1 /* 2 * Copyright (c) 2003, 2004 Jeffrey M. Hsu. All rights reserved. 3 * Copyright (c) 2003, 2004 The DragonFly Project. All rights reserved. 4 * 5 * This code is derived from software contributed to The DragonFly Project 6 * by Jeffrey M. Hsu. 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 DragonFly Project nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific, prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1982, 1986, 1989, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 63 * $FreeBSD: src/sys/netinet/udp_var.h,v 1.22.2.1 2001/02/18 07:12:25 luigi Exp $ 64 * $DragonFly: src/sys/netinet/udp_var.h,v 1.19 2008/11/11 10:46:58 sephe Exp $ 65 */ 66 67 #ifndef _NETINET_UDP_VAR_H_ 68 #define _NETINET_UDP_VAR_H_ 69 70 #ifndef _NETINET_IP_VAR_H_ 71 #include <netinet/ip_var.h> 72 #endif 73 #ifndef _NETINET_UDP_H_ 74 #include <netinet/udp.h> 75 #endif 76 77 /* 78 * UDP kernel structures and variables. 79 */ 80 struct udpiphdr { 81 struct ipovly ui_i; /* overlaid ip structure */ 82 struct udphdr ui_u; /* udp header */ 83 }; 84 #define ui_x1 ui_i.ih_x1 85 #define ui_pr ui_i.ih_pr 86 #define ui_len ui_i.ih_len 87 #define ui_src ui_i.ih_src 88 #define ui_dst ui_i.ih_dst 89 #define ui_sport ui_u.uh_sport 90 #define ui_dport ui_u.uh_dport 91 #define ui_ulen ui_u.uh_ulen 92 #define ui_sum ui_u.uh_sum 93 94 /* 95 * UDP Statistics. 96 * 97 * NOTE: Make sure this struct's size is multiple cache line size. 98 */ 99 struct udpstat { 100 /* input statistics: */ 101 u_long udps_ipackets; /* total input packets */ 102 u_long udps_hdrops; /* packet shorter than header */ 103 u_long udps_badsum; /* checksum error */ 104 u_long udps_nosum; /* no checksum */ 105 u_long udps_badlen; /* data length larger than packet */ 106 u_long udps_noport; /* no socket on port */ 107 u_long udps_noportbcast; /* of above, arrived as broadcast */ 108 u_long udps_fullsock; /* not delivered, input socket full */ 109 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */ 110 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */ 111 /* output statistics: */ 112 u_long udps_opackets; /* total output packets */ 113 u_long udps_fastout; /* output packets on fast path */ 114 /* of no socket on port, arrived as multicast */ 115 u_long udps_noportmcast; 116 u_long udps_pad[3]; /* pad to cache line size (64B) */ 117 }; 118 #ifdef _KERNEL 119 CTASSERT((sizeof(struct udpstat) & __VM_CACHELINE_MASK) == 0); 120 #endif 121 122 /* 123 * Names for UDP sysctl objects 124 */ 125 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 126 #define UDPCTL_STATS 2 /* statistics (read-only) */ 127 #define UDPCTL_MAXDGRAM 3 /* max datagram size */ 128 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */ 129 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */ 130 #define UDPCTL_MAXID 6 131 132 #define UDPCTL_NAMES { \ 133 { 0, 0 }, \ 134 { "checksum", CTLTYPE_INT }, \ 135 { "stats", CTLTYPE_STRUCT }, \ 136 { "maxdgram", CTLTYPE_INT }, \ 137 { "recvspace", CTLTYPE_INT }, \ 138 { "pcblist", CTLTYPE_STRUCT }, \ 139 } 140 141 #ifdef _KERNEL 142 143 #define INP_WASBOUND_NOTANY INP_FLAG_PROTO1 /* bound to non-null laddr */ 144 145 #ifdef SYSCTL_DECL 146 SYSCTL_DECL(_net_inet_udp); 147 #endif 148 149 #define udp_stat udpstat_percpu[mycpuid] 150 151 extern struct pr_usrreqs udp_usrreqs; 152 extern struct inpcbinfo udbinfo[MAXCPU]; 153 extern u_long udp_sendspace; 154 extern u_long udp_recvspace; 155 extern struct udpstat udpstat_percpu[MAXCPU]; 156 extern int log_in_vain; 157 158 int udp_addrcpu (in_addr_t faddr, in_port_t fport, 159 in_addr_t laddr, in_port_t lport); 160 int udp_addrhash (in_addr_t faddr, in_port_t fport, 161 in_addr_t laddr, in_port_t lport); 162 struct lwkt_port *udp_addrport (in_addr_t faddr, in_port_t fport, 163 in_addr_t laddr, in_port_t lport); 164 void udp_ctlinput(netmsg_t msg); 165 void udp_ctloutput(netmsg_t msg); 166 void udp_init (void); 167 void udp_thread_init (void); 168 int udp_input (struct mbuf **, int *, int); 169 void udp_notify (struct inpcb *inp, int error); 170 void udp_shutdown (union netmsg *); 171 struct lwkt_port *udp_ctlport (int, struct sockaddr *, void *, int *); 172 struct lwkt_port *udp_initport(void); 173 inp_notify_t udp_get_inpnotify(int, const struct sockaddr *, 174 struct ip **, int *); 175 176 #endif /* _KERNEL */ 177 178 #endif 179