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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 

Conflicts:

	net/netfilter/nf_conntrack_netlink.c
This commit is contained in:
David S. Miller 2008-11-28 02:19:15 -08:00
parent 475ad8e217 d6e8cc6cc7
commit ed77a89c30
40 changed files with 514 additions and 221 deletions
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3
include/linux/netfilter_bridge/ebtables.h
View File

@ -300,7 +300,8 @@ struct ebt_table
#define EBT_ALIGN(s) (((s) + (__alignof__(struct ebt_replace)-1)) & \
~(__alignof__(struct ebt_replace)-1))
extern int ebt_register_table(struct ebt_table *table);
extern struct ebt_table *ebt_register_table(struct net *net,
struct ebt_table *table);
extern void ebt_unregister_table(struct ebt_table *table);
extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,

2
include/linux/netfilter_ipv4/ipt_policy.h
View File

@ -1,6 +1,8 @@
#ifndef _IPT_POLICY_H
#define _IPT_POLICY_H
#include <linux/netfilter/xt_policy.h>
#define IPT_POLICY_MAX_ELEM XT_POLICY_MAX_ELEM
/* ipt_policy_flags */

2
include/linux/netfilter_ipv6/ip6t_policy.h
View File

@ -1,6 +1,8 @@
#ifndef _IP6T_POLICY_H
#define _IP6T_POLICY_H
#include <linux/netfilter/xt_policy.h>
#define IP6T_POLICY_MAX_ELEM XT_POLICY_MAX_ELEM
/* ip6t_policy_flags */

5
include/net/netfilter/nf_conntrack.h
View File

@ -199,7 +199,7 @@ __nf_conntrack_find(struct net *net, const struct nf_conntrack_tuple *tuple);
extern void nf_conntrack_hash_insert(struct nf_conn *ct);
extern void nf_conntrack_flush(struct net *net);
extern void nf_conntrack_flush(struct net *net, u32 pid, int report);
extern bool nf_ct_get_tuplepr(const struct sk_buff *skb,
unsigned int nhoff, u_int16_t l3num,
@ -298,5 +298,8 @@ do { \
local_bh_enable(); \
} while (0)
#define MODULE_ALIAS_NFCT_HELPER(helper) \
MODULE_ALIAS("nfct-helper-" helper)
#endif /* __KERNEL__ */
#endif /* _NF_CONNTRACK_H */

57
include/net/netfilter/nf_conntrack_ecache.h
View File

@ -17,6 +17,13 @@ struct nf_conntrack_ecache {
unsigned int events;
};
/* This structure is passed to event handler */
struct nf_ct_event {
struct nf_conn *ct;
u32 pid;
int report;
};
extern struct atomic_notifier_head nf_conntrack_chain;
extern int nf_conntrack_register_notifier(struct notifier_block *nb);
extern int nf_conntrack_unregister_notifier(struct notifier_block *nb);
@ -39,22 +46,56 @@ nf_conntrack_event_cache(enum ip_conntrack_events event, struct nf_conn *ct)
local_bh_enable();
}
static inline void nf_conntrack_event(enum ip_conntrack_events event,
struct nf_conn *ct)
static inline void
nf_conntrack_event_report(enum ip_conntrack_events event,
struct nf_conn *ct,
u32 pid,
int report)
{
struct nf_ct_event item = {
.ct = ct,
.pid = pid,
.report = report
};
if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
atomic_notifier_call_chain(&nf_conntrack_chain, event, ct);
atomic_notifier_call_chain(&nf_conntrack_chain, event, &item);
}
static inline void
nf_conntrack_event(enum ip_conntrack_events event, struct nf_conn *ct)
{
nf_conntrack_event_report(event, ct, 0, 0);
}
struct nf_exp_event {
struct nf_conntrack_expect *exp;
u32 pid;
int report;
};
extern struct atomic_notifier_head nf_ct_expect_chain;
extern int nf_ct_expect_register_notifier(struct notifier_block *nb);
extern int nf_ct_expect_unregister_notifier(struct notifier_block *nb);
static inline void
nf_ct_expect_event_report(enum ip_conntrack_expect_events event,
struct nf_conntrack_expect *exp,
u32 pid,
int report)
{
struct nf_exp_event item = {
.exp = exp,
.pid = pid,
.report = report
};
atomic_notifier_call_chain(&nf_ct_expect_chain, event, &item);
}
static inline void
nf_ct_expect_event(enum ip_conntrack_expect_events event,
struct nf_conntrack_expect *exp)
{
atomic_notifier_call_chain(&nf_ct_expect_chain, event, exp);
nf_ct_expect_event_report(event, exp, 0, 0);
}
extern int nf_conntrack_ecache_init(struct net *net);
@ -66,9 +107,17 @@ static inline void nf_conntrack_event_cache(enum ip_conntrack_events event,
struct nf_conn *ct) {}
static inline void nf_conntrack_event(enum ip_conntrack_events event,
struct nf_conn *ct) {}
static inline void nf_conntrack_event_report(enum ip_conntrack_events event,
struct nf_conn *ct,
u32 pid,
int report) {}
static inline void nf_ct_deliver_cached_events(const struct nf_conn *ct) {}
static inline void nf_ct_expect_event(enum ip_conntrack_expect_events event,
struct nf_conntrack_expect *exp) {}
static inline void nf_ct_expect_event_report(enum ip_conntrack_expect_events e,
struct nf_conntrack_expect *exp,
u32 pid,
int report) {}
static inline void nf_ct_event_cache_flush(struct net *net) {}
static inline int nf_conntrack_ecache_init(struct net *net)

2
include/net/netfilter/nf_conntrack_expect.h
View File

@ -100,6 +100,8 @@ void nf_ct_expect_init(struct nf_conntrack_expect *, unsigned int, u_int8_t,
u_int8_t, const __be16 *, const __be16 *);
void nf_ct_expect_put(struct nf_conntrack_expect *exp);
int nf_ct_expect_related(struct nf_conntrack_expect *expect);
int nf_ct_expect_related_report(struct nf_conntrack_expect *expect,
u32 pid, int report);
#endif /*_NF_CONNTRACK_EXPECT_H*/

5
include/net/netfilter/nf_conntrack_helper.h
View File

@ -38,9 +38,6 @@ struct nf_conntrack_helper
unsigned int expect_class_max;
};
extern struct nf_conntrack_helper *
__nf_ct_helper_find(const struct nf_conntrack_tuple *tuple);
extern struct nf_conntrack_helper *
__nf_conntrack_helper_find_byname(const char *name);
@ -49,6 +46,8 @@ extern void nf_conntrack_helper_unregister(struct nf_conntrack_helper *);
extern struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct, gfp_t gfp);
extern int __nf_ct_try_assign_helper(struct nf_conn *ct, gfp_t flags);
static inline struct nf_conn_help *nfct_help(const struct nf_conn *ct)
{
return nf_ct_ext_find(ct, NF_CT_EXT_HELPER);

2
include/net/netfilter/nf_conntrack_l4proto.h
View File

@ -129,7 +129,7 @@ extern const struct nla_policy nf_ct_port_nla_policy[];
&& net_ratelimit())
#endif
#else
#define LOG_INVALID(net, proto) 0
static inline int LOG_INVALID(struct net *net, int proto) { return 0; }
#endif /* CONFIG_SYSCTL */
#endif /*_NF_CONNTRACK_PROTOCOL_H*/

14
include/net/netfilter/nfnetlink_log.h Normal file
View File

@ -0,0 +1,14 @@
#ifndef _KER_NFNETLINK_LOG_H
#define _KER_NFNETLINK_LOG_H
void
nfulnl_log_packet(u_int8_t pf,
unsigned int hooknum,
const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const struct nf_loginfo *li_user,
const char *prefix);
#endif /* _KER_NFNETLINK_LOG_H */

