diff options
Diffstat (limited to 'net/bridge/netfilter/ebtables.c')
| -rw-r--r-- | net/bridge/netfilter/ebtables.c | 97 |
1 files changed, 45 insertions, 52 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index 3a13ed64345..3df55b2bd91 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -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> @@ -31,36 +32,9 @@ /* 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> - -#if 0 -/* use this for remote debugging - * Copyright (C) 1998 by Ori Pomerantz - * Print the string to the appropriate tty, the one - * the current task uses - */ -static void print_string(char *str) -{ - struct tty_struct *my_tty; - - /* The tty for the current task */ - my_tty = current->signal->tty; - if (my_tty != NULL) { - my_tty->driver->write(my_tty, 0, str, strlen(str)); - my_tty->driver->write(my_tty, 0, "\015\012", 2); - } -} - -#define BUGPRINT(args) print_string(args); -#else #define BUGPRINT(format, args...) printk("kernel msg: ebtables bug: please "\ "report to author: "format, ## args) /* #define BUGPRINT(format, args...) */ -#endif #define MEMPRINT(format, args...) printk("kernel msg: ebtables "\ ": out of memory: "format, ## args) /* #define MEMPRINT(format, args...) */ @@ -299,18 +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 @@ -1064,15 +1042,19 @@ free_newinfo: 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; @@ -1081,21 +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; @@ -1104,21 +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; @@ -1127,13 +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 || @@ -1179,10 +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 */ @@ -1190,7 +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: @@ -1216,7 +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) { @@ -1486,7 +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; |