From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (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 340193E717A for ; Mon, 1 Jun 2026 17:54:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780336491; cv=none; b=UU3wmKwR9TvWDFXJxwRU+wDMFQUh+1VCfJ+IbDb/5KnyFHDoj02GK3uwjPrcAgWJiMReQTE0XLg6KzXDmwKLfKwZ/5B3r+8g28ODLgmlzncOq/OeqoweAPf/gOrGkSPqXh51G4eRngaqhJwswsSfrICZrYTY9xXKCeOypXpjS3A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780336491; c=relaxed/simple; bh=NO7ff2MjdNzbLfFOWvir+qy19F9IvmUY1vpeOLqSrMY=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=Ch/BxYyugFgGDd9EgLimNfRKFemGY7biJGs4KFihgUoWpUlYeZpcjOFDMBXZMMOsPdoZe8Wz9HNBqDvR2plHg8tr3JW5Pj3dMa8wfo9Lckrl+uADRJopRJVkVb7Jsoj38wFxtKLrkmvZGugM8D9hhA3DDKF9roFVZBWLfPku6ec= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--hramamurthy.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=mQET3XET; arc=none smtp.client-ip=209.85.210.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--hramamurthy.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="mQET3XET" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-842688fa7b8so210465b3a.0 for ; Mon, 01 Jun 2026 10:54:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1780336488; x=1780941288; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=83Wqxzx9G3Fx1CZm6JdVy+MWy9bwrjSI+ye1bNW5Jis=; b=mQET3XETpldZqVY0OhH46OrcrneFRCD/b8SN6wJGJFJYPaeRGJzTS8Rs+QUNz3w68Z /xCZBGVpI9KWeDFBjQwLZyKX77dtRnN1wy1dqEpdX/OC1MWJEoXOZwBauJHX1lBKHbHI 8mndbVFDDD0f3itDNamfp6Baq8tEOLC0BNEbrCClzbYH7vdtK2YcX8VrpyAWjpJdcE9r 7THKE6PCrt9N3QhfCZvdqPa6H8RzyHPFHtPrNw9jqe3s1cve7Xs7BJQCQIQFrjv/YGb8 M8H/QBTlk5i9a0RlKFswrd5zurA6OW9AW7Ap5jWNeSvdkEgI7P4NHtIomZV3xobM//4m onEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780336488; x=1780941288; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=83Wqxzx9G3Fx1CZm6JdVy+MWy9bwrjSI+ye1bNW5Jis=; b=nSQyQ2pfNMfigh3b51BE7eufO5nVYrHDFss3bdJLG3HcTREl0EHeiHhqzuA93a/I41 2KNCYSnH6uHmjZ1tmWrho1TXEb4oKC/xFgEZBlyFvUOhdKP+kLbwLIiImqb18pCThgs2 ch5W8YOlCoG/n95owY4Ut2jXFs7MvoH1E5zM9s0uvHaEtSGU4CSYlbzCs+Yar4AC/AGy rFuIPREeB7hs57MX5o0mGNjoqNQFfN8BQiwBkUTdgnDLtDdkVULvMDzm9AmdYKM/ljCD WPuVhX6m2no/LYJIkVZCreJsDlpkXGEOoh4H6pBaR6XuF1lLMX/urT/ml3EzEZWuMXoI kWxQ== X-Gm-Message-State: AOJu0YzzxLYMTmgtEhfi2ZDFqkC9SUDHOzC6qHm+TJuslgnvwoNUt669 VYtHSKlQqGCAydvXCRvm5/duzXfnpiF9Ruo0vk7KpE0lt2wk1YLaJi3Ph2qHz4+J+m9gSz914g9 aLoUTcWSAKmqYhjCdmfWVIGLqmFQLAjLKoyCO6ckDDxiCblj/yINOLYTyiv7DZSgad2oT+Ga6Kx Q4QKUetiEiasVoUAgsldSZTW2iQ3YwVpzcSttsNTVa3dCPP5jh58oyc0CbMgNvLO0= X-Received: from pgan68.prod.google.com ([2002:a63:4047:0:b0:c85:894e:5b3c]) (user=hramamurthy job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:6005:b0:3b4:661d:8405 with SMTP id adf61e73a8af0-3b47886ce87mr438434637.4.1780336487549; Mon, 01 Jun 2026 10:54:47 -0700 (PDT) Date: Mon, 1 Jun 2026 17:54:32 +0000 In-Reply-To: <20260601175437.3767283-1-hramamurthy@google.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260601175437.3767283-1-hramamurthy@google.com> X-Mailer: git-send-email 2.54.0.1013.g208068f2d8-goog Message-ID: <20260601175437.3767283-11-hramamurthy@google.com> Subject: [PATCH net-next 10/15] gve: add gve_ctrl_ops for gve initialization/teardown sequences From: Harshitha Ramamurthy To: netdev@vger.kernel.org Cc: joshwash@google.com, hramamurthy@google.