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authorEric Dumazet <edumazet@google.com>2021-12-04 20:22:03 -0800
committerJakub Kicinski <kuba@kernel.org>2021-12-06 16:05:10 -0800
commit9038c320001dd07f60736018edf608ac5baca0ab (patch)
treefea21a92f9a586370c4c85a5aab4adca4c160e7f /net/core/dst.c
parent4dbd24f65c60259ce5d1563433ecaf5fab693c83 (diff)
net: dst: add net device refcount tracking to dst_entry
We want to track all dev_hold()/dev_put() to ease leak hunting. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core/dst.c')
-rw-r--r--net/core/dst.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/net/core/dst.c b/net/core/dst.c
index 497ef9b3fc6a..d16c2c9bfebd 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -49,7 +49,7 @@ void dst_init(struct dst_entry *dst, struct dst_ops *ops,
unsigned short flags)
{
dst->dev = dev;
- dev_hold(dev);
+ dev_hold_track(dev, &dst->dev_tracker, GFP_ATOMIC);
dst->ops = ops;
dst_init_metrics(dst, dst_default_metrics.metrics, true);
dst->expires = 0UL;
@@ -117,7 +117,7 @@ struct dst_entry *dst_destroy(struct dst_entry * dst)
if (dst->ops->destroy)
dst->ops->destroy(dst);
- dev_put(dst->dev);
+ dev_put_track(dst->dev, &dst->dev_tracker);
lwtstate_put(dst->lwtstate);
@@ -159,8 +159,8 @@ void dst_dev_put(struct dst_entry *dst)
dst->input = dst_discard;
dst->output = dst_discard_out;
dst->dev = blackhole_netdev;
- dev_hold(dst->dev);
- dev_put(dev);
+ dev_replace_track(dev, blackhole_netdev, &dst->dev_tracker,
+ GFP_ATOMIC);
}
EXPORT_SYMBOL(dst_dev_put);