[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@xxxxxxxxx>
---
commit f858d36b5f774655b3dd9a08a6502a8e2df1bb63
tree 0cc2b6613b2c3aeff5c1881f2a7729781ba69fd6
parent d0ccbefbca69eff49883e5ad964a5f13172aef0d
author Patrick McHardy <kaber@xxxxxxxxx> Mon, 17 Dec 2007 14:58:12 +0100
committer Patrick McHardy <kaber@xxxxxxxxx> Tue, 18 Dec 2007 00:24:55 +0100
net/ipv4/netfilter/arp_tables.c | 29 +++++++++++++++++++++--------
1 files changed, 21 insertions(+), 8 deletions(-)
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index b0f4331..eaca06e 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) {
-
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