Date: Mon, 12 Aug 2019 02:42:48 +0000 (UTC) From: Cy Schubert <cy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r350882 - head/sys/contrib/ipfilter/netinet Message-ID: <201908120242.x7C2gmpg081122@repo.freebsd.org>
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Author: cy Date: Mon Aug 12 02:42:47 2019 New Revision: 350882 URL: https://svnweb.freebsd.org/changeset/base/350882 Log: Initialize the frentry (the control block that defines a rule) checksum to zero. Matching checksums save time and effort by mitigating the need for full rule compare. MFC after: 3 days Modified: head/sys/contrib/ipfilter/netinet/fil.c Modified: head/sys/contrib/ipfilter/netinet/fil.c ============================================================================== --- head/sys/contrib/ipfilter/netinet/fil.c Sun Aug 11 23:54:52 2019 (r350881) +++ head/sys/contrib/ipfilter/netinet/fil.c Mon Aug 12 02:42:47 2019 (r350882) @@ -4973,7 +4973,7 @@ frrequest(softc, unit, req, data, set, makecopy) * (this meaning no pointers are included). */ pp = (u_int *)(fp->fr_caddr + fp->fr_dsize); - for (p = (u_int *)fp->fr_data; p < pp; p++) + for (fp->fr_cksum = 0, p = (u_int *)fp->fr_data; p < pp; p++) fp->fr_cksum += *p; WRITE_ENTER(&softc->ipf_mutex);
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