[linux-2.6-block.git] / include / rdma / ib_addr.h

/*
 * Copyright (c) 2005 Voltaire Inc.  All rights reserved.
 * Copyright (c) 2005 Intel Corporation.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#if !defined(IB_ADDR_H)
#define IB_ADDR_H

#include <linux/in.h>
#include <linux/in6.h>
#include <linux/if_arp.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/socket.h>
#include <linux/if_vlan.h>
#include <net/ipv6.h>
#include <net/if_inet6.h>
#include <net/ip.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_pack.h>
#include <net/ipv6.h>

struct rdma_addr_client {
	atomic_t refcount;
	struct completion comp;
};

/**
 * rdma_addr_register_client - Register an address client.
 */
void rdma_addr_register_client(struct rdma_addr_client *client);

/**
 * rdma_addr_unregister_client - Deregister an address client.
 * @client: Client object to deregister.
 */
void rdma_addr_unregister_client(struct rdma_addr_client *client);

struct rdma_dev_addr {
	unsigned char src_dev_addr[MAX_ADDR_LEN];
	unsigned char dst_dev_addr[MAX_ADDR_LEN];
	unsigned char broadcast[MAX_ADDR_LEN];
	unsigned short dev_type;
	int bound_dev_if;
	enum rdma_transport_type transport;
};

/**
 * rdma_translate_ip - Translate a local IP address to an RDMA hardware
 *   address.
 */
int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr,
		      u16 *vlan_id);

/**
 * rdma_resolve_ip - Resolve source and destination IP addresses to
 *   RDMA hardware addresses.
 * @client: Address client associated with request.
 * @src_addr: An optional source address to use in the resolution.  If a
 *   source address is not provided, a usable address will be returned via
 *   the callback.
 * @dst_addr: The destination address to resolve.
 * @addr: A reference to a data location that will receive the resolved
 *   addresses.  The data location must remain valid until the callback has
 *   been invoked.
 * @timeout_ms: Amount of time to wait for the address resolution to complete.
 * @callback: Call invoked once address resolution has completed, timed out,
 *   or been canceled.  A status of 0 indicates success.
 * @context: User-specified context associated with the call.
 */
int rdma_resolve_ip(struct rdma_addr_client *client,
		    struct sockaddr *src_addr, struct sockaddr *dst_addr,
		    struct rdma_dev_addr *addr, int timeout_ms,
		    void (*callback)(int status, struct sockaddr *src_addr,
				     struct rdma_dev_addr *addr, void *context),
		    void *context);

void rdma_addr_cancel(struct rdma_dev_addr *addr);

int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
	      const unsigned char *dst_dev_addr);

int rdma_addr_size(struct sockaddr *addr);

int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id);
int rdma_addr_find_dmac_by_grh(union ib_gid *sgid, union ib_gid *dgid, u8 *smac,
			       u16 *vlan_id);

static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)
{
	return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9];
}

static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey)
{
	dev_addr->broadcast[8] = pkey >> 8;
	dev_addr->broadcast[9] = (unsigned char) pkey;
}

static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr,
				    union ib_gid *gid)
{
	memcpy(gid, dev_addr->broadcast + 4, sizeof *gid);
}

static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr)
{
	return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0;
}

static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev)
{
	return dev->priv_flags & IFF_802_1Q_VLAN ?
		vlan_dev_vlan_id(dev) : 0xffff;
}

static inline int rdma_ip2gid(struct sockaddr *addr, union ib_gid *gid)
{
	switch (addr->sa_family) {
	case AF_INET:
		ipv6_addr_set_v4mapped(((struct sockaddr_in *)
					addr)->sin_addr.s_addr,
				       (struct in6_addr *)gid);
		break;
	case AF_INET6:
		memcpy(gid->raw, &((struct sockaddr_in6 *)addr)->sin6_addr, 16);
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

