1 files changed, 81 insertions, 0 deletions
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h
new file mode 100644
index 000000000000..b3a36f7d79e5
--- /dev/null
+++ b/include/rdma/ib_umem.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2007 Cisco Systems.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef IB_UMEM_H
+#define IB_UMEM_H
+#include <linux/list.h>
+#include <linux/scatterlist.h>
+struct ib_ucontext;
+struct ib_umem {
+        struct ib_ucontext     *context;
+        size_t                  length;
+        int                     offset;
+        int                     page_size;
+        int                     writable;
+        struct list_head        chunk_list;
+        struct work_struct      work;
+        struct mm_struct       *mm;
+        unsigned long           diff;
+};
+struct ib_umem_chunk {
+        struct list_head        list;
+        int                     nents;
+        int                     nmap;
+        struct scatterlist      page_list[0];
+};
+#ifdef CONFIG_INFINIBAND_USER_MEM
+struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
+                            size_t size, int access);
+void ib_umem_release(struct ib_umem *umem);
+int ib_umem_page_count(struct ib_umem *umem);
+#else /* CONFIG_INFINIBAND_USER_MEM */
+#include <linux/err.h>
+static inline struct ib_umem *ib_umem_get(struct ib_ucontext *context,
+                                          unsigned long addr, size_t size,
+                                          int access) {
+        return ERR_PTR(-EINVAL);
+}
+static inline void ib_umem_release(struct ib_umem *umem) { }
+static inline int ib_umem_page_count(struct ib_umem *umem) { return 0; }
+#endif /* CONFIG_INFINIBAND_USER_MEM */
+#endif /* IB_UMEM_H */

diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h new file mode 100644 index 000000000000..b3a36f7d79e5 --- /dev/null +++ b/include/rdma/ib_umem.h
@@ -0,0 +1,81 @@
	1	/*
	2	* Copyright (c) 2007 Cisco Systems. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#ifndef IB_UMEM_H
	34	#define IB_UMEM_H
	35
	36	#include <linux/list.h>
	37	#include <linux/scatterlist.h>
	38
	39	struct ib_ucontext;
	40
	41	struct ib_umem {
	42	struct ib_ucontext *context;
	43	size_t length;
	44	int offset;
	45	int page_size;
	46	int writable;
	47	struct list_head chunk_list;
	48	struct work_struct work;
	49	struct mm_struct *mm;
	50	unsigned long diff;
	51	};
	52
	53	struct ib_umem_chunk {
	54	struct list_head list;
	55	int nents;
	56	int nmap;
	57	struct scatterlist page_list[0];
	58	};
	59
	60	#ifdef CONFIG_INFINIBAND_USER_MEM
	61
	62	struct ib_umem ib_umem_get(struct ib_ucontext context, unsigned long addr,
	63	size_t size, int access);
	64	void ib_umem_release(struct ib_umem *umem);
	65	int ib_umem_page_count(struct ib_umem *umem);
	66
	67	#else /* CONFIG_INFINIBAND_USER_MEM */
	68
	69	#include <linux/err.h>
	70
	71	static inline struct ib_umem ib_umem_get(struct ib_ucontext context,
	72	unsigned long addr, size_t size,
	73	int access) {
	74	return ERR_PTR(-EINVAL);
	75	}
	76	static inline void ib_umem_release(struct ib_umem *umem) { }
	77	static inline int ib_umem_page_count(struct ib_umem *umem) { return 0; }
	78
	79	#endif /* CONFIG_INFINIBAND_USER_MEM */
	80
	81	#endif /* IB_UMEM_H */