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Message-Id: <20211205042217.982127-22-eric.dumazet@gmail.com>
Date: Sat, 4 Dec 2021 20:22:15 -0800
From: Eric Dumazet <eric.dumazet@...il.com>
To: "David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: netdev <netdev@...r.kernel.org>,
Eric Dumazet <edumazet@...gle.com>,
Eric Dumazet <eric.dumazet@...il.com>,
Dmitry Vyukov <dvyukov@...gle.com>
Subject: [PATCH v3 net-next 21/23] net: failover: add net device refcount tracker
From: Eric Dumazet <edumazet@...gle.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
include/net/failover.h | 1 +
net/core/failover.c | 4 ++--
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/net/failover.h b/include/net/failover.h
index bb15438f39c7d98fe7c5637f08c3cfb23e7e79d2..f2b42b4b9cd6c1fb6561e7deca3c549dcf04f20f 100644
--- a/include/net/failover.h
+++ b/include/net/failover.h
@@ -25,6 +25,7 @@ struct failover_ops {
struct failover {
struct list_head list;
struct net_device __rcu *failover_dev;
+ netdevice_tracker dev_tracker;
struct failover_ops __rcu *ops;
};
diff --git a/net/core/failover.c b/net/core/failover.c
index b5cd3c727285d7a1738118c246abce8d31dac08f..dcaa92a85ea23c54bc5ea68eb8a0f38fb31ff436 100644
--- a/net/core/failover.c
+++ b/net/core/failover.c
@@ -252,7 +252,7 @@ struct failover *failover_register(struct net_device *dev,
return ERR_PTR(-ENOMEM);
rcu_assign_pointer(failover->ops, ops);
- dev_hold(dev);
+ dev_hold_track(dev, &failover->dev_tracker, GFP_KERNEL);
dev->priv_flags |= IFF_FAILOVER;
rcu_assign_pointer(failover->failover_dev, dev);
@@ -285,7 +285,7 @@ void failover_unregister(struct failover *failover)
failover_dev->name);
failover_dev->priv_flags &= ~IFF_FAILOVER;
- dev_put(failover_dev);
+ dev_put_track(failover_dev, &failover->dev_tracker);
spin_lock(&failover_lock);
list_del(&failover->list);
--
2.34.1.400.ga245620fadb-goog
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