Hi Nayan, This isn't possible as the switch will be at customer site and ports are high premium real estate. A software solution is required. Thx. On Tue, Aug 16, 2016 at 2:39 AM, Gadre Nayan <gadrenayan@xxxxxxxxx> wrote: > If you have multiple ports on your system, you may connect a cable > directly between two ports and send packets from one port and receive > on another. > > On Tue, Aug 16, 2016 at 2:41 PM, Alan Liddell <alan.c.liddell@xxxxxxxxx> wrote: >> Would sending the packet back out through the loopback address accomplish >> what you're looking to do? >> >> >> On Aug 16, 2016 7:51 AM, "Bhaskar Upadhyayula" <bu.kernel@xxxxxxxxx> wrote: >>> >>> Hello All, >>> >>> Summary: >>> === >>> If a userspace program has a well crafted packet (ethernet or IPv4 or >>> other protocol packet), is there a way for it to send the packet to >>> kernel's network interface, simulating the behavior that the packet >>> ingress'ed on that interface? Is this possible? >>> >>> >>> Detailed Problem Description: >>> === >>> I am working on packet sampling feature (sFlow) on OpenSwitch >>> (www.openswitch.net) Network OS. Currently, this OS is supported on >>> few Accton switches that has Broadcom's Trident2 chipset. When we >>> enable packet sampling, the sampled packets are sent to a userspace >>> program, by passing the kernel network stack. This is a problem if the >>> packet was supposed to go up the network stack. >>> >>> I am investigating options to re-send the packet back to kernel >>> interface on which packet arrived on the switch. Hence this question. >>> >>> A colleague suggested looking at Tuntap interfaces. I did a quick >>> research and it did not appear that can be done. >>> >>> Any suggestions or pointers for further reading will be very helpful. >>> >>> >>> Thanks. >>> >>> _______________________________________________ >>> Kernelnewbies mailing list >>> Kernelnewbies@xxxxxxxxxxxxxxxxx >>> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