5
include/net/netns/x_tables.h
View File

@ -4,7 +4,12 @@
#include <linux/list.h>
#include <linux/netfilter.h>
struct ebt_table;
struct netns_xt {
struct list_head tables[NFPROTO_NUMPROTO];
struct ebt_table *broute_table;
struct ebt_table *frame_filter;
struct ebt_table *frame_nat;
};
#endif

2
net/bridge/br_netfilter.c
View File

@ -369,7 +369,7 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
if (err != -EHOSTUNREACH || !in_dev || IN_DEV_FORWARD(in_dev))
goto free_skb;
if (!ip_route_output_key(&init_net, &rt, &fl)) {
if (!ip_route_output_key(dev_net(dev), &rt, &fl)) {
/* - Bridged-and-DNAT'ed traffic doesn't
* require ip_forwarding. */
if (((struct dst_entry *)rt)->dev == dev) {

26
net/bridge/netfilter/ebtable_broute.c
View File

@ -56,29 +56,47 @@ static int ebt_broute(struct sk_buff *skb)
int ret;
ret = ebt_do_table(NF_BR_BROUTING, skb, skb->dev, NULL,
&broute_table);
dev_net(skb->dev)->xt.broute_table);
if (ret == NF_DROP)
return 1; /* route it */
return 0; /* bridge it */
}
static int __net_init broute_net_init(struct net *net)
{
net->xt.broute_table = ebt_register_table(net, &broute_table);
if (IS_ERR(net->xt.broute_table))
return PTR_ERR(net->xt.broute_table);
return 0;
}
static void __net_exit broute_net_exit(struct net *net)
{
ebt_unregister_table(net->xt.broute_table);
}
static struct pernet_operations broute_net_ops = {
.init = broute_net_init,
.exit = broute_net_exit,
};
static int __init ebtable_broute_init(void)
{
int ret;
ret = ebt_register_table(&broute_table);
ret = register_pernet_subsys(&broute_net_ops);
if (ret < 0)
return ret;
/* see br_input.c */
rcu_assign_pointer(br_should_route_hook, ebt_broute);
return ret;
return 0;
}
static void __exit ebtable_broute_fini(void)
{
rcu_assign_pointer(br_should_route_hook, NULL);
synchronize_net();
ebt_unregister_table(&broute_table);
unregister_pernet_subsys(&broute_net_ops);
}
module_init(ebtable_broute_init);

41
net/bridge/netfilter/ebtable_filter.c
View File

@ -61,29 +61,36 @@ static struct ebt_table frame_filter =
};
static unsigned int
ebt_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
ebt_in_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, int (*okfn)(struct sk_buff *))
{
return ebt_do_table(hook, skb, in, out, &frame_filter);
return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_filter);
}
static unsigned int
ebt_out_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, int (*okfn)(struct sk_buff *))
{
return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_filter);
}
static struct nf_hook_ops ebt_ops_filter[] __read_mostly = {
{
.hook = ebt_hook,
.hook = ebt_in_hook,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_LOCAL_IN,
.priority = NF_BR_PRI_FILTER_BRIDGED,
},
{
.hook = ebt_hook,
.hook = ebt_in_hook,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_FORWARD,
.priority = NF_BR_PRI_FILTER_BRIDGED,
},
{
.hook = ebt_hook,
.hook = ebt_out_hook,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_LOCAL_OUT,
@ -91,23 +98,41 @@ static struct nf_hook_ops ebt_ops_filter[] __read_mostly = {
},
};
static int __net_init frame_filter_net_init(struct net *net)
{
net->xt.frame_filter = ebt_register_table(net, &frame_filter);
if (IS_ERR(net->xt.frame_filter))
return PTR_ERR(net->xt.frame_filter);
return 0;
}
static void __net_exit frame_filter_net_exit(struct net *net)
{
ebt_unregister_table(net->xt.frame_filter);
}
static struct pernet_operations frame_filter_net_ops = {
.init = frame_filter_net_init,
.exit = frame_filter_net_exit,
};
static int __init ebtable_filter_init(void)
{
int ret;
ret = ebt_register_table(&frame_filter);
ret = register_pernet_subsys(&frame_filter_net_ops);
if (ret < 0)
return ret;
ret = nf_register_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter));
if (ret < 0)
ebt_unregister_table(&frame_filter);
unregister_pernet_subsys(&frame_filter_net_ops);
return ret;
}
static void __exit ebtable_filter_fini(void)
{
nf_unregister_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter));
ebt_unregister_table(&frame_filter);
unregister_pernet_subsys(&frame_filter_net_ops);
}
module_init(ebtable_filter_init);

38
net/bridge/netfilter/ebtable_nat.c
View File

@ -61,36 +61,36 @@ static struct ebt_table frame_nat =
};
static unsigned int
ebt_nat_dst(unsigned int hook, struct sk_buff *skb, const struct net_device *in
ebt_nat_in(unsigned int hook, struct sk_buff *skb, const struct net_device *in
, const struct net_device *out, int (*okfn)(struct sk_buff *))
{
return ebt_do_table(hook, skb, in, out, &frame_nat);
return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_nat);
}
static unsigned int
ebt_nat_src(unsigned int hook, struct sk_buff *skb, const struct net_device *in
ebt_nat_out(unsigned int hook, struct sk_buff *skb, const struct net_device *in
, const struct net_device *out, int (*okfn)(struct sk_buff *))
{
return ebt_do_table(hook, skb, in, out, &frame_nat);
return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_nat);
}
static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
{
.hook = ebt_nat_dst,
.hook = ebt_nat_out,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_LOCAL_OUT,
.priority = NF_BR_PRI_NAT_DST_OTHER,
},
{
.hook = ebt_nat_src,
.hook = ebt_nat_out,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_POST_ROUTING,
.priority = NF_BR_PRI_NAT_SRC,
},
{
.hook = ebt_nat_dst,
.hook = ebt_nat_in,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_PRE_ROUTING,
@ -98,23 +98,41 @@ static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
},
};
static int __net_init frame_nat_net_init(struct net *net)
{
net->xt.frame_nat = ebt_register_table(net, &frame_nat);
if (IS_ERR(net->xt.frame_nat))
return PTR_ERR(net->xt.frame_nat);
return 0;
}
static void __net_exit frame_nat_net_exit(struct net *net)
{
ebt_unregister_table(net->xt.frame_nat);
}
static struct pernet_operations frame_nat_net_ops = {
.init = frame_nat_net_init,
.exit = frame_nat_net_exit,
};
static int __init ebtable_nat_init(void)
{
int ret;
ret = ebt_register_table(&frame_nat);
ret = register_pernet_subsys(&frame_nat_net_ops);
if (ret < 0)
return ret;
ret = nf_register_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
if (ret < 0)
ebt_unregister_table(&frame_nat);
unregister_pernet_subsys(&frame_nat_net_ops);
return ret;
}
static void __exit ebtable_nat_fini(void)
{
nf_unregister_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
ebt_unregister_table(&frame_nat);
unregister_pernet_subsys(&frame_nat_net_ops);
}
module_init(ebtable_nat_init);

