Commit df0933dc authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller

[NETFILTER]: kill listhelp.h

Kill listhelp.h and use the list.h functions instead.
Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1bf38a36
......@@ -138,10 +138,6 @@ struct xt_counters_info
#include <linux/netdevice.h>
#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/listhelp.h>
#ifdef CONFIG_COMPAT
#define COMPAT_TO_USER 1
#define COMPAT_FROM_USER -1
......
#ifndef _LISTHELP_H
#define _LISTHELP_H
#include <linux/list.h>
/* Header to do more comprehensive job than linux/list.h; assume list
is first entry in structure. */
/* Return pointer to first true entry, if any, or NULL. A macro
required to allow inlining of cmpfn. */
#define LIST_FIND(head, cmpfn, type, args...) \
({ \
const struct list_head *__i, *__j = NULL; \
\
ASSERT_READ_LOCK(head); \
list_for_each(__i, (head)) \
if (cmpfn((const type)__i , ## args)) { \
__j = __i; \
break; \
} \
(type)__j; \
})
#define LIST_FIND_W(head, cmpfn, type, args...) \
({ \
const struct list_head *__i, *__j = NULL; \
\
ASSERT_WRITE_LOCK(head); \
list_for_each(__i, (head)) \
if (cmpfn((type)__i , ## args)) { \
__j = __i; \
break; \
} \
(type)__j; \
})
/* Just like LIST_FIND but we search backwards */
#define LIST_FIND_B(head, cmpfn, type, args...) \
({ \
const struct list_head *__i, *__j = NULL; \
\
ASSERT_READ_LOCK(head); \
list_for_each_prev(__i, (head)) \
if (cmpfn((const type)__i , ## args)) { \
__j = __i; \
break; \
} \
(type)__j; \
})
static inline int
__list_cmp_same(const void *p1, const void *p2) { return p1 == p2; }
/* Is this entry in the list? */
static inline int
list_inlist(struct list_head *head, const void *entry)
{
return LIST_FIND(head, __list_cmp_same, void *, entry) != NULL;
}
/* Delete from list. */
#ifdef CONFIG_NETFILTER_DEBUG
#define LIST_DELETE(head, oldentry) \
do { \
ASSERT_WRITE_LOCK(head); \
if (!list_inlist(head, oldentry)) \
printk("LIST_DELETE: %s:%u `%s'(%p) not in %s.\n", \
__FILE__, __LINE__, #oldentry, oldentry, #head); \
else list_del((struct list_head *)oldentry); \
} while(0)
#else
#define LIST_DELETE(head, oldentry) list_del((struct list_head *)oldentry)
#endif
/* Append. */
static inline void
list_append(struct list_head *head, void *new)
{
ASSERT_WRITE_LOCK(head);
list_add((new), (head)->prev);
}
/* Prepend. */
static inline void
list_prepend(struct list_head *head, void *new)
{
ASSERT_WRITE_LOCK(head);
list_add(new, head);
}
/* Insert according to ordering function; insert before first true. */
#define LIST_INSERT(head, new, cmpfn) \
do { \
struct list_head *__i; \
ASSERT_WRITE_LOCK(head); \
list_for_each(__i, (head)) \
if ((new), (typeof (new))__i) \
break; \
list_add((struct list_head *)(new), __i->prev); \
} while(0)
/* If the field after the list_head is a nul-terminated string, you
can use these functions. */
static inline int __list_cmp_name(const void *i, const char *name)
{
return strcmp(name, i+sizeof(struct list_head)) == 0;
}
/* Returns false if same name already in list, otherwise does insert. */
static inline int
list_named_insert(struct list_head *head, void *new)
{
if (LIST_FIND(head, __list_cmp_name, void *,
new + sizeof(struct list_head)))
return 0;
list_prepend(head, new);
return 1;
}
/* Find this named element in the list. */
#define list_named_find(head, name) \
LIST_FIND(head, __list_cmp_name, void *, name)
#endif /*_LISTHELP_H*/
......@@ -24,6 +24,7 @@
#include <linux/vmalloc.h>
