01fd12bb18
If the bearer carrying multicast messages supports broadcast, those messages will be sent to all cluster nodes, irrespective of whether these nodes host any actual destinations socket or not. This is clearly wasteful if the cluster is large and there are only a few real destinations for the message being sent. In this commit we extend the eligibility of the newly introduced "replicast" transmit option. We now make it possible for a user to select which method he wants to be used, either as a mandatory setting via setsockopt(), or as a relative setting where we let the broadcast layer decide which method to use based on the ratio between cluster size and the message's actual number of destination nodes. In the latter case, a sending socket must stick to a previously selected method until it enters an idle period of at least 5 seconds. This eliminates the risk of message reordering caused by method change, i.e., when changes to cluster size or number of destinations would otherwise mandate a new method to be used. Reviewed-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com> 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>
257 lines
7 KiB
C
257 lines
7 KiB
C
/*
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* include/uapi/linux/tipc.h: Header for TIPC socket interface
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*
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* Copyright (c) 2003-2006, 2015-2016 Ericsson AB
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* Copyright (c) 2005, 2010-2011, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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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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*
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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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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_TIPC_H_
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#define _LINUX_TIPC_H_
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#include <linux/types.h>
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#include <linux/sockios.h>
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/*
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* TIPC addressing primitives
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*/
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struct tipc_portid {
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__u32 ref;
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__u32 node;
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};
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struct tipc_name {
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__u32 type;
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__u32 instance;
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};
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struct tipc_name_seq {
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__u32 type;
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__u32 lower;
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__u32 upper;
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};
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/* TIPC Address Size, Offset, Mask specification for Z.C.N
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*/
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#define TIPC_NODE_BITS 12
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#define TIPC_CLUSTER_BITS 12
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#define TIPC_ZONE_BITS 8
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#define TIPC_NODE_OFFSET 0
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#define TIPC_CLUSTER_OFFSET TIPC_NODE_BITS
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#define TIPC_ZONE_OFFSET (TIPC_CLUSTER_OFFSET + TIPC_CLUSTER_BITS)
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#define TIPC_NODE_SIZE ((1UL << TIPC_NODE_BITS) - 1)
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#define TIPC_CLUSTER_SIZE ((1UL << TIPC_CLUSTER_BITS) - 1)
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#define TIPC_ZONE_SIZE ((1UL << TIPC_ZONE_BITS) - 1)
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#define TIPC_NODE_MASK (TIPC_NODE_SIZE << TIPC_NODE_OFFSET)
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#define TIPC_CLUSTER_MASK (TIPC_CLUSTER_SIZE << TIPC_CLUSTER_OFFSET)
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#define TIPC_ZONE_MASK (TIPC_ZONE_SIZE << TIPC_ZONE_OFFSET)
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#define TIPC_ZONE_CLUSTER_MASK (TIPC_ZONE_MASK | TIPC_CLUSTER_MASK)
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static inline __u32 tipc_addr(unsigned int zone,
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unsigned int cluster,
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unsigned int node)
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{
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return (zone << TIPC_ZONE_OFFSET) |
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(cluster << TIPC_CLUSTER_OFFSET) |
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node;
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}
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static inline unsigned int tipc_zone(__u32 addr)
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{
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return addr >> TIPC_ZONE_OFFSET;
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}
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static inline unsigned int tipc_cluster(__u32 addr)
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{
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return (addr & TIPC_CLUSTER_MASK) >> TIPC_CLUSTER_OFFSET;
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}
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static inline unsigned int tipc_node(__u32 addr)
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{
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return addr & TIPC_NODE_MASK;
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}
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/*
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* Application-accessible port name types
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*/
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#define TIPC_CFG_SRV 0 /* configuration service name type */
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#define TIPC_TOP_SRV 1 /* topology service name type */
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#define TIPC_LINK_STATE 2 /* link state name type */
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#define TIPC_RESERVED_TYPES 64 /* lowest user-publishable name type */
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/*
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* Publication scopes when binding port names and port name sequences
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*/
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#define TIPC_ZONE_SCOPE 1
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#define TIPC_CLUSTER_SCOPE 2
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#define TIPC_NODE_SCOPE 3
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/*
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* Limiting values for messages
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*/
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#define TIPC_MAX_USER_MSG_SIZE 66000U
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/*
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* Message importance levels
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*/
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#define TIPC_LOW_IMPORTANCE 0
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#define TIPC_MEDIUM_IMPORTANCE 1
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#define TIPC_HIGH_IMPORTANCE 2
