Bailey Forrest a4aa1f1e69 gve: Add DQO fields for core data structures ... - Add new DQO datapath structures: - `gve_rx_buf_queue_dqo` - `gve_rx_compl_queue_dqo` - `gve_rx_buf_state_dqo` - `gve_tx_desc_dqo` - `gve_tx_pending_packet_dqo` - Incorporate these into the existing ring data structures: - `gve_rx_ring` - `gve_tx_ring` Noteworthy mentions: - `gve_rx_buf_state` represents an RX buffer which was posted to HW. Each RX queue has an array of these objects and the index into the array is used as the buffer_id when posted to HW. - `gve_tx_pending_packet_dqo` is treated similarly for TX queues. The completion_tag is the index into the array. - These two structures have links for linked lists which are represented by 16b indexes into a contiguous array of these structures. This reduces memory footprint compared to 64b pointers. - We use unions for the writeable datapath structures to reduce cache footprint. GQI specific members will renamed like DQO members in a future patch. Signed-off-by: Bailey Forrest <bcf@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Catherine Sullivan <csully@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2021-06-24 12:47:38 -07:00
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gve	gve: Add DQO fields for core data structures	2021-06-24 12:47:38 -07:00
Kconfig	gve: Add dqo descriptors	2021-06-24 12:47:37 -07:00
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