VirtualBox

source: vbox/trunk/src/VBox/Devices/Network/slirp/slirp_state.h@ 49347

Last change on this file since 49347 was 49347, checked in by vboxsync, 11 years ago

NAT: Use RW critsect to protect the handler chain list against concurrent access
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File size: 16.0 KB
Line 
1/** @file
2 * NAT - slirp state/configuration.
3 */
4
5/*
6 * Copyright (C) 2006-2012 Oracle Corporation
7 *
8 * This file is part of VirtualBox Open Source Edition (OSE), as
9 * available from http://www.virtualbox.org. This file is free software;
10 * you can redistribute it and/or modify it under the terms of the GNU
11 * General Public License (GPL) as published by the Free Software
12 * Foundation, in version 2 as it comes in the "COPYING" file of the
13 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15 */
16
17#ifndef ___slirp_state_h
18#define ___slirp_state_h
19
20#include <iprt/req.h>
21#include <iprt/critsect.h>
22
23#define COUNTERS_INIT
24#include "counters.h"
25
26#include "ip_icmp.h"
27#include "dnsproxy/dnsproxy.h"
28
29
30/** Where to start DHCP IP number allocation. */
31#define START_ADDR 15
32
33/** DHCP Lease time. */
34#define LEASE_TIME (24 * 3600)
35
36/*
37 * ARP cache this is naive implementaion of ARP
38 * cache of mapping 4 byte IPv4 address to 6 byte
39 * ethernet one.
40 */
41struct arp_cache_entry
42{
43 uint32_t ip;
44 uint8_t ether[6];
45 LIST_ENTRY(arp_cache_entry) list;
46};
47LIST_HEAD(arp_cache_head, arp_cache_entry);
48
49/** TFTP session entry. */
50struct dns_domain_entry
51{
52 char *dd_pszDomain;
53 LIST_ENTRY(dns_domain_entry) dd_list;
54};
55LIST_HEAD(dns_domain_list_head, dns_domain_entry);
56
57#ifdef VBOX_WITH_DNSMAPPING_IN_HOSTRESOLVER
58typedef struct DNSMAPPINGENTRY
59{
60 /** host name to map.
61 * @note If pszCName isn't null pszPattern won't be used (see alias_dns.c for
62 * details).
63 */
64 char *pszCName;
65 /** Pattern (simple) of hostnames to map to the specified IP. */
66 char *pszPattern;
67 /** The IP Address. */
68 uint32_t u32IpAddress;
69 /** List entry. */
70 LIST_ENTRY(DNSMAPPINGENTRY) MapList;
71} DNSMAPPINGENTRY, *PDNSMAPPINGENTRY;
72typedef LIST_HEAD(DNSMAPPINGLISTHEAD, DNSMAPPINGENTRY) DNSMAPPINGLISTHEAD;
73#endif
74
75struct dns_entry
76{
77 struct in_addr de_addr;
78 TAILQ_ENTRY(dns_entry) de_list;
79};
80TAILQ_HEAD(dns_list_head, dns_entry);
81TAILQ_HEAD(if_queue, mbuf);
82
83struct port_forward_rule
84{
85 uint16_t proto;
86 uint16_t host_port;
87 uint16_t guest_port;
88 struct in_addr guest_addr;
89 struct in_addr bind_ip;
90 uint8_t mac_address[6]; /*need ETH_ALEN here */
91 int activated;
92 struct socket *so;
93 LIST_ENTRY(port_forward_rule) list;
94};
95LIST_HEAD(port_forward_rule_list, port_forward_rule);
96
97
98
99/* forward declaration */
100struct proto_handler;
101
102/** Main state/configuration structure for slirp NAT. */
103typedef struct NATState
104{
105#define PROFILE_COUNTER(name, dsc) STAMPROFILE Stat ## name
106#define COUNTING_COUNTER(name, dsc) STAMCOUNTER Stat ## name
