Reorganized kernel/ subdir

The kernel/ subdirectory is reorganized to follow the kernel directory
structure.

1 files changed, 0 insertions, 587 deletions

diff --git a/kernel/ip_set_bitmap_ip.c b/kernel/ip_set_bitmap_ip.c
deleted file mode 100644
index bca9699..0000000
--- a/kernel/ip_set_bitmap_ip.c
+++ /dev/null
@@ -1,587 +0,0 @@
-/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
- *                         Patrick Schaaf <bof@bof.de>
- * Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/* Kernel module implementing an IP set type: the bitmap:ip type */
-
-#include <linux/module.h>
-#include <linux/ip.h>
-#include <linux/skbuff.h>
-#include <linux/errno.h>
-#include <linux/bitops.h>
-#include <linux/spinlock.h>
-#include <linux/netlink.h>
-#include <linux/jiffies.h>
-#include <linux/timer.h>
-#include <net/netlink.h>
-#include <net/tcp.h>
-
-#include <linux/netfilter/ipset/pfxlen.h>
-#include <linux/netfilter/ipset/ip_set.h>
-#include <linux/netfilter/ipset/ip_set_bitmap.h>
-#define IP_SET_BITMAP_TIMEOUT
-#include <linux/netfilter/ipset/ip_set_timeout.h>
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
-MODULE_DESCRIPTION("bitmap:ip type of IP sets");
-MODULE_ALIAS("ip_set_bitmap:ip");
-
-/* Type structure */
-struct bitmap_ip {
-	void *members;		/* the set members */
-	u32 first_ip;		/* host byte order, included in range */
-	u32 last_ip;		/* host byte order, included in range */
-	u32 elements;		/* number of max elements in the set */
-	u32 hosts;		/* number of hosts in a subnet */
-	size_t memsize;		/* members size */
-	u8 netmask;		/* subnet netmask */
-	u32 timeout;		/* timeout parameter */
-	struct timer_list gc;	/* garbage collection */
-};
-
-/* Base variant */
-
-static inline u32
-ip_to_id(const struct bitmap_ip *m, u32 ip)
-{
-	return ((ip & ip_set_hostmask(m->netmask)) - m->first_ip)/m->hosts;
-}
-
-static int
-bitmap_ip_test(struct ip_set *set, void *value, u32 timeout)
-{
-	const struct bitmap_ip *map = set->data;
-	u16 id = *(u16 *)value;
-
-	return !!test_bit(id, map->members);
-}
-
-static int
-bitmap_ip_add(struct ip_set *set, void *value, u32 timeout)
-{
-	struct bitmap_ip *map = set->data;
-	u16 id = *(u16 *)value;
-
-	if (test_and_set_bit(id, map->members))
-		return -IPSET_ERR_EXIST;
-
-	return 0;
-}
-
-static int
-bitmap_ip_del(struct ip_set *set, void *value, u32 timeout)
-{
-	struct bitmap_ip *map = set->data;
-	u16 id = *(u16 *)value;
-
-	if (!test_and_clear_bit(id, map->members))
-		return -IPSET_ERR_EXIST;
-
-	return 0;
-}
-
-static int
-bitmap_ip_list(const struct ip_set *set,
-	       struct sk_buff *skb, struct netlink_callback *cb)
-{
-	const struct bitmap_ip *map = set->data;
-	struct nlattr *atd, *nested;
-	u32 id, first = cb->args[2];
-
-	atd = ipset_nest_start(skb, IPSET_ATTR_ADT);
-	if (!atd)
-		return -EMSGSIZE;
-	for (; cb->args[2] < map->elements; cb->args[2]++) {
-		id = cb->args[2];
-		if (!test_bit(id, map->members))
-			continue;
