ib_addr.h (263102) | ib_addr.h (273135) |
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1/* 2 * Copyright (c) 2005 Voltaire Inc. All rights reserved. 3 * Copyright (c) 2005 Intel Corporation. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34#if !defined(IB_ADDR_H) 35#define IB_ADDR_H 36 37#include <linux/in.h> 38#include <linux/in6.h> 39#include <linux/if_arp.h> 40#include <linux/netdevice.h> 41#include <linux/socket.h> 42#include <rdma/ib_verbs.h> 43#include <rdma/ib_pack.h> | 1/* 2 * Copyright (c) 2005 Voltaire Inc. All rights reserved. 3 * Copyright (c) 2005 Intel Corporation. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34#if !defined(IB_ADDR_H) 35#define IB_ADDR_H 36 37#include <linux/in.h> 38#include <linux/in6.h> 39#include <linux/if_arp.h> 40#include <linux/netdevice.h> 41#include <linux/socket.h> 42#include <rdma/ib_verbs.h> 43#include <rdma/ib_pack.h> |
44#include <linux/ethtool.h> | |
45#include <linux/if_vlan.h> 46 47struct rdma_addr_client { 48 atomic_t refcount; 49 struct completion comp; 50}; 51 52/** 53 * rdma_addr_register_client - Register an address client. 54 */ 55void rdma_addr_register_client(struct rdma_addr_client *client); 56 57/** 58 * rdma_addr_unregister_client - Deregister an address client. 59 * @client: Client object to deregister. 60 */ 61void rdma_addr_unregister_client(struct rdma_addr_client *client); 62 63struct rdma_dev_addr { 64 unsigned char src_dev_addr[MAX_ADDR_LEN]; 65 unsigned char dst_dev_addr[MAX_ADDR_LEN]; 66 unsigned char broadcast[MAX_ADDR_LEN]; 67 unsigned short dev_type; 68 int bound_dev_if; 69 enum rdma_transport_type transport; 70}; 71 72/** 73 * rdma_translate_ip - Translate a local IP address to an RDMA hardware 74 * address. 75 */ 76int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr); 77 78/** 79 * rdma_resolve_ip - Resolve source and destination IP addresses to 80 * RDMA hardware addresses. 81 * @client: Address client associated with request. 82 * @src_addr: An optional source address to use in the resolution. If a 83 * source address is not provided, a usable address will be returned via 84 * the callback. 85 * @dst_addr: The destination address to resolve. 86 * @addr: A reference to a data location that will receive the resolved 87 * addresses. The data location must remain valid until the callback has 88 * been invoked. 89 * @timeout_ms: Amount of time to wait for the address resolution to complete. 90 * @callback: Call invoked once address resolution has completed, timed out, 91 * or been canceled. A status of 0 indicates success. 92 * @context: User-specified context associated with the call. 93 */ 94int rdma_resolve_ip(struct rdma_addr_client *client, 95 struct sockaddr *src_addr, struct sockaddr *dst_addr, 96 struct rdma_dev_addr *addr, int timeout_ms, 97 void (*callback)(int status, struct sockaddr *src_addr, 98 struct rdma_dev_addr *addr, void *context), 99 void *context); 100 101void rdma_addr_cancel(struct rdma_dev_addr *addr); 102 103int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev, 104 const unsigned char *dst_dev_addr); 105 106static inline int ip_addr_size(struct sockaddr *addr) 107{ 108 return addr->sa_family == AF_INET6 ? 