From owner-svn-src-head@freebsd.org Mon Jan 28 20:30:05 2019 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 95EE514BE8CB; Mon, 28 Jan 2019 20:30:05 +0000 (UTC) (envelope-from pkelsey@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 3A3DC76989; Mon, 28 Jan 2019 20:30:05 +0000 (UTC) (envelope-from pkelsey@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 mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 2B03424CD3; Mon, 28 Jan 2019 20:30:05 +0000 (UTC) (envelope-from pkelsey@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x0SKU5Lj012303; Mon, 28 Jan 2019 20:30:05 GMT (envelope-from pkelsey@FreeBSD.org) Received: (from pkelsey@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x0SKU56I012302; Mon, 28 Jan 2019 20:30:05 GMT (envelope-from pkelsey@FreeBSD.org) Message-Id: <201901282030.x0SKU56I012302@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: pkelsey set sender to pkelsey@FreeBSD.org using -f From: Patrick Kelsey Date: Mon, 28 Jan 2019 20:30:05 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r343535 - head/sbin/ifconfig X-SVN-Group: head X-SVN-Commit-Author: pkelsey X-SVN-Commit-Paths: head/sbin/ifconfig X-SVN-Commit-Revision: 343535 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 3A3DC76989 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_SHORT(-0.95)[-0.955,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 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: Mon, 28 Jan 2019 20:30:05 -0000 Author: pkelsey Date: Mon Jan 28 20:30:04 2019 New Revision: 343535 URL: https://svnweb.freebsd.org/changeset/base/343535 Log: Speed up non-status operations applied to a single interface When performing a non-status operation on a single interface, it is not necessary for ifconfig to build a list of all addresses in the system, sort them, then iterate through them looking for the entry for the single interface of interest. Doing so becomes increasingly expensive as the number of interfaces in the system grows (e.g., in a system with 1000+ vlan(4) interfaces). Reviewed by: ae, kp MFC after: 1 week Sponsored by: RG Nets Differential Revision: https://reviews.freebsd.org/D18919 Modified: head/sbin/ifconfig/ifconfig.c Modified: head/sbin/ifconfig/ifconfig.c ============================================================================== --- head/sbin/ifconfig/ifconfig.c Mon Jan 28 20:26:09 2019 (r343534) +++ head/sbin/ifconfig/ifconfig.c Mon Jan 28 20:30:04 2019 (r343535) @@ -111,6 +111,8 @@ static void status(const struct afswtch *afp, const st static void tunnel_status(int s); static _Noreturn void usage(void); +static int getifflags(const char *ifname, int us); + static struct afswtch *af_getbyname(const char *name); static struct afswtch *af_getbyfamily(int af); static void af_other_status(int); @@ -369,6 +371,7 @@ main(int argc, char *argv[]) const char *ifname; struct option *p; size_t iflen; + int flags; all = downonly = uponly = namesonly = noload = verbose = 0; f_inet = f_inet6 = f_ether = f_addr = NULL; @@ -526,6 +529,25 @@ main(int argc, char *argv[]) argc--, argv++; } + /* + * Check for a requested configuration action on a single interface, + * which doesn't require building, sorting, and searching the entire + * system address list + */ + if ((argc > 0) && (ifname != NULL)) { + iflen = strlcpy(name, ifname, sizeof(name)); + if (iflen >= sizeof(name)) { + warnx("%s: interface name too long, skipping", ifname); + } else { + flags = getifflags(name, -1); + if (!(((flags & IFF_CANTCONFIG) != 0) || + (downonly && (flags & IFF_UP) != 0) || + (uponly && (flags & IFF_UP) == 0))) + ifconfig(argc, argv, 0, afp); + } + goto done; + } + if (getifaddrs(&ifap) != 0) err(EXIT_FAILURE, "getifaddrs"); @@ -609,6 +631,7 @@ main(int argc, char *argv[]) printf("\n"); freeifaddrs(ifap); +done: freeformat(); exit(exit_code); } @@ -1020,6 +1043,28 @@ setifdstaddr(const char *addr, int param __unused, int afp->af_getaddr(addr, DSTADDR); } +static int +getifflags(const char *ifname, int us) +{ + struct ifreq my_ifr; + int s; + + memset(&my_ifr, 0, sizeof(my_ifr)); + (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name)); + if (us < 0) { + if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) + err(1, "socket(family AF_LOCAL,SOCK_DGRAM"); + } else + s = us; + if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { + Perror("ioctl (SIOCGIFFLAGS)"); + exit(1); + } + if (us < 0) + close(s); + return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16)); +} + /* * Note: doing an SIOCIGIFFLAGS scribbles on the union portion * of the ifreq structure, which may confuse other parts of ifconfig. @@ -1031,20 +1076,14 @@ setifflags(const char *vname, int value, int s, const struct ifreq my_ifr; int flags; - memset(&my_ifr, 0, sizeof(my_ifr)); - (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name)); - - if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { - Perror("ioctl (SIOCGIFFLAGS)"); - exit(1); - } - flags = (my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16); - + flags = getifflags(name, s); if (value < 0) { value = -value; flags &= ~value; } else flags |= value; + memset(&my_ifr, 0, sizeof(my_ifr)); + (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name)); my_ifr.ifr_flags = flags & 0xffff; my_ifr.ifr_flagshigh = flags >> 16; if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)