107#include "counters.h"
108 /* Stuff from boot.c */
109 void *pbootp_clients;
110 const char *bootp_filename;
111 /* Stuff from if.c */
112 int if_mtu, if_mru;
113 int if_comp;
114 int if_maxlinkhdr;
115 int if_queued;
116 int if_thresh;
117 /* Stuff from icmp.c */
118 struct icmpstat_t icmpstat;
119 /* Stuff from ip_input.c */
120 struct ipstat_t ipstat;
121 struct ipqhead ipq[IPREASS_NHASH];
122 int maxnipq; /* Administrative limit on # of reass queues*/
123 int maxfragsperpacket; /* Maximum number of IPv4 fragments allowed per packet */
124 int nipq; /* total number of reass queues */
125 uint16_t ip_currid;
126 /* Stuff from mbuf.c */
127 /* Stuff from slirp.c */
128 void *pvUser;
129 uint32_t curtime;
130 uint32_t time_fasttimo;
131 uint32_t last_slowtimo;
132 bool do_slowtimo;
133 bool link_up;
134 struct timeval tt;
135 struct in_addr our_addr;
136 struct in_addr alias_addr;
137 struct in_addr special_addr;
138
139 int tcp_rcvspace;
140 int tcp_sndspace;
141 int socket_rcv;
142 int socket_snd;
143 int soMaxConn;
144#ifdef RT_OS_WINDOWS
145 ULONG (WINAPI * pfGetAdaptersAddresses)(ULONG, ULONG, PVOID, PIP_ADAPTER_ADDRESSES, PULONG);
146#endif
147 struct dns_list_head pDnsList;
148 struct dns_domain_list_head pDomainList;
149 struct in_addr tftp_server;
150 struct in_addr loopback_addr;
151 uint32_t dnsLastUpdate;
152 uint32_t netmask;
153#ifndef VBOX_WITH_NAT_SERVICE
154 uint8_t client_ethaddr[6];
155#endif
156 const uint8_t *slirp_ethaddr;
157 char slirp_hostname[33];
158 bool fPassDomain;
159 struct in_addr bindIP;
160 /* Stuff from tcp_input.c */
161 struct socket tcb;
162
163 struct socket *tcp_last_so;
164 tcp_seq tcp_iss;
165 /* Stuff from tcp_timer.c */
166 struct tcpstat_t tcpstat;
167 uint32_t tcp_now;
168 int tcp_reass_qsize;
169 int tcp_reass_maxqlen;
170 int tcp_reass_maxseg;
171 int tcp_reass_overflows;
172 /* Stuff from tftp.c */
173 void *pvTftpSessions;
174 int cTftpSession;
175 const char *tftp_prefix;
176 /* Stuff from udp.c */
177 struct udpstat_t udpstat;
178 struct socket udb;
179 struct socket *udp_last_so;
180 struct socket icmp_socket;
181 struct icmp_storage icmp_msg_head;
182# ifndef RT_OS_WINDOWS
183 /* counter of sockets needed for allocation enough room to
184 * process sockets with poll/epoll
185 *
186 * NSOCK_INC/DEC should be injected before every
187 * operation on socket queue (tcb, udb)
188 */
189 int nsock;
190# define NSOCK_INC() do {pData->nsock++;} while (0)
191# define NSOCK_DEC() do {pData->nsock--;} while (0)
192# define NSOCK_INC_EX(ex) do {ex->pData->nsock++;} while (0)
193# define NSOCK_DEC_EX(ex) do {ex->pData->nsock--;} while (0)
194# else
195# define NSOCK_INC() do {} while (0)
196# define NSOCK_DEC() do {} while (0)
197# define NSOCK_INC_EX(ex) do {} while (0)
198# define NSOCK_DEC_EX(ex) do {} while (0)
199# endif
200 int cIcmpCacheSize;
201 int iIcmpCacheLimit;
202# ifdef RT_OS_WINDOWS
203 void *pvIcmpBuffer;
204 uint32_t cbIcmpBuffer;
205 /* According MSDN specification IcmpParseReplies
206 * function should be detected at runtime.