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <linux/smp.h>
#include <linux/cpumask.h>
......@@ -31,12 +32,6 @@
/* needed for logical [in,out]-dev filtering */
#include "../br_private.h"
/* list_named_find */
#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/listhelp.h>
#include <linux/mutex.h>
#define BUGPRINT(format, args...) printk("kernel msg: ebtables bug: please "\
"report to author: "format, ## args)
/* #define BUGPRINT(format, args...) */
......@@ -278,18 +273,22 @@ static inline void *
find_inlist_lock_noload(struct list_head *head, const char *name, int *error,
struct mutex *mutex)
{
void *ret;
struct {
struct list_head list;
char name[EBT_FUNCTION_MAXNAMELEN];
} *e;
*error = mutex_lock_interruptible(mutex);
if (*error != 0)
return NULL;
ret = list_named_find(head, name);
if (!ret) {
*error = -ENOENT;
mutex_unlock(mutex);
list_for_each_entry(e, head, list) {
if (strcmp(e->name, name) == 0)
return e;
}
return ret;
*error = -ENOENT;
mutex_unlock(mutex);
return NULL;
}
#ifndef CONFIG_KMOD
......@@ -1043,15 +1042,19 @@ static int do_replace(void __user *user, unsigned int len)
int ebt_register_target(struct ebt_target *target)
{
struct ebt_target *t;
int ret;
ret = mutex_lock_interruptible(&ebt_mutex);
if (ret != 0)
return ret;
if (!list_named_insert(&ebt_targets, target)) {
mutex_unlock(&ebt_mutex);
return -EEXIST;
list_for_each_entry(t, &ebt_targets, list) {
if (strcmp(t->name, target->name) == 0) {
mutex_unlock(&ebt_mutex);
return -EEXIST;
}
}
list_add(&target->list, &ebt_targets);
mutex_unlock(&ebt_mutex);
return 0;
......@@ -1060,21 +1063,25 @@ int ebt_register_target(struct ebt_target *target)
void ebt_unregister_target(struct ebt_target *target)
{
mutex_lock(&ebt_mutex);
LIST_DELETE(&ebt_targets, target);
list_del(&target->list);
mutex_unlock(&ebt_mutex);
}
int ebt_register_match(struct ebt_match *match)
{
struct ebt_match *m;
int ret;
ret = mutex_lock_interruptible(&ebt_mutex);
if (ret != 0)
return ret;
if (!list_named_insert(&ebt_matches, match)) {
mutex_unlock(&ebt_mutex);
return -EEXIST;
list_for_each_entry(m, &ebt_matches, list) {
if (strcmp(m->name, match->name) == 0) {
mutex_unlock(&ebt_mutex);
return -EEXIST;
}
}
list_add(&match->list, &ebt_matches);
mutex_unlock(&ebt_mutex);
return 0;
......@@ -1083,21 +1090,25 @@ int ebt_register_match(struct ebt_match *match)
void ebt_unregister_match(struct ebt_match *match)
{
mutex_lock(&ebt_mutex);
LIST_DELETE(&ebt_matches, match);
list_del(&match->list);
mutex_unlock(&ebt_mutex);
}
int ebt_register_watcher(struct ebt_watcher *watcher)
{
struct ebt_watcher *w;
int ret;
ret = mutex_lock_interruptible(&ebt_mutex);
if (ret != 0)
return ret;
if (!list_named_insert(&ebt_watchers, watcher)) {
mutex_unlock(&ebt_mutex);
return -EEXIST;
list_for_each_entry(w, &ebt_watchers, list) {
if (strcmp(w->name, watcher->name) == 0) {
mutex_unlock(&ebt_mutex);
return -EEXIST;
}
}
list_add(&watcher->list, &ebt_watchers);
mutex_unlock(&ebt_mutex);
return 0;
......@@ -1106,13 +1117,14 @@ int ebt_register_watcher(struct ebt_watcher *watcher)
void ebt_unregister_watcher(struct ebt_watcher *watcher)
{
mutex_lock(&ebt_mutex);
LIST_DELETE(&ebt_watchers, watcher);
list_del(&watcher->list);
mutex_unlock(&ebt_mutex);
}
int ebt_register_table(struct ebt_table *table)
{
struct ebt_table_info *newinfo;
struct ebt_table *t;
int ret, i, countersize;
if (!table || !table->table ||!table->table->entries ||
......@@ -1158,10 +1170,12 @@ int ebt_register_table(struct ebt_table *table)
