Based on kernel version 3.19. Page generated on 2015-02-13 21:22 EST.
1 Operating FCoE using bnx2fc 2 =========================== 3 Broadcom FCoE offload through bnx2fc is full stateful hardware offload that 4 cooperates with all interfaces provided by the Linux ecosystem for FC/FCoE and 5 SCSI controllers. As such, FCoE functionality, once enabled is largely 6 transparent. Devices discovered on the SAN will be registered and unregistered 7 automatically with the upper storage layers. 8 9 Despite the fact that the Broadcom's FCoE offload is fully offloaded, it does 10 depend on the state of the network interfaces to operate. As such, the network 11 interface (e.g. eth0) associated with the FCoE offload initiator must be 'up'. 12 It is recommended that the network interfaces be configured to be brought up 13 automatically at boot time. 14 15 Furthermore, the Broadcom FCoE offload solution creates VLAN interfaces to 16 support the VLANs that have been discovered for FCoE operation (e.g. 17 eth0.1001-fcoe). Do not delete or disable these interfaces or FCoE operation 18 will be disrupted. 19 20 Driver Usage Model: 21 =================== 22 23 1. Ensure that fcoe-utils package is installed. 24 25 2. Configure the interfaces on which bnx2fc driver has to operate on. 26 Here are the steps to configure: 27 a. cd /etc/fcoe 28 b. copy cfg-ethx to cfg-eth5 if FCoE has to be enabled on eth5. 29 c. Repeat this for all the interfaces where FCoE has to be enabled. 30 d. Edit all the cfg-eth files to set "no" for DCB_REQUIRED** field, and 31 "yes" for AUTO_VLAN. 32 e. Other configuration parameters should be left as default 33 34 3. Ensure that "bnx2fc" is in SUPPORTED_DRIVERS list in /etc/fcoe/config. 35 36 4. Start fcoe service. (service fcoe start). If Broadcom devices are present in 37 the system, bnx2fc driver would automatically claim the interfaces, starts vlan 38 discovery and log into the targets. 39 40 5. "Symbolic Name" in 'fcoeadm -i' output would display if bnx2fc has claimed 41 the interface. 42 Eg: 43 [root@bh2 ~]# fcoeadm -i 44 Description: NetXtreme II BCM57712 10 Gigabit Ethernet 45 Revision: 01 46 Manufacturer: Broadcom Corporation 47 Serial Number: 0010186FD558 48 Driver: bnx2x 1.70.00-0 49 Number of Ports: 2 50 51 Symbolic Name: bnx2fc v1.0.5 over eth5.4 52 OS Device Name: host11 53 Node Name: 0x10000010186FD559 54 Port Name: 0x20000010186FD559 55 FabricName: 0x2001000DECB3B681 56 Speed: 10 Gbit 57 Supported Speed: 10 Gbit 58 MaxFrameSize: 2048 59 FC-ID (Port ID): 0x0F0377 60 State: Online 61 62 6. Verify the vlan discovery is performed by running ifconfig and notice 63 <INTERFACE>.<VLAN>-fcoe interfaces are automatically created. 64 65 Refer to fcoeadm manpage for more information on fcoeadm operations to 66 create/destroy interfaces or to display lun/target information. 67 68 NOTE: 69 ==== 70 ** Broadcom FCoE capable devices implement a DCBX/LLDP client on-chip. Only one 71 LLDP client is allowed per interface. For proper operation all host software 72 based DCBX/LLDP clients (e.g. lldpad) must be disabled. To disable lldpad on a 73 given interface, run the following command: 74 75 lldptool set-lldp -i <interface_name> adminStatus=disabled