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38#ifndef _TIPC_CORE_H
39#define _TIPC_CORE_H
40
41#include <linux/tipc.h>
42#include <linux/tipc_config.h>
43#include <linux/tipc_netlink.h>
44#include <linux/types.h>
45#include <linux/kernel.h>
46#include <linux/errno.h>
47#include <linux/mm.h>
48#include <linux/timer.h>
49#include <linux/string.h>
50#include <linux/uaccess.h>
51#include <linux/interrupt.h>
52#include <linux/atomic.h>
53#include <linux/netdevice.h>
54#include <linux/in.h>
55#include <linux/list.h>
56#include <linux/slab.h>
57#include <linux/vmalloc.h>
58#include <linux/rtnetlink.h>
59#include <linux/etherdevice.h>
60#include <net/netns/generic.h>
61#include <linux/rhashtable.h>
62#include <net/genetlink.h>
63#include <net/netns/hash.h>
64
65#ifdef pr_fmt
66#undef pr_fmt
67#endif
68
69#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
70
71struct tipc_node;
72struct tipc_bearer;
73struct tipc_bc_base;
74struct tipc_link;
75struct tipc_name_table;
76struct tipc_topsrv;
77struct tipc_monitor;
78#ifdef CONFIG_TIPC_CRYPTO
79struct tipc_crypto;
80#endif
81
82#define TIPC_MOD_VER "2.0.0"
83
84#define NODE_HTABLE_SIZE 512
85#define MAX_BEARERS 3
86#define TIPC_DEF_MON_THRESHOLD 32
87#define NODE_ID_LEN 16
88#define NODE_ID_STR_LEN (NODE_ID_LEN * 2 + 1)
89
90extern unsigned int tipc_net_id __read_mostly;
91extern int sysctl_tipc_rmem[3] __read_mostly;
92extern int sysctl_tipc_named_timeout __read_mostly;
93
94struct tipc_net {
95 u8 node_id[NODE_ID_LEN];
96 u32 node_addr;
97 u32 trial_addr;
98 unsigned long addr_trial_end;
99 char node_id_string[NODE_ID_STR_LEN];
100 int net_id;
101 int random;
102 bool legacy_addr_format;
103
104
105 spinlock_t node_list_lock;
106 struct hlist_head node_htable[NODE_HTABLE_SIZE];
107 struct list_head node_list;
108 u32 num_nodes;
109 u32 num_links;
110
111
112 struct tipc_monitor *monitors[MAX_BEARERS];
113 int mon_threshold;
114
115
116 struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
117
118
119 spinlock_t bclock;
120 struct tipc_bc_base *bcbase;
121 struct tipc_link *bcl;
122
123
124 struct rhashtable sk_rht;
125
126
127 spinlock_t nametbl_lock;
128 struct name_table *nametbl;
129
130
131 struct tipc_topsrv *topsrv;
132 atomic_t subscription_count;
133
134
135 u16 capabilities;
136
137
138 struct packet_type loopback_pt;
139
140#ifdef CONFIG_TIPC_CRYPTO
141
142 struct tipc_crypto *crypto_tx;
143#endif
144
145 struct work_struct work;
146
147 atomic_t wq_count;
148};
149
150static inline struct tipc_net *tipc_net(struct net *net)
151{
152 return net_generic(net, tipc_net_id);
153}
154
155static inline int tipc_netid(struct net *net)
156{
157 return tipc_net(net)->net_id;
158}
159
160static inline struct list_head *tipc_nodes(struct net *net)
161{
162 return &tipc_net(net)->node_list;
163}
164
165static inline struct name_table *tipc_name_table(struct net *net)
166{
167 return tipc_net(net)->nametbl;
168}
169
170static inline struct tipc_topsrv *tipc_topsrv(struct net *net)
171{
172 return tipc_net(net)->topsrv;
173}
174
175static inline unsigned int tipc_hashfn(u32 addr)
176{
177 return addr & (NODE_HTABLE_SIZE - 1);
178}
179
180static inline u16 mod(u16 x)
181{
182 return x & 0xffffu;
183}
184
185static inline int less_eq(u16 left, u16 right)
186{
187 return mod(right - left) < 32768u;
188}
189
190static inline int more(u16 left, u16 right)
191{
192 return !less_eq(left, right);
193}
194
195static inline int less(u16 left, u16 right)
196{
197 return less_eq(left, right) && (mod(right) != mod(left));
198}
199
200static inline int in_range(u16 val, u16 min, u16 max)
201{
202 return !less(val, min) && !more(val, max);
203}
204
205static inline u32 tipc_net_hash_mixes(struct net *net, int tn_rand)
206{
207 return net_hash_mix(&init_net) ^ net_hash_mix(net) ^ tn_rand;
208}
209
210static inline u32 hash128to32(char *bytes)
211{
212 __be32 *tmp = (__be32 *)bytes;
213 u32 res;
214
215 res = ntohl(tmp[0] ^ tmp[1] ^ tmp[2] ^ tmp[3]);
216 if (likely(res))
217 return res;
218 return ntohl(tmp[0] | tmp[1] | tmp[2] | tmp[3]);
219}
220
221#ifdef CONFIG_SYSCTL
222int tipc_register_sysctl(void);
223void tipc_unregister_sysctl(void);
224#else
225#define tipc_register_sysctl() 0
226#define tipc_unregister_sysctl()
227#endif
228#endif
229