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
|
/*
* Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <string.h>
#include <errno.h>
#include <byteswap.h>
#include <ipxe/dhcp.h>
#include <ipxe/dhcpopts.h>
#include <ipxe/settings.h>
#include <ipxe/device.h>
#include <ipxe/netdevice.h>
/** @file
*
* Network device configuration settings
*
*/
/** Network device named settings */
struct setting mac_setting __setting ( SETTING_NETDEV ) = {
.name = "mac",
.description = "MAC address",
.type = &setting_type_hex,
.tag = NETDEV_SETTING_TAG_MAC,
};
struct setting busid_setting __setting ( SETTING_NETDEV ) = {
.name = "busid",
.description = "Bus ID",
.type = &setting_type_hex,
.tag = NETDEV_SETTING_TAG_BUS_ID,
};
/**
* Check applicability of network device setting
*
* @v settings Settings block
* @v setting Setting
* @ret applies Setting applies within this settings block
*/
static int netdev_applies ( struct settings *settings __unused,
struct setting *setting ) {
return ( IS_NETDEV_SETTING_TAG ( setting->tag ) ||
dhcpopt_applies ( setting->tag ) );
}
/**
* Store value of network device setting
*
* @v settings Settings block
* @v setting Setting to store
* @v data Setting data, or NULL to clear setting
* @v len Length of setting data
* @ret rc Return status code
*/
static int netdev_store ( struct settings *settings, struct setting *setting,
const void *data, size_t len ) {
struct net_device *netdev = container_of ( settings, struct net_device,
settings.settings );
if ( setting_cmp ( setting, &mac_setting ) == 0 ) {
if ( len != netdev->ll_protocol->ll_addr_len )
return -EINVAL;
memcpy ( netdev->ll_addr, data, len );
return 0;
}
if ( setting_cmp ( setting, &busid_setting ) == 0 )
return -ENOTSUP;
return generic_settings_store ( settings, setting, data, len );
}
/**
* Fetch value of network device setting
*
* @v settings Settings block
* @v setting Setting to fetch
* @v data Setting data, or NULL to clear setting
* @v len Length of setting data
* @ret rc Return status code
*/
static int netdev_fetch ( struct settings *settings, struct setting *setting,
void *data, size_t len ) {
struct net_device *netdev = container_of ( settings, struct net_device,
settings.settings );
struct device_description *desc = &netdev->dev->desc;
struct dhcp_netdev_desc dhcp_desc;
if ( setting_cmp ( setting, &mac_setting ) == 0 ) {
if ( len > netdev->ll_protocol->ll_addr_len )
len = netdev->ll_protocol->ll_addr_len;
memcpy ( data, netdev->ll_addr, len );
return netdev->ll_protocol->ll_addr_len;
}
if ( setting_cmp ( setting, &busid_setting ) == 0 ) {
dhcp_desc.type = desc->bus_type;
dhcp_desc.vendor = htons ( desc->vendor );
dhcp_desc.device = htons ( desc->device );
if ( len > sizeof ( dhcp_desc ) )
len = sizeof ( dhcp_desc );
memcpy ( data, &dhcp_desc, len );
return sizeof ( dhcp_desc );
}
return generic_settings_fetch ( settings, setting, data, len );
}
/**
* Clear network device settings
*
* @v settings Settings block
*/
static void netdev_clear ( struct settings *settings ) {
generic_settings_clear ( settings );
}
/** Network device configuration settings operations */
struct settings_operations netdev_settings_operations = {
.applies = netdev_applies,
.store = netdev_store,
.fetch = netdev_fetch,
.clear = netdev_clear,
};
|
