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comparison: netwerk/sctp/src/user_inpcb.h

netwerk/sctp/src/user_inpcb.h

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TOR_BUG_9701
changeset 11
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-1:000000000000 0:3d272db1b517
1 /*-
2 * Copyright (c) 1982, 1986, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/netinet/in_pcb.h,v 1.100.2.1 2007/12/07 05:46:08 kmacy Exp $
31 */
32
33 #ifndef _USER_INPCB_H_
34 #define _USER_INPCB_H_
35
36 #include <user_route.h> /* was <net/route.h> */
37
38 #define in6pcb inpcb /* for KAME src sync over BSD*'s */
39 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */
40 struct inpcbpolicy;
41
42 /*
43 * Struct inpcb is the ommon structure pcb for the Internet Protocol
44 * implementation.
45 *
46 * Pointers to local and foreign host table entries, local and foreign socket
47 * numbers, and pointers up (to a socket structure) and down (to a
48 * protocol-specific control block) are stored here.
49 */
50 LIST_HEAD(inpcbhead, inpcb);
51 LIST_HEAD(inpcbporthead, inpcbport);
52
53 /*
54 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
55 * So, AF_INET6 null laddr is also used as AF_INET null laddr, by utilizing
56 * the following structure.
57 */
58 struct in_addr_4in6 {
59 u_int32_t ia46_pad32[3];
60 struct in_addr ia46_addr4;
61 };
62
63 /*
64 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. in_conninfo has
65 * some extra padding to accomplish this.
66 */
67 struct in_endpoints {
68 u_int16_t ie_fport; /* foreign port */
69 u_int16_t ie_lport; /* local port */
70 /* protocol dependent part, local and foreign addr */
71 union {
72 /* foreign host table entry */
73 struct in_addr_4in6 ie46_foreign;
74 struct in6_addr ie6_foreign;
75 } ie_dependfaddr;
76 union {
77 /* local host table entry */
78 struct in_addr_4in6 ie46_local;
79 struct in6_addr ie6_local;
80 } ie_dependladdr;
81 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4
82 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4
83 #define ie6_faddr ie_dependfaddr.ie6_foreign
84 #define ie6_laddr ie_dependladdr.ie6_local
85 };
86
87 /*
88 * XXX The defines for inc_* are hacks and should be changed to direct
89 * references.
90 */
91 struct in_conninfo {
92 u_int8_t inc_flags;
93 u_int8_t inc_len;
94 u_int16_t inc_pad; /* XXX alignment for in_endpoints */
95 /* protocol dependent part */
96 struct in_endpoints inc_ie;
97 };
98 #define inc_isipv6 inc_flags /* temp compatability */
99 #define inc_fport inc_ie.ie_fport
100 #define inc_lport inc_ie.ie_lport
101 #define inc_faddr inc_ie.ie_faddr
102 #define inc_laddr inc_ie.ie_laddr
103 #define inc6_faddr inc_ie.ie6_faddr
104 #define inc6_laddr inc_ie.ie6_laddr
105
106 struct icmp6_filter;
107
108 struct inpcb {
109 LIST_ENTRY(inpcb) inp_hash; /* hash list */
110 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
111 void *inp_ppcb; /* pointer to per-protocol pcb */
112 struct inpcbinfo *inp_pcbinfo; /* PCB list info */
113 struct socket *inp_socket; /* back pointer to socket */
114
115 u_int32_t inp_flow;
116 int inp_flags; /* generic IP/datagram flags */
117
118 u_char inp_vflag; /* IP version flag (v4/v6) */
119 #define INP_IPV4 0x1
120 #define INP_IPV6 0x2
121 #define INP_IPV6PROTO 0x4 /* opened under IPv6 protocol */
122 #define INP_TIMEWAIT 0x8 /* .. probably doesn't go here */
123 #define INP_ONESBCAST 0x10 /* send all-ones broadcast */
124 #define INP_DROPPED 0x20 /* protocol drop flag */
125 #define INP_SOCKREF 0x40 /* strong socket reference */
126 #define INP_CONN 0x80
127 u_char inp_ip_ttl; /* time to live proto */
128 u_char inp_ip_p; /* protocol proto */
129 u_char inp_ip_minttl; /* minimum TTL or drop */
