From 021f9e671e4a7166e7a267531553b9e0b7d19681 Mon Sep 17 00:00:00 2001 From: Joe Damato Date: Mon, 30 Sep 2024 21:07:08 +0000 Subject: [PATCH] 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: Joe Damato Reviewed-by: Praveen Kaligineedi Link: https://patch.msgid.link/20240930210731.1629-3-jdamato@fastly.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/google/gve/gve_main.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c index 661566db68c8..294ddcd0bf6c 100644 --- a/drivers/net/ethernet/google/gve/gve_main.c +++ b/drivers/net/ethernet/google/gve/gve_main.c @@ -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 {