1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1982, 1986, 1990, 1993
5 * The Regents of the University of California.
6 * Copyright (c) 2010-2011 Juniper Networks, Inc.
7 * All rights reserved.
8 *
9 * Portions of this software were developed by Robert N. M. Watson under
10 * contract to Juniper Networks, Inc.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef _NETINET_IN_PCB_VAR_H_
38#define _NETINET_IN_PCB_VAR_H_
39
40/*
41 * Definitions shared between netinet/in_pcb.c and netinet6/in6_pcb.c
42 */
43
44VNET_DECLARE(uint32_t, in_pcbhashseed);
45#define V_in_pcbhashseed VNET(in_pcbhashseed)
46
47void inp_lock(struct inpcb *inp, const inp_lookup_t lock);
48void inp_unlock(struct inpcb *inp, const inp_lookup_t lock);
49int inp_trylock(struct inpcb *inp, const inp_lookup_t lock);
50bool inp_smr_lock(struct inpcb *, const inp_lookup_t);
51int in_pcb_lport(struct inpcb *, struct in_addr *, u_short *,
52 struct ucred *, int);
53int in_pcb_lport_dest(const struct inpcb *inp, struct sockaddr *lsa,
54 u_short *lportp, struct sockaddr *fsa, u_short fport,
55 struct ucred *cred, int lookupflags);
56struct inpcb *in_pcblookup_local(struct inpcbinfo *, struct in_addr, u_short,
57 int, int, struct ucred *);
58int in_pcbinshash(struct inpcb *);
59void in_pcbrehash(struct inpcb *);
60void in_pcbremhash_locked(struct inpcb *);
61
62/*
63 * Load balance groups used for the SO_REUSEPORT_LB socket option. Each group
64 * (or unique address:port combination) can be re-used at most
65 * INPCBLBGROUP_SIZMAX (256) times. The inpcbs are stored in il_inp which
66 * is dynamically resized as processes bind/unbind to that specific group.
67 */
68struct inpcblbgroup {
69 CK_LIST_ENTRY(inpcblbgroup) il_list;
70 LIST_HEAD(, inpcb) il_pending; /* PCBs waiting for listen() */
71 struct epoch_context il_epoch_ctx;
72 struct ucred *il_cred;
73 uint16_t il_lport; /* (c) */
74 u_char il_vflag; /* (c) */
75 uint8_t il_numa_domain;
76 int il_fibnum;
77 union in_dependaddr il_dependladdr; /* (c) */
78#define il_laddr il_dependladdr.id46_addr.ia46_addr4
79#define il6_laddr il_dependladdr.id6_addr
80 uint32_t il_inpsiz; /* max count in il_inp[] (h) */
81 uint32_t il_inpcnt; /* cur count in il_inp[] (h) */
82 uint32_t il_pendcnt; /* cur count in il_pending (h) */
83 struct inpcb *il_inp[]; /* (h) */
84};
85
86#endif /* !_NETINET_IN_PCB_VAR_H_ */