2 * Copyright (c) 1982, 1986, 1990, 1993
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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 $
33 #ifndef _USER_INPCB_H_
34 #define _USER_INPCB_H_
36 #include <user_route.h> /* was <net/route.h> */
41 * Struct inpcb is the ommon structure pcb for the Internet Protocol
44 * Pointers to local and foreign host table entries, local and foreign socket
45 * numbers, and pointers up (to a socket structure) and down (to a
46 * protocol-specific control block) are stored here.
48 LIST_HEAD(inpcbhead, inpcb);
49 LIST_HEAD(inpcbporthead, inpcbport);
52 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
53 * So, AF_INET6 null laddr is also used as AF_INET null laddr, by utilizing
54 * the following structure.
57 uint32_t ia46_pad32[3];
58 struct in_addr ia46_addr4;
62 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. in_conninfo has
63 * some extra padding to accomplish this.
66 uint16_t ie_fport; /* foreign port */
67 uint16_t ie_lport; /* local port */
68 /* protocol dependent part, local and foreign addr */
70 /* foreign host table entry */
71 struct in_addr_4in6 ie46_foreign;
72 struct in6_addr ie6_foreign;
75 /* local host table entry */
76 struct in_addr_4in6 ie46_local;
77 struct in6_addr ie6_local;
79 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4
80 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4
81 #define ie6_faddr ie_dependfaddr.ie6_foreign
82 #define ie6_laddr ie_dependladdr.ie6_local
86 * XXX The defines for inc_* are hacks and should be changed to direct
92 uint16_t inc_pad; /* XXX alignment for in_endpoints */
93 /* protocol dependent part */
94 struct in_endpoints inc_ie;
96 #define inc_isipv6 inc_flags /* temp compatibility */
97 #define inc_fport inc_ie.ie_fport
98 #define inc_lport inc_ie.ie_lport
99 #define inc_faddr inc_ie.ie_faddr
100 #define inc_laddr inc_ie.ie_laddr
101 #define inc6_faddr inc_ie.ie6_faddr
102 #define inc6_laddr inc_ie.ie6_laddr
107 LIST_ENTRY(inpcb) inp_hash; /* hash list */
108 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
109 void *inp_ppcb; /* pointer to per-protocol pcb */
110 struct inpcbinfo *inp_pcbinfo; /* PCB list info */
111 struct socket *inp_socket; /* back pointer to socket */
114 int inp_flags; /* generic IP/datagram flags */
116 u_char inp_vflag; /* IP version flag (v4/v6) */
119 #define INP_IPV6PROTO 0x4 /* opened under IPv6 protocol */
120 #define INP_TIMEWAIT 0x8 /* .. probably doesn't go here */
121 #define INP_ONESBCAST 0x10 /* send all-ones broadcast */
122 #define INP_DROPPED 0x20 /* protocol drop flag */
123 #define INP_SOCKREF 0x40 /* strong socket reference */
124 #define INP_CONN 0x80
125 u_char inp_ip_ttl; /* time to live proto */
126 u_char inp_ip_p; /* protocol proto */
127 u_char inp_ip_minttl; /* minimum TTL or drop */
128 uint32_t inp_ispare1; /* connection id / queue id */
129 void *inp_pspare[2]; /* rtentry / general use */
131 /* Local and foreign ports, local and foreign addr. */
132 struct in_conninfo inp_inc;
134 /* list for this PCB's local port */
135 struct label *inp_label; /* MAC label */
136 struct inpcbpolicy *inp_sp; /* for IPSEC */
138 /* Protocol-dependent part; options. */
140 u_char inp4_ip_tos; /* type of service proto */
141 struct mbuf *inp4_options; /* IP options */
142 struct ip_moptions *inp4_moptions; /* IP multicast options */
144 #define inp_fport inp_inc.inc_fport
145 #define inp_lport inp_inc.inc_lport
146 #define inp_faddr inp_inc.inc_faddr
147 #define inp_laddr inp_inc.inc_laddr
148 #define inp_ip_tos inp_depend4.inp4_ip_tos
149 #define inp_options inp_depend4.inp4_options
150 #define inp_moptions inp_depend4.inp4_moptions
153 struct mbuf *inp6_options;
154 /* IP6 options for outgoing packets */
155 struct ip6_pktopts *inp6_outputopts;