52
net/bridge/netfilter/ebtables.c
View File

@ -55,7 +55,6 @@
static DEFINE_MUTEX(ebt_mutex);
static LIST_HEAD(ebt_tables);
static struct xt_target ebt_standard_target = {
.name = "standard",
@ -315,9 +314,11 @@ find_inlist_lock(struct list_head *head, const char *name, const char *prefix,
}
static inline struct ebt_table *
find_table_lock(const char *name, int *error, struct mutex *mutex)
find_table_lock(struct net *net, const char *name, int *error,
struct mutex *mutex)
{
return find_inlist_lock(&ebt_tables, name, "ebtable_", error, mutex);
return find_inlist_lock(&net->xt.tables[NFPROTO_BRIDGE], name,
"ebtable_", error, mutex);
}
static inline int
@ -944,7 +945,7 @@ static void get_counters(struct ebt_counter *oldcounters,
}
/* replace the table */
static int do_replace(void __user *user, unsigned int len)
static int do_replace(struct net *net, void __user *user, unsigned int len)
{
int ret, i, countersize;
struct ebt_table_info *newinfo;
@ -1016,7 +1017,7 @@ static int do_replace(void __user *user, unsigned int len)
if (ret != 0)
goto free_counterstmp;
t = find_table_lock(tmp.name, &ret, &ebt_mutex);
t = find_table_lock(net, tmp.name, &ret, &ebt_mutex);
if (!t) {
ret = -ENOENT;
goto free_iterate;
@ -1097,7 +1098,7 @@ free_newinfo:
return ret;
}
int ebt_register_table(struct ebt_table *table)
struct ebt_table *ebt_register_table(struct net *net, struct ebt_table *table)
{
struct ebt_table_info *newinfo;
struct ebt_table *t;
@ -1109,14 +1110,21 @@ int ebt_register_table(struct ebt_table *table)
repl->entries_size == 0 ||
repl->counters || table->private) {
BUGPRINT("Bad table data for ebt_register_table!!!\n");
return -EINVAL;
return ERR_PTR(-EINVAL);
}
/* Don't add one table to multiple lists. */
table = kmemdup(table, sizeof(struct ebt_table), GFP_KERNEL);
if (!table) {
ret = -ENOMEM;
goto out;
}
countersize = COUNTER_OFFSET(repl->nentries) * nr_cpu_ids;
newinfo = vmalloc(sizeof(*newinfo) + countersize);
ret = -ENOMEM;
if (!newinfo)
return -ENOMEM;
goto free_table;
p = vmalloc(repl->entries_size);
if (!p)
@ -1148,7 +1156,7 @@ int ebt_register_table(struct ebt_table *table)
if (table->check && table->check(newinfo, table->valid_hooks)) {
BUGPRINT("The table doesn't like its own initial data, lol\n");
return -EINVAL;
return ERR_PTR(-EINVAL);
}
table->private = newinfo;
@ -1157,7 +1165,7 @@ int ebt_register_table(struct ebt_table *table)
if (ret != 0)
goto free_chainstack;
list_for_each_entry(t, &ebt_tables, list) {
list_for_each_entry(t, &net->xt.tables[NFPROTO_BRIDGE], list) {
if (strcmp(t->name, table->name) == 0) {
ret = -EEXIST;
BUGPRINT("Table name already exists\n");
@ -1170,9 +1178,9 @@ int ebt_register_table(struct ebt_table *table)
ret = -ENOENT;
goto free_unlock;
}
list_add(&table->list, &ebt_tables);
list_add(&table->list, &net->xt.tables[NFPROTO_BRIDGE]);
mutex_unlock(&ebt_mutex);
return 0;
return table;
free_unlock:
mutex_unlock(&ebt_mutex);
free_chainstack:
@ -1184,7 +1192,10 @@ free_chainstack:
vfree(newinfo->entries);
free_newinfo:
vfree(newinfo);
return ret;
free_table:
kfree(table);
out:
return ERR_PTR(ret);
}
void ebt_unregister_table(struct ebt_table *table)
@ -1198,6 +1209,10 @@ void ebt_unregister_table(struct ebt_table *table)
mutex_lock(&ebt_mutex);
list_del(&table->list);
mutex_unlock(&ebt_mutex);
EBT_ENTRY_ITERATE(table->private->entries, table->private->entries_size,
ebt_cleanup_entry, NULL);
if (table->private->nentries)
module_put(table->me);
vfree(table->private->entries);
if (table->private->chainstack) {
for_each_possible_cpu(i)
@ -1205,10 +1220,11 @@ void ebt_unregister_table(struct ebt_table *table)
vfree(table->private->chainstack);
}
vfree(table->private);
kfree(table);
}
/* userspace just supplied us with counters */
static int update_counters(void __user *user, unsigned int len)
static int update_counters(struct net *net, void __user *user, unsigned int len)
{
int i, ret;
struct ebt_counter *tmp;
@ -1228,7 +1244,7 @@ static int update_counters(void __user *user, unsigned int len)
return -ENOMEM;
}
t = find_table_lock(hlp.name, &ret, &ebt_mutex);
t = find_table_lock(net, hlp.name, &ret, &ebt_mutex);
if (!t)
goto free_tmp;
@ -1386,10 +1402,10 @@ static int do_ebt_set_ctl(struct sock *sk,
switch(cmd) {
case EBT_SO_SET_ENTRIES:
ret = do_replace(user, len);
ret = do_replace(sock_net(sk), user, len);
break;
case EBT_SO_SET_COUNTERS:
ret = update_counters(user, len);
ret = update_counters(sock_net(sk), user, len);
break;
default:
ret = -EINVAL;
@ -1406,7 +1422,7 @@ static int do_ebt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
if (copy_from_user(&tmp, user, sizeof(tmp)))
return -EFAULT;
t = find_table_lock(tmp.name, &ret, &ebt_mutex);
t = find_table_lock(sock_net(sk), tmp.name, &ret, &ebt_mutex);
if (!t)
return ret;

3
net/ipv4/netfilter.c
View File

@ -125,6 +125,7 @@ struct ip_rt_info {
__be32 daddr;
__be32 saddr;
u_int8_t tos;
u_int32_t mark;
};
static void nf_ip_saveroute(const struct sk_buff *skb,
@ -138,6 +139,7 @@ static void nf_ip_saveroute(const struct sk_buff *skb,
rt_info->tos = iph->tos;
rt_info->daddr = iph->daddr;
rt_info->saddr = iph->saddr;
rt_info->mark = skb->mark;
}
}
@ -150,6 +152,7 @@ static int nf_ip_reroute(struct sk_buff *skb,
const struct iphdr *iph = ip_hdr(skb);
if (!(iph->tos == rt_info->tos
&& skb->mark == rt_info->mark
&& iph->daddr == rt_info->daddr
&& iph->saddr == rt_info->saddr))
return ip_route_me_harder(skb, RTN_UNSPEC);

12
net/ipv4/netfilter/arptable_filter.c
View File

@ -75,16 +75,6 @@ static unsigned int arpt_out_hook(unsigned int hook,
dev_net(out)->ipv4.arptable_filter);
}
static unsigned int arpt_forward_hook(unsigned int hook,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return arpt_do_table(skb, hook, in, out,
dev_net(in)->ipv4.arptable_filter);
}
static struct nf_hook_ops arpt_ops[] __read_mostly = {
{
.hook = arpt_in_hook,
@ -101,7 +91,7 @@ static struct nf_hook_ops arpt_ops[] __read_mostly = {
.priority = NF_IP_PRI_FILTER,
},
{
.hook = arpt_forward_hook,
.hook = arpt_in_hook,
.owner = THIS_MODULE,
.pf = NFPROTO_ARP,
.hooknum = NF_ARP_FORWARD,

