[PATCH][net-next] net: drop_monitor: change the stats variable to u64 in net_dm_stats_put

[Li RongQing]

only the element drop of struct net_dm_stats is used, so simplify it to u64

Signed-off-by: Li RongQing <lirongq...@baidu.com>
---
 net/core/drop_monitor.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index bfc024024aa3..ed10a40cf629 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -1329,11 +1329,11 @@ static int net_dm_cmd_config_get(struct sk_buff *skb, 
struct genl_info *info)
        return rc;
 }
 
-static void net_dm_stats_read(struct net_dm_stats *stats)
+static void net_dm_stats_read(u64 *stats)
 {
        int cpu;
 
-       memset(stats, 0, sizeof(*stats));
+       *stats = 0;
        for_each_possible_cpu(cpu) {
                struct per_cpu_dm_data *data = &per_cpu(dm_cpu_data, cpu);
                struct net_dm_stats *cpu_stats = &data->stats;
@@ -1345,14 +1345,14 @@ static void net_dm_stats_read(struct net_dm_stats 
*stats)
                        dropped = cpu_stats->dropped;
                } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
 
-               stats->dropped += dropped;
+               *stats += dropped;
        }
 }
 
 static int net_dm_stats_put(struct sk_buff *msg)
 {
-       struct net_dm_stats stats;
        struct nlattr *attr;
+       u64 stats;
 
        net_dm_stats_read(&stats);
 
@@ -1361,7 +1361,7 @@ static int net_dm_stats_put(struct sk_buff *msg)
                return -EMSGSIZE;
 
        if (nla_put_u64_64bit(msg, NET_DM_ATTR_STATS_DROPPED,
-                             stats.dropped, NET_DM_ATTR_PAD))
+                             stats, NET_DM_ATTR_PAD))
                goto nla_put_failure;
 
        nla_nest_end(msg, attr);
-- 
2.16.2