2006-01-02 21:04:38 +03:00
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/*
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* net/tipc/name_table.h: Include file for TIPC name table code
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2007-02-09 17:25:21 +03:00
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*
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2015-02-05 16:36:44 +03:00
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* Copyright (c) 2000-2006, 2014-2015, Ericsson AB
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2011-05-30 18:48:48 +04:00
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* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
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2006-01-02 21:04:38 +03:00
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* All rights reserved.
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*
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2006-01-11 15:30:43 +03:00
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* Redistribution and use in source and binary forms, with or without
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2006-01-02 21:04:38 +03:00
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* modification, are permitted provided that the following conditions are met:
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*
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2006-01-11 15:30:43 +03:00
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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2006-01-02 21:04:38 +03:00
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*
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2006-01-11 15:30:43 +03:00
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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2006-01-02 21:04:38 +03:00
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TIPC_NAME_TABLE_H
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#define _TIPC_NAME_TABLE_H
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2011-12-30 05:43:44 +04:00
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struct tipc_subscription;
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2015-02-05 16:36:43 +03:00
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struct tipc_plist;
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2017-01-18 21:50:51 +03:00
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struct tipc_nlist;
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tipc: introduce communication groups
As a preparation for introducing flow control for multicast and datagram
messaging we need a more strictly defined framework than we have now. A
socket must be able keep track of exactly how many and which other
sockets it is allowed to communicate with at any moment, and keep the
necessary state for those.
We therefore introduce a new concept we have named Communication Group.
Sockets can join a group via a new setsockopt() call TIPC_GROUP_JOIN.
The call takes four parameters: 'type' serves as group identifier,
'instance' serves as an logical member identifier, and 'scope' indicates
the visibility of the group (node/cluster/zone). Finally, 'flags' makes
it possible to set certain properties for the member. For now, there is
only one flag, indicating if the creator of the socket wants to receive
a copy of broadcast or multicast messages it is sending via the socket,
and if wants to be eligible as destination for its own anycasts.
A group is closed, i.e., sockets which have not joined a group will
not be able to send messages to or receive messages from members of
the group, and vice versa.
Any member of a group can send multicast ('group broadcast') messages
to all group members, optionally including itself, using the primitive
send(). The messages are received via the recvmsg() primitive. A socket
can only be member of one group at a time.
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-13 12:04:23 +03:00
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struct tipc_group;
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2006-01-02 21:04:38 +03:00
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/*
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* TIPC name types reserved for internal TIPC use (both current and planned)
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*/
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2014-12-02 10:00:24 +03:00
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#define TIPC_ZM_SRV 3 /* zone master service name type */
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#define TIPC_PUBL_SCOPE_NUM (TIPC_NODE_SCOPE + 1)
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#define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */
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2006-01-02 21:04:38 +03:00
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/**
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* struct publication - info about a published (name or) name sequence
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* @type: name sequence type
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* @lower: name sequence lower bound
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* @upper: name sequence upper bound
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* @scope: scope of publication
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* @node: network address of publishing port's node
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* @ref: publishing port
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* @key: publication key
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2014-11-26 06:41:45 +03:00
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* @nodesub_list: subscription to "node down" event (off-node publication only)
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2006-01-02 21:04:38 +03:00
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* @local_list: adjacent entries in list of publications made by this node
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* @pport_list: adjacent entries in list of publications made by this port
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2011-05-30 18:48:48 +04:00
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* @node_list: adjacent matching name seq publications with >= node scope
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* @cluster_list: adjacent matching name seq publications with >= cluster scope
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* @zone_list: adjacent matching name seq publications with >= zone scope
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2014-12-02 10:00:30 +03:00
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* @rcu: RCU callback head used for deferred freeing
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2007-02-09 17:25:21 +03:00
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*
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2006-01-02 21:04:38 +03:00
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* Note that the node list, cluster list, and zone list are circular lists.
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*/
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struct publication {
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u32 type;
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u32 lower;
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u32 upper;
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u32 scope;
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u32 node;
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u32 ref;
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u32 key;
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2014-11-26 06:41:45 +03:00
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struct list_head nodesub_list;
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2006-01-02 21:04:38 +03:00
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struct list_head local_list;
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struct list_head pport_list;
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2011-05-30 18:48:48 +04:00
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struct list_head node_list;
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struct list_head cluster_list;
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struct list_head zone_list;
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2014-12-02 10:00:30 +03:00
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struct rcu_head rcu;
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2006-01-02 21:04:38 +03:00
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};
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2014-12-02 10:00:24 +03:00
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/**
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* struct name_table - table containing all existing port name publications
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* @seq_hlist: name sequence hash lists
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* @publ_list: pulication lists
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* @local_publ_count: number of publications issued by this node
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*/
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struct name_table {
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struct hlist_head seq_hlist[TIPC_NAMETBL_SIZE];
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struct list_head publ_list[TIPC_PUBL_SCOPE_NUM];
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u32 local_publ_count;
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};
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2006-01-02 21:04:38 +03:00
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2014-11-20 12:29:20 +03:00
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int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb);
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2015-01-09 10:27:09 +03:00
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u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *node);
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2018-01-08 23:03:30 +03:00
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int tipc_nametbl_mc_lookup(struct net *net, u32 type, u32 lower, u32 upper,
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u32 scope, bool exact, struct list_head *dports);
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tipc: introduce communication groups
As a preparation for introducing flow control for multicast and datagram
messaging we need a more strictly defined framework than we have now. A
socket must be able keep track of exactly how many and which other
sockets it is allowed to communicate with at any moment, and keep the
necessary state for those.
