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authorPatrick McHardy <kaber@trash.net>2007-12-17 21:56:48 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:58:47 -0800
commit27e2c26b85b6b234411d94127201436c1ec9c002 (patch)
tree61daa442ef241b7b0e21c4b26efad2efaf5fed2f /net
parentfb5b6095f320bd5a615049aa5fe8827ae9d1bf80 (diff)
[NETFILTER]: arp_tables: move counter allocation to seperate function
More resyncing with ip_tables.c as preparation for compat support. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/netfilter/arp_tables.c29
1 files changed, 21 insertions, 8 deletions
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index b0f43315842..eaca06eace0 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -706,16 +706,11 @@ static void get_counters(const struct xt_table_info *t,
}
}
-static int copy_entries_to_user(unsigned int total_size,
- struct arpt_table *table,
- void __user *userptr)
+static inline struct xt_counters *alloc_counters(struct arpt_table *table)
{
- unsigned int off, num, countersize;
- struct arpt_entry *e;
+ unsigned int countersize;
struct xt_counters *counters;
struct xt_table_info *private = table->private;
- int ret = 0;
- void *loc_cpu_entry;
/* We need atomic snapshot of counters: rest doesn't change
* (other than comefrom, which userspace doesn't care
@@ -725,13 +720,31 @@ static int copy_entries_to_user(unsigned int total_size,
counters = vmalloc_node(countersize, numa_node_id());
if (counters == NULL)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
/* First, sum counters... */
write_lock_bh(&table->lock);
get_counters(private, counters);
write_unlock_bh(&table->lock);
+ return counters;
+}
+
+static int copy_entries_to_user(unsigned int total_size,
+ struct arpt_table *table,
+ void __user *userptr)
+{
+ unsigned int off, num;
+ struct arpt_entry *e;
+ struct xt_counters *counters;
+ struct xt_table_info *private = table->private;
+ int ret = 0;
+ void *loc_cpu_entry;
+
+ counters = alloc_counters(table);
+ if (IS_ERR(counters))
+ return PTR_ERR(counters);
+
loc_cpu_entry = private->entries[raw_smp_processor_id()];
/* ... then copy entire thing ... */
if (copy_to_user(userptr, loc_cpu_entry, total_size) != 0) {