From nobody Thu Dec 18 00:09:15 2025 Received: from mail-wr1-f50.google.com (mail-wr1-f50.google.com [209.85.221.50]) (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 0D70330F923 for ; Mon, 13 Oct 2025 14:53:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.50 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760367218; cv=none; b=KgC7IXLB8SV0RnkmmCIk0UaN1miAtr5E80bYIVKDNmqMl6EFqips2Cklpd31zTkfMRcXQI7QNbfN59hhOq8UjW+BqEkvb/oyERQBTnsbzNy9v5xqAx+YHuhn7BG4ivqxWs6eA3PsP88Z14PmXgWqUKtsQt0YT0/G9dZYqF8h+kc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760367218; c=relaxed/simple; bh=PbuNSYS4ZvphCG8IIqw5e2RtAOtPsOlFF3aKC+mIwRo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ILUasU+dtxjF7jnNV1PNc7Qwh848xnj0p7iA304yOz2uKENfP4tdpr8h7OtGEAv7J5YJdZzBH9cDi8owHXg+57pgz9uv8gpgYoyntsjS7Fvqx1GT4/FAxq0wF3FIQLK1pMCm3tsmehCKDv/zSxPSvDFflfg3FtsuTQd4106fv3o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Sc9l9MkZ; arc=none smtp.client-ip=209.85.221.50 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Sc9l9MkZ" Received: by mail-wr1-f50.google.com with SMTP id ffacd0b85a97d-42557c5cedcso2328753f8f.0 for ; Mon, 13 Oct 2025 07:53:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1760367214; x=1760972014; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=qRwTRM1YMVNfPJcUo8UFI2K+NlERkppykhGVZsYyCi8=; b=Sc9l9MkZ3jsGmKuzKFJ+WZzEdPxLvhnRI8KiyXKOgbVGZwAcnRqNP2Ec0LNq1zZ7md Mgq4VfOY21/tdd8fUZAVvlBcnBPIvU/xKZUYZw+ZPbW3jqi0ybSXxiN+ADp6xSnfF0c8 aJnV60/1bMla5WqYSH4g+oYgHEAmF0gsmgDAAfe1RLWuoaUpKKPAQ5I5cdOiUCwWuK9J /sEwPMpYtXR5vCLJYbNm1CJS1DaJGx8PL8Apt906L1RQYAMoXgFTCXplecSj7VXQf7fF 5J2uOwtwVSGXxOVIYxD+8NSZxxxZ80vhkwxl2ojns6ifMWP5ALcdJlIftTQJE/D3aG58 7pnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760367214; x=1760972014; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=qRwTRM1YMVNfPJcUo8UFI2K+NlERkppykhGVZsYyCi8=; b=k868Fucacj/za17otwkgXEbHoul4c14q8oVzBbZXnJQ1sVbCCCutitVDXj5O1MGQDo ChUjBMbYOnYc8BoQjGN1jnLefp0pI8HqGCheGNWx39wZXrQXFE48X/XGTUhDHJybDIEH N7g3Pg62KYMhwMFy7uRKLXmw4XNNUIYpzjPRT/pIfRFVv0achGoX4DD0KdK+TXfrZBwB ZlFe60VINeuN5YzAHFZjt2EnmPlJ7odIh7Vi980Vek8I6xuSV8h1Ers95RFQtwTMYoxJ x4gxEyJV01+Nz/s4RyrfhrcIrRSQLR6oi9tuxEdRPDpHtcbM1/4VvZk+xbHY5FwG869D 5s7w== X-Forwarded-Encrypted: i=1; AJvYcCUP5MPXxm4ss/YoDdZv40sZMAu1pqSbEHc0i3dOZwqjL2y6C321MOBECthdO7Jas2NdUhNf8qUnwMCNK2I=@vger.kernel.org X-Gm-Message-State: AOJu0YwENxqPsjwr1NqM2LP61I2cBoNv0NZPagLRUGvSyGX2avyANEPG m+8q6GJBa8UyuyW4bZOJN3eqTHy/GZHC+vHvs9/PFqxANoAzgqutQM0r X-Gm-Gg: ASbGncuI+0UbjH0UqueRlpfcaGRd2gPNNef66Ap3BCjKkEWA11Lt4ulWZ4QUHLWv9BQ TXFSpGBoQHirZbB4f4vAYaEguGuafqBRbrudkJs81Yn9g4BZJq8Yau/Ms3TkiSR+D+nlxV73WHp nvZSdS9m6W9gGH6KShYsGJJdBzAHLHnpNrWHKJzHss3YjJpzQCU1qBzaqb1BHz2Z4HU9W325txM 0QSofw01anG9rEHZTRrB2oKLJ7ZjyTCMfJ6dM/kFnAkUf55rzKowokm948sdpUaSEkSfwkcYxnR IAD8fGRLNvTI2wtQjMJ6v73JO5s/3SFg+9o9J1/807kY5rIvxm1MC+F3wGPjqscvhk3V/1E1hKY 4hGe9wfdzYu6+NiH6223Ln8Ta1IvvKT3FeJk= X-Google-Smtp-Source: AGHT+IHmUh7f1JWY1Bn/xnAz1OdnLNh1wSTUkKJWaDX80Ssi4DYZzLpugyxu+bw4gsN3KGpLNos3vw== X-Received: by 2002:a05:6000:4901:b0:426:d5bf:aa7 with SMTP id ffacd0b85a97d-426d5bf0c0bmr6709517f8f.63.1760367214055; Mon, 13 Oct 2025 07:53:34 -0700 (PDT) Received: from 127.com ([2620:10d:c092:600::1:eb09]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-426ce5e0e70sm18641085f8f.40.2025.10.13.07.53.