16
net/ipv4/netfilter/ipt_addrtype.c
View File

@ -23,24 +23,25 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_DESCRIPTION("Xtables: address type match for IPv4");
static inline bool match_type(const struct net_device *dev, __be32 addr,
u_int16_t mask)
static inline bool match_type(struct net *net, const struct net_device *dev,
__be32 addr, u_int16_t mask)
{
return !!(mask & (1 << inet_dev_addr_type(&init_net, dev, addr)));
return !!(mask & (1 << inet_dev_addr_type(net, dev, addr)));
}
static bool
addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
{
struct net *net = dev_net(par->in ? par->in : par->out);
const struct ipt_addrtype_info *info = par->matchinfo;
const struct iphdr *iph = ip_hdr(skb);
bool ret = true;
if (info->source)
ret &= match_type(NULL, iph->saddr, info->source) ^
ret &= match_type(net, NULL, iph->saddr, info->source) ^
info->invert_source;
if (info->dest)
ret &= match_type(NULL, iph->daddr, info->dest) ^
ret &= match_type(net, NULL, iph->daddr, info->dest) ^
info->invert_dest;
return ret;
@ -49,6 +50,7 @@ addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
static bool
addrtype_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par)
{
struct net *net = dev_net(par->in ? par->in : par->out);
const struct ipt_addrtype_info_v1 *info = par->matchinfo;
const struct iphdr *iph = ip_hdr(skb);
const struct net_device *dev = NULL;
@ -60,10 +62,10 @@ addrtype_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par)
dev = par->out;
if (info->source)
ret &= match_type(dev, iph->saddr, info->source) ^
ret &= match_type(net, dev, iph->saddr, info->source) ^
(info->flags & IPT_ADDRTYPE_INVERT_SOURCE);
if (ret && info->dest)
ret &= match_type(dev, iph->daddr, info->dest) ^
ret &= match_type(net, dev, iph->daddr, info->dest) ^
!!(info->flags & IPT_ADDRTYPE_INVERT_DEST);
return ret;
}

23
net/ipv4/netfilter/nf_nat_rule.c
View File

@ -86,24 +86,6 @@ ipt_snat_target(struct sk_buff *skb, const struct xt_target_param *par)
return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_SRC);
}
/* Before 2.6.11 we did implicit source NAT if required. Warn about change. */
static void warn_if_extra_mangle(struct net *net, __be32 dstip, __be32 srcip)
{
static int warned = 0;
struct flowi fl = { .nl_u = { .ip4_u = { .daddr = dstip } } };
struct rtable *rt;
if (ip_route_output_key(net, &rt, &fl) != 0)
return;
if (rt->rt_src != srcip && !warned) {
printk("NAT: no longer support implicit source local NAT\n");
printk("NAT: packet src %pI4 -> dst %pI4\n", &srcip, &dstip);
warned = 1;
}
ip_rt_put(rt);
}
static unsigned int
ipt_dnat_target(struct sk_buff *skb, const struct xt_target_param *par)
{
@ -119,11 +101,6 @@ ipt_dnat_target(struct sk_buff *skb, const struct xt_target_param *par)
/* Connection must be valid and new. */
NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
if (par->hooknum == NF_INET_LOCAL_OUT &&
mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)
warn_if_extra_mangle(dev_net(par->out), ip_hdr(skb)->daddr,
mr->range[0].min_ip);
return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_DST);
}

5
net/ipv6/netfilter.c
View File

@ -56,6 +56,7 @@ EXPORT_SYMBOL(ip6_route_me_harder);
struct ip6_rt_info {
struct in6_addr daddr;
struct in6_addr saddr;
u_int32_t mark;
};
static void nf_ip6_saveroute(const struct sk_buff *skb,
@ -68,6 +69,7 @@ static void nf_ip6_saveroute(const struct sk_buff *skb,
rt_info->daddr = iph->daddr;
rt_info->saddr = iph->saddr;
rt_info->mark = skb->mark;
}
}
@ -79,7 +81,8 @@ static int nf_ip6_reroute(struct sk_buff *skb,
if (entry->hook == NF_INET_LOCAL_OUT) {
struct ipv6hdr *iph = ipv6_hdr(skb);
if (!ipv6_addr_equal(&iph->daddr, &rt_info->daddr) ||
!ipv6_addr_equal(&iph->saddr, &rt_info->saddr))
!ipv6_addr_equal(&iph->saddr, &rt_info->saddr) ||
skb->mark != rt_info->mark)
return ip6_route_me_harder(skb);
}
return 0;

17
net/ipv6/netfilter/ip6table_filter.c
View File

@ -61,7 +61,7 @@ static struct xt_table packet_filter = {
/* The work comes in here from netfilter.c. */
static unsigned int
ip6t_local_in_hook(unsigned int hook,
ip6t_in_hook(unsigned int hook,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
@ -71,17 +71,6 @@ ip6t_local_in_hook(unsigned int hook,
dev_net(in)->ipv6.ip6table_filter);
}
static unsigned int
ip6t_forward_hook(unsigned int hook,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return ip6t_do_table(skb, hook, in, out,
dev_net(in)->ipv6.ip6table_filter);
}
static unsigned int
ip6t_local_out_hook(unsigned int hook,
struct sk_buff *skb,
@ -105,14 +94,14 @@ ip6t_local_out_hook(unsigned int hook,
static struct nf_hook_ops ip6t_ops[] __read_mostly = {
{
.hook = ip6t_local_in_hook,
.hook = ip6t_in_hook,
.owner = THIS_MODULE,
.pf = PF_INET6,
.hooknum = NF_INET_LOCAL_IN,
.priority = NF_IP6_PRI_FILTER,
},
{
.hook = ip6t_forward_hook,
.hook = ip6t_in_hook,
.owner = THIS_MODULE,
.pf = PF_INET6,
.hooknum = NF_INET_FORWARD,

1
net/netfilter/nf_conntrack_amanda.c
View File

@ -30,6 +30,7 @@ MODULE_AUTHOR("Brian J. Murrell <netfilter@interlinx.bc.ca>");
MODULE_DESCRIPTION("Amanda connection tracking module");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_conntrack_amanda");
MODULE_ALIAS_NFCT_HELPER("amanda");
module_param(master_timeout, uint, 0600);
MODULE_PARM_DESC(master_timeout, "timeout for the master connection");