109 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 110} 111 112static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr) 113{ 114 return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9]; 115} 116 117static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey) 118{ 119 dev_addr->broadcast[8] = pkey >> 8; 120 dev_addr->broadcast[9] = (unsigned char) pkey; 121} 122 123static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr, 124 union ib_gid *gid) 125{ 126 memcpy(gid, dev_addr->broadcast + 4, sizeof *gid); 127} 128 129static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr) 130{ 131 return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0; 132} 133 134static inline void iboe_mac_vlan_to_ll(union ib_gid *gid, u8 *mac, u16 vid) 135{ 136 memset(gid->raw, 0, 16); 137 *((u32 *)gid->raw) = cpu_to_be32(0xfe800000); 138 if (vid < 0x1000) { 139 gid->raw[12] = vid & 0xff; 140 gid->raw[11] = vid >> 8; 141 } else { 142 gid->raw[12] = 0xfe; 143 gid->raw[11] = 0xff; 144 } 145 146 memcpy(gid->raw + 13, mac + 3, 3); 147 memcpy(gid->raw + 8, mac, 3); 148 gid->raw[8] ^= 2; 149} 150 151static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev) 152{ 153#ifdef __linux__ 154 return dev->priv_flags & IFF_802_1Q_VLAN ? 155 vlan_dev_vlan_id(dev) : 0xffff; 156#else 157 uint16_t tag; 158 159 if (VLAN_TAG(__DECONST(struct ifnet *, dev), &tag) != 0) 160 return 0xffff; 161 return tag; 162#endif 163} 164 165static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr, 166 union ib_gid *gid) 167{ 168 struct net_device *dev; 169 u16 vid = 0xffff; 170 171 dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); 172 if (dev) { 173 vid = rdma_vlan_dev_vlan_id(dev); 174 dev_put(dev); 175 } 176 177 iboe_mac_vlan_to_ll(gid, dev_addr->src_dev_addr, vid); 178} 179 180static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 181{ 182 if (dev_addr->transport == RDMA_TRANSPORT_IB && 183 dev_addr->dev_type != ARPHRD_INFINIBAND) 184 iboe_addr_get_sgid(dev_addr, gid); 185 else 186 memcpy(gid, dev_addr->src_dev_addr + 187 rdma_addr_gid_offset(dev_addr), sizeof *gid); 188} 189 190static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 191{ 192 memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid); 193} 194 195static inline void rdma_addr_get_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 196{ 197 memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid); 198} 199 200static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 201{ 202 memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid); 203} 204 205static inline enum ib_mtu iboe_get_mtu(int mtu) 206{ 207 /* 208 * reduce IB headers from effective IBoE MTU. 28 stands for 209 * atomic header which is the biggest possible header after BTH 210 */ 211 mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28; 212 213 if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096)) 214 return IB_MTU_4096; 215 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048)) 216 return IB_MTU_2048; 217 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024)) 218 return IB_MTU_1024; 219 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512)) 220 return IB_MTU_512; 221 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256)) 222 return IB_MTU_256; 223 else 224 return 0; 225} 226 227#ifdef __linux__ 228static inline int iboe_get_rate(struct net_device *dev) 229{ 230 struct ethtool_cmd cmd; 231 232 if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings || 233 dev->ethtool_ops->get_settings(dev, &cmd)) 234 return IB_RATE_PORT_CURRENT; 235 236 if (cmd.speed >= 40000) 237 return IB_RATE_40_GBPS; 238 else if (cmd.speed >= 30000) 239 return IB_RATE_30_GBPS; 240 else if (cmd.speed >= 20000) 241 return IB_RATE_20_GBPS; 242 else if (cmd.speed >= 10000) 243 return IB_RATE_10_GBPS; 244 else 245 return IB_RATE_PORT_CURRENT; 246} 247#else 248static inline int iboe_get_rate(struct net_device *dev) 249{ 250 if (dev->if_baudrate >= IF_Gbps(40)) 251 