-		nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
-		if (!nested) {
-			if (id == first) {
-				nla_nest_cancel(skb, atd);
-				return -EMSGSIZE;
-			} else
-				goto nla_put_failure;
-		}
-		NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP,
-				htonl(map->first_ip + id * map->hosts));
-		ipset_nest_end(skb, nested);
-	}
-	ipset_nest_end(skb, atd);
-	/* Set listing finished */
-	cb->args[2] = 0;
-	return 0;
-
-nla_put_failure:
-	nla_nest_cancel(skb, nested);
-	ipset_nest_end(skb, atd);
-	if (unlikely(id == first)) {
-		cb->args[2] = 0;
-		return -EMSGSIZE;
-	}
-	return 0;
-}
-
-/* Timeout variant */
-
-static int
-bitmap_ip_ttest(struct ip_set *set, void *value, u32 timeout)
-{
-	const struct bitmap_ip *map = set->data;
-	const unsigned long *members = map->members;
-	u16 id = *(u16 *)value;
-
-	return ip_set_timeout_test(members[id]);
-}
-
-static int
-bitmap_ip_tadd(struct ip_set *set, void *value, u32 timeout)
-{
-	struct bitmap_ip *map = set->data;
-	unsigned long *members = map->members;
-	u16 id = *(u16 *)value;
-
-	if (ip_set_timeout_test(members[id]))
-		return -IPSET_ERR_EXIST;
-
-	members[id] = ip_set_timeout_set(timeout);
-
-	return 0;
-}
-
-static int
-bitmap_ip_tdel(struct ip_set *set, void *value, u32 timeout)
-{
-	struct bitmap_ip *map = set->data;
-	unsigned long *members = map->members;
-	u16 id = *(u16 *)value;
-	int ret = -IPSET_ERR_EXIST;
-
-	if (ip_set_timeout_test(members[id]))
-		ret = 0;
-
-	members[id] = IPSET_ELEM_UNSET;
-	return ret;
-}
-
-static int
-bitmap_ip_tlist(const struct ip_set *set,
-		struct sk_buff *skb, struct netlink_callback *cb)
-{
-	const struct bitmap_ip *map = set->data;
-	struct nlattr *adt, *nested;
-	u32 id, first = cb->args[2];
-	const unsigned long *members = map->members;
-
-	adt = ipset_nest_start(skb, IPSET_ATTR_ADT);
-	if (!adt)
-		return -EMSGSIZE;
-	for (; cb->args[2] < map->elements; cb->args[2]++) {
-		id = cb->args[2];
-		if (!ip_set_timeout_test(members[id]))
-			continue;
-		nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
-		if (!nested) {
-			if (id == first) {
-				nla_nest_cancel(skb, adt);
-				return -EMSGSIZE;
-			} else
-				goto nla_put_failure;
-		}
-		NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP,
-				htonl(map->first_ip + id * map->hosts));
-		NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT,
-			      htonl(ip_set_timeout_get(members[id])));
-		ipset_nest_end(skb, nested);
-	}
-	ipset_nest_end(skb, adt);
-
-	/* Set listing finished */
-	cb->args[2] = 0;
-
-	return 0;
-
-nla_put_failure:
-	nla_nest_cancel(skb, nested);
-	ipset_nest_end(skb, adt);
-	if (unlikely(id == first)) {
-		cb->args[2] = 0;
-		return -EMSGSIZE;
-	}
-	return 0;
-}
-
-static int
-bitmap_ip_kadt(struct ip_set *set, const struct sk_buff *skb,
-	       enum ipset_adt adt, u8 pf, u8 dim, u8 flags)
-{
-	struct bitmap_ip *map = set->data;
-	ipset_adtfn adtfn = set->variant->adt[adt];
-	u32 ip;
-
