From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 23F161FE451; Fri, 1 Aug 2025 04:36:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754023017; cv=none; b=mC2PMj2d9obOrJv/o9E8yN3U58smqVpisgFLPRscoOBPqyZS0mV9vZMBslRAZm0WiEYcLnBZTBS9NPkpczOI3d1nKqd+b1BZY+JBC8wpPiQpYqwn9rap69OlCDsafOZ4h74VEBfa4opiLtsb7p5TwQ87VoAq+YNBrZU0yzhgONk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754023017; c=relaxed/simple; bh=Kmk+iJsQT2Exsw/kR1m8SAtMwjqShpsgO63jDQplw8s=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=DSY2ykomM56/fo2UGxgul3I+Tb17m1rhHd0xRhcSwN5fPlgRXJArN2lPwVh88Y4c8bHJT3jyY+bbtmsxUV4LazbbYlicTa5crJEVWGjBcwoW1UDm3BD+hNkc7jdYk68sqXo6UKVvM/doz/Kkvq4VaATs3Wq4dC9C573U7jLsr2U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=FRkAvmmE; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="FRkAvmmE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1754023015; x=1785559015; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Kmk+iJsQT2Exsw/kR1m8SAtMwjqShpsgO63jDQplw8s=; b=FRkAvmmEy/wgUSBKz7YLh5RiCAoWuvgUshtmRhIvAuSbTacMAH4JDHPk aq3TdkSQvbqYnifvjmcC+7cFrt0uJDlbaW6q/US7SSUH9QtCbEsJI4fYe XSY6xEPao133EyywPdFezCIE0f033x1v7Ehmqj+5GcWTrwXeN2pP0OAcz ju7+3k1WubXkBzbiLCF4PQUplGzHjn4pM8oF880c51x6Ps4JcEZdO4zbh +U2rfPuhRkgJkaDAKrP/mRrF0eQvk/M/JZWIdgWlkMn36EMcY0KdycCmq e1Xv2Wm2lW5NyqujwpDuHnj4Q2kjBkG45w0Alx4XymsvHgJ6S5shJzfNv Q==; X-CSE-ConnectionGUID: j64CGy5zSmmM1K9eqFlWeQ== X-CSE-MsgGUID: GfOEOTcVSiCQgt4Vc9NqMw== X-IronPort-AV: E=McAfee;i="6800,10657,11508"; a="73820290" X-IronPort-AV: E=Sophos;i="6.17,255,1747724400"; d="scan'208";a="73820290" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jul 2025 21:36:45 -0700 X-CSE-ConnectionGUID: HQ+jdxk6RnOiSN724BwVlg== X-CSE-MsgGUID: 3rcGpta2QbWn93R7RBNzZA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,255,1747724400"; d="scan'208";a="163796268" Received: from jf5300-b11a338t.jf.intel.com ([10.242.51.115]) by orviesa008.jf.intel.com with ESMTP; 31 Jul 2025 21:36:45 -0700 From: Kanchana P Sridhar To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, hannes@cmpxchg.org, yosry.ahmed@linux.dev, nphamcs@gmail.com, chengming.zhou@linux.dev, usamaarif642@gmail.com, ryan.roberts@arm.com, 21cnbao@gmail.com, ying.huang@linux.alibaba.com, akpm@linux-foundation.org, senozhatsky@chromium.org, linux-crypto@vger.kernel.org, herbert@gondor.apana.org.au, davem@davemloft.net, clabbe@baylibre.com, ardb@kernel.org, ebiggers@google.com, surenb@google.com, kristen.c.accardi@intel.com, vinicius.gomes@intel.com Cc: wajdi.k.feghali@intel.com, vinodh.gopal@intel.com, kanchana.p.sridhar@intel.com Subject: [PATCH v11 12/24] crypto: acomp - Add "void *kernel_data" in "struct acomp_req" for kernel users. Date: Thu, 31 Jul 2025 21:36:30 -0700 Message-Id: <20250801043642.8103-13-kanchana.p.sridhar@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20250801043642.8103-1-kanchana.p.sridhar@intel.com> References: <20250801043642.8103-1-kanchana.p.sridhar@intel.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This commit adds a "void *kernel_data" member in "struct acomp_req": @kernel_data: Private API kernel code data for kernel users This allows kernel modules such as zswap and zram to input driver data without interfering with existing usage of acomp_req->base.data. Since acomp_request_set_params() is the main interface for kernel users to initialize the acomp_req members, this routine sets acomp_req->kernel_data to NULL. Kernel users such as zswap will need to explicitly set acomp_req->kernel_data for interacting with crypto_acomp_[de]compress(). This usage model will be covered in a separate patch-series. Signed-off-by: Kanchana P Sridhar --- include/crypto/acompress.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h index 9eacb9fa375d7..0312322d2ca03 100644 --- a/include/crypto/acompress.h +++ b/include/crypto/acompress.h @@ -79,6 +79,7 @@ struct acomp_req_chain { * @dvirt: Destination virtual address * @slen: Size of the input buffer * @dlen: Size of the output buffer and number of bytes produced + * @kernel_data: Private API kernel code data for kernel users * @chain: Private API code data, do not use * @__ctx: Start of private context data */ @@ -95,6 +96,7 @@ struct acomp_req { unsigned int slen; unsigned int dlen; + void *kernel_data; struct acomp_req_chain chain; void *__ctx[] CRYPTO_MINALIGN_ATTR; @@ -354,6 +356,7 @@ static inline void acomp_request_set_params(struct acomp_req *req, req->dst = dst; req->slen = slen; req->dlen = dlen; + req->kernel_data = NULL; req->base.flags &= ~(CRYPTO_ACOMP_REQ_SRC_VIRT | CRYPTO_ACOMP_REQ_SRC_NONDMA | -- 2.27.0