gve: implement DQO RX datapath and control path for AF_XDP zero-copy

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Add the RX datapath for AF_XDP zero-copy for DQ RDA. The RX path is
quite similar to that of the normal XDP case. Parallel methods are
introduced to properly handle XSKs instead of normal driver buffers.

To properly support posting from XSKs, queues are destroyed and
recreated, as the driver was initially making use of page pool buffers
instead of the XSK pool memory.

Expose support for AF_XDP zero-copy, as the TX and RX datapaths both
exist.

Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Signed-off-by: Joshua Washington <joshwash@google.com>
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Link: https://patch.msgid.link/20250717152839.973004-6-jeroendb@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

This commit is contained in:

Joshua Washington 2025-07-17 08:28:39 -07:00 • committed by Paolo Abeni

parent 2236836eab

commit c1fffc5d66

4 changed files with 149 additions and 14 deletions

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3

drivers/net/ethernet/google/gve/gve.h

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24

drivers/net/ethernet/google/gve/gve_buffer_mgmt_dqo.c

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44

drivers/net/ethernet/google/gve/gve_main.c

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94

drivers/net/ethernet/google/gve/gve_rx_dqo.c

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