1 /* 2 * net/tipc/ib_media.c: Infiniband bearer support for TIPC 3 * 4 * Copyright (c) 2013 Patrick McHardy <kaber@trash.net> 5 * 6 * Based on eth_media.c, which carries the following copyright notice: 7 * 8 * Copyright (c) 2001-2007, Ericsson AB 9 * Copyright (c) 2005-2008, 2011, Wind River Systems 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions are met: 14 * 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the names of the copyright holders nor the names of its 21 * contributors may be used to endorse or promote products derived from 22 * this software without specific prior written permission. 23 * 24 * Alternatively, this software may be distributed under the terms of the 25 * GNU General Public License ("GPL") version 2 as published by the Free 26 * Software Foundation. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 29 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 32 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 #include <linux/if_infiniband.h> 42 #include "core.h" 43 #include "bearer.h" 44 45 /* convert InfiniBand address (media address format) media address to string */ 46 static int tipc_ib_addr2str(struct tipc_media_addr *a, char *str_buf, 47 int str_size) 48 { 49 if (str_size < 60) /* 60 = 19 * strlen("xx:") + strlen("xx\0") */ 50 return 1; 51 52 sprintf(str_buf, "%20phC", a->value); 53 54 return 0; 55 } 56 57 /* Convert from media address format to discovery message addr format */ 58 static int tipc_ib_addr2msg(char *msg, struct tipc_media_addr *addr) 59 { 60 memset(msg, 0, TIPC_MEDIA_INFO_SIZE); 61 memcpy(msg, addr->value, INFINIBAND_ALEN); 62 return 0; 63 } 64 65 /* Convert raw InfiniBand address format to media addr format */ 66 static int tipc_ib_raw2addr(struct tipc_bearer *b, 67 struct tipc_media_addr *addr, 68 char *msg) 69 { 70 memset(addr, 0, sizeof(*addr)); 71 memcpy(addr->value, msg, INFINIBAND_ALEN); 72 addr->media_id = TIPC_MEDIA_TYPE_IB; 73 addr->broadcast = !memcmp(msg, b->bcast_addr.value, 74 INFINIBAND_ALEN); 75 return 0; 76 } 77 78 /* Convert discovery msg addr format to InfiniBand media addr format */ 79 static int tipc_ib_msg2addr(struct tipc_bearer *b, 80 struct tipc_media_addr *addr, 81 char *msg) 82 { 83 return tipc_ib_raw2addr(b, addr, msg); 84 } 85 86 /* InfiniBand media registration info */ 87 struct tipc_media ib_media_info = { 88 .send_msg = tipc_l2_send_msg, 89 .enable_media = tipc_enable_l2_media, 90 .disable_media = tipc_disable_l2_media, 91 .addr2str = tipc_ib_addr2str, 92 .addr2msg = tipc_ib_addr2msg, 93 .msg2addr = tipc_ib_msg2addr, 94 .raw2addr = tipc_ib_raw2addr, 95 .priority = TIPC_DEF_LINK_PRI, 96 .tolerance = TIPC_DEF_LINK_TOL, 97 .window = TIPC_DEF_LINK_WIN, 98 .type_id = TIPC_MEDIA_TYPE_IB, 99 .hwaddr_len = INFINIBAND_ALEN, 100 .name = "ib" 101 }; 102