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 2184211CA9 for ; Wed, 16 Jul 2025 00:26:20 +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=1752625582; cv=none; b=Z+PVZ3+Lx5sD4uiv+LQdgFxoQ6EU3gASimiYuIA2HDiJWDm2o5S5QKcu+oZs7tBUnbtZdQzGd9QC93sacI7xgyS0jD6JAKoEwMe6MhH+kpJgITO3m2LH45IMujvpwpl90132MRdEXaY65bRqfGCWWpXkTu5jW8ElMmVG2sXtE3w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752625582; c=relaxed/simple; bh=PNMSNhGTqYtxYIU/awGFqnGG3CMyqS2mKddMzgIHmc8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=A31QH8IX3l5nkXpwr38SF5op94rIRgjXnuyd5a4iP5nPHszZ1Fw8gU9SIP5x8pl+l3rrxNFXzJUQYD+MnUA5iJ3z49a+KNueMDS47pLa5IRzyaet1W7lDrc/XLk+tPrD5Fc3HF54fVjhSmPiPz+4FFzYqrr61F42NP9fbUx1kO4= 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=hNrljmOs; 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="hNrljmOs" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1752625580; 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=bJN0js1mXFtPosWS7Mr0CZxy87n73HJjlADNnzxbL/Y=; b=hNrljmOsfkr8688o1gyRG7hX5LqrhBNwdV0WJMdso70pFWx9HlV+g5R7bnVdwLNLfjdLNz JhWzOsE+tjsoVKIEKCcUfKqOhQx4EO4oFQwU0ao7SQdXY3F6ne2AgavVfzF38Ht3MtbVmh swzTtMQtDg8IOwTQkdgYbhobfXQG1hg= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-508-MnMiEhQwMyOfLCSitGfOUw-1; Tue, 15 Jul 2025 20:26:16 -0400 X-MC-Unique: MnMiEhQwMyOfLCSitGfOUw-1 X-Mimecast-MFC-AGG-ID: MnMiEhQwMyOfLCSitGfOUw_1752625575 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (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-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 387C11800366; Wed, 16 Jul 2025 00:26:15 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.72.112.44]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 380F8180035E; Wed, 16 Jul 2025 00:26:09 +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 v3] hv_netvsc: Set VF priv_flags to IFF_NO_ADDRCONF before open to prevent IPv6 addrconf Date: Wed, 16 Jul 2025 08:26:05 +0800 Message-ID: <20250716002607.4927-1-litian@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Set an additional flag IFF_NO_ADDRCONF to prevent ipv6 addrconf. Commit under Fixes added a new flag change that 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 fixes 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