-	ip = ntohl(ip4addr(skb, flags & IPSET_DIM_ONE_SRC));
-	if (ip < map->first_ip || ip > map->last_ip)
-		return -IPSET_ERR_BITMAP_RANGE;
-
-	ip = ip_to_id(map, ip);
-
-	return adtfn(set, &ip, map->timeout);
-}
-
-static int
-bitmap_ip_uadt(struct ip_set *set, struct nlattr *tb[],
-	       enum ipset_adt adt, u32 *lineno, u32 flags)
-{
-	struct bitmap_ip *map = set->data;
-	ipset_adtfn adtfn = set->variant->adt[adt];
-	u32 timeout = map->timeout;
-	u32 ip, ip_to, id;
-	int ret = 0;
-
-	if (unlikely(!tb[IPSET_ATTR_IP] ||
-		     !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
-		return -IPSET_ERR_PROTOCOL;
-
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
-	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
-	if (ret)
-		return ret;
-
-	if (ip < map->first_ip || ip > map->last_ip)
-		return -IPSET_ERR_BITMAP_RANGE;
-
-	if (tb[IPSET_ATTR_TIMEOUT]) {
-		if (!with_timeout(map->timeout))
-			return -IPSET_ERR_TIMEOUT;
-		timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
-	}
-
-	if (adt == IPSET_TEST) {
-		id = ip_to_id(map, ip);
-		return adtfn(set, &id, timeout);
-	}
-
-	if (tb[IPSET_ATTR_IP_TO]) {
-		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
-		if (ret)
-			return ret;
-		if (ip > ip_to) {
-			swap(ip, ip_to);
-			if (ip < map->first_ip)
-				return -IPSET_ERR_BITMAP_RANGE;
-		}
-	} else if (tb[IPSET_ATTR_CIDR]) {
-		u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
-
-		if (cidr > 32)
-			return -IPSET_ERR_INVALID_CIDR;
-		ip &= ip_set_hostmask(cidr);
-		ip_to = ip | ~ip_set_hostmask(cidr);
-	} else
-		ip_to = ip;
-
-	if (ip_to > map->last_ip)
-		return -IPSET_ERR_BITMAP_RANGE;
-
-	for (; !before(ip_to, ip); ip += map->hosts) {
-		id = ip_to_id(map, ip);
-		ret = adtfn(set, &id, timeout);;
-
-		if (ret && !ip_set_eexist(ret, flags))
-			return ret;
-		else
-			ret = 0;
-	}
-	return ret;
-}
-
-static void
-bitmap_ip_destroy(struct ip_set *set)
-{
-	struct bitmap_ip *map = set->data;
-
-	if (with_timeout(map->timeout))
-		del_timer_sync(&map->gc);
-
-	ip_set_free(map->members);
-	kfree(map);
-
-	set->data = NULL;
-}
-
-static void
-bitmap_ip_flush(struct ip_set *set)
-{
-	struct bitmap_ip *map = set->data;
-
-	memset(map->members, 0, map->memsize);
-}
-
-static int
-bitmap_ip_head(struct ip_set *set, struct sk_buff *skb)
-{
-	const struct bitmap_ip *map = set->data;
-	struct nlattr *nested;
-
-	nested = ipset_nest_start(skb, IPSET_ATTR_DATA);
-	if (!nested)
-		goto nla_put_failure;
-	NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP, htonl(map->first_ip));
-	NLA_PUT_IPADDR4(skb, IPSET_ATTR_IP_TO, htonl(map->last_ip));
-	if (map->netmask != 32)
-		NLA_PUT_U8(skb, IPSET_ATTR_NETMASK, map->netmask);
-	NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES,
-		      htonl(atomic_read(&set->ref) - 1));
-	NLA_PUT_NET32(skb, IPSET_ATTR_MEMSIZE,
-		      htonl(sizeof(*map) + map->memsize));
-	if (with_timeout(map->timeout))
-		NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout));
