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The i40e driver has a special "FDIR" RX-ring (I40E_VSI_FDIR) which is a sideband channel for configuring/updating the flow director tables. This (i40e_vsi_)type does not invoke XDP-ebpf code. As suggested by Björn (V2): Instead of marking this I40E_VSI_FDIR RX-ring a special case, reverse the logic and only select RX-rings of type I40E_VSI_MAIN to register xdp_rxq_info's for. Driver hook points for xdp_rxq_info: * reg : i40e_setup_rx_descriptors (via i40e_vsi_setup_rx_resources) * unreg: i40e_free_rx_resources (via i40e_vsi_free_rx_resources) Tested on actual hardware with samples/bpf program. V2: Fixed bug in i40e_set_ringparam (memset zero) + match on I40E_VSI_MAIN. V4: Update patch desc that got out-of-sync with code. Cc: intel-wired-lan@lists.osuosl.org Cc: Björn Töpel <bjorn.topel@intel.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.