How to set NMC-6003/6003L (chip:E810) QSFP Port Tx disable function

Purpose:

It list How to enable E810 QSFP TX_disabled function by Linux ice driver for customer reference, 

Target Audience:

For Advantech TSE, RBU AE, outsourcing service engineer(s) and End customer with the following knowledges  :

• Linux and Ethernet troubleshooting experience

Content:

1. TX disable function means the SFP module's TX laser will be deactivated upon executing "ifconfig <NIC> down

Enabled TX Disabled function & set ifconfig <NIC> as down	Enabled TX Disabled function & set ifconfig <NIC> as up

2. When remote system's needs to enable NMC-6003/6003L (Chip: E810) TX disable function, it has to check following items.

2.1 Please install NMC-6003/6003L approved QSFP module, and QSFP module needs to support TX disable, (ex: Finisar FTLC9551REPM 100G QSFP28 Optical Transceiver)

2.2  key-in following command  for set "link-down-on-close" as ON

# ethtool --set-priv-flags <NIC ID> link-down-on-close on
# ethtool --show-priv-flags <NIC ID>
# ifconfig <NIC ID> down

PS: The priv-flags setting will return to default after reboot or power-off system, suggesting customer makes a script to set priv-flags function.

3.  Example: Set NMC-6003L port 1  to enable TX disable

3.1 Key-in following command to set NMC-6003L port 1 (NIC ID: b01p0)  to enable TX disable

# ethtool --set-priv-flags b01p0 link-down-on-close on
# ethtool --show-priv-flags b01p1
Private flags for b01p1:
link-down-on-close : on
fw-lldp-agent : off
channel-inline-fd-mark : off
channel-pkt-inspect-optimize : on
channel-pkt-clean-bp-stop : off
channel-pkt-clean-bp-stop-cfg: off
vf-true-promisc-support : off
mdd-auto-reset-vf : off
vf-vlan-pruning : off
legacy-rx : off
cgu_fast_lock : off
dpll_monitor : off
extts_filter : off
ptp_wt_enabled : on
allow-no-fec-modules-in-auto : off

3.2 key-in ifconfig <NIC ID> down command to set NMC-6003 port 1(NIC ID: b01p0) as down and check QSFP module TX ports doesn't output signal.

# ifconfig b01p0 down
[12546.340074] ice 0000:01:00.0 b01p0: NIC Link is Down