[PATCHv4 net-next 10/15] net: cls_bpf: allow offloaded filters to update stats

[Jakub Kicinski]

Call into offloaded filters to update stats.

Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
Acked-by: Daniel Borkmann <dan...@iogearbox.net>
---
 include/net/pkt_cls.h |  1 +
 net/sched/cls_bpf.c   | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 57af9f3032ff..5ccaa4be7d96 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -490,6 +490,7 @@ enum tc_clsbpf_command {
        TC_CLSBPF_ADD,
        TC_CLSBPF_REPLACE,
        TC_CLSBPF_DESTROY,
+       TC_CLSBPF_STATS,
 };
 
 struct tc_cls_bpf_offload {
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index 1aad314089e9..86ef331f78e8 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -223,6 +223,15 @@ static void cls_bpf_stop_offload(struct tcf_proto *tp,
        prog->offloaded = false;
 }
 
+static void cls_bpf_offload_update_stats(struct tcf_proto *tp,
+                                        struct cls_bpf_prog *prog)
+{
+       if (!prog->offloaded)
+               return;
+
+       cls_bpf_offload_cmd(tp, prog, TC_CLSBPF_STATS);
+}
+
 static int cls_bpf_init(struct tcf_proto *tp)
 {
        struct cls_bpf_head *head;
@@ -578,6 +587,8 @@ static int cls_bpf_dump(struct net *net, struct tcf_proto 
*tp, unsigned long fh,
 
        tm->tcm_handle = prog->handle;
 
+       cls_bpf_offload_update_stats(tp, prog);
+
        nest = nla_nest_start(skb, TCA_OPTIONS);
        if (nest == NULL)
                goto nla_put_failure;
-- 
1.9.1