From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ken-ichirou MATSUZAWA Subject: [libnetfilter_conntrack PATCH] conntrack: introduce clear and equal functions for bitmask object Date: Sat, 8 Mar 2014 10:24:18 +0900 Message-ID: <20140308012416.GJ4415@gmail.com> References: <20140308010344.GA4415@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: The netfilter developer mailinglist Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:48490 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753116AbaCHBYk (ORCPT ); Fri, 7 Mar 2014 20:24:40 -0500 Received: by mail-pb0-f46.google.com with SMTP id rq2so4864899pbb.19 for ; Fri, 07 Mar 2014 17:24:40 -0800 (PST) Received: from gmail.com (KD106159154146.ppp-bb.dion.ne.jp. [106.159.154.146]) by mx.google.com with ESMTPSA id sx8sm17279806pab.5.2014.03.07.17.24.36 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Fri, 07 Mar 2014 17:24:38 -0800 (PST) Content-Disposition: inline In-Reply-To: <20140308010344.GA4415@gmail.com> Sender: netfilter-devel-owner@vger.kernel.org List-ID: This patch adds two functions, useful for ulogd IPFIX output module. --- .../libnetfilter_conntrack.h | 2 ++ src/conntrack/api.c | 31 ++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/include/libnetfilter_conntrack/libnetfilter_conntrack.h b/include/libnetfilter_conntrack/libnetfilter_conntrack.h index d4542ba..a5e6a91 100644 --- a/include/libnetfilter_conntrack/libnetfilter_conntrack.h +++ b/include/libnetfilter_conntrack/libnetfilter_conntrack.h @@ -286,6 +286,8 @@ void nfct_bitmask_set_bit(struct nfct_bitmask *, unsigned int bit); int nfct_bitmask_test_bit(const struct nfct_bitmask *, unsigned int bit); void nfct_bitmask_unset_bit(struct nfct_bitmask *, unsigned int bit); void nfct_bitmask_destroy(struct nfct_bitmask *); +void nfct_bitmask_clear(struct nfct_bitmask *); +int nfct_bitmask_equal(const struct nfct_bitmask *, const struct nfct_bitmask *); /* connlabel name <-> bit translation mapping */ struct nfct_labelmap; diff --git a/src/conntrack/api.c b/src/conntrack/api.c index 224be86..fc4c58f 100644 --- a/src/conntrack/api.c +++ b/src/conntrack/api.c @@ -1704,6 +1704,37 @@ void nfct_bitmask_destroy(struct nfct_bitmask *b) free(b); } +/* + * nfct_bitmask_clear - clear a bitmask object + * + * \param b pointer to the bitmask object to clear + */ +void nfct_bitmask_clear(struct nfct_bitmask *b) +{ + unsigned int bytes = b->words * sizeof(b->bits[0]); + memset(b->bits, 0, bytes); +} + +/* + * nfct_bitmask_equal - compare two bitmask objects + * + * \param b1 pointer to a valid bitmask object + * \param b2 pointer to a valid bitmask object + * + * If both bitmask object are equal, this function returns 1, otherwise + * -1 or 0 is returned. + */ +int nfct_bitmask_equal(const struct nfct_bitmask *b1, const struct nfct_bitmask *b2) +{ + if (b1->words != b2->words) + return -1; + + if (!memcmp(b1->bits, b2->bits, b1->words * sizeof(b1->bits[0]))) + return 1; + else + return 0; +} + /** * @} */ -- 1.8.5.3