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The essence of this patch is to stuff (almost) all global variables of the slirp stack into the structure Slirp. In this step, we still keep the structure as global variable, directly accessible by the whole stack. Changes to the external interface of slirp will be applied in the following patches. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
87 lines
3.2 KiB
C
87 lines
3.2 KiB
C
/*
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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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* 3. Neither the name of the University nor the names of its contributors
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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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u_int16_t uh_sport; /* source port */
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u_int16_t uh_dport; /* destination port */
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int16_t uh_ulen; /* udp length */
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u_int16_t uh_sum; /* udp checksum */
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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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#define ui_mbuf ui_i.ih_mbuf.mptr
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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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struct mbuf;
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void udp_init _P((Slirp *));
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void udp_input _P((register struct mbuf *, int));
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int udp_output _P((struct socket *, struct mbuf *, struct sockaddr_in *));
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int udp_attach _P((struct socket *));
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void udp_detach _P((struct socket *));
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struct socket * udp_listen _P((Slirp *, u_int32_t, u_int, u_int32_t, u_int,
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int));
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int udp_output2(struct socket *so, struct mbuf *m,
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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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