*
*/
#include <linux/module.h>
-#include <linux/config.h>
#include <linux/proc_fs.h>
#include <linux/jhash.h>
#include <linux/bitops.h>
#define DEBUGP
#endif
-#define ASSERT_READ_LOCK(x)
-
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
MODULE_DESCRIPTION("iptables target for CLUSTERIP");
atomic_t entries; /* number of entries/rules
* referencing us */
- u_int32_t clusterip; /* the IP address */
+ __be32 clusterip; /* the IP address */
u_int8_t clustermac[ETH_ALEN]; /* the MAC address */
struct net_device *dev; /* device */
u_int16_t num_total_nodes; /* total number of nodes */
}
static struct clusterip_config *
-__clusterip_config_find(u_int32_t clusterip)
+__clusterip_config_find(__be32 clusterip)
{
struct list_head *pos;
- ASSERT_READ_LOCK(&clusterip_lock);
list_for_each(pos, &clusterip_configs) {
struct clusterip_config *c = list_entry(pos,
struct clusterip_config, list);
}
static inline struct clusterip_config *
-clusterip_config_find_get(u_int32_t clusterip, int entry)
+clusterip_config_find_get(__be32 clusterip, int entry)
{
struct clusterip_config *c;
}
static struct clusterip_config *
-clusterip_config_init(struct ipt_clusterip_tgt_info *i, u_int32_t ip,
+clusterip_config_init(struct ipt_clusterip_tgt_info *i, __be32 ip,
struct net_device *dev)
{
struct clusterip_config *c;
- char buffer[16];
- c = kmalloc(sizeof(*c), GFP_ATOMIC);
+ c = kzalloc(sizeof(*c), GFP_ATOMIC);
if (!c)
return NULL;
- memset(c, 0, sizeof(*c));
c->dev = dev;
c->clusterip = ip;
memcpy(&c->clustermac, &i->clustermac, ETH_ALEN);
atomic_set(&c->entries, 1);
#ifdef CONFIG_PROC_FS
- /* create proc dir entry */
- sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(ip));
- c->pde = create_proc_entry(buffer, S_IWUSR|S_IRUSR, clusterip_procdir);
- if (!c->pde) {
- kfree(c);
- return NULL;
+ {
+ char buffer[16];
+
+ /* create proc dir entry */
+ sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(ip));
+ c->pde = create_proc_entry(buffer, S_IWUSR|S_IRUSR,
+ clusterip_procdir);
+ if (!c->pde) {
+ kfree(c);
+ return NULL;
+ }
}
c->pde->proc_fops = &clusterip_proc_fops;
c->pde->data = c;
return c;
}
+#ifdef CONFIG_PROC_FS
static int
clusterip_add_node(struct clusterip_config *c, u_int16_t nodenum)
{
return 1;
}
+#endif
static inline u_int32_t
clusterip_hashfn(struct sk_buff *skb, struct clusterip_config *config)
struct iphdr *iph = skb->nh.iph;
unsigned long hashval;
u_int16_t sport, dport;
- struct tcphdr *th;
- struct udphdr *uh;
- struct icmphdr *ih;
+ u_int16_t *ports;
switch (iph->protocol) {
case IPPROTO_TCP:
- th = (void *)iph+iph->ihl*4;
- sport = ntohs(th->source);
- dport = ntohs(th->dest);
- break;
case IPPROTO_UDP:
- uh = (void *)iph+iph->ihl*4;
- sport = ntohs(uh->source);
- dport = ntohs(uh->dest);
- break;
+ case IPPROTO_SCTP:
+ case IPPROTO_DCCP:
case IPPROTO_ICMP:
- ih = (void *)iph+iph->ihl*4;
- sport = ntohs(ih->un.echo.id);
- dport = (ih->type<<8)|ih->code;
+ ports = (void *)iph+iph->ihl*4;
+ sport = ports[0];
+ dport = ports[1];
break;
default:
if (net_ratelimit()) {
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
- const void *targinfo,
- void *userinfo)
+ const struct xt_target *target,
+ const void *targinfo)
{
const struct ipt_clusterip_tgt_info *cipinfo = targinfo;
enum ip_conntrack_info ctinfo;
static int
checkentry(const char *tablename,
const void *e_void,
+ const struct xt_target *target,
void *targinfo,
- unsigned int targinfosize,
unsigned int hook_mask)
{
struct ipt_clusterip_tgt_info *cipinfo = targinfo;
struct clusterip_config *config;
- if (targinfosize != IPT_ALIGN(sizeof(struct ipt_clusterip_tgt_info))) {
- printk(KERN_WARNING "CLUSTERIP: targinfosize %u != %Zu\n",
- targinfosize,
- IPT_ALIGN(sizeof(struct ipt_clusterip_tgt_info)));
- return 0;
- }
-
if (cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP &&
cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT &&
cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT_DPT) {
return 0;
}
- if (e->ip.dmsk.s_addr != 0xffffffff
+ if (e->ip.dmsk.s_addr != htonl(0xffffffff)
|| e->ip.dst.s_addr == 0) {
printk(KERN_ERR "CLUSTERIP: Please specify destination IP\n");
return 0;
"has invalid config pointer!\n");
return 0;
}
- clusterip_config_entry_get(cipinfo->config);
} else {
/* Case B: This is a new rule referring to an existing
* clusterip config. */
cipinfo->config = config;
- clusterip_config_entry_get(cipinfo->config);
}
} else {
/* Case C: This is a completely new clusterip config */
cipinfo->config = config;
}
+ if (nf_ct_l3proto_try_module_get(target->family) < 0) {
+ printk(KERN_WARNING "can't load conntrack support for "
+ "proto=%d\n", target->family);
+ return 0;
+ }
+
return 1;
}
/* drop reference count of cluster config when rule is deleted */
-static void destroy(void *matchinfo, unsigned int matchinfosize)
+static void destroy(const struct xt_target *target, void *targinfo)
{
- struct ipt_clusterip_tgt_info *cipinfo = matchinfo;
+ struct ipt_clusterip_tgt_info *cipinfo = targinfo;
/* if no more entries are referencing the config, remove it
* from the list and destroy the proc entry */
clusterip_config_entry_put(cipinfo->config);
clusterip_config_put(cipinfo->config);
+
+ nf_ct_l3proto_module_put(target->family);
}
-static struct ipt_target clusterip_tgt = {
- .name = "CLUSTERIP",
- .target = &target,
- .checkentry = &checkentry,
- .destroy = &destroy,
- .me = THIS_MODULE
+static struct ipt_target clusterip_tgt = {
+ .name = "CLUSTERIP",
+ .target = target,
+ .targetsize = sizeof(struct ipt_clusterip_tgt_info),
+ .checkentry = checkentry,
+ .destroy = destroy,
+ .me = THIS_MODULE
};
/* hardcoded for 48bit ethernet and 32bit ipv4 addresses */
struct arp_payload {
u_int8_t src_hw[ETH_ALEN];
- u_int32_t src_ip;
+ __be32 src_ip;
u_int8_t dst_hw[ETH_ALEN];
- u_int32_t dst_ip;
+ __be32 dst_ip;
} __attribute__ ((packed));
#ifdef CLUSTERIP_DEBUG
{
#define PROC_WRITELEN 10
char buffer[PROC_WRITELEN+1];
- struct proc_dir_entry *pde = PDE(file->f_dentry->d_inode);
+ struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct clusterip_config *c = pde->data;
unsigned long nodenum;
#endif /* CONFIG_PROC_FS */
-static int init_or_cleanup(int fini)
+static int __init ipt_clusterip_init(void)
{
int ret;
- if (fini)
- goto cleanup;
-
- if (ipt_register_target(&clusterip_tgt)) {
- ret = -EINVAL;
- goto cleanup_none;
- }
+ ret = ipt_register_target(&clusterip_tgt);
+ if (ret < 0)
+ return ret;
- if (nf_register_hook(&cip_arp_ops) < 0) {
- ret = -EINVAL;
+ ret = nf_register_hook(&cip_arp_ops);
+ if (ret < 0)
goto cleanup_target;
- }
#ifdef CONFIG_PROC_FS
clusterip_procdir = proc_mkdir("ipt_CLUSTERIP", proc_net);
printk(KERN_NOTICE "ClusterIP Version %s loaded successfully\n",
CLUSTERIP_VERSION);
-
return 0;
-cleanup:
- printk(KERN_NOTICE "ClusterIP Version %s unloading\n",
- CLUSTERIP_VERSION);
#ifdef CONFIG_PROC_FS
- remove_proc_entry(clusterip_procdir->name, clusterip_procdir->parent);
-#endif
cleanup_hook:
nf_unregister_hook(&cip_arp_ops);
+#endif /* CONFIG_PROC_FS */
cleanup_target:
ipt_unregister_target(&clusterip_tgt);
-cleanup_none:
- return -EINVAL;
-}
-
-static int __init init(void)
-{
- return init_or_cleanup(0);
+ return ret;
}
-static void __exit fini(void)
+static void __exit ipt_clusterip_fini(void)
{
- init_or_cleanup(1);
+ printk(KERN_NOTICE "ClusterIP Version %s unloading\n",
+ CLUSTERIP_VERSION);
+#ifdef CONFIG_PROC_FS
+ remove_proc_entry(clusterip_procdir->name, clusterip_procdir->parent);
+#endif
+ nf_unregister_hook(&cip_arp_ops);
+ ipt_unregister_target(&clusterip_tgt);
}
-module_init(init);
-module_exit(fini);
+module_init(ipt_clusterip_init);
+module_exit(ipt_clusterip_fini);
git://git.onelab.eu / linux-2.6.git / blobdiff