2 * net/tipc/eth_media.c: Ethernet bearer support for TIPC
4 * Copyright (c) 2001-2007, 2013, Ericsson AB
5 * Copyright (c) 2005-2008, 2011-2013, Wind River Systems
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9 * modification, are permitted provided that the following conditions are met:
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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 #define ETH_ADDR_OFFSET 4 /* message header offset of MAC address */
42 /* convert Ethernet address to string */
43 static int tipc_eth_addr2str(struct tipc_media_addr
*a
, char *str_buf
,
46 if (str_size
< 18) /* 18 = strlen("aa:bb:cc:dd:ee:ff\0") */
49 sprintf(str_buf
, "%pM", a
->value
);
53 /* convert Ethernet address format to message header format */
54 static int tipc_eth_addr2msg(struct tipc_media_addr
*a
, char *msg_area
)
56 memset(msg_area
, 0, TIPC_MEDIA_ADDR_SIZE
);
57 msg_area
[TIPC_MEDIA_TYPE_OFFSET
] = TIPC_MEDIA_TYPE_ETH
;
58 memcpy(msg_area
+ ETH_ADDR_OFFSET
, a
->value
, ETH_ALEN
);
62 /* convert message header address format to Ethernet format */
63 static int tipc_eth_msg2addr(const struct tipc_bearer
*tb_ptr
,
64 struct tipc_media_addr
*a
, char *msg_area
)
66 if (msg_area
[TIPC_MEDIA_TYPE_OFFSET
] != TIPC_MEDIA_TYPE_ETH
)
69 tipc_l2_media_addr_set(tb_ptr
, a
, msg_area
+ ETH_ADDR_OFFSET
);
73 /* Ethernet media registration info */
74 struct tipc_media eth_media_info
= {
75 .send_msg
= tipc_l2_send_msg
,
76 .enable_media
= tipc_enable_l2_media
,
77 .disable_media
= tipc_disable_l2_media
,
78 .addr2str
= tipc_eth_addr2str
,
79 .addr2msg
= tipc_eth_addr2msg
,
80 .msg2addr
= tipc_eth_msg2addr
,
81 .priority
= TIPC_DEF_LINK_PRI
,
82 .tolerance
= TIPC_DEF_LINK_TOL
,
83 .window
= TIPC_DEF_LINK_WIN
,
84 .type_id
= TIPC_MEDIA_TYPE_ETH
,
85 .hwaddr_len
= ETH_ALEN
,