288,8 +311,11 @@ static struct ahash_alg ghash_async_alg = { .final = ghash_async_final, .setkey = ghash_async_setkey, .digest = ghash_async_digest, + .export = ghash_async_export, + .import = ghash_async_import, .halg = { .digestsize = GHASH_DIGEST_SIZE, + .statesize = sizeof(struct ghash_desc_ctx), .base = { .cra_name = "ghash", .cra_driver_name = "ghash-clmulni", -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/