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authorStephen Hemminger <shemminger@vyatta.com>2008-11-25 21:14:06 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-25 21:14:06 -0800
commitc1b56878fb68e9c14070939ea4537ad4db79ffae (patch)
tree589f890f81e075380493905509244a0970d942f8 /net/sched
parent71bcb09a57894fa35591ce93dd972065eeecb63a (diff)
downloadlinux-c1b56878fb68e9c14070939ea4537ad4db79ffae.tar.gz
tc: policing requires a rate estimator
Found that while trying average rate policing, it was possible to
request average rate policing without a rate estimator. This results
in no policing which is harmless but incorrect.

Since policing could be setup in two steps, need to check
in the kernel.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/act_police.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index e19a0261144a..c39f60cea6ee 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -182,6 +182,12 @@ override:
 		R_tab = qdisc_get_rtab(&parm->rate, tb[TCA_POLICE_RATE]);
 		if (R_tab == NULL)
 			goto failure;
+
+		if (!est && !gen_estimator_active(&police->tcf_rate_est)) {
+			err = -EINVAL;
+			goto failure;
+		}
+
 		if (parm->peakrate.rate) {
 			P_tab = qdisc_get_rtab(&parm->peakrate,
 					       tb[TCA_POLICE_PEAKRATE]);