diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/rdma/ib_addr.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h new file mode 100644 index 00000000000..fcb5ba87dcc --- /dev/null +++ b/include/rdma/ib_addr.h @@ -0,0 +1,114 @@ +/* + * 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_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 ib_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. + * @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 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); + +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 union ib_gid *ib_addr_get_sgid(struct rdma_dev_addr *dev_addr) +{ + return (union ib_gid *) (dev_addr->src_dev_addr + 4); +} + +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 union ib_gid *ib_addr_get_dgid(struct rdma_dev_addr *dev_addr) +{ + return (union ib_gid *) (dev_addr->dst_dev_addr + 4); +} + +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); +} + +#endif /* IB_ADDR_H */ |