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