[dts] [PATCH V2 2/2] test_plans/userspace_ethtool: add note to support ixgbe nic

[Song Jiale]

according to the solution provided by the EPG team, if you read eeprom
on the ixgbe nic, use the "length" parameter to reduce the size to
0x4000.

Signed-off-by: Song Jiale <songx.jiale at intel.com>
---
 test_plans/userspace_ethtool_test_plan.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test_plans/userspace_ethtool_test_plan.rst b/test_plans/userspace_ethtool_test_plan.rst
index a0863e0a..24a1571a 100644
--- a/test_plans/userspace_ethtool_test_plan.rst
+++ b/test_plans/userspace_ethtool_test_plan.rst
@@ -76,6 +76,10 @@ Dump eeprom binary by linux's ethtool and dpdk's ethtool separately::
    ethtool --eeprom-dump INTF_0 raw on > ethtool_eeprom_0.bin
    ethtool --eeprom-dump INTF_1 raw on > ethtool_eeprom_1.bin
 
+.. note::
+   In case on ixgbe NIC to read the eeprom, please use 'length' parameter to reduce size to 0x4000.
+   For example: ethtool --eeprom-dump {INTF} length 0x4000.
+
 Retrieve eeprom on specified port using dpdk's ethtool and
 compare csum with the file dumped by ethtool::
 
-- 
2.25.1