2 * Copyright (c) 2003-2004 Jeffrey M. Hsu. All rights reserved.
3 * Copyright (c) 1982, 1986, 1989, 1993
4 * The Regents of the University of California. All rights reserved.
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16 * This product includes software developed by the University of
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34 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
35 * $FreeBSD: src/sys/netinet/udp_var.h,v 1.22.2.1 2001/02/18 07:12:25 luigi Exp $
36 * $DragonFly: src/sys/netinet/udp_var.h,v 1.11 2004/07/02 04:41:01 hsu Exp $
39 #ifndef _NETINET_UDP_VAR_H_
40 #define _NETINET_UDP_VAR_H_
43 * UDP kernel structures and variables.
46 struct ipovly ui_i; /* overlaid ip structure */
47 struct udphdr ui_u; /* udp header */
49 #define ui_x1 ui_i.ih_x1
50 #define ui_pr ui_i.ih_pr
51 #define ui_len ui_i.ih_len
52 #define ui_src ui_i.ih_src
53 #define ui_dst ui_i.ih_dst
54 #define ui_sport ui_u.uh_sport
55 #define ui_dport ui_u.uh_dport
56 #define ui_ulen ui_u.uh_ulen
57 #define ui_sum ui_u.uh_sum
60 /* input statistics: */
61 u_long udps_ipackets; /* total input packets */
62 u_long udps_hdrops; /* packet shorter than header */
63 u_long udps_badsum; /* checksum error */
64 u_long udps_nosum; /* no checksum */
65 u_long udps_badlen; /* data length larger than packet */
66 u_long udps_noport; /* no socket on port */
67 u_long udps_noportbcast; /* of above, arrived as broadcast */
68 u_long udps_fullsock; /* not delivered, input socket full */
69 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
70 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */
71 /* output statistics: */
72 u_long udps_opackets; /* total output packets */
73 u_long udps_fastout; /* output packets on fast path */
74 /* of no socket on port, arrived as multicast */
75 u_long udps_noportmcast;
79 * Names for UDP sysctl objects
81 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
82 #define UDPCTL_STATS 2 /* statistics (read-only) */
83 #define UDPCTL_MAXDGRAM 3 /* max datagram size */
84 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */
85 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
86 #define UDPCTL_MAXID 6
88 #define UDPCTL_NAMES { \
90 { "checksum", CTLTYPE_INT }, \
91 { "stats", CTLTYPE_STRUCT }, \
92 { "maxdgram", CTLTYPE_INT }, \
93 { "recvspace", CTLTYPE_INT }, \
94 { "pcblist", CTLTYPE_STRUCT }, \
99 SYSCTL_DECL(_net_inet_udp);
102 extern struct pr_usrreqs udp_usrreqs;
103 extern struct inpcbinfo udbinfo;
104 extern u_long udp_sendspace;
105 extern u_long udp_recvspace;
106 extern struct udpstat udpstat;
107 extern int log_in_vain;
109 int udp_addrcpu (in_addr_t faddr, in_port_t fport,
110 in_addr_t laddr, in_port_t lport);
111 void udp_ctlinput (int, struct sockaddr *, void *);
112 void udp_init (void);
113 void udp_thread_init (void);
114 void udp_input (struct mbuf *, ...);
115 void udp_notify (struct inpcb *inp, int errno);
116 int udp_shutdown (struct socket *so);
117 struct lwkt_port *udp_soport (struct socket *, struct sockaddr *, int);