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authorSean Hefty <sean.hefty@intel.com>2006-06-17 20:37:28 -0700
committerRoland Dreier <rolandd@cisco.com>2006-06-17 20:37:28 -0700
commit7025fcd36bd62af2c6ca0ea3490c00b216c4d168 (patch)
treee2fda3944176fcafb24876680d6eb8b6be394fe6 /include/rdma/ib_addr.h
parent[NET]: Export ip_dev_find() (diff)
downloadlinux-dev-7025fcd36bd62af2c6ca0ea3490c00b216c4d168.tar.xz
linux-dev-7025fcd36bd62af2c6ca0ea3490c00b216c4d168.zip
IB: address translation to map IP toIB addresses (GIDs)
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>
Diffstat (limited to 'include/rdma/ib_addr.h')
-rw-r--r--include/rdma/ib_addr.h114
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 000000000000..fcb5ba87dcc5
--- /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 */