[ovs-dev] [PATCH] docs: Add header install command for afxdp.
Ben Pfaff
blp at ovn.org
Tue Jan 21 18:49:17 UTC 2020
On Tue, Jan 21, 2020 at 09:48:28AM -0800, William Tu wrote:
> The 'XDP_RING_NEED_WAKEUP' and related flags are defined if_xdp.h, so after
> installing newer 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 <osinstom at gmail.com>
> Reported-at: https://osinstom.github.io/en/tutorial/ovs-afxdp-installation/
> Signed-off-by: William Tu <u9012063 at gmail.com>
> ---
> Documentation/intro/install/afxdp.rst | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/intro/install/afxdp.rst b/Documentation/intro/install/afxdp.rst
> index c4685fa7ebac..2683d8301bb7 100644
> --- a/Documentation/intro/install/afxdp.rst
> +++ b/Documentation/intro/install/afxdp.rst
> @@ -125,6 +125,7 @@ Second, go into the Linux source directory and build libbpf in the tools
> directory::
>
> cd bpf-next/
> + make headers_install INSTALL_HDR_PATH=/usr
> cd tools/lib/bpf/
> make && make install
> make install_headers
This seems reasonable.
Acked-by: Ben Pfaff <blp at ovn.org>
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