diff options
| -rw-r--r-- | net/ipv4/netfilter/arp_tables.c | 10 | ||||
| -rw-r--r-- | net/ipv4/netfilter/ip_tables.c | 10 | ||||
| -rw-r--r-- | net/ipv6/netfilter/ip6_tables.c | 10 |
3 files changed, 18 insertions, 12 deletions
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index c868dd53e432..6bccba31d132 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -710,7 +710,7 @@ static void get_counters(const struct xt_table_info *t, struct arpt_entry *iter; unsigned int cpu; unsigned int i; - unsigned int curcpu; + unsigned int curcpu = get_cpu(); /* Instead of clearing (by a previous call to memset()) * the counters and using adds, we set the counters @@ -720,14 +720,16 @@ static void get_counters(const struct xt_table_info *t, * if new softirq were to run and call ipt_do_table */ local_bh_disable(); - curcpu = smp_processor_id(); - i = 0; xt_entry_foreach(iter, t->entries[curcpu], t->size) { SET_COUNTER(counters[i], iter->counters.bcnt, iter->counters.pcnt); ++i; } + local_bh_enable(); + /* Processing counters from other cpus, we can let bottom half enabled, + * (preemption is disabled) + */ for_each_possible_cpu(cpu) { if (cpu == curcpu) @@ -741,7 +743,7 @@ static void get_counters(const struct xt_table_info *t, } xt_info_wrunlock(cpu); } - local_bh_enable(); + put_cpu(); } static struct xt_counters *alloc_counters(const struct xt_table *table) diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index 3c584a6765b0..c439721b165a 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -884,7 +884,7 @@ get_counters(const struct xt_table_info *t, struct ipt_entry *iter; unsigned int cpu; unsigned int i; - unsigned int curcpu; + unsigned int curcpu = get_cpu(); /* Instead of clearing (by a previous call to memset()) * the counters and using adds, we set the counters @@ -894,14 +894,16 @@ get_counters(const struct xt_table_info *t, * if new softirq were to run and call ipt_do_table */ local_bh_disable(); - curcpu = smp_processor_id(); - i = 0; xt_entry_foreach(iter, t->entries[curcpu], t->size) { SET_COUNTER(counters[i], iter->counters.bcnt, iter->counters.pcnt); ++i; } + local_bh_enable(); + /* Processing counters from other cpus, we can let bottom half enabled, + * (preemption is disabled) + */ for_each_possible_cpu(cpu) { if (cpu == curcpu) @@ -915,7 +917,7 @@ get_counters(const struct xt_table_info *t, } xt_info_wrunlock(cpu); } - local_bh_enable(); + put_cpu(); } static struct xt_counters *alloc_counters(const struct xt_table *table) diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 33113c1ea02f..5359ef4daac5 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -897,7 +897,7 @@ get_counters(const struct xt_table_info *t, struct ip6t_entry *iter; unsigned int cpu; unsigned int i; - unsigned int curcpu; + unsigned int curcpu = get_cpu(); /* Instead of clearing (by a previous call to memset()) * the counters and using adds, we set the counters @@ -907,14 +907,16 @@ get_counters(const struct xt_table_info *t, * if new softirq were to run and call ipt_do_table */ local_bh_disable(); - curcpu = smp_processor_id(); - i = 0; xt_entry_foreach(iter, t->entries[curcpu], t->size) { SET_COUNTER(counters[i], iter->counters.bcnt, iter->counters.pcnt); ++i; } + local_bh_enable(); + /* Processing counters from other cpus, we can let bottom half enabled, + * (preemption is disabled) + */ for_each_possible_cpu(cpu) { if (cpu == curcpu) @@ -928,7 +930,7 @@ get_counters(const struct xt_table_info *t, } xt_info_wrunlock(cpu); } - local_bh_enable(); + put_cpu(); } static struct xt_counters *alloc_counters(const struct xt_table *table) |