From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B48FF1E25E8 for ; Wed, 9 Jul 2025 03:05:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752030315; cv=none; b=JC69ekkpkTKyiLbHuWf5DMGOuJrHlfgXkV/QLJjBRQD0rG2Fg79N9pwnl2m2nzZWgwdUAE06lK9YRJ9JNAgcFtyoxcN61HHrrvlj8QoOor1x1LogK+xNSAyhl8Rx+kZsdzW1r0dZYhAurQ731USFzH2DiPbZ8fGdyb01Cn9qp8U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752030315; c=relaxed/simple; bh=DXqVxuYIAEa90ZYYRbvgMVMEobADNe0MEGhKuAHCwpU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nhLe03EIra1qzI3pCtm616gmuK+v/bO8bVYFOPWmKz0yOHFPojoG4PPqZyyaP8NwY9Hd6YYgwfkHP7B8yZnYaZJb26zh/5AnlmOkkEQc4h26DEK47LkcdYO+T0DPKiu2CCFj3JVPgNAQB0aHuS8OcdBl/k/j5AHenVAtF4/njnM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Y3SgDsdq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Y3SgDsdq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 49161C4CEF0; Wed, 9 Jul 2025 03:05:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752030315; bh=DXqVxuYIAEa90ZYYRbvgMVMEobADNe0MEGhKuAHCwpU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y3SgDsdqKmfKac3R2C8VdAn4tbXcNcbGYHtVtUAaFeFxA4UjC2jTiY9ygWbzJWDXL fa5jZDCqLSav9cH6Gb8vW8K5QymZI1l6H/VSoCJIcs/a+R4CzRZO/CJAG8sIM5BIU7 Hgq9/mZZBkuvnwxQ6b1JBzeMLOOgurWBEGaNQFzUafhs0lfewze829wJn9gsAdybDn tkY4jZf0rGoWLkAf95+JfbDyXFttpAhRAtt0TJJddmM4DP80e++GUNGbl//E1rTiaD oTd0OMGJSPCVcZ67tUNGcvpAgm0MZzczND1hQS1zbnz0B191dBU1GBRL38C2f+DU/C B8U7Rr83RIDgQ== From: Saeed Mahameed To: "David S. Miller" , Jakub Kicinski , Paolo Abeni , Eric Dumazet Cc: Saeed Mahameed , netdev@vger.kernel.org, Tariq Toukan , Gal Pressman , Leon Romanovsky , Jiri Pirko , Simon Horman Subject: [PATCH net-next V6 09/13] devlink: Add 'keep_link_up' generic devlink device param Date: Tue, 8 Jul 2025 20:04:51 -0700 Message-ID: <20250709030456.1290841-10-saeed@kernel.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250709030456.1290841-1-saeed@kernel.org> References: <20250709030456.1290841-1-saeed@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Saeed Mahameed Devices that support this in permanent mode will be requested to keep the port link up even when driver is not loaded, netdev carrier state won't affect the physical port link state. This is useful for when the link is needed to access onboard management such as BMC, even if the host driver isn't loaded. Reviewed-by: Jiri Pirko Signed-off-by: Saeed Mahameed --- Documentation/networking/devlink/devlink-params.rst | 4 ++++ include/net/devlink.h | 4 ++++ net/devlink/param.c | 4 ++++ 3 files changed, 12 insertions(+) diff --git a/Documentation/networking/devlink/devlink-params.rst b/Documentation/networking/devlink/devlink-params.rst index f2920371622c..0e9c0e17573d 100644 --- a/Documentation/networking/devlink/devlink-params.rst +++ b/Documentation/networking/devlink/devlink-params.rst @@ -143,3 +143,7 @@ own name. * - ``total_vfs`` - u32 - The total number of Virtual Functions (VFs) supported by the PF. + * - ``keep_link_up`` + - Boolean + - When enabled, the device will keep the port link up even if the driver is + not loaded. diff --git a/include/net/devlink.h b/include/net/devlink.h index b2517813ce17..13331194e143 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -526,6 +526,7 @@ enum devlink_param_generic_id { DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE, DEVLINK_PARAM_GENERIC_ID_ENABLE_PHC, DEVLINK_PARAM_GENERIC_ID_TOTAL_VFS, + DEVLINK_PARAM_GENERIC_ID_KEEP_LINK_UP, /* add new param generic ids above here*/ __DEVLINK_PARAM_GENERIC_ID_MAX, @@ -590,6 +591,9 @@ enum devlink_param_generic_id { #define DEVLINK_PARAM_GENERIC_TOTAL_VFS_NAME "total_vfs" #define DEVLINK_PARAM_GENERIC_TOTAL_VFS_TYPE DEVLINK_PARAM_TYPE_U32 +#define DEVLINK_PARAM_GENERIC_KEEP_LINK_UP_NAME "keep_link_up" +#define DEVLINK_PARAM_GENERIC_KEEP_LINK_UP_TYPE DEVLINK_PARAM_TYPE_BOOL + #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate) \ { \ .id = DEVLINK_PARAM_GENERIC_ID_##_id, \ diff --git a/net/devlink/param.c b/net/devlink/param.c index 5f9cd492e40c..2a222d1bf81c 100644 --- a/net/devlink/param.c +++ b/net/devlink/param.c @@ -102,6 +102,10 @@ static const struct devlink_param devlink_param_generic[] = { .name = DEVLINK_PARAM_GENERIC_TOTAL_VFS_NAME, .type = DEVLINK_PARAM_GENERIC_TOTAL_VFS_TYPE, }, + { .id = DEVLINK_PARAM_GENERIC_ID_KEEP_LINK_UP, + .name = DEVLINK_PARAM_GENERIC_KEEP_LINK_UP_NAME, + .type = DEVLINK_PARAM_GENERIC_KEEP_LINK_UP_TYPE, + }, }; static int devlink_param_generic_verify(const struct devlink_param *param) -- 2.50.0