156 /* IP multicast options */
158 struct ip6_moptions *inp6_moptions;
160 /* ICMPv6 code type filter */
161 struct icmp6_filter *inp6_icmp6filt;
162 /* IPV6_CHECKSUM setsockopt */
166 LIST_ENTRY(inpcb) inp_portlist;
167 struct inpcbport *inp_phd; /* head of this list */
168 #define inp_zero_size offsetof(struct inpcb, inp_gencnt)
171 #define in6p_faddr inp_inc.inc6_faddr
172 #define in6p_laddr inp_inc.inc6_laddr
173 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */
174 #define in6p_ip6_nxt inp_ip_p
175 #define in6p_flowinfo inp_flow
176 #define in6p_vflag inp_vflag
177 #define in6p_options inp_depend6.inp6_options
178 #define in6p_outputopts inp_depend6.inp6_outputopts
180 #define in6p_moptions inp_depend6.inp6_moptions
182 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt
183 #define in6p_cksum inp_depend6.inp6_cksum
184 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */
185 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */
186 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */
187 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */
188 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */
191 * The range of the generation count, as used in this implementation, is 9e19.
192 * We would have to create 300 billion connections per second for this number
193 * to roll over in a year. This seems sufficiently unlikely that we simply
194 * don't concern ourselves with that possibility.
198 LIST_ENTRY(inpcbport) phd_hash;
199 struct inpcbhead phd_pcblist;
204 * Global data structure for each high-level protocol (UDP, TCP, ...) in both
205 * IPv4 and IPv6. Holds inpcb lists and information for managing them.
209 * Global list of inpcbs on the protocol.
211 struct inpcbhead *ipi_listhead;
215 * Global hash of inpcbs, hashed by local and foreign addresses and
218 struct inpcbhead *ipi_hashbase;
222 * Global hash of inpcbs, hashed by only local port number.
224 struct inpcbporthead *ipi_porthashbase;
225 u_long ipi_porthashmask;
228 * Fields associated with port lookup and allocation.
230 u_short ipi_lastport;
235 * UMA zone from which inpcbs are allocated for this protocol.
237 struct uma_zone *ipi_zone;
240 * Generation count--incremented each time a connection is allocated
252 #define INP_LOCK_INIT(inp, d, t) \
253 mtx_init(&(inp)->inp_mtx, (d), (t), MTX_DEF | MTX_RECURSE | MTX_DUPOK)
254 #define INP_LOCK_DESTROY(inp) mtx_destroy(&(inp)->inp_mtx)
255 #define INP_LOCK(inp) mtx_lock(&(inp)->inp_mtx)
256 #define INP_UNLOCK(inp) mtx_unlock(&(inp)->inp_mtx)
257 #define INP_LOCK_ASSERT(inp) mtx_assert(&(inp)->inp_mtx, MA_OWNED)
258 #define INP_UNLOCK_ASSERT(inp) mtx_assert(&(inp)->inp_mtx, MA_NOTOWNED)
260 #define INP_INFO_LOCK_INIT(ipi, d) \
261 mtx_init(&(ipi)->ipi_mtx, (d), NULL, MTX_DEF | MTX_RECURSE)
262 #define INP_INFO_LOCK_DESTROY(ipi) mtx_destroy(&(ipi)->ipi_mtx)
263 #define INP_INFO_RLOCK(ipi) mtx_lock(&(ipi)->ipi_mtx)
264 #define INP_INFO_WLOCK(ipi) mtx_lock(&(ipi)->ipi_mtx)
265 #define INP_INFO_RUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_mtx)
266 #define INP_INFO_WUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_mtx)
267 #define INP_INFO_RLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_OWNED)
268 #define INP_INFO_WLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_OWNED)
269 #define INP_INFO_UNLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_NOTOWNED)
271 #define INP_PCBHASH(faddr, lport, fport, mask) \
272 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
273 #define INP_PCBPORTHASH(lport, mask) \
274 (ntohs((lport)) & (mask))
276 /* flags in inp_flags: */
277 #define INP_RECVOPTS 0x01 /* receive incoming IP options */
278 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */
279 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */
