2 * net/tipc/eth_media.c: Ethernet bearer support for TIPC
4 * Copyright (c) 2001-2007, 2013-2014, Ericsson AB
5 * Copyright (c) 2005-2008, 2011-2013, Wind River Systems
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40 /* Convert Ethernet address (media address format) to string */
41 static int tipc_eth_addr2str(struct tipc_media_addr *addr,
42 char *strbuf, int bufsz)
44 if (bufsz < 18) /* 18 = strlen("aa:bb:cc:dd:ee:ff\0") */
47 sprintf(strbuf, "%pM", addr->value);
51 /* Convert from media address format to discovery message addr format */
52 static int tipc_eth_addr2msg(char *msg, struct tipc_media_addr *addr)
54 memset(msg, 0, TIPC_MEDIA_INFO_SIZE);
55 msg[TIPC_MEDIA_TYPE_OFFSET] = TIPC_MEDIA_TYPE_ETH;
56 memcpy(msg + TIPC_MEDIA_ADDR_OFFSET, addr->value, ETH_ALEN);
60 /* Convert raw mac address format to media addr format */
61 static int tipc_eth_raw2addr(struct tipc_bearer *b,
62 struct tipc_media_addr *addr,
65 memset(addr, 0, sizeof(*addr));
66 ether_addr_copy(addr->value, msg);
67 addr->media_id = TIPC_MEDIA_TYPE_ETH;
68 addr->broadcast = is_broadcast_ether_addr(addr->value);
72 /* Convert discovery msg addr format to Ethernet media addr format */
73 static int tipc_eth_msg2addr(struct tipc_bearer *b,
74 struct tipc_media_addr *addr,
77 /* Skip past preamble: */
78 msg += TIPC_MEDIA_ADDR_OFFSET;
79 return tipc_eth_raw2addr(b, addr, msg);
82 /* Ethernet media registration info */
83 struct tipc_media eth_media_info = {
84 .send_msg = tipc_l2_send_msg,
85 .enable_media = tipc_enable_l2_media,
86 .disable_media = tipc_disable_l2_media,
87 .addr2str = tipc_eth_addr2str,
88 .addr2msg = tipc_eth_addr2msg,
89 .msg2addr = tipc_eth_msg2addr,
90 .raw2addr = tipc_eth_raw2addr,
91 .priority = TIPC_DEF_LINK_PRI,
92 .tolerance = TIPC_DEF_LINK_TOL,
93 .min_win = TIPC_DEF_LINK_WIN,
94 .max_win = TIPC_MAX_LINK_WIN,
95 .type_id = TIPC_MEDIA_TYPE_ETH,
96 .hwaddr_len = ETH_ALEN,