2004-04-22 08:10:48 +08:00
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/*
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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Remove the advertising clause from the slirp license
According to the FSF, the 4-clause BSD license, which slirp is covered under,
is not compatible with the GPL or LGPL[1].
[1] http://www.fsf.org/licensing/licenses/index_html#GPLIncompatibleLicenses
There are three declared copyright holders in slirp that use the 4-clause
BSD license, the Regents of UC Berkley, Danny Gasparovski, and Kelly Price.
Below are the appropriate permissions to remove the advertise clause from slirp
from each party.
Special thanks go to Richard Fontana from Red Hat for contacting all of the
necessary authors to resolve this issue!
Regents of UC Berkley:
From ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
July 22, 1999
To All Licensees, Distributors of Any Version of BSD:
As you know, certain of the Berkeley Software Distribution ("BSD") source
code files require that further distributions of products containing all or
portions of the software, acknowledge within their advertising materials
that such products contain software developed by UC Berkeley and its
contributors.
Specifically, the provision reads:
" * 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors."
Effective immediately, licensees and distributors are no longer required to
include the acknowledgement within advertising materials. Accordingly, the
foregoing paragraph of those BSD Unix files containing it is hereby deleted
in its entirety.
William Hoskins
Director, Office of Technology Licensing
University of California, Berkeley
Danny Gasparovski:
Subject: RE: Slirp license
Date: Thu, 8 Jan 2009 10:51:00 +1100
From: "Gasparovski, Daniel" <Daniel.Gasparovski@ato.gov.au>
To: "Richard Fontana" <rfontana@redhat.com>
Hi Richard,
I have no objection to having Slirp code in QEMU be licensed under the
3-clause BSD license.
Thanks for taking the effort to consult me about this.
Dan ...
Kelly Price:
Date: Thu, 8 Jan 2009 19:38:56 -0500
From: "Kelly Price" <strredwolf@gmail.com>
To: "Richard Fontana" <rfontana@redhat.com>
Subject: Re: Slirp license
Thanks for contacting me, Richard. I'm glad you were able to find
Dan, as I've been "keeping the light on" for Slirp. I have no use for
it now, and I have little time for it (now holding onto Keenspot's
Comic Genesis and having a regular US state government position). If
Dan would like to return to the project, I'd love to give it back to
him.
As for copyright, I don't own all of it. Dan does, so I will defer to
him. Any of my patches I will gladly license to the 3-part BSD
license. My interest in re-licensing was because we didn't have ready
info to contact Dan. If Dan would like to port Slirp back out of
QEMU, a lot of us 64-bit users would be grateful.
Feel free to share this email address with Dan. I will be glad to
effect a transfer of the project to him and Mr. Bellard of the QEMU
project.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6451 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-27 03:37:41 +08:00
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* 3. Neither the name of the University nor the names of its contributors
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2004-04-22 08:10:48 +08:00
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)udp.h 8.1 (Berkeley) 6/10/93
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* udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
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*/
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#ifndef _UDP_H_
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#define _UDP_H_
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#define UDP_TTL 0x60
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#define UDP_UDPDATALEN 16192
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/*
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* Udp protocol header.
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* Per RFC 768, September, 1981.
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*/
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struct udphdr {
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2010-07-23 04:15:23 +08:00
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uint16_t uh_sport; /* source port */
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uint16_t uh_dport; /* destination port */
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int16_t uh_ulen; /* udp length */
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uint16_t uh_sum; /* udp checksum */
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2004-04-22 08:10:48 +08:00
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};
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/*
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* UDP kernel structures and variables.
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*/
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struct udpiphdr {
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struct ipovly ui_i; /* overlaid ip structure */
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struct udphdr ui_u; /* udp header */
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};
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2009-01-14 03:48:42 +08:00
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#define ui_mbuf ui_i.ih_mbuf.mptr
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2004-04-22 08:10:48 +08:00
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#define ui_x1 ui_i.ih_x1
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#define ui_pr ui_i.ih_pr
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#define ui_len ui_i.ih_len
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#define ui_src ui_i.ih_src
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#define ui_dst ui_i.ih_dst
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#define ui_sport ui_u.uh_sport
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#define ui_dport ui_u.uh_dport
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#define ui_ulen ui_u.uh_ulen
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#define ui_sum ui_u.uh_sum
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/*
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* Names for UDP sysctl objects
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*/
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#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
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#define UDPCTL_MAXID 2
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2005-06-06 01:11:42 +08:00
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struct mbuf;
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2004-04-22 08:10:48 +08:00
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2009-07-02 03:11:17 +08:00
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void udp_init(Slirp *);
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2012-03-01 02:14:23 +08:00
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void udp_cleanup(Slirp *);
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2009-07-02 03:11:17 +08:00
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void udp_input(register struct mbuf *, int);
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int udp_attach(struct socket *);
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void udp_detach(struct socket *);
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2010-07-23 04:15:23 +08:00
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struct socket * udp_listen(Slirp *, uint32_t, u_int, uint32_t, u_int,
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2009-07-02 03:11:17 +08:00
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int);
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slirp: Factorizing address translation
This patch factorizes some duplicate code into a new function,
sotranslate_out(). This function perform the address translation when a
packet is transmitted to the host network. If the packet is destinated
to the host, the loopback address is used, and if the packet is
destinated to the virtual DNS, the real DNS address is used. This code
is just a copy of the existent, but factorized and ready to manage the
IPv6 case.
On the same model, the major part of udp_output() code is moved into a
new sotranslate_in(). This function is directly used in sorecvfrom(),
like sotranslate_out() in sosendto().
udp_output() becoming useless, it is removed and udp_output2() is
renamed into udp_output(). This adds consistency with the udp6_output()
function introduced by further patches.
Lastly, this factorizes some duplicate code into sotranslate_accept(), which
performs the address translation when a connection is established on the host
for port forwarding: if it comes from localhost, the host virtual address is
used instead.
This prepares for IPv6 support.
Signed-off-by: Guillaume Subiron <maethor@subiron.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-12-20 05:24:59 +08:00
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int udp_output(struct socket *so, struct mbuf *m,
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2004-04-22 08:10:48 +08:00
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struct sockaddr_in *saddr, struct sockaddr_in *daddr,
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int iptos);
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#endif
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