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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#include <net/netns/hash.h>
63
64#ifdef pr_fmt
65#undef pr_fmt
66#endif
67
68#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
69
70struct tipc_node;
71struct tipc_bearer;
72struct tipc_bc_base;
73struct tipc_link;
74struct tipc_name_table;
75struct tipc_topsrv;
76struct tipc_monitor;
77#ifdef CONFIG_TIPC_CRYPTO
78struct tipc_crypto;
79#endif
80
81#define TIPC_MOD_VER "2.0.0"
82
83#define NODE_HTABLE_SIZE 512
84#define MAX_BEARERS 3
85#define TIPC_DEF_MON_THRESHOLD 32
86#define NODE_ID_LEN 16
87#define NODE_ID_STR_LEN (NODE_ID_LEN * 2 + 1)
88
89extern unsigned int tipc_net_id __read_mostly;
90extern int sysctl_tipc_rmem[3] __read_mostly;
91extern int sysctl_tipc_named_timeout __read_mostly;
92
93struct tipc_net {
94 u8 node_id[NODE_ID_LEN];
95 u32 node_addr;
96 u32 trial_addr;
97 unsigned long addr_trial_end;
98 char node_id_string[NODE_ID_STR_LEN];
99 int net_id;
100 int random;
101 bool legacy_addr_format;
102
103
104 spinlock_t node_list_lock;
105 struct hlist_head node_htable[NODE_HTABLE_SIZE];
106 struct list_head node_list;
107 u32 num_nodes;
108 u32 num_links;
109
110
111 struct tipc_monitor *monitors[MAX_BEARERS];
112 int mon_threshold;
113
114
115 struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
116
117
118 spinlock_t bclock;
119 struct tipc_bc_base *bcbase;
120 struct tipc_link *bcl;
121
122
123 struct rhashtable sk_rht;
124
125
126 spinlock_t nametbl_lock;
127 struct name_table *nametbl;
128
129
130 struct list_head dist_queue;
131
132
133 struct tipc_topsrv *topsrv;
134 atomic_t subscription_count;
135
136
137 u16 capabilities;
138
139
140 struct packet_type loopback_pt;
141
142#ifdef CONFIG_TIPC_CRYPTO
143
144 struct tipc_crypto *crypto_tx;
145#endif
146
147 struct work_struct work;
148
149 atomic_t wq_count;
150};
151
152static inline struct tipc_net *tipc_net(struct net *net)
153{
154 return net_generic(net, tipc_net_id);
155}
156
157static inline int tipc_netid(struct net *net)
158{
159 return tipc_net(net)->net_id;
160}
161
162static inline struct list_head *tipc_nodes(struct net *net)
163{
164 return &tipc_net(net)->node_list;
165}
166
167static inline struct name_table *tipc_name_table(struct net *net)
168{
169 return tipc_net(net)->nametbl;
170}
171
172static inline struct tipc_topsrv *tipc_topsrv(struct net *net)
173{
174 return tipc_net(net)->topsrv;
175}
176
177static inline unsigned int tipc_hashfn(u32 addr)
178{
179 return addr & (NODE_HTABLE_SIZE - 1);
180}
181
182static inline u16 mod(u16 x)
183{
184 return x & 0xffffu;
185}
186
187static inline int less_eq(u16 left, u16 right)
188{
189 return mod(right - left) < 32768u;
190}
191
192static inline int more(u16 left, u16 right)
193{
194 return !less_eq(left, right);
195}
196
197static inline int less(u16 left, u16 right)
198{
199 return less_eq(left, right) && (mod(right) != mod(left));
200}
201
202static inline int in_range(u16 val, u16 min, u16 max)
203{
204 return !less(val, min) && !more(val, max);
205}
206
207static inline u32 tipc_net_hash_mixes(struct net *net, int tn_rand)
208{
209 return net_hash_mix(&init_net) ^ net_hash_mix(net) ^ tn_rand;
210}
211
212#ifdef CONFIG_SYSCTL
213int tipc_register_sysctl(void);
214void tipc_unregister_sysctl(void);
215#else
216#define tipc_register_sysctl() 0
217#define tipc_unregister_sysctl()
218#endif
219#endif
220