1/* 2 3 * Copyright (c) 2005 Voltaire Inc. All rights reserved. 4 * Copyright (c) 2005 Intel Corporation. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35#if !defined(IB_ADDR_H) 36#define IB_ADDR_H 37/* 38 #include <linux/in.h> 39 #include <linux/in6.h> 40 #include <linux/if_arp.h> 41 #include <linux/netdevice.h> 42 #include <linux/socket.h> 43 #include <rdma/ib_verbs.h> 44 */ 45#include <rdma/ib_pack.h> 46/* 47 #include <linux/if_vlan.h> 48 49 struct rdma_addr_client { 50 atomic_t refcount; 51 struct completion comp; 52 }; 53 54 * 55 * rdma_addr_register_client - Register an address client. 56 57 void rdma_addr_register_client(struct rdma_addr_client *client); 58 59 * 60 * rdma_addr_unregister_client - Deregister an address client. 61 * @client: Client object to deregister. 62 63 void rdma_addr_unregister_client(struct rdma_addr_client *client); 64 65 struct rdma_dev_addr { 66 unsigned char src_dev_addr[MAX_ADDR_LEN]; 67 unsigned char dst_dev_addr[MAX_ADDR_LEN]; 68 unsigned char broadcast[MAX_ADDR_LEN]; 69 unsigned short dev_type; 70 int bound_dev_if; 71 enum rdma_transport_type transport; 72 }; 73 74 * 75 * rdma_translate_ip - Translate a local IP address to an RDMA hardware 76 * address. 77 78 int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr); 79 80 * 81 * rdma_resolve_ip - Resolve source and destination IP addresses to 82 * RDMA hardware addresses. 83 * @client: Address client associated with request. 84 * @src_addr: An optional source address to use in the resolution. If a 85 * source address is not provided, a usable address will be returned via 86 * the callback. 87 * @dst_addr: The destination address to resolve. 88 * @addr: A reference to a data location that will receive the resolved 89 * addresses. The data location must remain valid until the callback has 90 * been invoked. 91 * @timeout_ms: Amount of time to wait for the address resolution to complete. 92 * @callback: Call invoked once address resolution has completed, timed out, 93 * or been canceled. A status of 0 indicates success. 94 * @context: User-specified context associated with the call. 95 96 int rdma_resolve_ip(struct rdma_addr_client *client, 97 struct sockaddr *src_addr, struct sockaddr *dst_addr, 98 struct rdma_dev_addr *addr, int timeout_ms, 99 void (*callback)(int status, struct sockaddr *src_addr, 100 struct rdma_dev_addr *addr, void *context), 101 void *context); 102 103 void rdma_addr_cancel(struct rdma_dev_addr *addr); 104 105 int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev, 106 const unsigned char *dst_dev_addr); 107 108 static inline int ip_addr_size(struct sockaddr *addr) 109 { 110 return addr->sa_family == AF_INET6 ? 111 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 112 } 113 114 static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr) 115 { 116 return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9]; 117 } 118 119 static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey) 120 { 121 dev_addr->broadcast[8] = pkey >> 8; 122 dev_addr->broadcast[9] = (unsigned char) pkey; 123 } 124 125 static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr, 126 union ib_gid *gid) 127 { 128 memcpy(gid, dev_addr->broadcast + 4, sizeof *gid); 129 } 130 131 static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr) 132 { 133 return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0; 134 } 135 136 static inline void iboe_mac_vlan_to_ll(union ib_gid *gid, u8 *mac, u16 vid) 137 { 138 memset(gid->raw, 0, 16); 139 *((u32 *)gid->raw) = cpu_to_be32(0xfe800000); 140 if (vid < 0x1000) { 141 gid->raw[12] = vid & 0xff; 142 gid->raw[11] = vid >> 8; 143 } else { 144 gid->raw[12] = 0xfe; 145 gid->raw[11] = 0xff; 146 } 147 148 memcpy(gid->raw + 13, mac + 3, 3); 149 memcpy(gid->raw + 8, mac, 3); 150 gid->raw[8] ^= 2; 151 } 152 153 static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev) 154 { 155 #ifdef __linux__ 156 return dev->priv_flags & IFF_802_1Q_VLAN ? 