61
net/netfilter/nf_conntrack_core.c
View File

@ -39,13 +39,13 @@
#include <net/netfilter/nf_conntrack_extend.h>
#include <net/netfilter/nf_conntrack_acct.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_nat_core.h>
#define NF_CONNTRACK_VERSION "0.5.0"
unsigned int
(*nfnetlink_parse_nat_setup_hook)(struct nf_conn *ct,
enum nf_nat_manip_type manip,
struct nlattr *attr) __read_mostly;
int (*nfnetlink_parse_nat_setup_hook)(struct nf_conn *ct,
enum nf_nat_manip_type manip,
struct nlattr *attr) __read_mostly;
EXPORT_SYMBOL_GPL(nfnetlink_parse_nat_setup_hook);
DEFINE_SPINLOCK(nf_conntrack_lock);
@ -181,7 +181,8 @@ destroy_conntrack(struct nf_conntrack *nfct)
NF_CT_ASSERT(atomic_read(&nfct->use) == 0);
NF_CT_ASSERT(!timer_pending(&ct->timeout));
nf_conntrack_event(IPCT_DESTROY, ct);
if (!test_bit(IPS_DYING_BIT, &ct->status))
nf_conntrack_event(IPCT_DESTROY, ct);
set_bit(IPS_DYING_BIT, &ct->status);
/* To make sure we don't get any weird locking issues here:
@ -586,14 +587,7 @@ init_conntrack(struct net *net,
nf_conntrack_get(&ct->master->ct_general);
NF_CT_STAT_INC(net, expect_new);
} else {
struct nf_conntrack_helper *helper;
helper = __nf_ct_helper_find(&repl_tuple);
if (helper) {
help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
if (help)
rcu_assign_pointer(help->helper, helper);
}
__nf_ct_try_assign_helper(ct, GFP_ATOMIC);
NF_CT_STAT_INC(net, new);
}
@ -770,7 +764,6 @@ void nf_conntrack_alter_reply(struct nf_conn *ct,
const struct nf_conntrack_tuple *newreply)
{
struct nf_conn_help *help = nfct_help(ct);
struct nf_conntrack_helper *helper;
/* Should be unconfirmed, so not in hash table yet */
NF_CT_ASSERT(!nf_ct_is_confirmed(ct));
@ -783,23 +776,7 @@ void nf_conntrack_alter_reply(struct nf_conn *ct,
return;
rcu_read_lock();
helper = __nf_ct_helper_find(newreply);
if (helper == NULL) {
if (help)
rcu_assign_pointer(help->helper, NULL);
goto out;
}
if (help == NULL) {
help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
if (help == NULL)
goto out;
} else {
memset(&help->help, 0, sizeof(help->help));
}
rcu_assign_pointer(help->helper, helper);
out:
__nf_ct_try_assign_helper(ct, GFP_ATOMIC);
rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(nf_conntrack_alter_reply);
@ -994,8 +971,20 @@ void nf_ct_iterate_cleanup(struct net *net,
}
EXPORT_SYMBOL_GPL(nf_ct_iterate_cleanup);
struct __nf_ct_flush_report {
u32 pid;
int report;
};
static int kill_all(struct nf_conn *i, void *data)
{
struct __nf_ct_flush_report *fr = (struct __nf_ct_flush_report *)data;
/* get_next_corpse sets the dying bit for us */
nf_conntrack_event_report(IPCT_DESTROY,
i,
fr->pid,
fr->report);
return 1;
}
@ -1009,9 +998,13 @@ void nf_ct_free_hashtable(struct hlist_head *hash, int vmalloced, unsigned int s
}
EXPORT_SYMBOL_GPL(nf_ct_free_hashtable);
void nf_conntrack_flush(struct net *net)
void nf_conntrack_flush(struct net *net, u32 pid, int report)
{
nf_ct_iterate_cleanup(net, kill_all, NULL);
struct __nf_ct_flush_report fr = {
.pid = pid,
.report = report,
};
nf_ct_iterate_cleanup(net, kill_all, &fr);
}
EXPORT_SYMBOL_GPL(nf_conntrack_flush);
@ -1027,7 +1020,7 @@ static void nf_conntrack_cleanup_net(struct net *net)
nf_ct_event_cache_flush(net);
nf_conntrack_ecache_fini(net);
i_see_dead_people:
nf_conntrack_flush(net);
nf_conntrack_flush(net, 0, 0);
if (atomic_read(&net->ct.count) != 0) {
schedule();
goto i_see_dead_people;

14
net/netfilter/nf_conntrack_ecache.c
View File

@ -35,9 +35,17 @@ static inline void
__nf_ct_deliver_cached_events(struct nf_conntrack_ecache *ecache)
{
if (nf_ct_is_confirmed(ecache->ct) && !nf_ct_is_dying(ecache->ct)
&& ecache->events)
atomic_notifier_call_chain(&nf_conntrack_chain, ecache->events,
ecache->ct);
&& ecache->events) {
struct nf_ct_event item = {
.ct = ecache->ct,
.pid = 0,
.report = 0
};
atomic_notifier_call_chain(&nf_conntrack_chain,
ecache->events,
&item);
}
ecache->events = 0;
nf_ct_put(ecache->ct);

43
net/netfilter/nf_conntrack_expect.c
View File

@ -362,7 +362,7 @@ static inline int refresh_timer(struct nf_conntrack_expect *i)
return 1;
}
int nf_ct_expect_related(struct nf_conntrack_expect *expect)
static inline int __nf_ct_expect_check(struct nf_conntrack_expect *expect)
{
const struct nf_conntrack_expect_policy *p;
struct nf_conntrack_expect *i;
@ -371,11 +371,8 @@ int nf_ct_expect_related(struct nf_conntrack_expect *expect)
struct net *net = nf_ct_exp_net(expect);
struct hlist_node *n;
unsigned int h;
int ret;
int ret = 0;
NF_CT_ASSERT(master_help);
spin_lock_bh(&nf_conntrack_lock);
if (!master_help->helper) {
ret = -ESHUTDOWN;
goto out;
@ -409,18 +406,50 @@ int nf_ct_expect_related(struct nf_conntrack_expect *expect)
printk(KERN_WARNING
"nf_conntrack: expectation table full\n");
ret = -EMFILE;
goto out;
}
out:
return ret;
}
int nf_ct_expect_related(struct nf_conntrack_expect *expect)
{
int ret;
spin_lock_bh(&nf_conntrack_lock);
ret = __nf_ct_expect_check(expect);
if (ret < 0)
goto out;
nf_ct_expect_insert(expect);
atomic_inc(&expect->use);
spin_unlock_bh(&nf_conntrack_lock);
nf_ct_expect_event(IPEXP_NEW, expect);
ret = 0;
nf_ct_expect_put(expect);
return ret;
out:
spin_unlock_bh(&nf_conntrack_lock);
return ret;
}
EXPORT_SYMBOL_GPL(nf_ct_expect_related);
int nf_ct_expect_related_report(struct nf_conntrack_expect *expect,
u32 pid, int report)
{
int ret;
spin_lock_bh(&nf_conntrack_lock);
ret = __nf_ct_expect_check(expect);
if (ret < 0)
goto out;
nf_ct_expect_insert(expect);
out:
spin_unlock_bh(&nf_conntrack_lock);
if (ret == 0)
nf_ct_expect_event_report(IPEXP_NEW, expect, pid, report);
return ret;
}
EXPORT_SYMBOL_GPL(nf_ct_expect_related_report);
#ifdef CONFIG_PROC_FS
struct ct_expect_iter_state {
struct seq_net_private p;

9
net/netfilter/nf_conntrack_ftp.c
View File

@ -29,6 +29,7 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("Rusty Russell <rusty@rustcorp.com.au>");
MODULE_DESCRIPTION("ftp connection tracking helper");
MODULE_ALIAS("ip_conntrack_ftp");
MODULE_ALIAS_NFCT_HELPER("ftp");
/* This is slow, but it's simple. --RR */
static char *ftp_buffer;
@ -357,7 +358,7 @@ static int help(struct sk_buff *skb,
int ret;
u32 seq;
int dir = CTINFO2DIR(ctinfo);
unsigned int matchlen, matchoff;
unsigned int uninitialized_var(matchlen), uninitialized_var(matchoff);
struct nf_ct_ftp_master *ct_ftp_info = &nfct_help(ct)->help.ct_ftp_info;
struct nf_conntrack_expect *exp;
union nf_inet_addr *daddr;
@ -427,10 +428,8 @@ static int help(struct sk_buff *skb,
connection tracking, not packet filtering.
However, it is necessary for accurate tracking in
this case. */
if (net_ratelimit())
printk("conntrack_ftp: partial %s %u+%u\n",
search[dir][i].pattern,
ntohl(th->seq), datalen);
pr_debug("conntrack_ftp: partial %s %u+%u\n",
search[dir][i].pattern, ntohl(th->seq), datalen);
ret = NF_DROP;
goto out;
} else if (found == 0) { /* No match */

1
net/netfilter/nf_conntrack_h323_main.c
View File

@ -1827,3 +1827,4 @@ MODULE_AUTHOR("Jing Min Zhao <zhaojingmin@users.sourceforge.net>");
MODULE_DESCRIPTION("H.323 connection tracking helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_conntrack_h323");
MODULE_ALIAS_NFCT_HELPER("h323");

