2 * net/tipc/core.h: Include file for TIPC global declarations
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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>
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>
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>
69 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
75 struct tipc_name_table;
78 #ifdef CONFIG_TIPC_CRYPTO
82 #define TIPC_MOD_VER "2.0.0"
84 #define NODE_HTABLE_SIZE 512
86 #define TIPC_DEF_MON_THRESHOLD 32
87 #define NODE_ID_LEN 16
88 #define NODE_ID_STR_LEN (NODE_ID_LEN * 2 + 1)
90 extern unsigned int tipc_net_id __read_mostly;
91 extern int sysctl_tipc_rmem[3] __read_mostly;
92 extern int sysctl_tipc_named_timeout __read_mostly;
95 u8 node_id[NODE_ID_LEN];
98 unsigned long addr_trial_end;
99 char node_id_string[NODE_ID_STR_LEN];
102 bool legacy_addr_format;
104 /* Node table and node list */
105 spinlock_t node_list_lock;
106 struct hlist_head node_htable[NODE_HTABLE_SIZE];
107 struct list_head node_list;
111 /* Neighbor monitoring list */
112 struct tipc_monitor *monitors[MAX_BEARERS];
116 struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
120 struct tipc_bc_base *bcbase;
121 struct tipc_link *bcl;
123 /* Socket hash table */
124 struct rhashtable sk_rht;
127 spinlock_t nametbl_lock;
128 struct name_table *nametbl;
130 /* Topology subscription server */
131 struct tipc_topsrv *topsrv;
132 atomic_t subscription_count;
134 /* Cluster capabilities */
137 /* Tracing of node internal messages */
138 struct packet_type loopback_pt;
140 #ifdef CONFIG_TIPC_CRYPTO
141 /* TX crypto handler */
142 struct tipc_crypto *crypto_tx;
144 /* Work item for net finalize */
145 struct work_struct work;
146 /* The numbers of work queues in schedule */
150 static inline struct tipc_net *tipc_net(struct net *net)
152 return net_generic(net, tipc_net_id);
155 static inline int tipc_netid(struct net *net)
157 return tipc_net(net)->net_id;
160 static inline struct list_head *tipc_nodes(struct net *net)
162 return &tipc_net(net)->node_list;
165 static inline struct name_table *tipc_name_table(struct net *net)
167 return tipc_net(net)->nametbl;
170 static inline struct tipc_topsrv *tipc_topsrv(struct net *net)
172 return tipc_net(net)->topsrv;
175 static inline unsigned int tipc_hashfn(u32 addr)
177 return addr & (NODE_HTABLE_SIZE - 1);
180 static inline u16 mod(u16 x)
185 static inline int less_eq(u16 left, u16 right)
187 return mod(right - left) < 32768u;
190 static inline int more(u16 left, u16 right)
192 return !less_eq(left, right);
195 static inline int less(u16 left, u16 right)
197 return less_eq(left, right) && (mod(right) != mod(left));
200 static inline int in_range(u16 val, u16 min, u16 max)
202 return !less(val, min) && !more(val, max);
205 static inline u32 tipc_net_hash_mixes(struct net *net, int tn_rand)
207 return net_hash_mix(&init_net) ^ net_hash_mix(net) ^ tn_rand;
210 static inline u32 hash128to32(char *bytes)
212 __be32 *tmp = (__be32 *)bytes;
215 res = ntohl(tmp[0] ^ tmp[1] ^ tmp[2] ^ tmp[3]);
218 return ntohl(tmp[0] | tmp[1] | tmp[2] | tmp[3]);
222 int tipc_register_sysctl(void);
223 void tipc_unregister_sysctl(void);
225 #define tipc_register_sysctl() 0
226 #define tipc_unregister_sysctl()