xfrm: use new function dev_fetch_sw_netstats

Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/a6b816f4-bbf2-9db0-d59a-7e4e9cc808fe@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index 5b12093..aa4cdcf 100644 (file)
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -541,27 +541,7 @@ static int xfrmi_update(struct xfrm_if *xi, struct xfrm_if_parms *p)
 static void xfrmi_get_stats64(struct net_device *dev,
                               struct rtnl_link_stats64 *s)
 {
-       int cpu;
-
-       for_each_possible_cpu(cpu) {
-               struct pcpu_sw_netstats *stats;
-               struct pcpu_sw_netstats tmp;
-               int start;
-
-               stats = per_cpu_ptr(dev->tstats, cpu);
-               do {
-                       start = u64_stats_fetch_begin_irq(&stats->syncp);
-                       tmp.rx_packets = stats->rx_packets;
-                       tmp.rx_bytes   = stats->rx_bytes;
-                       tmp.tx_packets = stats->tx_packets;
-                       tmp.tx_bytes   = stats->tx_bytes;
-               } while (u64_stats_fetch_retry_irq(&stats->syncp, start));
-
-               s->rx_packets += tmp.rx_packets;
-               s->rx_bytes   += tmp.rx_bytes;
-               s->tx_packets += tmp.tx_packets;
-               s->tx_bytes   += tmp.tx_bytes;
-       }
+       dev_fetch_sw_netstats(s, dev->tstats);
 
        s->rx_dropped = dev->stats.rx_dropped;
        s->tx_dropped = dev->stats.tx_dropped;