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authorPatrick McHardy <kaber@trash.net>2007-07-15 00:02:31 -0700
committerDavid S. Miller <davem@davemloft.net>2007-07-15 00:02:31 -0700
commit73ca4918fbb98311421259d82ef4ab44feeace43 (patch)
treea5ae62e5474b3d28d7205ab3170aa73ff6d5f8ac /include/net/pkt_sched.h
parentf6853e2df3de82c1dac8f62ddcf3a8dfa302419e (diff)
[NET_SCHED]: act_api: qdisc internal reclassify support
The behaviour of NET_CLS_POLICE for TC_POLICE_RECLASSIFY was to return it to the qdisc, which could handle it internally or ignore it. With NET_CLS_ACT however, tc_classify starts over at the first classifier and never returns it to the qdisc. This makes it impossible to support qdisc-internal reclassification, which in turn makes it impossible to remove the old NET_CLS_POLICE code without breaking compatibility since we have two qdiscs (CBQ and ATM) that support this. This patch adds a tc_classify_compat function that handles reclassification the old way and changes CBQ and ATM to use it. This again is of course not fully backwards compatible with the previous NET_CLS_ACT behaviour. Unfortunately there is no way to fully maintain compatibility *and* support qdisc internal reclassification with NET_CLS_ACT, but this seems like the better choice over keeping the two incompatible options around forever. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/pkt_sched.h')
-rw-r--r--include/net/pkt_sched.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 5754d53d9ef..9e22526e80e 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -89,8 +89,10 @@ static inline void qdisc_run(struct net_device *dev)
__qdisc_run(dev);
}
+extern int tc_classify_compat(struct sk_buff *skb, struct tcf_proto *tp,
+ struct tcf_result *res);
extern int tc_classify(struct sk_buff *skb, struct tcf_proto *tp,
- struct tcf_result *res);
+ struct tcf_result *res);
/* Calculate maximal size of packet seen by hard_start_xmit
routine of this device.