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 <linux/if_vlan.h>
43 #include <rdma/ib_verbs.h>
44 #include <rdma/ib_pack.h>
46 struct rdma_addr_client
{
48 struct completion comp
;
52 * rdma_addr_register_client - Register an address client.
54 void rdma_addr_register_client(struct rdma_addr_client
*client
);
57 * rdma_addr_unregister_client - Deregister an address client.
58 * @client: Client object to deregister.
60 void rdma_addr_unregister_client(struct rdma_addr_client
*client
);
62 struct 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
;
68 enum rdma_transport_type transport
;
72 * rdma_translate_ip - Translate a local IP address to an RDMA hardware
75 int rdma_translate_ip(struct sockaddr
*addr
, struct rdma_dev_addr
*dev_addr
);
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
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
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.
93 int 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
),
100 void rdma_addr_cancel(struct rdma_dev_addr
*addr
);
102 int rdma_copy_addr(struct rdma_dev_addr
*dev_addr
, struct net_device
*dev
,
103 const unsigned char *dst_dev_addr
);
105 static inline int ip_addr_size(struct sockaddr
*addr
)
107 return addr
->sa_family
== AF_INET6
?
108 sizeof(struct sockaddr_in6
) : sizeof(struct sockaddr_in
);
111 static inline u16
ib_addr_get_pkey(struct rdma_dev_addr
*dev_addr
)
113 return ((u16
)dev_addr
->broadcast
[8] << 8) | (u16
)dev_addr
->broadcast
[9];
116 static inline void ib_addr_set_pkey(struct rdma_dev_addr
*dev_addr
, u16 pkey
)
118 dev_addr
->broadcast
[8] = pkey
>> 8;
119 dev_addr
->broadcast
[9] = (unsigned char) pkey
;
122 static inline void ib_addr_get_mgid(struct rdma_dev_addr
*dev_addr
,
125 memcpy(gid
, dev_addr
->broadcast
+ 4, sizeof *gid
);
128 static inline int rdma_addr_gid_offset(struct rdma_dev_addr
*dev_addr
)
130 return dev_addr
->dev_type
== ARPHRD_INFINIBAND
? 4 : 0;
133 static inline void iboe_mac_vlan_to_ll(union ib_gid
*gid
, u8
*mac
, u16 vid
)
135 memset(gid
->raw
, 0, 16);
136 *((__be32
*) gid
->raw
) = cpu_to_be32(0xfe800000);
138 gid
->raw
[12] = vid
& 0xff;
139 gid
->raw
[11] = vid
>> 8;
144 memcpy(gid
->raw
+ 13, mac
+ 3, 3);
145 memcpy(gid
->raw
+ 8, mac
, 3);
149 static inline u16
rdma_vlan_dev_vlan_id(const struct net_device
*dev
)
151 return dev
->priv_flags
& IFF_802_1Q_VLAN
?
152 vlan_dev_vlan_id(dev
) : 0xffff;
155 static inline void iboe_addr_get_sgid(struct rdma_dev_addr
*dev_addr
,
158 struct net_device
*dev
;
161 dev
= dev_get_by_index(&init_net
, dev_addr
->bound_dev_if
);
163 vid
= rdma_vlan_dev_vlan_id(dev
);
167 iboe_mac_vlan_to_ll(gid
, dev_addr
->src_dev_addr
, vid
);
170 static inline void rdma_addr_get_sgid(struct rdma_dev_addr
*dev_addr
, union ib_gid
*gid
)
172 if (dev_addr
->transport
== RDMA_TRANSPORT_IB
&&
173 dev_addr
->dev_type
!= ARPHRD_INFINIBAND
)
174 iboe_addr_get_sgid(dev_addr
, gid
);
176 memcpy(gid
, dev_addr
->src_dev_addr
+
177 rdma_addr_gid_offset(dev_addr
), sizeof *gid
);
180 static inline void rdma_addr_set_sgid(struct rdma_dev_addr
*dev_addr
, union ib_gid
*gid
)
182 memcpy(dev_addr
->src_dev_addr
+ rdma_addr_gid_offset(dev_addr
), gid
, sizeof *gid
);
185 static inline void rdma_addr_get_dgid(struct rdma_dev_addr
*dev_addr
, union ib_gid
*gid
)
187 memcpy(gid
, dev_addr
->dst_dev_addr
+ rdma_addr_gid_offset(dev_addr
), sizeof *gid
);
190 static inline void rdma_addr_set_dgid(struct rdma_dev_addr
*dev_addr
, union ib_gid
*gid
)
192 memcpy(dev_addr
->dst_dev_addr
+ rdma_addr_gid_offset(dev_addr
), gid
, sizeof *gid
);
195 static inline enum ib_mtu
iboe_get_mtu(int mtu
)
198 * reduce IB headers from effective IBoE MTU. 28 stands for
199 * atomic header which is the biggest possible header after BTH
201 mtu
= mtu
- IB_GRH_BYTES
- IB_BTH_BYTES
- 28;
203 if (mtu
>= ib_mtu_enum_to_int(IB_MTU_4096
))
205 else if (mtu
>= ib_mtu_enum_to_int(IB_MTU_2048
))
207 else if (mtu
>= ib_mtu_enum_to_int(IB_MTU_1024
))
209 else if (mtu
>= ib_mtu_enum_to_int(IB_MTU_512
))
211 else if (mtu
>= ib_mtu_enum_to_int(IB_MTU_256
))
217 static inline int iboe_get_rate(struct net_device
*dev
)
219 struct ethtool_cmd cmd
;
224 err
= __ethtool_get_settings(dev
, &cmd
);
227 return IB_RATE_PORT_CURRENT
;
229 speed
= ethtool_cmd_speed(&cmd
);
231 return IB_RATE_40_GBPS
;
232 else if (speed
>= 30000)
233 return IB_RATE_30_GBPS
;
234 else if (speed
>= 20000)
235 return IB_RATE_20_GBPS
;
236 else if (speed
>= 10000)
237 return IB_RATE_10_GBPS
;
239 return IB_RATE_PORT_CURRENT
;
242 static inline int rdma_link_local_addr(struct in6_addr
*addr
)
244 if (addr
->s6_addr32
[0] == htonl(0xfe800000) &&
245 addr
->s6_addr32
[1] == 0)
251 static inline void rdma_get_ll_mac(struct in6_addr
*addr
, u8
*mac
)
253 memcpy(mac
, &addr
->s6_addr
[8], 3);
254 memcpy(mac
+ 3, &addr
->s6_addr
[13], 3);
258 static inline int rdma_is_multicast_addr(struct in6_addr
*addr
)
260 return addr
->s6_addr
[0] == 0xff;
263 static inline void rdma_get_mcast_mac(struct in6_addr
*addr
, u8
*mac
)
269 for (i
= 2; i
< 6; ++i
)
270 mac
[i
] = addr
->s6_addr
[i
+ 10];
273 static inline u16
rdma_get_vlan_id(union ib_gid
*dgid
)
277 vid
= dgid
->raw
[11] << 8 | dgid
->raw
[12];
278 return vid
< 0x1000 ? vid
: 0xffff;
281 static inline struct net_device
*rdma_vlan_dev_real_dev(const struct net_device
*dev
)
283 return dev
->priv_flags
& IFF_802_1Q_VLAN
?
284 vlan_dev_real_dev(dev
) : 0;
287 #endif /* IB_ADDR_H */