Subversion Repositories HelenOS

Rev

Rev 4350 | Rev 4558 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
3912 mejdrech 1
/*
2
 * Copyright (c) 2009 Lukas Mejdrech
3
 * 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
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
/** @addtogroup net_nil
30
 *  @{
31
 */
32
 
33
/** @file
34
 *  Internetwork layer services - network interface layer service type translation.
35
 */
36
 
37
#ifndef __NET_PROTOCOL_MAP_H__
38
#define __NET_PROTOCOL_MAP_H__
39
 
40
#include <ipc/services.h>
41
 
4075 mejdrech 42
#include "ethernet_lsap.h"
3912 mejdrech 43
#include "ethernet_protocols.h"
4243 mejdrech 44
#include "hardware.h"
3912 mejdrech 45
 
46
/** Maps the internetwork layer service to the network interface layer type.
47
 *  @param nil Network interface layer service. Input parameter.
48
 *  @param il Internetwork layer service. Input parameter.
49
 *  @returns Network interface layer type of the internetworking layer service.
50
 *  @returns 0 if mapping is not found.
51
 */
52
static inline int protocol_map( services_t nil, services_t il ){
53
    switch( nil ){
54
        case SERVICE_ETHERNET:
4351 mejdrech 55
        case SERVICE_DP8390:
3912 mejdrech 56
            switch( il ){
57
                case SERVICE_IP:
58
                    return ETH_P_IP;
59
                case SERVICE_ARP:
60
                    return ETH_P_ARP;
61
                default:
62
                    return 0;
63
            }
64
        default:
65
            return 0;
66
    }
67
}
68
 
69
/** Maps the network interface layer type to the internetwork layer service.
70
 *  @param nil Network interface layer service. Input parameter.
71
 *  @param protocol Network interface layer type. Input parameter.
72
 *  @returns Internetwork layer service of the network interface layer type.
73
 *  @returns 0 if mapping is not found.
74
 */
75
static inline services_t protocol_unmap( services_t nil, int protocol ){
76
    switch( nil ){
77
        case SERVICE_ETHERNET:
4351 mejdrech 78
        case SERVICE_DP8390:
3912 mejdrech 79
            switch( protocol ){
80
                case ETH_P_IP:
81
                    return SERVICE_IP;
82
                case ETH_P_ARP:
83
                    return SERVICE_ARP;
84
                default:
85
                    return 0;
86
            }
87
        default:
88
            return 0;
89
    }
90
}
91
 
4075 mejdrech 92
/** Maps the link service access point identifier to the Ethernet protocol identifier.
93
 *  @param lsap Link service access point identifier. Input parameter.
94
 *  @returns Ethernet protocol identifier of the link service access point identifier.
95
 *  @returns ETH_LSAP_NULL if mapping is not found.
96
 */
97
static inline int lsap_map( int lsap ){
98
    switch( lsap ){
99
        case ETH_LSAP_IP:
100
            return ETH_P_IP;
101
        case ETH_LSAP_ARP:
102
            return ETH_P_ARP;
103
        default:
104
            return ETH_LSAP_NULL;
105
    }
106
}
107
 
4350 mejdrech 108
/** Maps the network interface layer services to the hardware types.
109
 *  @param nil The network interface service. Input parameter.
110
 *  @returns The hardware type of the network interface service.
111
 *  @returns 0 if mapping is not found.
4243 mejdrech 112
 */
113
static inline int hardware_map( services_t nil ){
114
    switch( nil ){
115
        case SERVICE_ETHERNET:
4261 mejdrech 116
        case SERVICE_DP8390:
4243 mejdrech 117
            return HW_ETHER;
118
        default:
119
            return 0;
120
    }
121
}
122
 
3912 mejdrech 123
#endif
124
 
125
/** @}
126
 */