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/*

 * Copyright (c) 2005 Voltaire Inc.  All rights reserved.

 * Copyright (c) 2005 Intel Corporation.  All rights reserved.

 *

 * This Software is licensed under one of the following licenses:

 *

 * 1) under the terms of the "Common Public License 1.0" a copy of which is

 *    available from the Open Source Initiative, see

 *    http://www.opensource.org/licenses/cpl.php.

 *

 * 2) under the terms of the "The BSD License" a copy of which is

 *    available from the Open Source Initiative, see

 *    http://www.opensource.org/licenses/bsd-license.php.

 *

 * 3) under the terms of the "GNU General Public License (GPL) Version 2" a

 *    copy of which is available from the Open Source Initiative, see

 *    http://www.opensource.org/licenses/gpl-license.php.

 *

 * Licensee has the right to choose one of the above licenses.

 *

 * Redistributions of source code must retain the above copyright

 * notice and one of the license notices.

 *

 * Redistributions in binary form must reproduce both the above copyright

 * notice, one of the license notices in the documentation

 * and/or other materials provided with the distribution.

 *

 */

#if !defined(IB_ADDR_H)

#define IB_ADDR_H

#include <linux/in.h>

#include <linux/in6.h>

#include <linux/netdevice.h>

#include <linux/socket.h>

#include <rdma/ib_verbs.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];

        enum rdma_node_type dev_type;

};

/**

 * 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);

/**

 * 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);

static inline int ip_addr_size(struct sockaddr *addr)

{

        return addr->sa_family == AF_INET6 ?

               sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in);

}

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 void ib_addr_get_sgid(struct rdma_dev_addr *dev_addr,

                                    union ib_gid *gid)

{

        memcpy(gid, dev_addr->src_dev_addr + 4, sizeof *gid);

}

static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr,

                                    union ib_gid *gid)

{

        memcpy(dev_addr->src_dev_addr + 4, gid, sizeof *gid);

}

static inline void ib_addr_get_dgid(struct rdma_dev_addr *dev_addr,

                                    union ib_gid *gid)

{

        memcpy(gid, dev_addr->dst_dev_addr + 4, sizeof *gid);

}

static inline void ib_addr_set_dgid(struct rdma_dev_addr *dev_addr,

                                    union ib_gid *gid)

{

        memcpy(dev_addr->dst_dev_addr + 4, gid, sizeof *gid);

}

static inline void iw_addr_get_sgid(struct rdma_dev_addr *dev_addr,

                                    union ib_gid *gid)

{

        memcpy(gid, dev_addr->src_dev_addr, sizeof *gid);

}

static inline void iw_addr_get_dgid(struct rdma_dev_addr *dev_addr,

                                    union ib_gid *gid)

{

        memcpy(gid, dev_addr->dst_dev_addr, sizeof *gid);

}

#endif /* IB_ADDR_H */