1/*-
2 * Copyright (c) 1982, 1986, 1989, 1993
3 * The Regents of the University of California.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
31 * $FreeBSD: head/sys/netinet/udp_var.h 269699 2014-08-08 01:57:15Z kevlo $
32 */
33
34#ifndef _NETINET_UDP_VAR_H_
35#define _NETINET_UDP_VAR_H_
36
37/*
38 * UDP kernel structures and variables.
39 */
40struct udpiphdr {
41 struct ipovly ui_i; /* overlaid ip structure */
42 struct udphdr ui_u; /* udp header */
43};
44#define ui_x1 ui_i.ih_x1
45#define ui_v ui_i.ih_x1[0]
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
55struct inpcb;
56struct mbuf;
57
58typedef void(*udp_tun_func_t)(struct mbuf *, int off, struct inpcb *);
59
60/*
61 * UDP control block; one per udp.
62 */
63struct udpcb {
64 udp_tun_func_t u_tun_func; /* UDP kernel tunneling callback. */
65 u_int u_flags; /* Generic UDP flags. */
66 uint16_t u_rxcslen; /* Coverage for incoming datagrams. */
67 uint16_t u_txcslen; /* Coverage for outgoing datagrams. */
68};
69
70#define intoudpcb(ip) ((struct udpcb *)(ip)->inp_ppcb)
71#define sotoudpcb(so) (intoudpcb(sotoinpcb(so)))
72
73 /* IPsec: ESP in UDP tunneling: */
74#define UF_ESPINUDP_NON_IKE 0x00000001 /* w/ non-IKE marker .. */
75 /* .. per draft-ietf-ipsec-nat-t-ike-0[01],
76 * and draft-ietf-ipsec-udp-encaps-(00/)01.txt */
77#define UF_ESPINUDP 0x00000002 /* w/ non-ESP marker. */
78
79struct udpstat {
80 /* input statistics: */
81 uint64_t udps_ipackets; /* total input packets */
82 uint64_t udps_hdrops; /* packet shorter than header */
83 uint64_t udps_badsum; /* checksum error */
84 uint64_t udps_nosum; /* no checksum */
85 uint64_t udps_badlen; /* data length larger than packet */
86 uint64_t udps_noport; /* no socket on port */
87 uint64_t udps_noportbcast; /* of above, arrived as broadcast */
88 uint64_t udps_fullsock; /* not delivered, input socket full */
89 uint64_t udpps_pcbcachemiss; /* input packets missing pcb cache */
90 uint64_t udpps_pcbhashmiss; /* input packets not for hashed pcb */
91 /* output statistics: */
92 uint64_t udps_opackets; /* total output packets */
93 uint64_t udps_fastout; /* output packets on fast path */
94 /* of no socket on port, arrived as multicast */
95 uint64_t udps_noportmcast;
96 uint64_t udps_filtermcast; /* blocked by multicast filter */
97};
98
99#ifdef _KERNEL
100#include <sys/counter.h>
101
102VNET_PCPUSTAT_DECLARE(struct udpstat, udpstat);
103/*
104 * In-kernel consumers can use these accessor macros directly to update
105 * stats.
106 */
107#define UDPSTAT_ADD(name, val) \
108 VNET_PCPUSTAT_ADD(struct udpstat, udpstat, name, (val))
109#define UDPSTAT_INC(name) UDPSTAT_ADD(name, 1)
110
111/*
112 * Kernel module consumers must use this accessor macro.
113 */
114void kmod_udpstat_inc(int statnum);
115#define KMOD_UDPSTAT_INC(name) \
116 kmod_udpstat_inc(offsetof(struct udpstat, name) / sizeof(uint64_t))
117#endif
118
119/*
120 * Identifiers for UDP sysctl nodes.
