[NETFILTER]: ip6_tables: netns preparation

[powerpc.git] / net / ipv6 / netfilter / ip6_tables.c

diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index dd7860f..2453dfd 100644 (file)
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -320,7 +320,7 @@ static void trace_packet(struct sk_buff *skb,
                         unsigned int hook,
                         const struct net_device *in,
                         const struct net_device *out,
-                        char *tablename,
+                        const char *tablename,
                         struct xt_table_info *private,
                         struct ip6t_entry *e)
 {
@@ -1118,7 +1118,7 @@ static int compat_table_info(const struct xt_table_info *info,
 }
 #endif
 
-static int get_info(void __user *user, int *len, int compat)
+static int get_info(struct net *net, void __user *user, int *len, int compat)
 {
        char name[IP6T_TABLE_MAXNAMELEN];
        struct xt_table *t;
@@ -1138,7 +1138,7 @@ static int get_info(void __user *user, int *len, int compat)
        if (compat)
                xt_compat_lock(AF_INET6);
 #endif
-       t = try_then_request_module(xt_find_table_lock(AF_INET6, name),
+       t = try_then_request_module(xt_find_table_lock(net, AF_INET6, name),
                                    "ip6table_%s", name);
        if (t && !IS_ERR(t)) {
                struct ip6t_getinfo info;
@@ -1178,7 +1178,7 @@ static int get_info(void __user *user, int *len, int compat)
 }
 
 static int
-get_entries(struct ip6t_get_entries __user *uptr, int *len)
+get_entries(struct net *net, struct ip6t_get_entries __user *uptr, int *len)
 {
        int ret;
        struct ip6t_get_entries get;
@@ -1196,7 +1196,7 @@ get_entries(struct ip6t_get_entries __user *uptr, int *len)
                return -EINVAL;
        }
 
-       t = xt_find_table_lock(AF_INET6, get.name);
+       t = xt_find_table_lock(net, AF_INET6, get.name);
        if (t && !IS_ERR(t)) {
                struct xt_table_info *private = t->private;
                duprintf("t->private->number = %u\n", private->number);
@@ -1217,7 +1217,7 @@ get_entries(struct ip6t_get_entries __user *uptr, int *len)
 }
 
 static int
-__do_replace(const char *name, unsigned int valid_hooks,
+__do_replace(struct net *net, const char *name, unsigned int valid_hooks,
             struct xt_table_info *newinfo, unsigned int num_counters,
             void __user *counters_ptr)
 {
@@ -1235,7 +1235,7 @@ __do_replace(const char *name, unsigned int valid_hooks,
                goto out;
        }
 
-       t = try_then_request_module(xt_find_table_lock(AF_INET6, name),
+       t = try_then_request_module(xt_find_table_lock(net, AF_INET6, name),
                                    "ip6table_%s", name);
        if (!t || IS_ERR(t)) {
                ret = t ? PTR_ERR(t) : -ENOENT;
@@ -1288,7 +1288,7 @@ __do_replace(const char *name, unsigned int valid_hooks,
 }
 
 static int
-do_replace(void __user *user, unsigned int len)
+do_replace(struct net *net, void __user *user, unsigned int len)
 {
        int ret;
        struct ip6t_replace tmp;
@@ -1322,7 +1322,7 @@ do_replace(void __user *user, unsigned int len)
 
        duprintf("ip_tables: Translated table\n");
 
-       ret = __do_replace(tmp.name, tmp.valid_hooks, newinfo,
+       ret = __do_replace(net, tmp.name, tmp.valid_hooks, newinfo,
                           tmp.num_counters, tmp.counters);
        if (ret)
                goto free_newinfo_untrans;
@@ -1358,7 +1358,8 @@ add_counter_to_entry(struct ip6t_entry *e,
 }
 
 static int
-do_add_counters(void __user *user, unsigned int len, int compat)
+do_add_counters(struct net *net, void __user *user, unsigned int len,
+               int compat)
 {
        unsigned int i;
        struct xt_counters_info tmp;
@@ -1410,7 +1411,7 @@ do_add_counters(void __user *user, unsigned int len, int compat)
                goto free;
        }
 
-       t = xt_find_table_lock(AF_INET6, name);
+       t = xt_find_table_lock(net, AF_INET6, name);
        if (!t || IS_ERR(t)) {
                ret = t ? PTR_ERR(t) : -ENOENT;
                goto free;
@@ -1815,7 +1816,7 @@ out_unlock:
 }
 
 static int
-compat_do_replace(void __user *user, unsigned int len)
+compat_do_replace(struct net *net, void __user *user, unsigned int len)
 {
        int ret;
        struct compat_ip6t_replace tmp;
@@ -1852,7 +1853,7 @@ compat_do_replace(void __user *user, unsigned int len)
 
        duprintf("compat_do_replace: Translated table\n");
 