if (ret != 0)
goto free_chainstack;
if (list_named_find(&ebt_tables, table->name)) {
ret = -EEXIST;
BUGPRINT("Table name already exists\n");
goto free_unlock;
list_for_each_entry(t, &ebt_tables, list) {
if (strcmp(t->name, table->name) == 0) {
ret = -EEXIST;
BUGPRINT("Table name already exists\n");
goto free_unlock;
}
}
/* Hold a reference count if the chains aren't empty */
......@@ -1169,7 +1183,7 @@ int ebt_register_table(struct ebt_table *table)
ret = -ENOENT;
goto free_unlock;
}
list_prepend(&ebt_tables, table);
list_add(&table->list, &ebt_tables);
mutex_unlock(&ebt_mutex);
return 0;
free_unlock:
......@@ -1195,7 +1209,7 @@ void ebt_unregister_table(struct ebt_table *table)
return;
}
mutex_lock(&ebt_mutex);
LIST_DELETE(&ebt_tables, table);
list_del(&table->list);
mutex_unlock(&ebt_mutex);
vfree(table->private->entries);
if (table->private->chainstack) {
......@@ -1465,7 +1479,7 @@ static int __init ebtables_init(void)
int ret;
mutex_lock(&ebt_mutex);
list_named_insert(&ebt_targets, &ebt_standard_target);
list_add(&ebt_standard_target.list, &ebt_targets);
mutex_unlock(&ebt_mutex);
if ((ret = nf_register_sockopt(&ebt_sockopts)) < 0)
return ret;
......
......@@ -56,8 +56,6 @@ do { \
#define ARP_NF_ASSERT(x)
#endif
#include <linux/netfilter_ipv4/listhelp.h>
static inline int arp_devaddr_compare(const struct arpt_devaddr_info *ap,
char *hdr_addr, int len)
{
......
This diff is collapsed.
......@@ -37,7 +37,6 @@ static DEFINE_RWLOCK(ip_ct_gre_lock);
#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/listhelp.h>
#include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
#include <linux/netfilter_ipv4/ip_conntrack_core.h>
......@@ -82,10 +81,12 @@ static __be16 gre_keymap_lookup(struct ip_conntrack_tuple *t)
__be16 key = 0;
read_lock_bh(&ip_ct_gre_lock);
km = LIST_FIND(&gre_keymap_list, gre_key_cmpfn,
struct ip_ct_gre_keymap *, t);
if (km)
key = km->tuple.src.u.gre.key;
list_for_each_entry(km, &gre_keymap_list, list) {
if (gre_key_cmpfn(km, t)) {
key = km->tuple.src.u.gre.key;
break;
}
}
read_unlock_bh(&ip_ct_gre_lock);
DEBUGP("lookup src key 0x%x up key for ", key);
......@@ -99,7 +100,7 @@ int
ip_ct_gre_keymap_add(struct ip_conntrack *ct,
struct ip_conntrack_tuple *t, int reply)
{
struct ip_ct_gre_keymap **exist_km, *km, *old;
struct ip_ct_gre_keymap **exist_km, *km;
if (!ct->helper || strcmp(ct->helper->name, "pptp")) {
DEBUGP("refusing to add GRE keymap to non-pptp session\n");
......@@ -113,13 +114,10 @@ ip_ct_gre_keymap_add(struct ip_conntrack *ct,
if (*exist_km) {
/* check whether it's a retransmission */
old = LIST_FIND(&gre_keymap_list, gre_key_cmpfn,
struct ip_ct_gre_keymap *, t);
if (old == *exist_km) {
DEBUGP("retransmission\n");
return 0;
list_for_each_entry(km, &gre_keymap_list, list) {
if (gre_key_cmpfn(km, t) && km == *exist_km)
return 0;
}
DEBUGP("trying to override keymap_%s for ct %p\n",
reply? "reply":"orig", ct);
return -EEXIST;
......@@ -136,7 +134,7 @@ ip_ct_gre_keymap_add(struct ip_conntrack *ct,
DUMP_TUPLE_GRE(&km->tuple);
write_lock_bh(&ip_ct_gre_lock);
list_append(&gre_keymap_list, km);
list_add_tail(&km->list, &gre_keymap_list);
write_unlock_bh(&ip_ct_gre_lock);
return 0;
......
......@@ -35,7 +35,6 @@
#include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
#include <linux/netfilter_ipv4/ip_conntrack_core.h>
#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
#include <linux/netfilter_ipv4/listhelp.h>
#if 0
#define DEBUGP printk
......
