net/sched: allow stats updates from offloaded police actions

Implement the stats_update callback for the police action that
will be used by drivers for hardware offload.

Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index e33bcab..6173194 100644 (file)
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -282,6 +282,20 @@ static void tcf_police_cleanup(struct tc_action *a)
                kfree_rcu(p, rcu);
 }
 
+static void tcf_police_stats_update(struct tc_action *a,
+                                   u64 bytes, u32 packets,
+                                   u64 lastuse, bool hw)
+{
+       struct tcf_police *police = to_police(a);
+       struct tcf_t *tm = &police->tcf_tm;
+
+       _bstats_cpu_update(this_cpu_ptr(a->cpu_bstats), bytes, packets);
+       if (hw)
+               _bstats_cpu_update(this_cpu_ptr(a->cpu_bstats_hw),
+                                  bytes, packets);
+       tm->lastuse = max_t(u64, tm->lastuse, lastuse);
+}
+
 static int tcf_police_dump(struct sk_buff *skb, struct tc_action *a,
                               int bind, int ref)
 {
@@ -345,6 +359,7 @@ static struct tc_action_ops act_police_ops = {
        .kind           =       "police",
        .id             =       TCA_ID_POLICE,
        .owner          =       THIS_MODULE,
+       .stats_update   =       tcf_police_stats_update,
        .act            =       tcf_police_act,
        .dump           =       tcf_police_dump,
        .init           =       tcf_police_init,