32
net/netfilter/nf_conntrack_helper.c
View File

@ -45,7 +45,7 @@ static unsigned int helper_hash(const struct nf_conntrack_tuple *tuple)
(__force __u16)tuple->src.u.all) % nf_ct_helper_hsize;
}
struct nf_conntrack_helper *
static struct nf_conntrack_helper *
__nf_ct_helper_find(const struct nf_conntrack_tuple *tuple)
{
struct nf_conntrack_helper *helper;
@ -63,7 +63,6 @@ __nf_ct_helper_find(const struct nf_conntrack_tuple *tuple)
}
return NULL;
}
EXPORT_SYMBOL_GPL(__nf_ct_helper_find);
struct nf_conntrack_helper *
__nf_conntrack_helper_find_byname(const char *name)
@ -95,6 +94,35 @@ struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct, gfp_t gfp)
}
EXPORT_SYMBOL_GPL(nf_ct_helper_ext_add);
int __nf_ct_try_assign_helper(struct nf_conn *ct, gfp_t flags)
{
int ret = 0;
struct nf_conntrack_helper *helper;
struct nf_conn_help *help = nfct_help(ct);
helper = __nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
if (helper == NULL) {
if (help)
rcu_assign_pointer(help->helper, NULL);
goto out;
}
if (help == NULL) {
help = nf_ct_helper_ext_add(ct, flags);
if (help == NULL) {
ret = -ENOMEM;
goto out;
}
} else {
memset(&help->help, 0, sizeof(help->help));
}
rcu_assign_pointer(help->helper, helper);
out:
return ret;
}
EXPORT_SYMBOL_GPL(__nf_ct_try_assign_helper);
static inline int unhelp(struct nf_conntrack_tuple_hash *i,
const struct nf_conntrack_helper *me)
{

1
net/netfilter/nf_conntrack_irc.c
View File

@ -41,6 +41,7 @@ MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
MODULE_DESCRIPTION("IRC (DCC) connection tracking helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_conntrack_irc");
MODULE_ALIAS_NFCT_HELPER("irc");
module_param_array(ports, ushort, &ports_c, 0400);
MODULE_PARM_DESC(ports, "port numbers of IRC servers");

1
net/netfilter/nf_conntrack_netbios_ns.c
View File

@ -37,6 +37,7 @@ MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_DESCRIPTION("NetBIOS name service broadcast connection tracking helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_conntrack_netbios_ns");
MODULE_ALIAS_NFCT_HELPER("netbios_ns");
static unsigned int timeout __read_mostly = 3;
module_param(timeout, uint, 0400);

