From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx4/EGR1viSINBQGHbXMDR4dlGx4PO7LuWXMLoFpCelj1YQsgNTcTPZCDH77JFX3RYT7kGecI ARC-Seal: i=1; a=rsa-sha256; t=1523126366; cv=none; d=google.com; s=arc-20160816; b=lff+UJl0SZQmXhIn3MKkJpd83MxYl/GtKuHdZQ4KlSNIHB/db90q0JUgmisu5btg1K fPmmggDy1rGzfOrVhPJp/mS1EzZcSqQVsDqZpR2lInoManF+TzAUJjuK1JHoqRkhe8tL rcM+k6CdizDWqvUawjfVH6yQvfgvP7u3do6BN38uyTa99xZl4PB05isaYOFP9TBz7dtv aCgUeac8kmD/z39jgvB+tzCeQDtfT6ZAQA1FR8vVTYFzVfTvDaqkTOVB/O6o1fbFgSYt KVjElQql4HEY9BHBl4QD9bUhySUJI5cFXn07LnylytvBkq9BIgEaDbXINUTC3YLdXREp OdDg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature:delivered-to:list-id:list-subscribe:list-unsubscribe :list-help:list-post:precedence:mailing-list :arc-authentication-results; bh=830I2FtaCI7kkwpzHkb1D64AA5JBuPJRaD87G/HzoCY=; b=rnue9hvQFN+J0wWbltq61dCfSMWPqdJ2ZstHAiPdl/GRNGAZXaoNOQ6sjh4yITMm3G wYe1FlUvRe8dOLblFzhjM25gl8eiLN2/zasvHaPnZnUCxnTyslG3X00rV8T2PExvyzAQ feg5HUiT9g3Ms/gl6TcZbd0gFETmqHYn8uBkF8wSt1bsRoSbjEUQk5n+XZEcpfumSwSK FHP2nrO941izG+HfotBEMhYN2v/nL2yQDWztvgLu8BBf5id4vzzmM1aM+HIvUJuxe8GH Cjb1TnDy+5aSAs8MnJY7FNO/91Dfvilx1aX3Ubx4cKLncrPeGFO/VmbwlO/zkt70j2EV 0/DA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=B8gND4Up; spf=pass (google.com: domain of kernel-hardening-return-12877-gregkh=linuxfoundation.org@lists.openwall.com designates 195.42.179.200 as permitted sender) smtp.mailfrom=kernel-hardening-return-12877-gregkh=linuxfoundation.org@lists.openwall.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=B8gND4Up; spf=pass (google.com: domain of kernel-hardening-return-12877-gregkh=linuxfoundation.org@lists.openwall.com designates 195.42.179.200 as permitted sender) smtp.mailfrom=kernel-hardening-return-12877-gregkh=linuxfoundation.org@lists.openwall.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm List-Post: List-Help: List-Unsubscribe: List-Subscribe: From: Salvatore Mesoraca To: linux-kernel@vger.kernel.org Cc: kernel-hardening@lists.openwall.com, linux-crypto@vger.kernel.org, "David S. Miller" , Herbert Xu , Kees Cook , Salvatore Mesoraca , Eric Biggers , Laura Abbott Subject: [PATCH 1/6] crypto: api - laying macros for statically allocated buffers Date: Sat, 7 Apr 2018 20:38:18 +0200 Message-Id: <1523126303-23205-2-git-send-email-s.mesoraca16@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1523126303-23205-1-git-send-email-s.mesoraca16@gmail.com> References: <1523126303-23205-1-git-send-email-s.mesoraca16@gmail.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1597113752919288094?= X-GMAIL-MSGID: =?utf-8?q?1597113752919288094?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Creating 2 new compile-time constants for internal use, in preparation for the removal of VLAs[1] from crypto code. All ciphers implemented in Linux have a block size less than or equal to 16 bytes and the most demanding hw require 16 bytes alignment for the block buffer. [1] http://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com Signed-off-by: Salvatore Mesoraca --- crypto/internal.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/crypto/internal.h b/crypto/internal.h index 9a3f399..89ae41e 100644 --- a/crypto/internal.h +++ b/crypto/internal.h @@ -26,6 +26,14 @@ #include #include +/* + * Maximum values for blocksize and alignmask, used to allocate + * static buffers that are big enough for any combination of + * ciphers and architectures. + */ +#define MAX_BLOCKSIZE 16 +#define MAX_ALIGNMASK 15 + /* Crypto notification events. */ enum { CRYPTO_MSG_ALG_REQUEST, -- 1.9.1