On Sat, 29 Oct 2022 02:39:01 +0530 Ramakrishnan G <gram...@gmail.com> wrote:
> From: Ramakrishnan G <gram...@gmail.com> > To: aaron.f.br...@intel.com, dev@dpdk.org, sarava...@gmail.com > Subject: Flow Bifurcation of splitting the traffic between kernel space and > user space (DPDK) > Date: Sat, 29 Oct 2022 02:39:01 +0530 > > Dear Aaron and DPDK Dev Team, > > Thanks for the Article talks about the Traffic Flow bifurcation > between kernel space and user space (DPDK) (3. Flow Bifurcation How-to > Guide — Data Plane Development Kit 16.07.2 documentation (dpdk.org) > <https://doc.dpdk.org/guides-16.07/howto/flow_bifurcation.html>) That DPDK release is over 6 years old. That feature is no longer supported on Intel NIC's. You are better off using AF_XDP. > > We are trying to test this functionality for sending only the SSH (port 22) > traffic to kernel and all the other traffic to be transferred to the user > space (DPDK) by assigning same IP for both the virtual interface (one > virtual interface is owned by the DPDK and another virtual interface is > owned by the DPDK ) > > Using the igb driver with max_vfs setting, we were able to create the > virtual link and map it to user space (DPDK) and another link into kernel > space. we assigned different IP addresses and we were able to reach from > other host. > > But when we are trying to configure the flow-type for port 22 > > Ubuntu# ethtool -K eth9 ntuple on > Ubuntu## ethtool -N eth9 flow-type ip4 dst-port 22 action 0 > rmgr: Cannot insert RX class rule: Invalid argument > Ubuntu## ethtool -N eth9 flow-type ip4 dst-port 22 action 1 > rmgr: Cannot insert RX class rule: Invalid argument > Ubuntu## ethtool -N eth9 flow-type ip4 dst-port 22 action 2 > rmgr: Cannot insert RX class rule: Invalid argument > > We tried to apply the patch that was given in the following link, > ( > https://patchwork.ozlabs.org/project/intel-wired-lan/patch/1451456399-13353-1-git-send-email-gangfeng.hu...@ni.com/#1236040 > ) > > But we couldn't patch any of the latest igb driver and we tried to patch > with the 2016 igb driver. > > please help us in sharing the info where can we apply the patch for igb > driver in Ubuntu. The igb NIC does not have an flow direction. The bifurcation for Intel NIC is based off of kernel flow director.
