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05afee298a
In vhost_net_build_xdp() the 'buf' that gets queued via an xdp_buff have embedded a struct tun_xdp_hdr (located at xdp->data_hard_start) which contains the buffer length 'buflen' (with tailroom for skb_shared_info). Also storing this buflen in xdp->frame_sz, does not obsolete struct tun_xdp_hdr, as it also contains a struct virtio_net_hdr with other information. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/bpf/158945343928.97035.4620233649151726289.stgit@firesoul
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.