From owner-cvs-all Fri Jun 16 13:14:47 2000 Delivered-To: cvs-all@freebsd.org Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.21]) by hub.freebsd.org (Postfix) with ESMTP id 71E4237B580; Fri, 16 Jun 2000 13:14:44 -0700 (PDT) (envelope-from wpaul@FreeBSD.org) Received: (from wpaul@localhost) by freefall.freebsd.org (8.9.3/8.9.2) id NAA12344; Fri, 16 Jun 2000 13:14:44 -0700 (PDT) (envelope-from wpaul@FreeBSD.org) Message-Id: <200006162014.NAA12344@freefall.freebsd.org> From: Bill Paul Date: Fri, 16 Jun 2000 13:14:43 -0700 (PDT) To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sys sockio.h src/sys/net if.c src/sbin/ifconfig ifconfig.8 ifconfig.c Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG wpaul 2000/06/16 13:14:43 PDT Modified files: sys/sys sockio.h sys/net if.c sbin/ifconfig ifconfig.8 ifconfig.c Log: Implement SIOCSIFLLADDR, which allows you to change the link-level address on an interface. This basically allows you to do what my little setmac module/utility does via ifconfig. This involves the following changes: socket.h: define SIOCSIFLLADDR if.c: add support for SIOCSIFLLADDR, which resets the values in the arpcom struct and sockaddr_dl for the specified interface. Note that if the interface is already up, we need to down/up it in order to program the underlying hardware's receive filter. ifconfig.c: add lladdr command ifconfig.8: document lladdr command You can now force the MAC address on any ethernet interface to be whatever you want. (The change is not sticky across reboots of course: we don't actually reprogram the EEPROM or anything.) Actually, you can reprogram the MAC address on other kinds of interfaces too; this shouldn't be ethernet-specific (though at the moment it's limited to 6 bytes of address data). Nobody ran up to me and said "this is the politically correct way to do this!" so I don't want to hear any complaints from people who think I could have done it more elegantly. Consider yourselves lucky I didn't do it by having ifconfig tread all over /dev/kmem. Revision Changes Path 1.15 +2 -1 src/sys/sys/sockio.h 1.87 +31 -1 src/sys/net/if.c 1.29 +11 -1 src/sbin/ifconfig/ifconfig.8 1.52 +27 -2 src/sbin/ifconfig/ifconfig.c To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message