7025fcd36b
Add an address translation service that maps IP addresses to InfiniBand GID addresses using IPoIB. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/*
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* Copyright (c) 2005 Voltaire Inc. All rights reserved.
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* Copyright (c) 2005 Intel Corporation. All rights reserved.
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*
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* This Software is licensed under one of the following licenses:
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*
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* 1) under the terms of the "Common Public License 1.0" a copy of which is
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* available from the Open Source Initiative, see
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* http://www.opensource.org/licenses/cpl.php.
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*
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* 2) under the terms of the "The BSD License" a copy of which is
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* available from the Open Source Initiative, see
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* http://www.opensource.org/licenses/bsd-license.php.
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*
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* 3) under the terms of the "GNU General Public License (GPL) Version 2" a
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* copy of which is available from the Open Source Initiative, see
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* http://www.opensource.org/licenses/gpl-license.php.
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*
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* Licensee has the right to choose one of the above licenses.
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*
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* Redistributions of source code must retain the above copyright
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* notice and one of the license notices.
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*
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* Redistributions in binary form must reproduce both the above copyright
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* notice, one of the license notices in the documentation
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* and/or other materials provided with the distribution.
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*
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*/
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#if !defined(IB_ADDR_H)
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#define IB_ADDR_H
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#include <linux/in.h>
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#include <linux/in6.h>
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#include <linux/netdevice.h>
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#include <linux/socket.h>
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#include <rdma/ib_verbs.h>
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struct rdma_dev_addr {
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unsigned char src_dev_addr[MAX_ADDR_LEN];
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unsigned char dst_dev_addr[MAX_ADDR_LEN];
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unsigned char broadcast[MAX_ADDR_LEN];
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enum ib_node_type dev_type;
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};
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/**
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* rdma_translate_ip - Translate a local IP address to an RDMA hardware
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* address.
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*/
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int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr);
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/**
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* rdma_resolve_ip - Resolve source and destination IP addresses to
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* RDMA hardware addresses.
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* @src_addr: An optional source address to use in the resolution. If a
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* source address is not provided, a usable address will be returned via
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* the callback.
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* @dst_addr: The destination address to resolve.
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* @addr: A reference to a data location that will receive the resolved
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* addresses. The data location must remain valid until the callback has
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* been invoked.
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* @timeout_ms: Amount of time to wait for the address resolution to complete.
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* @callback: Call invoked once address resolution has completed, timed out,
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* or been canceled. A status of 0 indicates success.
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* @context: User-specified context associated with the call.
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*/
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int rdma_resolve_ip(struct sockaddr *src_addr, struct sockaddr *dst_addr,
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struct rdma_dev_addr *addr, int timeout_ms,
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void (*callback)(int status, struct sockaddr *src_addr,
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struct rdma_dev_addr *addr, void *context),
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void *context);
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void rdma_addr_cancel(struct rdma_dev_addr *addr);
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static inline int ip_addr_size(struct sockaddr *addr)
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{
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return addr->sa_family == AF_INET6 ?
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sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in);
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}
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static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)
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{
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return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9];
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}
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static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey)
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{
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dev_addr->broadcast[8] = pkey >> 8;
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dev_addr->broadcast[9] = (unsigned char) pkey;
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}
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static inline union ib_gid *ib_addr_get_sgid(struct rdma_dev_addr *dev_addr)
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{
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return (union ib_gid *) (dev_addr->src_dev_addr + 4);
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}
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static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr,
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union ib_gid *gid)
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{
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memcpy(dev_addr->src_dev_addr + 4, gid, sizeof *gid);
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}
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static inline union ib_gid *ib_addr_get_dgid(struct rdma_dev_addr *dev_addr)
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{
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return (union ib_gid *) (dev_addr->dst_dev_addr + 4);
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}
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static inline void ib_addr_set_dgid(struct rdma_dev_addr *dev_addr,
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union ib_gid *gid)
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{
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memcpy(dev_addr->dst_dev_addr + 4, gid, sizeof *gid);
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}
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#endif /* IB_ADDR_H */
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