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Oct 2025 07:53:33 -0700 (PDT) From: Pavel Begunkov To: netdev@vger.kernel.org Cc: Andrew Lunn , Jakub Kicinski , davem@davemloft.net, Eric Dumazet , Paolo Abeni , Simon Horman , Donald Hunter , Michael Chan , Pavan Chebbi , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Joshua Washington , Harshitha Ramamurthy , Jian Shen , Salil Mehta , Jijie Shao , Sunil Goutham , Geetha sowjanya , Subbaraya Sundeep , hariprasad , Bharat Bhushan , Saeed Mahameed , Tariq Toukan , Mark Bloch , Leon Romanovsky , Alexander Duyck , kernel-team@meta.com, Ilias Apalodimas , Joe Damato , David Wei , Willem de Bruijn , Mina Almasry , Pavel Begunkov , Breno Leitao , Dragos Tatulea , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-rdma@vger.kernel.org, Jonathan Corbet Subject: [PATCH net-next v4 07/24] net: add rx_buf_len to netdev config Date: Mon, 13 Oct 2025 15:54:09 +0100 Message-ID: X-Mailer: git-send-email 2.49.0 In-Reply-To: References: 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" From: Jakub Kicinski Add rx_buf_len to configuration maintained by the core. Use "three-state" semantics where 0 means "driver default". Signed-off-by: Jakub Kicinski Reviewed-by: Mina Almasry Signed-off-by: Pavel Begunkov --- include/net/netdev_queues.h | 4 ++++ net/ethtool/common.c | 1 + net/ethtool/rings.c | 2 ++ 3 files changed, 7 insertions(+) diff --git a/include/net/netdev_queues.h b/include/net/netdev_queues.h index 9d5dde36c2e5..31559f2711de 100644 --- a/include/net/netdev_queues.h +++ b/include/net/netdev_queues.h @@ -25,6 +25,10 @@ struct netdev_config { * If "unset" driver is free to decide, and may change its choice * as other parameters change. */ + /** @rx_buf_len: Size of buffers on the Rx ring + * (ETHTOOL_A_RINGS_RX_BUF_LEN). + */ + u32 rx_buf_len; /** @hds_config: HDS enabled (ETHTOOL_A_RINGS_TCP_DATA_SPLIT). */ u8 hds_config; diff --git a/net/ethtool/common.c b/net/ethtool/common.c index eeb257d9ab48..2f05359d9782 100644 --- a/net/ethtool/common.c +++ b/net/ethtool/common.c @@ -909,6 +909,7 @@ void ethtool_ringparam_get_cfg(struct net_device *dev, =20 /* Driver gives us current state, we want to return current config */ kparam->tcp_data_split =3D dev->cfg->hds_config; + kparam->rx_buf_len =3D dev->cfg->rx_buf_len; } =20 static void ethtool_init_tsinfo(struct kernel_ethtool_ts_info *info) diff --git a/net/ethtool/rings.c b/net/ethtool/rings.c index 628546a1827b..6a74e7e4064e 100644 --- a/net/ethtool/rings.c +++ b/net/ethtool/rings.c @@ -41,6 +41,7 @@ static int rings_prepare_data(const struct ethnl_req_info= *req_base, return ret; =20 data->kernel_ringparam.tcp_data_split =3D dev->cfg->hds_config; + data->kernel_ringparam.rx_buf_len =3D dev->cfg->rx_buf_len; data->kernel_ringparam.hds_thresh =3D dev->cfg->hds_thresh; =20 dev->ethtool_ops->get_ringparam(dev, &data->ringparam, @@ -302,6 +303,7 @@ ethnl_set_rings(struct ethnl_req_info *req_info, struct= genl_info *info) return -EINVAL; } =20 + dev->cfg_pending->rx_buf_len =3D kernel_ringparam.rx_buf_len; dev->cfg_pending->hds_config =3D kernel_ringparam.tcp_data_split; dev->cfg_pending->hds_thresh =3D kernel_ringparam.hds_thresh; =20 --=20 2.49.0