src/slirp/udp.h

/*
 * Copyright (c) 1982, 1986, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 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.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)udp.h       8.1 (Berkeley) 6/10/93
 * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
 */

#ifndef _UDP_H_
#define _UDP_H_

#define UDP_TTL 0x60
#define UDP_UDPDATALEN 16192

extern struct socket *udp_last_so;

/*
 * Udp protocol header.
 * Per RFC 768, September, 1981.
 */
#ifdef PRAGMA_PACK_SUPPORTED
#pragma pack(1)
#endif

struct udphdr {
        u_int16_t       uh_sport;               /* source port */
        u_int16_t       uh_dport;               /* destination port */
        int16_t uh_ulen;                /* udp length */
        u_int16_t       uh_sum;                 /* udp checksum */
} PACKED__;

#ifdef PRAGMA_PACK_SUPPORTED
#pragma pack(0)
#endif

/*
 * UDP kernel structures and variables.
 */
struct udpiphdr {
                struct  ipovly ui_i;            /* overlaid ip structure */
                struct  udphdr ui_u;            /* udp header */
};
#define ui_next         ui_i.ih_next
#define ui_prev         ui_i.ih_prev
#define ui_x1           ui_i.ih_x1
#define ui_pr           ui_i.ih_pr
#define ui_len          ui_i.ih_len
#define ui_src          ui_i.ih_src
#define ui_dst          ui_i.ih_dst
#define ui_sport        ui_u.uh_sport
#define ui_dport        ui_u.uh_dport
#define ui_ulen         ui_u.uh_ulen
#define ui_sum          ui_u.uh_sum

struct udpstat {
                                        /* input statistics: */
                u_long  udps_ipackets;          /* total input packets */
                u_long  udps_hdrops;            /* packet shorter than header */
                u_long  udps_badsum;            /* checksum error */
                u_long  udps_badlen;            /* data length larger than packet */
                u_long  udps_noport;            /* no socket on port */
                u_long  udps_noportbcast;       /* of above, arrived as broadcast */
                u_long  udps_fullsock;          /* not delivered, input socket full */
                u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
                                        /* output statistics: */
                u_long  udps_opackets;          /* total output packets */
};

/*
 * Names for UDP sysctl objects
 */
#define UDPCTL_CHECKSUM         1       /* checksum UDP packets */
#define UDPCTL_MAXID            2

extern struct udpstat udpstat;
extern struct socket udb;
struct mbuf;

void udp_init _P((void));
void udp_input _P((register struct mbuf *, int));
int udp_output _P((struct socket *, struct mbuf *, struct sockaddr_in *));
int udp_attach _P((struct socket *));
void udp_detach _P((struct socket *));
u_int8_t udp_tos _P((struct socket *));
void udp_emu _P((struct socket *, struct mbuf *));
struct socket * udp_listen _P((u_int, u_int32_t, u_int, int));
int udp_output2(struct socket *so, struct mbuf *m, 
                struct sockaddr_in *saddr, struct sockaddr_in *daddr,
                int iptos);
#endif
Revision:	1.3
Committed:	2006-01-17T21:19:12Z (18 years, 10 months ago) by gbeauche
Content type:	text/plain
Branch:	MAIN
CVS Tags:	nigel-build-19
Changes since 1.2:	+9 -1 lines
Log Message:	Packet headers can be examined through unaligned addresses. This patch fixes this, especially for MIPS & SPARC platforms. [Initial patch from Brian J. Johnson]
#	User	Rev	Content
1	gbeauche	1.1	/*
2			* Copyright (c) 1982, 1986, 1993
3			* The Regents of the University of California. All rights reserved.
4			*
5			* Redistribution and use in source and binary forms, with or without
6			* modification, are permitted provided that the following conditions
7			* are met:
8			* 1. Redistributions of source code must retain the above copyright
9			* notice, this list of conditions and the following disclaimer.
10			* 2. Redistributions in binary form must reproduce the above copyright
11			* notice, this list of conditions and the following disclaimer in the
12			* documentation and/or other materials provided with the distribution.
13			* 3. All advertising materials mentioning features or use of this software
14			* must display the following acknowledgement:
15			* This product includes software developed by the University of
16			* California, Berkeley and its contributors.
17			* 4. Neither the name of the University nor the names of its contributors
18			* may be used to endorse or promote products derived from this software
19			* without specific prior written permission.
20			*
21			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31			* SUCH DAMAGE.
32			*
33			* @(#)udp.h 8.1 (Berkeley) 6/10/93
34			* udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
35			*/
36
37			#ifndef _UDP_H_
38			#define _UDP_H_
39
40			#define UDP_TTL 0x60
41			#define UDP_UDPDATALEN 16192
42
43			extern struct socket *udp_last_so;
44
45			/*
46			* Udp protocol header.
47			* Per RFC 768, September, 1981.
48			*/
49	gbeauche	1.3	#ifdef PRAGMA_PACK_SUPPORTED
50			#pragma pack(1)
51			#endif
52
53	gbeauche	1.1	struct udphdr {
54			u_int16_t uh_sport; /* source port */
55			u_int16_t uh_dport; /* destination port */
56			int16_t uh_ulen; /* udp length */
57			u_int16_t uh_sum; /* udp checksum */
58	gbeauche	1.3	} PACKED__;
59
60			#ifdef PRAGMA_PACK_SUPPORTED
61			#pragma pack(0)
62			#endif
63	gbeauche	1.1
64			/*
65			* UDP kernel structures and variables.
66			*/
67			struct udpiphdr {
68			struct ipovly ui_i; /* overlaid ip structure */
69			struct udphdr ui_u; /* udp header */
70			};
71			#define ui_next ui_i.ih_next
72			#define ui_prev ui_i.ih_prev
73			#define ui_x1 ui_i.ih_x1
74			#define ui_pr ui_i.ih_pr
75			#define ui_len ui_i.ih_len
76			#define ui_src ui_i.ih_src
77			#define ui_dst ui_i.ih_dst
78			#define ui_sport ui_u.uh_sport
79			#define ui_dport ui_u.uh_dport
80			#define ui_ulen ui_u.uh_ulen
81			#define ui_sum ui_u.uh_sum
82
83			struct udpstat {
84			/* input statistics: */
85			u_long udps_ipackets; /* total input packets */
86			u_long udps_hdrops; /* packet shorter than header */
87			u_long udps_badsum; /* checksum error */
88			u_long udps_badlen; /* data length larger than packet */
89			u_long udps_noport; /* no socket on port */
90			u_long udps_noportbcast; /* of above, arrived as broadcast */
91			u_long udps_fullsock; /* not delivered, input socket full */
92			u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
93			/* output statistics: */
94			u_long udps_opackets; /* total output packets */
95			};
96
97			/*
98			* Names for UDP sysctl objects
99			*/
100			#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
101			#define UDPCTL_MAXID 2
102
103			extern struct udpstat udpstat;
104			extern struct socket udb;
105	gbeauche	1.2	struct mbuf;
106	gbeauche	1.1
107			void udp_init _P((void));
108			void udp_input _P((register struct mbuf *, int));
109			int udp_output _P((struct socket , struct mbuf , struct sockaddr_in *));
110			int udp_attach _P((struct socket *));
111			void udp_detach _P((struct socket *));
112			u_int8_t udp_tos _P((struct socket *));
113			void udp_emu _P((struct socket , struct mbuf ));
114			struct socket * udp_listen _P((u_int, u_int32_t, u_int, int));
115			int udp_output2(struct socket so, struct mbuf m,
116			struct sockaddr_in saddr, struct sockaddr_in daddr,
117			int iptos);
118			#endif