-       ret = __do_replace(tmp.name, tmp.valid_hooks, newinfo,
+       ret = __do_replace(net, tmp.name, tmp.valid_hooks, newinfo,
                           tmp.num_counters, compat_ptr(tmp.counters));
        if (ret)
                goto free_newinfo_untrans;
@@ -1876,11 +1877,11 @@ compat_do_ip6t_set_ctl(struct sock *sk, int cmd, void __user *user,
 
        switch (cmd) {
        case IP6T_SO_SET_REPLACE:
-               ret = compat_do_replace(user, len);
+               ret = compat_do_replace(sk->sk_net, user, len);
                break;
 
        case IP6T_SO_SET_ADD_COUNTERS:
-               ret = do_add_counters(user, len, 1);
+               ret = do_add_counters(sk->sk_net, user, len, 1);
                break;
 
        default:
@@ -1929,7 +1930,8 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table,
 }
 
 static int
-compat_get_entries(struct compat_ip6t_get_entries __user *uptr, int *len)
+compat_get_entries(struct net *net, struct compat_ip6t_get_entries __user *uptr,
+                  int *len)
 {
        int ret;
        struct compat_ip6t_get_entries get;
@@ -1950,7 +1952,7 @@ compat_get_entries(struct compat_ip6t_get_entries __user *uptr, int *len)
        }
 
        xt_compat_lock(AF_INET6);
-       t = xt_find_table_lock(AF_INET6, get.name);
+       t = xt_find_table_lock(net, AF_INET6, get.name);
        if (t && !IS_ERR(t)) {
                struct xt_table_info *private = t->private;
                struct xt_table_info info;
@@ -1986,10 +1988,10 @@ compat_do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
 
        switch (cmd) {
        case IP6T_SO_GET_INFO:
-               ret = get_info(user, len, 1);
+               ret = get_info(sk->sk_net, user, len, 1);
                break;
        case IP6T_SO_GET_ENTRIES:
-               ret = compat_get_entries(user, len);
+               ret = compat_get_entries(sk->sk_net, user, len);
                break;
        default:
                ret = do_ip6t_get_ctl(sk, cmd, user, len);
@@ -2008,11 +2010,11 @@ do_ip6t_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len)
 
        switch (cmd) {
        case IP6T_SO_SET_REPLACE:
-               ret = do_replace(user, len);
+               ret = do_replace(sk->sk_net, user, len);
                break;
 
        case IP6T_SO_SET_ADD_COUNTERS:
-               ret = do_add_counters(user, len, 0);
+               ret = do_add_counters(sk->sk_net, user, len, 0);
                break;
 
        default:
@@ -2033,11 +2035,11 @@ do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
 
        switch (cmd) {
        case IP6T_SO_GET_INFO:
-               ret = get_info(user, len, 0);
+               ret = get_info(sk->sk_net, user, len, 0);
                break;
 
        case IP6T_SO_GET_ENTRIES:
-               ret = get_entries(user, len);
+               ret = get_entries(sk->sk_net, user, len);
                break;
 
        case IP6T_SO_GET_REVISION_MATCH:
@@ -2074,17 +2076,21 @@ do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
        return ret;
 }
 
-int ip6t_register_table(struct xt_table *table, const struct ip6t_replace *repl)
+struct xt_table *ip6t_register_table(struct net *net, struct xt_table *table,
+                                    const struct ip6t_replace *repl)
 {
        int ret;
        struct xt_table_info *newinfo;
        struct xt_table_info bootstrap
                = { 0, 0, 0, { 0 }, { 0 }, { } };
        void *loc_cpu_entry;
+       struct xt_table *new_table;
 
        newinfo = xt_alloc_table_info(repl->size);
-       if (!newinfo)
-               return -ENOMEM;
+       if (!newinfo) {
+               ret = -ENOMEM;
+               goto out;
+       }
 
        /* choose the copy on our node/cpu, but dont care about preemption */
        loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
@@ -2095,18 +2101,20 @@ int ip6t_register_table(struct xt_table *table, const struct ip6t_replace *repl)
                              repl->num_entries,
                              repl->hook_entry,
                              repl->underflow);
-       if (ret != 0) {
-               xt_free_table_info(newinfo);
-               return ret;
-       }
+       if (ret != 0)
+               goto out_free;
 
-       ret = xt_register_table(table, &bootstrap, newinfo);
-       if (ret != 0) {
-               xt_free_table_info(newinfo);
-               return ret;
+       new_table = xt_register_table(net, table, &bootstrap, newinfo);
+       if (IS_ERR(new_table)) {
+               ret = PTR_ERR(new_table);
+               goto out_free;
        }
+       return new_table;
 
-       return 0;
+out_free:
+       xt_free_table_info(newinfo);
+out:
+       return ERR_PTR(ret);
 }
 
 void ip6t_unregister_table(struct xt_table *table)