1*199767f8SToomas Soome /*-
2*199767f8SToomas Soome * Copyright (c) 1982, 1986, 1989, 1993
3*199767f8SToomas Soome * The Regents of the University of California.
4*199767f8SToomas Soome * All rights reserved.
5*199767f8SToomas Soome *
6*199767f8SToomas Soome * Redistribution and use in source and binary forms, with or without
7*199767f8SToomas Soome * modification, are permitted provided that the following conditions
8*199767f8SToomas Soome * are met:
9*199767f8SToomas Soome * 1. Redistributions of source code must retain the above copyright
10*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer.
11*199767f8SToomas Soome * 2. Redistributions in binary form must reproduce the above copyright
12*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer in the
13*199767f8SToomas Soome * documentation and/or other materials provided with the distribution.
14*199767f8SToomas Soome * 4. Neither the name of the University nor the names of its contributors
15*199767f8SToomas Soome * may be used to endorse or promote products derived from this software
16*199767f8SToomas Soome * without specific prior written permission.
17*199767f8SToomas Soome *
18*199767f8SToomas Soome * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19*199767f8SToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20*199767f8SToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21*199767f8SToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22*199767f8SToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23*199767f8SToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24*199767f8SToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25*199767f8SToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26*199767f8SToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27*199767f8SToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28*199767f8SToomas Soome * SUCH DAMAGE.
29*199767f8SToomas Soome *
30*199767f8SToomas Soome * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
31*199767f8SToomas Soome * $FreeBSD$
32*199767f8SToomas Soome */
33*199767f8SToomas Soome
34*199767f8SToomas Soome #ifndef _NETINET_UDP_VAR_H_
35*199767f8SToomas Soome #define _NETINET_UDP_VAR_H_
36*199767f8SToomas Soome
37*199767f8SToomas Soome /*
38*199767f8SToomas Soome * UDP kernel structures and variables.
39*199767f8SToomas Soome */
40*199767f8SToomas Soome struct udpiphdr {
41*199767f8SToomas Soome struct ipovly ui_i; /* overlaid ip structure */
42*199767f8SToomas Soome struct udphdr ui_u; /* udp header */
43*199767f8SToomas Soome };
44*199767f8SToomas Soome #define ui_x1 ui_i.ih_x1
45*199767f8SToomas Soome #define ui_v ui_i.ih_x1[0]
46*199767f8SToomas Soome #define ui_pr ui_i.ih_pr
47*199767f8SToomas Soome #define ui_len ui_i.ih_len
48*199767f8SToomas Soome #define ui_src ui_i.ih_src
49*199767f8SToomas Soome #define ui_dst ui_i.ih_dst
50*199767f8SToomas Soome #define ui_sport ui_u.uh_sport
51*199767f8SToomas Soome #define ui_dport ui_u.uh_dport
52*199767f8SToomas Soome #define ui_ulen ui_u.uh_ulen
53*199767f8SToomas Soome #define ui_sum ui_u.uh_sum
54*199767f8SToomas Soome
55*199767f8SToomas Soome struct inpcb;
56*199767f8SToomas Soome struct mbuf;
57*199767f8SToomas Soome
58*199767f8SToomas Soome typedef void(*udp_tun_func_t)(struct mbuf *, int off, struct inpcb *,
59*199767f8SToomas Soome const struct sockaddr *, void *);
60*199767f8SToomas Soome
61*199767f8SToomas Soome /*
62*199767f8SToomas Soome * UDP control block; one per udp.
