net: sched: consolidate tc_classify{,_compat}
For classifiers getting invoked via tc_classify(), we always need an
extra function call into tc_classify_compat(), as both are being
exported as symbols and tc_classify() itself doesn't do much except
handling of reclassifications when tp->classify() returned with
TC_ACT_RECLASSIFY.
CBQ and ATM are the only qdiscs that directly call into tc_classify_compat(),
all others use tc_classify(). When tc actions are being configured
out in the kernel, tc_classify() effectively does nothing besides
delegating.
We could spare this layer and consolidate both functions. pktgen on
single CPU constantly pushing skbs directly into the netif_receive_skb()
path with a dummy classifier on ingress qdisc attached, improves
slightly from 22.3Mpps to 23.1Mpps.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 2342bf1..401038d 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -110,10 +110,8 @@
__qdisc_run(q);
}
-int tc_classify_compat(struct sk_buff *skb, const struct tcf_proto *tp,
- struct tcf_result *res);
int tc_classify(struct sk_buff *skb, const struct tcf_proto *tp,
- struct tcf_result *res);
+ struct tcf_result *res, bool compat_mode);
static inline __be16 tc_skb_protocol(const struct sk_buff *skb)
{