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[35.235.96.74]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2e0b6c4bcddsm8427642a91.4.2024.09.30.14.07.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Sep 2024 14:07:50 -0700 (PDT) From: Joe Damato To: netdev@vger.kernel.org Cc: pkaligineedi@google.com, horms@kernel.org, Joe Damato , Jeroen de Borst , Shailend Chand , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Willem de Bruijn , linux-kernel@vger.kernel.org (open list) Subject: [net-next v2 1/2] gve: Map IRQs to NAPI instances Date: Mon, 30 Sep 2024 21:07:07 +0000 Message-ID: <20240930210731.1629-2-jdamato@fastly.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240930210731.1629-1-jdamato@fastly.com> References: <20240930210731.1629-1-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 accessible 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 Reviewed-by: Praveen Kaligineedi --- v2: - Fix a spelling error in the commit message, pointed out by Simon Horman 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]; 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[35.235.96.74]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2e0b6c4bcddsm8427642a91.4.2024.09.30.14.07.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Sep 2024 14:07:55 -0700 (PDT) From: Joe Damato To: netdev@vger.kernel.org Cc: pkaligineedi@google.com, horms@kernel.org, Joe Damato , Jeroen de Borst , Shailend Chand , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Willem de Bruijn , Harshitha Ramamurthy , Ziwei Xiao , linux-kernel@vger.kernel.org (open list) Subject: [net-next v2 2/2] gve: Map NAPI instances to queues Date: Mon, 30 Sep 2024 21:07:08 +0000 Message-ID: <20240930210731.1629-3-jdamato@fastly.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240930210731.1629-1-jdamato@fastly.com> References: <20240930210731.1629-1-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 Reviewed-by: Praveen Kaligineedi --- v2: - Check that idx < priv->tx_cfg.num_queues in both gve_turnup and gve_turndown as suggested by Praveen Kaligineedi 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/ether= net/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) =20 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 =3D 0; idx < priv->rx_cfg.num_queues; idx++) { @@ -1883,6 +1888,9 @@ 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 +1917,12 @@ static void gve_turnup(struct gve_priv *priv) continue; =20 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; =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