bc29160df3
Vnet modules and protocol domains may now register destructor functions to clean up and release per-module state. The destructor mechanisms can be triggered by invoking "vimage -d", or a future equivalent command which will be provided via the new jail framework. While this patch introduces numerous placeholder destructor functions, many of those are currently incomplete, thus leaking memory or (even worse) failing to stop all running timers. Many of such issues are already known and will be incrementaly fixed over the next weeks in smaller incremental commits. Apart from introducing new fields in structs ifnet, domain, protosw and vnet_net, which requires the kernel and modules to be rebuilt, this change should have no impact on nooptions VIMAGE builds, since vnet destructors can only be called in VIMAGE kernels. Moreover, destructor functions should be in general compiled in only in options VIMAGE builds, except for kernel modules which can be safely kldunloaded at run time. Bump __FreeBSD_version to 800097. Reviewed by: bz, julian Approved by: rwatson, kib (re), julian (mentor)
142 lines
4.7 KiB
C
142 lines
4.7 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)udp_var.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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#ifndef _NETINET_UDP_VAR_H_
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#define _NETINET_UDP_VAR_H_
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/*
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* UDP kernel structures and variables.
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*/
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struct udpiphdr {
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struct ipovly ui_i; /* overlaid ip structure */
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struct udphdr ui_u; /* udp header */
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};
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#define ui_x1 ui_i.ih_x1
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#define ui_pr ui_i.ih_pr
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#define ui_len ui_i.ih_len
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#define ui_src ui_i.ih_src
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#define ui_dst ui_i.ih_dst
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#define ui_sport ui_u.uh_sport
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#define ui_dport ui_u.uh_dport
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#define ui_ulen ui_u.uh_ulen
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#define ui_sum ui_u.uh_sum
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typedef void(*udp_tun_func_t)(struct mbuf *, int off, struct inpcb *);
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/*
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* UDP control block; one per udp.
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*/
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struct udpcb {
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udp_tun_func_t u_tun_func; /* UDP kernel tunneling callback. */
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u_int u_flags; /* Generic UDP flags. */
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};
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#define intoudpcb(ip) ((struct udpcb *)(ip)->inp_ppcb)
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#define sotoudpcb(so) (intoudpcb(sotoinpcb(so)))
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struct udpstat {
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/* input statistics: */
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u_long udps_ipackets; /* total input packets */
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u_long udps_hdrops; /* packet shorter than header */
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u_long udps_badsum; /* checksum error */
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u_long udps_nosum; /* no checksum */
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u_long udps_badlen; /* data length larger than packet */
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u_long udps_noport; /* no socket on port */
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u_long udps_noportbcast; /* of above, arrived as broadcast */
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u_long udps_fullsock; /* not delivered, input socket full */
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u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
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u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */
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/* output statistics: */
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u_long udps_opackets; /* total output packets */
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u_long udps_fastout; /* output packets on fast path */
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/* of no socket on port, arrived as multicast */
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u_long udps_noportmcast;
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u_long udps_filtermcast; /* blocked by multicast filter */
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};
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#ifdef _KERNEL
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#define UDPSTAT_ADD(name, val) V_udpstat.name += (val)
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#define UDPSTAT_INC(name) UDPSTAT_ADD(name, 1)
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#endif
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/*
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* Names for UDP sysctl objects.
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*/
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#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
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#define UDPCTL_STATS 2 /* statistics (read-only) */
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#define UDPCTL_MAXDGRAM 3 /* max datagram size */
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#define UDPCTL_RECVSPACE 4 /* default receive buffer space */
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#define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
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#define UDPCTL_MAXID 6
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#define UDPCTL_NAMES { \
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{ 0, 0 }, \
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{ "checksum", CTLTYPE_INT }, \
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{ "stats", CTLTYPE_STRUCT }, \
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{ "maxdgram", CTLTYPE_INT }, \
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{ "recvspace", CTLTYPE_INT }, \
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{ "pcblist", CTLTYPE_STRUCT }, \
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}
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#ifdef _KERNEL
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SYSCTL_DECL(_net_inet_udp);
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extern struct pr_usrreqs udp_usrreqs;
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#ifdef VIMAGE_GLOBALS
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extern struct inpcbhead udb;
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extern struct inpcbinfo udbinfo;
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extern struct udpstat udpstat;
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extern int udp_blackhole;
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#endif
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extern u_long udp_sendspace;
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extern u_long udp_recvspace;
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extern int udp_log_in_vain;
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int udp_newudpcb(struct inpcb *);
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void udp_discardcb(struct udpcb *);
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void udp_ctlinput(int, struct sockaddr *, void *);
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void udp_init(void);
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#ifdef VIMAGE
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void udp_destroy(void);
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#endif
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void udp_input(struct mbuf *, int);
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struct inpcb *udp_notify(struct inpcb *inp, int errno);
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int udp_shutdown(struct socket *so);
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int udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f);
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#endif
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#endif
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