201
net/netfilter/nf_conntrack_netlink.c
View File

@ -105,16 +105,14 @@ ctnetlink_dump_tuples(struct sk_buff *skb,
struct nf_conntrack_l3proto *l3proto;
struct nf_conntrack_l4proto *l4proto;
l3proto = nf_ct_l3proto_find_get(tuple->src.l3num);
l3proto = __nf_ct_l3proto_find(tuple->src.l3num);
ret = ctnetlink_dump_tuples_ip(skb, tuple, l3proto);
nf_ct_l3proto_put(l3proto);
if (unlikely(ret < 0))
return ret;
l4proto = nf_ct_l4proto_find_get(tuple->src.l3num, tuple->dst.protonum);
l4proto = __nf_ct_l4proto_find(tuple->src.l3num, tuple->dst.protonum);
ret = ctnetlink_dump_tuples_proto(skb, tuple, l4proto);
nf_ct_l4proto_put(l4proto);
return ret;
}
@ -151,11 +149,9 @@ ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct nf_conn *ct)
struct nlattr *nest_proto;
int ret;
l4proto = nf_ct_l4proto_find_get(nf_ct_l3num(ct), nf_ct_protonum(ct));
if (!l4proto->to_nlattr) {
nf_ct_l4proto_put(l4proto);
l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
if (!l4proto->to_nlattr)
return 0;
}
nest_proto = nla_nest_start(skb, CTA_PROTOINFO | NLA_F_NESTED);
if (!nest_proto)
@ -163,14 +159,11 @@ ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct nf_conn *ct)
ret = l4proto->to_nlattr(skb, nest_proto, ct);
nf_ct_l4proto_put(l4proto);
nla_nest_end(skb, nest_proto);
return ret;
nla_put_failure:
nf_ct_l4proto_put(l4proto);
return -1;
}
@ -184,7 +177,6 @@ ctnetlink_dump_helpinfo(struct sk_buff *skb, const struct nf_conn *ct)
if (!help)
return 0;
rcu_read_lock();
helper = rcu_dereference(help->helper);
if (!helper)
goto out;
@ -199,11 +191,9 @@ ctnetlink_dump_helpinfo(struct sk_buff *skb, const struct nf_conn *ct)
nla_nest_end(skb, nest_helper);
out:
rcu_read_unlock();
return 0;
nla_put_failure:
rcu_read_unlock();
return -1;
}
@ -420,7 +410,8 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
struct nlmsghdr *nlh;
struct nfgenmsg *nfmsg;
struct nlattr *nest_parms;
struct nf_conn *ct = (struct nf_conn *)ptr;
struct nf_ct_event *item = (struct nf_ct_event *)ptr;
struct nf_conn *ct = item->ct;
struct sk_buff *skb;
unsigned int type;
sk_buff_data_t b;
@ -453,7 +444,7 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
b = skb->tail;
type |= NFNL_SUBSYS_CTNETLINK << 8;
nlh = NLMSG_PUT(skb, 0, 0, type, sizeof(struct nfgenmsg));
nlh = NLMSG_PUT(skb, item->pid, 0, type, sizeof(struct nfgenmsg));
nfmsg = NLMSG_DATA(nlh);
nlh->nlmsg_flags = flags;
@ -461,6 +452,7 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
nfmsg->version = NFNETLINK_V0;
nfmsg->res_id = 0;
rcu_read_lock();
nest_parms = nla_nest_start(skb, CTA_TUPLE_ORIG | NLA_F_NESTED);
if (!nest_parms)
goto nla_put_failure;
@ -517,13 +509,15 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
&& ctnetlink_dump_mark(skb, ct) < 0)
goto nla_put_failure;
#endif
rcu_read_unlock();
nlh->nlmsg_len = skb->tail - b;
nfnetlink_send(skb, 0, group, 0);
nfnetlink_send(skb, item->pid, group, item->report);
return NOTIFY_DONE;
nlmsg_failure:
nla_put_failure:
rcu_read_unlock();
nlmsg_failure:
kfree_skb(skb);
return NOTIFY_DONE;
}
@ -729,7 +723,9 @@ ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb,
err = ctnetlink_parse_tuple(cda, &tuple, CTA_TUPLE_REPLY, u3);
else {
/* Flush the whole table */
nf_conntrack_flush(&init_net);
nf_conntrack_flush(&init_net,
NETLINK_CB(skb).pid,
nlmsg_report(nlh));
return 0;
}
@ -750,6 +746,14 @@ ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb,
}
}
nf_conntrack_event_report(IPCT_DESTROY,
ct,
NETLINK_CB(skb).pid,
nlmsg_report(nlh));
/* death_by_timeout would report the event again */
set_bit(IPS_DYING_BIT, &ct->status);
nf_ct_kill(ct);
nf_ct_put(ct);
@ -795,8 +799,10 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb,
return -ENOMEM;
}
rcu_read_lock();
err = ctnetlink_fill_info(skb2, NETLINK_CB(skb).pid, nlh->nlmsg_seq,
IPCTNL_MSG_CT_NEW, 1, ct);
rcu_read_unlock();
nf_ct_put(ct);
if (err <= 0)
goto free;
@ -922,8 +928,22 @@ ctnetlink_change_helper(struct nf_conn *ct, struct nlattr *cda[])
}
helper = __nf_conntrack_helper_find_byname(helpname);
if (helper == NULL)
if (helper == NULL) {
#ifdef CONFIG_MODULES
spin_unlock_bh(&nf_conntrack_lock);
if (request_module("nfct-helper-%s", helpname) < 0) {
spin_lock_bh(&nf_conntrack_lock);
return -EOPNOTSUPP;
}
spin_lock_bh(&nf_conntrack_lock);
helper = __nf_conntrack_helper_find_byname(helpname);
if (helper)
return -EAGAIN;
#endif
return -EOPNOTSUPP;
}
if (help) {
if (help->helper == helper)
@ -1079,15 +1099,38 @@ ctnetlink_change_conntrack(struct nf_conn *ct, struct nlattr *cda[])
return 0;
}
static inline void
ctnetlink_event_report(struct nf_conn *ct, u32 pid, int report)
{
unsigned int events = 0;
if (test_bit(IPS_EXPECTED_BIT, &ct->status))
events |= IPCT_RELATED;
else
events |= IPCT_NEW;
nf_conntrack_event_report(IPCT_STATUS |
IPCT_HELPER |
IPCT_REFRESH |
IPCT_PROTOINFO |
IPCT_NATSEQADJ |
IPCT_MARK |
events,
ct,
pid,
report);
}
static int
ctnetlink_create_conntrack(struct nlattr *cda[],
struct nf_conntrack_tuple *otuple,
struct nf_conntrack_tuple *rtuple,
struct nf_conn *master_ct)
struct nf_conn *master_ct,
u32 pid,
int report)
{
struct nf_conn *ct;
int err = -EINVAL;
struct nf_conn_help *help;
struct nf_conntrack_helper *helper;
ct = nf_conntrack_alloc(&init_net, otuple, rtuple, GFP_ATOMIC);
@ -1102,16 +1145,55 @@ ctnetlink_create_conntrack(struct nlattr *cda[],
ct->status |= IPS_CONFIRMED;
rcu_read_lock();
helper = __nf_ct_helper_find(rtuple);
if (helper) {
help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
if (help == NULL) {
if (cda[CTA_HELP]) {
char *helpname;
err = ctnetlink_parse_help(cda[CTA_HELP], &helpname);
if (err < 0) {
rcu_read_unlock();
goto err;
}
helper = __nf_conntrack_helper_find_byname(helpname);
if (helper == NULL) {
rcu_read_unlock();
#ifdef CONFIG_MODULES
if (request_module("nfct-helper-%s", helpname) < 0) {
err = -EOPNOTSUPP;
goto err;
}
rcu_read_lock();
helper = __nf_conntrack_helper_find_byname(helpname);
if (helper) {
rcu_read_unlock();
err = -EAGAIN;
goto err;
}
rcu_read_unlock();
#endif
err = -EOPNOTSUPP;
goto err;
} else {
struct nf_conn_help *help;
help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
if (help == NULL) {
rcu_read_unlock();
err = -ENOMEM;
goto err;
}
/* not in hash table yet so not strictly necessary */
rcu_assign_pointer(help->helper, helper);
}
} else {
/* try an implicit helper assignation */
err = __nf_ct_try_assign_helper(ct, GFP_ATOMIC);
if (err < 0) {
rcu_read_unlock();
err = -ENOMEM;
goto err;
}
/* not in hash table yet so not strictly necessary */
rcu_assign_pointer(help->helper, helper);
}
if (cda[CTA_STATUS]) {
@ -1151,9 +1233,12 @@ ctnetlink_create_conntrack(struct nlattr *cda[],
ct->master = master_ct;
}
nf_conntrack_get(&ct->ct_general);
add_timer(&ct->timeout);
nf_conntrack_hash_insert(ct);
rcu_read_unlock();
ctnetlink_event_report(ct, pid, report);
nf_ct_put(ct);
return 0;
@ -1209,7 +1294,7 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
goto out_unlock;
}
master_ct = nf_ct_tuplehash_to_ctrack(master_h);
atomic_inc(&master_ct->ct_general.use);
nf_conntrack_get(&master_ct->ct_general);
}
err = -ENOENT;
@ -1217,9 +1302,10 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
err = ctnetlink_create_conntrack(cda,
&otuple,
&rtuple,
master_ct);
master_ct,
NETLINK_CB(skb).pid,
nlmsg_report(nlh));
spin_unlock_bh(&nf_conntrack_lock);
if (err < 0 && master_ct)
nf_ct_put(master_ct);
@ -1231,6 +1317,8 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
* so there's no need to increase the refcount */
err = -EEXIST;
if (!(nlh->nlmsg_flags & NLM_F_EXCL)) {
struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(h);
/* we only allow nat config for new conntracks */
if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST]) {
err = -EOPNOTSUPP;
@ -1241,8 +1329,19 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
err = -EOPNOTSUPP;
goto out_unlock;
}
err = ctnetlink_change_conntrack(nf_ct_tuplehash_to_ctrack(h),
cda);
err = ctnetlink_change_conntrack(ct, cda);
if (err == 0) {
nf_conntrack_get(&ct->ct_general);
spin_unlock_bh(&nf_conntrack_lock);
ctnetlink_event_report(ct,
NETLINK_CB(skb).pid,
nlmsg_report(nlh));
nf_ct_put(ct);
} else
spin_unlock_bh(&nf_conntrack_lock);
return err;
}
out_unlock:
@ -1293,16 +1392,14 @@ ctnetlink_exp_dump_mask(struct sk_buff *skb,
if (!nest_parms)
goto nla_put_failure;
l3proto = nf_ct_l3proto_find_get(tuple->src.l3num);
l3proto = __nf_ct_l3proto_find(tuple->src.l3num);
ret = ctnetlink_dump_tuples_ip(skb, &m, l3proto);
nf_ct_l3proto_put(l3proto);
if (unlikely(ret < 0))
goto nla_put_failure;
l4proto = nf_ct_l4proto_find_get(tuple->src.l3num, tuple->dst.protonum);
l4proto = __nf_ct_l4proto_find(tuple->src.l3num, tuple->dst.protonum);
ret = ctnetlink_dump_tuples_proto(skb, &m, l4proto);
nf_ct_l4proto_put(l4proto);
if (unlikely(ret < 0))
goto nla_put_failure;
@ -1379,7 +1476,8 @@ static int ctnetlink_expect_event(struct notifier_block *this,
{
struct nlmsghdr *nlh;
struct nfgenmsg *nfmsg;
struct nf_conntrack_expect *exp = (struct nf_conntrack_expect *)ptr;
struct nf_exp_event *item = (struct nf_exp_event *)ptr;
struct nf_conntrack_expect *exp = item->exp;
struct sk_buff *skb;
unsigned int type;
sk_buff_data_t b;
@ -1401,7 +1499,7 @@ static int ctnetlink_expect_event(struct notifier_block *this,
b = skb->tail;
type |= NFNL_SUBSYS_CTNETLINK_EXP << 8;
nlh = NLMSG_PUT(skb, 0, 0, type, sizeof(struct nfgenmsg));
nlh = NLMSG_PUT(skb, item->pid, 0, type, sizeof(struct nfgenmsg));
nfmsg = NLMSG_DATA(nlh);
nlh->nlmsg_flags = flags;
@ -1409,15 +1507,18 @@ static int ctnetlink_expect_event(struct notifier_block *this,
nfmsg->version = NFNETLINK_V0;
nfmsg->res_id = 0;
rcu_read_lock();
if (ctnetlink_exp_dump_expect(skb, exp) < 0)
goto nla_put_failure;
rcu_read_unlock();
nlh->nlmsg_len = skb->tail - b;
nfnetlink_send(skb, 0, NFNLGRP_CONNTRACK_EXP_NEW, 0);
nfnetlink_send(skb, item->pid, NFNLGRP_CONNTRACK_EXP_NEW, item->report);
return NOTIFY_DONE;
nlmsg_failure:
nla_put_failure:
rcu_read_unlock();
nlmsg_failure:
kfree_skb(skb);
return NOTIFY_DONE;
}
@ -1521,9 +1622,11 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
if (!skb2)
goto out;
rcu_read_lock();
err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).pid,
nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW,
1, exp);
rcu_read_unlock();
if (err <= 0)
goto free;
@ -1624,7 +1727,7 @@ ctnetlink_change_expect(struct nf_conntrack_expect *x, struct nlattr *cda[])
}
static int
ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3)
ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3, u32 pid, int report)
{
struct nf_conntrack_tuple tuple, mask, master_tuple;
struct nf_conntrack_tuple_hash *h = NULL;
@ -1653,7 +1756,7 @@ ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3)
if (!help || !help->helper) {
/* such conntrack hasn't got any helper, abort */
err = -EINVAL;
err = -EOPNOTSUPP;
goto out;
}
@ -1671,7 +1774,7 @@ ctnetlink_create_expect(struct nlattr *cda[], u_int8_t u3)
memcpy(&exp->mask.src.u3, &mask.src.u3, sizeof(exp->mask.src.u3));
exp->mask.src.u.all = mask.src.u.all;
err = nf_ct_expect_related(exp);
err = nf_ct_expect_related_report(exp, pid, report);
nf_ct_expect_put(exp);
out:
@ -1704,8 +1807,12 @@ ctnetlink_new_expect(struct sock *ctnl, struct sk_buff *skb,
if (!exp) {
spin_unlock_bh(&nf_conntrack_lock);
err = -ENOENT;
if (nlh->nlmsg_flags & NLM_F_CREATE)
err = ctnetlink_create_expect(cda, u3);
if (nlh->nlmsg_flags & NLM_F_CREATE) {
err = ctnetlink_create_expect(cda,
u3,
NETLINK_CB(skb).pid,
nlmsg_report(nlh));
}
return err;
}