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, sdf@fomichev.me, willemb@google.com, jordanrhee@google.com, jfraker@google.com, nktgrg@google.com, bpf@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" From: Joshua Washington Driver initialization and teardown involve a number of control plane operations that need to be defined for gve_probe to operate in both mailbox and adminq modes. This list includes: - get_ptype_map: a mapping of packet types (L3+L4) held in RX completion descriptors - configure_rss: set up default RSS configuration if the device is not queryable - setup_stats_report: set up DMA region for stats report (AQ-only) - reset_flow_rules: needed in teardown; flushes all flow rules from device Reviewed-by: Willem de Bruijn Reviewed-by: Jordan Rhee Signed-off-by: Joshua Washington Signed-off-by: Harshitha Ramamurthy --- drivers/net/ethernet/google/gve/gve.h | 12 ++++++++++ drivers/net/ethernet/google/gve/gve_adminq.c | 7 +++--- drivers/net/ethernet/google/gve/gve_adminq.h | 3 +-- drivers/net/ethernet/google/gve/gve_main.c | 24 +++++++++++++++----- 4 files changed, 34 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/google/gve/gve.h b/drivers/net/ethernet/google/gve/gve.h index 442e4622ab76..f8976017ca60 100644 --- a/drivers/net/ethernet/google/gve/gve.h +++ b/drivers/net/ethernet/google/gve/gve.h @@ -835,12 +835,24 @@ struct gve_device_info { * structures stored in @priv to be used during initialization. * @set_num_ntfy_blks: Sets no. of vectors into @priv to be used during * initialization. + * @get_ptype_map: Learn packet type map from device and store it in @priv + * @configure_rss: Set up default RSS configuration + * @setup_stats_report: Set up DMA region for stats report (AdminQ only) + * @reset_flow_rules: Flush all flow rules from device */ struct gve_ctrl_ops { int (*map_db_bar)(struct gve_priv *priv); void (*unmap_db_bar)(struct gve_priv *priv); void (*set_num_queues)(struct gve_priv *priv); int (*set_num_ntfy_blks)(struct gve_priv *priv); + int (*get_ptype_map)(struct gve_priv *priv); + int (*configure_rss)(struct gve_priv *priv, + struct ethtool_rxfh_param *param); + int (*setup_stats_report)(struct gve_priv *priv, + u64 stats_report_len, + dma_addr_t stats_report_addr, + u64 interval_ms); /* AQ-specific */ + int (*reset_flow_rules)(struct gve_priv *priv); }; struct gve_priv { diff --git a/drivers/net/ethernet/google/gve/gve_adminq.c b/drivers/net/ethernet/google/gve/gve_adminq.c index 8f3a4e63cf37..a9752525d974 100644 --- a/drivers/net/ethernet/google/gve/gve_adminq.c +++ b/drivers/net/ethernet/google/gve/gve_adminq.c @@ -1352,8 +1352,7 @@ int gve_adminq_report_nic_ts(struct gve_priv *priv, return gve_adminq_execute_cmd(priv, &cmd); } -int gve_adminq_get_ptype_map_dqo(struct gve_priv *priv, - struct gve_ptype_lut *ptype_lut) +int gve_adminq_get_ptype_map_dqo(struct gve_priv *priv) { struct gve_ptype_map *ptype_map; union gve_adminq_command cmd; @@ -1379,9 +1378,9 @@ int gve_adminq_get_ptype_map_dqo(struct gve_priv *priv, /* Populate ptype_lut. */ for (i = 0; i < GVE_NUM_PTYPES; i++) { - ptype_lut->ptypes[i].l3_type = + priv->ptype_lut_dqo->ptypes[i].l3_type = ptype_map->ptypes[i].l3_type; - ptype_lut->ptypes[i].l4_type = + priv->ptype_lut_dqo->ptypes[i].l4_type = ptype_map->ptypes[i].l4_type; } err: diff --git a/drivers/net/ethernet/google/gve/gve_adminq.h b/drivers/net/ethernet/google/gve/gve_adminq.h index 953da0f2b0e4..e783589c5ed6 100644 --- a/drivers/net/ethernet/google/gve/gve_adminq.h +++ b/drivers/net/ethernet/google/gve/gve_adminq.h @@ -652,8 +652,7 @@ int gve_adminq_report_nic_ts(struct gve_priv *priv, dma_addr_t nic_ts_report_addr); struct gve_ptype_lut; -int gve_adminq_get_ptype_map_dqo(struct gve_priv *priv, - struct gve_ptype_lut *ptype_lut); +int