blob: 50b0a6cc667455b8bf076afb947cc8e388398fa4 (
plain) (
blame)
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
|
This file summarizes information on basic testing of USB functions
provided by gadgets.
1. ACM function
2. ECM function
3. ECM subset function
4. EEM function
1. ACM function
===============
The function is provided by usb_f_acm.ko module.
Function-specific configfs interface
------------------------------------
The function name to use when creating the function directory is "acm".
The ACM function provides just one attribute in its function directory:
port_num
The attribute is read-only.
There can be at most 4 ACM/generic serial/OBEX ports in the system.
Testing the ACM function
------------------------
On the host: cat > /dev/ttyACM<X>
On the device : cat /dev/ttyGS<Y>
then the other way round
On the device: cat > /dev/ttyGS<Y>
On the host: cat /dev/ttyACM<X>
2. ECM function
===============
The function is provided by usb_f_ecm.ko module.
Function-specific configfs interface
------------------------------------
The function name to use when creating the function directory is "ecm".
The ECM function provides these attributes in its function directory:
ifname - network device interface name associated with this
function instance
qmult - queue length multiplier for high and super speed
host_addr - MAC address of host's end of this
Ethernet over USB link
dev_addr - MAC address of device's end of this
Ethernet over USB link
and after creating the functions/ecm.<instance name> they contain default
values: qmult is 5, dev_addr and host_addr are randomly selected.
Except for ifname they can be written to until the function is linked to a
configuration. The ifname is read-only and contains the name of the interface
which was assigned by the net core, e. g. usb0.
Testing the ECM function
------------------------
Configure IP addresses of the device and the host. Then:
On the device: ping <host's IP>
On the host: ping <device's IP>
3. ECM subset function
======================
The function is provided by usb_f_ecm_subset.ko module.
Function-specific configfs interface
------------------------------------
The function name to use when creating the function directory is "geth".
The ECM subset function provides these attributes in its function directory:
ifname - network device interface name associated with this
function instance
qmult - queue length multiplier for high and super speed
host_addr - MAC address of host's end of this
Ethernet over USB link
dev_addr - MAC address of device's end of this
Ethernet over USB link
and after creating the functions/ecm.<instance name> they contain default
values: qmult is 5, dev_addr and host_addr are randomly selected.
Except for ifname they can be written to until the function is linked to a
configuration. The ifname is read-only and contains the name of the interface
which was assigned by the net core, e. g. usb0.
Testing the ECM subset function
-------------------------------
Configure IP addresses of the device and the host. Then:
On the device: ping <host's IP>
On the host: ping <device's IP>
4. EEM function
===============
The function is provided by usb_f_eem.ko module.
Function-specific configfs interface
------------------------------------
The function name to use when creating the function directory is "eem".
The EEM function provides these attributes in its function directory:
ifname - network device interface name associated with this
function instance
qmult - queue length multiplier for high and super speed
host_addr - MAC address of host's end of this
Ethernet over USB link
dev_addr - MAC address of device's end of this
Ethernet over USB link
and after creating the functions/eem.<instance name> they contain default
values: qmult is 5, dev_addr and host_addr are randomly selected.
Except for ifname they can be written to until the function is linked to a
configuration. The ifname is read-only and contains the name of the interface
which was assigned by the net core, e. g. usb0.
Testing the EEM function
------------------------
Configure IP addresses of the device and the host. Then:
On the device: ping <host's IP>
On the host: ping <device's IP>
|
