File:  [Qemu by Fabrice Bellard] / qemu / slirp / udp.h
Revision 1.1.1.3 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:54:30 2018 UTC (3 years, 1 month ago) by root
Branches: qemu, MAIN
CVS tags: qemu0105, qemu0104, qemu0103, qemu0102, qemu0101, qemu0100, HEAD
qemu 0.10.0

    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. Neither the name of the University nor the names of its contributors
   14:  *    may be used to endorse or promote products derived from this software
   15:  *    without specific prior written permission.
   16:  *
   17:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27:  * SUCH DAMAGE.
   28:  *
   29:  *	@(#)udp.h	8.1 (Berkeley) 6/10/93
   30:  * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
   31:  */
   32: 
   33: #ifndef _UDP_H_
   34: #define _UDP_H_
   35: 
   36: #define UDP_TTL 0x60
   37: #define UDP_UDPDATALEN 16192
   38: 
   39: extern struct socket *udp_last_so;
   40: 
   41: /*
   42:  * Udp protocol header.
   43:  * Per RFC 768, September, 1981.
   44:  */
   45: struct udphdr {
   46: 	u_int16_t	uh_sport;		/* source port */
   47: 	u_int16_t	uh_dport;		/* destination port */
   48: 	int16_t	uh_ulen;		/* udp length */
   49: 	u_int16_t	uh_sum;			/* udp checksum */
   50: };
   51: 
   52: /*
   53:  * UDP kernel structures and variables.
   54:  */
   55: struct udpiphdr {
   56: 	        struct  ipovly ui_i;            /* overlaid ip structure */
   57: 	        struct  udphdr ui_u;            /* udp header */
   58: };
   59: #define ui_mbuf         ui_i.ih_mbuf.mptr
   60: #define ui_x1           ui_i.ih_x1
   61: #define ui_pr           ui_i.ih_pr
   62: #define ui_len          ui_i.ih_len
   63: #define ui_src          ui_i.ih_src
   64: #define ui_dst          ui_i.ih_dst
   65: #define ui_sport        ui_u.uh_sport
   66: #define ui_dport        ui_u.uh_dport
   67: #define ui_ulen         ui_u.uh_ulen
   68: #define ui_sum          ui_u.uh_sum
   69: 
   70: #ifdef LOG_ENABLED
   71: struct udpstat {
   72: 	                                /* input statistics: */
   73: 	        u_long  udps_ipackets;          /* total input packets */
   74: 	        u_long  udps_hdrops;            /* packet shorter than header */
   75: 	        u_long  udps_badsum;            /* checksum error */
   76: 	        u_long  udps_badlen;            /* data length larger than packet */
   77: 	        u_long  udps_noport;            /* no socket on port */
   78: 	        u_long  udps_noportbcast;       /* of above, arrived as broadcast */
   79: 	        u_long  udps_fullsock;          /* not delivered, input socket full */
   80: 	        u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
   81: 	                                /* output statistics: */
   82: 	        u_long  udps_opackets;          /* total output packets */
   83: };
   84: #endif
   85: 
   86: /*
   87:  * Names for UDP sysctl objects
   88:  */
   89: #define UDPCTL_CHECKSUM         1       /* checksum UDP packets */
   90: #define UDPCTL_MAXID            2
   91: 
   92: #ifdef LOG_ENABLED
   93: extern struct udpstat udpstat;
   94: #endif
   95: 
   96: extern struct socket udb;
   97: struct mbuf;
   98: 
   99: void udp_init _P((void));
  100: void udp_input _P((register struct mbuf *, int));
  101: int udp_output _P((struct socket *, struct mbuf *, struct sockaddr_in *));
  102: int udp_attach _P((struct socket *));
  103: void udp_detach _P((struct socket *));
  104: struct socket * udp_listen _P((u_int, u_int32_t, u_int, int));
  105: int udp_output2(struct socket *so, struct mbuf *m,
  106:                 struct sockaddr_in *saddr, struct sockaddr_in *daddr,
  107:                 int iptos);
  108: #endif

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