diff options
Diffstat (limited to 'net/ipv4/netfilter/arp_tables.c')
| -rw-r--r-- | net/ipv4/netfilter/arp_tables.c | 50 |
1 files changed, 15 insertions, 35 deletions
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index 0ada09ae6e81..d75c139393fc 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -275,7 +275,7 @@ unsigned int arpt_do_table(struct sk_buff *skb, * pointer. */ smp_read_barrier_depends(); - table_base = private->entries[smp_processor_id()]; + table_base = private->entries; e = get_entry(table_base, private->hook_entry[hook]); back = get_entry(table_base, private->underflow[hook]); @@ -711,12 +711,6 @@ static int translate_table(struct xt_table_info *newinfo, void *entry0, return ret; } - /* And one copy for every other CPU */ - for_each_possible_cpu(i) { - if (newinfo->entries[i] && newinfo->entries[i] != entry0) - memcpy(newinfo->entries[i], entry0, newinfo->size); - } - return ret; } @@ -731,7 +725,7 @@ static void get_counters(const struct xt_table_info *t, seqcount_t *s = &per_cpu(xt_recseq, cpu); i = 0; - xt_entry_foreach(iter, t->entries[cpu], t->size) { + xt_entry_foreach(iter, t->entries, t->size) { struct xt_counters *tmp; u64 bcnt, pcnt; unsigned int start; @@ -785,7 +779,7 @@ static int copy_entries_to_user(unsigned int total_size, if (IS_ERR(counters)) return PTR_ERR(counters); - loc_cpu_entry = private->entries[raw_smp_processor_id()]; + loc_cpu_entry = private->entries; /* ... then copy entire thing ... */ if (copy_to_user(userptr, loc_cpu_entry, total_size) != 0) { ret = -EFAULT; @@ -880,10 +874,10 @@ static int compat_table_info(const struct xt_table_info *info, if (!newinfo || !info) return -EINVAL; - /* we dont care about newinfo->entries[] */ + /* we dont care about newinfo->entries */ memcpy(newinfo, info, offsetof(struct xt_table_info, entries)); newinfo->initial_entries = 0; - loc_cpu_entry = info->entries[raw_smp_processor_id()]; + loc_cpu_entry = info->entries; xt_compat_init_offsets(NFPROTO_ARP, info->number); xt_entry_foreach(iter, loc_cpu_entry, info->size) { ret = compat_calc_entry(iter, info, loc_cpu_entry, newinfo); @@ -1048,7 +1042,7 @@ static int __do_replace(struct net *net, const char *name, get_counters(oldinfo, counters); /* Decrease module usage counts and free resource */ - loc_cpu_old_entry = oldinfo->entries[raw_smp_processor_id()]; + loc_cpu_old_entry = oldinfo->entries; xt_entry_foreach(iter, loc_cpu_old_entry, oldinfo->size) cleanup_entry(iter); @@ -1095,8 +1089,7 @@ static int do_replace(struct net *net, const void __user *user, if (!newinfo) return -ENOMEM; - /* choose the copy that is on our node/cpu */ - loc_cpu_entry = newinfo->entries[raw_smp_processor_id()]; + loc_cpu_entry = newinfo->entries; if (copy_from_user(loc_cpu_entry, user + sizeof(tmp), tmp.size) != 0) { ret = -EFAULT; @@ -1126,7 +1119,7 @@ static int do_replace(struct net *net, const void __user *user, static int do_add_counters(struct net *net, const void __user *user, unsigned int len, int compat) { - unsigned int i, curcpu; + unsigned int i; struct xt_counters_info tmp; struct xt_counters *paddc; unsigned int num_counters; @@ -1136,7 +1129,6 @@ static int do_add_counters(struct net *net, const void __user *user, struct xt_table *t; const struct xt_table_info *private; int ret = 0; - void *loc_cpu_entry; struct arpt_entry *iter; unsigned int addend; #ifdef CONFIG_COMPAT @@ -1192,11 +1184,9 @@ static int do_add_counters(struct net *net, const void __user *user, } i = 0; - /* Choose the copy that is on our node */ - curcpu = smp_processor_id(); - loc_cpu_entry = private->entries[curcpu]; + addend = xt_write_recseq_begin(); - xt_entry_foreach(iter, loc_cpu_entry, private->size) { + xt_entry_foreach(iter, private->entries, private->size) { struct xt_counters *tmp; tmp = xt_get_this_cpu_counter(&iter->counters); @@ -1410,7 +1400,7 @@ static int translate_compat_table(const char *name, newinfo->hook_entry[i] = info->hook_entry[i]; newinfo->underflow[i] = info->underflow[i]; } - entry1 = newinfo->entries[raw_smp_processor_id()]; + entry1 = newinfo->entries; pos = entry1; size = total_size; xt_entry_foreach(iter0, entry0, total_size) { @@ -1470,11 +1460,6 @@ static int translate_compat_table(const char *name, return ret; } - /* And one copy for every other CPU */ - for_each_possible_cpu(i) - if (newinfo->entries[i] && newinfo->entries[i] != entry1) - memcpy(newinfo->entries[i], entry1, newinfo->size); - *pinfo = newinfo; *pentry0 = entry1; xt_free_table_info(info); @@ -1533,8 +1518,7 @@ static int compat_do_replace(struct net *net, void __user *user, if (!newinfo) return -ENOMEM; - /* choose the copy that is on our node/cpu */ - loc_cpu_entry = newinfo->entries[raw_smp_processor_id()]; + loc_cpu_entry = newinfo->entries; if (copy_from_user(loc_cpu_entry, user + sizeof(tmp), tmp.size) != 0) { ret = -EFAULT; goto free_newinfo; @@ -1631,7 +1615,6 @@ static int compat_copy_entries_to_user(unsigned int total_size, void __user *pos; unsigned int size; int ret = 0; - void *loc_cpu_entry; unsigned int i = 0; struct arpt_entry *iter; @@ -1639,11 +1622,9 @@ static int compat_copy_entries_to_user(unsigned int total_size, if (IS_ERR(counters)) return PTR_ERR(counters); - /* choose the copy on our node/cpu */ - loc_cpu_entry = private->entries[raw_smp_processor_id()]; pos = userptr; size = total_size; - xt_entry_foreach(iter, loc_cpu_entry, total_size) { + xt_entry_foreach(iter, private->entries, total_size) { ret = compat_copy_entry_to_user(iter, &pos, &size, counters, i++); if (ret != 0) @@ -1812,8 +1793,7 @@ struct xt_table *arpt_register_table(struct net *net, goto out; } - /* choose the copy on our node/cpu */ - loc_cpu_entry = newinfo->entries[raw_smp_processor_id()]; + loc_cpu_entry = newinfo->entries; memcpy(loc_cpu_entry, repl->entries, repl->size); ret = translate_table(newinfo, loc_cpu_entry, repl); @@ -1844,7 +1824,7 @@ void arpt_unregister_table(struct xt_table *table) private = xt_unregister_table(table); /* Decrease module usage counts and free resources */ - loc_cpu_entry = private->entries[raw_smp_processor_id()]; + loc_cpu_entry = private->entries; xt_entry_foreach(iter, loc_cpu_entry, private->size) cleanup_entry(iter); if (private->number > private->initial_entries) |