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, 5 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]
#	Content
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	#ifdef PRAGMA_PACK_SUPPORTED
50	#pragma pack(1)
51	#endif
52
53	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	} PACKED__;
59
60	#ifdef PRAGMA_PACK_SUPPORTED
61	#pragma pack(0)
62	#endif
63
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	struct mbuf;
106
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