AnsweredAssumed Answered

[IMX6SLX/LAN]Regarding the received frame discard feature

Question asked by Kazuma Sasaki on Jan 15, 2017
Latest reply on Jan 19, 2017 by Kazuma Sasaki

<My environment>

Board : MCIMX6SX-SDB

BSP version : 4.1.15-2.0.0 ga release

Hardware / Software changes : no change

Display : not use

 

<Issue description>

IMX6SXRM mentioned the received frame discard feature at section 24.6.8.4.

According to this description, when ethernet MAC receive frame which frame length is greater than MAX_FL, Ethernet MAC discard this frame data.

But, current Linux BSP seems accepting this frame.

 

<Reproduce procedure>

1.BSP boot

2.ENETx_RCR[MAX_FL] register set to 1000 Byte

3.Ping which packet length 959 byte(=frame length 1001 byte) send to IMX4. IMX received ping in violation of spec.

<Question>

How do we able to enable received frame discard featrue in this case?

 

Best Regards,

Kazuma Sasaki.

 

 

 

Outcomes