Subversion Repositories HelenOS

Rev

Rev 4743 | 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.
4756 mejdrech 47 
 *  @param[in] nil Network interface layer service.
48 
 *  @param[in] il Internetwork layer service.
3912 mejdrech 49 
 *  @returns Network interface layer type of the internetworking layer service.
50 
 *  @returns 0 if mapping is not found.
51 
 */
4558 mejdrech 52 
static inline eth_type_t protocol_map( services_t nil, services_t il ){
3912 mejdrech 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.
4756 mejdrech 70 
 *  @param[in] nil Network interface layer service.
71 
 *  @param[in] protocol Network interface layer type.
3912 mejdrech 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.
4756 mejdrech 93 
 *  @param[in] lsap Link service access point identifier.
4075 mejdrech 94 
 *  @returns Ethernet protocol identifier of the link service access point identifier.
95 
 *  @returns ETH_LSAP_NULL if mapping is not found.
96 
 */
4708 mejdrech 97 
static inline eth_type_t lsap_map( eth_lsap_t lsap ){
4075 mejdrech 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 
 
4743 mejdrech 108 
/** Maps the Ethernet protocol identifier to the link service access point identifier.
4756 mejdrech 109 
 *  @param[in] ethertype Ethernet protocol identifier.
4743 mejdrech 110 
 *  @returns Link service access point identifier.
111 
 *  @returns 0 if mapping is not found.
112 
 */
113 
static inline eth_lsap_t lsap_unmap( eth_type_t ethertype ){
114 
	switch( ethertype ){
115 
		case ETH_P_IP:
116 
			return ETH_LSAP_IP;
117 
		case ETH_P_ARP:
118 
			return ETH_LSAP_ARP;
119 
		default:
120 
			return 0;
121 
	}
122 
}
123 
 
4350 mejdrech 124 
/** Maps the network interface layer services to the hardware types.
4756 mejdrech 125 
 *  @param[in] nil The network interface service.
4350 mejdrech 126 
 *  @returns The hardware type of the network interface service.
127 
 *  @returns 0 if mapping is not found.
4243 mejdrech 128 
 */
4558 mejdrech 129 
static inline hw_type_t hardware_map( services_t nil ){
4243 mejdrech 130 
	switch( nil ){
131 
		case SERVICE_ETHERNET:
4261 mejdrech 132 
		case SERVICE_DP8390:
4243 mejdrech 133 
			return HW_ETHER;
134 
		default:
135 
			return 0;
136 
	}
137 
}
138 
 
3912 mejdrech 139 
#endif
140 
 
141 
/** @}
142 
 */