return IB_RATE_40_GBPS; 252 else if (dev->if_baudrate >= IF_Gbps(30)) 253 return IB_RATE_30_GBPS; 254 else if (dev->if_baudrate >= IF_Gbps(20)) 255 return IB_RATE_20_GBPS; 256 else if (dev->if_baudrate >= IF_Gbps(10)) 257 return IB_RATE_10_GBPS; 258 else 259 return IB_RATE_PORT_CURRENT; 260} 261#endif 262 263static inline int rdma_link_local_addr(struct in6_addr *addr) 264{ 265 if (addr->s6_addr32[0] == cpu_to_be32(0xfe800000) && 266 addr->s6_addr32[1] == 0) 267 return 1; 268 269 return 0; 270} 271 272static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac) 273{ 274 memcpy(mac, &addr->s6_addr[8], 3); 275 memcpy(mac + 3, &addr->s6_addr[13], 3); 276 mac[0] ^= 2; 277} 278 279static inline int rdma_is_multicast_addr(struct in6_addr *addr) 280{ 281 return addr->s6_addr[0] == 0xff; 282} 283 284static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac) 285{ 286 int i; 287 288 mac[0] = 0x33; 289 mac[1] = 0x33; 290 for (i = 2; i < 6; ++i) 291 mac[i] = addr->s6_addr[i + 10]; 292} 293 294static inline u16 rdma_get_vlan_id(union ib_gid *dgid) 295{ 296 u16 vid; 297 298 vid = dgid->raw[11] << 8 | dgid->raw[12]; 299 return vid < 0x1000 ? vid : 0xffff; 300} 301 302static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev) 303{ 304#ifdef __linux__ 305 return dev->priv_flags & IFF_802_1Q_VLAN ? 306 vlan_dev_real_dev(dev) : 0; 307#else 308 return VLAN_TRUNKDEV(__DECONST(struct ifnet *, dev)); 309#endif 310} 311 312#endif /* IB_ADDR_H */ | 44#include <linux/if_vlan.h> 45 46struct rdma_addr_client { 47 atomic_t refcount; 48 struct completion comp; 49}; 50 51/** 52 * rdma_addr_register_client - Register an address client. 53 */ 54void rdma_addr_register_client(struct rdma_addr_client *client); 55 56/** 57 * rdma_addr_unregister_client - Deregister an address client. 58 * @client: Client object to deregister. 59 */ 60void rdma_addr_unregister_client(struct rdma_addr_client *client); 61 62struct rdma_dev_addr { 63 unsigned char src_dev_addr[MAX_ADDR_LEN]; 64 unsigned char dst_dev_addr[MAX_ADDR_LEN]; 65 unsigned char broadcast[MAX_ADDR_LEN]; 66 unsigned short dev_type; 67 int bound_dev_if; 68 enum rdma_transport_type transport; 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 net_device *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 int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr) 129{ 130 return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0; 131} 132 133static inline void iboe_mac_vlan_to_ll(union ib_gid *gid, u8 *mac, u16 vid) 134{ 135 memset(gid->raw, 0, 16); 136 *((u32 *)gid->raw) = cpu_to_be32(0xfe800000); 137 if (vid < 0x1000) { 138 gid->raw[12] = vid & 0xff; 139 gid->raw[11] = vid >> 8; 140 } else { 141 gid->raw[12] = 0xfe; 142 gid->raw[11] = 0xff; 143 } 144 145 memcpy(gid->raw + 13, mac + 3, 3); 146 memcpy(gid->raw + 8, mac, 3); 147 gid->raw[8] ^= 2; 148} 149 150static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev) 151{ 152#ifdef __linux__ 153 return dev->priv_flags & IFF_802_1Q_VLAN ? 154 vlan_dev_vlan_id(dev) : 0xffff; 155#else 156 uint16_t tag; 157 158 if (VLAN_TAG(__DECONST(struct ifnet *, dev), &tag) != 0) 159 return 0xffff; 160 return tag; 161#endif 162} 163 164static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr, 165 union ib_gid *gid) 166{ 167 struct net_device *dev; 168 u16 vid = 0xffff; 169 170 dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); 171 if (dev) { 172 vid = rdma_vlan_dev_vlan_id(dev); 173 dev_put(dev); 174 } 175 176 iboe_mac_vlan_to_ll(gid, dev_addr->src_dev_addr, vid); 177} 178 179static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 