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 */ 29 30 #if !defined(IB_ADDR_H) 31 #define IB_ADDR_H 32 33 #include <linux/in.h> 34 #include <linux/in6.h> 35 #include <linux/netdevice.h> 36 #include <linux/socket.h> 37 #include <rdma/ib_verbs.h> 38 39 struct rdma_addr_client { 40 atomic_t refcount; 41 struct completion comp; 42 }; 43 44 /** 45 * rdma_addr_register_client - Register an address client. 46 */ 47 void rdma_addr_register_client(struct rdma_addr_client *client); 48 49 /** 50 * rdma_addr_unregister_client - Deregister an address client. 51 * @client: Client object to deregister. 52 */ 53 void rdma_addr_unregister_client(struct rdma_addr_client *client); 54 55 struct rdma_dev_addr { 56 unsigned char src_dev_addr[MAX_ADDR_LEN]; 57 unsigned char dst_dev_addr[MAX_ADDR_LEN]; 58 unsigned char broadcast[MAX_ADDR_LEN]; 59 enum rdma_node_type dev_type; 60 }; 61 62 /** 63 * rdma_translate_ip - Translate a local IP address to an RDMA hardware 64 * address. 65 */ 66 int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr); 67 68 /** 69 * rdma_resolve_ip - Resolve source and destination IP addresses to 70 * RDMA hardware addresses. 71 * @client: Address client associated with request. 72 * @src_addr: An optional source address to use in the resolution. If a 73 * source address is not provided, a usable address will be returned via 74 * the callback. 75 * @dst_addr: The destination address to resolve. 76 * @addr: A reference to a data location that will receive the resolved 77 * addresses. The data location must remain valid until the callback has 78 * been invoked. 79 * @timeout_ms: Amount of time to wait for the address resolution to complete. 80 * @callback: Call invoked once address resolution has completed, timed out, 81 * or been canceled. A status of 0 indicates success. 82 * @context: User-specified context associated with the call. 83 */ 84 int rdma_resolve_ip(struct rdma_addr_client *client, 85 struct sockaddr *src_addr, struct sockaddr *dst_addr, 86 struct rdma_dev_addr *addr, int timeout_ms, 87 void (*callback)(int status, struct sockaddr *src_addr, 88 struct rdma_dev_addr *addr, void *context), 89 void *context); 90 91 void rdma_addr_cancel(struct rdma_dev_addr *addr); 92 93 int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev, 94 const unsigned char *dst_dev_addr); 95 96 static inline int ip_addr_size(struct sockaddr *addr) 97 { 98 return addr->sa_family == AF_INET6 ? 99 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 100 } 101 102 static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr) 103 { 104 return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9]; 105 } 106 107 static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey) 108 { 109 dev_addr->broadcast[8] = pkey >> 8; 110 dev_addr->broadcast[9] = (unsigned char) pkey; 111 } 112 113 static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr, 114 union ib_gid *gid) 115 { 116 memcpy(gid, dev_addr->broadcast + 4, sizeof *gid); 117 } 118 119 static inline void ib_addr_get_sgid(struct rdma_dev_addr *dev_addr, 120 union ib_gid *gid) 121 { 122 memcpy(gid, dev_addr->src_dev_addr + 4, sizeof *gid); 123 } 124 125 static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr, 126 union ib_gid *gid) 127 { 128 memcpy(dev_addr->src_dev_addr + 4, gid, sizeof *gid); 129 } 130 131 static inline void ib_addr_get_dgid(struct rdma_dev_addr *dev_addr, 132 union ib_gid *gid) 133 { 134 memcpy(gid, dev_addr->dst_dev_addr + 4, sizeof *gid); 135 } 136 137 static inline void ib_addr_set_dgid(struct rdma_dev_addr *dev_addr, 138 union ib_gid *gid) 139 { 140 memcpy(dev_addr->dst_dev_addr + 4, gid, sizeof *gid); 141 } 142 143 static inline void iw_addr_get_sgid(struct rdma_dev_addr *dev_addr, 144 union ib_gid *gid) 145 { 146 memcpy(gid, dev_addr->src_dev_addr, sizeof *gid); 147 } 148 149 static inline void iw_addr_get_dgid(struct rdma_dev_addr *dev_addr, 150 union ib_gid *gid) 151 { 152 memcpy(gid, dev_addr->dst_dev_addr, sizeof *gid); 153 } 154 155 #endif /* IB_ADDR_H */ 156