gve: Tx path for DQO-QPL

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Each QPL page is divided into GVE_TX_BUFS_PER_PAGE_DQO buffers.
When a packet needs to be transmitted, we break the packet into max
GVE_TX_BUF_SIZE_DQO sized chunks and transmit each chunk using a TX
descriptor.
We allocate the TX buffers from the free list in dqo_tx.
We store these TX buffer indices in an array in the pending_packet
structure.

The TX buffers are returned to the free list in dqo_compl after
receiving packet completion or when removing packets from miss
completions list.

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 21:34:42 +00:00 • committed by David S. Miller

parent 66ce8e6b49

commit a6fb8d5a8b

2 changed files with 398 additions and 83 deletions

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77

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

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410

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

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