#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
+#include <net/net_namespace.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv4/ip_tables.h>
static struct kmem_cache *hashlimit_cachep __read_mostly;
static inline bool dst_cmp(const struct dsthash_ent *ent,
- struct dsthash_dst *b)
+ const struct dsthash_dst *b)
{
return !memcmp(&ent->dst, b, sizeof(ent->dst));
}
}
static struct dsthash_ent *
-dsthash_find(const struct xt_hashlimit_htable *ht, struct dsthash_dst *dst)
+dsthash_find(const struct xt_hashlimit_htable *ht,
+ const struct dsthash_dst *dst)
{
struct dsthash_ent *ent;
struct hlist_node *pos;
/* allocate dsthash_ent, initialize dst, put in htable and lock it */
static struct dsthash_ent *
-dsthash_alloc_init(struct xt_hashlimit_htable *ht, struct dsthash_dst *dst)
+dsthash_alloc_init(struct xt_hashlimit_htable *ht,
+ const struct dsthash_dst *dst)
{
struct dsthash_ent *ent;
return 0;
}
-static bool select_all(struct xt_hashlimit_htable *ht, struct dsthash_ent *he)
+static bool select_all(const struct xt_hashlimit_htable *ht,
+ const struct dsthash_ent *he)
{
return 1;
}
-static bool select_gc(struct xt_hashlimit_htable *ht, struct dsthash_ent *he)
+static bool select_gc(const struct xt_hashlimit_htable *ht,
+ const struct dsthash_ent *he)
{
- return (jiffies >= he->expires);
+ return jiffies >= he->expires;
}
static void htable_selective_cleanup(struct xt_hashlimit_htable *ht,
- bool (*select)(struct xt_hashlimit_htable *ht,
- struct dsthash_ent *he))
+ bool (*select)(const struct xt_hashlimit_htable *ht,
+ const struct dsthash_ent *he))
{
unsigned int i;
vfree(hinfo);
}
-static struct xt_hashlimit_htable *htable_find_get(char *name, int family)
+static struct xt_hashlimit_htable *htable_find_get(const char *name,
+ int family)
{
struct xt_hashlimit_htable *hinfo;
struct hlist_node *pos;
}
static int
-hashlimit_init_dst(struct xt_hashlimit_htable *hinfo, struct dsthash_dst *dst,
+hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo,
+ struct dsthash_dst *dst,
const struct sk_buff *skb, unsigned int protoff)
{
__be16 _ports[2], *ports;
unsigned int protoff,
bool *hotdrop)
{
- struct xt_hashlimit_info *r =
- ((struct xt_hashlimit_info *)matchinfo)->u.master;
+ const struct xt_hashlimit_info *r =
+ ((const struct xt_hashlimit_info *)matchinfo)->u.master;
struct xt_hashlimit_htable *hinfo = r->hinfo;
unsigned long now = jiffies;
struct dsthash_ent *dh;
static void
hashlimit_destroy(const struct xt_match *match, void *matchinfo)
{
- struct xt_hashlimit_info *r = matchinfo;
+ const struct xt_hashlimit_info *r = matchinfo;
htable_put(r->hinfo);
}
}
#endif
-static struct xt_match xt_hashlimit[] = {
+static struct xt_match xt_hashlimit[] __read_mostly = {
{
.name = "hashlimit",
.family = AF_INET,
return 0;
}
-static struct seq_operations dl_seq_ops = {
+static const struct seq_operations dl_seq_ops = {
.start = dl_seq_start,
.next = dl_seq_next,
.stop = dl_seq_stop,
err = -ENOMEM;
hashlimit_cachep = kmem_cache_create("xt_hashlimit",
sizeof(struct dsthash_ent), 0, 0,
- NULL, NULL);
+ NULL);
if (!hashlimit_cachep) {
printk(KERN_ERR "xt_hashlimit: unable to create slab cache\n");
goto err2;
}
- hashlimit_procdir4 = proc_mkdir("ipt_hashlimit", proc_net);
+ hashlimit_procdir4 = proc_mkdir("ipt_hashlimit", init_net.proc_net);
if (!hashlimit_procdir4) {
printk(KERN_ERR "xt_hashlimit: unable to create proc dir "
"entry\n");
goto err3;
}
- hashlimit_procdir6 = proc_mkdir("ip6t_hashlimit", proc_net);
+ hashlimit_procdir6 = proc_mkdir("ip6t_hashlimit", init_net.proc_net);
if (!hashlimit_procdir6) {
printk(KERN_ERR "xt_hashlimit: unable to create proc dir "
"entry\n");
}
return 0;
err4:
- remove_proc_entry("ipt_hashlimit", proc_net);
+ remove_proc_entry("ipt_hashlimit", init_net.proc_net);
err3:
kmem_cache_destroy(hashlimit_cachep);
err2:
static void __exit xt_hashlimit_fini(void)
{
- remove_proc_entry("ipt_hashlimit", proc_net);
- remove_proc_entry("ip6t_hashlimit", proc_net);
+ remove_proc_entry("ipt_hashlimit", init_net.proc_net);
+ remove_proc_entry("ip6t_hashlimit", init_net.proc_net);
kmem_cache_destroy(hashlimit_cachep);
xt_unregister_matches(xt_hashlimit, ARRAY_SIZE(xt_hashlimit));
}