We therefore introduce a new concept we have named Communication Group.
Sockets can join a group via a new setsockopt() call TIPC_GROUP_JOIN.
The call takes four parameters: 'type' serves as group identifier,
'instance' serves as an logical member identifier, and 'scope' indicates
the visibility of the group (node/cluster/zone). Finally, 'flags' makes
it possible to set certain properties for the member. For now, there is
only one flag, indicating if the creator of the socket wants to receive
a copy of broadcast or multicast messages it is sending via the socket,
and if wants to be eligible as destination for its own anycasts.
A group is closed, i.e., sockets which have not joined a group will
not be able to send messages to or receive messages from members of
the group, and vice versa.
Any member of a group can send multicast ('group broadcast') messages
to all group members, optionally including itself, using the primitive
send(). The messages are received via the recvmsg() primitive. A socket
can only be member of one group at a time.
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-13 12:04:23 +03:00
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void tipc_nametbl_build_group(struct net *net, struct tipc_group *grp,
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u32 type, u32 domain);
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2017-01-18 21:50:51 +03:00
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void tipc_nametbl_lookup_dst_nodes(struct net *net, u32 type, u32 lower,
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u32 upper, u32 domain,
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struct tipc_nlist *nodes);
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2017-10-13 12:04:28 +03:00
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bool tipc_nametbl_lookup(struct net *net, u32 type, u32 instance, u32 domain,
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struct list_head *dsts, int *dstcnt, u32 exclude,
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bool all);
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2015-01-09 10:27:05 +03:00
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struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower,
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u32 upper, u32 scope, u32 port_ref,
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u32 key);
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int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 ref,
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u32 key);
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2015-01-09 10:27:09 +03:00
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struct publication *tipc_nametbl_insert_publ(struct net *net, u32 type,
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u32 lower, u32 upper, u32 scope,
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u32 node, u32 ref, u32 key);
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struct publication *tipc_nametbl_remove_publ(struct net *net, u32 type,
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u32 lower, u32 node, u32 ref,
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2013-06-17 18:54:47 +04:00
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u32 key);
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tipc: add option to suppress PUBLISH events for pre-existing publications
Currently, when a user is subscribing for binding table publications,
he will receive a PUBLISH event for all already existing matching items
in the binding table.
However, a group socket making a subscriptions doesn't need this initial
status update from the binding table, because it has already scanned it
during the join operation. Worse, the multiplicatory effect of issuing
mutual events for dozens or hundreds group members within a short time
frame put a heavy load on the topology server, with the end result that
scale out operations on a big group tend to take much longer than needed.
We now add a new filter option, TIPC_SUB_NO_STATUS, for topology server
subscriptions, so that this initial avalanche of events is suppressed.
This change, along with the previous commit, significantly improves the
range and speed of group scale out operations.
We keep the new option internal for the tipc driver, at least for now.
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-08 23:03:29 +03:00
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void tipc_nametbl_subscribe(struct tipc_subscription *s, bool status);
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2011-12-30 05:43:44 +04:00
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void tipc_nametbl_unsubscribe(struct tipc_subscription *s);
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2015-01-09 10:27:09 +03:00
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int tipc_nametbl_init(struct net *net);
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void tipc_nametbl_stop(struct net *net);
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2006-01-02 21:04:38 +03:00
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2017-10-13 12:04:22 +03:00
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struct tipc_dest {
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2017-01-18 21:50:51 +03:00
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struct list_head list;
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2017-10-13 12:04:22 +03:00
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union {
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struct {
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u32 port;
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u32 node;
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};
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u64 value;
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};
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2017-01-18 21:50:51 +03:00
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};
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2017-10-13 12:04:22 +03:00
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struct tipc_dest *tipc_dest_find(struct list_head *l, u32 node, u32 port);
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bool tipc_dest_push(struct list_head *l, u32 node, u32 port);
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bool tipc_dest_pop(struct list_head *l, u32 *node, u32 *port);
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bool tipc_dest_del(struct list_head *l, u32 node, u32 port);
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void tipc_dest_list_purge(struct list_head *l);
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int tipc_dest_list_len(struct list_head *l);
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2015-02-05 16:36:43 +03:00
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2006-01-02 21:04:38 +03:00
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#endif
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