63*199767f8SToomas Soome */
64*199767f8SToomas Soome struct udpcb {
65*199767f8SToomas Soome udp_tun_func_t u_tun_func; /* UDP kernel tunneling callback. */
66*199767f8SToomas Soome u_int u_flags; /* Generic UDP flags. */
67*199767f8SToomas Soome uint16_t u_rxcslen; /* Coverage for incoming datagrams. */
68*199767f8SToomas Soome uint16_t u_txcslen; /* Coverage for outgoing datagrams. */
69*199767f8SToomas Soome void *u_tun_ctx; /* Tunneling callback context. */
70*199767f8SToomas Soome };
71*199767f8SToomas Soome
72*199767f8SToomas Soome #define intoudpcb(ip) ((struct udpcb *)(ip)->inp_ppcb)
73*199767f8SToomas Soome #define sotoudpcb(so) (intoudpcb(sotoinpcb(so)))
74*199767f8SToomas Soome
75*199767f8SToomas Soome /* IPsec: ESP in UDP tunneling: */
76*199767f8SToomas Soome #define UF_ESPINUDP_NON_IKE 0x00000001 /* w/ non-IKE marker .. */
77*199767f8SToomas Soome /* .. per draft-ietf-ipsec-nat-t-ike-0[01],
78*199767f8SToomas Soome * and draft-ietf-ipsec-udp-encaps-(00/)01.txt */
79*199767f8SToomas Soome #define UF_ESPINUDP 0x00000002 /* w/ non-ESP marker. */
80*199767f8SToomas Soome
81*199767f8SToomas Soome struct udpstat {
82*199767f8SToomas Soome /* input statistics: */
83*199767f8SToomas Soome uint64_t udps_ipackets; /* total input packets */
84*199767f8SToomas Soome uint64_t udps_hdrops; /* packet shorter than header */
85*199767f8SToomas Soome uint64_t udps_badsum; /* checksum error */
86*199767f8SToomas Soome uint64_t udps_nosum; /* no checksum */
87*199767f8SToomas Soome uint64_t udps_badlen; /* data length larger than packet */
88*199767f8SToomas Soome uint64_t udps_noport; /* no socket on port */
89*199767f8SToomas Soome uint64_t udps_noportbcast; /* of above, arrived as broadcast */
90*199767f8SToomas Soome uint64_t udps_fullsock; /* not delivered, input socket full */
91*199767f8SToomas Soome uint64_t udpps_pcbcachemiss; /* input packets missing pcb cache */
92*199767f8SToomas Soome uint64_t udpps_pcbhashmiss; /* input packets not for hashed pcb */
93*199767f8SToomas Soome /* output statistics: */
94*199767f8SToomas Soome uint64_t udps_opackets; /* total output packets */
95*199767f8SToomas Soome uint64_t udps_fastout; /* output packets on fast path */
96*199767f8SToomas Soome /* of no socket on port, arrived as multicast */
97*199767f8SToomas Soome uint64_t udps_noportmcast;
98*199767f8SToomas Soome uint64_t udps_filtermcast; /* blocked by multicast filter */
99*199767f8SToomas Soome };
100*199767f8SToomas Soome
101*199767f8SToomas Soome #ifdef _KERNEL
102*199767f8SToomas Soome #include <sys/counter.h>
103*199767f8SToomas Soome
104*199767f8SToomas Soome VNET_PCPUSTAT_DECLARE(struct udpstat, udpstat);
105*199767f8SToomas Soome /*
106*199767f8SToomas Soome * In-kernel consumers can use these accessor macros directly to update
107*199767f8SToomas Soome * stats.
108*199767f8SToomas Soome */
109*199767f8SToomas Soome #define UDPSTAT_ADD(name, val) \
110*199767f8SToomas Soome VNET_PCPUSTAT_ADD(struct udpstat, udpstat, name, (val))
111*199767f8SToomas Soome #define UDPSTAT_INC(name) UDPSTAT_ADD(name, 1)
112*199767f8SToomas Soome
113*199767f8SToomas Soome /*
114*199767f8SToomas Soome * Kernel module consumers must use this accessor macro.
115*199767f8SToomas Soome */
116*199767f8SToomas Soome void kmod_udpstat_inc(int statnum);
117*199767f8SToomas Soome #define KMOD_UDPSTAT_INC(name) \
118*199767f8SToomas Soome kmod_udpstat_inc(offsetof(struct udpstat, name) / sizeof(uint64_t))
119*199767f8SToomas Soome #endif
120*199767f8SToomas Soome
121*199767f8SToomas Soome /*
122*199767f8SToomas Soome * Identifiers for UDP sysctl nodes.