121 */
122#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
123#define UDPCTL_STATS 2 /* statistics (read-only) */
124#define UDPCTL_MAXDGRAM 3 /* max datagram size */
125#define UDPCTL_RECVSPACE 4 /* default receive buffer space */
126#define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
127
128#ifdef _KERNEL
129#include <netinet/in_pcb.h>
130SYSCTL_DECL(_net_inet_udp);
131
132extern struct pr_usrreqs udp_usrreqs;
133VNET_DECLARE(struct inpcbhead, udb);
134VNET_DECLARE(struct inpcbinfo, udbinfo);
135VNET_DECLARE(struct inpcbhead, ulitecb);
136VNET_DECLARE(struct inpcbinfo, ulitecbinfo);
137#define V_udb VNET(udb)
138#define V_udbinfo VNET(udbinfo)
139#define V_ulitecb VNET(ulitecb)
140#define V_ulitecbinfo VNET(ulitecbinfo)
141
142extern u_long udp_sendspace;
143extern u_long udp_recvspace;
144VNET_DECLARE(int, udp_cksum);
145VNET_DECLARE(int, udp_blackhole);
146#define V_udp_cksum VNET(udp_cksum)
147#define V_udp_blackhole VNET(udp_blackhole)
148extern int udp_log_in_vain;
149
150static __inline struct inpcbinfo *
151get_inpcbinfo(int protocol)
152{
153 return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
154}
155
156static __inline struct inpcbhead *
157get_pcblist(int protocol)
158{
159 return (protocol == IPPROTO_UDP) ? &V_udb : &V_ulitecb;
160}
161
162int udp_newudpcb(struct inpcb *);
163void udp_discardcb(struct udpcb *);
164
165void udp_ctlinput(int, struct sockaddr *, void *);
166void udplite_ctlinput(int, struct sockaddr *, void *);
167int udp_ctloutput(struct socket *, struct sockopt *);
168void udp_init(void);
169void udplite_init(void);
170#ifdef VIMAGE
171void udp_destroy(void);
172void udplite_destroy(void);
173#endif
174int udp_input(struct mbuf **, int *, int);
175void udplite_input(struct mbuf *, int);
176struct inpcb *udp_notify(struct inpcb *inp, int errno);
177int udp_shutdown(struct socket *so);
178
179int udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f);
180
181#endif /* _KERNEL */
182
183#endif /* _NETINET_UDP_VAR_H_ */
2 * Copyright (c) 1982, 1986, 1989, 1993
3 * The Regents of the University of California.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
31 * $FreeBSD: head/sys/netinet/udp_var.h 269699 2014-08-08 01:57:15Z kevlo $
32 */
33
34#ifndef _NETINET_UDP_VAR_H_
35#define _NETINET_UDP_VAR_H_
36
37/*
38 * UDP kernel structures and variables.
39 */
40struct udpiphdr {
41 struct ipovly ui_i; /* overlaid ip structure */
42 struct udphdr ui_u; /* udp header */
43};
44#define ui_x1 ui_i.ih_x1
45#define ui_v ui_i.ih_x1[0]
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
55struct inpcb;
56struct mbuf;
57
58typedef void(*udp_tun_func_t)(struct mbuf *, int off, struct inpcb *);
59
60/*
61 * UDP control block; one per udp.
62 */
63struct udpcb {
64 udp_tun_func_t u_tun_func; /* UDP kernel tunneling callback. */
65 u_int u_flags; /* Generic UDP flags. */
66 uint16_t u_rxcslen; /* Coverage for incoming datagrams. */
67 uint16_t u_txcslen; /* Coverage for outgoing datagrams. */
68};
69
70#define intoudpcb(ip) ((struct udpcb *)(ip)->inp_ppcb)
71#define sotoudpcb(so) (intoudpcb(sotoinpcb(so)))
72
73 /* IPsec: ESP in UDP tunneling: */
74#define UF_ESPINUDP_NON_IKE 0x00000001 /* w/ non-IKE marker .. */
75 /* .. per draft-ietf-ipsec-nat-t-ike-0[01],
76 * and draft-ietf-ipsec-udp-encaps-(00/)01.txt */
77#define UF_ESPINUDP 0x00000002 /* w/ non-ESP marker. */
78
79struct udpstat {
80 /* input statistics: */
81 uint64_t udps_ipackets; /* total input packets */
82 uint64_t udps_hdrops; /* packet shorter than header */
83 uint64_t udps_badsum; /* checksum error */
84 uint64_t udps_nosum; /* no checksum */
85 uint64_t udps_badlen; /* data length larger than packet */
86 uint64_t udps_noport; /* no socket on port */
87 uint64_t udps_noportbcast; /* of above, arrived as broadcast */
88 uint64_t udps_fullsock; /* not delivered, input socket full */
89 uint64_t udpps_pcbcachemiss; /* input packets missing pcb cache */
90 uint64_t udpps_pcbhashmiss; /* input packets not for hashed pcb */
91 /* output statistics: */
92 uint64_t udps_opackets; /* total output packets */
93 uint64_t udps_fastout; /* output packets on fast path */
94 /* of no socket on port, arrived as multicast */
95 uint64_t udps_noportmcast;
96 uint64_t udps_filtermcast; /* blocked by multicast filter */
97};
98
99#ifdef _KERNEL
100#include <sys/counter.h>
101
102VNET_PCPUSTAT_DECLARE(struct udpstat, udpstat);
103/*
104 * In-kernel consumers can use these accessor macros directly to update
105 * stats.
