4 Contact: Robert Love <robert.w.love@intel.com>, devel@open-fcoe.org
5 Description: The FCoE bus. Attributes in this directory are control interfaces.
10 'FCoE Controller' instance creation interface. Writing an
11 <ifname> to this file will allocate and populate sysfs with a
12 fcoe_ctlr_device (ctlr_X). The user can then configure any
13 per-port settings and finally write to the fcoe_ctlr_device's
14 'start' attribute to begin the kernel's discovery and login
18 'FCoE Controller' instance removal interface. Writing a
19 fcoe_ctlr_device's sysfs name to this file will log the
20 fcoe_ctlr_device out of the fabric or otherwise connected
21 FCoE devices. It will also free all kernel memory allocated
22 for this fcoe_ctlr_device and any structures associated
23 with it, this includes the scsi_host.
25 What: /sys/bus/fcoe/devices/ctlr_X
28 Contact: Robert Love <robert.w.love@intel.com>, devel@open-fcoe.org
29 Description: 'FCoE Controller' instances on the fcoe bus.
30 The FCoE Controller now has a three stage creation process.
31 1) Write interface name to ctlr_create 2) Configure the FCoE
32 Controller (ctlr_X) 3) Enable the FCoE Controller to begin
33 discovery and login. The FCoE Controller is destroyed by
34 writing it's name, i.e. ctlr_X to the ctlr_delete file.
39 Device loss timeout period (see below). Changing
40 this value will change the dev_loss_tmo for all
41 FCFs discovered by this controller.
44 Display or change the FCoE Controller's mode. Possible
45 modes are 'Fabric' and 'VN2VN'. If a FCoE Controller
46 is started in 'Fabric' mode then FIP FCF discovery is
47 initiated and ultimately a fabric login is attempted.
48 If a FCoE Controller is started in 'VN2VN' mode then
49 FIP VN2VN discovery and login is performed. A FCoE
50 Controller only supports one mode at a time.
53 Whether an FCoE controller is enabled or disabled.
54 0 if disabled, 1 if enabled. Writing either 0 or 1
55 to this file will enable or disable the FCoE controller.
58 Link Error Status Block (LESB) link failure count.
61 Link Error Status Block (LESB) virtual link
65 Link Error Status Block (LESB) missed FCoE
66 Initialization Protocol (FIP) Keep-Alives (FKA).
69 Link Error Status Block (LESB) symbolic error count.
72 Link Error Status Block (LESB) block error count.
75 Link Error Status Block (LESB) Fibre Channel
78 Notes: ctlr_X (global increment starting at 0)
80 What: /sys/bus/fcoe/devices/fcf_X
83 Contact: Robert Love <robert.w.love@intel.com>, devel@open-fcoe.org
84 Description: 'FCoE FCF' instances on the fcoe bus. A FCF is a Fibre Channel
85 Forwarder, which is a FCoE switch that can accept FCoE
86 (Ethernet) packets, unpack them, and forward the embedded
87 Fibre Channel frames into a FC fabric. It can also take
88 outbound FC frames and pack them in Ethernet packets to
89 be sent to their destination on the Ethernet segment.
94 Identifies the fabric that the FCF services.
100 The switch's priority amongst other FCFs on the same
104 1 indicates that the switch has been selected for use;
105 0 indicates that the switch will not be used.
108 The Fibre Channel MAP
111 The Virtual Fabric ID
114 The FCF's MAC address
117 The FIP Keep-Alive period
119 fabric_state: The internal kernel state
121 - "Unknown" - Initialization value
122 - "Disconnected" - No link to the FCF/fabric
123 - "Connected" - Host is connected to the FCF
124 - "Deleted" - FCF is being removed from the system
126 dev_loss_tmo: The device loss timeout period for this FCF.
128 Notes: A device loss infrastructure similar to the FC Transport's
129 is present in fcoe_sysfs. It is nice to have so that a
130 link flapping adapter doesn't continually advance the count
131 used to identify the discovered FCF. FCFs will exist in a
132 "Disconnected" state until either the timer expires and the
133 FCF becomes "Deleted" or the FCF is rediscovered and becomes
137 Users: The first user of this interface will be the fcoeadm application,
138 which is commonly packaged in the fcoe-utils package.