From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) (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 0DA673BC68C for ; Mon, 23 Mar 2026 16:12:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774282370; cv=none; b=tCkDXRnde5MECw4xXRcpUki/I9UkNVeH4Q7YkCdz/uXGGtcfp4XBWgnaH5C3aqMI4MwLb6wkHuI7PCQ931r6N3BkPRGT9sgOhwQ3mh1HnrS8Ie7z3dI0RzqP2ZiVk0SC/3EfAIjr4SytkwcmUWb76jOzS5a8YqXOVuCm0BAstnc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774282370; c=relaxed/simple; bh=VOFUyeohAJ07OONVhdkNQ8waaN87UYJH1sjvCbOQG3g=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PrPLHmFl6xfGyFr+klBLaIx24/bTJPx1xzGJH+McubZnrCayrKZlwAueWfUl+zAmoyIvGtLJxoeKRgy5lFBiK0NNf10TNC+HAhfK4sD8r32V9hwHrzp1LDK9B+JXk6J3FAlXMX7i6AfKuRfjUdPTfBL02MVCHN+sVNN/TEjxO/w= 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=hMScEXi5; arc=none smtp.client-ip=209.85.128.53 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="hMScEXi5" Received: by mail-wm1-f53.google.com with SMTP id 5b1f17b1804b1-4836cd6e0d4so5707075e9.3 for ; Mon, 23 Mar 2026 09:12:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1774282367; x=1774887167; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=VOFUyeohAJ07OONVhdkNQ8waaN87UYJH1sjvCbOQG3g=; b=hMScEXi5oDc/Q9cO5lVi7FeYllwzX3sPXhHM2aifh9ArFcI614Y0dSnIm92CzK4gMx Gd9dZqvXvSncME7f/3KZ+RbeiWq8ehwqg5OR2iPqxHAXq2S8IFa4FfiK40wLAnuPovw2 Pn3MIr8bf2kwQ8hTQTgsXDiOtmxG3q7CD6t9CbrCtQYyfM9ILqCs+RcMxUKaac5Ca8hG X7ce8munO36jPAGRwn27WmBrs+IF/i4TqFhCAiQmWzKy8sOGsBK2cOALrzuh5ZanbEWD WLrqqztfOb3734r/pz4fLcwaT/mgtj9kwOYf30FXbjMf4yfJLzS+/m2TeP1KrsH409Ll E71A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774282367; x=1774887167; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=VOFUyeohAJ07OONVhdkNQ8waaN87UYJH1sjvCbOQG3g=; b=l+RxKF+oyE42bZgQra66bl+Kcd1d9rfvKVNrO2wGPsDj//SFdHS1jnU2D67FCtlNtG XgR53+eH/CldtlerFYvH9vpw+y/XVD05kNStfKQcMFO04upXT5G+eCoTh8Q7+Yvr36PN Qw9dBCLn68jgy4JIvN9Gu1NhRXoKud3YA9s3l9p1VK8fpeoYMSR9Vz0tHkIxP3AhvKnj K4iJ9+oxGKeVTojg87sRil2Upi8gnRG/r7Z/wigjTUPsSGASiH6sPb7GJhXGp6ObVBBM 3Za1qx+BUf2cp1Q/UjVSnSX3RFFgAN+kTyP+r10wqME1EJl5SIcnQbZgybYYH0jdnO8U S3iQ== X-Forwarded-Encrypted: i=1; AJvYcCW2ep8PNeIgspkFCZ8/iaedLrOhMKvp4lQ4ZuyjIpEMxtnEANYZLoP81CNd6zEJZwlfFUiqzc4uSHi7UQM=@vger.kernel.org X-Gm-Message-State: AOJu0YwbnMquJqKuHv7FTvqEKYpOGbOtjZ4JYxKcR7v3LjTHkDGSEe25 sZ/F/wk8puTT69p6crufH2qzdPhA7Y35rqVnX01njrGGSGX/lgRWFJIy X-Gm-Gg: ATEYQzwOoSjDn60+xOSv5ot1ZOZqfXWqigVlTPdqw9Fa0CzmLNISRHQdH8J9Wls0OHu p680L5lWONUPYZ80LL67Xq0jUb9vlsnRxwKCjAZPXi3JSViSlINWxNvc2T4Hz64X6i5fxmFV3Hi DkMQJVU7NQ8mNvRBRJdsgBcKKMsLSUYWPyl+5vhgbws4EdWWTkGCE6NGIK7Rjpprl0SHUifBc58 Ar3WaXba4afsqqqpQXpgUbJBdvt9F++qnhHJvb+dlTGV10ufTJawfxQR1ihRxPW2HoLo/34UWYR VnbqI7qcFIZtVXUOP2jnQkg919fTgQSBxMyJAx4NEKloWTDp021+liPfq0z7AauZW5RErLiZXm6 f0cX3tkw/zIJwJVIlsV02PHB3P6SJzF03BrvnGTTQ4jlW8r2fbrly2tJli6OT/hHfGbMXzFAPHB gJnE+hcZsuKX9/yTM= X-Received: by 2002:a05:600c:1f86:b0:477:9c9e:ec7e with SMTP id 5b1f17b1804b1-486fee2e4efmr94768485e9.6.1774282367163; Mon, 23 Mar 2026 09:12:47 -0700 (PDT) Received: from skbuf ([2a02:2f04:d50a:b400:653e:51cc:7cba:e6df]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-486fe889652sm117964405e9.2.2026.03.23.09.12.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Mar 2026 09:12:46 -0700 (PDT) Date: Mon, 23 Mar 2026 18:12:42 +0200 From: Vladimir Oltean To: Daniel Golle Cc: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Russell King , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Frank Wunderlich , Chad Monroe , Cezary Wilmanski , Liang Xu , "Benny (Ying-Tsan) Weng" , Jose Maria Verdu Munoz , Avinash Jayaraman , John Crispin Subject: Re: [PATCH net-next v6 1/4] net: dsa: add driver-private pointer to struct dsa_bridge Message-ID: <20260323161242.52u35huiot3khq5w@skbuf> References: <4ff5b936b1f4ad31ffe132aaef798d247a8ac812.1774136876.git.daniel@makrotopia.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4ff5b936b1f4ad31ffe132aaef798d247a8ac812.1774136876.git.daniel@makrotopia.org> On Sun, Mar 22, 2026 at 12:18:58AM +0000, Daniel Golle wrote: > When a DSA driver offloads a bridge to firmware, it typically receives a > firmware-assigned bridge identifier (e.g. a FID) that must be stored and > retrieved by subsequent operations. Without a place to store this in the > DSA core's bridge structure, drivers must maintain a parallel list of > bridge objects and search it on every join, leave, and FDB operation. Why list? What's wrong with a driver-level array for lookup? The bridge.num is guaranteed to be between 1 and ds->max_num_bridges.