From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-185.mta0.migadu.com (out-185.mta0.migadu.com [91.218.175.185]) (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 7E698314B63 for ; Wed, 1 Jul 2026 20:55:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.185 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782939313; cv=none; b=sV+7K6quXhMYtuM+5qZCj5HLuEjoTYuXgGGEb3212ohzzuVEpmutHldd98MIHv85N9fpZb9kSiuoz50QhT4UNrfpf3DehmSV5msP6CzLda1lXABFnjt5vZQsDqdEat8Phf//11gX8UrZhAGmzrgkSd5S/VRQiaQdJ7k5FgF4KvM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782939313; c=relaxed/simple; bh=LB6UO3uezZpO6it+CrKAe8HgcrZ0JiGiz98PKAPxh4U=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=i3eo39+ubuk/CDoF+I7mMv2CQTbz1zTmdVrL1eRRHSFS1WOpfiYVy1dMwEvj+nf65mLUZ5WIG31NIJu3nQ3mNI3yI5wSwvzjX9usdA9mZ6tlcmwCEPozDxRc2Y2IGGFcxicAHDjLtLtOvLZ7rJynYjD2iWSPmvyeVc5A1P4iIo0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=BYxWeL6n; arc=none smtp.client-ip=91.218.175.185 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="BYxWeL6n" Message-ID: <045799ad-5e9f-4053-97b9-be78e8dfa8f3@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1782939309; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IKuLmZ2IJLArE5GjcIWFvuYskuJbGafICyJK3gU7OZQ=; b=BYxWeL6n9DykFUvm+8RXBJvEC7f40rgCWc0a/kXSseB0ngCNOw9Zu9ZreZyoFmKn+H00mA Ni9NczkR0+Y6EJnQtzsDRJycH3L2qMtaPObviRr0tQ/NF/dMgVPAmRH7X5sguztIRedCgB UaO5+Vqbuh5PapeT3NOV2OCYoTqNZKo= Date: Wed, 1 Jul 2026 21:55:00 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH net-next 2/3] net: ipv6: report multicast group user count To: Yuyang Huang Cc: "David S. Miller" , Andrew Lunn , David Ahern , Donald Hunter , Eric Dumazet , Ido Schimmel , Jakub Kicinski , Paolo Abeni , Shuah Khan , Simon Horman , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, netdev@vger.kernel.org References: <20260630110207.37841-1-sigefriedhyy@gmail.com> <20260630110207.37841-3-sigefriedhyy@gmail.com> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Vadim Fedorenko In-Reply-To: <20260630110207.37841-3-sigefriedhyy@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT On 30/06/2026 12:02, Yuyang Huang wrote: > The previous patch added IFA_MC_USERS and emits it for IPv4 multicast > groups. Add the same snapshot attribute to IPv6 RTM_GETMULTICAST > replies and entry-lifecycle notifications, carrying > ifmcaddr6::mca_users. > > This makes the multicast rtnetlink ABI symmetric across IPv4 and IPv6 > and gives userspace the same user count that /proc/net/igmp6 exposes. > > Signed-off-by: Yuyang Huang Reviewed-by: Vadim Fedorenko