Thanks, Daniel and Leo, for the clarification. Also, good to know that there is a -force option for the ip link command. In one of the presentations online I saw that xdp support for veth & tap were added in 4.14 which is clearly incorrect. thanks, - Manohar On Mon, Aug 13, 2018 at 12:13 AM, Daniel Borkmann <daniel@xxxxxxxxxxxxx> wrote: > On 08/13/2018 09:10 AM, Daniel Borkmann wrote: >> Hi Manohar, hi Leo, >> >> On 08/13/2018 07:51 AM, Chang-an Song wrote: >>> Hello Manohar >>> >>> I also tried the same test, and the following error message came out. >>> If possible, >>> Could you let me know where did you find native XDP support for the >>> veth interface in 4.15 kernel? >> >> The 4.15 kernel does not have native XDP support in the kernel, so > > (Just to be clear, for veth specifically I mean here.) > >> only generic XDP would work for veth. Native XDP for veth is scheduled >> for 4.19 kernel. You can test it out from bpf-next kernel tree here: >> >> git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git > > Related merge commit for reference: > > https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=60afdf066a35317efd5d1d7ae7c7f4ef2b32601f > >>> # ip -force link set dev veth1 xdpdrv obj test_xdp_redirect.o sec >>> redirect_to_222 >>> RTNETLINK answers: Operation not supported >>> >>> # uname -a >>> Linux xdptest 4.17.0-rc7+ #4 SMP Mon Aug 13 13:41:24 KST 2018 x86_64 >>> x86_64 x86_64 GNU/Linux >>> >>> >>> This is the native XDP list I know as below, >>> - Mellanox: mlx4 (v4.10) + mlx5 (v4.9) >>> - Netronome: nfp (v4.10) >>> - Virtio-net (v4.10) >>> - Cavium/Qlogic: qede (v4.10) >>> - Cavium: thunder/nicvf (v4.12) >>> - Broadcom: bnxt (v4.12) >>> - Intel: ixgbe (v4.12) + i40e (net-next) >> >> There are a couple missing, for full list please see: >> >> http://cilium.readthedocs.io/en/latest/bpf/#xdp >> >> Thanks, >> Daniel >> >>> If I am incorrect information, please tell me, again. >>> >>> BR/Leo >>> >>> On Sun, Aug 12, 2018 at 4:22 PM Manohar Kumar <forwardinglnx@xxxxxxxxx> wrote: >>>> >>>> Hello, >>>> >>>> I am trying out XDP using the example >>>> https://github.com/torvalds/linux/blob/master/tools/testing/selftests/bpf/test_xdp_redirect.sh >>>> >>>> To set the xdp program instead of using xdpgeneric I did >>>> >>>> ip link set dev veth1 xdp obj test_xdp_redirect.o sec redirect_to_222 >>>> >>>> My kernel version is 4.15.0 which I think has native XDP support for >>>> veth. But from the ip link ouptut it looks like the generic XDP is >>>> being used and not the native XDP for veth. >>>> >>>> What is the right way to make use of the native XDP for veth ? >>>> >>>> root@ubuntu-G551JW:~# ip link show dev veth1 >>>> 111: veth1@if18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 xdpgeneric >>>> qdisc noqueue state UP mode DEFAULT group default qlen 1000 >>>> link/ether c2:ff:f4:d9:15:8f brd ff:ff:ff:ff:ff:ff link-netnsid 0 >>>> prog/xdp id 32 tag d92aa6f7de3bd7d0 jited >>>> root@ubuntu-G551JW:~# >>>> >>>> Thanks for the help. >>>> >>>> -Kumar >> >
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