1
net/netfilter/nf_conntrack_pptp.c
View File

@ -37,6 +37,7 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
MODULE_DESCRIPTION("Netfilter connection tracking helper module for PPTP");
MODULE_ALIAS("ip_conntrack_pptp");
MODULE_ALIAS_NFCT_HELPER("pptp");
static DEFINE_SPINLOCK(nf_pptp_lock);

2
net/netfilter/nf_conntrack_proto_gre.c
View File

@ -341,7 +341,7 @@ static int __init nf_ct_proto_gre_init(void)
return rv;
}
static void nf_ct_proto_gre_fini(void)
static void __exit nf_ct_proto_gre_fini(void)
{
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_gre4);
unregister_pernet_gen_subsys(proto_gre_net_id, &proto_gre_net_ops);

2
net/netfilter/nf_conntrack_proto_sctp.c
View File

@ -317,7 +317,7 @@ static int sctp_packet(struct nf_conn *ct,
goto out;
}
old_state = new_state = SCTP_CONNTRACK_MAX;
old_state = new_state = SCTP_CONNTRACK_NONE;
write_lock_bh(&sctp_lock);
for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
/* Special cases of Verification tag check (Sec 8.5.1) */

1
net/netfilter/nf_conntrack_sane.c
View File

@ -30,6 +30,7 @@
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Michal Schmidt <mschmidt@redhat.com>");
MODULE_DESCRIPTION("SANE connection tracking helper");
MODULE_ALIAS_NFCT_HELPER("sane");
static char *sane_buffer;

1
net/netfilter/nf_conntrack_sip.c
View File

@ -28,6 +28,7 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("Christian Hentschel <chentschel@arnet.com.ar>");
MODULE_DESCRIPTION("SIP connection tracking helper");
MODULE_ALIAS("ip_conntrack_sip");
MODULE_ALIAS_NFCT_HELPER("sip");
#define MAX_PORTS 8
static unsigned short ports[MAX_PORTS];

1
net/netfilter/nf_conntrack_tftp.c
View File

@ -22,6 +22,7 @@ MODULE_AUTHOR("Magnus Boden <mb@ozaba.mine.nu>");
MODULE_DESCRIPTION("TFTP connection tracking helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_conntrack_tftp");
MODULE_ALIAS_NFCT_HELPER("tftp");
#define MAX_PORTS 8
static unsigned short ports[MAX_PORTS];

4
net/netfilter/nfnetlink_log.c
View File

@ -30,6 +30,7 @@
#include <linux/random.h>
#include <net/sock.h>
#include <net/netfilter/nf_log.h>
#include <net/netfilter/nfnetlink_log.h>
#include <asm/atomic.h>
@ -533,7 +534,7 @@ static struct nf_loginfo default_loginfo = {
};
/* log handler for internal netfilter logging api */
static void
void
nfulnl_log_packet(u_int8_t pf,
unsigned int hooknum,
const struct sk_buff *skb,
@ -648,6 +649,7 @@ alloc_failure:
/* FIXME: statistics */
goto unlock_and_release;
}
EXPORT_SYMBOL_GPL(nfulnl_log_packet);
static int
nfulnl_rcv_nl_event(struct notifier_block *this,

5
net/netfilter/xt_NFLOG.c
View File

@ -13,6 +13,7 @@
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_NFLOG.h>
#include <net/netfilter/nf_log.h>
#include <net/netfilter/nfnetlink_log.h>
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_DESCRIPTION("Xtables: packet logging to netlink using NFLOG");
@ -31,8 +32,8 @@ nflog_tg(struct sk_buff *skb, const struct xt_target_param *par)
li.u.ulog.group = info->group;
li.u.ulog.qthreshold = info->threshold;
nf_log_packet(par->family, par->hooknum, skb, par->in,
par->out, &li, "%s", info->prefix);
nfulnl_log_packet(par->family, par->hooknum, skb, par->in,
par->out, &li, info->prefix);
return XT_CONTINUE;
}

22
net/netfilter/xt_recent.c
View File

@ -72,9 +72,6 @@ struct recent_entry {
struct recent_table {
struct list_head list;
char name[XT_RECENT_NAME_LEN];
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_old, *proc;
#endif
unsigned int refcnt;
unsigned int entries;
struct list_head lru_list;
@ -284,6 +281,9 @@ static bool recent_mt_check(const struct xt_mtchk_param *par)
{
const struct xt_recent_mtinfo *info = par->matchinfo;
struct recent_table *t;
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *pde;
#endif
unsigned i;
bool ret = false;
@ -318,25 +318,25 @@ static bool recent_mt_check(const struct xt_mtchk_param *par)
for (i = 0; i < ip_list_hash_size; i++)
INIT_LIST_HEAD(&t->iphash[i]);
#ifdef CONFIG_PROC_FS
t->proc = proc_create_data(t->name, ip_list_perms, recent_proc_dir,
pde = proc_create_data(t->name, ip_list_perms, recent_proc_dir,
&recent_mt_fops, t);
if (t->proc == NULL) {
if (pde == NULL) {
kfree(t);
goto out;
}
pde->uid = ip_list_uid;
pde->gid = ip_list_gid;
#ifdef CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT
t->proc_old = proc_create_data(t->name, ip_list_perms, proc_old_dir,
pde = proc_create_data(t->name, ip_list_perms, proc_old_dir,
&recent_old_fops, t);
if (t->proc_old == NULL) {
if (pde == NULL) {
remove_proc_entry(t->name, proc_old_dir);
kfree(t);
goto out;
}
t->proc_old->uid = ip_list_uid;
t->proc_old->gid = ip_list_gid;
pde->uid = ip_list_uid;
pde->gid = ip_list_gid;
#endif
t->proc->uid = ip_list_uid;
t->proc->gid = ip_list_gid;
#endif
spin_lock_bh(&recent_lock);
list_add_tail(&t->list, &tables);