From owner-freebsd-net  Sun Aug 25 13: 7:11 2002
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id C888337B400
	for <freebsd-net@FreeBSD.ORG>; Sun, 25 Aug 2002 13:07:09 -0700 (PDT)
Received: from hotmail.com (f58.law9.hotmail.com [64.4.9.58])
	by mx1.FreeBSD.org (Postfix) with ESMTP id A5BFA43E72
	for <freebsd-net@FreeBSD.ORG>; Sun, 25 Aug 2002 13:07:08 -0700 (PDT)
	(envelope-from soheil_h_y@hotmail.com)
Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC;
	 Sun, 25 Aug 2002 13:07:05 -0700
Received: from 62.60.130.15 by lw9fd.law9.hotmail.msn.com with HTTP;
	Sun, 25 Aug 2002 20:07:05 GMT
X-Originating-IP: [62.60.130.15]
From: "soheil h" <soheil_h_y@hotmail.com>
To: freebsd-net@FreeBSD.ORG
Subject: creating packets but cannot send
Date: Mon, 26 Aug 2002 00:37:05 +0430
Mime-Version: 1.0
Content-Type: text/plain; format=flowed
Message-ID: <F583mbfJ8VrRQvXlaoY00000d4a@hotmail.com>
X-OriginalArrivalTime: 25 Aug 2002 20:07:05.0383 (UTC) FILETIME=[FBC5EB70:01C24C72]
Sender: owner-freebsd-net@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-net.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-net>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-net>
X-Loop: FreeBSD.org


Hi list

in ip_input.c::ip_input() i make
mbuf * m1;
MGETHDR(m1, M_DONTWAIT, MT_HEADER);
if(m1 != NULL){
   soheilFillInIp(m1, m);
   m->m_data += max_linkhdr;
   m->m_len = hdrlen;
   ip_forward(m1, 0);
}

at line 1615 of ip_forward() function it takes page fault error in kernel it 
says the page is not present

if (m->m_flags & (M_BCAST|M_MCAST) || in_canforward(pkt_dst) == 0) {

the soheilFillInIp creates an ipPacket from incoming ip packet
as  and it passes with no error on:
....
ip1 = mtod (m, struct ip *);
ip2 = mtod (m1, struct ip *);
ip2->ip_vhl = IP_VHL_BORING;
ip2->ip_dst = ip1->ip_src; // and vice versa
or
ip2->ip_sum = in_cksum_hdr(m1, sizeof(struct tcpiphdr));
....
when i do something to pass that line of ip_forward
in ip_output when it calls the in_delayed_cksum
it takes the same error

how can i solve this
i think something is in the m1 header or data that i didn't set it or ...
help me SOS

_________________________________________________________________
Join the world’s largest e-mail service with MSN Hotmail. 
http://www.hotmail.com


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-net" in the body of the message