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 #define TIPC_MAX_IB_LINK_WIN 500 46 47 /* convert InfiniBand address (media address format) media address to string */ 48 static int tipc_ib_addr2str(struct tipc_media_addr *a, char *str_buf, 49 int str_size) 50 { 51 if (str_size < 60) /* 60 = 19 * strlen("xx:") + strlen("xx\0") */ 52 return 1; 53 54 sprintf(str_buf, "%20phC", a->value); 55 56 return 0; 57 } 58 59 /* Convert from media address format to discovery message addr format */ 60 static int tipc_ib_addr2msg(char *msg, struct tipc_media_addr *addr) 61 { 62 memset(msg, 0, TIPC_MEDIA_INFO_SIZE); 63 memcpy(msg, addr->value, INFINIBAND_ALEN); 64 return 0; 65 } 66 67 /* Convert raw InfiniBand address format to media addr format */ 68 static int tipc_ib_raw2addr(struct tipc_bearer *b, 69 struct tipc_media_addr *addr, 70 const char *msg) 71 { 72 memset(addr, 0, sizeof(*addr)); 73 memcpy(addr->value, msg, INFINIBAND_ALEN); 74 addr->media_id = TIPC_MEDIA_TYPE_IB; 75 addr->broadcast = !memcmp(msg, b->bcast_addr.value, 76 INFINIBAND_ALEN); 77 return 0; 78 } 79 80 /* Convert discovery msg addr format to InfiniBand media addr format */ 81 static int tipc_ib_msg2addr(struct tipc_bearer *b, 82 struct tipc_media_addr *addr, 83 char *msg) 84 { 85 return tipc_ib_raw2addr(b, addr, msg); 86 } 87 88 /* InfiniBand media registration info */ 89 struct tipc_media ib_media_info = { 90 .send_msg = tipc_l2_send_msg, 91 .enable_media = tipc_enable_l2_media, 92 .disable_media = tipc_disable_l2_media, 93 .addr2str = tipc_ib_addr2str, 94 .addr2msg = tipc_ib_addr2msg, 95 .msg2addr = tipc_ib_msg2addr, 96 .raw2addr = tipc_ib_raw2addr, 97 .priority = TIPC_DEF_LINK_PRI, 98 .tolerance = TIPC_DEF_LINK_TOL, 99 .min_win = TIPC_DEF_LINK_WIN, 100 .max_win = TIPC_MAX_IB_LINK_WIN, 101 .type_id = TIPC_MEDIA_TYPE_IB, 102 .hwaddr_len = INFINIBAND_ALEN, 103 .name = "ib" 104 }; 105