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authorToke Høiland-Jørgensen <toke@redhat.com>2019-01-09 17:10:57 +0100
committerDavid S. Miller <davem@davemloft.net>2019-01-19 09:53:18 -0800
commit5f2939d933e9616b8b779fa46963689000f1a8f4 (patch)
treeb05a4b633a3ca42aeb5dfce073d5ec8e42a9e515
parentf04d402f2f00a0f0470b7e636b50170608b425c7 (diff)
sch_api: Change signature of qdisc_tree_reduce_backlog() to use ints
There are now several places where qdisc_tree_reduce_backlog() is called with a negative number of packets (to signal an increase in number of packets in the queue). Rather than rely on overflow behaviour, change the function signature to use signed integers to communicate this usage to people reading the code. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/sch_generic.h3
-rw-r--r--net/sched/sch_api.c3
2 files changed, 2 insertions, 4 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 9481f2c142e2..7a4957599874 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -580,8 +580,7 @@ struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
void qdisc_reset(struct Qdisc *qdisc);
void qdisc_put(struct Qdisc *qdisc);
void qdisc_put_unlocked(struct Qdisc *qdisc);
-void qdisc_tree_reduce_backlog(struct Qdisc *qdisc, unsigned int n,
- unsigned int len);
+void qdisc_tree_reduce_backlog(struct Qdisc *qdisc, int n, int len);
#ifdef CONFIG_NET_SCHED
int qdisc_offload_dump_helper(struct Qdisc *q, enum tc_setup_type type,
void *type_data);
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 7e4d1ccf4c87..03e26e8d0ec9 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -758,8 +758,7 @@ static u32 qdisc_alloc_handle(struct net_device *dev)
return 0;
}
-void qdisc_tree_reduce_backlog(struct Qdisc *sch, unsigned int n,
- unsigned int len)
+void qdisc_tree_reduce_backlog(struct Qdisc *sch, int n, int len)
{
bool qdisc_is_offloaded = sch->flags & TCQ_F_OFFLOADED;
const struct Qdisc_class_ops *cops;