106 */
107#define UDPSTAT_ADD(name, val) \
108 VNET_PCPUSTAT_ADD(struct udpstat, udpstat, name, (val))
109#define UDPSTAT_INC(name) UDPSTAT_ADD(name, 1)
110
111/*
112 * Kernel module consumers must use this accessor macro.
113 */
114void kmod_udpstat_inc(int statnum);
115#define KMOD_UDPSTAT_INC(name) \
116 kmod_udpstat_inc(offsetof(struct udpstat, name) / sizeof(uint64_t))
117#endif
118
119/*
120 * Identifiers for UDP sysctl nodes.
121 */
122#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
123#define UDPCTL_STATS 2 /* statistics (read-only) */
124#define UDPCTL_MAXDGRAM 3 /* max datagram size */
125#define UDPCTL_RECVSPACE 4 /* default receive buffer space */
126#define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
127
128#ifdef _KERNEL
129#include <netinet/in_pcb.h>
130SYSCTL_DECL(_net_inet_udp);
131
132extern struct pr_usrreqs udp_usrreqs;
133VNET_DECLARE(struct inpcbhead, udb);
134VNET_DECLARE(struct inpcbinfo, udbinfo);
135VNET_DECLARE(struct inpcbhead, ulitecb);
136VNET_DECLARE(struct inpcbinfo, ulitecbinfo);
137#define V_udb VNET(udb)
138#define V_udbinfo VNET(udbinfo)
139#define V_ulitecb VNET(ulitecb)
140#define V_ulitecbinfo VNET(ulitecbinfo)
141
142extern u_long udp_sendspace;
143extern u_long udp_recvspace;
144VNET_DECLARE(int, udp_cksum);
145VNET_DECLARE(int, udp_blackhole);
146#define V_udp_cksum VNET(udp_cksum)
147#define V_udp_blackhole VNET(udp_blackhole)
148extern int udp_log_in_vain;
149
150static __inline struct inpcbinfo *
151get_inpcbinfo(int protocol)
152{
153 return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
154}
155
156static __inline struct inpcbhead *
157get_pcblist(int protocol)
158{
159 return (protocol == IPPROTO_UDP) ? &V_udb : &V_ulitecb;
160}
161
162int udp_newudpcb(struct inpcb *);
163void udp_discardcb(struct udpcb *);
164
165void udp_ctlinput(int, struct sockaddr *, void *);
166void udplite_ctlinput(int, struct sockaddr *, void *);
167int udp_ctloutput(struct socket *, struct sockopt *);
168void udp_init(void);
169void udplite_init(void);
170#ifdef VIMAGE
171void udp_destroy(void);
172void udplite_destroy(void);
173#endif
174int udp_input(struct mbuf **, int *, int);
175void udplite_input(struct mbuf *, int);
176struct inpcb *udp_notify(struct inpcb *inp, int errno);
177int udp_shutdown(struct socket *so);
178
179int udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f);
180
181#endif /* _KERNEL */
182
183#endif /* _NETINET_UDP_VAR_H_ */