2 * net/tipc/core.h: Include file for TIPC global declarations
4 * Copyright (c) 2005-2006, 2013-2018 Ericsson AB
5 * Copyright (c) 2005-2007, 2010-2013, Wind River Systems
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18 * this software without specific prior written permission.
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
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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>
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>
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>
68 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
74 struct tipc_name_table
;
77 #ifdef CONFIG_TIPC_CRYPTO
81 #define TIPC_MOD_VER "2.0.0"
83 #define NODE_HTABLE_SIZE 512
85 #define TIPC_DEF_MON_THRESHOLD 32
86 #define NODE_ID_LEN 16
87 #define NODE_ID_STR_LEN (NODE_ID_LEN * 2 + 1)
89 extern unsigned int tipc_net_id __read_mostly
;
90 extern int sysctl_tipc_rmem
[3] __read_mostly
;
91 extern int sysctl_tipc_named_timeout __read_mostly
;
93 struct tipc_net_work
{
94 struct work_struct work
;
100 u8 node_id
[NODE_ID_LEN
];
103 unsigned long addr_trial_end
;
104 char node_id_string
[NODE_ID_STR_LEN
];
107 bool legacy_addr_format
;
109 /* Node table and node list */
110 spinlock_t node_list_lock
;
111 struct hlist_head node_htable
[NODE_HTABLE_SIZE
];
112 struct list_head node_list
;
116 /* Neighbor monitoring list */
117 struct tipc_monitor
*monitors
[MAX_BEARERS
];
121 struct tipc_bearer __rcu
*bearer_list
[MAX_BEARERS
+ 1];
125 struct tipc_bc_base
*bcbase
;
126 struct tipc_link
*bcl
;
128 /* Socket hash table */
129 struct rhashtable sk_rht
;
132 spinlock_t nametbl_lock
;
133 struct name_table
*nametbl
;
135 /* Name dist queue */
136 struct list_head dist_queue
;
138 /* Topology subscription server */
139 struct tipc_topsrv
*topsrv
;
140 atomic_t subscription_count
;
142 /* Cluster capabilities */
145 /* Tracing of node internal messages */
146 struct packet_type loopback_pt
;
148 #ifdef CONFIG_TIPC_CRYPTO
149 /* TX crypto handler */
150 struct tipc_crypto
*crypto_tx
;
152 /* Work item for net finalize */
153 struct tipc_net_work final_work
;
156 static inline struct tipc_net
*tipc_net(struct net
*net
)
158 return net_generic(net
, tipc_net_id
);
161 static inline int tipc_netid(struct net
*net
)
163 return tipc_net(net
)->net_id
;
166 static inline struct list_head
*tipc_nodes(struct net
*net
)
168 return &tipc_net(net
)->node_list
;
171 static inline struct name_table
*tipc_name_table(struct net
*net
)
173 return tipc_net(net
)->nametbl
;
176 static inline struct tipc_topsrv
*tipc_topsrv(struct net
*net
)
178 return tipc_net(net
)->topsrv
;
181 static inline unsigned int tipc_hashfn(u32 addr
)
183 return addr
& (NODE_HTABLE_SIZE
- 1);
186 static inline u16
mod(u16 x
)
191 static inline int less_eq(u16 left
, u16 right
)
193 return mod(right
- left
) < 32768u;
196 static inline int more(u16 left
, u16 right
)
198 return !less_eq(left
, right
);
201 static inline int less(u16 left
, u16 right
)
203 return less_eq(left
, right
) && (mod(right
) != mod(left
));
206 static inline int in_range(u16 val
, u16 min
, u16 max
)
208 return !less(val
, min
) && !more(val
, max
);
211 static inline u32
tipc_net_hash_mixes(struct net
*net
, int tn_rand
)
213 return net_hash_mix(&init_net
) ^ net_hash_mix(net
) ^ tn_rand
;
217 int tipc_register_sysctl(void);
218 void tipc_unregister_sysctl(void);
220 #define tipc_register_sysctl() 0
221 #define tipc_unregister_sysctl()