207 */
208 long (WINAPI * pfIcmpParseReplies)(void *, long);
209 BOOL (WINAPI * pfIcmpCloseHandle)(HANDLE);
210# endif
211#if defined(RT_OS_WINDOWS)
212# define VBOX_SOCKET_EVENT (pData->phEvents[VBOX_SOCKET_EVENT_INDEX])
213 HANDLE phEvents[VBOX_EVENT_COUNT];
214#endif
215#ifdef zone_mbuf
216# undef zone_mbuf
217#endif
218 uma_zone_t zone_mbuf;
219#ifdef zone_clust
220# undef zone_clust
221#endif
222 uma_zone_t zone_clust;
223#ifdef zone_pack
224# undef zone_pack
225#endif
226 uma_zone_t zone_pack;
227#ifdef zone_jumbop
228# undef zone_jumbop
229#endif
230 uma_zone_t zone_jumbop;
231#ifdef zone_jumbo9
232# undef zone_jumbo9
233#endif
234 uma_zone_t zone_jumbo9;
235#ifdef zone_jumbo16
236# undef zone_jumbo16
237#endif
238 uma_zone_t zone_jumbo16;
239#ifdef zone_ext_refcnt
240# undef zone_ext_refcnt
241 int nmbclusters; /* limits number of mbuf clusters */
242 int nmbjumbop; /* limits number of page size jumbo clusters */
243 int nmbjumbo9; /* limits number of 9k jumbo clusters */
244 int nmbjumbo16; /* limits number of 16k jumbo clusters */
245 struct mbstat mbstat;
246#endif
247 uma_zone_t zone_ext_refcnt;
248 bool fUseHostResolver;
249 /** Flag whether using the host resolver mode is permanent
250 * because the user configured it that way. */
251 bool fUseHostResolverPermanent;
252 /* from dnsproxy/dnsproxy.h*/
253 unsigned int authoritative_port;
254 unsigned int authoritative_timeout;
255 unsigned int recursive_port;
256 unsigned int recursive_timeout;
257 unsigned int stats_timeout;
258 unsigned int port;
259
260 unsigned long active_queries;
261 unsigned long all_queries;
262 unsigned long authoritative_queries;
263 unsigned long recursive_queries;
264 unsigned long removed_queries;
265 unsigned long dropped_queries;
266 unsigned long answered_queries;
267 unsigned long dropped_answers;
268 unsigned long late_answers;
269 unsigned long hash_collisions;
270 /*dnsproxy/dnsproxy.c*/
271 unsigned short queryid;
272 struct sockaddr_in authoritative_addr;
273 struct sockaddr_in recursive_addr;
274 int sock_query;
275 int sock_answer;
276 /* dnsproxy/hash.c */
277#define HASHSIZE 10
278#define HASH(id) (id & ((1 << HASHSIZE) - 1))
279 struct request *request_hash[1 << HASHSIZE];
280 /* this field control behaviour of DHCP server */
281 bool fUseDnsProxy;
282
283 LIST_HEAD(RT_NOTHING, libalias) instancehead;
284 int i32AliasMode;
285 struct libalias *proxy_alias;
286 struct libalias *dns_alias;
287 LIST_HEAD(handler_chain, proto_handler) handler_chain;
288 /** Critical R/W section to protect the handler chain list. */
289 RTCRITSECTRW CsRwHandlerChain;
290 struct port_forward_rule_list port_forward_rule_head;
291 int cRedirectionsActive;
292 int cRedirectionsStored;
293 struct arp_cache_head arp_cache;
294 /* libalis modules' handlers*/
295 struct proto_handler *ftp_module;
296 struct proto_handler *nbt_module;
297 struct proto_handler *dns_module;
298#ifdef VBOX_WITH_NAT_SEND2HOME
299 /* array of home addresses */
300 struct sockaddr_in *pInSockAddrHomeAddress;
301 /* size of pInSockAddrHomeAddress in elements */
302 int cInHomeAddressSize;
303#endif
304#ifdef VBOX_WITH_DNSMAPPING_IN_HOSTRESOLVER
305 DNSMAPPINGLISTHEAD DNSMapHead;
306#endif
307} NATState;
308
309
310/** Default IP time to live. */
311#define ip_defttl IPDEFTTL
312
313/** Number of permanent buffers in mbuf. */
314#define mbuf_thresh 30
315
316/** Use a fixed time before sending keepalive. */
317#define tcp_keepidle TCPTV_KEEP_IDLE
318
319/** Use a fixed interval between keepalive. */
320#define tcp_keepintvl TCPTV_KEEPINTVL
321
322/** Maximum idle time before timing out a connection. */
323#define tcp_maxidle (TCPTV_KEEPCNT * tcp_keepintvl)
324
325/** Default TCP socket options. */
326#define so_options DO_KEEPALIVE
327
328/** Default TCP MSS value. */
329#define tcp_mssdflt TCP_MSS
330
331/** Default TCP round trip time. */
332#define tcp_rttdflt (TCPTV_SRTTDFLT / PR_SLOWHZ)
333
334/** Enable RFC1323 performance enhancements.
