in_pcb.h (c3229e05a368643ab2e7e7c210b40586d041ba04) in_pcb.h (3d4d47f39858441d8b8625898e74563f7b60e2b5)
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

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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
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

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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
34 * $Id: in_pcb.h,v 1.22 1997/08/16 19:15:36 wollman Exp $
34 * $Id: in_pcb.h,v 1.23 1998/01/27 09:15:04 davidg Exp $
35 */
36
37#ifndef _NETINET_IN_PCB_H_
38#define _NETINET_IN_PCB_H_
39
40#include <sys/queue.h>
41
42/*
43 * Common structure pcb for internet protocol implementation.
44 * Here are stored pointers to local and foreign host table
45 * entries, local and foreign socket numbers, and pointers
46 * up (to a socket structure) and down (to a protocol-specific)
47 * control block.
48 */
49LIST_HEAD(inpcbhead, inpcb);
50LIST_HEAD(inpcbporthead, inpcbport);
51
35 */
36
37#ifndef _NETINET_IN_PCB_H_
38#define _NETINET_IN_PCB_H_
39
40#include <sys/queue.h>
41
42/*
43 * Common structure pcb for internet protocol implementation.
44 * Here are stored pointers to local and foreign host table
45 * entries, local and foreign socket numbers, and pointers
46 * up (to a socket structure) and down (to a protocol-specific)
47 * control block.
48 */
49LIST_HEAD(inpcbhead, inpcb);
50LIST_HEAD(inpcbporthead, inpcbport);
51
52/*
53 * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS
54 * of the structure. Therefore, it is important that the members in
55 * that position not contain any information which is required to be
56 * stable.
57 */
52struct inpcb {
53 LIST_ENTRY(inpcb) inp_hash; /* hash list */
54 struct in_addr inp_faddr; /* foreign host table entry */
55 struct in_addr inp_laddr; /* local host table entry */
56 u_short inp_fport; /* foreign port */
57 u_short inp_lport; /* local port */
58 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
59 caddr_t inp_ppcb; /* pointer to per-protocol pcb */

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64 int inp_flags; /* generic IP/datagram flags */
65 u_char inp_ip_tos; /* type of service proto */
66 u_char inp_ip_ttl; /* time to live proto */
67 u_char inp_ip_p; /* protocol proto */
68 u_char pad[1]; /* alignment */
69 struct ip_moptions *inp_moptions; /* IP multicast options */
70 LIST_ENTRY(inpcb) inp_portlist; /* list for this PCB's local port */
71 struct inpcbport *inp_phd; /* head of list for this PCB's local port */
58struct inpcb {
59 LIST_ENTRY(inpcb) inp_hash; /* hash list */
60 struct in_addr inp_faddr; /* foreign host table entry */
61 struct in_addr inp_laddr; /* local host table entry */
62 u_short inp_fport; /* foreign port */
63 u_short inp_lport; /* local port */
64 LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */
65 caddr_t inp_ppcb; /* pointer to per-protocol pcb */

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70 int inp_flags; /* generic IP/datagram flags */
71 u_char inp_ip_tos; /* type of service proto */
72 u_char inp_ip_ttl; /* time to live proto */
73 u_char inp_ip_p; /* protocol proto */
74 u_char pad[1]; /* alignment */
75 struct ip_moptions *inp_moptions; /* IP multicast options */
76 LIST_ENTRY(inpcb) inp_portlist; /* list for this PCB's local port */
77 struct inpcbport *inp_phd; /* head of list for this PCB's local port */
78 u_quad_t inp_gencnt; /* generation count of this instance */
72};
79};
80/*
81 * The range of the generation count, as used in this implementation,
82 * is 9e19. We would have to create 300 billion connections per
83 * second for this number to roll over in a year. This seems sufficiently
84 * unlikely that we simply don't concern ourselves with that possibility.
85 */
73
74struct inpcbport {
75 LIST_ENTRY(inpcbport) phd_hash;
76 struct inpcbhead phd_pcblist;
77 u_short phd_port;
78};
79
86
87struct inpcbport {
88 LIST_ENTRY(inpcbport) phd_hash;
89 struct inpcbhead phd_pcblist;
90 u_short phd_port;
91};
92
80struct inpcbinfo {
81 struct inpcbhead *hashbase;
82 unsigned long hashmask;
83 struct inpcbporthead *porthashbase;
84 unsigned long porthashmask;
85 struct inpcbhead *listhead;
86 unsigned short lastport;
87 unsigned short lastlow;
88 unsigned short lasthi;
93struct inpcbinfo { /* XXX documentation, prefixes */
94 struct inpcbhead *hashbase;
95 u_long hashmask;
96 struct inpcbporthead *porthashbase;
97 u_long porthashmask;
98 struct inpcbhead *listhead;
99 u_short lastport;
100 u_short lastlow;
101 u_short lasthi;
102 struct vm_zone *ipi_zone; /* zone to allocate pcbs from */
103 u_int ipi_count; /* number of pcbs in this list */
104 u_quad_t ipi_gencnt; /* current generation count */
89};
90
91#define INP_PCBHASH(faddr, lport, fport, mask) \
92 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
93#define INP_PCBPORTHASH(lport, mask) \
94 (ntohs((lport)) & (mask))
95
96/* flags in inp_flags: */

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126struct inpcb *
127 in_pcblookup_hash __P((struct inpcbinfo *,
128 struct in_addr, u_int, struct in_addr, u_int, int));
129void in_pcbnotify __P((struct inpcbhead *, struct sockaddr *,
130 u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
131void in_pcbrehash __P((struct inpcb *));
132int in_setpeeraddr __P((struct socket *so, struct sockaddr **nam));
133int in_setsockaddr __P((struct socket *so, struct sockaddr **nam));
105};
106
107#define INP_PCBHASH(faddr, lport, fport, mask) \
108 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
109#define INP_PCBPORTHASH(lport, mask) \
110 (ntohs((lport)) & (mask))
111
112/* flags in inp_flags: */

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142struct inpcb *
143 in_pcblookup_hash __P((struct inpcbinfo *,
144 struct in_addr, u_int, struct in_addr, u_int, int));
145void in_pcbnotify __P((struct inpcbhead *, struct sockaddr *,
146 u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
147void in_pcbrehash __P((struct inpcb *));
148int in_setpeeraddr __P((struct socket *so, struct sockaddr **nam));
149int in_setsockaddr __P((struct socket *so, struct sockaddr **nam));
150
134#endif
135
136#endif
151#endif
152
153#endif