pkt_sched: sch_hfsc: sch_htb: Add non-work-conserving warning handler.

Patrick McHardy <kaber@trash.net> suggested:
> How about making this flag and the warning message (in a out-of-line
> function) globally available? Other qdiscs (f.i. HFSC) can't deal with
> inner non-work-conserving qdiscs as well.

This patch uses qdisc->flags field of "suspected" child qdisc.

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 5 insertions, 3 deletions

diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 4082f39f5079..e37fe3129c17 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -85,6 +85,7 @@ extern struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r,
                 struct nlattr *tab);
 extern void qdisc_put_rtab(struct qdisc_rate_table *tab);
 extern void qdisc_put_stab(struct qdisc_size_table *tab);
+extern void qdisc_warn_nonwc(char *txt, struct Qdisc *qdisc);
 
 extern void __qdisc_run(struct Qdisc *q);
 
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index f8c47429044a..3d78a4d22460 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -42,9 +42,10 @@ struct Qdisc
         int                     (*enqueue)(struct sk_buff *skb, struct Qdisc *dev);
         struct sk_buff *        (*dequeue)(struct Qdisc *dev);
         unsigned                flags;
-#define TCQ_F_BUILTIN   1
-#define TCQ_F_THROTTLED 2
-#define TCQ_F_INGRESS   4
+#define TCQ_F_BUILTIN           1
+#define TCQ_F_THROTTLED         2
+#define TCQ_F_INGRESS           4
+#define TCQ_F_WARN_NONWC        (1 << 16)
         int                     padded;
         struct Qdisc_ops        *ops;
         struct qdisc_size_table *stab;