1/* 2 * Copyright (c) 2005 Voltaire Inc. All rights reserved. 3 * Copyright (c) 2005 Intel Corporation. All rights reserved. 4 * 5 * This Software is licensed under one of the following licenses: 6 * 7 * 1) under the terms of the "Common Public License 1.0" a copy of which is 8 * available from the Open Source Initiative, see 9 * http://www.opensource.org/licenses/cpl.php. 10 * 11 * 2) under the terms of the "The BSD License" a copy of which is 12 * available from the Open Source Initiative, see 13 * http://www.opensource.org/licenses/bsd-license.php. 14 * 15 * 3) under the terms of the "GNU General Public License (GPL) Version 2" a 16 * copy of which is available from the Open Source Initiative, see 17 * http://www.opensource.org/licenses/gpl-license.php. 18 * 19 * Licensee has the right to choose one of the above licenses. 20 * 21 * Redistributions of source code must retain the above copyright 22 * notice and one of the license notices. 23 * 24 * Redistributions in binary form must reproduce both the above copyright 25 * notice, one of the license notices in the documentation 26 * and/or other materials provided with the distribution. 27 * 28 * $FreeBSD$ 29 * 30 */ 31 32#if !defined(IB_ADDR_H) 33#define IB_ADDR_H 34 35#include <sys/param.h> 36#include <sys/proc.h> 37#include <sys/condvar.h> 38 39#include <net/if.h> 40#include <net/ethernet.h> 41 42#include <contrib/rdma/ib_verbs.h> 43 44 45#define MAX_ADDR_LEN 20 46 47struct rdma_addr_client { 48 int refcount; 49 struct cv comp; 50 struct mtx lock; 51}; 52 53/** 54 * rdma_addr_register_client - Register an address client. 55 */ 56void rdma_addr_register_client(struct rdma_addr_client *client); 57 58/** 59 * rdma_addr_unregister_client - Deregister an address client. 60 * @client: Client object to deregister. 61 */ 62void rdma_addr_unregister_client(struct rdma_addr_client *client); 63 64struct rdma_dev_addr { 65 unsigned char src_dev_addr[MAX_ADDR_LEN]; 66 unsigned char dst_dev_addr[MAX_ADDR_LEN]; 67 unsigned char broadcast[MAX_ADDR_LEN]; 68 enum rdma_node_type dev_type; 69}; 70 71/** 72 * rdma_translate_ip - Translate a local IP address to an RDMA hardware 73 * address. 74 */ 75int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr); 76 77/** 78 * rdma_resolve_ip - Resolve source and destination IP addresses to 79 * RDMA hardware addresses. 80 * @client: Address client associated with request. 81 * @src_addr: An optional source address to use in the resolution. If a 82 * source address is not provided, a usable address will be returned via 83 * the callback. 84 * @dst_addr: The destination address to resolve. 85 * @addr: A reference to a data location that will receive the resolved 86 * addresses. The data location must remain valid until the callback has 87 * been invoked. 88 * @timeout_ms: Amount of time to wait for the address resolution to complete. 89 * @callback: Call invoked once address resolution has completed, timed out, 90 * or been canceled. A status of 0 indicates success. 91 * @context: User-specified context associated with the call. 92 */ 93int rdma_resolve_ip(struct rdma_addr_client *client, 94 struct sockaddr *src_addr, struct sockaddr *dst_addr, 95 struct rdma_dev_addr *addr, int timeout_ms, 96 void (*callback)(int status, struct sockaddr *src_addr, 97 struct rdma_dev_addr *addr, void *context), 98 void *context); 99 100void rdma_addr_cancel(struct rdma_dev_addr *addr); 101 102int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct ifnet *dev, 103 const unsigned char *dst_dev_addr); 104 105static inline int ip_addr_size(struct sockaddr *addr) 106{ 107 return addr->sa_family == AF_INET6 ? 108 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 109} 110 111static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr) 112{ 113 return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9]; 114} 115 116static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey) 117{ 118 dev_addr->broadcast[8] = pkey >> 8; 119 dev_addr->broadcast[9] = (unsigned char) pkey; 120} 121 122static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr, 123 union ib_gid *gid) 124{ 125 memcpy(gid, dev_addr->broadcast + 4, sizeof *gid); 126} 127 128static inline void ib_addr_get_sgid(struct rdma_dev_addr *dev_addr, 129 union ib_gid *gid) 130{ 131 memcpy(gid, dev_addr->src_dev_addr + 4, sizeof *gid); 132} 133 134static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr, 135 union ib_gid *gid) 136{ 137 memcpy(dev_addr->src_dev_addr + 4, gid, sizeof *gid); 138} 139 140static inline void ib_addr_get_dgid(struct rdma_dev_addr *dev_addr, 141 union ib_gid *gid) 142{ 143 memcpy(gid, dev_addr->dst_dev_addr + 4, sizeof *gid); 144} 145 146static inline void ib_addr_set_dgid(struct rdma_dev_addr *dev_addr, 147 union ib_gid *gid) 148{ 149 memcpy(dev_addr->dst_dev_addr + 4, gid, sizeof *gid); 150} 151 152static inline void iw_addr_get_sgid(struct rdma_dev_addr *dev_addr, 153 union ib_gid *gid) 154{ 155 memcpy(gid, dev_addr->src_dev_addr, sizeof *gid); 156} 157 158static inline void iw_addr_get_dgid(struct rdma_dev_addr *dev_addr, 159 union ib_gid *gid) 160{ 161 memcpy(gid, dev_addr->dst_dev_addr, sizeof *gid); 162} 163 164#endif /* IB_ADDR_H */ 165