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#define TIPC_CRITICAL_IMPORTANCE 3
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/*
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* Msg rejection/connection shutdown reasons
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*/
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#define TIPC_OK 0
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#define TIPC_ERR_NO_NAME 1
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#define TIPC_ERR_NO_PORT 2
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#define TIPC_ERR_NO_NODE 3
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#define TIPC_ERR_OVERLOAD 4
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#define TIPC_CONN_SHUTDOWN 5
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/*
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* TIPC topology subscription service definitions
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*/
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#define TIPC_SUB_PORTS 0x01 /* filter for port availability */
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#define TIPC_SUB_SERVICE 0x02 /* filter for service availability */
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#define TIPC_SUB_CANCEL 0x04 /* cancel a subscription */
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#define TIPC_WAIT_FOREVER (~0) /* timeout for permanent subscription */
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struct tipc_subscr {
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struct tipc_name_seq seq; /* name sequence of interest */
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__u32 timeout; /* subscription duration (in ms) */
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__u32 filter; /* bitmask of filter options */
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char usr_handle[8]; /* available for subscriber use */
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};
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#define TIPC_PUBLISHED 1 /* publication event */
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#define TIPC_WITHDRAWN 2 /* withdraw event */
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#define TIPC_SUBSCR_TIMEOUT 3 /* subscription timeout event */
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struct tipc_event {
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__u32 event; /* event type */
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__u32 found_lower; /* matching name seq instances */
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__u32 found_upper; /* " " " " */
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struct tipc_portid port; /* associated port */
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struct tipc_subscr s; /* associated subscription */
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};
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/*
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* Socket API
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*/
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#ifndef AF_TIPC
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#define AF_TIPC 30
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#endif
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#ifndef PF_TIPC
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#define PF_TIPC AF_TIPC
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#endif
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#ifndef SOL_TIPC
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#define SOL_TIPC 271
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#endif
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#define TIPC_ADDR_NAMESEQ 1
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#define TIPC_ADDR_MCAST 1
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#define TIPC_ADDR_NAME 2
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#define TIPC_ADDR_ID 3
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struct sockaddr_tipc {
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unsigned short family;
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unsigned char addrtype;
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signed char scope;
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union {
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struct tipc_portid id;
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struct tipc_name_seq nameseq;
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struct {
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struct tipc_name name;
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__u32 domain;
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} name;
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} addr;
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};
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/*
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* Ancillary data objects supported by recvmsg()
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*/
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#define TIPC_ERRINFO 1 /* error info */
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#define TIPC_RETDATA 2 /* returned data */
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#define TIPC_DESTNAME 3 /* destination name */
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/*
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* TIPC-specific socket option names
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*/
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#define TIPC_IMPORTANCE 127 /* Default: TIPC_LOW_IMPORTANCE */
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#define TIPC_SRC_DROPPABLE 128 /* Default: based on socket type */
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#define TIPC_DEST_DROPPABLE 129 /* Default: based on socket type */
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#define TIPC_CONN_TIMEOUT 130 /* Default: 8000 (ms) */
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#define TIPC_NODE_RECVQ_DEPTH 131 /* Default: none (read only) */
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#define TIPC_SOCK_RECVQ_DEPTH 132 /* Default: none (read only) */
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#define TIPC_MCAST_BROADCAST 133 /* Default: TIPC selects. No arg */
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#define TIPC_MCAST_REPLICAST 134 /* Default: TIPC selects. No arg */
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/*
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* Maximum sizes of TIPC bearer-related names (including terminating NULL)
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* The string formatting for each name element is:
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* media: media
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* interface: media:interface name
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* link: Z.C.N:interface-Z.C.N:interface
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*
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*/
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#define TIPC_MAX_MEDIA_NAME 16
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#define TIPC_MAX_IF_NAME 16
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#define TIPC_MAX_BEARER_NAME 32
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#define TIPC_MAX_LINK_NAME 60
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#define SIOCGETLINKNAME SIOCPROTOPRIVATE
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struct tipc_sioc_ln_req {
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__u32 peer;
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__u32 bearer_id;
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char linkname[TIPC_MAX_LINK_NAME];
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};
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#endif
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