280 #define INP_HDRINCL 0x08 /* user supplies entire IP header */
281 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */
282 #define INP_LOWPORT 0x20 /* user wants "low" port binding */
283 #define INP_ANONPORT 0x40 /* port chosen for user */
284 #define INP_RECVIF 0x80 /* receive incoming interface */
285 #define INP_MTUDISC 0x100 /* user can do MTU discovery */
286 #define INP_FAITH 0x200 /* accept FAITH'ed connections */
287 #define INP_RECVTTL 0x400 /* receive incoming IP TTL */
288 #define INP_DONTFRAG 0x800 /* don't fragment packet */
290 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */
292 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */
293 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */
294 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */
295 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */
296 #define IN6P_RTHDR 0x100000 /* receive routing header */
297 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */
298 #define IN6P_TCLASS 0x400000 /* receive traffic class value */
299 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */
300 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */
301 #define IN6P_MTU 0x80000000 /* receive path MTU */
303 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
304 INP_RECVIF|INP_RECVTTL|\
305 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
306 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
307 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\
309 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\
310 IN6P_TCLASS|IN6P_AUTOFLOWLABEL)
312 /* for KAME src sync over BSD*'s */
313 #define IN6P_HIGHPORT INP_HIGHPORT
314 #define IN6P_LOWPORT INP_LOWPORT
315 #define IN6P_ANONPORT INP_ANONPORT
316 #define IN6P_RECVIF INP_RECVIF
317 #define IN6P_MTUDISC INP_MTUDISC
318 #define IN6P_FAITH INP_FAITH
319 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
321 * socket AF version is {newer than,or include}
322 * actual datagram AF version
325 #define INPLOOKUP_WILDCARD 1
326 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
328 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
330 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
332 extern int ipport_reservedhigh;
333 extern int ipport_reservedlow;
334 extern int ipport_lowfirstauto;
335 extern int ipport_lowlastauto;
336 extern int ipport_firstauto;
337 extern int ipport_lastauto;
338 extern int ipport_hifirstauto;
339 extern int ipport_hilastauto;
340 extern struct callout ipport_tick_callout;
342 void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *);
343 int in_pcballoc(struct socket *, struct inpcbinfo *);
344 int in_pcbbind(struct inpcb *, struct sockaddr *, struct ucred *);
345 int in_pcbconnect(struct inpcb *, struct sockaddr *, struct ucred *);
346 void in_pcbdetach(struct inpcb *);
347 void in_pcbdisconnect(struct inpcb *);
348 void in_pcbdrop(struct inpcb *);
349 void in_pcbfree(struct inpcb *);
350 int in_pcbinshash(struct inpcb *);
352 in_pcblookup_local(struct inpcbinfo *,
353 struct in_addr, u_int, int);
355 in_pcblookup_hash(struct inpcbinfo *, struct in_addr, u_int,
356 struct in_addr, u_int, int, struct ifnet *);
357 void in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr,
358 int, struct inpcb *(*)(struct inpcb *, int));
359 void in_pcbrehash(struct inpcb *);
360 void in_pcbsetsolabel(struct socket *so);
361 int in_getpeeraddr(struct socket *so, struct sockaddr **nam);
362 int in_getsockaddr(struct socket *so, struct sockaddr **nam);
363 void in_pcbsosetlabel(struct socket *so);
364 void in_pcbremlists(struct inpcb *inp);
365 void ipport_tick(void *xtp);
368 * Debugging routines compiled in when DDB is present.
370 void db_print_inpcb(struct inpcb *inp, const char *name, int indent);
373 #endif /* !_NETINET_IN_PCB_H_ */