diff options
| author | David Awogbemila <awogbemila@google.com> | 2021-10-24 11:42:37 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-10-25 14:13:12 +0100 |
| commit | 37149e9374bf7271563f7477ace9014ebc65a8af (patch) | |
| tree | 05877f2c1e56b83ed4c49a87aa2487897f11ee9c /drivers/net/ethernet/google/gve/gve_adminq.c | |
| parent | 1344e751e91092ac0cb63b194621e59d2f364197 (diff) | |
gve: Implement packet continuation for RX.
This enables the driver to receive RX packets spread across multiple
buffers:
For a given multi-fragment packet the "packet continuation" bit is set
on all descriptors except the last one. These descriptors' payloads are
combined into a single SKB before the SKB is handed to the
networking stack.
This change adds a "packet buffer size" notion for RX queues. The
CreateRxQueue AdminQueue command sent to the device now includes the
packet_buffer_size.
We opt for a packet_buffer_size of PAGE_SIZE / 2 to give the
driver the opportunity to flip pages where we can instead of copying.
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Reviewed-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/google/gve/gve_adminq.c')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_adminq.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_adminq.c b/drivers/net/ethernet/google/gve/gve_adminq.c index af2c1d1535f5..3dfda6da6a96 100644 --- a/drivers/net/ethernet/google/gve/gve_adminq.c +++ b/drivers/net/ethernet/google/gve/gve_adminq.c @@ -530,6 +530,7 @@ static int gve_adminq_create_rx_queue(struct gve_priv *priv, u32 queue_index) cpu_to_be64(rx->data.data_bus), cmd.create_rx_queue.index = cpu_to_be32(queue_index); cmd.create_rx_queue.queue_page_list_id = cpu_to_be32(qpl_id); + cmd.create_rx_queue.packet_buffer_size = cpu_to_be16(rx->packet_buffer_size); } else { cmd.create_rx_queue.rx_ring_size = cpu_to_be16(priv->rx_desc_cnt); |