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- /*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1982, 1986, 1989, 1993
- * The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
- * $FreeBSD$
- */
- #ifndef _NETINET_UDP_VAR_H_
- #define _NETINET_UDP_VAR_H_
- /*
- * UDP kernel structures and variables.
- */
- struct udpiphdr {
- struct ipovly ui_i; /* overlaid ip structure */
- struct udphdr ui_u; /* udp header */
- };
- #define ui_x1 ui_i.ih_x1
- #define ui_v ui_i.ih_x1[0]
- #define ui_pr ui_i.ih_pr
- #define ui_len ui_i.ih_len
- #define ui_src ui_i.ih_src
- #define ui_dst ui_i.ih_dst
- #define ui_sport ui_u.uh_sport
- #define ui_dport ui_u.uh_dport
- #define ui_ulen ui_u.uh_ulen
- #define ui_sum ui_u.uh_sum
- struct inpcb;
- struct mbuf;
- typedef void(*udp_tun_func_t)(struct mbuf *, int, struct inpcb *,
- const struct sockaddr *, void *);
- typedef void(*udp_tun_icmp_t)(int, struct sockaddr *, void *, void *);
- /*
- * UDP control block; one per udp.
- */
- struct udpcb {
- udp_tun_func_t u_tun_func; /* UDP kernel tunneling callback. */
- udp_tun_icmp_t u_icmp_func; /* UDP kernel tunneling icmp callback */
- u_int u_flags; /* Generic UDP flags. */
- uint16_t u_rxcslen; /* Coverage for incoming datagrams. */
- uint16_t u_txcslen; /* Coverage for outgoing datagrams. */
- void *u_tun_ctx; /* Tunneling callback context. */
- };
- #define intoudpcb(ip) ((struct udpcb *)(ip)->inp_ppcb)
- #define sotoudpcb(so) (intoudpcb(sotoinpcb(so)))
- /* IPsec: ESP in UDP tunneling: */
- #define UF_ESPINUDP_NON_IKE 0x00000001 /* w/ non-IKE marker .. */
- /* .. per draft-ietf-ipsec-nat-t-ike-0[01],
- * and draft-ietf-ipsec-udp-encaps-(00/)01.txt */
- #define UF_ESPINUDP 0x00000002 /* w/ non-ESP marker. */
- struct udpstat {
- /* input statistics: */
- uint64_t udps_ipackets; /* total input packets */
- uint64_t udps_hdrops; /* packet shorter than header */
- uint64_t udps_badsum; /* checksum error */
- uint64_t udps_nosum; /* no checksum */
- uint64_t udps_badlen; /* data length larger than packet */
- uint64_t udps_noport; /* no socket on port */
- uint64_t udps_noportbcast; /* of above, arrived as broadcast */
- uint64_t udps_fullsock; /* not delivered, input socket full */
- uint64_t udpps_pcbcachemiss; /* input packets missing pcb cache */
- uint64_t udpps_pcbhashmiss; /* input packets not for hashed pcb */
- /* output statistics: */
- uint64_t udps_opackets; /* total output packets */
- uint64_t udps_fastout; /* output packets on fast path */
- /* of no socket on port, arrived as multicast */
- uint64_t udps_noportmcast;
- uint64_t udps_filtermcast; /* blocked by multicast filter */
- };
- #ifdef _KERNEL
- #include <sys/counter.h>
- VNET_PCPUSTAT_DECLARE(struct udpstat, udpstat);
- /*
- * In-kernel consumers can use these accessor macros directly to update
- * stats.
- */
- #define UDPSTAT_ADD(name, val) \
- VNET_PCPUSTAT_ADD(struct udpstat, udpstat, name, (val))
- #define UDPSTAT_INC(name) UDPSTAT_ADD(name, 1)
- /*
- * Kernel module consumers must use this accessor macro.
- */
- void kmod_udpstat_inc(int statnum);
- #define KMOD_UDPSTAT_INC(name) \
- kmod_udpstat_inc(offsetof(struct udpstat, name) / sizeof(uint64_t))
- #endif
- /*
- * Identifiers for UDP sysctl nodes.
- */
- #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
- #define UDPCTL_STATS 2 /* statistics (read-only) */
- #define UDPCTL_MAXDGRAM 3 /* max datagram size */
- #define UDPCTL_RECVSPACE 4 /* default receive buffer space */
- #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
- #ifdef _KERNEL
- #include <netinet/in_pcb.h>
- SYSCTL_DECL(_net_inet_udp);
- extern struct pr_usrreqs udp_usrreqs;
- VNET_DECLARE(struct inpcbhead, udb);
- VNET_DECLARE(struct inpcbinfo, udbinfo);
- VNET_DECLARE(struct inpcbhead, ulitecb);
- VNET_DECLARE(struct inpcbinfo, ulitecbinfo);
- #define V_udb VNET(udb)
- #define V_udbinfo VNET(udbinfo)
- #define V_ulitecb VNET(ulitecb)
- #define V_ulitecbinfo VNET(ulitecbinfo)
- extern u_long udp_sendspace;
- extern u_long udp_recvspace;
- VNET_DECLARE(int, udp_cksum);
- VNET_DECLARE(int, udp_blackhole);
- VNET_DECLARE(int, udp_log_in_vain);
- #define V_udp_cksum VNET(udp_cksum)
- #define V_udp_blackhole VNET(udp_blackhole)
- #define V_udp_log_in_vain VNET(udp_log_in_vain)
- VNET_DECLARE(int, zero_checksum_port);
- #define V_zero_checksum_port VNET(zero_checksum_port)
- static __inline struct inpcbinfo *
- udp_get_inpcbinfo(int protocol)
- {
- return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
- }
- static __inline struct inpcbhead *
- udp_get_pcblist(int protocol)
- {
- return (protocol == IPPROTO_UDP) ? &V_udb : &V_ulitecb;
- }
- int udp_newudpcb(struct inpcb *);
- void udp_discardcb(struct udpcb *);
- void udp_ctlinput(int, struct sockaddr *, void *);
- void udplite_ctlinput(int, struct sockaddr *, void *);
- int udp_ctloutput(struct socket *, struct sockopt *);
- void udp_init(void);
- void udplite_init(void);
- int udp_input(struct mbuf **, int *, int);
- void udplite_input(struct mbuf *, int);
- struct inpcb *udp_notify(struct inpcb *inp, int errno);
- int udp_shutdown(struct socket *so);
- int udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f,
- udp_tun_icmp_t i, void *ctx);
- #endif /* _KERNEL */
- #endif /* _NETINET_UDP_VAR_H_ */
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