/* Important - sockaddr should be a union of sockaddr_in and sockaddr_in6 */
static inline int rdma_gid2ip(struct sockaddr *out, union ib_gid *gid)
{
	if (ipv6_addr_v4mapped((struct in6_addr *)gid)) {
		struct sockaddr_in *out_in = (struct sockaddr_in *)out;
		memset(out_in, 0, sizeof(*out_in));
		out_in->sin_family = AF_INET;
		memcpy(&out_in->sin_addr.s_addr, gid->raw + 12, 4);
	} else {
		struct sockaddr_in6 *out_in = (struct sockaddr_in6 *)out;
		memset(out_in, 0, sizeof(*out_in));
		out_in->sin6_family = AF_INET6;
		memcpy(&out_in->sin6_addr.s6_addr, gid->raw, 16);
	}
	return 0;
}

static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
				      union ib_gid *gid)
{
	struct net_device *dev;
	struct in_device *ip4;

	dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if);
	if (dev) {
		ip4 = (struct in_device *)dev->ip_ptr;
		if (ip4 && ip4->ifa_list && ip4->ifa_list->ifa_address)
			ipv6_addr_set_v4mapped(ip4->ifa_list->ifa_address,
					       (struct in6_addr *)gid);
		dev_put(dev);
	}
}

static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
{
	if (dev_addr->transport == RDMA_TRANSPORT_IB &&
	    dev_addr->dev_type != ARPHRD_INFINIBAND)
		iboe_addr_get_sgid(dev_addr, gid);
	else
		memcpy(gid, dev_addr->src_dev_addr +
		       rdma_addr_gid_offset(dev_addr), sizeof *gid);
}

static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
{
	memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
}

static inline void rdma_addr_get_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
{
	memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid);
}

static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
{
	memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
}

static inline enum ib_mtu iboe_get_mtu(int mtu)
{
	/*
	 * reduce IB headers from effective IBoE MTU. 28 stands for
	 * atomic header which is the biggest possible header after BTH
	 */
	mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28;

	if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096))
		return IB_MTU_4096;
	else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048))
		return IB_MTU_2048;
	else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024))
		return IB_MTU_1024;
	else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512))
		return IB_MTU_512;
	else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256))
		return IB_MTU_256;
	else
		return 0;
}

static inline int iboe_get_rate(struct net_device *dev)
{
	struct ethtool_cmd cmd;
	u32 speed;
	int err;

	rtnl_lock();
	err = __ethtool_get_settings(dev, &cmd);
	rtnl_unlock();
	if (err)
		return IB_RATE_PORT_CURRENT;

	speed = ethtool_cmd_speed(&cmd);
	if (speed >= 40000)
		return IB_RATE_40_GBPS;
	else if (speed >= 30000)
		return IB_RATE_30_GBPS;
	else if (speed >= 20000)
		return IB_RATE_20_GBPS;
	else if (speed >= 10000)
		return IB_RATE_10_GBPS;
	else
		return IB_RATE_PORT_CURRENT;
}

static inline int rdma_link_local_addr(struct in6_addr *addr)
{
	if (addr->s6_addr32[0] == htonl(0xfe800000) &&
	    addr->s6_addr32[1] == 0)
		return 1;

	return 0;
}

static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac)
{
	memcpy(mac, &addr->s6_addr[8], 3);
	memcpy(mac + 3, &addr->s6_addr[13], 3);
	mac[0] ^= 2;
}

static inline int rdma_is_multicast_addr(struct in6_addr *addr)
{
	return addr->s6_addr[0] == 0xff;
}

static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac)
{
	int i;

	mac[0] = 0x33;
	mac[1] = 0x33;
	for (i = 2; i < 6; ++i)
		mac[i] = addr->s6_addr[i + 10];
}

static inline u16 rdma_get_vlan_id(union ib_gid *dgid)
{
	u16 vid;

	vid = dgid->raw[11] << 8 | dgid->raw[12];
	return vid < 0x1000 ? vid : 0xffff;
}

static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev)
{
	return dev->priv_flags & IFF_802_1Q_VLAN ?
		vlan_dev_real_dev(dev) : NULL;
}

