diff mbox series

[net-next,14/19] net: add net device refcount tracker to struct pneigh_entry

Message ID 20211202032139.3156411-15-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State Superseded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: 3103 this patch: 3103
netdev/cc_maintainers warning 2 maintainers not CCed: daniel@iogearbox.net dsahern@kernel.org
netdev/build_clang fail Errors and warnings before: 399 this patch: 387
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: 3223 this patch: 3223
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. 2, 2021, 3:21 a.m. UTC 
From: Eric Dumazet <edumazet@google.com>

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 include/net/neighbour.h | 1 +
 net/core/neighbour.c    | 8 ++++----
 2 files changed, 5 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 190b07fe089ef5c900a0d97df0bc4d667d8bdcd6..5fffb783670a6d2432896a06d3044f6ac83feaf4 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -174,6 +174,7 @@  struct pneigh_entry {
 	struct pneigh_entry	*next;
 	possible_net_t		net;
 	struct net_device	*dev;
+	netdevice_tracker	dev_tracker;
 	u32			flags;
 	u8			protocol;
 	u8			key[];
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index fb340347e4d88f0058383697071cfb5bfbd9f925..56de74f8d2b1c896c478ded2c659b0207d7b5c75 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -771,10 +771,10 @@  struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl,
 	write_pnet(&n->net, net);
 	memcpy(n->key, pkey, key_len);
 	n->dev = dev;
-	dev_hold(dev);
+	dev_hold_track(dev, &n->dev_tracker, GFP_KERNEL);
 
 	if (tbl->pconstructor && tbl->pconstructor(n)) {
-		dev_put(dev);
+		dev_put_track(dev, &n->dev_tracker);
 		kfree(n);
 		n = NULL;
 		goto out;
@@ -806,7 +806,7 @@  int pneigh_delete(struct neigh_table *tbl, struct net *net, const void *pkey,
 			write_unlock_bh(&tbl->lock);
 			if (tbl->pdestructor)
 				tbl->pdestructor(n);
-			dev_put(n->dev);
+			dev_put_track(n->dev, &n->dev_tracker);
 			kfree(n);
 			return 0;
 		}
@@ -839,7 +839,7 @@  static int pneigh_ifdown_and_unlock(struct neigh_table *tbl,
 		n->next = NULL;
 		if (tbl->pdestructor)
 			tbl->pdestructor(n);
-		dev_put(n->dev);
+		dev_put_track(n->dev, &n->dev_tracker);
 		kfree(n);
 	}
 	return -ENOENT;