net: sched: remove tcf_proto from ematch calls

This removes the tcf_proto argument from the ematch code paths that
only need it to reference the net namespace. This allows simplifying
qdisc code paths especially when we need to tear down the ematch
from an RCU callback. In this case we can not guarentee that the
tcf_proto structure is still valid.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/em_canid.c b/net/sched/em_canid.c
index 7c292d4..ddd883c 100644
--- a/net/sched/em_canid.c
+++ b/net/sched/em_canid.c
@@ -120,7 +120,7 @@
 	return match;
 }
 
-static int em_canid_change(struct tcf_proto *tp, void *data, int len,
+static int em_canid_change(struct net *net, void *data, int len,
 			  struct tcf_ematch *m)
 {
 	struct can_filter *conf = data; /* Array with rules */
@@ -183,7 +183,7 @@
 	return 0;
 }
 
-static void em_canid_destroy(struct tcf_proto *tp, struct tcf_ematch *m)
+static void em_canid_destroy(struct tcf_ematch *m)
 {
 	struct canid_match *cm = em_canid_priv(m);