UDP_VAR.H
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上传日期:2013-03-31
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- /*
- * Copyright (c) 1982, 1986, 1989, 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_var.h 8.1 (Berkeley) 6/10/93
- */
- /*
- * 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
- #define UDPCTL_NAMES {
- { 0, 0 },
- { "checksum", CTLTYPE_INT },
- }
- #ifdef KERNEL
- struct inpcb udb;
- struct udpstat udpstat;
- void udp_ctlinput __P((int, struct sockaddr *, struct ip *));
- void udp_init __P((void));
- void udp_input __P((struct mbuf *, int));
- int udp_output __P((struct inpcb *,
- struct mbuf *, struct mbuf *, struct mbuf *));
- int udp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
- int udp_usrreq __P((struct socket *,
- int, struct mbuf *, struct mbuf *, struct mbuf *));
- #endif