From owner-svn-src-head@freebsd.org Sat Jan 7 23:42:18 2017 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id B80F3CA40AD; Sat, 7 Jan 2017 23:42:18 +0000 (UTC) (envelope-from bapt@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 705F318CF; Sat, 7 Jan 2017 23:42:18 +0000 (UTC) (envelope-from bapt@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v07NgHKE059835; Sat, 7 Jan 2017 23:42:17 GMT (envelope-from bapt@FreeBSD.org) Received: (from bapt@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v07NgHrk059834; Sat, 7 Jan 2017 23:42:17 GMT (envelope-from bapt@FreeBSD.org) Message-Id: <201701072342.v07NgHrk059834@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: bapt set sender to bapt@FreeBSD.org using -f From: Baptiste Daroussin Date: Sat, 7 Jan 2017 23:42:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r311659 - head/lib/libstand X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Jan 2017 23:42:18 -0000 Author: bapt Date: Sat Jan 7 23:42:17 2017 New Revision: 311659 URL: https://svnweb.freebsd.org/changeset/base/311659 Log: remove network mask calculation for Classful network Nowadays it's not necessary to compute network mask from the IP address and compare to given by DHCP. Submitted by: kczekirda Reviewed by: glebius, bapt MFC after: 3 weeks Differential Revision: https://reviews.freebsd.org/D8740 Modified: head/lib/libstand/bootp.c Modified: head/lib/libstand/bootp.c ============================================================================== --- head/lib/libstand/bootp.c Sat Jan 7 22:55:23 2017 (r311658) +++ head/lib/libstand/bootp.c Sat Jan 7 23:42:17 2017 (r311659) @@ -62,8 +62,6 @@ __FBSDID("$FreeBSD$"); struct in_addr servip; -static n_long nmask, smask; - static time_t bot; static char vm_rfc1048[4] = VM_RFC1048; @@ -223,30 +221,19 @@ bootp(sock, flag) bcopy(rbuf.rbootp.bp_file, bootfile, sizeof(bootfile)); bootfile[sizeof(bootfile) - 1] = '\0'; - if (IN_CLASSA(ntohl(myip.s_addr))) - nmask = htonl(IN_CLASSA_NET); - else if (IN_CLASSB(ntohl(myip.s_addr))) - nmask = htonl(IN_CLASSB_NET); - else - nmask = htonl(IN_CLASSC_NET); -#ifdef BOOTP_DEBUG - if (debug) - printf("'native netmask' is %s\n", intoa(nmask)); -#endif - - /* Check subnet mask against net mask; toss if bogus */ - if ((nmask & smask) != nmask) { + if (!netmask) { + if (IN_CLASSA(ntohl(myip.s_addr))) + netmask = htonl(IN_CLASSA_NET); + else if (IN_CLASSB(ntohl(myip.s_addr))) + netmask = htonl(IN_CLASSB_NET); + else + netmask = htonl(IN_CLASSC_NET); #ifdef BOOTP_DEBUG if (debug) - printf("subnet mask (%s) bad\n", intoa(smask)); + printf("'native netmask' is %s\n", intoa(netmask)); #endif - smask = 0; } - /* Get subnet (or natural net) mask */ - netmask = nmask; - if (smask) - netmask = smask; #ifdef BOOTP_DEBUG if (debug) printf("mask: %s\n", intoa(netmask)); @@ -385,7 +372,7 @@ vend_rfc1048(cp, len) break; if (tag == TAG_SUBNET_MASK) { - bcopy(cp, &smask, sizeof(smask)); + bcopy(cp, &netmask, sizeof(netmask)); } if (tag == TAG_GATEWAY) { bcopy(cp, &gateip.s_addr, sizeof(gateip.s_addr)); @@ -445,7 +432,7 @@ vend_cmu(cp) vp = (struct cmu_vend *)cp; if (vp->v_smask.s_addr != 0) { - smask = vp->v_smask.s_addr; + netmask = vp->v_smask.s_addr; } if (vp->v_dgate.s_addr != 0) { gateip = vp->v_dgate;