2 * include/net/tipc/tipc_bearer.h: Include file for privileged access to TIPC bearers
4 * Copyright (c) 2003-2005, Ericsson Research Canada
5 * Copyright (c) 2005, Wind River Systems
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38 #ifndef _NET_TIPC_BEARER_H_
39 #define _NET_TIPC_BEARER_H_
43 #include <linux/tipc_config.h>
44 #include <linux/skbuff.h>
45 #include <linux/spinlock.h>
48 * Identifiers of supported TIPC media types
51 #define TIPC_MEDIA_TYPE_ETH 1
53 struct tipc_media_addr {
56 __u8 eth_addr[6]; /* Ethernet bearer */
58 /* Prototypes for other possible bearer types */
67 } addr_in; /* IP-based bearer */
68 __u16 sock_descr; /* generic socket bearer */
74 * struct tipc_bearer - TIPC bearer info available to privileged users
75 * @usr_handle: pointer to additional user-defined information about bearer
76 * @mtu: max packet size bearer can support
77 * @blocked: non-zero if bearer is blocked
78 * @lock: spinlock for controlling access to bearer
79 * @addr: media-specific address associated with bearer
80 * @name: bearer name (format = media:interface)
82 * Note: TIPC initializes "name" and "lock" fields; user is responsible for
83 * initialization all other fields when a bearer is enabled.
91 struct tipc_media_addr addr;
92 char name[TIPC_MAX_BEARER_NAME];
96 int tipc_register_media(u32 media_type,
98 int (*enable)(struct tipc_bearer *),
99 void (*disable)(struct tipc_bearer *),
100 int (*send_msg)(struct sk_buff *,
101 struct tipc_bearer *,
102 struct tipc_media_addr *),
103 char *(*addr2str)(struct tipc_media_addr *a,
106 struct tipc_media_addr *bcast_addr,
107 const u32 bearer_priority,
108 const u32 link_tolerance, /* [ms] */
109 const u32 send_window_limit);
111 void tipc_recv_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr);
113 int tipc_block_bearer(const char *name);
114 void tipc_continue(struct tipc_bearer *tb_ptr);
116 int tipc_enable_bearer(const char *bearer_name, u32 bcast_scope, u32 priority);
117 int tipc_disable_bearer(const char *name);