thank you for the advice, With setting the FLU bit to one, the link state changes to the UP state successfully, but I can not receive UDP packets that are sent from the TX side on the RX side. I also tried to set the speed with LMS bits to "1 GbE link (no backplane auto-negotiation)" and "10 GbE serial link (SFI – no backplane auto-negotiation)".
any advice to solve this problem is appreciated. On Sat, Jul 29, 2023 at 4:24 AM Jesse Brandeburg <jesse.brandeb...@intel.com> wrote: > On 7/28/2023 6:26 AM, Alireza Sadeghpour wrote: > > Hi, I am trying to establish a uni-directional Ethernet link where a > > singular fiber is used to transmit data to the receiver where both sides > > use ixgbe as driver. The Rx of the transmit side and the Tx of the > receive > > side are not physically connected, like in a Data diode scenario. The > > problem is, as soon as I detach the tx line from one side, both side link > > status goes DOWN. is it possible to mask link status in the ixgbe driver > to > > force it to be UP state in both side? > > Yes, there is a force-link-up bit, called AUTOC.FLU. > > You may have to set some other registers in AUTOC to force link speed, etc. > > I'm pretty sure this will work as I've done it in the past, but your > mileage may vary and this is way outside normal for the linux driver, so > I can't help you much beyond this email. > > If you still need help after trying the above, I recommend you contact > Intel Support. > > Jesse > _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel Ethernet, visit https://community.intel.com/t5/Ethernet-Products/bd-p/ethernet-products
