The 'XDP_RING_NEED_WAKEUP' and related flags are defined if_xdp.h, so if users are building their own kernel, users have to update the kernel's header files, by doing:
$ make headers_install INSTALL_HDR_PATH=/usr Otherwise the following error shows: /usr/local/include/bpf/xsk.h: In function 'xsk_ring_prod__needs_wakeup': /usr/local/include/bpf/xsk.h:82:21: error: 'XDP_RING_NEED_WAKEUP' undeclared \ (first use in this function) return *r->flags & XDP_RING_NEED_WAKEUP; Reported-by: Tomek Osinski <osins...@gmail.com> Reported-at: https://osinstom.github.io/en/tutorial/ovs-afxdp-installation/ Signed-off-by: William Tu <u9012...@gmail.com> Acked-by: Ben Pfaff <b...@ovn.org> --- Documentation/intro/install/afxdp.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/intro/install/afxdp.rst b/Documentation/intro/install/afxdp.rst index c4685fa7ebac..99003e4dbdb2 100644 --- a/Documentation/intro/install/afxdp.rst +++ b/Documentation/intro/install/afxdp.rst @@ -108,6 +108,14 @@ vSwitch with AF_XDP will require the following: * CONFIG_XDP_SOCKETS_DIAG=y (Debugging) +- If you're building your own kernel, be sure that you're installing kernel + headers too. For example, with the following command:: + + make headers_install INSTALL_HDR_PATH=/usr + +- If you're using kernel from the distribution, be sure that corresponding + kernel headers package installed. + - Once your AF_XDP-enabled kernel is ready, if possible, run **./xdpsock -r -N -z -i <your device>** under linux/samples/bpf. This is an OVS independent benchmark tools for AF_XDP. -- 2.7.4 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
