1 files changed, 147 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/module/icp/include/sys/modhash.h b/sys/contrib/openzfs/module/icp/include/sys/modhash.h
new file mode 100644
index 000000000000..06b52ff02604
--- /dev/null
+++ b/sys/contrib/openzfs/module/icp/include/sys/modhash.h
@@ -0,0 +1,147 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_MODHASH_H
+#define	_SYS_MODHASH_H
+
+/*
+ * Generic hash implementation for the kernel.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/zfs_context.h>
+
+/*
+ * Opaque data types for storing keys and values
+ */
+typedef void *mod_hash_val_t;
+typedef void *mod_hash_key_t;
+
+/*
+ * Opaque data type for reservation
+ */
+typedef void *mod_hash_hndl_t;
+
+/*
+ * Opaque type for hash itself.
+ */
+struct mod_hash;
+typedef struct mod_hash mod_hash_t;
+
+/*
+ * String hash table
+ */
+mod_hash_t *mod_hash_create_strhash_nodtr(char *, size_t,
+	void (*)(mod_hash_val_t));
+mod_hash_t *mod_hash_create_strhash(char *, size_t, void (*)(mod_hash_val_t));
+void mod_hash_destroy_strhash(mod_hash_t *);
+int mod_hash_strkey_cmp(mod_hash_key_t, mod_hash_key_t);
+void mod_hash_strkey_dtor(mod_hash_key_t);
+void mod_hash_strval_dtor(mod_hash_val_t);
+uint_t mod_hash_bystr(void *, mod_hash_key_t);
+
+/*
+ * Pointer hash table
+ */
+mod_hash_t *mod_hash_create_ptrhash(char *, size_t, void (*)(mod_hash_val_t),
+	size_t);
+void mod_hash_destroy_ptrhash(mod_hash_t *);
+int mod_hash_ptrkey_cmp(mod_hash_key_t, mod_hash_key_t);
+uint_t mod_hash_byptr(void *, mod_hash_key_t);
+
+/*
+ * ID hash table
+ */
+mod_hash_t *mod_hash_create_idhash(char *, size_t, void (*)(mod_hash_val_t));
+void mod_hash_destroy_idhash(mod_hash_t *);
+int mod_hash_idkey_cmp(mod_hash_key_t, mod_hash_key_t);
+uint_t mod_hash_byid(void *, mod_hash_key_t);
+uint_t mod_hash_iddata_gen(size_t);
+
+/*
+ * Hash management functions
+ */
+mod_hash_t *mod_hash_create_extended(char *, size_t, void (*)(mod_hash_key_t),
+	void (*)(mod_hash_val_t), uint_t (*)(void *, mod_hash_key_t), void *,
+	int (*)(mod_hash_key_t, mod_hash_key_t), int);
+
+void mod_hash_destroy_hash(mod_hash_t *);
+void mod_hash_clear(mod_hash_t *);
+
+/*
+ * Null key and value destructors
+ */
+void mod_hash_null_keydtor(mod_hash_key_t);
+void mod_hash_null_valdtor(mod_hash_val_t);
+
+/*
+ * Basic hash operations
+ */
+
+/*
+ * Error codes for insert, remove, find, destroy.
+ */
+#define	MH_ERR_NOMEM -1
+#define	MH_ERR_DUPLICATE -2
+#define	MH_ERR_NOTFOUND -3
+
+/*
+ * Return codes for hash walkers
+ */
+#define	MH_WALK_CONTINUE 0
+#define	MH_WALK_TERMINATE 1
+
+/*
+ * Basic hash operations
+ */
+int mod_hash_insert(mod_hash_t *, mod_hash_key_t, mod_hash_val_t);
+int mod_hash_replace(mod_hash_t *, mod_hash_key_t, mod_hash_val_t);
+int mod_hash_remove(mod_hash_t *, mod_hash_key_t, mod_hash_val_t *);
+int mod_hash_destroy(mod_hash_t *, mod_hash_key_t);
+int mod_hash_find(mod_hash_t *, mod_hash_key_t, mod_hash_val_t *);
+int mod_hash_find_cb(mod_hash_t *, mod_hash_key_t, mod_hash_val_t *,
+	void (*)(mod_hash_key_t, mod_hash_val_t));
+int mod_hash_find_cb_rval(mod_hash_t *, mod_hash_key_t, mod_hash_val_t *,
+	int (*)(mod_hash_key_t, mod_hash_val_t), int *);
+void mod_hash_walk(mod_hash_t *,
+	uint_t (*)(mod_hash_key_t, mod_hash_val_t *, void *), void *);
+
+/*
+ * Reserving hash operations
+ */
+int mod_hash_reserve(mod_hash_t *, mod_hash_hndl_t *);
+int mod_hash_reserve_nosleep(mod_hash_t *, mod_hash_hndl_t *);
+void mod_hash_cancel(mod_hash_t *, mod_hash_hndl_t *);
+int mod_hash_insert_reserve(mod_hash_t *, mod_hash_key_t, mod_hash_val_t,
+	mod_hash_hndl_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_MODHASH_H */