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2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da 
 kernel/Documentation/ABI/testing/sysfs-class-net
....@@ -4,10 +4,13 @@
44 Contact:	netdev@vger.kernel.org
55 Description:
66 		Indicates the name assignment type. Possible values are:
7
-		1: enumerated by the kernel, possibly in an unpredictable way
8
-		2: predictably named by the kernel
9
-		3: named by userspace
10
-		4: renamed
7
+
8
+		== ==========================================================
9
+		1  enumerated by the kernel, possibly in an unpredictable way
10
+		2  predictably named by the kernel
11
+		3  named by userspace
12
+		4  renamed
13
+		== ==========================================================
1114 
1215 What:		/sys/class/net/<iface>/addr_assign_type
1316 Date:		July 2010
....@@ -15,10 +18,13 @@
1518 Contact:	netdev@vger.kernel.org
1619 Description:
1720 		Indicates the address assignment type. Possible values are:
18
-		0: permanent address
19
-		1: randomly generated
20
-		2: stolen from another device
21
-		3: set using dev_set_mac_address
21
+
22
+		== =============================
23
+		0  permanent address
24
+		1  randomly generated
25
+		2  stolen from another device
26
+		3  set using dev_set_mac_address
27
+		== =============================
2228 
2329 What:		/sys/class/net/<iface>/addr_len
2430 Date:		April 2005
....@@ -51,9 +57,12 @@
5157 		Default value 0 does not forward any link local frames.
5258 
5359 		Restricted bits:
54
-		0: 01-80-C2-00-00-00 Bridge Group Address used for STP
55
-		1: 01-80-C2-00-00-01 (MAC Control) 802.3 used for MAC PAUSE
56
-		2: 01-80-C2-00-00-02 (Link Aggregation) 802.3ad
60
+
61
+		== ========================================================
62
+		0  01-80-C2-00-00-00 Bridge Group Address used for STP
63
+		1  01-80-C2-00-00-01 (MAC Control) 802.3 used for MAC PAUSE
64
+		2  01-80-C2-00-00-02 (Link Aggregation) 802.3ad
65
+		== ========================================================
5766 
5867 		Any values not setting these bits can be used. Take special
5968 		care when forwarding control frames e.g. 802.1X-PAE or LLDP.
....@@ -74,8 +83,11 @@
7483 Description:
7584 		Indicates the current physical link state of the interface.
7685 		Posssible values are:
77
-		0: physical link is down
78
-		1: physical link is up
86
+
87
+		== =====================
88
+		0  physical link is down
89
+		1  physical link is up
90
+		== =====================
7991 
8092 		Note: some special devices, e.g: bonding and team drivers will
8193 		allow this attribute to be written to force a link state for
....@@ -90,6 +102,24 @@
90102 		value. This is used to disambiguate interfaces which might be
91103 		stacked (e.g: VLAN interfaces) but still have the same MAC
92104 		address as their parent device.
105
+
106
+What:		/sys/class/net/<iface>/dev_port
107
+Date:		February 2014
108
+KernelVersion:	3.15
109
+Contact:	netdev@vger.kernel.org
110
+Description:
111
+		Indicates the port number of this network device, formatted
112
+		as a decimal value. Some NICs have multiple independent ports
113
+		on the same PCI bus, device and function. This attribute allows
114
+		userspace to distinguish the respective interfaces.
115
+
116
+		Note: some device drivers started to use 'dev_id' for this
117
+		purpose since long before 3.15 and have not adopted the new
118
+		attribute ever since. To query the port number, some tools look
119
+		exclusively at 'dev_port', while others only consult 'dev_id'.
120
+		If a network device has multiple client adapter ports as
121
+		described in the previous paragraph and does not set this
122
+		attribute to its port number, it's a kernel bug.
93123 
94124 What:		/sys/class/net/<iface>/dormant
95125 Date:		March 2006
....@@ -106,18 +136,37 @@
106136 		authentication is performed (e.g: 802.1x). 'link_mode' attribute
107137 		will also reflect the dormant state.
108138 
109
-What:		/sys/clas/net/<iface>/duplex
139
+What:		/sys/class/net/<iface>/testing
140
+Date:		April 2002
141
+KernelVersion:	5.8
142
+Contact:	netdev@vger.kernel.org
143
+Description:
144
+		Indicates whether the interface is under test. Possible
145
+		values are:
146
+
147
+		== =============================
148
+		0  interface is not being tested
149
+		1  interface is being tested
150
+		== =============================
151
+
152
+		When an interface is under test, it cannot be expected
153
+		to pass packets as normal.
154
+
155
+What:		/sys/class/net/<iface>/duplex
110156 Date:		October 2009
111157 KernelVersion:	2.6.33
112158 Contact:	netdev@vger.kernel.org
113159 Description:
114160 		Indicates the interface latest or current duplex value. Possible
115161 		values are:
116
-		half: half duplex
117
-		full: full duplex
162
+
163
+		====  ===========
164
+		half  half duplex
165
+		full  full duplex
166
+		====  ===========
118167 
119168 		Note: This attribute is only valid for interfaces that implement
120
-		the ethtool get_settings method (mostly Ethernet).
169
+		the ethtool get_link_ksettings method (mostly Ethernet).
121170 
122171 What:		/sys/class/net/<iface>/flags
123172 Date:		April 2005
....@@ -165,8 +214,11 @@
165214 		Indicates the interface link mode, as a decimal number. This
166215 		attribute should be used in conjunction with 'dormant' attribute
167216 		to determine the interface usability. Possible values:
168
-		0: default link mode
169
-		1: dormant link mode
217
+
218
+		==  =================
219
+		0   default link mode
220
+		1   dormant link mode
221
+		==  =================
170222 
171223 What:		/sys/class/net/<iface>/mtu
172224 Date:		April 2005
....@@ -195,7 +247,9 @@
195247 Contact:	netdev@vger.kernel.org
196248 Description:
197249 		Indicates the interface RFC2863 operational state as a string.
250
+
198251 		Possible values are:
252
+
199253 		"unknown", "notpresent", "down", "lowerlayerdown", "testing",
200254 		"dormant", "up".
201255 
....@@ -224,7 +278,7 @@
224278 		an integer representing the link speed in Mbits/sec.
225279 
226280 		Note: this attribute is only valid for interfaces that implement
227
-		the ethtool get_settings method (mostly Ethernet ).
281
+		the ethtool get_link_ksettings method (mostly Ethernet).
228282 
229283 What:		/sys/class/net/<iface>/tx_queue_len
230284 Date:		April 2005