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29 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
33 #ifndef _NETINET_IN_PCB_H_
34 #define _NETINET_IN_PCB_H_
36 #include <sys/queue.h>
37 #include <sys/_lock.h>
38 #include <sys/_mutex.h>
40 #include <net/route.h>
42 #define in6pcb inpcb /* for KAME src sync over BSD*'s */
43 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */
47 * Struct inpcb is the ommon structure pcb for the Internet Protocol
50 * Pointers to local and foreign host table entries, local and foreign socket
51 * numbers, and pointers up (to a socket structure) and down (to a
52 * protocol-specific control block) are stored here.
54 LIST_HEAD(inpcbhead, inpcb);
55 LIST_HEAD(inpcbporthead, inpcbport);
56 typedef u_quad_t inp_gen_t;
59 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
60 * So, AF_INET6 null laddr is also used as AF_INET null laddr, by utilizing
61 * the following structure.
64 u_int32_t ia46_pad32[3];
65 struct in_addr ia46_addr4;
69 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. in_conninfo has
70 * some extra padding to accomplish this.
73 u_int16_t ie_fport; /* foreign port */
74 u_int16_t ie_lport; /* local port */
75 /* protocol dependent part, local and foreign addr */
77 /* foreign host table entry */
78 struct in_addr_4in6 ie46_foreign;
79 struct in6_addr ie6_foreign;
82 /* local host table entry */
83 struct in_addr_4in6 ie46_local;
84 struct in6_addr ie6_local;
86 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4
87 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4
88 #define ie6_faddr ie_dependfaddr.ie6_foreign
89 #define ie6_laddr ie_dependladdr.ie6_local
93 * XXX The defines for inc_* are hacks and should be changed to direct
99 u_int16_t inc_pad; /* XXX alignment for in_endpoints */
100 /* protocol dependent part */
101 struct in_endpoints inc_ie;
103 #define inc_isipv6 inc_flags /* temp compatability */
104 #define inc_fport inc_ie.ie_fport
105 #define inc_lport inc_ie.ie_lport
106 #define inc_faddr inc_ie.ie_faddr
107 #define inc_laddr inc_ie.ie_laddr
108 #define inc6_faddr inc_ie.ie6_faddr
109 #define inc6_laddr inc_ie.ie6_laddr
114 LIST_ENTRY(inpcb) inp_hash; /* hash list */
115 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
118 /* Local and foreign ports, local and foreign addr. */
119 struct in_conninfo inp_inc;
121 void *inp_ppcb; /* pointer to per-protocol pcb */
122 struct inpcbinfo *inp_pcbinfo; /* PCB list info */
123 struct socket *inp_socket; /* back pointer to socket */
124 /* list for this PCB's local port */
125 struct label *inp_label; /* MAC label */
126 int inp_flags; /* generic IP/datagram flags */
128 struct inpcbpolicy *inp_sp; /* for IPSEC */
129 u_char inp_vflag; /* IP version flag (v4/v6) */
132 #define INP_IPV6PROTO 0x4 /* opened under IPv6 protocol */
133 #define INP_TIMEWAIT 0x8 /* .. probably doesn't go here */
134 #define INP_ONESBCAST 0x10 /* send all-ones broadcast */
135 #define INP_DROPPED 0x20 /* protocol drop flag */
136 #define INP_SOCKREF 0x40 /* strong socket reference */
137 u_char inp_ip_ttl; /* time to live proto */
138 u_char inp_ip_p; /* protocol proto */
139 u_char inp_ip_minttl; /* minimum TTL or drop */
141 /* Protocol-dependent part; options. */
143 u_char inp4_ip_tos; /* type of service proto */
144 struct mbuf *inp4_options; /* IP options */
145 struct ip_moptions *inp4_moptions; /* IP multicast options */
147 #define inp_fport inp_inc.inc_fport
148 #define inp_lport inp_inc.inc_lport
149 #define inp_faddr inp_inc.inc_faddr
150 #define inp_laddr inp_inc.inc_laddr
151 #define inp_ip_tos inp_depend4.inp4_ip_tos
152 #define inp_options inp_depend4.inp4_options
153 #define inp_moptions inp_depend4.inp4_moptions
156 struct mbuf *inp6_options;
157 /* IP6 options for outgoing packets */
158 struct ip6_pktopts *inp6_outputopts;
159 /* IP multicast options */
160 struct ip6_moptions *inp6_moptions;
161 /* ICMPv6 code type filter */
162 struct icmp6_filter *inp6_icmp6filt;
163 /* IPV6_CHECKSUM setsockopt */
167 LIST_ENTRY(inpcb) inp_portlist;
168 struct inpcbport *inp_phd; /* head of this list */
169 #define inp_zero_size offsetof(struct inpcb, inp_gencnt)
170 inp_gen_t inp_gencnt; /* generation count of this instance */
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 #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 * Interface exported to userland by various protocols which use inpcbs. Hack
199 * alert -- only define if struct xsocket is in scope.