130 uint32_t inp_ispare1; /* connection id / queue id */
131 void *inp_pspare[2]; /* rtentry / general use */
132
133 /* Local and foreign ports, local and foreign addr. */
134 struct in_conninfo inp_inc;
135
136 /* list for this PCB's local port */
137 struct label *inp_label; /* MAC label */
138 struct inpcbpolicy *inp_sp; /* for IPSEC */
139
140 /* Protocol-dependent part; options. */
141 struct {
142 u_char inp4_ip_tos; /* type of service proto */
143 struct mbuf *inp4_options; /* IP options */
144 struct ip_moptions *inp4_moptions; /* IP multicast options */
145 } inp_depend4;
146 #define inp_fport inp_inc.inc_fport
147 #define inp_lport inp_inc.inc_lport
148 #define inp_faddr inp_inc.inc_faddr
149 #define inp_laddr inp_inc.inc_laddr
150 #define inp_ip_tos inp_depend4.inp4_ip_tos
151 #define inp_options inp_depend4.inp4_options
152 #define inp_moptions inp_depend4.inp4_moptions
153 struct {
154 /* IP options */
155 struct mbuf *inp6_options;
156 /* IP6 options for outgoing packets */
157 struct ip6_pktopts *inp6_outputopts;
158 /* IP multicast options */
159 #if 0
160 struct ip6_moptions *inp6_moptions;
161 #endif
162 /* ICMPv6 code type filter */
163 struct icmp6_filter *inp6_icmp6filt;
164 /* IPV6_CHECKSUM setsockopt */
165 int inp6_cksum;
166 short inp6_hops;
167 } inp_depend6;
168 LIST_ENTRY(inpcb) inp_portlist;
169 struct inpcbport *inp_phd; /* head of this list */
170 #define inp_zero_size offsetof(struct inpcb, inp_gencnt)
171 struct mtx inp_mtx;
172
173 #define in6p_faddr inp_inc.inc6_faddr
174 #define in6p_laddr inp_inc.inc6_laddr
175 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */
176 #define in6p_ip6_nxt inp_ip_p
177 #define in6p_flowinfo inp_flow
178 #define in6p_vflag inp_vflag
179 #define in6p_options inp_depend6.inp6_options
180 #define in6p_outputopts inp_depend6.inp6_outputopts
181 #if 0
182 #define in6p_moptions inp_depend6.inp6_moptions
183 #endif
184 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt
185 #define in6p_cksum inp_depend6.inp6_cksum
186 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */
187 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */
188 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */
189 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */
190 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */
191 };
192 /*
193 * The range of the generation count, as used in this implementation, is 9e19.
194 * We would have to create 300 billion connections per second for this number
195 * to roll over in a year. This seems sufficiently unlikely that we simply
196 * don't concern ourselves with that possibility.
197 */
198
199 struct inpcbport {
200 LIST_ENTRY(inpcbport) phd_hash;
201 struct inpcbhead phd_pcblist;
202 u_short phd_port;
203 };
204
205 /*
206 * Global data structure for each high-level protocol (UDP, TCP, ...) in both
207 * IPv4 and IPv6. Holds inpcb lists and information for managing them.
208 */
209 struct inpcbinfo {
210 /*
211 * Global list of inpcbs on the protocol.
212 */
213 struct inpcbhead *ipi_listhead;
214 u_int ipi_count;
215
216 /*
217 * Global hash of inpcbs, hashed by local and foreign addresses and
218 * port numbers.
219 */
220 struct inpcbhead *ipi_hashbase;
221 u_long ipi_hashmask;
222
223 /*
224 * Global hash of inpcbs, hashed by only local port number.
225 */
226 struct inpcbporthead *ipi_porthashbase;
227 u_long ipi_porthashmask;
228
229 /*
230 * Fields associated with port lookup and allocation.
231 */
232 u_short ipi_lastport;
233 u_short ipi_lastlow;
234 u_short ipi_lasthi;
235
236 /*
237 * UMA zone from which inpcbs are allocated for this protocol.
238 */
239 struct uma_zone *ipi_zone;
240
241 /*
242 * Generation count--incremented each time a connection is allocated
243 * or freed.
