Date: Mon, 27 Feb 2006 18:47:50 GMT From: Onno Molenkamp <onno@flox.org> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/93909: STP doesn't transmit its own bridge id Message-ID: <200602271847.k1RIlotu013341@www.freebsd.org> Resent-Message-ID: <200602271850.k1RIo6NK088711@freefall.freebsd.org>
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>Number: 93909 >Category: kern >Synopsis: STP doesn't transmit its own bridge id >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Feb 27 18:50:06 GMT 2006 >Closed-Date: >Last-Modified: >Originator: Onno Molenkamp >Release: 6.0-STABLE >Organization: >Environment: FreeBSD duiveltje 6.0-STABLE FreeBSD 6.0-STABLE #0: Mon Jan 16 13:54:19 CET 2006 root@duiveltje:/usr/obj/usr/src/sys/DUIVELTJE i386 >Description: The code in net/bridgestp.c that builds up a packet to be transmitted over the network incorrectly puts the root id in the bridge id field. I noticed this behaviour in 6.0-STABLE version from a while ago, but the bug still exists in current CVS. >How-To-Repeat: Use an if_bridge bridge with STP. >Fix: --- net/bridgestp.c Tue Jan 10 00:53:40 2006 +++ net/bridgestp.c.new Mon Feb 27 19:42:24 2006 @@ -269,13 +269,13 @@ bpdu.cbu_rootpathcost = htonl(cu->cu_root_path_cost); - bpdu.cbu_bridgepri = htons(cu->cu_rootid >> 48); - bpdu.cbu_bridgeaddr[0] = cu->cu_rootid >> 40; - bpdu.cbu_bridgeaddr[1] = cu->cu_rootid >> 32; - bpdu.cbu_bridgeaddr[2] = cu->cu_rootid >> 24; - bpdu.cbu_bridgeaddr[3] = cu->cu_rootid >> 16; - bpdu.cbu_bridgeaddr[4] = cu->cu_rootid >> 8; - bpdu.cbu_bridgeaddr[5] = cu->cu_rootid >> 0; + bpdu.cbu_bridgepri = htons(cu->cu_bridge_id >> 48); + bpdu.cbu_bridgeaddr[0] = cu->cu_bridge_id >> 40; + bpdu.cbu_bridgeaddr[1] = cu->cu_bridge_id >> 32; + bpdu.cbu_bridgeaddr[2] = cu->cu_bridge_id >> 24; + bpdu.cbu_bridgeaddr[3] = cu->cu_bridge_id >> 16; + bpdu.cbu_bridgeaddr[4] = cu->cu_bridge_id >> 8; + bpdu.cbu_bridgeaddr[5] = cu->cu_bridge_id >> 0; bpdu.cbu_portid = htons(cu->cu_port_id); bpdu.cbu_messageage = htons(cu->cu_message_age); >Release-Note: >Audit-Trail: >Unformatted:
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