diff options
Diffstat (limited to 'net/ipv6/netfilter/ip6_tables.c')
-rw-r--r-- | net/ipv6/netfilter/ip6_tables.c | 35 |
1 files changed, 13 insertions, 22 deletions
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index f06e25065a34..af4c917e0836 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -282,12 +282,7 @@ ip6t_do_table(struct sk_buff *skb, local_bh_disable(); addend = xt_write_recseq_begin(); - private = table->private; - /* - * Ensure we load private-> members after we've fetched the base - * pointer. - */ - smp_read_barrier_depends(); + private = READ_ONCE(table->private); /* Address dependency. */ cpu = smp_processor_id(); table_base = private->entries; jumpstack = (struct ip6t_entry **)private->jumpstack[cpu]; @@ -458,7 +453,6 @@ mark_source_chains(const struct xt_table_info *newinfo, if (!xt_find_jump_offset(offsets, newpos, newinfo->number)) return 0; - e = entry0 + newpos; } else { /* ... this is a fallthru */ newpos = pos + e->next_offset; @@ -992,9 +986,8 @@ static int get_info(struct net *net, void __user *user, if (compat) xt_compat_lock(AF_INET6); #endif - t = try_then_request_module(xt_find_table_lock(net, AF_INET6, name), - "ip6table_%s", name); - if (t) { + t = xt_request_find_table_lock(net, AF_INET6, name); + if (!IS_ERR(t)) { struct ip6t_getinfo info; const struct xt_table_info *private = t->private; #ifdef CONFIG_COMPAT @@ -1024,7 +1017,7 @@ static int get_info(struct net *net, void __user *user, xt_table_unlock(t); module_put(t->me); } else - ret = -ENOENT; + ret = PTR_ERR(t); #ifdef CONFIG_COMPAT if (compat) xt_compat_unlock(AF_INET6); @@ -1050,7 +1043,7 @@ get_entries(struct net *net, struct ip6t_get_entries __user *uptr, get.name[sizeof(get.name) - 1] = '\0'; t = xt_find_table_lock(net, AF_INET6, get.name); - if (t) { + if (!IS_ERR(t)) { struct xt_table_info *private = t->private; if (get.size == private->size) ret = copy_entries_to_user(private->size, @@ -1061,7 +1054,7 @@ get_entries(struct net *net, struct ip6t_get_entries __user *uptr, module_put(t->me); xt_table_unlock(t); } else - ret = -ENOENT; + ret = PTR_ERR(t); return ret; } @@ -1084,10 +1077,9 @@ __do_replace(struct net *net, const char *name, unsigned int valid_hooks, goto out; } - t = try_then_request_module(xt_find_table_lock(net, AF_INET6, name), - "ip6table_%s", name); - if (!t) { - ret = -ENOENT; + t = xt_request_find_table_lock(net, AF_INET6, name); + if (IS_ERR(t)) { + ret = PTR_ERR(t); goto free_newinfo_counters_untrans; } @@ -1200,8 +1192,8 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len, if (IS_ERR(paddc)) return PTR_ERR(paddc); t = xt_find_table_lock(net, AF_INET6, tmp.name); - if (!t) { - ret = -ENOENT; + if (IS_ERR(t)) { + ret = PTR_ERR(t); goto free; } @@ -1637,7 +1629,7 @@ compat_get_entries(struct net *net, struct compat_ip6t_get_entries __user *uptr, xt_compat_lock(AF_INET6); t = xt_find_table_lock(net, AF_INET6, get.name); - if (t) { + if (!IS_ERR(t)) { const struct xt_table_info *private = t->private; struct xt_table_info info; ret = compat_table_info(private, &info); @@ -1651,7 +1643,7 @@ compat_get_entries(struct net *net, struct compat_ip6t_get_entries __user *uptr, module_put(t->me); xt_table_unlock(t); } else - ret = -ENOENT; + ret = PTR_ERR(t); xt_compat_unlock(AF_INET6); return ret; @@ -1955,7 +1947,6 @@ static int __init ip6_tables_init(void) if (ret < 0) goto err5; - pr_info("(C) 2000-2006 Netfilter Core Team\n"); return 0; err5: |