Re: [e1000-devel] Stablish uni-directional ethernet link
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 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
Re: [e1000-devel] Stablish uni-directional ethernet link
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
[e1000-devel] Stablish uni-directional ethernet link
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? ___ 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