123*199767f8SToomas Soome */
124*199767f8SToomas Soome #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
125*199767f8SToomas Soome #define UDPCTL_STATS 2 /* statistics (read-only) */
126*199767f8SToomas Soome #define UDPCTL_MAXDGRAM 3 /* max datagram size */
127*199767f8SToomas Soome #define UDPCTL_RECVSPACE 4 /* default receive buffer space */
128*199767f8SToomas Soome #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
129*199767f8SToomas Soome
130*199767f8SToomas Soome #ifdef _KERNEL
131*199767f8SToomas Soome #include <netinet/in_pcb.h>
132*199767f8SToomas Soome SYSCTL_DECL(_net_inet_udp);
133*199767f8SToomas Soome
134*199767f8SToomas Soome extern struct pr_usrreqs udp_usrreqs;
135*199767f8SToomas Soome VNET_DECLARE(struct inpcbhead, udb);
136*199767f8SToomas Soome VNET_DECLARE(struct inpcbinfo, udbinfo);
137*199767f8SToomas Soome VNET_DECLARE(struct inpcbhead, ulitecb);
138*199767f8SToomas Soome VNET_DECLARE(struct inpcbinfo, ulitecbinfo);
139*199767f8SToomas Soome #define V_udb VNET(udb)
140*199767f8SToomas Soome #define V_udbinfo VNET(udbinfo)
141*199767f8SToomas Soome #define V_ulitecb VNET(ulitecb)
142*199767f8SToomas Soome #define V_ulitecbinfo VNET(ulitecbinfo)
143*199767f8SToomas Soome
144*199767f8SToomas Soome extern u_long udp_sendspace;
145*199767f8SToomas Soome extern u_long udp_recvspace;
146*199767f8SToomas Soome VNET_DECLARE(int, udp_cksum);
147*199767f8SToomas Soome VNET_DECLARE(int, udp_blackhole);
148*199767f8SToomas Soome #define V_udp_cksum VNET(udp_cksum)
149*199767f8SToomas Soome #define V_udp_blackhole VNET(udp_blackhole)
150*199767f8SToomas Soome extern int udp_log_in_vain;
151*199767f8SToomas Soome
152*199767f8SToomas Soome static __inline struct inpcbinfo *
udp_get_inpcbinfo(int protocol)153*199767f8SToomas Soome udp_get_inpcbinfo(int protocol)
154*199767f8SToomas Soome {
155*199767f8SToomas Soome return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
156*199767f8SToomas Soome }
157*199767f8SToomas Soome
158*199767f8SToomas Soome static __inline struct inpcbhead *
udp_get_pcblist(int protocol)159*199767f8SToomas Soome udp_get_pcblist(int protocol)
160*199767f8SToomas Soome {
161*199767f8SToomas Soome return (protocol == IPPROTO_UDP) ? &V_udb : &V_ulitecb;
162*199767f8SToomas Soome }
163*199767f8SToomas Soome
164*199767f8SToomas Soome int udp_newudpcb(struct inpcb *);
165*199767f8SToomas Soome void udp_discardcb(struct udpcb *);
166*199767f8SToomas Soome
167*199767f8SToomas Soome void udp_ctlinput(int, struct sockaddr *, void *);
168*199767f8SToomas Soome void udplite_ctlinput(int, struct sockaddr *, void *);
169*199767f8SToomas Soome int udp_ctloutput(struct socket *, struct sockopt *);
170*199767f8SToomas Soome void udp_init(void);
171*199767f8SToomas Soome void udplite_init(void);
172*199767f8SToomas Soome #ifdef VIMAGE
173*199767f8SToomas Soome void udp_destroy(void);
174*199767f8SToomas Soome void udplite_destroy(void);
175*199767f8SToomas Soome #endif
176*199767f8SToomas Soome int udp_input(struct mbuf **, int *, int);
177*199767f8SToomas Soome void udplite_input(struct mbuf *, int);
178*199767f8SToomas Soome struct inpcb *udp_notify(struct inpcb *inp, int errno);
179*199767f8SToomas Soome int udp_shutdown(struct socket *so);
180*199767f8SToomas Soome
181*199767f8SToomas Soome int udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f,
182*199767f8SToomas Soome void *ctx);
183*199767f8SToomas Soome
184*199767f8SToomas Soome #endif /* _KERNEL */
185*199767f8SToomas Soome
186*199767f8SToomas Soome #endif /* _NETINET_UDP_VAR_H_ */
187