#endif /* IB_ADDR_H */
Commit	Line	Data
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	40	#include <linux/netdevice.h>
7b85627b	41	#include <linux/inetdevice.h>
7025fcd3	42	#include <linux/socket.h>
af7bd463	43	#include <linux/if_vlan.h>
7b85627b MS	44	#include <net/ipv6.h>
	45	#include <net/if_inet6.h>
	46	#include <net/ip.h>
7025fcd3	47	#include <rdma/ib_verbs.h>
3c86aa70	48	#include <rdma/ib_pack.h>
dd5f03be	49	#include <net/ipv6.h>
7025fcd3	50
7a118df3 SH	51	struct rdma_addr_client {
	52	atomic_t refcount;
	53	struct completion comp;
	54	};
	55
	56	/**
	57	* rdma_addr_register_client - Register an address client.
	58	*/
	59	void rdma_addr_register_client(struct rdma_addr_client *client);
	60
	61	/**
	62	* rdma_addr_unregister_client - Deregister an address client.
	63	* @client: Client object to deregister.
	64	*/
	65	void rdma_addr_unregister_client(struct rdma_addr_client *client);
	66
7025fcd3 SH	67	struct rdma_dev_addr {
	68	unsigned char src_dev_addr[MAX_ADDR_LEN];
	69	unsigned char dst_dev_addr[MAX_ADDR_LEN];
	70	unsigned char broadcast[MAX_ADDR_LEN];
c4315d85	71	unsigned short dev_type;
6266ed6e	72	int bound_dev_if;
3c86aa70	73	enum rdma_transport_type transport;
7025fcd3 SH	74	};
	75
	76	/**
	77	* rdma_translate_ip - Translate a local IP address to an RDMA hardware
	78	* address.
	79	*/
dd5f03be MB	80	int rdma_translate_ip(struct sockaddr addr, struct rdma_dev_addr dev_addr,
dd5f03be MB	81	u16 *vlan_id);
7025fcd3 SH	82
	83	/**
	84	* rdma_resolve_ip - Resolve source and destination IP addresses to
	85	* RDMA hardware addresses.
7a118df3	86	* @client: Address client associated with request.
7025fcd3 SH	87	* @src_addr: An optional source address to use in the resolution. If a
	88	* source address is not provided, a usable address will be returned via
	89	* the callback.
	90	* @dst_addr: The destination address to resolve.
	91	* @addr: A reference to a data location that will receive the resolved
	92	* addresses. The data location must remain valid until the callback has
	93	* been invoked.
	94	* @timeout_ms: Amount of time to wait for the address resolution to complete.
	95	* @callback: Call invoked once address resolution has completed, timed out,
	96	* or been canceled. A status of 0 indicates success.
	97	* @context: User-specified context associated with the call.
	98	*/
7a118df3 SH	99	int rdma_resolve_ip(struct rdma_addr_client *client,
7a118df3 SH	100	struct sockaddr src_addr, struct sockaddr dst_addr,
7025fcd3 SH	101	struct rdma_dev_addr *addr, int timeout_ms,
	102	void (callback)(int status, struct sockaddr src_addr,
	103	struct rdma_dev_addr addr, void context),
	104	void *context);
	105
	106	void rdma_addr_cancel(struct rdma_dev_addr *addr);
	107
07ebafba TT	108	int rdma_copy_addr(struct rdma_dev_addr dev_addr, struct net_device dev,
	109	const unsigned char *dst_dev_addr);
	110
ef560861	111	int rdma_addr_size(struct sockaddr *addr);
7025fcd3	112
dd5f03be MB	113	int rdma_addr_find_smac_by_sgid(union ib_gid sgid, u8 smac, u16 *vlan_id);
	114	int rdma_addr_find_dmac_by_grh(union ib_gid sgid, union ib_gid dgid, u8 *smac,
	115	u16 *vlan_id);
	116
