net: make sch_handle_ingress() drop monitor ready

TC_ACT_STOLEN is used when ingress traffic is mirred/redirected
to say ifb.

Packet is not dropped, but consumed.

Only TC_ACT_SHOT is a clear indication something went wrong.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Acked-by: NJamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/dev.c

@@ -3956,9 +3956,11 @@ sch_handle_ingress(struct sk_buff *skb, struct packet_type **pt_prev, int *ret,
 		break;
 	case TC_ACT_SHOT:
 		qdisc_qstats_cpu_drop(cl->q);
+		kfree_skb(skb);
+		return NULL;
 	case TC_ACT_STOLEN:
 	case TC_ACT_QUEUED:
-		kfree_skb(skb);
+		consume_skb(skb);
 		return NULL;
 	case TC_ACT_REDIRECT:
 		/* skb_mac_header check was done by cls/act_bpf, so