Lines Matching +full:fixed +full:- +full:layout

1 .. SPDX-License-Identifier: GPL-2.0
8 via :doc:`af_xdp`. Refer to :doc:`xdp-rx-metadata` on how to access similar
17 The metadata layout is a fixed UAPI, refer to ``union xsk_tx_metadata`` in
26 ``xdp_desc->addr`` in the umem frame. Within a frame, the metadata
27 layout is as follows::
31     +-----------------+---------+----------------------------+
33     +-----------------+---------+----------------------------+
36                           xdp_desc->addr
40 use ``xdp_desc->addr - tx_metadata_len`` to locate
47 - ``XDP_TXMD_FLAGS_TIMESTAMP``: requests the device to put transmission
49 - ``XDP_TXMD_FLAGS_CHECKSUM``: requests the device to calculate L4
56 bit in the ``options`` field. Also note that in a multi-buffer packet
72 Refer to ``xsk-flags`` features bitmask in
75 - ``tx-timestamp``: device supports ``XDP_TXMD_FLAGS_TIMESTAMP``
76 - ``tx-checksum``: device supports ``XDP_TXMD_FLAGS_CHECKSUM``
85 for a more bare-bones example.