201 #ifdef _SYS_SOCKETVAR_H_
203 size_t xi_len; /* length of this structure */
205 struct xsocket xi_socket;
206 u_quad_t xi_alignment_hack;
210 size_t xig_len; /* length of this structure */
211 u_int xig_count; /* number of PCBs at this time */
212 inp_gen_t xig_gen; /* generation count at this time */
213 so_gen_t xig_sogen; /* socket generation count at this time */
215 #endif /* _SYS_SOCKETVAR_H_ */
218 LIST_ENTRY(inpcbport) phd_hash;
219 struct inpcbhead phd_pcblist;
224 * Global data structure for each high-level protocol (UDP, TCP, ...) in both
225 * IPv4 and IPv6. Holds inpcb lists and information for managing them.
229 * Global list of inpcbs on the protocol.
231 struct inpcbhead *ipi_listhead;
235 * Global hash of inpcbs, hashed by local and foreign addresses and
238 struct inpcbhead *ipi_hashbase;
242 * Global hash of inpcbs, hashed by only local port number.
244 struct inpcbporthead *ipi_porthashbase;
245 u_long ipi_porthashmask;
248 * Fields associated with port lookup and allocation.
250 u_short ipi_lastport;
255 * UMA zone from which inpcbs are allocated for this protocol.
257 struct uma_zone *ipi_zone;
260 * Generation count--incremented each time a connection is allocated
267 #define INP_LOCK_INIT(inp, d, t) \
268 mtx_init(&(inp)->inp_mtx, (d), (t), MTX_DEF | MTX_RECURSE | MTX_DUPOK)
269 #define INP_LOCK_DESTROY(inp) mtx_destroy(&(inp)->inp_mtx)
270 #define INP_LOCK(inp) mtx_lock(&(inp)->inp_mtx)
271 #define INP_UNLOCK(inp) mtx_unlock(&(inp)->inp_mtx)
272 #define INP_LOCK_ASSERT(inp) mtx_assert(&(inp)->inp_mtx, MA_OWNED)
273 #define INP_UNLOCK_ASSERT(inp) mtx_assert(&(inp)->inp_mtx, MA_NOTOWNED)
275 #define INP_INFO_LOCK_INIT(ipi, d) \
276 mtx_init(&(ipi)->ipi_mtx, (d), NULL, MTX_DEF | MTX_RECURSE)
277 #define INP_INFO_LOCK_DESTROY(ipi) mtx_destroy(&(ipi)->ipi_mtx)
278 #define INP_INFO_RLOCK(ipi) mtx_lock(&(ipi)->ipi_mtx)
279 #define INP_INFO_WLOCK(ipi) mtx_lock(&(ipi)->ipi_mtx)
280 #define INP_INFO_RUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_mtx)
281 #define INP_INFO_WUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_mtx)
282 #define INP_INFO_RLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_OWNED)
283 #define INP_INFO_WLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_OWNED)
284 #define INP_INFO_UNLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_NOTOWNED)
286 #define INP_PCBHASH(faddr, lport, fport, mask) \
287 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
288 #define INP_PCBPORTHASH(lport, mask) \
289 (ntohs((lport)) & (mask))
291 /* flags in inp_flags: */
292 #define INP_RECVOPTS 0x01 /* receive incoming IP options */
293 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */
294 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */
295 #define INP_HDRINCL 0x08 /* user supplies entire IP header */
296 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */
297 #define INP_LOWPORT 0x20 /* user wants "low" port binding */
298 #define INP_ANONPORT 0x40 /* port chosen for user */
299 #define INP_RECVIF 0x80 /* receive incoming interface */
300 #define INP_MTUDISC 0x100 /* user can do MTU discovery */
301 #define INP_FAITH 0x200 /* accept FAITH'ed connections */
302 #define INP_RECVTTL 0x400 /* receive incoming IP TTL */
303 #define INP_DONTFRAG 0x800 /* don't fragment packet */
305 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */
307 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */
308 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */
309 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */
310 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */
311 #define IN6P_RTHDR 0x100000 /* receive routing header */
312 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */
313 #define IN6P_TCLASS 0x400000 /* receive traffic class value */
314 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */
315 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */
316 #define IN6P_MTU 0x80000000 /* receive path MTU */
318 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
319 INP_RECVIF|INP_RECVTTL|\
320 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
321 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
322 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\
324 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\
325 IN6P_TCLASS|IN6P_AUTOFLOWLABEL)
327 /* for KAME src sync over BSD*'s */
328 #define IN6P_HIGHPORT INP_HIGHPORT
329 #define IN6P_LOWPORT INP_LOWPORT
330 #define IN6P_ANONPORT INP_ANONPORT
331 #define IN6P_RECVIF INP_RECVIF
332 #define IN6P_MTUDISC INP_MTUDISC
333 #define IN6P_FAITH INP_FAITH
334 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
336 * socket AF version is {newer than,or include}
337 * actual datagram AF version
340 #define INPLOOKUP_WILDCARD 1
341 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
342 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */
344 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
346 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
349 extern int ipport_reservedhigh;
350 extern int ipport_reservedlow;
351 extern int ipport_lowfirstauto;
352 extern int ipport_lowlastauto;
353 extern int ipport_firstauto;
354 extern int ipport_lastauto;
355 extern int ipport_hifirstauto;
356 extern int ipport_hilastauto;
357 extern struct callout ipport_tick_callout;
359 void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *);
360 int in_pcballoc(struct socket *, struct inpcbinfo *);
361 int in_pcbbind(struct inpcb *, struct sockaddr *, struct ucred *);
362 int in_pcbbind_setup(struct inpcb *, struct sockaddr *, in_addr_t *,
363 u_short *, struct ucred *);
364 int in_pcbconnect(struct inpcb *, struct sockaddr *, struct ucred *);
365 int in_pcbconnect_setup(struct inpcb *, struct sockaddr *, in_addr_t *,
366 u_short *, in_addr_t *, u_short *, struct inpcb **,
368 void in_pcbdetach(struct inpcb *);
369 void in_pcbdisconnect(struct inpcb *);
370 void in_pcbdrop(struct inpcb *);
371 void in_pcbfree(struct inpcb *);
372 int in_pcbinshash(struct inpcb *);
374 in_pcblookup_local(struct inpcbinfo *,
375 struct in_addr, u_int, int);
377 in_pcblookup_hash(struct inpcbinfo *, struct in_addr, u_int,
378 struct in_addr, u_int, int, struct ifnet *);
379 void in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr,
380 int, struct inpcb *(*)(struct inpcb *, int));
381 void in_pcbrehash(struct inpcb *);
382 void in_pcbsetsolabel(struct socket *so);
383 int in_getpeeraddr(struct socket *so, struct sockaddr **nam);
384 int in_getsockaddr(struct socket *so, struct sockaddr **nam);
386 in_sockaddr(in_port_t port, struct in_addr *addr);
387 void in_pcbsosetlabel(struct socket *so);
388 void in_pcbremlists(struct inpcb *inp);
389 void ipport_tick(void *xtp);
392 * Debugging routines compiled in when DDB is present.
394 void db_print_inpcb(struct inpcb *inp, const char *name, int indent);
398 #endif /* !_NETINET_IN_PCB_H_ */