diff mbox series

[v2,net-next,21/23] net: failover: add net device refcount tracker

Message ID 20211203024640.1180745-22-eric.dumazet@gmail.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: add preliminary netdev refcount tracking | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count fail Series longer than 15 patches (and no cover letter)
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 1 maintainers not CCed: sridhar.samudrala@intel.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning WARNING: Missing commit description - Add an appropriate one
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Eric Dumazet Dec. 3, 2021, 2:46 a.m. UTC 
From: Eric Dumazet <edumazet@google.com>

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 include/net/failover.h | 1 +
 net/core/failover.c    | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

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);