2 * include/net/tipc/tipc_bearer.h: Include file for privileged access to TIPC bearers
4 * Copyright (c) 2003-2006, Ericsson AB
5 * Copyright (c) 2005, Wind River Systems
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37 #ifndef _NET_TIPC_BEARER_H_
38 #define _NET_TIPC_BEARER_H_
42 #include <linux/tipc_config.h>
43 #include <linux/skbuff.h>
44 #include <linux/spinlock.h>
47 * Identifiers of supported TIPC media types
50 #define TIPC_MEDIA_TYPE_ETH 1
53 * Destination address structure used by TIPC bearers when sending messages
55 * IMPORTANT: The fields of this structure MUST be stored using the specified
56 * byte order indicated below, as the structure is exchanged between nodes
57 * as part of a link setup process.
60 struct tipc_media_addr {
61 __be32 type; /* bearer type (network byte order) */
63 __u8 eth_addr[6]; /* 48 bit Ethernet addr (byte array) */
65 /* Prototypes for other possible bearer types */
74 } addr_in; /* IP-based bearer */
75 __u16 sock_descr; /* generic socket bearer */
81 * struct tipc_bearer - TIPC bearer info available to privileged users
82 * @usr_handle: pointer to additional user-defined information about bearer
83 * @mtu: max packet size bearer can support
84 * @blocked: non-zero if bearer is blocked
85 * @lock: spinlock for controlling access to bearer
86 * @addr: media-specific address associated with bearer
87 * @name: bearer name (format = media:interface)
89 * Note: TIPC initializes "name" and "lock" fields; user is responsible for
90 * initialization all other fields when a bearer is enabled.
98 struct tipc_media_addr addr;
99 char name[TIPC_MAX_BEARER_NAME];
103 int tipc_register_media(u32 media_type,
105 int (*enable)(struct tipc_bearer *),
106 void (*disable)(struct tipc_bearer *),
107 int (*send_msg)(struct sk_buff *,
108 struct tipc_bearer *,
109 struct tipc_media_addr *),
110 char *(*addr2str)(struct tipc_media_addr *a,
113 struct tipc_media_addr *bcast_addr,
114 const u32 bearer_priority,
115 const u32 link_tolerance, /* [ms] */
116 const u32 send_window_limit);
118 void tipc_recv_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr);
120 int tipc_block_bearer(const char *name);
121 void tipc_continue(struct tipc_bearer *tb_ptr);
123 int tipc_enable_bearer(const char *bearer_name, u32 bcast_scope, u32 priority);
124 int tipc_disable_bearer(const char *name);