7025fcd3 SH	117	static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)
	118	{
	119	return ((u16)dev_addr->broadcast[8] << 8) \| (u16)dev_addr->broadcast[9];
	120	}
	121
	122	static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey)
	123	{
	124	dev_addr->broadcast[8] = pkey >> 8;
	125	dev_addr->broadcast[9] = (unsigned char) pkey;
	126	}
	127
faec2f7b SH	128	static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr,
	129	union ib_gid *gid)
	130	{
	131	memcpy(gid, dev_addr->broadcast + 4, sizeof *gid);
	132	}
	133
6f8372b6	134	static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr)
7025fcd3	135	{
6f8372b6	136	return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0;
7025fcd3 SH	137	}
7025fcd3 SH	138
7b85627b	139	static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev)
3c86aa70	140	{
7b85627b MS	141	return dev->priv_flags & IFF_802_1Q_VLAN ?
7b85627b MS	142	vlan_dev_vlan_id(dev) : 0xffff;
3c86aa70 EC	143	}
3c86aa70 EC	144
dd5f03be MB	145	static inline int rdma_ip2gid(struct sockaddr addr, union ib_gid gid)
	146	{
	147	switch (addr->sa_family) {
	148	case AF_INET:
	149	ipv6_addr_set_v4mapped(((struct sockaddr_in *)
	150	addr)->sin_addr.s_addr,
	151	(struct in6_addr *)gid);
	152	break;
	153	case AF_INET6:
	154	memcpy(gid->raw, &((struct sockaddr_in6 *)addr)->sin6_addr, 16);
	155	break;
	156	default:
	157	return -EINVAL;
	158	}
	159	return 0;
	160	}
	161
	162	/* Important - sockaddr should be a union of sockaddr_in and sockaddr_in6 */
	163	static inline int rdma_gid2ip(struct sockaddr out, union ib_gid gid)
	164	{
	165	if (ipv6_addr_v4mapped((struct in6_addr *)gid)) {
	166	struct sockaddr_in out_in = (struct sockaddr_in )out;
	167	memset(out_in, 0, sizeof(*out_in));
	168	out_in->sin_family = AF_INET;
	169	memcpy(&out_in->sin_addr.s_addr, gid->raw + 12, 4);
	170	} else {
	171	struct sockaddr_in6 out_in = (struct sockaddr_in6 )out;
	172	memset(out_in, 0, sizeof(*out_in));
	173	out_in->sin6_family = AF_INET6;
	174	memcpy(&out_in->sin6_addr.s6_addr, gid->raw, 16);
	175	}
	176	return 0;
	177	}
	178
3c86aa70 EC	179	static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
	180	union ib_gid *gid)
	181	{
af7bd463	182	struct net_device *dev;
7b85627b	183	struct in_device *ip4;
af7bd463 EC	184
	185	dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if);
	186	if (dev) {
7b85627b MS	187	ip4 = (struct in_device *)dev->ip_ptr;
	188	if (ip4 && ip4->ifa_list && ip4->ifa_list->ifa_address)
	189	ipv6_addr_set_v4mapped(ip4->ifa_list->ifa_address,
	190	(struct in6_addr *)gid);
af7bd463 EC	191	dev_put(dev);
af7bd463 EC	192	}
3c86aa70 EC	193	}
3c86aa70 EC	194
6f8372b6	195	static inline void rdma_addr_get_sgid(struct rdma_dev_addr dev_addr, union ib_gid gid)
7025fcd3	196	{
3c86aa70 EC	197	if (dev_addr->transport == RDMA_TRANSPORT_IB &&
	198	dev_addr->dev_type != ARPHRD_INFINIBAND)
	199	iboe_addr_get_sgid(dev_addr, gid);
	200	else
	201	memcpy(gid, dev_addr->src_dev_addr +
	202	rdma_addr_gid_offset(dev_addr), sizeof *gid);
7025fcd3 SH	203	}
7025fcd3 SH	204
6f8372b6	205	static inline void rdma_addr_set_sgid(struct rdma_dev_addr dev_addr, union ib_gid gid)
7025fcd3	206	{