335 * @todo check if it really works, it was turned off before. */
336#define tcp_do_rfc1323 1
337
338/** TCP receive buffer size. */
339#define tcp_rcvspace pData->tcp_rcvspace
340
341/** TCP receive buffer size. */
342#define tcp_sndspace pData->tcp_sndspace
343
344/* TCP duplicate ACK retransmit threshold. */
345#define tcprexmtthresh 3
346
347
348#define bootp_filename pData->bootp_filename
349
350#define if_mtu pData->if_mtu
351#define if_mru pData->if_mru
352#define if_comp pData->if_comp
353#define if_maxlinkhdr pData->if_maxlinkhdr
354#define if_queued pData->if_queued
355#define if_thresh pData->if_thresh
356
357#define icmpstat pData->icmpstat
358
359#define ipstat pData->ipstat
360#define ipq pData->ipq
361#define ip_currid pData->ip_currid
362
363#define mbuf_alloced pData->mbuf_alloced
364#define mbuf_max pData->mbuf_max
365#define msize pData->msize
366#define m_freelist pData->m_freelist
367#define m_usedlist pData->m_usedlist
368
369#define curtime pData->curtime
370#define time_fasttimo pData->time_fasttimo
371#define last_slowtimo pData->last_slowtimo
372#define do_slowtimo pData->do_slowtimo
373#define link_up pData->link_up
374#define cUsers pData->cUsers
375#define tt pData->tt
376#define our_addr pData->our_addr
377#ifndef VBOX_SLIRP_ALIAS
378# define alias_addr pData->alias_addr
379#else
380# define handler_chain pData->handler_chain
381#endif
382#define dns_addr pData->dns_addr
383#define loopback_addr pData->loopback_addr
384#define client_ethaddr pData->client_ethaddr
385#define slirp_hostname pData->slirp_hostname
386
387#define tcb pData->tcb
388#define tcp_last_so pData->tcp_last_so
389#define tcp_iss pData->tcp_iss
390
391#define tcpstat pData->tcpstat
392#define tcp_now pData->tcp_now
393
394#define tftp_prefix pData->tftp_prefix
395
396#define udpstat pData->udpstat
397#define udb pData->udb
398#define udp_last_so pData->udp_last_so
399
400#define maxfragsperpacket pData->maxfragsperpacket
401#define maxnipq pData->maxnipq
402#define nipq pData->nipq
403
404#define tcp_reass_qsize pData->tcp_reass_qsize
405#define tcp_reass_maxqlen pData->tcp_reass_maxqlen
406#define tcp_reass_maxseg pData->tcp_reass_maxseg
407#define tcp_reass_overflows pData->tcp_reass_overflows
408
409#define queue_tcp_label tcb
410#define queue_udp_label udb
411#define VBOX_X2(x) x
412#define VBOX_X(x) VBOX_X2(x)
413
414#if 1
415
416# define QSOCKET_LOCK(queue) do {} while (0)
417# define QSOCKET_UNLOCK(queue) do {} while (0)
418# define QSOCKET_LOCK_CREATE(queue) do {} while (0)
419# define QSOCKET_LOCK_DESTROY(queue) do {} while (0)
420# define QSOCKET_FOREACH(so, sonext, label) \
421 for ((so) = VBOX_X2(queue_ ## label ## _label).so_next; \
422 (so) != &(VBOX_X2(queue_ ## label ## _label)); \
423 (so) = (sonext)) \
424 { \
425 (sonext) = (so)->so_next; \
426 Log2(("%s:%d Processing so:%R[natsock]\n", __FUNCTION__, __LINE__, (so)));
427# define CONTINUE(label) continue
428# define CONTINUE_NO_UNLOCK(label) continue
429# define LOOP_LABEL(label, so, sonext) /* empty*/
430# define DO_TCP_OUTPUT(data, sotcb) tcp_output((data), (sotcb))
431# define DO_TCP_INPUT(data, mbuf, size, so) tcp_input((data), (mbuf), (size), (so))
432# define DO_TCP_CONNECT(data, so) tcp_connect((data), (so))
433# define DO_SOREAD(ret, data, so, ifclose) \
434 do { \
435 (ret) = soread((data), (so), (ifclose)); \
436 } while(0)
437# define DO_SOWRITE(ret, data, so) \
