From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 CFD9A1EFF9F for ; Sat, 12 Jul 2025 10:07:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752314850; cv=none; b=Dg0rG9/GjtSNDD/PUt9JMyoMLJ3oG7CWvcdI1MC5LHNXgupbI07GRwsIjldNWTae8KUan/aO+K2I3zDlcinKQbtPGhP+plltXzvPpXUrWULiBuHIwGOAABKN5M1kH3oVj6d0k/+qESB593XT/etYS3BKrAvGoCTsLehrsHni+oI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752314850; c=relaxed/simple; bh=TSgntFvzr417mI13H6PTNr1hCaOX+YBqsxPHSlM77Ko=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=cH3Nozq9TI6VzJ5YSMLKg78B73O9ve1JawSmsGdXkaS8aea+kxqEGTl51Uyh3fa0dTYmiPrnlXrDgGTqlUPjbkArsD5dSFbI8kqSl3cwVl/ojGLsuNQ7y7eaX0kDITsSYZ/2rIMQNMFZC6mDWT4M2i5tCopGSRmlvqqUegAR6iI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=EDnmtcw1; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="EDnmtcw1" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1752314846; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=1JlNlY2tra3Y/oEZeo/U+AdvcEDBVVOybPTu1N4/msQ=; b=EDnmtcw1METOqLJk+bCeqm0krIW9+/zqbb8oittNdLHEozVG8HWlj3zI7j03FWCq3yBcsz u7Uwz8AoY2HlrHn2piePbtNQ6t8Vm6oM/pd+2Duckj2aT3orTGaH3zu8KbZ0NWs+xcYC2c cMetGDNd2KVAxSR9JbhCQyd3nf2j2MU= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-82-3-4kF6wINMOowt8-iPjmsw-1; Sat, 12 Jul 2025 06:07:25 -0400 X-MC-Unique: 3-4kF6wINMOowt8-iPjmsw-1 X-Mimecast-MFC-AGG-ID: 3-4kF6wINMOowt8-iPjmsw_1752314844 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id D6A211956086; Sat, 12 Jul 2025 10:07:23 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.72.116.11]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 75F1D1956094; Sat, 12 Jul 2025 10:07:18 +0000 (UTC) From: Li Tian To: netdev@vger.kernel.org, linux-hyperv@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Haiyang Zhang , Dexuan Cui , Stephen Hemminger , Long Li Subject: [PATCH net v3] hv_netvsc: Set VF priv_flags to IFF_NO_ADDRCONF before open to prevent IPv6 addrconf Date: Sat, 12 Jul 2025 18:07:08 +0800 Message-ID: <20250712100716.3991-1-litian@redhat.com> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Set an additional flag IFF_NO_ADDRCONF to prevent ipv6 addrconf. Commit 8a321cf7becc ("net: add IFF_NO_ADDRCONF and use it in bonding to prevent ipv6 addrconf") This new flag change was not made to hv_netvsc resulting in the VF being assinged an IPv6. Fixes: 8a321cf7becc ("net: add IFF_NO_ADDRCONF and use it in bonding to prevent ipv6 addrconf") Suggested-by: Cathy Avery Signed-off-by: Li Tian --- v3: - only fix commit message. v2: https://lore.kernel.org/netdev/20250710024603.10162-1-litian@redhat.com/ - instead of replacing flag, add it. v1: https://lore.kernel.org/netdev/20250710024603.10162-1-litian@redhat.com/ --- drivers/net/hyperv/netvsc_drv.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index c41a025c66f0..8be9bce66a4e 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -2317,8 +2317,11 @@ static int netvsc_prepare_bonding(struct net_device *vf_netdev) if (!ndev) return NOTIFY_DONE; - /* set slave flag before open to prevent IPv6 addrconf */ + /* Set slave flag and no addrconf flag before open + * to prevent IPv6 addrconf. + */ vf_netdev->flags |= IFF_SLAVE; + vf_netdev->priv_flags |= IFF_NO_ADDRCONF; return NOTIFY_DONE; } -- 2.50.0