6f8372b6	207	memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
7025fcd3 SH	208	}
7025fcd3 SH	209
6f8372b6	210	static inline void rdma_addr_get_dgid(struct rdma_dev_addr dev_addr, union ib_gid gid)
7025fcd3	211	{
6f8372b6	212	memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid);
7025fcd3 SH	213	}
7025fcd3 SH	214
6f8372b6	215	static inline void rdma_addr_set_dgid(struct rdma_dev_addr dev_addr, union ib_gid gid)
07ebafba	216	{
6f8372b6	217	memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
07ebafba TT	218	}
07ebafba TT	219
3c86aa70 EC	220	static inline enum ib_mtu iboe_get_mtu(int mtu)
	221	{
	222	/*
	223	* reduce IB headers from effective IBoE MTU. 28 stands for
	224	* atomic header which is the biggest possible header after BTH
	225	*/
	226	mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28;
	227
	228	if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096))
	229	return IB_MTU_4096;
	230	else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048))
	231	return IB_MTU_2048;
	232	else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024))
	233	return IB_MTU_1024;
	234	else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512))
	235	return IB_MTU_512;
	236	else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256))
	237	return IB_MTU_256;
	238	else
	239	return 0;
	240	}
	241
	242	static inline int iboe_get_rate(struct net_device *dev)
	243	{
	244	struct ethtool_cmd cmd;
8ae6daca	245	u32 speed;
4bc71cb9	246	int err;
3c86aa70	247
4bc71cb9 JP	248	rtnl_lock();
	249	err = __ethtool_get_settings(dev, &cmd);
	250	rtnl_unlock();
	251	if (err)
3c86aa70 EC	252	return IB_RATE_PORT_CURRENT;
3c86aa70 EC	253
8ae6daca DD	254	speed = ethtool_cmd_speed(&cmd);
8ae6daca DD	255	if (speed >= 40000)
3c86aa70	256	return IB_RATE_40_GBPS;
8ae6daca	257	else if (speed >= 30000)
3c86aa70	258	return IB_RATE_30_GBPS;
8ae6daca	259	else if (speed >= 20000)
3c86aa70	260	return IB_RATE_20_GBPS;
8ae6daca	261	else if (speed >= 10000)
3c86aa70 EC	262	return IB_RATE_10_GBPS;
	263	else
	264	return IB_RATE_PORT_CURRENT;
	265	}
	266
	267	static inline int rdma_link_local_addr(struct in6_addr *addr)
	268	{
	269	if (addr->s6_addr32[0] == htonl(0xfe800000) &&
	270	addr->s6_addr32[1] == 0)
	271	return 1;
	272
	273	return 0;
	274	}
	275
	276	static inline void rdma_get_ll_mac(struct in6_addr addr, u8 mac)
	277	{
	278	memcpy(mac, &addr->s6_addr[8], 3);
	279	memcpy(mac + 3, &addr->s6_addr[13], 3);
	280	mac[0] ^= 2;
	281	}
	282
	283	static inline int rdma_is_multicast_addr(struct in6_addr *addr)
	284	{
	285	return addr->s6_addr[0] == 0xff;
	286	}
	287
	288	static 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];
	296	}
	297
af7bd463 EC	298	static inline u16 rdma_get_vlan_id(union ib_gid *dgid)
	299	{
	300	u16 vid;
	301
	302	vid = dgid->raw[11] << 8 \| dgid->raw[12];
	303	return vid < 0x1000 ? vid : 0xffff;
	304	}
	305
	306	static inline struct net_device rdma_vlan_dev_real_dev(const struct net_device dev)
	307	{
	308	return dev->priv_flags & IFF_802_1Q_VLAN ?
c89d1bed	309	vlan_dev_real_dev(dev) : NULL;
af7bd463 EC	310	}
af7bd463 EC	311
7025fcd3	312	#endif /* IB_ADDR_H */