Commit 021f9e67 authored by Joe Damato's avatar Joe Damato Committed by Jakub Kicinski
Browse files

gve: Map NAPI instances to queues 



Use the netdev-genl interface to map NAPI instances to queues so that
this information is accessible to user programs via netlink.

$ ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/netdev.yaml \
			 --dump queue-get --json='{"ifindex": 2}'

[{'id': 0, 'ifindex': 2, 'napi-id': 8313, 'type': 'rx'},
 {'id': 1, 'ifindex': 2, 'napi-id': 8314, 'type': 'rx'},
 {'id': 2, 'ifindex': 2, 'napi-id': 8315, 'type': 'rx'},
 {'id': 3, 'ifindex': 2, 'napi-id': 8316, 'type': 'rx'},
 {'id': 4, 'ifindex': 2, 'napi-id': 8317, 'type': 'rx'},
[...]
 {'id': 0, 'ifindex': 2, 'napi-id': 8297, 'type': 'tx'},
 {'id': 1, 'ifindex': 2, 'napi-id': 8298, 'type': 'tx'},
 {'id': 2, 'ifindex': 2, 'napi-id': 8299, 'type': 'tx'},
 {'id': 3, 'ifindex': 2, 'napi-id': 8300, 'type': 'tx'},
 {'id': 4, 'ifindex': 2, 'napi-id': 8301, 'type': 'tx'},
[...]

Signed-off-by: default avatarJoe Damato <jdamato@fastly.com>
Reviewed-by: default avatarPraveen Kaligineedi <pkaligineedi@google.com>
Link: https://patch.msgid.link/20240930210731.1629-3-jdamato@fastly.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 3017238b

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

+17 −0
Original line number Diff line number Diff line
@@ -1875,6 +1875,11 @@ static void gve_turndown(struct gve_priv *priv) 


		if (!gve_tx_was_added_to_block(priv, idx))

			continue;



		if (idx < priv->tx_cfg.num_queues)

			netif_queue_set_napi(priv->dev, idx,

					     NETDEV_QUEUE_TYPE_TX, NULL);



		napi_disable(&block->napi);

	}

	for (idx = 0; idx < priv->rx_cfg.num_queues; idx++) {
@@ -1883,6 +1888,9 @@ static void gve_turndown(struct gve_priv *priv) 


		if (!gve_rx_was_added_to_block(priv, idx))

			continue;



		netif_queue_set_napi(priv->dev, idx, NETDEV_QUEUE_TYPE_RX,

				     NULL);

		napi_disable(&block->napi);

	}
@@ -1909,6 +1917,12 @@ static void gve_turnup(struct gve_priv *priv) 
			continue;



		napi_enable(&block->napi);



		if (idx < priv->tx_cfg.num_queues)

			netif_queue_set_napi(priv->dev, idx,

					     NETDEV_QUEUE_TYPE_TX,

					     &block->napi);



		if (gve_is_gqi(priv)) {

			iowrite32be(0, gve_irq_doorbell(priv, block));

		} else {
@@ -1931,6 +1945,9 @@ static void gve_turnup(struct gve_priv *priv) 
			continue;



		napi_enable(&block->napi);

		netif_queue_set_napi(priv->dev, idx, NETDEV_QUEUE_TYPE_RX,

				     &block->napi);



		if (gve_is_gqi(priv)) {

			iowrite32be(0, gve_irq_doorbell(priv, block));

		} else {