157 vlan_dev_vlan_id(dev) : 0xffff; 158 #else 159 uint16_t tag; 160 161 if (VLAN_TAG(__DECONST(struct ifnet *, dev), &tag) != 0) 162 return 0xffff; 163 return tag; 164 #endif 165 } 166 167 static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr, 168 union ib_gid *gid) 169 { 170 struct net_device *dev; 171 u16 vid = 0xffff; 172 173 dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); 174 if (dev) { 175 vid = rdma_vlan_dev_vlan_id(dev); 176 dev_put(dev); 177 } 178 179 iboe_mac_vlan_to_ll(gid, dev_addr->src_dev_addr, vid); 180 } 181 182 static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 183 { 184 if (dev_addr->transport == RDMA_TRANSPORT_IB && 185 dev_addr->dev_type != ARPHRD_INFINIBAND) 186 iboe_addr_get_sgid(dev_addr, gid); 187 else 188 memcpy(gid, dev_addr->src_dev_addr + 189 rdma_addr_gid_offset(dev_addr), sizeof *gid); 190 } 191 192 static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 193 { 194 memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid); 195 } 196 197 static inline void rdma_addr_get_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 198 { 199 memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid); 200 } 201 202 static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 203 { 204 memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid); 205 } 206 */ 207static inline enum ib_mtu iboe_get_mtu(int mtu) { 208 209 /** reduce IB headers from effective IBoE MTU. 28 stands for 210 * atomic header which is the biggest possible header after BTH*/ 211 212 mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28; 213 214 if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096)) 215 return IB_MTU_4096; 216 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048)) 217 return IB_MTU_2048; 218 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024)) 219 return IB_MTU_1024; 220 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512)) 221 return IB_MTU_512; 222 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256)) 223 return IB_MTU_256; 224 else 225 return 0; 226} 227/* 228 #ifdef __linux__ 229 static inline int iboe_get_rate(struct net_device *dev) 230 { 231 struct ethtool_cmd cmd; 232 233 if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings || 234 dev->ethtool_ops->get_settings(dev, &cmd)) 235 return IB_RATE_PORT_CURRENT; 236 237 if (cmd.speed >= 40000) 238 return IB_RATE_40_GBPS; 239 else if (cmd.speed >= 30000) 240 return IB_RATE_30_GBPS; 241 else if (cmd.speed >= 20000) 242 return IB_RATE_20_GBPS; 243 else if (cmd.speed >= 10000) 244 return IB_RATE_10_GBPS; 245 else 246 return IB_RATE_PORT_CURRENT; 247 } 248 #else 249 static inline int iboe_get_rate(struct net_device *dev) 250 { 251 uintmax_t baudrate; 252 int exp; 253 254 baudrate = dev->if_baudrate; 255 for (exp = dev->if_baudrate_pf; exp > 0; exp--) 256 baudrate *= 10; 257 if (baudrate >= IF_Gbps(40)) 258 return IB_RATE_40_GBPS; 259 else if (baudrate >= IF_Gbps(30)) 260 return IB_RATE_30_GBPS; 261 else if (baudrate >= IF_Gbps(20)) 262 return IB_RATE_20_GBPS; 263 else if (baudrate >= IF_Gbps(10)) 264 return IB_RATE_10_GBPS; 265 else 266 return IB_RATE_PORT_CURRENT; 267 } 268 #endif 269 270 static inline int rdma_link_local_addr(struct in6_addr *addr) 271 { 272 if (addr->s6_addr32[0] == cpu_to_be32(0xfe800000) && 273 addr->s6_addr32[1] == 0) 274 return 1; 275 276 return 0; 277 } 278 279 static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac) 280 { 281 memcpy(mac, &addr->s6_addr[8], 3); 282 memcpy(mac + 3, &addr->s6_addr[13], 3); 283 mac[0] ^= 2; 284 } 285 286 static inline int rdma_is_multicast_addr(struct in6_addr *addr) 287 { 288 return addr->s6_addr[0] == 0xff; 289 } 290 291 static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac) 292 { 293 int i; 294 295 mac[0] = 0x33; 296 mac[1] = 0x33; 297 for (i = 2; i < 6; ++i) 298 mac[i] = addr->s6_addr[i + 10]; 299 } 300 301 static inline u16 rdma_get_vlan_id(union ib_gid *dgid) 302 { 303 u16 vid; 304 305 vid = dgid->raw[11] << 8 | dgid->raw[12]; 306 return vid < 0x1000 ? vid : 0xffff; 307 } 308 309 static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev) 310 { 311 #ifdef __linux__ 312 return dev->priv_flags & IFF_802_1Q_VLAN ? 313 vlan_dev_real_dev(dev) : 0; 314 #else 315 return VLAN_TRUNKDEV(__DECONST(struct ifnet *, dev)); 316 #endif 317 } 318 */ 319#endif /*IB_ADDR_H*/ 320