1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37#ifndef _TIPC_BEARER_H
38#define _TIPC_BEARER_H
39
40#include "netlink.h"
41#include "core.h"
42#include "msg.h"
43#include <net/genetlink.h>
44
45#define MAX_MEDIA 3
46
47
48
49
50
51
52#define TIPC_MEDIA_INFO_SIZE 32
53#define TIPC_MEDIA_TYPE_OFFSET 3
54#define TIPC_MEDIA_ADDR_OFFSET 4
55
56
57
58
59#define TIPC_MEDIA_TYPE_ETH 1
60#define TIPC_MEDIA_TYPE_IB 2
61#define TIPC_MEDIA_TYPE_UDP 3
62
63
64#define TIPC_MIN_BEARER_MTU (MAX_H_SIZE + INT_H_SIZE)
65
66
67
68#define TIPC_BROADCAST_SUPPORT 1
69#define TIPC_REPLICAST_SUPPORT 2
70
71
72
73
74
75
76
77struct tipc_media_addr {
78 u8 value[TIPC_MEDIA_INFO_SIZE];
79 u8 media_id;
80 u8 broadcast;
81};
82
83struct tipc_bearer;
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104struct tipc_media {
105 int (*send_msg)(struct net *net, struct sk_buff *buf,
106 struct tipc_bearer *b,
107 struct tipc_media_addr *dest);
108 int (*enable_media)(struct net *net, struct tipc_bearer *b,
109 struct nlattr *attr[]);
110 void (*disable_media)(struct tipc_bearer *b);
111 int (*addr2str)(struct tipc_media_addr *addr,
112 char *strbuf,
113 int bufsz);
114 int (*addr2msg)(char *msg, struct tipc_media_addr *addr);
115 int (*msg2addr)(struct tipc_bearer *b,
116 struct tipc_media_addr *addr,
117 char *msg);
118 int (*raw2addr)(struct tipc_bearer *b,
119 struct tipc_media_addr *addr,
120 char *raw);
121 u32 priority;
122 u32 tolerance;
123 u32 min_win;
124 u32 max_win;
125 u32 mtu;
126 u32 type_id;
127 u32 hwaddr_len;
128 char name[TIPC_MAX_MEDIA_NAME];
129};
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156struct tipc_bearer {
157 void __rcu *media_ptr;
158 u32 mtu;
159 struct tipc_media_addr addr;
160 char name[TIPC_MAX_BEARER_NAME];
161 struct tipc_media *media;
162 struct tipc_media_addr bcast_addr;
163 struct packet_type pt;
164 struct rcu_head rcu;
165 u32 priority;
166 u32 min_win;
167 u32 max_win;
168 u32 tolerance;
169 u32 domain;
170 u32 identity;
171 struct tipc_discoverer *disc;
172 char net_plane;
173 unsigned long up;
174 refcount_t refcnt;
175};
176
177struct tipc_bearer_names {
178 char media_name[TIPC_MAX_MEDIA_NAME];
179 char if_name[TIPC_MAX_IF_NAME];
180};
181
182
183
184
185
186void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b);
187
188
189
190
191extern struct tipc_media eth_media_info;
192
193#ifdef CONFIG_TIPC_MEDIA_IB
194extern struct tipc_media ib_media_info;
195#endif
196#ifdef CONFIG_TIPC_MEDIA_UDP
197extern struct tipc_media udp_media_info;
198#endif
199
200int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info);
201int __tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info);
202int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info);
203int __tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info);
204int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb);
205int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info);
206int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info);
207int __tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info);
208int tipc_nl_bearer_add(struct sk_buff *skb, struct genl_info *info);
209
210int tipc_nl_media_dump(struct sk_buff *skb, struct netlink_callback *cb);
211int tipc_nl_media_get(struct sk_buff *skb, struct genl_info *info);
212int tipc_nl_media_set(struct sk_buff *skb, struct genl_info *info);
213int __tipc_nl_media_set(struct sk_buff *skb, struct genl_info *info);
214
215int tipc_media_set_priority(const char *name, u32 new_value);
216int tipc_media_set_window(const char *name, u32 new_value);
217int tipc_media_addr_printf(char *buf, int len, struct tipc_media_addr *a);
218int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b,
219 struct nlattr *attrs[]);
220bool tipc_bearer_hold(struct tipc_bearer *b);
221void tipc_bearer_put(struct tipc_bearer *b);
222void tipc_disable_l2_media(struct tipc_bearer *b);
223int tipc_l2_send_msg(struct net *net, struct sk_buff *buf,
224 struct tipc_bearer *b, struct tipc_media_addr *dest);
225
226void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest);
227void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest);
228struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name);
229int tipc_bearer_get_name(struct net *net, char *name, u32 bearer_id);
230struct tipc_media *tipc_media_find(const char *name);
231int tipc_bearer_setup(void);
232void tipc_bearer_cleanup(void);
233void tipc_bearer_stop(struct net *net);
234int tipc_bearer_mtu(struct net *net, u32 bearer_id);
235bool tipc_bearer_bcast_support(struct net *net, u32 bearer_id);
236void tipc_bearer_xmit_skb(struct net *net, u32 bearer_id,
237 struct sk_buff *skb,
238 struct tipc_media_addr *dest);
239void tipc_bearer_xmit(struct net *net, u32 bearer_id,
240 struct sk_buff_head *xmitq,
241 struct tipc_media_addr *dst,
242 struct tipc_node *__dnode);
243void tipc_bearer_bc_xmit(struct net *net, u32 bearer_id,
244 struct sk_buff_head *xmitq);
245void tipc_clone_to_loopback(struct net *net, struct sk_buff_head *pkts);
246int tipc_attach_loopback(struct net *net);
247void tipc_detach_loopback(struct net *net);
248
249static inline void tipc_loopback_trace(struct net *net,
250 struct sk_buff_head *pkts)
251{
252 if (unlikely(dev_nit_active(net->loopback_dev)))
253 tipc_clone_to_loopback(net, pkts);
254}
255
256
257static inline bool tipc_mtu_bad(struct net_device *dev, unsigned int reserve)
258{
259 if (dev->mtu >= TIPC_MIN_BEARER_MTU + reserve)
260 return false;
261 netdev_warn(dev, "MTU too low for tipc bearer\n");
262 return true;
263}
264
265#endif
266