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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Willem de Bruijn , Simon Horman , linux-kernel@vger.kernel.org (open list) Subject: [RFC net-next 1/2] gve: Map IRQs to NAPI instances Date: Thu, 26 Sep 2024 03:00:21 +0000 Message-Id: <20240926030025.226221-2-jdamato@fastly.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240926030025.226221-1-jdamato@fastly.com> References: <20240926030025.226221-1-jdamato@fastly.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use netdev-genl interface to map IRQs to NAPI instances so that this information is accesible by user apps via netlink. $ cat /proc/interrupts | grep gve | grep -v mgmnt | cut -f1 --delimiter=3D'= :' 34 35 36 37 38 39 40 [...] 65 $ ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/netdev.yaml \ --dump napi-get --json=3D'{"ifindex": 2}' [{'id': 8288, 'ifindex': 2, 'irq': 65}, [...] {'id': 8263, 'ifindex': 2, 'irq': 40}, {'id': 8262, 'ifindex': 2, 'irq': 39}, {'id': 8261, 'ifindex': 2, 'irq': 38}, {'id': 8260, 'ifindex': 2, 'irq': 37}, {'id': 8259, 'ifindex': 2, 'irq': 36}, {'id': 8258, 'ifindex': 2, 'irq': 35}, {'id': 8257, 'ifindex': 2, 'irq': 34}] Signed-off-by: Joe Damato --- drivers/net/ethernet/google/gve/gve_utils.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/google/gve/gve_utils.c b/drivers/net/ethe= rnet/google/gve/gve_utils.c index 2349750075a5..30fef100257e 100644 --- a/drivers/net/ethernet/google/gve/gve_utils.c +++ b/drivers/net/ethernet/google/gve/gve_utils.c @@ -111,6 +111,7 @@ void gve_add_napi(struct gve_priv *priv, int ntfy_idx, struct gve_notify_block *block =3D &priv->ntfy_blocks[ntfy_idx]; =20 netif_napi_add(priv->dev, &block->napi, gve_poll); + netif_napi_set_irq(&block->napi, block->irq); } =20 void gve_remove_napi(struct gve_priv *priv, int ntfy_idx) --=20 2.43.0 From nobody Fri Nov 29 00:33:42 2024 Received: from mail-pf1-f177.google.com (mail-pf1-f177.google.com [209.85.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F27D517B513 for ; Thu, 26 Sep 2024 03:00:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727319649; cv=none; b=Fjaqbf0WVWh6abrpysgnPEJzAHI+fmCZxRkQb03RWaLtnEmZIair/G2lhv+b2aO3PaNRu20RcO7LJaFp6cAmTXkkGjyg9Y/8V6wE+hoYlJ+nIB2qTh7+wq0xfmzeThq/mNdNWRvHhW0YLvH1NfK9V8UyR+vtpqjb93BIDYfOsmU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727319649; c=relaxed/simple; bh=fOP1RW8xaYXgo6UAKNyyCaNdqYpSFEzAXlb1gulSoCs=; 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Willem de Bruijn , Harshitha Ramamurthy , Ziwei Xiao , linux-kernel@vger.kernel.org (open list) Subject: [RFC net-next 2/2] gve: Map NAPI instances to queues Date: Thu, 26 Sep 2024 03:00:22 +0000 Message-Id: <20240926030025.226221-3-jdamato@fastly.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240926030025.226221-1-jdamato@fastly.com> References: <20240926030025.226221-1-jdamato@fastly.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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=3D'{"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 --- drivers/net/ethernet/google/gve/gve_main.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ether= net/google/gve/gve_main.c index 661566db68c8..da811e90bdfa 100644 --- a/drivers/net/ethernet/google/gve/gve_main.c +++ b/drivers/net/ethernet/google/gve/gve_main.c @@ -1875,6 +1875,9 @@ static void gve_turndown(struct gve_priv *priv) =20 if (!gve_tx_was_added_to_block(priv, idx)) continue; + + netif_queue_set_napi(priv->dev, idx, NETDEV_QUEUE_TYPE_TX, + NULL); napi_disable(&block->napi); } for (idx =3D 0; idx < priv->rx_cfg.num_queues; idx++) { @@ -1883,6 +1886,9 @@ static void gve_turndown(struct gve_priv *priv) =20 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); } =20 @@ -1909,6 +1915,9 @@ static void gve_turnup(struct gve_priv *priv) continue; =20 napi_enable(&block->napi); + 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 +1940,9 @@ static void gve_turnup(struct gve_priv *priv) continue; =20 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 { --=20 2.43.0