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33 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/netinet/udp_var.h,v 1.22.2.1 2001/02/18 07:12:25 luigi Exp $
35 * $DragonFly: src/sys/netinet/udp_var.h,v 1.4 2003/11/08 07:57:51 dillon Exp $
38 #ifndef _NETINET_UDP_VAR_H_
39 #define _NETINET_UDP_VAR_H_
42 * UDP kernel structures and variables.
45 struct ipovly ui_i; /* overlaid ip structure */
46 struct udphdr ui_u; /* udp header */
48 #define ui_x1 ui_i.ih_x1
49 #define ui_pr ui_i.ih_pr
50 #define ui_len ui_i.ih_len
51 #define ui_src ui_i.ih_src
52 #define ui_dst ui_i.ih_dst
53 #define ui_sport ui_u.uh_sport
54 #define ui_dport ui_u.uh_dport
55 #define ui_ulen ui_u.uh_ulen
56 #define ui_sum ui_u.uh_sum
59 /* input statistics: */
60 u_long udps_ipackets; /* total input packets */
61 u_long udps_hdrops; /* packet shorter than header */
62 u_long udps_badsum; /* checksum error */
63 u_long udps_nosum; /* no checksum */
64 u_long udps_badlen; /* data length larger than packet */
65 u_long udps_noport; /* no socket on port */
66 u_long udps_noportbcast; /* of above, arrived as broadcast */
67 u_long udps_fullsock; /* not delivered, input socket full */
68 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
69 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */
70 /* output statistics: */
71 u_long udps_opackets; /* total output packets */
72 u_long udps_fastout; /* output packets on fast path */
73 /* of no socket on port, arrived as multicast */
74 u_long udps_noportmcast;
78 * Names for UDP sysctl objects
80 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
81 #define UDPCTL_STATS 2 /* statistics (read-only) */
82 #define UDPCTL_MAXDGRAM 3 /* max datagram size */
83 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */
84 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
85 #define UDPCTL_MAXID 6
87 #define UDPCTL_NAMES { \
89 { "checksum", CTLTYPE_INT }, \
90 { "stats", CTLTYPE_STRUCT }, \
91 { "maxdgram", CTLTYPE_INT }, \
92 { "recvspace", CTLTYPE_INT }, \
93 { "pcblist", CTLTYPE_STRUCT }, \
98 SYSCTL_DECL(_net_inet_udp);
101 extern struct pr_usrreqs udp_usrreqs;
102 extern struct inpcbhead udb;
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 void udp_ctlinput (int, struct sockaddr *, void *);
110 void udp_init (void);
111 void udp_thread_init (void);
112 void udp_input (struct mbuf *, int, int);
114 void udp_notify (struct inpcb *inp, int errno);
115 int udp_shutdown (struct socket *so);
118 udp_soport(struct socket *);