From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pablo Neira Ayuso Subject: [PATCH nft 02/12] evaluate: transfer right shifts to range side Date: Wed, 11 May 2016 23:05:06 +0200 Message-ID: <1463000716-11885-2-git-send-email-pablo@netfilter.org> References: <1463000716-11885-1-git-send-email-pablo@netfilter.org> To: netfilter-devel@vger.kernel.org Return-path: Received: from mail.us.es ([193.147.175.20]:40449 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751632AbcEKVF1 (ORCPT ); Wed, 11 May 2016 17:05:27 -0400 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id CCCB51BD5B4 for ; Wed, 11 May 2016 23:05:24 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id B9FDDFF6F8 for ; Wed, 11 May 2016 23:05:24 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 3EA2CFAB57 for ; Wed, 11 May 2016 23:05:22 +0200 (CEST) In-Reply-To: <1463000716-11885-1-git-send-email-pablo@netfilter.org> Sender: netfilter-devel-owner@vger.kernel.org List-ID: This provides a generic way to transfer shifts from the left hand side to the right hand range side of a relational expression when performing transformations from the evaluation step. Signed-off-by: Pablo Neira Ayuso --- src/evaluate.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/src/evaluate.c b/src/evaluate.c index f862cd0..60bbce1 100644 --- a/src/evaluate.c +++ b/src/evaluate.c @@ -1146,6 +1146,18 @@ static int binop_transfer(struct eval_ctx *ctx, struct expr **expr) if (binop_transfer_one(ctx, left, &(*expr)->right) < 0) return -1; break; + case EXPR_RANGE: + err = binop_can_transfer(ctx, left, (*expr)->right->left); + if (err <= 0) + return err; + err = binop_can_transfer(ctx, left, (*expr)->right->right); + if (err <= 0) + return err; + if (binop_transfer_one(ctx, left, &(*expr)->right->left) < 0) + return -1; + if (binop_transfer_one(ctx, left, &(*expr)->right->right) < 0) + return -1; + break; case EXPR_SET: list_for_each_entry(i, &(*expr)->right->expressions, list) { err = binop_can_transfer(ctx, left, i); -- 2.1.4