gve: RX path for DQO-QPL

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The RX path allocates the QPL page pool at queue creation, and
tries to reuse these pages through page recycling. This patch
ensures that on refill no non-QPL pages are posted to the device.

When the driver is running low on free buffers, an ondemand
allocation step kicks in that allocates a non-qpl page for
SKB business to free up the QPL page in use.

gve_try_recycle_buf was moved to gve_rx_append_frags so that driver does
not attempt to mark buffer as used if a non-qpl page was allocated
ondemand.

Signed-off-by: Rushil Gupta <rushilg@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Signed-off-by: Bailey Forrest <bcf@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Rushil Gupta 2023-08-04 21:34:43 +00:00 • committed by David S. Miller

parent a6fb8d5a8b

commit e7075ab4fb

2 changed files with 114 additions and 18 deletions

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6

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

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126

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

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