1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* Author: David B. Golub, Carnegie Mellon University
* Date: ll/89
*/
#ifndef _DEVICE_NET_IO_H_
#define _DEVICE_NET_IO_H_
/*
* Utilities for playing with network messages.
*/
#include <mach/machine/vm_types.h>
#include <ipc/ipc_kmsg.h>
#include <kern/macro_help.h>
#include <kern/lock.h>
#include <kern/kalloc.h>
#include <device/if_hdr.h>
#include <device/io_req.h>
#include <device/net_status.h>
struct net_rcv_port;
typedef struct net_rcv_port *net_rcv_port_t;
struct net_hash_entry;
typedef struct net_hash_entry *net_hash_entry_t;
struct net_hash_header;
typedef struct net_hash_header *net_hash_header_t;
/*
* A network packet is wrapped in a kernel message while in
* the kernel.
*/
#define net_kmsg(kmsg) ((net_rcv_msg_t)&(kmsg)->ikm_header)
/*
* Interrupt routines may allocate and free net_kmsgs with these
* functions. net_kmsg_get may return IKM_NULL.
*/
extern ipc_kmsg_t net_kmsg_get(void);
extern void net_kmsg_put(ipc_kmsg_t);
/*
* Network utility routines.
*/
extern void net_ast();
extern void net_packet(struct ifnet *, ipc_kmsg_t, unsigned int, boolean_t);
extern void net_filter(ipc_kmsg_t, ipc_kmsg_queue_t);
extern io_return_t net_getstat(struct ifnet *, dev_flavor_t, dev_status_t,
natural_t *);
extern io_return_t net_write(struct ifnet *, int (*)(), io_req_t);
/*
* Non-interrupt code may allocate and free net_kmsgs with these functions.
*/
extern vm_size_t net_kmsg_size;
extern void net_kmsg_collect (void);
extern void net_io_init(void);
extern void net_thread(void);
#define net_kmsg_alloc() ((ipc_kmsg_t) kalloc(net_kmsg_size))
#define net_kmsg_free(kmsg) kfree((vm_offset_t) (kmsg), net_kmsg_size)
extern unsigned int ntohl(unsigned int);
extern unsigned short int ntohs(unsigned short int);
extern unsigned int htonl(unsigned int);
extern unsigned short int htons(unsigned short int);
unsigned int bpf_hash(int n, const unsigned int *keys);
extern boolean_t
net_do_filter(
net_rcv_port_t infp,
const char * data,
unsigned int data_count,
const char * header); /* CSPF */
extern int
bpf_do_filter(
net_rcv_port_t infp,
char * p,
unsigned int wirelen,
char * header,
unsigned int hlen,
net_hash_entry_t **hash_headpp,
net_hash_entry_t *entpp); /* BPF */
int hash_ent_remove(
struct ifnet *ifp,
net_hash_header_t hp,
int used,
net_hash_entry_t *head,
net_hash_entry_t entp,
queue_entry_t *dead_p);
void net_free_dead_infp(queue_entry_t dead_infp);
void net_free_dead_entp (queue_entry_t dead_entp);
int bpf_validate(
bpf_insn_t f,
int bytes,
bpf_insn_t *match);
int bpf_eq(
bpf_insn_t f1,
bpf_insn_t f2,
int bytes);
int net_add_q_info(ipc_port_t rcv_port);
int bpf_match (
net_hash_header_t hash,
int n_keys,
const unsigned int *keys,
net_hash_entry_t **hash_headpp,
net_hash_entry_t *entpp);
#endif /* _DEVICE_NET_IO_H_ */
|
