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authorPatrick McHardy <kaber@trash.net>2007-07-31 04:07:14 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-31 13:28:18 +0400
commitbdba91ec70fb5ccbdeb1c7068319adc6ea9e1a7d (patch)
treea5897654a7a6ef6338ea15bab7d11b2315b4f19e /net/sched/sch_prio.c
parent20283d84c7d922ca225b20db651d9a062716e8e3 (diff)
downloadlinux-bdba91ec70fb5ccbdeb1c7068319adc6ea9e1a7d.tar.xz
[NET_SCHED]: Fix prio/ingress classification logic error
Fix handling of empty or completely non-matching filter chains. In that case -1 is returned and tcf_result is uninitialized, the qdisc should fall back to default classification in that case. Noticed by PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com>. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_prio.c')
-rw-r--r--net/sched/sch_prio.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index 2d8c08493d6e..71bafde353a6 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -38,9 +38,11 @@ prio_classify(struct sk_buff *skb, struct Qdisc *sch, int *qerr)
struct prio_sched_data *q = qdisc_priv(sch);
u32 band = skb->priority;
struct tcf_result res;
+ int err;
*qerr = NET_XMIT_BYPASS;
if (TC_H_MAJ(skb->priority) != sch->handle) {
+ err = tc_classify(skb, q->filter_list, &res);
#ifdef CONFIG_NET_CLS_ACT
switch (tc_classify(skb, q->filter_list, &res)) {
case TC_ACT_STOLEN:
@@ -49,11 +51,8 @@ prio_classify(struct sk_buff *skb, struct Qdisc *sch, int *qerr)
case TC_ACT_SHOT:
return NULL;
}
-
- if (!q->filter_list ) {
-#else
- if (!q->filter_list || tc_classify(skb, q->filter_list, &res)) {
#endif
+ if (!q->filter_list || err < 0) {
if (TC_H_MAJ(band))
band = 0;
band = q->prio2band[band&TC_PRIO_MAX];