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Diffstat (limited to 'freebsd/sys/netinet/udp_var.h')
| -rw-r--r-- | freebsd/sys/netinet/udp_var.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/freebsd/sys/netinet/udp_var.h b/freebsd/sys/netinet/udp_var.h new file mode 100644 index 00000000..0bff6ea9 --- /dev/null +++ b/freebsd/sys/netinet/udp_var.h @@ -0,0 +1,161 @@ +/*- + * 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. + * 4. 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_HH_ +#define _NETINET_UDP_VAR_HH_ + +/* + * 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_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 + +typedef void(*udp_tun_func_t)(struct mbuf *, int off, struct inpcb *); + +/* + * UDP control block; one per udp. + */ +struct udpcb { + udp_tun_func_t u_tun_func; /* UDP kernel tunneling callback. */ + u_int u_flags; /* Generic UDP flags. */ +}; + +#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: */ + u_long udps_ipackets; /* total input packets */ + u_long udps_hdrops; /* packet shorter than header */ + u_long udps_badsum; /* checksum error */ + u_long udps_nosum; /* no checksum */ + u_long udps_badlen; /* data length larger than packet */ + u_long udps_noport; /* no socket on port */ + u_long udps_noportbcast; /* of above, arrived as broadcast */ + u_long udps_fullsock; /* not delivered, input socket full */ + u_long udpps_pcbcachemiss; /* input packets missing pcb cache */ + u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */ + /* output statistics: */ + u_long udps_opackets; /* total output packets */ + u_long udps_fastout; /* output packets on fast path */ + /* of no socket on port, arrived as multicast */ + u_long udps_noportmcast; + u_long udps_filtermcast; /* blocked by multicast filter */ +}; + +#ifdef _KERNEL +/* + * In-kernel consumers can use these accessor macros directly to update + * stats. + */ +#define UDPSTAT_ADD(name, val) V_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(u_long)) +#endif + +/* + * Names for UDP sysctl objects. + */ +#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 */ +#define UDPCTL_MAXID 6 + +#define UDPCTL_NAMES { \ + { 0, 0 }, \ + { "checksum", CTLTYPE_INT }, \ + { "stats", CTLTYPE_STRUCT }, \ + { "maxdgram", CTLTYPE_INT }, \ + { "recvspace", CTLTYPE_INT }, \ + { "pcblist", CTLTYPE_STRUCT }, \ +} + +#ifdef _KERNEL +SYSCTL_DECL(_net_inet_udp); + +extern struct pr_usrreqs udp_usrreqs; +VNET_DECLARE(struct inpcbhead, udb); +VNET_DECLARE(struct inpcbinfo, udbinfo); +#define V_udb VNET(udb) +#define V_udbinfo VNET(udbinfo) + +extern u_long udp_sendspace; +extern u_long udp_recvspace; +VNET_DECLARE(struct udpstat, udpstat); +VNET_DECLARE(int, udp_blackhole); +#define V_udpstat VNET(udpstat) +#define V_udp_blackhole VNET(udp_blackhole) +extern int udp_log_in_vain; + +int udp_newudpcb(struct inpcb *); +void udp_discardcb(struct udpcb *); + +void udp_ctlinput(int, struct sockaddr *, void *); +int udp_ctloutput(struct socket *, struct sockopt *); +void udp_init(void); +#ifdef VIMAGE +void udp_destroy(void); +#endif +void udp_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); +#endif + +#endif |