gve_adminq_get_ptype_map_dqo(struct gve_priv *priv); int gve_adminq_map_db_bar(struct gve_priv *priv); void gve_adminq_unmap_db_bar(struct gve_priv *priv); int gve_adminq_set_num_ntfy_blks(struct gve_priv *priv); diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c index f8289f478e5b..06df6d8ad429 100644 --- a/drivers/net/ethernet/google/gve/gve_main.c +++ b/drivers/net/ethernet/google/gve/gve_main.c @@ -649,7 +649,8 @@ static int gve_alloc_control_plane_resources(struct gve_priv *priv) static int gve_setup_control_plane_resources(struct gve_priv *priv) { - int err = 0; + const struct gve_ctrl_ops *ops = priv->ctrl_ops; + int err; err = gve_adminq_configure_device_resources(priv, priv->counter_array_bus, @@ -664,7 +665,7 @@ static int gve_setup_control_plane_resources(struct gve_priv *priv) } if (!gve_is_gqi(priv)) { - err = gve_adminq_get_ptype_map_dqo(priv, priv->ptype_lut_dqo); + err = ops->get_ptype_map(priv); if (err) { dev_err(&priv->pdev->dev, "Failed to get ptype map: err=%d\n", err); @@ -686,12 +687,13 @@ static int gve_setup_control_plane_resources(struct gve_priv *priv) goto teardown_clock; } - err = gve_adminq_report_stats(priv, priv->stats_report_len, + err = ops->setup_stats_report(priv, priv->stats_report_len, priv->stats_report_bus, GVE_STATS_REPORT_TIMER_PERIOD); if (err) dev_err(&priv->pdev->dev, "Failed to report stats: err=%d\n", err); + gve_set_device_resources_ok(priv); return 0; @@ -712,6 +714,7 @@ static int gve_setup_control_plane_resources(struct gve_priv *priv) */ static void gve_teardown_control_plane_resources(struct gve_priv *priv) { + const struct gve_ctrl_ops *ops = priv->ctrl_ops; int err; /* Tell device its resources are being freed */ @@ -721,11 +724,13 @@ static void gve_teardown_control_plane_resources(struct gve_priv *priv) dev_err(&priv->pdev->dev, "Failed to reset flow rules: err=%d\n", err); /* detach the stats report */ - err = gve_adminq_report_stats(priv, 0, 0x0, GVE_STATS_REPORT_TIMER_PERIOD); + err = ops->setup_stats_report(priv, 0, 0x0, + GVE_STATS_REPORT_TIMER_PERIOD); if (err) dev_err(&priv->pdev->dev, "Failed to detach stats report: err=%d\n", err); gve_teardown_clock(priv); + err = gve_adminq_deconfigure_device_resources(priv); if (err) dev_err(&priv->pdev->dev, @@ -1811,6 +1816,7 @@ static int gve_xdp(struct net_device *dev, struct netdev_bpf *xdp) int gve_init_rss_config(struct gve_priv *priv, u16 num_queues) { + const struct gve_ctrl_ops *ops = priv->ctrl_ops; struct gve_rss_config *rss_config = &priv->rss_config; struct ethtool_rxfh_param rxfh = {0}; u16 i; @@ -1826,15 +1832,17 @@ int gve_init_rss_config(struct gve_priv *priv, u16 num_queues) rxfh.hfunc = ETH_RSS_HASH_TOP; - return gve_adminq_configure_rss(priv, &rxfh); + return ops->configure_rss(priv, &rxfh); } int gve_flow_rules_reset(struct gve_priv *priv) { + const struct gve_ctrl_ops *ops = priv->ctrl_ops; + if (!priv->max_flow_rules) return 0; - return gve_adminq_reset_flow_rules(priv); + return ops->reset_flow_rules(priv); } int gve_adjust_config(struct gve_priv *priv, @@ -2469,6 +2477,10 @@ static const struct gve_ctrl_ops gve_adminq_ops = { .unmap_db_bar = gve_adminq_unmap_db_bar, .set_num_queues = gve_adminq_set_num_queues, .set_num_ntfy_blks = gve_adminq_set_num_ntfy_blks, + .get_ptype_map = gve_adminq_get_ptype_map_dqo, + .reset_flow_rules = gve_adminq_reset_flow_rules, + .setup_stats_report = gve_adminq_report_stats, + .configure_rss = gve_adminq_configure_rss, }; static int gve_init_priv(struct gve_priv *priv) -- 2.54.0.669.g59709faab0-goog