30935198b7
In function tipc_dest_push, the 32bit variables 'node' and 'port'
are stored separately in uppper and lower part of 64bit 'value'.
Then this value is assigned to dst->value which is a union like:
union
{
struct {
u32 port;
u32 node;
};
u64 value;
}
This works on little-endian machines like x86 but fails on big-endian
machines.
The fix remove the 'value' stack parameter and even the 'value'
member of the union in tipc_dest, assign the 'node' and 'port' member
directly with the input parameter to avoid the endian issue.
Fixes: a80ae5306a ("tipc: improve destination linked list")
Signed-off-by: Zhenbo Gao <zhenbo.gao@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Haiqing Bai <Haiqing.Bai@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
148 lines
6.0 KiB
C
148 lines
6.0 KiB
C
/*
|
|
* net/tipc/name_table.h: Include file for TIPC name table code
|
|
*
|
|
* Copyright (c) 2000-2006, 2014-2018, Ericsson AB
|
|
* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
|
|
* 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_NAME_TABLE_H
|
|
#define _TIPC_NAME_TABLE_H
|
|
|
|
struct tipc_subscription;
|
|
struct tipc_plist;
|
|
struct tipc_nlist;
|
|
struct tipc_group;
|
|
|
|
/*
|
|
* TIPC name types reserved for internal TIPC use (both current and planned)
|
|
*/
|
|
#define TIPC_ZM_SRV 3 /* zone master service name type */
|
|
#define TIPC_PUBL_SCOPE_NUM (TIPC_NODE_SCOPE + 1)
|
|
#define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */
|
|
|
|
/**
|
|
* struct publication - info about a published (name or) name sequence
|
|
* @type: name sequence type
|
|
* @lower: name sequence lower bound
|
|
* @upper: name sequence upper bound
|
|
* @scope: scope of publication, TIPC_NODE_SCOPE or TIPC_CLUSTER_SCOPE
|
|
* @node: network address of publishing socket's node
|
|
* @port: publishing port
|
|
* @key: publication key, unique across the cluster
|
|
* @binding_node: all publications from the same node which bound this one
|
|
* - Remote publications: in node->publ_list
|
|
* Used by node/name distr to withdraw publications when node is lost
|
|
* - Local/node scope publications: in name_table->node_scope list
|
|
* - Local/cluster scope publications: in name_table->cluster_scope list
|
|
* @binding_sock: all publications from the same socket which bound this one
|
|
* Used by socket to withdraw publications when socket is unbound/released
|
|
* @local_publ: list of identical publications made from this node
|
|
* Used by closest_first and multicast receive lookup algorithms
|
|
* @all_publ: all publications identical to this one, whatever node and scope
|
|
* Used by round-robin lookup algorithm
|
|
* @rcu: RCU callback head used for deferred freeing
|
|
*/
|
|
struct publication {
|
|
u32 type;
|
|
u32 lower;
|
|
u32 upper;
|
|
u32 scope;
|
|
u32 node;
|
|
u32 port;
|
|
u32 key;
|
|
struct list_head binding_node;
|
|
struct list_head binding_sock;
|
|
struct list_head local_publ;
|
|
struct list_head all_publ;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct name_table - table containing all existing port name publications
|
|
* @seq_hlist: name sequence hash lists
|
|
* @node_scope: all local publications with node scope
|
|
* - used by name_distr during re-init of name table
|
|
* @cluster_scope: all local publications with cluster scope
|
|
* - used by name_distr to send bulk updates to new nodes
|
|
* - used by name_distr during re-init of name table
|
|
* @local_publ_count: number of publications issued by this node
|
|
*/
|
|
struct name_table {
|
|
struct hlist_head services[TIPC_NAMETBL_SIZE];
|
|
struct list_head node_scope;
|
|
struct list_head cluster_scope;
|
|
u32 local_publ_count;
|
|
};
|
|
|
|
int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb);
|
|
|
|
u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *node);
|
|
void tipc_nametbl_mc_lookup(struct net *net, u32 type, u32 lower, u32 upper,
|
|
u32 scope, bool exact, struct list_head *dports);
|
|
void tipc_nametbl_build_group(struct net *net, struct tipc_group *grp,
|
|
u32 type, u32 domain);
|
|
void tipc_nametbl_lookup_dst_nodes(struct net *net, u32 type, u32 lower,
|
|
u32 upper, struct tipc_nlist *nodes);
|
|
bool tipc_nametbl_lookup(struct net *net, u32 type, u32 instance, u32 domain,
|
|
struct list_head *dsts, int *dstcnt, u32 exclude,
|
|
bool all);
|
|
struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower,
|
|
u32 upper, u32 scope, u32 port,
|
|
u32 key);
|
|
int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 upper,
|
|
u32 key);
|
|
struct publication *tipc_nametbl_insert_publ(struct net *net, u32 type,
|
|
u32 lower, u32 upper, u32 scope,
|
|
u32 node, u32 ref, u32 key);
|
|
struct publication *tipc_nametbl_remove_publ(struct net *net, u32 type,
|
|
u32 lower, u32 upper,
|
|
u32 node, u32 key);
|
|
bool tipc_nametbl_subscribe(struct tipc_subscription *s);
|
|
void tipc_nametbl_unsubscribe(struct tipc_subscription *s);
|
|
int tipc_nametbl_init(struct net *net);
|
|
void tipc_nametbl_stop(struct net *net);
|
|
|
|
struct tipc_dest {
|
|
struct list_head list;
|
|
u32 port;
|
|
u32 node;
|
|
};
|
|
|
|
struct tipc_dest *tipc_dest_find(struct list_head *l, u32 node, u32 port);
|
|
bool tipc_dest_push(struct list_head *l, u32 node, u32 port);
|
|
bool tipc_dest_pop(struct list_head *l, u32 *node, u32 *port);
|
|
bool tipc_dest_del(struct list_head *l, u32 node, u32 port);
|
|
void tipc_dest_list_purge(struct list_head *l);
|
|
int tipc_dest_list_len(struct list_head *l);
|
|
|
|
#endif
|