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| author | Patrick McHardy <kaber@trash.net> | 2007-07-15 09:02:31 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-07-15 09:02:31 +0200 |
| commit | 73ca4918fbb98311421259d82ef4ab44feeace43 (patch) | |
| tree | a5ae62e5474b3d28d7205ab3170aa73ff6d5f8ac /net/sched/act_police.c | |
| parent | [NET_SCHED]: sch_dsmark: act_api support (diff) | |
| download | linux-73ca4918fbb98311421259d82ef4ab44feeace43.tar.xz 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 'net/sched/act_police.c')
0 files changed, 0 insertions, 0 deletions