1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * net/tipc/eth_media.c: Ethernet bearer support for TIPC
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (c) 2001-2007, 2013-2014, Ericsson AB
5*4882a593Smuzhiyun * Copyright (c) 2005-2008, 2011-2013, Wind River Systems
6*4882a593Smuzhiyun * All rights reserved.
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or without
9*4882a593Smuzhiyun * modification, are permitted provided that the following conditions are met:
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * 1. Redistributions of source code must retain the above copyright
12*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer.
13*4882a593Smuzhiyun * 2. Redistributions in binary form must reproduce the above copyright
14*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer in the
15*4882a593Smuzhiyun * documentation and/or other materials provided with the distribution.
16*4882a593Smuzhiyun * 3. Neither the names of the copyright holders nor the names of its
17*4882a593Smuzhiyun * contributors may be used to endorse or promote products derived from
18*4882a593Smuzhiyun * this software without specific prior written permission.
19*4882a593Smuzhiyun *
20*4882a593Smuzhiyun * Alternatively, this software may be distributed under the terms of the
21*4882a593Smuzhiyun * GNU General Public License ("GPL") version 2 as published by the Free
22*4882a593Smuzhiyun * Software Foundation.
23*4882a593Smuzhiyun *
24*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25*4882a593Smuzhiyun * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26*4882a593Smuzhiyun * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27*4882a593Smuzhiyun * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28*4882a593Smuzhiyun * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29*4882a593Smuzhiyun * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30*4882a593Smuzhiyun * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31*4882a593Smuzhiyun * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32*4882a593Smuzhiyun * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33*4882a593Smuzhiyun * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34*4882a593Smuzhiyun * POSSIBILITY OF SUCH DAMAGE.
35*4882a593Smuzhiyun */
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun #include "core.h"
38*4882a593Smuzhiyun #include "bearer.h"
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun /* Convert Ethernet address (media address format) to string */
tipc_eth_addr2str(struct tipc_media_addr * addr,char * strbuf,int bufsz)41*4882a593Smuzhiyun static int tipc_eth_addr2str(struct tipc_media_addr *addr,
42*4882a593Smuzhiyun char *strbuf, int bufsz)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun if (bufsz < 18) /* 18 = strlen("aa:bb:cc:dd:ee:ff\0") */
45*4882a593Smuzhiyun return 1;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun sprintf(strbuf, "%pM", addr->value);
48*4882a593Smuzhiyun return 0;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun /* Convert from media address format to discovery message addr format */
tipc_eth_addr2msg(char * msg,struct tipc_media_addr * addr)52*4882a593Smuzhiyun static int tipc_eth_addr2msg(char *msg, struct tipc_media_addr *addr)
53*4882a593Smuzhiyun {
54*4882a593Smuzhiyun memset(msg, 0, TIPC_MEDIA_INFO_SIZE);
55*4882a593Smuzhiyun msg[TIPC_MEDIA_TYPE_OFFSET] = TIPC_MEDIA_TYPE_ETH;
56*4882a593Smuzhiyun memcpy(msg + TIPC_MEDIA_ADDR_OFFSET, addr->value, ETH_ALEN);
57*4882a593Smuzhiyun return 0;
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun /* Convert raw mac address format to media addr format */
tipc_eth_raw2addr(struct tipc_bearer * b,struct tipc_media_addr * addr,char * msg)61*4882a593Smuzhiyun static int tipc_eth_raw2addr(struct tipc_bearer *b,
62*4882a593Smuzhiyun struct tipc_media_addr *addr,
63*4882a593Smuzhiyun char *msg)
64*4882a593Smuzhiyun {
65*4882a593Smuzhiyun memset(addr, 0, sizeof(*addr));
66*4882a593Smuzhiyun ether_addr_copy(addr->value, msg);
67*4882a593Smuzhiyun addr->media_id = TIPC_MEDIA_TYPE_ETH;
68*4882a593Smuzhiyun addr->broadcast = is_broadcast_ether_addr(addr->value);
69*4882a593Smuzhiyun return 0;
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun /* Convert discovery msg addr format to Ethernet media addr format */
tipc_eth_msg2addr(struct tipc_bearer * b,struct tipc_media_addr * addr,char * msg)73*4882a593Smuzhiyun static int tipc_eth_msg2addr(struct tipc_bearer *b,
74*4882a593Smuzhiyun struct tipc_media_addr *addr,
75*4882a593Smuzhiyun char *msg)
76*4882a593Smuzhiyun {
77*4882a593Smuzhiyun /* Skip past preamble: */
78*4882a593Smuzhiyun msg += TIPC_MEDIA_ADDR_OFFSET;
79*4882a593Smuzhiyun return tipc_eth_raw2addr(b, addr, msg);
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun /* Ethernet media registration info */
83*4882a593Smuzhiyun struct tipc_media eth_media_info = {
84*4882a593Smuzhiyun .send_msg = tipc_l2_send_msg,
85*4882a593Smuzhiyun .enable_media = tipc_enable_l2_media,
86*4882a593Smuzhiyun .disable_media = tipc_disable_l2_media,
87*4882a593Smuzhiyun .addr2str = tipc_eth_addr2str,
88*4882a593Smuzhiyun .addr2msg = tipc_eth_addr2msg,
89*4882a593Smuzhiyun .msg2addr = tipc_eth_msg2addr,
90*4882a593Smuzhiyun .raw2addr = tipc_eth_raw2addr,
91*4882a593Smuzhiyun .priority = TIPC_DEF_LINK_PRI,
92*4882a593Smuzhiyun .tolerance = TIPC_DEF_LINK_TOL,
93*4882a593Smuzhiyun .min_win = TIPC_DEF_LINK_WIN,
94*4882a593Smuzhiyun .max_win = TIPC_MAX_LINK_WIN,
95*4882a593Smuzhiyun .type_id = TIPC_MEDIA_TYPE_ETH,
96*4882a593Smuzhiyun .hwaddr_len = ETH_ALEN,
97*4882a593Smuzhiyun .name = "eth"
98*4882a593Smuzhiyun };
99