7a118df3ea
Require registration with ib_addr module to prevent caller from unloading while a callback is in progress. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
150 lines
4.7 KiB
C
150 lines
4.7 KiB
C
/*
|
|
* 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_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 */
|