438 do { \
439 (ret) = sowrite((data), (so)); \
440 } while(0)
441# define DO_SORECFROM(data, so) sorecvfrom((data), (so))
442# define SOLOOKUP(so, label, src, sport, dst, dport) \
443 do { \
444 (so) = solookup(&VBOX_X2(queue_ ## label ## _label), (src), (sport), (dst), (dport)); \
445 } while (0)
446# define DO_UDP_DETACH(data, so, ignored) udp_detach((data), (so))
447
448#endif
449
450#define TCP_OUTPUT(data, sotcb) DO_TCP_OUTPUT((data), (sotcb))
451#define TCP_INPUT(data, mbuf, size, so) DO_TCP_INPUT((data), (mbuf), (size), (so))
452#define TCP_CONNECT(data, so) DO_TCP_CONNECT((data), (so))
453#define SOREAD(ret, data, so, ifclose) DO_SOREAD((ret), (data), (so), (ifclose))
454#define SOWRITE(ret, data, so) DO_SOWRITE((ret), (data), (so))
455#define SORECVFROM(data, so) DO_SORECFROM((data), (so))
456#define UDP_DETACH(data, so, so_next) DO_UDP_DETACH((data), (so), (so_next))
457
458/* dnsproxy/dnsproxy.c */
459#define authoritative_port pData->authoritative_port
460#define authoritative_timeout pData->authoritative_timeout
461#define recursive_port pData->recursive_port
462#define recursive_timeout pData->recursive_timeout
463#define stats_timeout pData->stats_timeout
464/* dnsproxy/hash.c */
465#define dns_port pData->port
466#define request_hash pData->request_hash
467#define hash_collisions pData->hash_collisions
468#define active_queries pData->active_queries
469#define all_queries pData->all_queries
470#define authoritative_queries pData->authoritative_queries
471#define recursive_queries pData->recursive_queries
472#define removed_queries pData->removed_queries
473#define dropped_queries pData->dropped_queries
474#define answered_queries pData->answered_queries
475#define dropped_answers pData->dropped_answers
476#define late_answers pData->late_answers
477
478/* dnsproxy/dnsproxy.c */
479#define queryid pData->queryid
480#define authoritative_addr pData->authoritative_addr
481#define recursive_addr pData->recursive_addr
482#define sock_query pData->sock_query
483#define sock_answer pData->sock_answer
484
485#define instancehead pData->instancehead
486
487#define nmbclusters pData->nmbclusters
488#define nmbjumbop pData->nmbjumbop
489#define nmbjumbo9 pData->nmbjumbo9
490#define nmbjumbo16 pData->nmbjumbo16
491#define mbstat pData->mbstat
492#include "ext.h"
493#undef zone_mbuf
494#undef zone_clust
495#undef zone_pack
496#undef zone_jumbop
497#undef zone_jumbo9
498#undef zone_jumbo16
499#undef zone_ext_refcnt
500static inline uma_zone_t slirp_zone_pack(PNATState pData)
501{
502 return pData->zone_pack;
503}
504static inline uma_zone_t slirp_zone_jumbop(PNATState pData)
505{
506 return pData->zone_jumbop;
507}
508static inline uma_zone_t slirp_zone_jumbo9(PNATState pData)
509{
510 return pData->zone_jumbo9;
511}
512static inline uma_zone_t slirp_zone_jumbo16(PNATState pData)
513{
514 return pData->zone_jumbo16;
515}
516static inline uma_zone_t slirp_zone_ext_refcnt(PNATState pData)
517{
518 return pData->zone_ext_refcnt;
519}
520static inline uma_zone_t slirp_zone_mbuf(PNATState pData)
521{
522 return pData->zone_mbuf;
523}
524static inline uma_zone_t slirp_zone_clust(PNATState pData)
525{
526 return pData->zone_clust;
527}
528#ifndef VBOX_SLIRP_BSD
529# define m_adj(m, len) m_adj(pData, (m), (len))
530#endif
531
532#endif /* !___slirp_state_h */
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