[NET_SCHED]: Add hrtimer based qdisc watchdog

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 1c12afd113d6..b090d55d5eb8 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -64,6 +64,16 @@ typedef long	psched_tdiff_t;
 #define PSCHED_IS_PASTPERFECT(t)        ((t) == 0)
 #define PSCHED_AUDIT_TDIFF(t)
 
+struct qdisc_watchdog {
+        struct hrtimer  timer;
+        struct Qdisc    *qdisc;
+};
+
+extern void qdisc_watchdog_init(struct qdisc_watchdog *wd, struct Qdisc *qdisc);
+extern void qdisc_watchdog_schedule(struct qdisc_watchdog *wd,
+                                    psched_time_t expires);
+extern void qdisc_watchdog_cancel(struct qdisc_watchdog *wd);
+
 extern struct Qdisc_ops pfifo_qdisc_ops;
 extern struct Qdisc_ops bfifo_qdisc_ops;