net/sched: act_gact: Update statistics when offloaded to hardware

Implement the stats_update callback that will be called by NIC drivers
for hardware offloaded filters.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index 1a6e09fbb2a5..ec5cc8435238 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -148,6 +148,20 @@ static int tcf_gact(struct sk_buff *skb, const struct tc_action *a,
         return action;
 }
 
+static void tcf_gact_stats_update(struct tc_action *a, u64 bytes, u32 packets,
+                                  u64 lastuse)
+{
+        struct tcf_gact *gact = a->priv;
+        int action = READ_ONCE(gact->tcf_action);
+        struct tcf_t *tm = &gact->tcf_tm;
+
+        _bstats_cpu_update(this_cpu_ptr(gact->common.cpu_bstats), bytes, packets);
+        if (action == TC_ACT_SHOT)
+                this_cpu_ptr(gact->common.cpu_qstats)->drops += packets;
+
+        tm->lastuse = lastuse;
+}
+
 static int tcf_gact_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
 {
         unsigned char *b = skb_tail_pointer(skb);
@@ -207,6 +221,7 @@ static struct tc_action_ops act_gact_ops = {
         .type           =       TCA_ACT_GACT,
         .owner          =       THIS_MODULE,
         .act            =       tcf_gact,
+        .stats_update   =       tcf_gact_stats_update,
         .dump           =       tcf_gact_dump,
         .init           =       tcf_gact_init,
         .walk           =       tcf_gact_walker,