diff options
| author | Patrick McHardy <kaber@trash.net> | 2007-07-15 00:02:31 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-07-15 00:02:31 -0700 |
| commit | 73ca4918fbb98311421259d82ef4ab44feeace43 (patch) | |
| tree | a5ae62e5474b3d28d7205ab3170aa73ff6d5f8ac /include/net | |
| parent | f6853e2df3de82c1dac8f62ddcf3a8dfa302419e (diff) | |
| download | blackbird-op-linux-73ca4918fbb98311421259d82ef4ab44feeace43.tar.gz blackbird-op-linux-73ca4918fbb98311421259d82ef4ab44feeace43.zip | |
[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')
| -rw-r--r-- | include/net/pkt_sched.h | 4 | ||||
| -rw-r--r-- | include/net/sch_generic.h | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 5754d53d9efc..9e22526e80e7 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. diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 1b8e35197ebe..0153cd9d1b8d 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -290,7 +290,7 @@ static inline int qdisc_reshape_fail(struct sk_buff *skb, struct Qdisc *sch) { sch->qstats.drops++; -#ifdef CONFIG_NET_CLS_POLICE +#if defined(CONFIG_NET_CLS_ACT) || defined(CONFIG_NET_CLS_POLICE) if (sch->reshape_fail == NULL || sch->reshape_fail(skb, sch)) goto drop; |
