1 /* $OpenBSD: udp_var.h,v 1.34 2017/11/02 14:01:18 florian Exp $ */ 2 /* $NetBSD: udp_var.h,v 1.12 1996/02/13 23:44:41 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1982, 1986, 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 33 */ 34 35 #ifndef _NETINET_UDP_VAR_H_ 36 #define _NETINET_UDP_VAR_H_ 37 38 /* 39 * UDP kernel structures and variables. 40 */ 41 struct udpiphdr { 42 struct ipovly ui_i; /* overlaid ip structure */ 43 struct udphdr ui_u; /* udp header */ 44 }; 45 #define ui_x1 ui_i.ih_x1 46 #define ui_pr ui_i.ih_pr 47 #define ui_len ui_i.ih_len 48 #define ui_src ui_i.ih_src 49 #define ui_dst ui_i.ih_dst 50 #define ui_sport ui_u.uh_sport 51 #define ui_dport ui_u.uh_dport 52 #define ui_ulen ui_u.uh_ulen 53 #define ui_sum ui_u.uh_sum 54 55 struct udpstat { 56 /* input statistics: */ 57 u_long udps_ipackets; /* total input packets */ 58 u_long udps_hdrops; /* packet shorter than header */ 59 u_long udps_badsum; /* checksum error */ 60 u_long udps_nosum; /* no checksum */ 61 u_long udps_badlen; /* data length larger than packet */ 62 u_long udps_noport; /* no socket on port */ 63 u_long udps_noportbcast; /* of above, arrived as broadcast */ 64 u_long udps_nosec; /* dropped for lack of ipsec */ 65 u_long udps_fullsock; /* not delivered, input socket full */ 66 u_long udps_pcbhashmiss; /* input packets missing pcb hash */ 67 u_long udps_inswcsum; /* input software-csummed packets */ 68 /* output statistics: */ 69 u_long udps_opackets; /* total output packets */ 70 u_long udps_outswcsum; /* output software-csummed packets */ 71 }; 72 73 /* 74 * Names for UDP sysctl objects 75 */ 76 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 77 #define UDPCTL_BADDYNAMIC 2 /* return bad dynamic port bitmap */ 78 #define UDPCTL_RECVSPACE 3 /* receive buffer space */ 79 #define UDPCTL_SENDSPACE 4 /* send buffer space */ 80 #define UDPCTL_STATS 5 /* UDP statistics */ 81 #define UDPCTL_ROOTONLY 6 /* root only port bitmap */ 82 #define UDPCTL_MAXID 7 83 84 #define UDPCTL_NAMES { \ 85 { 0, 0 }, \ 86 { "checksum", CTLTYPE_INT }, \ 87 { "baddynamic", CTLTYPE_STRUCT }, \ 88 { "recvspace", CTLTYPE_INT }, \ 89 { "sendspace", CTLTYPE_INT }, \ 90 { "stats", CTLTYPE_STRUCT }, \ 91 { "rootonly", CTLTYPE_STRUCT }, \ 92 } 93 94 #define UDPCTL_VARS { \ 95 NULL, \ 96 &udpcksum, \ 97 NULL, \ 98 &udp_recvspace, \ 99 &udp_sendspace, \ 100 NULL, \ 101 NULL \ 102 } 103 104 #ifdef _KERNEL 105 106 #include <sys/percpu.h> 107 108 enum udpstat_counters { 109 /* input statistics: */ 110 udps_ipackets, /* total input packets */ 111 udps_hdrops, /* packet shorter than header */ 112 udps_badsum, /* checksum error */ 113 udps_nosum, /* no checksum */ 114 udps_badlen, /* data length larger than packet */ 115 udps_noport, /* no socket on port */ 116 udps_noportbcast, /* of above, arrived as broadcast */ 117 udps_nosec, /* dropped for lack of ipsec */ 118 udps_fullsock, /* not delivered, input socket full */ 119 udps_pcbhashmiss, /* input packets missing pcb hash */ 120 udps_inswcsum, /* input software-csummed packets */ 121 /* output statistics: */ 122 udps_opackets, /* total output packets */ 123 udps_outswcsum, /* output software-csummed packets */ 124 125 udps_ncounters 126 }; 127 128 extern struct cpumem *udpcounters; 129 130 static inline void 131 udpstat_inc(enum udpstat_counters c) 132 { 133 counters_inc(udpcounters, c); 134 } 135 136 extern struct inpcbtable udbtable; 137 extern struct udpstat udpstat; 138 139 #ifdef INET6 140 void udp6_ctlinput(int, struct sockaddr *, u_int, void *); 141 #endif /* INET6 */ 142 void udp_ctlinput(int, struct sockaddr *, u_int, void *); 143 void udp_init(void); 144 int udp_input(struct mbuf **, int *, int, int); 145 #ifdef INET6 146 int udp6_output(struct inpcb *, struct mbuf *, struct mbuf *, 147 struct mbuf *); 148 #endif /* INET6 */ 149 int udp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 150 int udp_usrreq(struct socket *, 151 int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *); 152 int udp_attach(struct socket *, int); 153 int udp_detach(struct socket *); 154 #endif /* _KERNEL */ 155 #endif /* _NETINET_UDP_VAR_H_ */ 156