| /* |
| * net/tipc/core.h: Include file for TIPC global declarations |
| * |
| * Copyright (c) 2005-2006, 2013-2018 Ericsson AB |
| * Copyright (c) 2005-2007, 2010-2013, 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_CORE_H |
| #define _TIPC_CORE_H |
| |
| #include <linux/tipc.h> |
| #include <linux/tipc_config.h> |
| #include <linux/tipc_netlink.h> |
| #include <linux/types.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/mm.h> |
| #include <linux/timer.h> |
| #include <linux/string.h> |
| #include <linux/uaccess.h> |
| #include <linux/interrupt.h> |
| #include <linux/atomic.h> |
| #include <linux/netdevice.h> |
| #include <linux/in.h> |
| #include <linux/list.h> |
| #include <linux/slab.h> |
| #include <linux/vmalloc.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/etherdevice.h> |
| #include <net/netns/generic.h> |
| #include <linux/rhashtable.h> |
| #include <net/genetlink.h> |
| #include <net/netns/hash.h> |
| |
| struct tipc_node; |
| struct tipc_bearer; |
| struct tipc_bc_base; |
| struct tipc_link; |
| struct tipc_name_table; |
| struct tipc_topsrv; |
| struct tipc_monitor; |
| |
| #define TIPC_MOD_VER "2.0.0" |
| |
| #define NODE_HTABLE_SIZE 512 |
| #define MAX_BEARERS 3 |
| #define TIPC_DEF_MON_THRESHOLD 32 |
| #define NODE_ID_LEN 16 |
| #define NODE_ID_STR_LEN (NODE_ID_LEN * 2 + 1) |
| |
| extern unsigned int tipc_net_id __read_mostly; |
| extern int sysctl_tipc_rmem[3] __read_mostly; |
| extern int sysctl_tipc_named_timeout __read_mostly; |
| |
| struct tipc_net { |
| u8 node_id[NODE_ID_LEN]; |
| u32 node_addr; |
| u32 trial_addr; |
| unsigned long addr_trial_end; |
| char node_id_string[NODE_ID_STR_LEN]; |
| int net_id; |
| int random; |
| bool legacy_addr_format; |
| |
| /* Node table and node list */ |
| spinlock_t node_list_lock; |
| struct hlist_head node_htable[NODE_HTABLE_SIZE]; |
| struct list_head node_list; |
| u32 num_nodes; |
| u32 num_links; |
| |
| /* Neighbor monitoring list */ |
| struct tipc_monitor *monitors[MAX_BEARERS]; |
| int mon_threshold; |
| |
| /* Bearer list */ |
| struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1]; |
| |
| /* Broadcast link */ |
| spinlock_t bclock; |
| struct tipc_bc_base *bcbase; |
| struct tipc_link *bcl; |
| |
| /* Socket hash table */ |
| struct rhashtable sk_rht; |
| |
| /* Name table */ |
| spinlock_t nametbl_lock; |
| struct name_table *nametbl; |
| |
| /* Name dist queue */ |
| struct list_head dist_queue; |
| |
| /* Topology subscription server */ |
| struct tipc_topsrv *topsrv; |
| atomic_t subscription_count; |
| |
| /* Cluster capabilities */ |
| u16 capabilities; |
| |
| /* Tracing of node internal messages */ |
| struct packet_type loopback_pt; |
| }; |
| |
| static inline struct tipc_net *tipc_net(struct net *net) |
| { |
| return net_generic(net, tipc_net_id); |
| } |
| |
| static inline int tipc_netid(struct net *net) |
| { |
| return tipc_net(net)->net_id; |
| } |
| |
| static inline struct list_head *tipc_nodes(struct net *net) |
| { |
| return &tipc_net(net)->node_list; |
| } |
| |
| static inline struct name_table *tipc_name_table(struct net *net) |
| { |
| return tipc_net(net)->nametbl; |
| } |
| |
| static inline struct tipc_topsrv *tipc_topsrv(struct net *net) |
| { |
| return tipc_net(net)->topsrv; |
| } |
| |
| static inline unsigned int tipc_hashfn(u32 addr) |
| { |
| return addr & (NODE_HTABLE_SIZE - 1); |
| } |
| |
| static inline u16 mod(u16 x) |
| { |
| return x & 0xffffu; |
| } |
| |
| static inline int less_eq(u16 left, u16 right) |
| { |
| return mod(right - left) < 32768u; |
| } |
| |
| static inline int more(u16 left, u16 right) |
| { |
| return !less_eq(left, right); |
| } |
| |
| static inline int less(u16 left, u16 right) |
| { |
| return less_eq(left, right) && (mod(right) != mod(left)); |
| } |
| |
| static inline int in_range(u16 val, u16 min, u16 max) |
| { |
| return !less(val, min) && !more(val, max); |
| } |
| |
| static inline u32 tipc_net_hash_mixes(struct net *net, int tn_rand) |
| { |
| return net_hash_mix(&init_net) ^ net_hash_mix(net) ^ tn_rand; |
| } |
| |
| #ifdef CONFIG_SYSCTL |
| int tipc_register_sysctl(void); |
| void tipc_unregister_sysctl(void); |
| #else |
| #define tipc_register_sysctl() 0 |
| #define tipc_unregister_sysctl() |
| #endif |
| #endif |