180{ 181 if (dev_addr->transport == RDMA_TRANSPORT_IB && 182 dev_addr->dev_type != ARPHRD_INFINIBAND) 183 iboe_addr_get_sgid(dev_addr, gid); 184 else 185 memcpy(gid, dev_addr->src_dev_addr + 186 rdma_addr_gid_offset(dev_addr), sizeof *gid); 187} 188 189static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 190{ 191 memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid); 192} 193 194static inline void rdma_addr_get_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 195{ 196 memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid); 197} 198 199static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) 200{ 201 memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid); 202} 203 204static inline enum ib_mtu iboe_get_mtu(int mtu) 205{ 206 /* 207 * reduce IB headers from effective IBoE MTU. 28 stands for 208 * atomic header which is the biggest possible header after BTH 209 */ 210 mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28; 211 212 if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096)) 213 return IB_MTU_4096; 214 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048)) 215 return IB_MTU_2048; 216 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024)) 217 return IB_MTU_1024; 218 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512)) 219 return IB_MTU_512; 220 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256)) 221 return IB_MTU_256; 222 else 223 return 0; 224} 225 226#ifdef __linux__ 227static inline int iboe_get_rate(struct net_device *dev) 228{ 229 struct ethtool_cmd cmd; 230 231 if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings || 232 dev->ethtool_ops->get_settings(dev, &cmd)) 233 return IB_RATE_PORT_CURRENT; 234 235 if (cmd.speed >= 40000) 236 return IB_RATE_40_GBPS; 237 else if (cmd.speed >= 30000) 238 return IB_RATE_30_GBPS; 239 else if (cmd.speed >= 20000) 240 return IB_RATE_20_GBPS; 241 else if (cmd.speed >= 10000) 242 return IB_RATE_10_GBPS; 243 else 244 return IB_RATE_PORT_CURRENT; 245} 246#else 247static inline int iboe_get_rate(struct net_device *dev) 248{ 249 if (dev->if_baudrate >= IF_Gbps(40)) 250 return IB_RATE_40_GBPS; 251 else if (dev->if_baudrate >= IF_Gbps(30)) 252 return IB_RATE_30_GBPS; 253 else if (dev->if_baudrate >= IF_Gbps(20)) 254 return IB_RATE_20_GBPS; 255 else if (dev->if_baudrate >= IF_Gbps(10)) 256 return IB_RATE_10_GBPS; 257 else 258 return IB_RATE_PORT_CURRENT; 259} 260#endif 261 262static inline int rdma_link_local_addr(struct in6_addr *addr) 263{ 264 if (addr->s6_addr32[0] == cpu_to_be32(0xfe800000) && 265 addr->s6_addr32[1] == 0) 266 return 1; 267 268 return 0; 269} 270 271static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac) 272{ 273 memcpy(mac, &addr->s6_addr[8], 3); 274 memcpy(mac + 3, &addr->s6_addr[13], 3); 275 mac[0] ^= 2; 276} 277 278static inline int rdma_is_multicast_addr(struct in6_addr *addr) 279{ 280 return addr->s6_addr[0] == 0xff; 281} 282 283static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac) 284{ 285 int i; 286 287 mac[0] = 0x33; 288 mac[1] = 0x33; 289 for (i = 2; i < 6; ++i) 290 mac[i] = addr->s6_addr[i + 10]; 291} 292 293static inline u16 rdma_get_vlan_id(union ib_gid *dgid) 294{ 295 u16 vid; 296 297 vid = dgid->raw[11] << 8 | dgid->raw[12]; 298 return vid < 0x1000 ? vid : 0xffff; 299} 300 301static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev) 302{ 303#ifdef __linux__ 304 return dev->priv_flags & IFF_802_1Q_VLAN ? 305 vlan_dev_real_dev(dev) : 0; 306#else 307 return VLAN_TRUNKDEV(__DECONST(struct ifnet *, dev)); 308#endif 309} 310 311#endif /* IB_ADDR_H */ |