Correct the FreeBSD attribution on this file.
[dragonfly.git] / sys / net / netisr.h
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1/*
2 * Copyright (c) 1980, 1986, 1989, 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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * @(#)netisr.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/netisr.h,v 1.21.2.5 2002/02/09 23:02:39 luigi Exp $
a29576fc 35 * $DragonFly: src/sys/net/netisr.h,v 1.18 2004/06/27 19:40:14 dillon Exp $
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36 */
37
38#ifndef _NET_NETISR_H_
39#define _NET_NETISR_H_
40
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41#include <sys/msgport.h>
42
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43/*
44 * The networking code runs off software interrupts.
45 *
46 * You can switch into the network by doing splnet() and return by splx().
47 * The software interrupt level for the network is higher than the software
48 * level for the clock (so you can enter the network in routines called
49 * at timeout time).
50 */
51
52/*
53 * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status
54 * word which is used to de-multiplex a single software
55 * interrupt used for scheduling the network code to calls
56 * on the lowest level routine of each protocol.
57 */
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58#define NETISR_RESERVED0 0 /* cannot be used */
59#define NETISR_POLL 1 /* polling callback */
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60#define NETISR_IP 2 /* same as AF_INET */
61#define NETISR_NS 6 /* same as AF_NS */
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62#define NETISR_AARP 15 /* Appletalk ARP */
63#define NETISR_ATALK2 16 /* Appletalk phase 2 */
64#define NETISR_ATALK1 17 /* Appletalk phase 1 */
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65#define NETISR_ARP 18 /* same as AF_LINK */
66#define NETISR_IPX 23 /* same as AF_IPX */
8bde602d 67#define NETISR_USB 25 /* USB soft interrupt */
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68#define NETISR_PPP 27 /* PPP soft interrupt */
69#define NETISR_IPV6 28 /* same as AF_INET6 */
70#define NETISR_NATM 29 /* same as AF_NATM */
71#define NETISR_NETGRAPH 30 /* same as AF_NETGRAPH */
72#define NETISR_POLLMORE 31 /* check if we need more polling */
73
8bde602d 74#define NETISR_MAX 32
ef0fdad1 75
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76TAILQ_HEAD(notifymsglist, netmsg_so_notify);
77
984263bc 78#ifdef _KERNEL
984263bc 79
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80#include <sys/protosw.h>
81
82struct netmsg;
83
b76bed62 84typedef int (*netisr_fn_t)(struct netmsg *);
c1d0003c 85typedef boolean_t (*msg_predicate_fn_t)(struct netmsg *);
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86
87/*
88 * Base class. All net messages must start with the same fields.
89 */
90struct netmsg {
91 struct lwkt_msg nm_lmsg;
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92};
93
94struct netmsg_packet {
95 struct lwkt_msg nm_lmsg;
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96 struct mbuf *nm_packet;
97};
98
99struct netmsg_pr_ctloutput {
100 struct lwkt_msg nm_lmsg;
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101 int (*nm_prfn) (struct socket *, struct sockopt *);
102 struct socket *nm_so;
103 struct sockopt *nm_sopt;
104};
105
106struct netmsg_pr_timeout {
107 struct lwkt_msg nm_lmsg;
b44419cb 108 int (*nm_prfn) (void);
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109};
110
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111struct netmsg_so_notify {
112 struct lwkt_msg nm_lmsg;
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113 msg_predicate_fn_t nm_predicate;
114 struct socket *nm_so;
115 int nm_etype; /* receive or send event */
116 TAILQ_ENTRY(netmsg_so_notify) nm_list;
117};
118
119#define NM_REVENT 0x1 /* event on receive buffer */
120#define NM_SEVENT 0x2 /* event on send buffer */
121
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122/*
123 * for dispatching pr_ functions,
124 * until they can be converted to message-passing
125 */
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126int netmsg_pru_abort(lwkt_msg_t);
127int netmsg_pru_accept(lwkt_msg_t);
128int netmsg_pru_attach(lwkt_msg_t);
129int netmsg_pru_bind(lwkt_msg_t);
130int netmsg_pru_connect(lwkt_msg_t);
131int netmsg_pru_connect2(lwkt_msg_t);
132int netmsg_pru_control(lwkt_msg_t);
133int netmsg_pru_detach(lwkt_msg_t);
134int netmsg_pru_disconnect(lwkt_msg_t);
135int netmsg_pru_listen(lwkt_msg_t);
136int netmsg_pru_peeraddr(lwkt_msg_t);
137int netmsg_pru_rcvd(lwkt_msg_t);
138int netmsg_pru_rcvoob(lwkt_msg_t);
139int netmsg_pru_send(lwkt_msg_t);
140int netmsg_pru_sense(lwkt_msg_t);
141int netmsg_pru_shutdown(lwkt_msg_t);
142int netmsg_pru_sockaddr(lwkt_msg_t);
143
144int netmsg_pru_sopoll(lwkt_msg_t);
145
146int netmsg_pr_ctloutput(lwkt_msg_t);
147int netmsg_pr_timeout(lwkt_msg_t);
148
149int netmsg_so_notify(lwkt_msg_t);
150int netmsg_so_notify_abort(lwkt_msg_t);
0ddb6032 151
bf82f9b7 152typedef lwkt_port_t (*lwkt_portfn_t)(struct mbuf *);
8bde602d 153
8bde602d 154struct netisr {
a29576fc 155 lwkt_port ni_port; /* must be first */
bf82f9b7 156 lwkt_portfn_t ni_mport;
8bde602d 157 netisr_fn_t ni_handler;
a29576fc 158 struct netmsg ni_netmsg; /* for sched_netisr() (no-data) */
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159};
160
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161extern lwkt_port netisr_afree_rport;
162
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163lwkt_port_t cpu0_portfn(struct mbuf *m);
164void netisr_dispatch(int, struct mbuf *);
165int netisr_queue(int, struct mbuf *);
166void netisr_register(int, lwkt_portfn_t, netisr_fn_t);
167int netisr_unregister(int);
dc22b3aa 168int netmsg_put_port(lwkt_port_t, lwkt_msg_t);
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169void netmsg_service_loop(void *arg);
170void schednetisr(int);
984263bc 171
9eeaa8a9 172#endif /* KERNEL */
984263bc 173
bf82f9b7 174#endif /* _NET_NETISR_H_ */