]> bbs.cooldavid.org Git - net-next-2.6.git/blame - include/rdma/ib_addr.h
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
scm: lower SCM_MAX_FD
[net-next-2.6.git] / include / rdma / ib_addr.h
CommitLineData
7025fcd3
SH		 1/*
2 * Copyright (c) 2005 Voltaire Inc. All rights reserved.
3 * Copyright (c) 2005 Intel Corporation. All rights reserved.
4 *
a9474917
SH		 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.
7025fcd3
SH		 32 */
33
34#if !defined(IB_ADDR_H)
35#define IB_ADDR_H
36
37#include <linux/in.h>
38#include <linux/in6.h>
c4315d85 39#include <linux/if_arp.h>
7025fcd3
SH		 40#include <linux/netdevice.h>
41#include <linux/socket.h>
af7bd463 42#include <linux/if_vlan.h>
7025fcd3 43#include <rdma/ib_verbs.h>
3c86aa70 44#include <rdma/ib_pack.h>
7025fcd3 45
7a118df3
SH		 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
7025fcd3
SH		 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];
c4315d85 66 unsigned short dev_type;
6266ed6e 67 int bound_dev_if;
3c86aa70 68 enum rdma_transport_type transport;
7025fcd3
SH		 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.
7a118df3 80 * @client: Address client associated with request.
7025fcd3
SH		 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 */
7a118df3
SH		 93int rdma_resolve_ip(struct rdma_addr_client *client,
94 struct sockaddr *src_addr, struct sockaddr *dst_addr,
7025fcd3
SH		 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
07ebafba
TT		 102int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
103 const unsigned char *dst_dev_addr);
104
7025fcd3
SH		 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
faec2f7b
SH		 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
6f8372b6 128static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr)
7025fcd3 129{
6f8372b6 130 return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0;
7025fcd3
SH		 131}
132
af7bd463 133static inline void iboe_mac_vlan_to_ll(union ib_gid *gid, u8 *mac, u16 vid)
3c86aa70
EC		 134{
135 memset(gid->raw, 0, 16);
136 *((__be32 *) gid->raw) = cpu_to_be32(0xfe800000);
af7bd463
EC		 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 }
3c86aa70
EC		 144 memcpy(gid->raw + 13, mac + 3, 3);
145 memcpy(gid->raw + 8, mac, 3);
146 gid->raw[8] ^= 2;
147}
148
af7bd463
EC		 149static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev)
150{
151 return dev->priv_flags & IFF_802_1Q_VLAN ?
152 vlan_dev_vlan_id(dev) : 0xffff;
153}
154
3c86aa70
EC		 155static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
156 union ib_gid *gid)
157{
af7bd463
EC		 158 struct net_device *dev;
159 u16 vid = 0xffff;
160
161 dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if);
162 if (dev) {
163 vid = rdma_vlan_dev_vlan_id(dev);
164 dev_put(dev);
165 }
166
167 iboe_mac_vlan_to_ll(gid, dev_addr->src_dev_addr, vid);
3c86aa70
EC		 168}
169
6f8372b6 170static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
7025fcd3 171{
3c86aa70
EC		 172 if (dev_addr->transport == RDMA_TRANSPORT_IB &&
173 dev_addr->dev_type != ARPHRD_INFINIBAND)
174 iboe_addr_get_sgid(dev_addr, gid);
175 else
176 memcpy(gid, dev_addr->src_dev_addr +
177 rdma_addr_gid_offset(dev_addr), sizeof *gid);
7025fcd3
SH		 178}
179
6f8372b6 180static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
7025fcd3 181{
6f8372b6 182 memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
7025fcd3
SH		 183}
184
6f8372b6 185static inline void rdma_addr_get_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
7025fcd3 186{
6f8372b6 187 memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid);
7025fcd3
SH		 188}
189
6f8372b6 190static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
07ebafba 191{
6f8372b6 192 memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
07ebafba
TT		 193}
194
3c86aa70
EC		 195static inline enum ib_mtu iboe_get_mtu(int mtu)
196{
197 /*
198 * reduce IB headers from effective IBoE MTU. 28 stands for
199 * atomic header which is the biggest possible header after BTH
200 */
201 mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28;
202
203 if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096))
204 return IB_MTU_4096;
205 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048))
206 return IB_MTU_2048;
207 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024))
208 return IB_MTU_1024;
209 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512))
210 return IB_MTU_512;
211 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256))
212 return IB_MTU_256;
213 else
214 return 0;
215}
216
217static inline int iboe_get_rate(struct net_device *dev)
218{
219 struct ethtool_cmd cmd;
220
221 if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings ||
222 dev->ethtool_ops->get_settings(dev, &cmd))
223 return IB_RATE_PORT_CURRENT;
224
225 if (cmd.speed >= 40000)
226 return IB_RATE_40_GBPS;
227 else if (cmd.speed >= 30000)
228 return IB_RATE_30_GBPS;
229 else if (cmd.speed >= 20000)
230 return IB_RATE_20_GBPS;
231 else if (cmd.speed >= 10000)
232 return IB_RATE_10_GBPS;
233 else
234 return IB_RATE_PORT_CURRENT;
235}
236
237static inline int rdma_link_local_addr(struct in6_addr *addr)
238{
239 if (addr->s6_addr32[0] == htonl(0xfe800000) &&
240 addr->s6_addr32[1] == 0)
241 return 1;
242
243 return 0;
244}
245
246static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac)
247{
248 memcpy(mac, &addr->s6_addr[8], 3);
249 memcpy(mac + 3, &addr->s6_addr[13], 3);
250 mac[0] ^= 2;
251}
252
253static inline int rdma_is_multicast_addr(struct in6_addr *addr)
254{
255 return addr->s6_addr[0] == 0xff;
256}
257
258static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac)
259{
260 int i;
261
262 mac[0] = 0x33;
263 mac[1] = 0x33;
264 for (i = 2; i < 6; ++i)
265 mac[i] = addr->s6_addr[i + 10];
266}
267
af7bd463
EC		 268static inline u16 rdma_get_vlan_id(union ib_gid *dgid)
269{
270 u16 vid;
271
272 vid = dgid->raw[11] << 8 | dgid->raw[12];
273 return vid < 0x1000 ? vid : 0xffff;
274}
275
276static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev)
277{
278 return dev->priv_flags & IFF_802_1Q_VLAN ?
279 vlan_dev_real_dev(dev) : 0;
280}
281
7025fcd3 282#endif /* IB_ADDR_H */
Clone of davem's net-next-2.6 tree