From 0655f6a8635b1b66f2434d5556b1044c14b1ccaf Mon Sep 17 00:00:00 2001 From: Richard Alpe Date: Thu, 20 Nov 2014 10:29:07 +0100 Subject: tipc: add bearer disable/enable to new netlink api A new netlink API for tipc that can disable or enable a tipc bearer. The new API is separated from the old API because of a bug in the user space client (tipc-config). The problem is that older versions of tipc-config has a very low receive limit and adding commands to the legacy genl_opts struct causes the ctrl_getfamily() response message to grow, subsequently breaking the tool. The new API utilizes netlink policies for input validation. Where the top-level netlink attributes are tipc-logical entities, like bearer. The top level entities then contain nested attributes. In this case a name, nested link properties and a domain. Netlink commands implemented in this patch: TIPC_NL_BEARER_ENABLE TIPC_NL_BEARER_DISABLE Netlink logical layout of bearer enable message: -> bearer -> name [ -> domain ] [ -> properties -> priority ] Netlink logical layout of bearer disable message: -> bearer -> name Signed-off-by: Richard Alpe Reviewed-by: Erik Hugne Reviewed-by: Jon Maloy Acked-by: Ying Xue Signed-off-by: David S. Miller --- net/tipc/netlink.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 net/tipc/netlink.h (limited to 'net/tipc/netlink.h') diff --git a/net/tipc/netlink.h b/net/tipc/netlink.h new file mode 100644 index 000000000000..e9980c0e2207 --- /dev/null +++ b/net/tipc/netlink.h @@ -0,0 +1,41 @@ +/* + * net/tipc/netlink.h: Include file for TIPC netlink code + * + * Copyright (c) 2014, Ericsson AB + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _TIPC_NETLINK_H +#define _TIPC_NETLINK_H + +extern struct genl_family tipc_genl_v2_family; + +#endif -- cgit v1.2.3