Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754417AbdFWIy7 (ORCPT ); Fri, 23 Jun 2017 04:54:59 -0400 Received: from mail-wr0-f180.google.com ([209.85.128.180]:33253 "EHLO mail-wr0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754362AbdFWIyz (ORCPT ); Fri, 23 Jun 2017 04:54:55 -0400 From: Raveendra Padasalagi To: Herbert Xu , "David S. Miller" , Rob Rice , Scott Branden , Ray Jui , Steve Lin , linux-crypto@vger.kernel.org Cc: bcm-kernel-feedback-list@broadcom.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Raveendra Padasalagi Subject: [PATCH v1] crypto: brcm - software fallback for cryptlen zero Date: Fri, 23 Jun 2017 14:24:30 +0530 Message-Id: <1498208070-15584-1-git-send-email-raveendra.padasalagi@broadcom.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1251 Lines: 33 Zero length payload requests are not handled in Broadcom SPU2 engine, so this patch adds conditional check to fallback to software implementation for AES-GCM and AES-CCM algorithms. Fixes: 9d12ba86f818 ("crypto: brcm - Add Broadcom SPU driver") Signed-off-by: Raveendra Padasalagi Reviewed-by: Ray Jui Reviewed-by: Scott Branden Cc: stable@vger.kernel.org --- Changes in v1: - Added Cc tag in the Signed-off area to send the patch to stable kernel drivers/crypto/bcm/cipher.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c index cc0d5b9..6c80863 100644 --- a/drivers/crypto/bcm/cipher.c +++ b/drivers/crypto/bcm/cipher.c @@ -2625,7 +2625,7 @@ static int aead_need_fallback(struct aead_request *req) */ if (((ctx->cipher.mode == CIPHER_MODE_GCM) || (ctx->cipher.mode == CIPHER_MODE_CCM)) && - (req->assoclen == 0)) { + ((req->assoclen == 0) || (req->cryptlen == 0))) { if ((rctx->is_encrypt && (req->cryptlen == 0)) || (!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) { flow_log("AES GCM/CCM needs fallback for 0 len req\n"); -- 1.9.1