244 */
245 struct mtx ipi_mtx;
246
247 /*
248 * vimage 1
249 * general use 1
250 */
251 void *ipi_pspare[2];
252 };
253
254 #define INP_LOCK_INIT(inp, d, t) \
255 mtx_init(&(inp)->inp_mtx, (d), (t), MTX_DEF | MTX_RECURSE | MTX_DUPOK)
256 #define INP_LOCK_DESTROY(inp) mtx_destroy(&(inp)->inp_mtx)
257 #define INP_LOCK(inp) mtx_lock(&(inp)->inp_mtx)
258 #define INP_UNLOCK(inp) mtx_unlock(&(inp)->inp_mtx)
259 #define INP_LOCK_ASSERT(inp) mtx_assert(&(inp)->inp_mtx, MA_OWNED)
260 #define INP_UNLOCK_ASSERT(inp) mtx_assert(&(inp)->inp_mtx, MA_NOTOWNED)
261
262 #define INP_INFO_LOCK_INIT(ipi, d) \
263 mtx_init(&(ipi)->ipi_mtx, (d), NULL, MTX_DEF | MTX_RECURSE)
264 #define INP_INFO_LOCK_DESTROY(ipi) mtx_destroy(&(ipi)->ipi_mtx)
265 #define INP_INFO_RLOCK(ipi) mtx_lock(&(ipi)->ipi_mtx)
266 #define INP_INFO_WLOCK(ipi) mtx_lock(&(ipi)->ipi_mtx)
267 #define INP_INFO_RUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_mtx)
268 #define INP_INFO_WUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_mtx)
269 #define INP_INFO_RLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_OWNED)
270 #define INP_INFO_WLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_OWNED)
271 #define INP_INFO_UNLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_NOTOWNED)
272
273 #define INP_PCBHASH(faddr, lport, fport, mask) \
274 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
275 #define INP_PCBPORTHASH(lport, mask) \
276 (ntohs((lport)) & (mask))
277
278 /* flags in inp_flags: */
279 #define INP_RECVOPTS 0x01 /* receive incoming IP options */
280 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */
281 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */
282 #define INP_HDRINCL 0x08 /* user supplies entire IP header */
283 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */
284 #define INP_LOWPORT 0x20 /* user wants "low" port binding */
285 #define INP_ANONPORT 0x40 /* port chosen for user */
286 #define INP_RECVIF 0x80 /* receive incoming interface */
287 #define INP_MTUDISC 0x100 /* user can do MTU discovery */
288 #define INP_FAITH 0x200 /* accept FAITH'ed connections */
289 #define INP_RECVTTL 0x400 /* receive incoming IP TTL */
290 #define INP_DONTFRAG 0x800 /* don't fragment packet */
291
292 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */
293
294 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */
295 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */
296 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */
297 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */
298 #define IN6P_RTHDR 0x100000 /* receive routing header */
299 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */
300 #define IN6P_TCLASS 0x400000 /* receive traffic class value */
301 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */
302 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */
303 #define IN6P_MTU 0x80000000 /* receive path MTU */
304
305 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
306 INP_RECVIF|INP_RECVTTL|\
307 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
308 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
309 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\
310 IN6P_MTU)
311 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\
312 IN6P_TCLASS|IN6P_AUTOFLOWLABEL)
313
314 /* for KAME src sync over BSD*'s */
315 #define IN6P_HIGHPORT INP_HIGHPORT
316 #define IN6P_LOWPORT INP_LOWPORT
317 #define IN6P_ANONPORT INP_ANONPORT
318 #define IN6P_RECVIF INP_RECVIF
319 #define IN6P_MTUDISC INP_MTUDISC
320 #define IN6P_FAITH INP_FAITH
321 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
322 /*
323 * socket AF version is {newer than,or include}
324 * actual datagram AF version
325 */
326
327 #define INPLOOKUP_WILDCARD 1
328 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
329 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */
330
331 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
332
333 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
334
335 /* #ifdef _KERNEL */
336 extern int ipport_reservedhigh;
337 extern int ipport_reservedlow;
338 extern int ipport_lowfirstauto;
339 extern int ipport_lowlastauto;
340 extern int ipport_firstauto;
341 extern int ipport_lastauto;
342 extern int ipport_hifirstauto;
343 extern int ipport_hilastauto;
344 extern struct callout ipport_tick_callout;
345
346 void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *);
347 int in_pcballoc(struct socket *, struct inpcbinfo *);
348 int in_pcbbind(struct inpcb *, struct sockaddr *, struct ucred *);
349 int in_pcbconnect(struct inpcb *, struct sockaddr *, struct ucred *);
350 void in_pcbdetach(struct inpcb *);
351 void in_pcbdisconnect(struct inpcb *);
352 void in_pcbdrop(struct inpcb *);
353 void in_pcbfree(struct inpcb *);
354 int in_pcbinshash(struct inpcb *);
355 struct inpcb *
356 in_pcblookup_local(struct inpcbinfo *,
357 struct in_addr, u_int, int);
358 struct inpcb *
359 in_pcblookup_hash(struct inpcbinfo *, struct in_addr, u_int,
360 struct in_addr, u_int, int, struct ifnet *);
361 void in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr,
362 int, struct inpcb *(*)(struct inpcb *, int));
363 void in_pcbrehash(struct inpcb *);
364 void in_pcbsetsolabel(struct socket *so);
365 int in_getpeeraddr(struct socket *so, struct sockaddr **nam);
366 int in_getsockaddr(struct socket *so, struct sockaddr **nam);
367 void in_pcbsosetlabel(struct socket *so);
368 void in_pcbremlists(struct inpcb *inp);
369 void ipport_tick(void *xtp);
370
371 /*
372 * Debugging routines compiled in when DDB is present.
373 */
374 void db_print_inpcb(struct inpcb *inp, const char *name, int indent);
375
376 /* #endif _KERNEL */
377
378 #endif /* !_NETINET_IN_PCB_H_ */

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