/*
 * netsniff-ng - the packet sniffing beast
 * Copyright 2009, 2010 Daniel Borkmann.
 * Subject to the GPL, version 2.
 */

#ifndef HASH_H
#define HASH_H

/* Hash table implementation from the GIT project. */
/* Copyright 2008 (C) Linus Torvalds, GPL version 2 */
/*
 * These are some simple generic hash table helper functions.
 * Not necessarily suitable for all users, but good for things
 * where you want to just keep track of a list of things, and
 * have a good hash to use on them.
 *
 * It keeps the hash table at roughly 50-75% free, so the memory
 * cost of the hash table itself is roughly
 *
 *	3 * 2*sizeof(void *) * nr_of_objects
 *
 * bytes.
 *
 * FIXME: on 64-bit architectures, we waste memory. It would be
 * good to have just 32-bit pointers, requiring a special allocator
 * for hashed entries or something.
 */

#include <stdio.h>

#define alloc_nr(x) (((x) + 16) * 3 / 2)
#define INSERT_HASH_PROTOS(ops, table)					\
	do {								\
		void **pos = insert_hash((ops).key, &(ops), &(table));	\
		/* We already had an entry there? */			\
		if (pos) {						\
			(ops).next = *pos;				\
			*pos = &(ops);					\
		}							\
	} while (0)

struct hash_table_entry {
	unsigned int hash;
	void *ptr;
};

struct hash_table {
	unsigned int size, nr;
	struct hash_table_entry *array;
};

extern void *lookup_hash(unsigned int hash, const struct hash_table *table);
extern void **insert_hash(unsigned int hash, void *ptr,
			  struct hash_table *table);
extern void *remove_hash(unsigned int hash, void *ptr, void *ptr_next,
			 struct hash_table *table);
extern int for_each_hash(const struct hash_table *table, int (*fn)(void *));
extern int for_each_hash_int(const struct hash_table *table,
			     int (*fn)(void *, int), int arg);
extern void free_hash(struct hash_table *table);

static inline void init_hash(struct hash_table *table)
{
	table->size = 0;
	table->nr = 0;
	table->array = NULL;
}

static inline unsigned char icase_hash(unsigned char c)
{
	return c & ~((c & 0x40) >> 1);
}

static inline unsigned int hash_name(const char *name, int namelen)
{
	unsigned int hash = 0x123;
	do {
		unsigned char c = *name++;
		c = icase_hash(c);
		hash = hash * 101 + c;
	} while (--namelen);
	return hash;
}

#endif
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<tr><th>author</th><td>Arnd Bergmann &lt;arnd@arndb.de&gt;</td><td class='right'>2016-06-20 18:08:22 +0200</td></tr>
<tr><th>committer</th><td>Gregory CLEMENT &lt;gregory.clement@free-electrons.com&gt;</td><td class='right'>2016-06-30 13:47:52 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=b44439e42912b9dcc510a0ff891809ea2cadc46b'>b44439e42912b9dcc510a0ff891809ea2cadc46b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=b44439e42912b9dcc510a0ff891809ea2cadc46b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=b44439e42912b9dcc510a0ff891809ea2cadc46b'>dfb41063b8c8328b6991959352cab52e957a1c4a</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=929e604efa3dc0522214e0dc18984be23993e9f0'>929e604efa3dc0522214e0dc18984be23993e9f0</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=b44439e42912b9dcc510a0ff891809ea2cadc46b&amp;id2=929e604efa3dc0522214e0dc18984be23993e9f0'>diff</a>)</td></tr></table>
<div class='commit-subject'>ARM: mvebu: compile pm code conditionally</div><div class='commit-msg'>A cleanup to include the headers correctly caused another build problem:

arch/arm/mach-mvebu/kirkwood-pm.c:70:13: error: redefinition of 'kirkwood_pm_init'
arch/arm/mach-mvebu/kirkwood-pm.h:23:20: note: previous definition of 'kirkwood_pm_init' was here

The underlying issue is that kirkwood-pm.o is not actually meant to be
used when CONFIG_PM is disabled, so we should also leave it out of the
Makefile.

The same seems to be true for the PM code in MACH_MVEBU_V7, and I'm
treating it the same way here.

Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Fixes: d705c1a66e15 ("ARM: Kirkwood: fix kirkwood_pm_init() declaration/type")
Signed-off-by: Gregory CLEMENT &lt;gregory.clement@free-electrons.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=b44439e42912b9dcc510a0ff891809ea2cadc46b'>Diffstat</a></div><table summary='diffstat' class='diffstat'>