-	ipset_nest_end(skb, nested);
-
-	return 0;
-nla_put_failure:
-	return -EMSGSIZE;
-}
-
-static bool
-bitmap_ip_same_set(const struct ip_set *a, const struct ip_set *b)
-{
-	const struct bitmap_ip *x = a->data;
-	const struct bitmap_ip *y = b->data;
-
-	return x->first_ip == y->first_ip &&
-	       x->last_ip == y->last_ip &&
-	       x->netmask == y->netmask &&
-	       x->timeout == y->timeout;
-}
-
-static const struct ip_set_type_variant bitmap_ip = {
-	.kadt	= bitmap_ip_kadt,
-	.uadt	= bitmap_ip_uadt,
-	.adt	= {
-		[IPSET_ADD] = bitmap_ip_add,
-		[IPSET_DEL] = bitmap_ip_del,
-		[IPSET_TEST] = bitmap_ip_test,
-	},
-	.destroy = bitmap_ip_destroy,
-	.flush	= bitmap_ip_flush,
-	.head	= bitmap_ip_head,
-	.list	= bitmap_ip_list,
-	.same_set = bitmap_ip_same_set,
-};
-
-static const struct ip_set_type_variant bitmap_tip = {
-	.kadt	= bitmap_ip_kadt,
-	.uadt	= bitmap_ip_uadt,
-	.adt	= {
-		[IPSET_ADD] = bitmap_ip_tadd,
-		[IPSET_DEL] = bitmap_ip_tdel,
-		[IPSET_TEST] = bitmap_ip_ttest,
-	},
-	.destroy = bitmap_ip_destroy,
-	.flush	= bitmap_ip_flush,
-	.head	= bitmap_ip_head,
-	.list	= bitmap_ip_tlist,
-	.same_set = bitmap_ip_same_set,
-};
-
-static void
-bitmap_ip_gc(unsigned long ul_set)
-{
-	struct ip_set *set = (struct ip_set *) ul_set;
-	struct bitmap_ip *map = set->data;
-	unsigned long *table = map->members;
-	u32 id;
-
-	/* We run parallel with other readers (test element)
-	 * but adding/deleting new entries is locked out */
-	read_lock_bh(&set->lock);
-	for (id = 0; id < map->elements; id++)
-		if (ip_set_timeout_expired(table[id]))
-			table[id] = IPSET_ELEM_UNSET;
-	read_unlock_bh(&set->lock);
-
-	map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
-	add_timer(&map->gc);
-}
-
-static void
-bitmap_ip_gc_init(struct ip_set *set)
-{
-	struct bitmap_ip *map = set->data;
-
-	init_timer(&map->gc);
-	map->gc.data = (unsigned long) set;
-	map->gc.function = bitmap_ip_gc;
-	map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ;
-	add_timer(&map->gc);
-}
-
-/* Create bitmap:ip type of sets */
-
-static bool
-init_map_ip(struct ip_set *set, struct bitmap_ip *map,
-	    u32 first_ip, u32 last_ip,
-	    u32 elements, u32 hosts, u8 netmask)
-{
-	map->members = ip_set_alloc(map->memsize);
-	if (!map->members)
-		return false;
-	map->first_ip = first_ip;
-	map->last_ip = last_ip;
-	map->elements = elements;
-	map->hosts = hosts;
-	map->netmask = netmask;
-	map->timeout = IPSET_NO_TIMEOUT;
-
-	set->data = map;
-	set->family = AF_INET;
-
-	return true;
-}
-
-static int
-bitmap_ip_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
-{
-	struct bitmap_ip *map;
-	u32 first_ip, last_ip, hosts, elements;
-	u8 netmask = 32;
-	int ret;
-
-	if (unlikely(!tb[IPSET_ATTR_IP] ||
-		     !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT)))
-		return -IPSET_ERR_PROTOCOL;
-
-	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &first_ip);
-	if (ret)
-		return ret;
-
-	if (tb[IPSET_ATTR_IP_TO]) {
