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_dev_addr { 40 unsigned char src_dev_addr[MAX_ADDR_LEN]; 41 unsigned char dst_dev_addr[MAX_ADDR_LEN]; 42 unsigned char broadcast[MAX_ADDR_LEN]; 43 enum ib_node_type dev_type; 44 }; 45 46 /** 47 * rdma_translate_ip - Translate a local IP address to an RDMA hardware 48 * address. 49 */ 50 int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr); 51 52 /** 53 * rdma_resolve_ip - Resolve source and destination IP addresses to 54 * RDMA hardware addresses. 55 * @src_addr: An optional source address to use in the resolution. If a 56 * source address is not provided, a usable address will be returned via 57 * the callback. 58 * @dst_addr: The destination address to resolve. 59 * @addr: A reference to a data location that will receive the resolved 60 * addresses. The data location must remain valid until the callback has 61 * been invoked. 62 * @timeout_ms: Amount of time to wait for the address resolution to complete. 63 * @callback: Call invoked once address resolution has completed, timed out, 64 * or been canceled. A status of 0 indicates success. 65 * @context: User-specified context associated with the call. 66 */ 67 int rdma_resolve_ip(struct sockaddr *src_addr, struct sockaddr *dst_addr, 68 struct rdma_dev_addr *addr, int timeout_ms, 69 void (*callback)(int status, struct sockaddr *src_addr, 70 struct rdma_dev_addr *addr, void *context), 71 void *context); 72 73 void rdma_addr_cancel(struct rdma_dev_addr *addr); 74 75 static inline int ip_addr_size(struct sockaddr *addr) 76 { 77 return addr->sa_family == AF_INET6 ? 78 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 79 } 80 81 static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr) 82 { 83 return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9]; 84 } 85 86 static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey) 87 { 88 dev_addr->broadcast[8] = pkey >> 8; 89 dev_addr->broadcast[9] = (unsigned char) pkey; 90 } 91 92 static inline union ib_gid *ib_addr_get_sgid(struct rdma_dev_addr *dev_addr) 93 { 94 return (union ib_gid *) (dev_addr->src_dev_addr + 4); 95 } 96 97 static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr, 98 union ib_gid *gid) 99 { 100 memcpy(dev_addr->src_dev_addr + 4, gid, sizeof *gid); 101 } 102 103 static inline union ib_gid *ib_addr_get_dgid(struct rdma_dev_addr *dev_addr) 104 { 105 return (union ib_gid *) (dev_addr->dst_dev_addr + 4); 106 } 107 108 static inline void ib_addr_set_dgid(struct rdma_dev_addr *dev_addr, 109 union ib_gid *gid) 110 { 111 memcpy(dev_addr->dst_dev_addr + 4, gid, sizeof *gid); 112 } 113 114 #endif /* IB_ADDR_H */ 115