mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 18:00:53 +07:00
12b8fc10ea
bnx2fc.txt outlines the driver usage model. Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
76 lines
3.1 KiB
Plaintext
76 lines
3.1 KiB
Plaintext
Operating FCoE using bnx2fc
|
|
===========================
|
|
Broadcom FCoE offload through bnx2fc is full stateful hardware offload that
|
|
cooperates with all interfaces provided by the Linux ecosystem for FC/FCoE and
|
|
SCSI controllers. As such, FCoE functionality, once enabled is largely
|
|
transparent. Devices discovered on the SAN will be registered and unregistered
|
|
automatically with the upper storage layers.
|
|
|
|
Despite the fact that the Broadcom's FCoE offload is fully offloaded, it does
|
|
depend on the state of the network interfaces to operate. As such, the network
|
|
interface (e.g. eth0) associated with the FCoE offload initiator must be 'up'.
|
|
It is recommended that the network interfaces be configured to be brought up
|
|
automatically at boot time.
|
|
|
|
Furthermore, the Broadcom FCoE offload solution creates VLAN interfaces to
|
|
support the VLANs that have been discovered for FCoE operation (e.g.
|
|
eth0.1001-fcoe). Do not delete or disable these interfaces or FCoE operation
|
|
will be disrupted.
|
|
|
|
Driver Usage Model:
|
|
===================
|
|
|
|
1. Ensure that fcoe-utils package is installed.
|
|
|
|
2. Configure the interfaces on which bnx2fc driver has to operate on.
|
|
Here are the steps to configure:
|
|
a. cd /etc/fcoe
|
|
b. copy cfg-ethx to cfg-eth5 if FCoE has to be enabled on eth5.
|
|
c. Repeat this for all the interfaces where FCoE has to be enabled.
|
|
d. Edit all the cfg-eth files to set "no" for DCB_REQUIRED** field, and
|
|
"yes" for AUTO_VLAN.
|
|
e. Other configuration parameters should be left as default
|
|
|
|
3. Ensure that "bnx2fc" is in SUPPORTED_DRIVERS list in /etc/fcoe/config.
|
|
|
|
4. Start fcoe service. (service fcoe start). If Broadcom devices are present in
|
|
the system, bnx2fc driver would automatically claim the interfaces, starts vlan
|
|
discovery and log into the targets.
|
|
|
|
5. "Symbolic Name" in 'fcoeadm -i' output would display if bnx2fc has claimed
|
|
the interface.
|
|
Eg:
|
|
[root@bh2 ~]# fcoeadm -i
|
|
Description: NetXtreme II BCM57712 10 Gigabit Ethernet
|
|
Revision: 01
|
|
Manufacturer: Broadcom Corporation
|
|
Serial Number: 0010186FD558
|
|
Driver: bnx2x 1.70.00-0
|
|
Number of Ports: 2
|
|
|
|
Symbolic Name: bnx2fc v1.0.5 over eth5.4
|
|
OS Device Name: host11
|
|
Node Name: 0x10000010186FD559
|
|
Port Name: 0x20000010186FD559
|
|
FabricName: 0x2001000DECB3B681
|
|
Speed: 10 Gbit
|
|
Supported Speed: 10 Gbit
|
|
MaxFrameSize: 2048
|
|
FC-ID (Port ID): 0x0F0377
|
|
State: Online
|
|
|
|
6. Verify the vlan discovery is performed by running ifconfig and notice
|
|
<INTERFACE>.<VLAN>-fcoe interfaces are automatically created.
|
|
|
|
Refer to fcoeadm manpage for more information on fcoeadm operations to
|
|
create/destroy interfaces or to display lun/target information.
|
|
|
|
NOTE:
|
|
====
|
|
** Broadcom FCoE capable devices implement a DCBX/LLDP client on-chip. Only one
|
|
LLDP client is allowed per interface. For proper operation all host software
|
|
based DCBX/LLDP clients (e.g. lldpad) must be disabled. To disable lldpad on a
|
|
given interface, run the following command:
|
|
|
|
lldptool set-lldp -i <interface_name> adminStatus=disabled
|