......@@ -22,9 +22,6 @@
#include <linux/udp.h>
#include <linux/jhash.h>
#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/ip_conntrack.h>
#include <linux/netfilter_ipv4/ip_conntrack_core.h>
#include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
......@@ -33,7 +30,6 @@
#include <linux/netfilter_ipv4/ip_nat_core.h>
#include <linux/netfilter_ipv4/ip_nat_helper.h>
#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
#include <linux/netfilter_ipv4/listhelp.h>
#if 0
#define DEBUGP printk
......
......@@ -27,16 +27,12 @@
#include <net/tcp.h>
#include <net/udp.h>
#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/ip_conntrack.h>
#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
#include <linux/netfilter_ipv4/ip_nat.h>
#include <linux/netfilter_ipv4/ip_nat_protocol.h>
#include <linux/netfilter_ipv4/ip_nat_core.h>
#include <linux/netfilter_ipv4/ip_nat_helper.h>
#include <linux/netfilter_ipv4/listhelp.h>
#if 0
#define DEBUGP printk
......
......@@ -19,14 +19,10 @@
#include <net/route.h>
#include <linux/bitops.h>
#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv4/ip_nat.h>
#include <linux/netfilter_ipv4/ip_nat_core.h>
#include <linux/netfilter_ipv4/ip_nat_rule.h>
#include <linux/netfilter_ipv4/listhelp.h>
#if 0
#define DEBUGP printk
......
......@@ -30,9 +30,6 @@
#include <net/checksum.h>
#include <linux/spinlock.h>
#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/ip_nat.h>
#include <linux/netfilter_ipv4/ip_nat_rule.h>
#include <linux/netfilter_ipv4/ip_nat_protocol.h>
......@@ -40,7 +37,6 @@
#include <linux/netfilter_ipv4/ip_nat_helper.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv4/ip_conntrack_core.h>
#include <linux/netfilter_ipv4/listhelp.h>
#if 0
#define DEBUGP printk
......
......@@ -70,9 +70,6 @@ do { \
#define IP_NF_ASSERT(x)
#endif
#include <linux/netfilter_ipv4/listhelp.h>
#if 0
/* All the better to debug you with... */
#define static
......
This diff is collapsed.
......@@ -37,7 +37,6 @@
#include <net/netfilter/nf_conntrack_protocol.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <linux/netfilter_ipv4/listhelp.h>
#if 0
#define DEBUGP printk
......
......@@ -81,7 +81,7 @@ xt_unregister_target(struct xt_target *target)
int af = target->family;
mutex_lock(&xt[af].mutex);
LIST_DELETE(&xt[af].target, target);
list_del(&target->list);
mutex_unlock(&xt[af].mutex);
}
EXPORT_SYMBOL(xt_unregister_target);
......@@ -138,7 +138,7 @@ xt_unregister_match(struct xt_match *match)
int af = match->family;
mutex_lock(&xt[af].mutex);
LIST_DELETE(&xt[af].match, match);
list_del(&match->list);
mutex_unlock(&xt[af].mutex);
}
EXPORT_SYMBOL(xt_unregister_match);
......@@ -575,15 +575,18 @@ int xt_register_table(struct xt_table *table,
{
int ret;
struct xt_table_info *private;
struct xt_table *t;
ret = mutex_lock_interruptible(&xt[table->af].mutex);
if (ret != 0)
return ret;
/* Don't autoload: we'd eat our tail... */
if (list_named_find(&xt[table->af].tables, table->name)) {
ret = -EEXIST;
goto unlock;
list_for_each_entry(t, &xt[table->af].tables, list) {
if (strcmp(t->name, table->name) == 0) {
ret = -EEXIST;
goto unlock;
}
}
/* Simplifies replace_table code. */
......@@ -598,7 +601,7 @@ int xt_register_table(struct xt_table *table,
/* save number of initial entries */
private->initial_entries = private->number;
list_prepend(&xt[table->af].tables, table);
list_add(&table->list, &xt[table->af].tables);
ret = 0;
unlock:
......@@ -613,7 +616,7 @@ void *xt_unregister_table(struct xt_table *table)
mutex_lock(&xt[table->af].mutex);
private = table->private;
LIST_DELETE(&xt[table->af].tables, table);
list_del(&table->list);
mutex_unlock(&xt[table->af].mutex);
return private;
......
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