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ib_addr.h (273135) ib_addr.h (278886)
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

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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
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

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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)
34#ifndef 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>
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/inetdevice.h>
41#include <linux/socket.h>
42#include <linux/socket.h>
43#include <linux/if_vlan.h>
42#include <rdma/ib_verbs.h>
43#include <rdma/ib_pack.h>
44#include <rdma/ib_verbs.h>
45#include <rdma/ib_pack.h>
44#include <linux/if_vlan.h>
46#include <net/if_inet6.h>
47#include <net/ipv6.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.

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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 */
48
49struct rdma_addr_client {
50 atomic_t refcount;
51 struct completion comp;
52};
53
54/**
55 * rdma_addr_register_client - Register an address client.

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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 */
75int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr);
78int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr,
79 u16 *vlan_id);
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.

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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);
80
81/**
82 * rdma_resolve_ip - Resolve source and destination IP addresses to
83 * RDMA hardware addresses.
84 * @client: Address client associated with request.
85 * @src_addr: An optional source address to use in the resolution. If a
86 * source address is not provided, a usable address will be returned via
87 * the callback.

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100 void (*callback)(int status, struct sockaddr *src_addr,
101 struct rdma_dev_addr *addr, void *context),
102 void *context);
103
104void rdma_addr_cancel(struct rdma_dev_addr *addr);
105
106int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
107 const unsigned char *dst_dev_addr);
108int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id);
109int rdma_addr_find_dmac_by_grh(union ib_gid *sgid, union ib_gid *dgid, u8 *smac,
110 u16 *vlan_id);
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)

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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
111
112static inline int ip_addr_size(struct sockaddr *addr)
113{
114 return addr->sa_family == AF_INET6 ?
115 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in);
116}
117
118static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)

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132 memcpy(gid, dev_addr->broadcast + 4, sizeof *gid);
133}
134
135static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr)
136{
137 return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0;
138}
139
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{
140static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev)
141{
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;
142 uint16_t tag;
143
144 if (VLAN_TAG(__DECONST(struct ifnet *, dev), &tag) != 0)
145 return 0xffff;
146 return tag;
161#endif
162}
163
147}
148
164static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
165 union ib_gid *gid)
149static inline int rdma_ip2gid(struct sockaddr *addr, union ib_gid *gid)
166{
150{
167 struct net_device *dev;
168 u16 vid = 0xffff;
151 switch (addr->sa_family) {
152 case AF_INET:
153 ipv6_addr_set_v4mapped(((struct sockaddr_in *)addr)->sin_addr.s_addr,
154 (struct in6_addr *)gid);
155 break;
156 case AF_INET6:
157 memcpy(gid->raw, &((struct sockaddr_in6 *)addr)->sin6_addr,
158 16);
159 break;
160 default:
161 return -EINVAL;
162 }
163 return 0;
164}
169
165
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);
166/* Important - sockaddr should be a union of sockaddr_in and sockaddr_in6 */
167static inline int rdma_gid2ip(struct sockaddr *out, union ib_gid *gid)
168{
169 if (ipv6_addr_v4mapped((struct in6_addr *)gid)) {
170 struct sockaddr_in *out_in = (struct sockaddr_in *)out;
171 memset(out_in, 0, sizeof(*out_in));
172 out_in->sin_len = sizeof(*out_in);
173 out_in->sin_family = AF_INET;
174 memcpy(&out_in->sin_addr.s_addr, gid->raw + 12, 4);
175 } else {
176 struct sockaddr_in6 *out_in = (struct sockaddr_in6 *)out;
177 memset(out_in, 0, sizeof(*out_in));
178 out_in->sin6_family = AF_INET6;
179 memcpy(&out_in->sin6_addr.s6_addr, gid->raw, 16);
174 }
180 }
181 return 0;
182}
175
183
176 iboe_mac_vlan_to_ll(gid, dev_addr->src_dev_addr, vid);
184/* This func is called only in loopback ip address (127.0.0.1)
185 * case in which sgid is not relevant
186 */
187static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
188 union ib_gid *gid)
189{
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

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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
190}
191
192static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
193{
194 if (dev_addr->transport == RDMA_TRANSPORT_IB &&
195 dev_addr->dev_type != ARPHRD_INFINIBAND)
196 iboe_addr_get_sgid(dev_addr, gid);
197 else

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231 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512))
232 return IB_MTU_512;
233 else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256))
234 return IB_MTU_256;
235 else
236 return 0;
237}
238
226#ifdef __linux__
227static inline int iboe_get_rate(struct net_device *dev)
228{
239static inline int iboe_get_rate(struct net_device *dev)
240{
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}
241 if (dev->if_baudrate >= IF_Gbps(40))
242 return IB_RATE_40_GBPS;
243 else if (dev->if_baudrate >= IF_Gbps(30))
244 return IB_RATE_30_GBPS;
245 else if (dev->if_baudrate >= IF_Gbps(20))
246 return IB_RATE_20_GBPS;
247 else if (dev->if_baudrate >= IF_Gbps(10))
248 return IB_RATE_10_GBPS;
249 else
250 return IB_RATE_PORT_CURRENT;
251}
260#endif
261
262static inline int rdma_link_local_addr(struct in6_addr *addr)
263{
252
253static inline int rdma_link_local_addr(struct in6_addr *addr)
254{
264 if (addr->s6_addr32[0] == cpu_to_be32(0xfe800000) &&
255 if (addr->s6_addr32[0] == htonl(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
256 addr->s6_addr32[1] == 0)
257 return 1;
258
259 return 0;
260}
261
262static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac)
263{
264 memcpy(mac, &addr->s6_addr[8], 3);
265 memcpy(mac + 3, &addr->s6_addr[13], 3);
266 mac[0] ^= 2;
267}
268
269static inline int rdma_is_multicast_addr(struct in6_addr *addr)
270{
271 return addr->s6_addr[0] == 0xff;
272}
273
274static inline void resolve_mcast_mac(struct in6_addr *addr, u8 *mac)
275{
276 if (addr->s6_addr[0] != 0xff)
277 return;
278
279#ifdef DUAL_MODE_MCAST_MAC
280 if (addr->s6_addr[1] == 0x0e) /* IPv4 */
281 ip_eth_mc_map(addr->s6_addr32[3], mac);
282 else
283#endif
284 ipv6_eth_mc_map(addr, mac);
285}
286
287
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];

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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{
288static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac)
289{
290 int i;
291
292 mac[0] = 0x33;
293 mac[1] = 0x33;
294 for (i = 2; i < 6; ++i)
295 mac[i] = addr->s6_addr[i + 10];

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300 u16 vid;
301
302 vid = dgid->raw[11] << 8 | dgid->raw[12];
303 return vid < 0x1000 ? vid : 0xffff;
304}
305
306static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev)
307{
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 return VLAN_TRUNKDEV(__DECONST(struct ifnet *, dev));
308#endif
309}
310
311#endif /* IB_ADDR_H */
309}
310
311#endif /* IB_ADDR_H */