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37#ifndef _TIPC_CORE_H
38#define _TIPC_CORE_H
39
40#include <linux/tipc.h>
41#include <linux/tipc_config.h>
42#include <linux/tipc_netlink.h>
43#include <linux/types.h>
44#include <linux/kernel.h>
45#include <linux/errno.h>
46#include <linux/mm.h>
47#include <linux/timer.h>
48#include <linux/string.h>
49#include <linux/uaccess.h>
50#include <linux/interrupt.h>
51#include <linux/atomic.h>
52#include <linux/netdevice.h>
53#include <linux/in.h>
54#include <linux/list.h>
55#include <linux/slab.h>
56#include <linux/vmalloc.h>
57#include <linux/rtnetlink.h>
58#include <linux/etherdevice.h>
59#include <net/netns/generic.h>
60#include <linux/rhashtable.h>
61#include <net/genetlink.h>
62
63#ifdef pr_fmt
64#undef pr_fmt
65#endif
66
67#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
68
69struct tipc_node;
70struct tipc_bearer;
71struct tipc_bc_base;
72struct tipc_link;
73struct tipc_name_table;
74struct tipc_topsrv;
75struct tipc_monitor;
76
77#define TIPC_MOD_VER "2.0.0"
78
79#define NODE_HTABLE_SIZE 512
80#define MAX_BEARERS 3
81#define TIPC_DEF_MON_THRESHOLD 32
82#define NODE_ID_LEN 16
83#define NODE_ID_STR_LEN (NODE_ID_LEN * 2 + 1)
84
85extern unsigned int tipc_net_id __read_mostly;
86extern int sysctl_tipc_rmem[3] __read_mostly;
87extern int sysctl_tipc_named_timeout __read_mostly;
88
89struct tipc_net {
90 u8 node_id[NODE_ID_LEN];
91 u32 node_addr;
92 u32 trial_addr;
93 unsigned long addr_trial_end;
94 char node_id_string[NODE_ID_STR_LEN];
95 int net_id;
96 int random;
97 bool legacy_addr_format;
98
99
100 spinlock_t node_list_lock;
101 struct hlist_head node_htable[NODE_HTABLE_SIZE];
102 struct list_head node_list;
103 u32 num_nodes;
104 u32 num_links;
105
106
107 struct tipc_monitor *monitors[MAX_BEARERS];
108 int mon_threshold;
109
110
111 struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
112
113
114 spinlock_t bclock;
115 struct tipc_bc_base *bcbase;
116 struct tipc_link *bcl;
117
118
119 struct rhashtable sk_rht;
120
121
122 spinlock_t nametbl_lock;
123 struct name_table *nametbl;
124
125
126 struct list_head dist_queue;
127
128
129 struct tipc_topsrv *topsrv;
130 atomic_t subscription_count;
131
132
133 u16 capabilities;
134
135
136 struct packet_type loopback_pt;
137};
138
139static inline struct tipc_net *tipc_net(struct net *net)
140{
141 return net_generic(net, tipc_net_id);
142}
143
144static inline int tipc_netid(struct net *net)
145{
146 return tipc_net(net)->net_id;
147}
148
149static inline struct list_head *tipc_nodes(struct net *net)
150{
151 return &tipc_net(net)->node_list;
152}
153
154static inline struct name_table *tipc_name_table(struct net *net)
155{
156 return tipc_net(net)->nametbl;
157}
158
159static inline struct tipc_topsrv *tipc_topsrv(struct net *net)
160{
161 return tipc_net(net)->topsrv;
162}
163
164static inline unsigned int tipc_hashfn(u32 addr)
165{
166 return addr & (NODE_HTABLE_SIZE - 1);
167}
168
169static inline u16 mod(u16 x)
170{
171 return x & 0xffffu;
172}
173
174static inline int less_eq(u16 left, u16 right)
175{
176 return mod(right - left) < 32768u;
177}
178
179static inline int more(u16 left, u16 right)
180{
181 return !less_eq(left, right);
182}
183
184static inline int less(u16 left, u16 right)
185{
186 return less_eq(left, right) && (mod(right) != mod(left));
187}
188
189static inline int in_range(u16 val, u16 min, u16 max)
190{
191 return !less(val, min) && !more(val, max);
192}
193
194#ifdef CONFIG_SYSCTL
195int tipc_register_sysctl(void);
196void tipc_unregister_sysctl(void);
197#else
198#define tipc_register_sysctl() 0
199#define tipc_unregister_sysctl()
200#endif
201#endif
202