net: sched: add termination action to allow goto chain
Introduce new type of termination action called "goto_chain". This allows
user to specify a chain to be processed. This action type is
then processed as a return value in tcf_classify loop in similar
way as "reclassify" is, only it does not reset to the first filter
in chain but rather reset to the first filter of the desired chain.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 9e0c4bb..4020b8d 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -307,8 +307,12 @@ int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
err = tp->classify(skb, tp, res);
#ifdef CONFIG_NET_CLS_ACT
- if (unlikely(err == TC_ACT_RECLASSIFY && !compat_mode))
+ if (unlikely(err == TC_ACT_RECLASSIFY && !compat_mode)) {
goto reset;
+ } else if (unlikely(TC_ACT_EXT_CMP(err, TC_ACT_GOTO_CHAIN))) {
+ old_tp = res->goto_tp;
+ goto reset;
+ }
#endif
if (err >= 0)
return err;