From owner-freebsd-net  Tue Jan  8 13:40:39 2002
Delivered-To: freebsd-net@freebsd.org
Received: from web12307.mail.yahoo.com (web12307.mail.yahoo.com [216.136.173.105])
	by hub.freebsd.org (Postfix) with SMTP id CB9AB37B41C
	for <freebsd-net@FreeBSD.ORG>; Tue,  8 Jan 2002 13:40:35 -0800 (PST)
Message-ID: <20020108214035.35901.qmail@web12307.mail.yahoo.com>
Received: from [12.233.185.205] by web12307.mail.yahoo.com via HTTP; Tue, 08 Jan 2002 13:40:35 PST
Date: Tue, 8 Jan 2002 13:40:35 -0800 (PST)
From: Anand Narayanan <anandn_98@yahoo.com>
Reply-To: anandn_98@yahoo.com
Subject: Bug in in_pcbbind() with respect to SO_REUSEADDR/SO_REUSEPORT
To: freebsd-net@FreeBSD.ORG
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
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,

This is an issue from in_pcb.c v 1.59.2.5 2000/08/16 06:14:23

I just encountered a problem in trying to bind a server address using the
SO_REUSEPORT and SO_REUSEADDR option after the first one has been shutdown.

Looking into in_pcbbind, I see that if SO_REUSEADDR or SO_REUSEPORT is set,
then the variable "wild" is 0.

if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
                wild = 1;

However, when calling in_pcblookup_local (in the non-multicast case), it seems
to ignore the value of wild.

if (lport) {
    ...
    ...
    if (so->so_cred->cr_uid != 0 &&
                            !IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
                                t = in_pcblookup_local(inp->inp_pcbinfo,
                                    sin->sin_addr, lport,
                                    prison ? 0 :  INPLOOKUP_WILDCARD);

Shouldn't the last argument to in_pcblookup_local be "wild" instead of
INPLOOKUP_WILDCARD?

By passing INPLOOKUP_WILDCARD, in_pcblookup_local always ignores the SO_REUSE*
options and bind fails.

Is this a bug or am I missing something? Any help would be appreciated.

-Anand

=====


__________________________________________________
Do You Yahoo!?
Send FREE video emails in Yahoo! Mail!
http://promo.yahoo.com/videomail/

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