From 27e2c26b85b6b234411d94127201436c1ec9c002 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Mon, 17 Dec 2007 21:56:48 -0800 Subject: [PATCH] [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 Signed-off-by: David S. Miller --- net/ipv4/netfilter/arp_tables.c | 29 +++++++++++++++++++++-------- 1 file 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) { -- 2.46.0