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33 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
37 #ifndef _NETINET_UDP_VAR_H_
38 #define _NETINET_UDP_VAR_H_
41 * UDP kernel structures and variables.
44 struct ipovly ui_i; /* overlaid ip structure */
45 struct udphdr ui_u; /* udp header */
47 #define ui_x1 ui_i.ih_x1
48 #define ui_pr ui_i.ih_pr
49 #define ui_len ui_i.ih_len
50 #define ui_src ui_i.ih_src
51 #define ui_dst ui_i.ih_dst
52 #define ui_sport ui_u.uh_sport
53 #define ui_dport ui_u.uh_dport
54 #define ui_ulen ui_u.uh_ulen
55 #define ui_sum ui_u.uh_sum
58 /* input statistics: */
59 u_long udps_ipackets; /* total input packets */
60 u_long udps_hdrops; /* packet shorter than header */
61 u_long udps_badsum; /* checksum error */
62 u_long udps_nosum; /* no checksum */
63 u_long udps_badlen; /* data length larger than packet */
64 u_long udps_noport; /* no socket on port */
65 u_long udps_noportbcast; /* of above, arrived as broadcast */
66 u_long udps_fullsock; /* not delivered, input socket full */
67 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
68 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */
69 /* output statistics: */
70 u_long udps_opackets; /* total output packets */
71 u_long udps_fastout; /* output packets on fast path */
72 /* of no socket on port, arrived as multicast */
73 u_long udps_noportmcast;
77 * Names for UDP sysctl objects
79 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
80 #define UDPCTL_STATS 2 /* statistics (read-only) */
81 #define UDPCTL_MAXDGRAM 3 /* max datagram size */
82 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */
83 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
84 #define UDPCTL_MAXID 6
86 #define UDPCTL_NAMES { \
88 { "checksum", CTLTYPE_INT }, \
89 { "stats", CTLTYPE_STRUCT }, \
90 { "maxdgram", CTLTYPE_INT }, \
91 { "recvspace", CTLTYPE_INT }, \
92 { "pcblist", CTLTYPE_STRUCT }, \
96 SYSCTL_DECL(_net_inet_udp);
98 extern struct pr_usrreqs udp_usrreqs;
99 extern struct inpcbhead udb;
100 extern struct inpcbinfo udbinfo;
101 extern u_long udp_sendspace;
102 extern u_long udp_recvspace;
103 extern struct udpstat udpstat;
104 extern int log_in_vain;
106 void udp_ctlinput(int, struct sockaddr *, void *);
108 void udp_input(struct mbuf *, int);
111 udp_notify(struct inpcb *inp, int errno);
112 int udp_shutdown(struct socket *so);