1 .. SPDX-License-Identifier: GPL-2.0
3 ===========================
4 Operating FCoE using bnx2fc
5 ===========================
6 Broadcom FCoE offload through bnx2fc is full stateful hardware offload that
7 cooperates with all interfaces provided by the Linux ecosystem for FC/FCoE and
8 SCSI controllers. As such, FCoE functionality, once enabled is largely
9 transparent. Devices discovered on the SAN will be registered and unregistered
10 automatically with the upper storage layers.
12 Despite the fact that the Broadcom's FCoE offload is fully offloaded, it does
13 depend on the state of the network interfaces to operate. As such, the network
14 interface (e.g. eth0) associated with the FCoE offload initiator must be 'up'.
15 It is recommended that the network interfaces be configured to be brought up
16 automatically at boot time.
18 Furthermore, the Broadcom FCoE offload solution creates VLAN interfaces to
19 support the VLANs that have been discovered for FCoE operation (e.g.
20 eth0.1001-fcoe). Do not delete or disable these interfaces or FCoE operation
26 1. Ensure that fcoe-utils package is installed.
28 2. Configure the interfaces on which bnx2fc driver has to operate on.
29 Here are the steps to configure:
32 b. copy cfg-ethx to cfg-eth5 if FCoE has to be enabled on eth5.
33 c. Repeat this for all the interfaces where FCoE has to be enabled.
34 d. Edit all the cfg-eth files to set "no" for DCB_REQUIRED** field, and
36 e. Other configuration parameters should be left as default
38 3. Ensure that "bnx2fc" is in SUPPORTED_DRIVERS list in /etc/fcoe/config.
40 4. Start fcoe service. (service fcoe start). If Broadcom devices are present in
41 the system, bnx2fc driver would automatically claim the interfaces, starts vlan
42 discovery and log into the targets.
44 5. "Symbolic Name" in 'fcoeadm -i' output would display if bnx2fc has claimed
49 [root@bh2 ~]# fcoeadm -i
50 Description: NetXtreme II BCM57712 10 Gigabit Ethernet
52 Manufacturer: Broadcom Corporation
53 Serial Number: 0010186FD558
54 Driver: bnx2x 1.70.00-0
57 Symbolic Name: bnx2fc v1.0.5 over eth5.4
58 OS Device Name: host11
59 Node Name: 0x10000010186FD559
60 Port Name: 0x20000010186FD559
61 FabricName: 0x2001000DECB3B681
63 Supported Speed: 10 Gbit
65 FC-ID (Port ID): 0x0F0377
68 6. Verify the vlan discovery is performed by running ifconfig and notice
69 <INTERFACE>.<VLAN>-fcoe interfaces are automatically created.
71 Refer to fcoeadm manpage for more information on fcoeadm operations to
72 create/destroy interfaces or to display lun/target information.
76 ** Broadcom FCoE capable devices implement a DCBX/LLDP client on-chip. Only one
77 LLDP client is allowed per interface. For proper operation all host software
78 based DCBX/LLDP clients (e.g. lldpad) must be disabled. To disable lldpad on a
79 given interface, run the following command::
81 lldptool set-lldp -i <interface_name> adminStatus=disabled