Date: Mon, 29 Jun 1998 15:02:53 -0300 (EST) From: Joao Carlos Mendes Luis <jonny@jonny.eng.br> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/7115: bug in kernel vif byte count Message-ID: <199806291802.PAA12811@roma.coe.ufrj.br>
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>Number: 7115
>Category: kern
>Synopsis: vif statistics show wrong byte count
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Jun 29 11:10:00 PDT 1998
>Last-Modified:
>Originator: Joao Carlos Mendes Luis
>Organization:
COPPE/UFRJ
>Release: FreeBSD 2.2.6-STABLE i386
>Environment:
Any multicast routing machine. My environment is 2.2-stable,
but the bug seems to exist both in 2.1 and 3.0-current.
>Description:
Byte count statistics of multicast vifs are invalid.
The problem is caused by a wrong endianess in the sum.
>How-To-Repeat:
>Fix:
Apply this patch:
--- /sys/netinet/ip_mroute.c Sat Jul 19 17:09:09 1997
+++ ip_mroute.c.new Mon Jun 29 14:23:17 1998
@@ -1394,7 +1394,7 @@
register struct ip *ip = mtod(m, struct ip *);
register vifi_t vifi;
register struct vif *vifp;
- register int plen = ntohs(ip->ip_len);
+ register int plen = ip->ip_len;
/*
* Macro to send packet on vif. Since RSVP packets don't get counted on
>Audit-Trail:
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