-		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &last_ip);
-		if (ret)
-			return ret;
-		if (first_ip > last_ip) {
-			u32 tmp = first_ip;
-
-			first_ip = last_ip;
-			last_ip = tmp;
-		}
-	} else if (tb[IPSET_ATTR_CIDR]) {
-		u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
-
-		if (cidr >= 32)
-			return -IPSET_ERR_INVALID_CIDR;
-		last_ip = first_ip | ~ip_set_hostmask(cidr);
-	} else
-		return -IPSET_ERR_PROTOCOL;
-
-	if (tb[IPSET_ATTR_NETMASK]) {
-		netmask = nla_get_u8(tb[IPSET_ATTR_NETMASK]);
-
-		if (netmask > 32)
-			return -IPSET_ERR_INVALID_NETMASK;
-
-		first_ip &= ip_set_hostmask(netmask);
-		last_ip |= ~ip_set_hostmask(netmask);
-	}
-
-	if (netmask == 32) {
-		hosts = 1;
-		elements = last_ip - first_ip + 1;
-	} else {
-		u8 mask_bits;
-		u32 mask;
-
-		mask = range_to_mask(first_ip, last_ip, &mask_bits);
-
-		if ((!mask && (first_ip || last_ip != 0xFFFFFFFF)) ||
-		    netmask <= mask_bits)
-			return -IPSET_ERR_BITMAP_RANGE;
-
-		pr_debug("mask_bits %u, netmask %u\n", mask_bits, netmask);
-		hosts = 2 << (32 - netmask - 1);
-		elements = 2 << (netmask - mask_bits - 1);
-	}
-	if (elements > IPSET_BITMAP_MAX_RANGE + 1)
-		return -IPSET_ERR_BITMAP_RANGE_SIZE;
-
-	pr_debug("hosts %u, elements %u\n", hosts, elements);
-
-	map = kzalloc(sizeof(*map), GFP_KERNEL);
-	if (!map)
-		return -ENOMEM;
-
-	if (tb[IPSET_ATTR_TIMEOUT]) {
-		map->memsize = elements * sizeof(unsigned long);
-
-		if (!init_map_ip(set, map, first_ip, last_ip,
-				 elements, hosts, netmask)) {
-			kfree(map);
-			return -ENOMEM;
-		}
-
-		map->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
-		set->variant = &bitmap_tip;
-
-		bitmap_ip_gc_init(set);
-	} else {
-		map->memsize = bitmap_bytes(0, elements - 1);
-
-		if (!init_map_ip(set, map, first_ip, last_ip,
-				 elements, hosts, netmask)) {
-			kfree(map);
-			return -ENOMEM;
-		}
-
-		set->variant = &bitmap_ip;
-	}
-	return 0;
-}
-
-static struct ip_set_type bitmap_ip_type __read_mostly = {
-	.name		= "bitmap:ip",
-	.protocol	= IPSET_PROTOCOL,
-	.features	= IPSET_TYPE_IP,
-	.dimension	= IPSET_DIM_ONE,
-	.family		= AF_INET,
-	.revision	= 0,
-	.create		= bitmap_ip_create,
-	.create_policy	= {
-		[IPSET_ATTR_IP]		= { .type = NLA_NESTED },
-		[IPSET_ATTR_IP_TO]	= { .type = NLA_NESTED },
-		[IPSET_ATTR_CIDR]	= { .type = NLA_U8 },
-		[IPSET_ATTR_NETMASK]	= { .type = NLA_U8  },
-		[IPSET_ATTR_TIMEOUT]	= { .type = NLA_U32 },
-	},
-	.adt_policy	= {
-		[IPSET_ATTR_IP]		= { .type = NLA_NESTED },
-		[IPSET_ATTR_IP_TO]	= { .type = NLA_NESTED },
-		[IPSET_ATTR_CIDR]	= { .type = NLA_U8 },
-		[IPSET_ATTR_TIMEOUT]	= { .type = NLA_U32 },
-		[IPSET_ATTR_LINENO]	= { .type = NLA_U32 },
-	},
-	.me		= THIS_MODULE,
-};
-
-static int __init
-bitmap_ip_init(void)
-{
-	return ip_set_type_register(&bitmap_ip_type);
-}
-
-static void __exit
-bitmap_ip_fini(void)
-{
-	ip_set_type_unregister(&bitmap_ip_type);
-}
-
-module_init(bitmap_ip_init);
-module_exit(bitmap_ip_fini);