2 * Copyright (c) 2005 Voltaire Inc. All rights reserved.
3 * Copyright (c) 2005 Intel Corporation. All rights reserved.
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:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
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.
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
34 #if !defined(IB_ADDR_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>
45 struct rdma_addr_client {
47 struct completion comp;
51 * rdma_addr_register_client - Register an address client.
53 void rdma_addr_register_client(struct rdma_addr_client *client);
56 * rdma_addr_unregister_client - Deregister an address client.
57 * @client: Client object to deregister.
59 void rdma_addr_unregister_client(struct rdma_addr_client *client);
61 struct rdma_dev_addr {
62 unsigned char src_dev_addr[MAX_ADDR_LEN];
63 unsigned char dst_dev_addr[MAX_ADDR_LEN];
64 unsigned char broadcast[MAX_ADDR_LEN];
65 unsigned short dev_type;
67 enum rdma_transport_type transport;
71 * rdma_translate_ip - Translate a local IP address to an RDMA hardware
74 int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr);
77 * rdma_resolve_ip - Resolve source and destination IP addresses to
78 * RDMA hardware addresses.
79 * @client: Address client associated with request.
80 * @src_addr: An optional source address to use in the resolution. If a
81 * source address is not provided, a usable address will be returned via
83 * @dst_addr: The destination address to resolve.
84 * @addr: A reference to a data location that will receive the resolved
85 * addresses. The data location must remain valid until the callback has
87 * @timeout_ms: Amount of time to wait for the address resolution to complete.
88 * @callback: Call invoked once address resolution has completed, timed out,
89 * or been canceled. A status of 0 indicates success.
90 * @context: User-specified context associated with the call.
92 int rdma_resolve_ip(struct rdma_addr_client *client,
93 struct sockaddr *src_addr, struct sockaddr *dst_addr,
94 struct rdma_dev_addr *addr, int timeout_ms,
95 void (*callback)(int status, struct sockaddr *src_addr,
96 struct rdma_dev_addr *addr, void *context),
99 void rdma_addr_cancel(struct rdma_dev_addr *addr);
101 int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
102 const unsigned char *dst_dev_addr);
104 static inline int ip_addr_size(struct sockaddr *addr)
106 return addr->sa_family == AF_INET6 ?
107 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in);
110 static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)
112 return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9];
115 static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey)
117 dev_addr->broadcast[8] = pkey >> 8;
118 dev_addr->broadcast[9] = (unsigned char) pkey;
121 static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr,
124 memcpy(gid, dev_addr->broadcast + 4, sizeof *gid);
127 static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr)
129 return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0;
132 static inline void iboe_mac_to_ll(union ib_gid *gid, u8 *mac)
134 memset(gid->raw, 0, 16);
135 *((__be32 *) gid->raw) = cpu_to_be32(0xfe800000);
138 memcpy(gid->raw + 13, mac + 3, 3);
139 memcpy(gid->raw + 8, mac, 3);
143 static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
146 iboe_mac_to_ll(gid, dev_addr->src_dev_addr);
149 static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
151 if (dev_addr->transport == RDMA_TRANSPORT_IB &&
152 dev_addr->dev_type != ARPHRD_INFINIBAND)
153 iboe_addr_get_sgid(dev_addr, gid);
155 memcpy(gid, dev_addr->src_dev_addr +
156 rdma_addr_gid_offset(dev_addr), sizeof *gid);
159 static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
161 memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
164 static inline void rdma_addr_get_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
166 memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid);
169 static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
171 memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
174 static inline enum ib_mtu iboe_get_mtu(int mtu)
177 * reduce IB headers from effective IBoE MTU. 28 stands for
178 * atomic header which is the biggest possible header after BTH
180 mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28;
182 if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096))
184 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048))
186 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024))
188 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512))
190 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256))
196 static inline int iboe_get_rate(struct net_device *dev)
198 struct ethtool_cmd cmd;
200 if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings ||
201 dev->ethtool_ops->get_settings(dev, &cmd))
202 return IB_RATE_PORT_CURRENT;
204 if (cmd.speed >= 40000)
205 return IB_RATE_40_GBPS;
206 else if (cmd.speed >= 30000)
207 return IB_RATE_30_GBPS;
208 else if (cmd.speed >= 20000)
209 return IB_RATE_20_GBPS;
210 else if (cmd.speed >= 10000)
211 return IB_RATE_10_GBPS;
213 return IB_RATE_PORT_CURRENT;
216 static inline int rdma_link_local_addr(struct in6_addr *addr)
218 if (addr->s6_addr32[0] == htonl(0xfe800000) &&
219 addr->s6_addr32[1] == 0)
225 static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac)
227 memcpy(mac, &addr->s6_addr[8], 3);
228 memcpy(mac + 3, &addr->s6_addr[13], 3);
232 static inline int rdma_is_multicast_addr(struct in6_addr *addr)
234 return addr->s6_addr[0] == 0xff;
237 static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac)
243 for (i = 2; i < 6; ++i)
244 mac[i] = addr->s6_addr[i + 10];
247 #endif /* IB_ADDR_H */